U.S. patent application number 10/168840 was filed with the patent office on 2003-03-27 for two-component plastic closure and method for producing said closure as a one-component part.
Invention is credited to Seelhofer, Fritz.
Application Number | 20030057209 10/168840 |
Document ID | / |
Family ID | 4231938 |
Filed Date | 2003-03-27 |
United States Patent
Application |
20030057209 |
Kind Code |
A1 |
Seelhofer, Fritz |
March 27, 2003 |
Two-component plastic closure and method for producing said closure
as a one-component part
Abstract
The plastic closure consists of an upper closure part (1) and a
lower closure part (2) which in the condition of being used form
separate parts (1,2). These two closure parts (1,2) are connected
to one another as one piece via a hinge (7) or hinging strip (7),
which permit the closure parts (1,2) to be pivoted apart by
180.degree.. In this pivoted apart condition the closure is then
injected as one-piece part in one go. The hinge (7) or hinging
strip (7) is connected to one or both closure parts (1,2) via
break-off locations. It may be torn away from these by hand and
thus serves as a first-opening guarantee.
Inventors: |
Seelhofer, Fritz; (Lindau,
CH) |
Correspondence
Address: |
Edwin D Schindler
Five Hirsch Avenue
P O Box 966
Coram
NY
11727-0966
US
|
Family ID: |
4231938 |
Appl. No.: |
10/168840 |
Filed: |
August 5, 2002 |
PCT Filed: |
December 8, 2000 |
PCT NO: |
PCT/CH00/00653 |
Current U.S.
Class: |
220/259.1 ;
215/235 |
Current CPC
Class: |
B65D 47/123 20130101;
B65D 47/242 20130101; B65D 2401/60 20200501; B65D 47/128 20130101;
B65D 2401/15 20200501; B65D 47/14 20130101 |
Class at
Publication: |
220/259.1 ;
215/235 |
International
Class: |
B65D 043/16 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 22, 1999 |
CH |
2358/99 |
Claims
1. A two-part plastic closure with an upper closure part (1) and
with a lower closure part (2) which in the condition of use form
two separate parts (1, 2), characterised in that the two closure
parts (1, 2) are connected to one another as one piece via a hinge
(7) or a hinging strip (7), which permits the closure parts (1, 2)
to be pivoted apart by 180.degree., in which position the closure
may be injected in one go as a one-piece part, as well as in that
this hinge (7) or hinging strip (7) either via break-off locations
is connected to at least one of the two closure parts (1, 2) so
that by hand it may be torn away from the closure part (1, 2)
concerned, or that the hinge (7) or hinging strip (7) comprises an
initial-tear location so that by way of rotating the closure part
(1) it begins to tear by shearing-off and is thus separable.
2. A two-part plastic closure according to claim 1, characterised
in that the hinge (7) or hinging strip (7) comprises an
initial-tear location which consists of a thin region (36) within
the injected film hinge (7), wherein after injection on both sides
pieces (39, 40) are punched away from this film hinge so that the
thin region (36) on both sides extends up to the edge of the acting
hinge and by way of rotating the closure part (1) begins to tear by
shearing-off and is thus separable.
3. A two-part plastic closure according to claim 1 characterised in
that the hinge (7) or hinging strip (7) is connected to both
closure parts (1, 2) via break-off locations so that it may be torn
away from these by hand.
4. A two-part plastic closure according to one of the claims 1 or
3, characterised in that the break-off locations are formed by fine
material bridges to the respective closure parts (1, 2).
5. A two-part plastic closure according to one of the claims 1, 3
or 4, characterised in that the break-off location is formed by a
seam (8, 9) of a film hinge (7) to the respective closure part
(1,2), wherein this seam (8,9) comprises a tear-start location so
that it may be separated by hand by tearing the hinge (7) away
from, the corresponding closure part (1,2).
