U.S. patent application number 10/126956 was filed with the patent office on 2002-12-19 for method for face-to-face weaving of shadow velours.
Invention is credited to Moulin, Gilbert, Smissaert, Ludo.
Application Number | 20020189702 10/126956 |
Document ID | / |
Family ID | 3896946 |
Filed Date | 2002-12-19 |
United States Patent
Application |
20020189702 |
Kind Code |
A1 |
Smissaert, Ludo ; et
al. |
December 19, 2002 |
Method for face-to-face weaving of shadow velours
Abstract
A method for face-to-face weaving of shadow velours fabrics in
which two velours fabrics are woven with pile forming pile yarn
tufts having a pre-determined orientation, each velours fabric
having pile zones with a different aspect, because their pile yarn
tufts have a different orientation, in order to form a
pre-determined figure on each velours fabric and in which
overlapping pile zones, having differently oriented pile yarn tufts
are formed on the pile faces, facing one another, in parts (31),
(32), (33), (34), (35), (36) of the face-to-face fabric, so that
the projection of each figure produces a figure on the opposite
pile face, which is different from the figure formed on the other
pile face. This method makes it possible to determine the figures
of the two velours fabrics independently of one another. If on the
pile faces, facing each other, figures are formed, which when
projected on the opposite pile face, are the mirror images of the
figures formed on the other pile face, it is possible to obtain
identical asymmetrical figures on both fabrics.
Inventors: |
Smissaert, Ludo; (Assebroek,
BE) ; Moulin, Gilbert; (Rekkem, BE) |
Correspondence
Address: |
James C. Wray
Suite 300
1493 Chain Bridge Road
McLean
VA
22101
US
|
Family ID: |
3896946 |
Appl. No.: |
10/126956 |
Filed: |
April 22, 2002 |
Current U.S.
Class: |
139/418 |
Current CPC
Class: |
D03D 27/10 20130101 |
Class at
Publication: |
139/418 |
International
Class: |
D03D 023/00; D03D
025/00 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 20, 2001 |
BE |
2001/0268 |
Claims
1. Method for face-to-face weaving of shadow velours fabrics where
two backing fabrics (19), (20) are woven above one another, when
the pile yarns (1), (6) are interlaced alternately in the one and
in the other backing fabric and then cut through between the
backing fabrics (19), (20), so that two velours fabrics are woven
with pile forming pile yarn tufts having a pre-determined
orientation on the pile faces, facing each other, and so that each
velours fabric has at least one first pile zone and at least one
second pile zone, the pile yarn tufts of which have a first and a
second orientation respectively, which is different, in order to
form a pre-determined figure on each velours fabric, characterized
in that the orientation of the pile yarn tufts is determined in
such a manner that on the faces of the velours fabrics facing each
other, at least one pile zone of the one velours fabric and a least
a second pile zone of the other velours fabric are overlapping, so
that the projection of each figure on the opposite pile face
produces a figure, which is different from the figure formed on the
other pile face;
2. Method for face-to-face weaving of shadow velours fabrics
according to claim 2 characterized in that the orientation of the
pile yarn tufts is determined in such a manner that the projection
of each figure on the opposite pile face produces a figure that is
the mirror image of the figure formed on that other pile face, with
respect to the axis, which is parallel with the fell of the
fabric.
3. Method for face-to-face weaving of shadow velours fabrics
according to claim 1 or 2, characterized in that each shadow
velours fabric moreover has at least also one third pile zone, the
pile yarn tufts of which have a third orientation that is different
from the first and second orientations in order to form, together
with each first and second pile zone, a pre-determined figure on
each velours fabric, and in that the orientation of the pile yarn
tufts is determined in such a manner that at least one first pile
zone and at least one third pile zone overlap and/or at least one
second pile zone and at least one third pile zone are overlapping
on the velours fabrics facing each other.
4. Method for face-to-face weaving of shadow velours fabrics
according to anyone of the preceding claims, characterized in that
beforehand a representation (42) is made of the pile faces of the
velours fabrics situated above one another, in which in different
places of that representation it is symbolically indicated which
orientation the pile yarn tufts should have in the corresponding
places of the upper and lower velours fabrics, situated above one
another, in order to form the pre-determined figures.
5. Method for face-to-face weaving of shadow velours fabrics
according to claim 4, characterized in that the said schematic
representation is a card design (42) with symbolic indications (A
to D) by means of a colour code.
6. Method for face-to-face weaving of shadow velours fabrics
according to claim 4 or 5, characterized in that in the said
representation (42), four different symbolic indications
(A),(B),(C),(D) are used, in the following situations respectively:
a. If the pile yarn tufts in the upper and the lower fabric should
have a same first orientation, b. If the pile yarn tufts in the
upper velours fabric should have a first orientation and those in
the lower velours fabric should have a second orientation, c. If
the pile yarn tufts in the upper velours fabric should have a
second orientation and those in the lower velours fabric should
have a first orientation, d. If the pile yarn tufts in the upper
velours fabric and in the lower velours fabric should have a same
second orientation,
7. Method for face-to-face weaving of shadow velours fabrics
according to claim 4 or 5, characterized in that in the said
representation (42) nine different symbolic indications (A to D)
are used, in the following situations respectively: a. If the pile
yarn tufts in the upper and the lower fabric should have a same
first orientation, b. If the pile yarn tufts in the upper and the
lower fabric should have a same second orientation, c. If the pile
yarn tufts in the upper and the lower fabric should have a third
orientation, d. If the pile yarn tufts in the upper velours fabric
should have a first orientation and in the lower velours fabric a
second orientation, e. If the pile yarn tufts in the upper velours
fabric should have a first orientation and in the lower velours
fabric a third orientation, f. If the pile yarn tufts in the upper
velours fabric should have a second orientation and in the lower
velours fabric a first orientation. g. If the pile yarn tufts in
the upper velours fabric should have a second orientation and in
the lower velours fabric a third orientation. h. If the pile yarn
tufts in the upper velours fabric should have a third orientation
and in the lower velours fabric a first orientation. i. If the pile
yarn tufts in the upper velours fabric should have a third
orientation and in the lower velours fabric a second
orientation.
8. Method for face-to-face weaving of shadow velours fabrics
according to anyone of the preceding claims, characterized in that
the said different orientations are an orientation standing
upright, an orientation slanting to the left in the warp direction
or an orientation slanting to the right in the chain direction.
