U.S. patent application number 11/145695 was filed with the patent office on 2005-10-20 for light-protective textile.
This patent application is currently assigned to Carl Freudenberg KG. Invention is credited to Groten, Robert, Mooshian, Linda, Riboulet, Georges.
Application Number | 20050233665 11/145695 |
Document ID | / |
Family ID | 7633819 |
Filed Date | 2005-10-20 |
United States Patent
Application |
20050233665 |
Kind Code |
A1 |
Groten, Robert ; et
al. |
October 20, 2005 |
Light-protective textile
Abstract
The present invention relates to a textile light-protective
material composed of a microfilament non-woven fabric having a mass
per unit area of 20 to 300 g/m.sup.2, in which the non-woven fabric
is made of melt-spun and drawn multicomponent continuous filaments
having a titer of 1.5 to 5 dtex that are deposited immediately to
form a non-woven material and at least 80% of the multicomponent
continuous filaments, after an optional pre-bonding, are split to
form continuous microfilaments having a titer of 0.05 to 2.0 dtex
and are bonded.
Inventors: |
Groten, Robert; (Sundhoffen,
FR) ; Mooshian, Linda; (Haverhill, MA) ;
Riboulet, Georges; (Colmar, FR) |
Correspondence
Address: |
DAVIDSON, DAVIDSON & KAPPEL, LLC
485 SEVENTH AVENUE, 14TH FLOOR
NEW YORK
NY
10018
US
|
Assignee: |
Carl Freudenberg KG
Weinheim
DE
|
Family ID: |
7633819 |
Appl. No.: |
11/145695 |
Filed: |
June 6, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
11145695 |
Jun 6, 2005 |
|
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10220907 |
Jan 30, 2003 |
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Current U.S.
Class: |
442/340 ;
442/347; 442/361; 442/362; 442/401 |
Current CPC
Class: |
D04H 3/016 20130101;
D04H 3/009 20130101; Y10T 442/68 20150401; Y10T 442/614 20150401;
Y10T 442/637 20150401; Y10T 442/638 20150401; D04H 3/011 20130101;
D04H 3/11 20130101; Y10T 442/681 20150401; Y10T 442/20 20150401;
D04H 3/16 20130101; D04H 3/12 20130101; A47H 23/08 20130101; Y10T
442/60 20150401; Y10T 442/622 20150401 |
Class at
Publication: |
442/340 ;
442/361; 442/362; 442/347; 442/401 |
International
Class: |
D04H 003/16; D04H
001/00; D04H 003/00 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 2, 2001 |
WO |
PCT/EP01/02357 |
Mar 7, 2000 |
DE |
DE 100 11 053.3 |
Claims
1-11. (canceled)
12. A textile light-protective material comprising: a microfilament
non-woven fabric having a mass per unit area of 20 to 300
g/m.sup.2, the non-woven fabric including multicomponent continuous
filaments, the filaments being melt-spun and drawn filaments having
an original titer of 1.5 to 5 dtex deposited immediately to form a
non-woven material; the multicomponent continuous filaments of the
non-woven material being split continuous microfilaments having a
titer of 0.05 to 2.0 dtex and being bonded, a degree of splitting
of the multicomponent continuous filaments being greater than
80%.
13. The textile light-protective material of claim 12 wherein the
multi-component continuous filaments are pre-bonded filaments.
14. The textile light-protective material as recited in claim 12
wherein the original titer is 1.5 to 3 dtex and the titer of the
split continuous microfilaments is 0.1 to 1.0 dtex.
15. The textile light-protective material as recited in claim 12
wherein the multicomponent continuous filament is a bicomponent
continuous filament consisting of two incompatible polymers.
16. The textile light-protective material as recited in claim 15
wherein the two incompatible polymers are a polyester and a
polyamide.
17. The textile light-protective material as recited in claim 12
wherein the multicomponent continuous filaments have a cross
section of an orange-like multisegment structure, each segment in
alternating fashion containing one of the two incompatible polymers
and/or possessing a "side-by-side" structure.
18. The textile light-protective material as recited in claim 12
wherein the multicomponent continuous filament includes at least
two incompatible polymers, and wherein at least one of the
incompatible polymers contains an additive in quantities up to 10%
wt.
19. The textile light-protective material as recited in claim 18
wherein the additive is at least one of a coloring pigment, a
permanently acting antistatic agent, and a hydrophilic or
hydrophobic-altering agent.
20. A method for manufacturing a textile light-protective material
having a microfilament non-woven fabric with a mass per unit area
of 20 to 300 g/m.sup.2, comprising the steps of: spinning and
drawing a melted mass to form multicomponent continuous filaments
having a titer of 1.5 to 5 dtex; depositing immediately the
multicomponent continuous filaments to form a non-woven material;
and bonding the non-woven material using high-pressure fluid jets
and simultaneously splitting the multicomponent continuous
filaments into continuous microfilaments having a titer of 0.05 to
2.0 dtex, a degree of splitting of the multicomponent continuous
filaments being greater than 80%.