6. A two-part plastic closure according to one of the claims 1, 3,
4 or 5, characterised in that the hinge (7) forms a film hinge and
in the direction of its pivot at least on its one side there is
formed a tab (10, 24, 26, 33) for tearing away the film hinge
(7).
7. A two-part plastic closure according to one of the claims 1 or
3, characterised in that the two closure parts (1,2) are connected
via a hinging strip (7) which running perpendicular to the pivot is
formed on one of the two closure parts (1,2) via one or more fine
material bridges, and that this strip (7) at its one end is shaped
into a tab (10, 24, 26, 33) in a manner such that the break-off
location may be separated by hand by tearing on the tab (10, 24,
26, 33).
8. A two-part plastic closure according to one of the claims 1 or
3, characterised in that the two closure parts (1,2) are connected
via a hinging strip (7) which running perpendicular to the pivot is
formed on both two closure parts (1,2) via one or more fine
material bridges, and that this strip (7) at its one end or at both
ends is shaped into a tab (10, 24, 26, 33) in a manner such that
the break-off location may be separated by hand by tearing on the
tab (10, 24, 26, 33).
9. A method for manufacturing a two-part plastic closure in the
form of a one-piece part, characterised in that the two closure
parts (1, 2) with regard to their position on the closed closure
are injected pivoted away from one another by 180.degree. as a
one-piece part and connected via a hinge (7) or hinging strip (7),
wherein the hinge (7) or hinging strip (7) is connected at least to
one of the two closure parts (1,2) merely via break-off locations
or it comprises an initial-tear location in the form of a thin
region (36) punched free.
10. A method according to claim 9, characterised in that a) the two
closure parts (1, 2) with regard to their position on the closed
closure are injected pivoted away from one another by 180.degree.
as a one-piece part and connected via a hinge (7) or hinging strip
(7); b) the closure parts (1,2) and the hinge (7) or hinging strip
(7) connecting them are ejected; c) the closure parts (1,2) are
pivoted together by 180.degree. and in this position by way of
material deformation are snapped into provided snap closures or in
the-case of a threaded closure the inner thread (17) of the upper
closure part (1) is pressed over the thread groove (13) of the
lower closure part (2); d) for any realisation of a initial-tear
location, pieces of the hinge (7) or hinging strip (7) laterally
extending up to into the thin region (36) are cut away.
Description
[0001] The invention relates to a two-part plastic closure, as is
used for all types of bottles, tubes and similar containers for
fluid or viscous contents. Such a closure is designed two-part
because a lower closure part forms a fixture, which thus is placed
onto the container, for example by way of screwing it onto the body
of the bottle or tube, and because the closure further includes an
upper closure as a cap which together with the lower closure part
forms the closure. The opening and closing of such a closure may be
effected in that the upper closure part with respect to the lower
closure part may be brought into such a position in which the
closure as a whole forms an open flow-through channel which may be
closed again by way of a reversed movement of the cap, with which
the closure is thus closed again. The closure in another embodiment
may however also be opened such that the upper closure part is
screwed from the other and it completely separated from this,
whereupon the lower closure part acts as a pour-out piece, instead
of screwing off the upper closure part, if it is held on the lower
closure part by way of snap closures, it may be simply pulled from
this. As one variant, in the pulled-off condition is may be secured
on a safety strip on the lower closure part or on the bottle. Such
two-part closures are indeed conventionally injected in plastic
with two separate tools. This is in particular the case with a
central pin closures which are opened and closed in that the upper
closure part is rotated with respect to the lower part by a certain
amount. Likewise this is the case with all purely rotary closures
with which the upper closure part is completely screwed off for
opening. With such a two-part two-part closure, the design of a
guarantee closure causes particular problems, and the solutions for
this are complex.
[0002] It is the therefore object of the present invention on the
one hand to provide a two-part closure which may be injected in
plastic as a single part in one manufacturing operation, and which
may selectively provide a first-opening guarantee. Furthermore it
is the object of the present invention to provide a method for
injecting such a closure as a single-piece part so that the
two-part closure may thus be injected in one go.