9. Method for face-to-face weaving of shadow velours fabrics
according to anyone of the claims 4 to 8, characterized in that a
weave is associated with each symbolic indication (A to D) in the
said representation (42), which determines the course of the warp
chains (1-5), (6-10) of at least one warp yarn system comprising a
pile yarn (1), (6), with respect to a number of successively
inserted weft yarns (11-14), (15-18), in order to weave two backing
fabrics (19), (20) from warp yarns (1-5), (6-10) and weft yarns
(11-14), (15-18) and giving the pile yarn tufts of the said pile
yarn (1), (6) in these backing fabrics (19), (20) the orientations
indicated by the symbolic indication (A to D) concerned.
10. Method for face-to-face weaving of shadow velours fabrics
according to anyone of the preceding claims, characterized in that
a number of warp yarn systems is provided comprising a pile yarn
(1), (6) and for each velours fabric a tension warp yarn (2), (4);
(7), (9) and a binding warp yarn (3), (5); (8), (10), in that weft
yarns (11-13), (15-17) are inserted between the yarns (1-5), (6-10)
of each warp yarn system, so that two backing fabrics (19), (20)
are woven with respective tension warp yarns (2), (7); (4), (9) and
weft yarns (11-13), (15-17) interlaced by binding warp yarns (3),
(5); (8), (10), whereas pile yarns (1), (6) are interlaced in the
upper backing fabric (19) alternately over a group of three
successive weft yarns (11-13) and over a group of three successive
weft yarns (14-17) in the lower backing fabric (20), using a
{fraction (3/6)}-W-weave, and are running to the other backing
fabric, from each backing fabric (19), (20) between the third weft
yarn (13), (17) of a group and the first weft yarn (11), (15) of
the next group, and in that for each warp yarn system the
respective positions of the weft yarns (11-13), (15-17) of each
group with respect to the tension warp yarns (2), (7); (4), (9),
for each velours fabric are chosen from the following possibilities
in function of the orientations desired for the pile yarn tufts: a.
in order to obtain pile yarn tufts standing upright in the upper
and the lower velours fabric: positions over, under and over in the
upper velours fabric, and positions under, over and under in the
lower velours fabric; b. in order to obtain an orientation of the
pile yarn tufts directed slantwise to the left in the upper and the
lower velours fabric: positions under, under and over in the upper
velours fabric, and positions over, over and under in the lower
velours fabric; c. in order to obtain an orientation of the pile
yarn tufts directed slantwise to the right in the upper and the
lower velours fabric: positions over, under and under in the upper
velours fabric, and positions under, over and over in the lower
velours fabric; d. in order to obtain an orientation of the pile
yarn tufts directed slantwise to the left and slantwise to the
right respectively in the upper and the lower velours fabric:
positions under, under and over in the upper velours fabric, and
positions under, over and over in the lower velours fabric; e. in
order to obtain an orientation of the pile yarn tufts directed
slantwise to the left and slantwise to the right respectively in
the upper and the lower velours fabric: positions over, under and
over in the upper velours fabric, and positions over, over and
under in the lower velours fabric; f. in order to obtain an
orientation of the pile yarn tufts directed slantwise to the left
and standing upright respectively in the upper and the lower
velours fabric: the positions under, under and over in the upper
velours fabric, and the positions under, over and under in the
lower velours fabric respectively; g. in order to obtain an
orientation of the pile yarn tufts directed slantwise to the right
and standing upright respectively in the upper and the lower
velours fabric: the positions over, under and under in the upper
velours fabric, and the positions under, over and under in the
lower velours fabric respectively; h. in order to obtain pile yarn
tufts standing upright and an orientation directed slantwise to the
left of the pile yarn tufts respectively in the upper and the lower
velours fabric: the positions over, under and over in the upper
velours fabric, and the positions over, over and under in the lower
velours fabric respectively; i. in order to obtain pile yarn tufts
standing upright and an orientation directed slantwise to the right
respectively of the pile yarn tufts respectively in the upper and
the lower velours fabric: the positions over, under and over in the
upper velours fabric, and the positions under, over and over in the
lower velours fabric respectively;
11. Method for face-to-face weaving of shadow velours fabrics
according to anyone of the preceding claims, characterized in that
a number of warp yarn systems is provided comprising a pile yarn
(1), (6) and for each velours fabric a tension warp yarn (2), (4);
(7), (9) and a binding warp yarn (3), (5); (8), (10), in that weft
yarns are inserted between the yarns (1-5), (6-10) of each warp
yarn system, so that two backing fabrics (19), (20) are woven with
tension warp yarns (2), (7); (4), (9) and weft yarns (11-14),
(15-18) interlaced by binding warp yarns (3), (8); (5), (10), while
pile yarns (1), (6) are interlaced in the upper backing fabric (19)
alternately over a group of four successive weft yarns (11-14) in
the upper backing fabric (19) and over a group of four successive
weft yarns (15-18) in the lower backing fabric (20), using a
{fraction (4/8)}-W-weave and from each backing fabric (19), (20)
between the fourth weft yarn (14), (18) of a group and the first
weft yarn (11), (15) of the next group are running to the other
backing fabric, and in that for each warp yarn system the
respective positions of the four successive weft yarns (11-14),
(15-18) of each group with respect to the tension warp yarns (2),
(7); (4), (9), for each velours fabric are chosen from the
following possibilities in function of the orientations desired for
the pile yarn tufts: a. in order to obtain pile yarn tufts standing
upright in the upper and the lower velours fabrics: positions over,
under, under and over in the upper velours fabric, and positions
under, over, over and under in the lower velours fabric; b. in
order to obtain an orientation of the pile yarn tufts directed
slantwise to the left in the upper and the lower velours fabric:
positions under, under, over and over in the upper velours fabric,
and positions over, over, under and under in the lower velours
fabric; c. in order to obtain an orientation of the pile yarn tufts
directed slantwise to the right in the upper and the lower velours
fabric: positions over, over, under and under in the upper velours
fabric, and positions under, under, over and over in the lower
velours fabric; d. in order to obtain an orientation of the pile
yarn tufts directed slantwise to the left and slantwise to the
right respectively in the upper and the lower velours fabric:
positions under, under, over and over in the upper velours fabric,
and positions under, under, over and over in the lower velours
fabric; e. in order to obtain an orientation of the pile yarn tufts
directed slantwise to the right and slantwise to the left
respectively in the upper and the lower velours fabric: positions
over, over, under and under in the upper velours fabric, and
positions over, over, under and under in the lower velours fabric;
f. in order to obtain an orientation of the pile yarn tufts
directed slantwise to the left and standing upright respectively in
the upper and the lower velours fabric: the positions under, under,
over and over in the upper velours fabric, and the positions under,
over, over and under in the lower velours fabric respectively; g.
in order to obtain an orientation of the pile yarn tufts directed
slantwise to the right and standing upright respectively in the
upper and the lower velours fabric: the positions over, over, under
and under in the upper velours fabric, and the positions under,
over, over and under in the lower velours fabric respectively; h.
in order to obtain pile yarn tufts standing upright and an
orientation of the pile yarn tufts directed slantwise to the left
respectively in the upper and the lower velours fabric: the
positions over, under, under and over in the upper velours fabric,
and the positions over, over, under and under in the lower velours
fabric respectively; i. in order to obtain pile yarn tufts standing
upright and an orientation of the pile yarn tufts directed
slantwise to the right respectively in the upper and the lower
velours fabric: the positions over, under, under and over in the
upper velours fabric, and the positions under, under, over and over
in the lower velours fabric respectively;
12. Method for face-to-face weaving of shadow velours fabrics
according to claim 9, characterized in that with each symbolic
indication (A to D) in the said representation (42) a weave is
associated, having one of the possibilities according to claim 13
or a weave having one of the possibilities of claim 14, in which
for these weaves that option is chosen, which provides the
orientations of the pile yarn tufts indicated by the symbolic
indication (A to D) concerned.