21. The method as recited in claim 20 wherein the non-woven
material is pre-bonded before the bonding and step.
22. The method as recited in claim 20 wherein bonding step includes
subjecting two sides of the non-woven material to the high-pressure
fluid jets.
23. The method as recited in claim 20 further comprising spin
dyeing the multicomponent continuous filaments.
24. The method as recited in claim 20 further comprising
point-calendering the textile light-protective material.
25. The method as recited in claim 20 further comprising
manufacturing a curtain, drape, or rolling blind from the
light-protective material.
26. The method as recited in claim 20 further comprising
manufacturing a vertical jalousie or a pleated blind from the
light-protective material.
27. The textile light-protective material as recited in claim 12
wherein the material is part of a curtain, drape, or rolling
blind.
28. The textile light-protective material as recited in claim 12
wherein the material is part of a vertical jalousie or a pleated
blind.
Description
[0001] The present invention relates to a textile light-protective
material for windows, composed of a micro filament non-woven fabric
having a mass per unit area of 20 to 300 g/m.sup.2.
[0002] Camouflage and light-protective devices for windows are
provided in a variety of specific embodiments. In principle, the
distinction should be made between soft and hard materials for this
purpose. Curtains, drapes, or roller blinds are made of soft
textile materials, and vertical or horizontal jalousies and pleated
blinds are made of hard materials. Appropriate textile
light-protective devices are also used for screening excessive
light radiation, for example, in winter gardens. From the document,
U.S. Pat. No. 5,436,064, stiff textile composites are known which
are made of a non-woven fabric composed of thermoplastic material
and a woven fabric that is assembled, stitched, and fused together
by heating. Furthermore, from the document, U.S. Pat. No.
5,600,974, stiff textile composites are known which are made of
non-woven fabrics that are embroidered using yarn in a weaving
frame. In this context, the non-woven fabric is made of two
different fibers, of which one is thermoplastic and is melted on
after the yarn embroidery. The known textile composites can also be
provided with a foamed plastic layer and are suitable for
manufacturing vertical jalousies, pleated blinds, wall panels, or
automobile interior coverings.
[0003] The known textile light-protective materials have
disadvantages with regard to the high use of material, insufficient
screening of the impinging light especially in the UV range, or
their resistance to light. In addition, a rational manufacturing
method is desirable.
[0004] The present invention has the objective of indicating a
textile light-protective material as well as a method for
manufacturing it.
[0005] According to the present invention, the objective is
achieved by a textile light-protective material that is made of a
microfilament non-woven fabric having a mass per unit area of 20 to
300 g/m.sup.2, the non-woven fabric being composed of melt-spun and
drawn multicomponent continuous filaments having a titer of 1.5 to
5 dtex that are deposited immediately to form a non-woven material,
and at least 80% of the multicomponent continuous filaments are,
after an optional pre-bonding, split to form continuous
microfilaments having a titer of 0.05 to 2.0 dtex and are bonded.
The isotropic fiber distribution in the non-woven fabric makes it
unnecessary to hem it and to take into account the machine running
direction. As a result of the continuous filaments, the textile
light-protective material has no unraveled fibers. A chemical
finishing is not necessary.
[0006] The textile light-protective material is advantageously one
in which the non-woven fabric having a mass per unit area of 20 to
300 g/m.sup.2 is made of melt-spun and aerodynamically drawn
multicomponent continuous filaments having a titer of 1.5 to 3 dtex
that have been immediately deposited to form a non-woven material,
and at least 80% of the multicomponent continuous filaments are
split to form continuous microfilaments having a titer of 0.1 to
1.0 dtex and are bonded.
[0007] The textile light-protective material is advantageously one
in which the multicomponent continuous filament is a bicomponent
continuous filament made of two incompatible polymers, specifically
a polyester and a polyamide. A bicomponent continuous filament of
this type has a good capacity for splitting into continuous
microfilaments, and it produces a favorable ratio of strength to
mass per unit area. At the same time, the textile light-protective
material according to the present invention, due to the polymers
that are used and their filament structure, is wrinkle-free, easily
washable, and fast drying, i.e., easy to maintain.
[0008] The textile light-protective material is advantageously one
in which the multicomponent continuous filaments have a cross
section marked by an orange-like multisegment structure, also
termed "pie," each segment in alternating fashion containing one of
the two incompatible polymers. In addition to this orange-like
multi-segment structure of the multicomponent continuous filaments,
a "side-by-side" (s/s) segment arrangement of the incompatible
polymers in the multicomponent continuous filament is also
possible, which is advantageously used for producing crimped
filaments. Segment arrangements of this type of the incompatible
polymers in the multicomponent continuous filament have proven to
be easy to split. The textile light-protective material has a very
favorable ratio of mass per unit area to UV-light absorption
capacity, so that highly effective light-protective materials can
be manufactured therefrom even when small amounts of material are
used.