[0003] On the one hand this object is achieved by a two-part
plastic closure with a lower and an upper closure part which in the
condition of use form separate parts, which is characterised in
that the two closure parts are connected to one another via a hinge
or a hinging strip, which permits the closure parts to pivot apart
by 180.degree., in which position the closure may be injected as a
one-piece part in one go, as well as in that this hinge or hinging
strip either via break-off locations is connected to at least one
of the closure parts so that it may be torn away by hand from the
closure part concerned, or that the hinge or hinging strip by way
of rotating the closure part begins to tear by shearing away and
thus may be separated.
[0004] This object is further achieved by a method for
manufacturing a two-part plastic closure in the form of a
single-piece part which is characterised in that the two closure
parts with regard to their position on the closed closure are
injected pivoted away from one another by 180.degree. as a
one-piece part and connected via a hinge or hinging strip, wherein
the hinge or hinging strip is connected to at least one of the
closure elements merely via break-off locations or a tear
location.
[0005] In the drawings there are shown advantageous formations of
such a two-part plastic closure, and its manufacture and function
is hereinafter described and explained in detail by way of these
drawings.
[0006] There are shown in:
[0007] FIG. 1: a two-part central rotary closure in the closed
condition, seen from the rear;
[0008] FIG. 2: the central rotary closure according to FIG. 1 in
the ejected condition in a longitudinal section seen from the side,
assembled onto a thread of a bottle;
[0009] FIG. 3: the central rotary closure according to FIG. 1 in
the ejected condition before its assembly onto a bottle thread, in
a view from above;
[0010] FIG. 4: the central rotary closure according to FIGS. 1 and
2 in a longituudinal section seen from the side, assembled onto the
thread of a bottle, on popping the upper closure part onto the
lower closure part;
[0011] FIG. 5: a central rotary closure in the still unopened
condition assembled onto a bottle, with an intact first-opening
guarantee strip;
[0012] FIG. 6: a rotary closure with a bottle formed as one piece
on the lower closure part, in the condition directly after the
ejection;
[0013] FIG. 7: the rotary closure according to FIG. 6 in the
condition after filling the bottle and the closing of the
closure;
[0014] FIG. 8: a rotary closure with a guarantee strip with an
initial-tear location and with a bottle formed as one piece on the
lower closure part, in the condition directly after ejection;
[0015] FIG. 9: the rotary closure according to FIG. 8 with a
closure cap pivoted closed about the film hinge acting as a
guarantee strip;
[0016] FIG. 10: the guarantee strip of the rotary closure according
to FIG. 9, before the retromachining, still without the
initial-tear location, in an enlarged representation;
[0017] FIG. 11: the guarantee strip of the rotary closure according
to FIGS. 9 and 10 with an initial-tear location realised by way of
cut-aways, in an enlarged representation;
[0018] FIG. 12: the guarantee strip according to FIG. 11 during the
opening movement of the rotary closure, below which it is separated
by shearing off;
[0019] FIG. 13: a two-part snap-closure with a film hinge as a
first-opening guarantee strip, in the opened condition, after
ejecting;
[0020] FIG. 14: the closed snap-closure according to FIG. 13 seen
from the rear;
[0021] FIG. 15: the snap closure according to FIG. 13 after removal
of the first first-opening guarantee strip and after its opening,
that is to say after the lifting away of the upper closure
part.
[0022] The closure according to the invention may be realised in
various embodiments. Thus one basically differentiates between
closures whose upper closure part is completely screwed away from
the lower closure part by way of a thread. There are then closures
whose closure parts likewise comprise threads, or thread turns
prsent only in sections, with which the upper closure part may be
rotated with respect to the lower closure part only over a certain
rotational range, in that this upper closure part in both
rotational directions comes to abut on suitably provided material
continuations. Such closures have a central pin on the lower
closure part which as an extended part fits into a corresponding
opening in the upper closure part and seals the closure in the
closed condition of the closure. For opening one rotates the upper
closure part about a certain free rotational range away from the
lower closure part so that the extended part is pulled out of the
opening and thus the closure is opened for pouring out the fluid.