13. Method for face-to-face weaving of shadow velours fabrics
according to anyone of the claims 4 to 12, characterized in that
the said representation (42) is made up by: making a first
auxiliary representation (40) of the pile face of the one velours
fabric, in which in various places of that representation it is
symbolically indicated which orientation the pile yarn tufts in the
corresponding places of the pile face should have in order to form
the pre-determined figure on the one velours fabric; making a
second auxiliary representation (41) of a pile face, which is the
mirror image of the pile face of the one velours fabric, with
respect to an axis coinciding with a fell of the fabric, in which
in various places of that representation it is indicated
symbolically which orientation the pile yarn tufts should have in
the corresponding places of that pile face in order to form the
mirror image, placing above one another or representing the two
auxiliary representations (40), (41) on one another and on the
basis of this arrangement or representation to determine which
orientations the pile yarn tufts should have in the corresponding
places situated above one another of the upper and lower velours
fabrics, and applying a different symbolic indication to the said
representation (42) for each different combination of orientations
of the pile yarn tufts to be realized above one another.
14. Method for face-to-face weaving of shadow velours fabrics
according to anyone of the claims 2 to 13, characterized in that,
by means of a computer, on the basis of orientations of pile yarn
tufts on the one fabric, the orientations of the pile yarn tufts on
the other fabric can be determined automatically, which are needed
to obtain on the fabrics the respective figures, which when
projected on the opposite pile face will produce the mirror image
of the figure formed on the other pile face.
15. Method for face-to-face weaving of shadow velours fabrics
according to claims 4 and 14, characterized in that the said
representation (42) is made automatically by means of a computer on
the basis of an auxiliary representation (40), (41) of the pile
face of one of the two fabrics, in which in various places of this
auxiliary representation (40), (41) it is symbolically indicated
which orientation the pile yarn tufts in the corresponding places
of the pile face should have in order to form the pre-determined
figure on that velours fabric.
Description
[0001] The present invention relates to a method for face-to-face
weaving of shadow velours fabrics where two backing fabrics are
woven over one another, when the pile yarns are interlaced
alternately in the one and in the other backing fabric and then cut
through between the backing fabrics, so that two velours fabrics
are woven with pile forming pile yarn tufts having a pre-determined
orientation on the pile faces, facing each other, and so that each
velours fabric has at least one first pile zone and at least one
second pile zone, the pile yarn tufts of which have a first and a
second orientation respectively that is different, in order to form
a pre-determined figure on each velours fabric.
[0002] Weaving shadow velours fabrics according to such a method is
already known. On a so-called uni-velours weaving machine more warp
yarn systems are provided, comprising tension warp yarns and
binding warp yarns for an upper and a lower backing fabric. The
tension warp yarns and the binding warp yarns can be positioned
with respect to two weft insertion levels by means of a jacquard
device with harness and by means of weaving frames, so that the
weft yarns inserted on these levels during the successive insertion
cycles are interlaced and so that finally two backing fabrics with
respective tension warp yarns are obtained.
[0003] The warp yarn systems further comprise also pile yarns that
can be positioned during weaving by means of pile weaving frames in
order to be interlaced over a number of weft yarns in the upper and
lower backing fabrics alternately. The pile weaving frames are
controlled, for instance, by a shaft machine or a cam disc machine
with a three position device. Thereafter the pile yarns are cut
through between the two backing fabrics, so that two velours
fabrics can be obtained with pile yarn tufts that extend towards
the faces facing each other (the pile faces) of the fabrics. The
pile yarns are all of the same color, so that a unicolored pile
surface is obtained with these fabrics.
[0004] To bring yet some variety into these unicolored pile
surfaces and, for instance, to make a design, a pattern, a figure
or a certain sign (numeral, character, logo) visible, it is known
to make use of the possibility to influence the orientation of the
pile yarn tufts. By giving the pile yarn tufts of different zones
of the pile face (hereafter called "pile zones") a different
orientation, these pile zones indeed get a different aspect. In
this manner, any figure can be made visible in the pile
surface.
[0005] The orientation of a pile yarn tuft is determined by the
relative positions of the weft yarns with respect to the tension
warp yarn and therefore with respect to the weave of the tension
warp yarn in the backing fabric.
[0006] If in a {fraction (3/6)} W-pile weave the tension warp yarn
for the lower cloth is 2.times. under and IX over, and for the
upper cloth 2.times. over and 1.times. under, then the pile tufts
will incline to the left (forward in the warp direction). Is the
tension warp yarn interlaced in the order 1.times. over and
2.times. under for the lower cloth and 1.times. under and 2.times.
over for the upper cloth, then the pile tufts will incline to the
right (backwards in the warp direction).
[0007] Therefore, the desired orientation of the various pile yarn
tufts is obtained by controlling the tension warp yarns. The
jacquard device used to this effect should provide only two
different positions for these tension warp yarns, because the
tension warp yarns only take up the positions of the backing warp
shed.
[0008] Additionally a color effect in the fabrics can be obtained
by weft selection. It is also possible, as described in EP 0 380
808, to give, in successive groups of three weft yarns, the first,
the second and the third weft yarn respectively, each time a first,
a second and a third color, in order to make another color visible
at each orientation of the pile yarn tufts.
[0009] When applying the face-to-face weaving technique for making
pile fabrics with a figure, the figure, which is obtained on the
pile face of the one fabric, is always the mirror image of the
figure obtained on the pile face of the other pile fabric. Indeed,
these figures are formed above one another on the faces of the
fabric facing each other, so that the projection of each figure on
the other opposite pile face is identical with the figure formed on
the other pile face. When the pile face of the upper fabric is
turned upwards, the figure being the mirror image of the figure on
the lower fabric is seen. With figures, which are symmetrical with
respect to a central axis, this mirror image is identical with the
figure itself, so that two fabrics with identical figures are
obtained.