[0009] The textile light-protective material is also advantageously
one in which at least one of the incompatible polymers forming the
multicomponent continuous filament contains an additive, such as
coloring pigments and/or permanently acting antistatic agents, in
quantities up to 10% wt. As a result of the additives, static
charges can be reduced or avoided. The textile light-protective
material, in particular when used as curtains or drapes, has
excellent maintenance properties with regard to its excellent
washability and short drying times.
[0010] The method according to the present invention for
manufacturing a textile light-protective material is seen in that
multicomponent continuous filaments are spun from the melted mass,
are drawn, and are deposited immediately to form a non-woven
material, a pre-bonding is carried out, and the non-woven fabric is
bonded by high-pressure fluid jets as it is simultaneously split
into continuous microfilaments having a titer of 0.05 to 2.0 dtex.
The textile light-protective material that is obtained in this
manner is very uniform with regard to its thickness, has an
isotropic fiber distribution, has no tendency to delaminate, and is
marked by high modular values.
[0011] The method for manufacturing the textile light-protective
material is advantageously carried out such that the bonding and
the splitting of the multicomponent continuous filaments is
accomplished by subjecting the non-woven fabric, which has been
optionally pre-bonded, to high-pressure water jets at least once on
each side. As a result, the textile light-protective material has
an excellent surface and a degree of splitting of the
multicomponent continuous filaments that is greater than 80%.
[0012] The textile light-protective material according to the
present invention is also advantageously subjected to a point
calendering to increase its wear resistance. For this purpose, the
split and bonded non-woven fabric is conveyed through heated
rollers, of which at least one roller has elevations, which result
in a pointwise melting of the filaments to each other.
[0013] The textile light-protective material, due to its excellent
haptic properties, is used for manufacturing curtains, drapes, or
rolling blinds. In this context, in the water-jet bonding of the
multifilament non-woven fabric, it is possible to carry out a
surface patterning, or pattern forming, through the selection of
the substrate.
[0014] The textile light-protective material is also advantageously
used for manufacturing vertical jalousies or pleated blinds, it
being possible to increase the stiffness of the material by a
stamp-calendering, by the fusing-on of a polymer component, and/or
by coating using a foamed plastic.
EXAMPLE 1
[0015] From an s/s polyester-polyamide (PES-PA6.6) bicomponent
continuous filament having a weight ratio of PES to PA6.6 of 60:40,
a fiber web having a mass per unit area of 134 g/m.sup.2 is
produced and is subjected to a water-jet needling on both sides at
pressures up to 230 bar. The bicomponent continuous filaments,
after the water-jet needling, which results in a simultaneous
splitting of the initial fibers, have a titer <1.5 dtex and a
thickness of 0.51 mm. For the tear resistance, 372 N were measured
in the machine running direction, and 331 N were measured in the
transverse direction. After irradiation on a black wall using a
xenon test lamp 150 S at a light energy of 152 W/m.sup.2 over 150
hours at a relative humidity of 45% and a temperature of 90 degrees
C., the change was ascertained through a comparison using 6 blue
tones. The sample was evaluated as >7 on a scale extending from
4 to 7.
EXAMPLE 2
[0016] From a 16-segment (PIE) polyester-polyamide (PES-PA6.6)
bicomponent continuous filament having a weight ratio of PES to
PA6.6 of 70:30, a fiber web having a mass per unit area of 116
g/m.sup.2 is produced and is subjected to a water-jet needling on
both sides at pressures up to 230 bar. The bicomponent continuous
filaments, after the water-jet needling, which results in a
simultaneous splitting of the initial fibers, have a titer <0.1
dtex and a thickness of 0.51 mm. For the tear resistance, 383 N
were measured in the machine running direction, and 324 N were
measured in the transverse direction. After irradiation on a black
wall using a xenon test lamp 150 S at a light energy of 152
W/m.sup.2 over 150 hours at a relative humidity of 45% and a
temperature of 90 degrees C., the change was ascertained through a
comparison using 6 blue tones. The sample was evaluated as >7 on
a scale extending from 4 to 7.
EXAMPLE 3
[0017] (OP-370) 7
EXAMPLE 4
[0018] (OP-465) .gtoreq.7
EXAMPLE 5
[0019] (OP-464) 7
EXAMPLE 6
[0020] (OP-690) 7
EXAMPLE 7
[0021] From a polyethylene terephthalate polyamide (PET-PA)
bicomponent continuous filament having a weight ratio of PET/PA66
in the elementary fiber of 70/30 and an additive of X % wt of
titanium dioxide, a fiber web having a mass per unit area of 80
g/m.sup.2 is produced and is subjected to a water-jet needling on
both sides at pressures up to 230 bar. The bicomponent continuous
filaments, after the water-jet needling, which results in a
simultaneous splitting of the initial fibers, have a titer of 0.1
to 0.8 dtex. The textile light-protective material has UV
protection of 50+, as determined in accordance with the
Australian-New Zealand Standard AS/NZS 4399:1996. In this context,
the transmission is measured in percent in a range from 250 to 450
nm.
* * * * *