With regard to this one speaks of a central pin closure. There are
also used closures with which the upper closure part is held on the
lower closure part by way of one or more snap closures so that thus
the upper closure part is completely separable from the lower
closure as with a rotary closure.
[0023] In FIG. 1 there is firstly shown a central pin closure or
more exactly a central pin rotary closure in the closed condition
from the rear. One can see the upper closure part 1 and below this
the lower closure part 2. The upper closure part 1 which may be
screwed towards the lower closure part 2 is surrounded by a knurled
gripping edge 3 and upwardly ends into a dome-like pour-out 4 which
at the very top comprises a pour-out opening 5. The lower closure
part 2 forms the counter piece which is rigidly assembled onto a
bottle. The closure shown here comprises a film hinge 7 which
connects the two closure parts 1 and 2. This film hinge 7 is
connected above and below to the corresponding closure parts 1,2
via in each case one seam 8, 9 designed as a break-off location. On
the one side of the film hinge 7, in the view here to the left, the
film hinge 7 is extended in the circumferential direction of the
closure and with this extension forms a grip tab 10 which for its
part is connected along its upper edge to the upper closure part 1
via fine material bridges.
[0024] In FIG. 2 this central pin rotary closure is shown in the
ejected condition in a longitudinal section seen from the side,
already assembled onto the bottle thread 16 of a bottle 18. This
condition shown here does not correspond to the opened condition on
the bottle, but as mentioned the condition directly after the
ejection. On the lower closure part 2 one recognises the central
pin 12 held by a special design 11. The thread part on the lower
closure part 2 here consists merely of a threaded groove 13 which
furthermore extends only over one part of the circumference. In the
lower region of the lower closure part 2 this comprises an inner
thread 14 by way of which it may be screwed onto the outer thread
16 of a bottle 18. The lower edge 15 is designed as a security edge
which snaps in so that the lower closure part 2 once screwed onto a
bottle thread 16 of a bottle is difficult to be screwed off this
again. As is evident here, in the ejected condition of the two-part
closure, the upper closure part 1 is still connected by a hinge 7
to the lower closure part 2. One may also see the break-off
locations 8, 9 in the form of the two thin seams via which the
hinge 7 is connected to the two closure parts 1, 2. The hinge 7 is
extended in the circumferential direction via the indicated
continuation 10 on the upper closure part 1 and this continuation
forms a grip tab 10 which is connected to the lower edge 21 of the
upper closure part 1 only via a few fine material bridges. The
upper closure part 1 comprises an inner thread which is formed by
one or more beads 17 which however only extend over a part of the
circumference. One also sees the dome-shaped pour-out 4 with its
pour-out opening 5, which here of course is directed downwards.
[0025] In FIG. 3 this closure is shown after ejection, in a view
from above. Here one can already see the knurling of the grip edge
3 of the upper closure part 1 and furthermore the thread beads 17
which here in each case extend over roughly a third of the
circumference of the closure part walling. Furthermore a grip tab
10 is also visible in this view, which extends laterally from the
hinge 7 along a part of the lower edge 21 of the upper closure part
1. This grip tab 10 is connected to the lower edge 21 of the
closure part 1 merely at a few locations quasi in a point-like
manner via fine material bridges, so that it may be easily torn
away from it.