[0010] However, when the figures are asymmetrical, the figures on
the fabrics are not identical. When the fabrics are laid one beside
the other, the figures are seen as each other's mirror images with
respect to a central axis coinciding with a fell of the fabric.
[0011] Also, with the method mentioned above for face-to-face
weaving of shadow velours fabrics, it is only known to form equal
pile zones with the pile yarns in parts of the upper and lower pile
fabric situated above one another, so that the figure of the upper
velours fabric and the figure of the lower velours fabric are
either identical (with symmetrical figures) or each other's mirror
image (with asymmetrical figures).
[0012] In other words, the known methods for weaving face-to-face
shadow velours fabrics according to the face-to-face weaving
technique have the disadvantage that the choice of a figure for the
one velours fabric at the same time lays down the aspect of the
figure on the other velours fabric. Up to this moment, this was not
considered as being a disadvantage, but as an inevitable
consequence of applying the face-to-face weaving technique. Because
a pile yarn effect in the upper fabric is realized by the same yarn
as a pile yarn effect in the part of the lower fabric, lying
underneath, it is assumed that also the effect should be identical.
This, indeed, is certainly the matter if it is the color of the
pile yarn that causes the effect.
[0013] Consequently, the inventive part of the present invention is
partly in the phrasing of the problem and in predicting the purpose
to remedy this problem, and partly in the solution of this problem
proposed by the method described in the present invention.
[0014] The said purpose is realized according to the present
invention by providing a method for weaving shadow velours fabrics,
having the characteristics mentioned in the first paragraph of the
present description, in which the orientation of the pile yarn
tufts is determined in such a manner that the faces of the velours
fabrics, facing each other, overlap in at least one first pile zone
of the one velours fabric and in at least one second pile zone of
the other velours fabric, so that the projection of each figure on
the opposite pile face, gives a figure that is different from the
figure formed on the other pile face.
[0015] Because the point here is the effect as a result of the
orientation of the pile yarn tufts in the respective fabrics, and
not as a result of the characteristics of the pile yarn itself, the
effect realized by a same pile yarn may be different in the upper
and in the lower fabric. Because of this idea and by applying the
method laid down in the present invention a figure may be obtained
on the pile face of the one velours fabric, the projection of which
on the opposite pile face of the other fabric is different from the
figure on the other fabric.
[0016] Another problem of the known methods for producing shadow
velours fabrics lies in the fact that it is not possible to weave
two velours fabrics in which a same asymmetric figure is formed,
because the figure of the one fabric will always be the mirror
image of the figure of the other fabric.
[0017] By determining the orientation of the pile yarn tufts in
such a manner that he projection of each figure on the opposite
pile face produces a figure that is the mirror image of the figure
produced on the other pile face, with respect to an axis that is
parallel with a fell of the fabric, when applying the method
according to the invention, this problem is also solved.
[0018] If the pile face of the upper velours fabric is turned up,
the figure produces a mirror image with respect to an axis that is
parallel with a fell of the fabric. Because of this, the asymmetric
figure on the upper velours fabric becomes identical with the
figure on the lower velours fabric. If, moreover, said axis also
coincides with a fell of the fabric, the figure is produced also in
the same place on both fabrics.
[0019] Preferably, the method is applied in such a manner that each
velours fabric has also at least one third pile zone, the pile yarn
tufts of which have a third orientation that differs from the said
first and second orientations to form a pre-determined figure,
together with each first and second pile zone on each velours
fabric, whereas the orientation of the pile yarn tufts is
determined in such a manner that, on the velours fabrics facing
each other, at least one first pile zone and at least one third
pile zone overlap, and/or at least one second and at least one
third pile zone overlap.
[0020] By applying three different orientation effects, fabrics
with a greater figure forming variation in the pile zone are
obtained. Just like the first and the second pile zones, also the
first and the third pile zones and the second and the third pile
zones may overlap, so that the two figures may be determined
independently from one another and with a figure forming variety as
great as possible.
[0021] In a preferred method a representation of the pile faces
situated above one another is made beforehand, in which in
different places of that representation has been indicated
symbolically which orientation of the pile yarn tufts in the
corresponding places situated above one another of the upper and
lower velours fabrics should have to form the pre-determined
figures.
[0022] A similar representation then serves as an auxiliary for
realizing the control of the weaving machine and may be a so-called
card design or "mise en carte". Such a card design is carried out,
for example, as a grid, representing the weaving surface (the two
fabrics above one another); each box of which represents one or
more crossings of yarns of a warp yarn system and weft yarns. In
each box is indicated, by a symbol, a sign or a color, which
orientation effect is wanted in that place in the places situated
above one another on the velours fabrics to be woven. Preferably,
the symbolic indications are given by means of a color code.
[0023] In the said representation, four different symbolic
indications can be used for instance, in the situation in which the
pile yarn tufts in the upper and the lower velours fabric must have
a same first orientation, in the situation in which the pile yarn
tufts must have a first orientation in the upper velours fabric and
a second orientation in the lower velours fabric, in the situation
in which the pile yarn tufts must have a second orientation in the
upper velours fabric and a first orientation in the lower velours
fabric and in the situation in which the pile yarn tufts must have
a same second orientation in the upper and in the lower velours
fabric respectively. This will usually be the case if figures are
to be obtained on the velours fabrics with overlapping first and
second pile zones.
[0024] If figures will have to be obtained on the velours fabrics
with overlapping first, second and third pile zones, each pile zone
in a fabric can overlap three different pile zones in the other
fabric, so that for the three pile zones, there are nine
combinations in total. The nine different situations are indicated
in the attached claim 7.
[0025] Preferably, the said different orientations are an upright
orientation, an orientation slanting to the left in the warp
direction or an orientation slanting to the right in the warp
direction.
[0026] Preferably, with each symbolic indication in the said
representation or card design, a weave is associated, determining
the course of the warp yarns of at least one warp yarn system
comprising a pile yarn, with respect to a number of weft yarns
inserted successively, in order to weave two backing fabrics from
warp yarns and weft yarns and in doing so to give the pile yarn
tufts of the said pile yarn in these backing fabrics the
orientations, indicated by the symbolic indication concerned.
[0027] In the method according to the present invention, preferably
a W-weave is used for the pile yarns. Although a {fraction
(3/6)}-W-weave or a {fraction (4/8)}-W-weave is preferred any
m/n-W-weave may be used.