[0026] After screwing the lower closure part 2 onto a filled bottle
18 the upper closure part is manually pressed onto the lower
closure part 1 by pivoting together. This is effected with the
force necessary to extend the walling of the upper closure part 1
so far that the beads 17 which form the thread on the upper closure
part 1 are able to be popped over the outer diameter of the outer
walling 19 of the lower closure part 1, until finally the beads 17
snap into the corresponding thread grooves 13 on the lower closure
part 2. This popping-on is shown in FIG. 4 at the moment when the
upper closure part 1 must still be pressed a few millimetres
further downwards until it finally lies on the shoulder 20 of the
lower closure part 2 with its lower edge 21. When the upper closure
part has reached this position it is rigidly and immovably held on
the lower closure part since via the hinge 7 it is connected to the
same, which renders a rotation impossible. The hinge 7 then acts as
a first-opening guarantee strip. The bottle thus together with the
hinge is marketed. The hinge 7 therefore assumes two functions:
firstly on injecting the closure it acts as a material connection
between the upper 1 and the lower closure part 2 so that the
closure may be injected as a single piece in one go, and secondly
the hinge 7 acts as a first-opening guarantee strip. The hinge 7
may specifically be torn away before opening the bottle or closure
for the first time. For this one grips the grip tab 10 and tears
this in the opposite circumferential direction to which it points.
By way of the momentum of the tearing hand the hinge 7 may be torn
away from the closure at its seams 8, 9 which indeed are designed
as break-off locations. So that the tearing-away becomes even
easier, the seams 8, 9 at their ends may have an initial-tear
location. After separating away the hinge or the guarantee strip 7,
the upper closure part 1 is free and has no material connection to
the lower closure part 2 and therefore may be rotated relative to
this, by which means the closure may be opened and by rotating back
may be closed again, as already described.
[0027] FIG. 5 shows a bottle 6 with a further two-part closure of
an upper closure part 1 and a lower closure part 2. With this it is
likewise the case of a central pin rotary closure. At the top the
pin 22 acting as an extended part slightly projects from the
pour-out 23. In the example shown here the hinge is extended in the
direction towards the bottle opening into a grip tab 24. The hinge
itself in the same manner as already described with regard to the
FIGS. 1 to 4 is connected to the closure parts 1, 2 via seams which
are designed as break-off locations. Again the hinge acts as a
material bridge for the single-piece injection of the two-part
closure in one working operation, for which the two closure parts
1,2 may be pivoted away from one another by 180.degree.. When the
closure is assembled, the hinge then acts as a first-opening
guarantee strip. It may be torn away for opening, whereupon the two
closure parts 1,2 may be completely separated from one another.
[0028] In FIG. 6 there is shown a rotary closure with which the
lower closure part 2 merges directly and as one-piece into a
plastic bottle 25. The upper closure part 1 is connected to the
lower closure part 2 via a film hinge 7. On the upper closure part
1 the film hinge 7 is shaped into a guarantee strip, 26 which fits
snugly along the circumferential wall of the upper closure part 1
and which is only connected to the upper closure part 1 via a few
break-off locations. However these break-off locations are still
sufficient for the material flow in order to inject the upper
closure part 1 as one piece and thus in one go together with the
lower closure part 2 and the bottle 25 which hangs on this. The
filled bottle 25 is closed in that the upper closure part 1, whilst
snapping-in the thread parts with a pressing force sufficient for
this, is pressed onto the lower closure part 2, For opening the
bottle 25 one grips the tab 26 and tears it away by which means the
upper closure part 1 is set free. Accordingly the tab 26 also with
the film hinge 7 or its pivot may be torn away from the lower
closure part 2 in that this pivot is formed sufficiently thin so
that it acts as a break-off location. In one variant also the
region on the other side of the pivot may to the same extent be
connected to the lower closure part 2 or to the bottle 25 via a
part which may be torn away at envisaged break-off locations.
[0029] In FIG. 7 this bottle 25 with the rotary closure is shown in
a view as is seen when being supplied and ready to be sold. Over a
certain part of the circumference of the upper closure part 1 there
extends the tab 26 which is merely connected to the upper closure
part 1 via material bridges 27, wherein these material bridges act
as break-off locations. On the other hand when injecting they serve
the material flow into the corresponding tool. Furthermore one may
see the film hinge 7 which may be separated along its pivot on
tearing away the tab 26. This pivot is formed thinly enough for it
to be easily separable. In this case after opening the cap 1 the
lower film hinge part remains still, and the torn-away tab 26 with
the upper film hinge part may be thrown away.
[0030] In FIG. 8 there is shown a further rotary closure with which
the lower closure part 2 merges directly and as one piece into a
plastic bottle which is not shown here. The upper closure part 1 is
again connected to the lower closure part 2 via a film hinge 7.
Instead of a break-off location, here an initial-tear location is
realised. For this the film hinge 7 has a thin region 36. Thus the
strength of the film hinge 7 is reduced over this whole region 36.
FIG. 8 shows this film hinge 6 with a thin region 36 after
ejection. So that one achieves a safely functioning initial-tear
location, one subsequently machines this film hinge 7 as is
described in the following.
[0031] After injecting the rotary closure, this is firstly closed
by machine in that the upper closure part 1 is pressed onto the
lower closure part 2 by pivoting about the film hinge 7. The inner
and outer screw thread on the two closure parts 1, 2 is dimensioned
such that the upper closure part 1 may still just be clicked onto
the lower closure part 2 and the two threads thus snap into one
another and assume the same position to one another as if the upper
closure part 1 had been screwed onto the lower one. The rotary
closure which has been dosed In this way is then as in FIG. 9.
[0032] Now a subsequent machining takes place in that specifically
on both sides of the film hinge 7 a piece is cut away by machine,
and specifically such a large piece that in each case the piece to
be cut away overlaps with the thin region 36. FIG. 10 shows the
film hinge on the closed closure in an enlarged representation. The
thin region 36 is drawn-in dashed, and the lines 37, 38 along which
to the left and right of the film hinge 7 a piece 38, 40 is cut are
shown dot-dashed. The overlappings are therefore clearly
visible.
[0033] FIG. 11 shows the film hinge 7 after the two pieces have
been cut away to the left and right. The thin region 36 now to the
left and to the right extends up to the edge of the film hinge 7
which still remains. The cutting-away is effected by way of a
suitable punching tool by way of a machined punching of the closure
which has previously been tensioned in a punching machine.
[0034] The FIG. 12 shows the function of the film hinge 7 weakened
by the thin region 36. If specifically the upper closure part 1 is
rotated in the anti-clockwise direction then thanks to the size of
the outer diameter of the closure cap and the weakness of the film
hinge 7, as a result of the thin region 36 provided here and
extending up to the edge of the film hinge 7, it is possible for a
tearing of this thin region 36 along the line 41 to be effected.
The film hinge 7 is therefore separated as a result of the shearing
and the closure cap 1 may be screwed away.
[0035] FIG. 13 shows a further embodiment of the two-part closure,
here in the form of a closure which may be closed via snap
closures. This again consists of a lower closure part 2 which may
be screwed onto the outer thread of a container by way of an inner
thread on its lower side not visible here. It is connected to the
upper closure part 1 via a thin plastic strip 7. The effective
closure of the closure is effected in that the pour-out 28 at its
upper edge comprises a bead 29 over which one may pop on a circular
wall 30 on the upper closure part 1, wherein an edge 31 projects on
the inner side of this circular wall 30 so that here there is
formed a slightly smaller diameter in a manner such that this edge
31 with a slight material deformation may be popped over the bead
29 and snapped in behind it. The plastic strip 7 which connects the
two closure parts 1, 2 to one another is dimensioned and formed on
the two closure parts 1, 2 in a manner such that its connection
seams 32 are designed as thin locations or the strip as a whole is
formed sufficiently thin. In order to simplify the tearing-away of
the plastic strip 7, one grips a tab 33 with the thumb and index
finger and tears this in the direction of the plastic strip 7 so
that this is separated away from the two closure parts 1, 2 along
its thin seams. After this the closure is ready for opening. The
plastic strip 7 thus firstly serves as a location for the material
flow for injecting the two closure parts 1, 2, and afterwards as a
first-opening guarantee strip. Once removed, the upper closure part
is simply pressed onto the lower one 2 for closing the closure, so
that the snap mechanism is effected and thus the upper closure 1 is
sealingly snapped onto the lower closure part 2.