[0028] Preferably, face-to-face weaving according to the present
invention occurs when a number of warp yarn systems are provided
that comprise a pile yarn and for each velours fabric a tension
warp yarn and a binding warp yarn, if in addition thereto weft
yarns are inserted between the yarns of each warp yarn system, so
that two backing fabrics are woven with respective tension warp
yarns and weft yarns woven in by binding warp yarns, when in this
process pile yarns are woven in alternately over a group of three
successive weft yarns in the upper backing fabric and over a group
of three successive weft yarns in the lower backing fabric using a
{fraction (3/6)}-W weave, and from each backing fabric are running
to the other backing fabric between the third weft yarn of a group
and the first weft yarn of a next group and when, in doing so, per
warp yarn system the respective positions of the weft yarns of each
group with respect to the tension warp yarns for each velours
fabric are chosen from the possibilities given in claim 10 (a to i)
in function of the desired orientations of the pile yarn tufts.
[0029] Another preferred method for weaving shadow velours fabrics
according to the present invention is a method in which a number of
warp yarn systems are provided, which comprise a pile yarn and for
each velours fabric a tension warp yarn and a binding warp yarn,
the weft yarns being inserted between the yarns of each warp yarn
system, so that the two backing fabrics are woven with respective
tension warp yarns and by weft yarns woven in by binding warp
yarns, the pile yarns being woven in alternately over a group of
four successive weft yarns in the upper fabric and a group of four
successive weft yarns in the lower backing fabric using a {fraction
(4/8)}-W-weave and are running to the other backing fabric from
each backing fabric between the fourth weft yarn of a group and the
first weft yarn of the next group, and whereby per warp yarn
systems the respective positions of the four successive weft yarns
of each group with respect to the tension warp yarns for each
velours fabric being chosen per tension weft yarn, from the
possibilities (a to i) given in claim 11 in function of the desired
orientations of the pile yarn tufts.
[0030] A very preferred method is obtained when a weave with one of
the options (a to i) according to claim 10 or a weave with the
options (a to i) according to claim 11 is associated with each of
the symbolic indications (for instance, with each different color)
in the representation or card design mentioned, the option for
these weaves being taken, that produce the orientations indicated
by the symbolic indication concerned.
[0031] Preferably, the said representation or card design is laid
out as follows:
[0032] a first auxiliary representation is made of the pile face of
the one velours fabric, in which a symbolic indication is made in
various places of that representation, which orientation the pile
yarn tufts should have in the corresponding places of the pile
face, in order to form the pre-determined figure on that velours
fabric.
[0033] a second auxiliary representation is made of a pile face,
which is the mirror image of the pile face of the one velours
fabric with respect to an axis coinciding with a fell of the
fabric, in which in various places of that representation is
indicated symbolically which orientation the pile yarn tufts should
have in the corresponding places of that pile face, in order to
form the mirror image.
[0034] the two auxiliary representations are superposed or
represented and by means of this arrangement or representation is
determined, for each place of the card design, which orientations
the pile yarn tufts should have in the corresponding places
situated above one another of the upper and the lower velours
fabric, and
[0035] a different symbolic indication is applied to the surface of
the final representation, for each different combination of pile
yarn tufts to be realized above one another.
[0036] If required, the last step of this method may be split up
into a series of successive steps in which the corresponding
symbolic indications are applied to the representation or card
design for one specific combination of orientations.
[0037] Preferably, the first auxiliary representation represents
the pile face for the lower fabric, whereas the second auxiliary
representation then represents the mirror image to be formed on the
upper fabric. It is however, possible to work the other way round
and form the mirror image on the lower fabric. In this method, the
auxiliary representation for the upper fabric is preferably placed
on the auxiliary representation for the lower fabric. It may,
however, also be done the other way round.
[0038] The method for weaving shadow velours fabrics with figures
on the opposite pile faces producing the mirror image of the figure
formed on that other pile face on the opposite pile face when
projected, can also be automated by means of a computer, on the
basis of orientations of pile yarn tufts on the one fabric by
automatically determining the orientations of the pile yarn tufts
on the other fabric, that are necessary to obtain the figures
desired on the fabrics (figures, which produce the mirror image of
the figure formed on the opposite pile face when projected on the
opposite pile face).
[0039] In order to obtain the figures mentioned above by means of
mirror image projections, the representation mentioned above of the
pile faces situated above one another of the velours fabrics may be
laid out automatically, with the help of a computer. This may be
done on the basis of an auxiliary representation of the pile face
of one of the two fabrics, in which in various places of this
auxiliary representation it is symbolically indicated which
orientation the pile yarn tufts should have in the corresponding
places of the pile face in order to form the pre-determined figure
on that velours fabric.
[0040] The software and/or computer systems and/or actions or
instructions prescribed which have been developed to implement such
a method are means to implement the protected method (or to have it
implemented) and are therefore within the scope of the present
invention and within the scope of protection of the present patent
(application).
[0041] In the following description, a possible method according to
the present invention is described in a more detailed manner. The
only purpose of this description is to further clarify the
characteristics and advantages of the invention. Therefore, this
description can in no way be interpreted as a limitation of the
field of application of the invention, neither as the scope of this
patent protection, as determined in the attached claims.
[0042] In this description reference is made, by means of reference
numbers, to the attached figures, of which:
[0043] the FIGS. 1 to 18 each represent a different weave for
face-to-face weaving according to the present invention, each
figure representing two warp yarn systems provided next to one
another, in schematic cross-sections of the face-to-face fabrics
represented below one another respectively and indicating on them
which positions the yarns of these warp yarn systems take up with
respect to a number of warp yarns and where a {fraction
(3/6)}-W-weave is used in the weaves as shown in the FIGS. 1 to 9,
and a {fraction (4/8)}-W-weave is used in the weaves shown in the
FIGS. 10 to 18;
[0044] FIG. 19 shows in respective schematic cross-sections
(represented below one another) of two warp yarn systems provided
next to one another, during face-to-face weaving of shadow velours
fabrics with various combinations of orientations of the pile warp
tufts in overlapping parts of the fabrics.
[0045] FIGS. 20 to 22 show two intermediate steps and the final
result respectively of a method for making a card design for
face-to-face weaving of two identical velours fabrics in which a
"2" is formed by pile yarn tufts oriented in a different
manner.
[0046] In face-to-face weaving of shadow velours, a series of warp
yarn systems is provided next to one another. Each warp yarn system
comprises a pile yarn (1), (6), a tension warp yarn (2), (7) and a
binding warp yarn (3), (8) for the upper backing fabric (19) and a
tension warp yarn (4) (9) and a binding warp yarn (5), (10) for the
lower backing fabric (20).
[0047] In a successive weft insertion cycle each time a respective
weft yarn (11), (12), (13), (14); (15), (16), (17), (18) is
inserted into a shed between the yarns (1-10) of each warp yarn
system at an upper and a lower insertion level. In this shed these
yarns (1-10) are positioned in such a manner with respect to the
insertion levels that the binding warp yarns (3), (8), (5), (10),
the tension warp yarns (2), (7), (4), (9) and the weft yarns (11),
(12), (13), (14); (15), (16), (17), (18) form two backing fabrics
(19), (20) above one another, whereas the pile yarns (1), (6) are
interlaced over a group of weft yarns alternately in the upper (19)
and in the lower backing fabric (20).
[0048] The pile yarns (1), (6) of successive warp yarn systems
(combine the two cross-section of each of the FIGS. 1 to 18) are
each time interlaced opposite one another in a different backing
fabric and are crossing each other between the two fabrics. In each
fabric and in each warp yarn system the binding warp yarn (3), (8),
(5), (10) runs alternately over and under a weft yarn (11-14),
(15-18). The binding warp yarns (3), (8), (5), (10) of two warp
yarn systems provided next to one another, running over and under a
same weft yarn respectively and are crossing one another between
two successive weft yarns. Hence, the weft yarns are interlaced and
an upper (19) and a lower backing fabric (20) is constituted.
Thereafter, the pile yarns (1), (6) are cut through between the two
backing fabrics (19), (20), so that velours fabrics are obtained
having a series of upright and/or slanting pile yarn tufts on the
faces directed towards one another.
[0049] In the FIGS. 1 to 18 is shown, each time for two warp yarn
systems situated next to one another, which positions the binding
warp yarns (3), (8), (5), (10), the tension warp yarns (2), (7),
(4), (9) and the pile yarns (1), (6) take up with respect to the
successive weft yarns (11), (12), (13), (14); (15), (16), (17),
(18).
[0050] With the weaves as shown in the FIGS. 1 to 9 there are
successive series of three weft yarns (11), (12), (13); (15), (16),
(17) of a group in each backing fabric (19), (20). The pile yarns
(1), (6) are interlaced with a {fraction (3/6)}-W-weave,
alternately in the one and in the other backing fabric over the
three weft yarns (11), (12), (13); (15), (16), (17) of a group and
then run between the third weft yarn (13), (17) of a group and the
first weft yarn (11), (15) of the next group to the other backing
fabric.
[0051] With the weave as shown in FIG. 1 the three successive weft
yarns (11-13); (15-17) of each group are interlaced in the upper
backing fabric over, under and over the tension warp yarn (2), (7)
respectively, and in the lower backing fabric (20) under, over and
under the tension warp yarn (4), (9). Because of this the first
(11), (15) and third weft yarns (13), (17) of each group in the
upper (19) and in the lower backing fabric (20) are interlaced in
the fabric on the same level, so that the pile yarn tufts standing
off each time between a first (11), (15) and a third weft yarn
(13), (17) will stand upright in the upper and lower velours
fabric.
[0052] With the weave shown in FIG. 2 the three successive weft
yarns (11-13); (15-17) of each group in the upper backing fabric
(19) are interlaced under, under and over the tension warp yarn
(2), (7) respectively, and in the lower backing fabric (20) are
interlaced over, over and under the tension warp yarn (4), (9)
respectively. Because of this the third weft yarns (13), (17) of
each group in the upper (19) and the lower backing fabric (20) are
interlaced closer to the back of the fabric than the first weft
yarns (11), (15), so that the pile yarn tufts in the upper (19) and
the lower (20) velours fabric will be oriented in the direction of
the third weft yarn (13),(17)--in the figure this means to the
left.
[0053] With the weave shown in FIG. 3 the three weft yarns (11-13);
(15-17) of each group are interlaced in the upper backing fabric
(19) over, under and under the tension warp yarn (2), (7) and in
the lower backing fabric (20) under, over and over the tension warp
yarn (4), (9). Because of this the first weft yarns (11), (15) of
each group in both backing fabrics (19), (20) are interlaced closer
to the back of the fabric than the third weft yarns (13), (17), so
that the pile yarn tufts in both velours fabrics will be oriented
in the direction of the first weft yarn (11), (15)--to the right in
the figure.
[0054] With the weave shown in FIG. 4 the three successive weft
yarns (11-13); (15-17) of each group in the upper backing fabric
(19) are interlaced under, under and over the tension warp yarn
(2), (7) respectively, and in the lower backing fabric (20) under,
over and over the tension warp yarn (4), (9) respectively. Because
of this, the third weft yarns (13) in the upper backing fabric (19)
are interlaced closer to the back of the fabric than the first weft
yarns (11). In the lower backing fabric (20) it is just the other
way round, so that the pile yarn tufts in the upper (19) and in the
lower velours fabric (20) will be oriented in the direction of the
third weft yarns (13)--to the left--and in the direction of the
first weft yarns (15)--to the right.
[0055] With the weave shown in FIG. 5 the three successive weft
yarns (11-13); (15-17) of each group in the upper backing fabric
(19) are interlaced over, under and under the tension warp yarn
(2), (7) respectively, and in the lower backing fabric (20) over,
over and under the tension warp yarn (4), (9) respectively. Because
of this the pile yarn tufts (13) in the upper and the lower velours
fabric are oriented in the direction of the first weft yarns
(11)--to the right--and in the direction of the third weft yarns
(17)--to the left--respectively.
[0056] With the weave shown in FIG. 6 the three successive weft
yarns (11-13); (15-17) of each group in the upper backing fabric
(19) are interlaced under, under and over the tension warp yarn
(2), (7) respectively, and in the lower backing fabric (20) under,
over and under the tension warp yarn (4), (9) respectively. Because
of this the pile yarn tufts in the upper velours fabric will be
oriented in the direction of the third weft yarns (13)--to the
left--and in the lower velours fabric, pile yarn tufts standing
upright will be obtained.
[0057] With the weave shown in FIG. 7 the three successive weft
yarns (11-13); (15-17) of each group in the upper backing fabric
(19) are interlaced over, under and under the tension warp yarn
(2), (7) respectively, and in the lower backing fabric (20) under,
over and under the tension warp yarn (4), (9) respectively. Because
of this, the pile yarn tufts in the upper velours fabric will be
oriented in the direction of the first weft yarns (11)--to the
right--and in the lower velours fabric, pile yarn tufts standing
upright will be obtained.
[0058] With the weave shown in FIG. 8 the three successive weft
yarns (11-13); (15-17) of each group in the upper backing fabric
(19) are interlaced over, under and over the tension warp yarn (2),
(7) respectively, and in the lower backing fabric (20) over, over
and under the tension warp yarn (4), (9) respectively. Because of
this, pile yarn tufts standing upright will be obtained in the
upper velours fabric and in the lower velours fabric, the pile yarn
tufts will be oriented in the direction of the third weft yarns
(17)--to the left.
[0059] With the weave shown in FIG. 9 the three successive weft
yarns (11-13); (15-17) of each group in the upper backing fabric
(19) are interlaced over, under and over the tension warp yarn (2),
(7) respectively, and in the lower backing fabric (20) under, over
and over the tension warp yarn (4), (9) respectively. Because of
this, pile yarn tufts standing upright will be obtained in the
upper velours fabric and in the lower velours fabric, the pile yarn
tufts will be oriented in the direction of the first weft yarns
(15)--to the right.
[0060] With the weaves shown in the FIGS. 10 to 18 there are
successive groups of four weft yarns (11), (12), (13), (14); (15),
(16), (17), (18) in each backing fabric (19), (20). The pile yarns
(1), (6) are interlaced over the four weft yarns (11), (12), (13),
(14); (15), (16), (17), (18) of a group alternately in the one and
in the other backing fabric, using a {fraction (4/8)}-W-weave, and
then run between the fourth weft yarn (14), (18) of a group and the
first weft yarn (11), (15) of the next group to the other backing
fabric.
[0061] With the weave shown in FIG. 10 the four successive weft
yarns (11-14); (15-18) of each group in the upper backing fabric
(19) are interlaced over, under, under and over the tension warp
yarn (2), (7) respectively, and in the lower backing fabric (20)
under, over, over and under the tension warp yarn (4), (9)
respectively. Because of this, pile yarn tufts standing upright
will be obtained in both fabrics, because the first (11), (15) and
fourth weft yarns (14), (18) in each fabric are running on the back
of the tension warp yarns (2), (7), (4), (9).
[0062] With the weave shown in FIG. 11 the four successive weft
yarns (11-14); (15-18) of each group in the upper backing fabric
(19) are interlaced under, under, over and over the tension warp
yarn (2), (7) respectively, and in the lower backing fabric (20)
over, over, under and under the tension warp yarn (4), (9)
respectively. Because of this the fourth weft yarns (14), (18) of
each group in the upper backing fabric (19) and the lower backing
fabric (20) are interlaced closer to the back of the fabric than
the first weft yarns (11), (15), so that the pile yarn tufts in the
upper and in the lower velours fabric will be oriented in the
direction of the fourth weft yarn (14), (18)--to the left.
[0063] With the weave shown in FIG. 12 the four successive weft
yarns (11-14); (15-18) of each group in the upper backing fabric
(19) are interlaced over, over, under and under the tension warp
yarn (2), (7) respectively, and in the lower backing fabric (20)
under, under, over and over the tension warp yarn (4), (9)
respectively. Because of this the first weft yarns (11), (15) of
each group in the upper (19) and the lower backing fabric (20) are
interlaced closer to the back of the fabric than the fourth weft
yarns (14), (18), so that the pile yarn tufts in the upper and in
the lower velours fabric will be oriented in the direction of the
first weft yarn (11), (15)--to the right.
[0064] With the weave shown in FIG. 13 the four successive weft
yarns (11-14); (15-18) of each group in the upper (19) and lower
backing fabric (20) are interlaced under, under, over and over the
tension warp yarn (2), (7), (4), (9) respectively. Because of this,
the pile yarn tufts in the upper velours fabric will be oriented
slantwise to the left and in the lower velours fabric slantwise to
the right.
[0065] With the weave shown in FIG. 14 the four successive weft
yarns (11-14); (15-18) of each group in the upper and lower backing
fabric (20) are interlaced over, over, under and under the tension
warp yarn (2), (7), (4), (9) respectively. Because of this, the
pile yarn tufts in the upper velours fabric will be oriented
slantwise to the right and in the lower velours fabric slantwise to
the left.
[0066] With the weave shown in FIG. 15 the four successive weft
yarns (11-14); (15-18) of each group in the upper backing fabric
(19) are interlaced under, under, over and over the tension warp
yarn (2), (7) respectively, and in the lower backing fabric (20)
under, over, over and under the tension warp yarn (4), (9)
respectively. Because of this, pile yarn tufts in the upper velours
fabric, oriented slantwise to the left and in the lower velours
fabric, standing upright are obtained.
[0067] With the weave shown in FIG. 16 the four successive weft
yarns (11-14); (15-18) of each group in the upper backing fabric
(19) are interlaced over, over, under and under the tension warp
yarn (2), (7) respectively, and in the lower backing fabric (20)
under, over, over and under the tension warp yarn (4), (9)
respectively. Because of this, pile yarn tufts in the upper velours
fabric, oriented slantwise to the right and in the lower velours
fabric, standing upright are obtained.
[0068] With the weave shown in FIG. 17 the four successive weft
yarns (11-14); (15-18) of each group in the upper backing fabric
(19) are interlaced over, under, under and over the tension warp
yarn (2), (7) respectively, and in the lower backing fabric (20)
under, over, under and under the tension warp yarn (4), (9).
Because of this, pile yarn tufts in the upper velours fabric
standing upright will be obtained and in the lower velours fabric
pile yarn tufts will be oriented slantwise to the left.
[0069] With the weave shown in FIG. 18 the four successive weft
yarns (11-14); (15-18) of each group in the upper backing fabric
(19) are interlaced over, under, under and over the tension warp
yarn (2), (7) respectively, and in the lower backing fabric (20)
under, under, over and over the tension warp yarn (4), (9)
respectively. Because of this in the upper velours fabric, pile
yarn tufts standing upright will be obtained and in the lower
velours fabric the pile yarn tufts will be oriented slantwise to
the right.
[0070] In FIG. 19 two warp yarn systems provided next to one
another are shown in a respective schematic cross-section of a
face-to-face shadow velours fabric. In each cross-section an upper
(19) and a lower backing fabric (20), woven above one another by
using a method according to the present invention is shown. The
binding warp yarns have not been represented. For the pile yarns
(1), (6) a {fraction (3/6)}-W-weave is used. After cutting through
the pile yarns (1), (6) between these backing fabrics (19), (20),
on the faces of the backing fabrics facing each other differently
oriented pile yarn tufts will be obtained.
[0071] The weave levels of the first (11), (15) and third weft
yarns (13), (17) of each group of weft yarns (11-13), (15-17) with
respect to the tension warp yarns (2), (7), (4), (9) determine the
orientation of the pile yarn tufts standing out between these weft
yarns on the finished velours fabrics, on the basis of these weave
levels it can be deduced from FIG. 19 that the face-to-face
fabric
[0072] has a first part (31) where on overlapping parts of these
fabrics pile yarn tufts slantwise to the left will be obtained,
[0073] has a second part (32) where on overlapping parts of the
upper and lower fabrics pile yarn tufts oriented slantwise to the
left and slantwise to the right respectively will be obtained,
[0074] has a third part (33) where on overlapping parts of the
upper and the lower fabric pile yarn tufts standing upright will be
obtained,
[0075] has a fourth part (34) where on overlapping parts of the
upper and the lower fabric pile yarn tufts standing upright and
oriented slantwise to the left respectively will be obtained,
[0076] has a fifth part (35) where on overlapping parts of the
upper and the lower fabric pile yarn tufts oriented slantwise to
the right will be obtained,
[0077] and has a sixth part (36) where on overlapping parts of the
upper and the lower fabric pile yarn tufts oriented slantwise to
the right and slantwise to the left respectively will be
obtained,
[0078] Each of the shadow velours fabrics thus obtained has pile
yarn tufts standing upright, pile yarn tufts oriented slantwise to
the left and pile yarn tufts oriented slantwise to the right. With
this differently oriented pile yarn tufts, pole zones with a
different aspect may be formed. With these pole zones any design,
pattern or figure or form or sign may be made visible in the
fabric. Thus, it is possible to weave shadow fabrics with a pile
face in which pile zones form one or more numerals or characters or
a logo.
[0079] Because different pile zones may overlap, the figures in
both fabrics may be determined independently of one another. The
invention further also presents the particular advantage to enable
the weaving of two shadow velours fabrics at the same time, having
an identical figure, which is asymmetrical with respect to the
central axis of the fabric as is mostly the case for numerals or
characters or logos.
[0080] In order to form different figures on both fabrics, and more
particularly if two identical fabrics should be obtained for
asymmetrical figures, it is possible first to make a card design on
which it can be seen which orientation the pile yarn tufts should
have on the pile faces situated above one another, in order, in
doing so, to determine the weave to be used in a next step.
[0081] To illustrate such a method it will be explained hereafter,
with reference to the FIGS. 20, 21 and 22, how a card design is
made for weaving face-to-face two shadow velours fabrics having a
pile face in which the numeral "2" can be distinguished.
[0082] The card design is a grid, each box of which corresponds to
a crossing of two warp yarn systems situated next to one another
and a number of weft yarns. In the different boxes or grid points
of this grid is indicated by means of a color agreed upon, which
orientation is to be obtained in that particular place of the
fabric. In the example there are two different orientations in the
fabric: for instance pile yarn tufts directed slantwise to the left
and directed slantwise to the right.
[0083] The two possible orientations are each associated with a
different color, for instance color A for orientation to the left
and color B for orientation to the right. A dominant orientation is
chosen, for instance orientation to the left. Further a first
auxiliary card design (40) is made for the lower velours fabric, as
represented in FIG. 20. In this card design, the boxes with color B
(orientation to the right) form the numeral "2", whereas all other
boxes are of the color A (dominant orientation to the left).
[0084] Then a second auxiliary card design (41) is made for the
upper velours fabric, in which the numeral "2" is drawn as the
mirror image with respect to the fell of the fabric (see FIG. 21).
For the dominant orientation to the left the color A is used again.
The mirror image, which has to be formed by pile yarn tufts with an
orientation to the right, is indicated by a color C not yet
used.
[0085] Then the second auxiliary card design (41) is placed on the
first auxiliary card design (40).
[0086] Anywhere the dominant orientation to the left is found in
both fabrics, color A is maintained in the final card design (42).
The final card design is represented in FIG. 22. The color A is
associated with a weave causing an orientation to the left in both
fabrics. This may be the weave of FIG. 2 or of FIG. 11 for
instance.
[0087] Anywhere a box of color C (at the right in the upper fabric)
is overlapping a box of color B (at the right in the lower fabric),
color C is replaced by a color D not yet used in the final card
design (42). Color D in the card-design (42) is associated with a
weave that causes pile yarn tufts oriented to the right in both
upper and lower fabric. This is, for instance, the weave of FIG. 3
or the weave of FIG. 12.
[0088] Anywhere the boxes of color B were not covered by boxes of
color C, color B is maintained on the final card design (42). In
the upper fabric, the dominant orientation to the left may be
maintained, whereas the orientation to the right for the figure
should be obtained in the lower fabric. Therefore, in the card
design (42) the color B is associated with a weave causing an
orientation to the right in the lower fabric, and an orientation to
the left in the upper fabric. This, for instance, may be the weave
of FIG. 4 or of FIG. 13.
[0089] Anywhere a box of the color C is not situated over a box of
color B, the color C is maintained in the final card design (42).
In these places in the lower fabric, the predominant orientation to
the left may be maintained, whereas in the upper fabric the figure
forming orientation to the right should be obtained. Therefore, in
the card design (42) the color C is associated with a weave causing
an orientation to the left in the lower fabric, and an orientation
to the right in the upper fabric. This may be the weave of FIG. 5
or of FIG. 14. The final card design (42) with boxes of the colors
A, B and C is shown in FIG. 22.
[0090] When three orientations should be obtained in the shadow
velours fabrics, there are nine different combinations of
orientations possible for the fabrics to be woven face-to-face.
Therefore, nine colors should be used in the final card design.
When making such a card design, the first thing to do, is to make a
first auxiliary card design for the lower fabric, in which the
dominant orientation is indicated by a color A and the two other
orientations by the color B and by the color C. In a second
auxiliary card design the mirror image for the upper fabric is
represented. In this second auxiliary card design, the color A is
likewise chosen for the dominant orientation. For the two other
figure-forming orientations, the color D and the color E are used
respectively.
[0091] Then the second auxiliary card design will be placed on the
first auxiliary card design and on that basis four preparing card
designs will be made. In the preparing card designs, the two
overlapping figures are represented each time on the dominant
background orientation, using color A.
[0092] In the first preparing card design a color F is attributed
to the boxes where colors B and D are overlapping. In the second
preparing card design a color G is attributed to the boxes where
colors B and E are overlapping. In the third preparing card design
a color H is attributed to the boxes where colors C and D are
overlapping, and in the fourth preparing card design a color I is
attributed to the boxes where colors C and E are overlapping.
Finally, the nine colors (A to I) of the four preparing card
designs are transferred to one final card design. Then a weave is
associated with each color A to I), resulting in the orientations
required in the upper and lower fabrics. To that effect, a choice
is made from the weaves of the FIGS. 1 to 9 or of the weaves of the
FIGS. 10 to 18. With this method, colored weft yarns may also be
used as is known from the present state of the art.
[0093] This method makes it possible to produce shadow velours
fabrics by applying the face-to-face weaving technique, the upper
and lower fabrics having correctly readable characters, numerals
and logos as figure drawings in the pile face. It is understood
that this patent protection also applies to methods where only one
card design might be made for one part and the operations described
might be automated by means of a computer system and software and
by the input of suitable instructions. It is likewise understood
that this patent protection also applies to shadow velours fabrics
manufactured according to this method.
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