[0036] In FIG. 14 this closure is yet shown in a view from the
rear, with an intact guarantee strip 7. The two tabs 33 are thus
formed on the plastic strip 7, like ears and have a knurling so
that they may be securely gripped,
[0037] FIG. 15 shows the closure with separated closure parts 1 and
2 after removing the guarantee strip. It is clear that such a
closure may be optionally formed so that a further longer plastic
strip 35 connects the two closure parts 1, 2, as is indicated here.
With this it is ensured that the upper closure part 1 does not get
lost when it is removed from the lower one for pouring.
[0038] With regard to the manufacture of such a closure, the
particularity is to be seen in that it may be injected in one go as
a one-piece part, although it is indeed of two parts, finally in
the function of the two completely separated parts 1 and 2. This
injecting as a one-piece part in one operating procedure permits
considerable savings, on the one hand with regard to the tooling
costs and on the other hand with the injection work. The closure
parts which until now have been separately manufactured now no
longer have to be put together but may, as a single, connected
part, be passed further directly for assembly on bottles which have
already been filled. According to the invention the manufacture is
effected such that the two closure parts with regard to their
position on the closed closure are injected pivoted away from one
another by 180.degree. as a one-piece part and connected via a
hinge or hinging strip the two closures 1, 2. At the same time the
hinge or hinging strip is used as a material flow location. It then
forms a guarantee strip on the finished injected part in that it is
connected to the one, the other or both closure parts 1,2 only via
break-off lcoations. In detail the method up to assembly of the
closure on the bottle proceeds in that firstly the two closure
parts pivoted away from one another by 180.degree. are injected as
a one-piece part. The closure parts and the hinge or hinging strip
connecting them are ejected. Finally the closure parts are pivoted
together by 180.degree.. If the closure parts are held together via
snap closures then in this position by way of material deformation
they are snapped into envisaged snap closures, and if it is the
case of a rotary closure, the inner thread of the upper closure
part 1 is pressed over the outer thread of the lower closure part.
With this the closures, closed by guarantee is a ready for assembly
onto a container.
List of Reference Numerals
[0039] 1 upper closure part
[0040] 2 lower closure part
[0041] 3 grip edge
[0042] 4 pour-out
[0043] 5 pour-out opening
[0044] 6 bottle (FIG. 5)
[0045] 7 film hinge or hinging strip
[0046] 8 upper seam of the film hinge
[0047] 9 lower seam of the film hinge
[0048] 10 grip tab
[0049] 11 design for holding the central pin
[0050] 12 central pin
[0051] 13 thread groove on the lower closure part 2
[0052] 14 inner thread on the lower closure part 2 for screwing
onto the bottle
[0053] 15 lower edge of the lower closure part 2
[0054] 16 outer thread of the bottle
[0055] 17 bead thread on the lower closure part 1
[0056] 18 bottle (FIGS. 14)
[0057] 19 walling on the lower closure part 2
[0058] 20 shoulder on the lower closure part 2
[0059] 21 lower edge of the upper closure part 1
[0060] 22 pin
[0061] 23 pour-out
[0062] 24 grip tab
[0063] 25 plastic bottle (FIGS. 6 & 7)
[0064] 26 guarantee strip around the upper closure part 1
[0065] 27 break-off locations
[0066] 28 pour-out
[0067] 29 bead on the pour-out 28
[0068] 30 circular wall on the closure part 1
[0069] 31 projecting edge on the inner side of the circular wall
30
[0070] 32 connection seams, plastic strip
[0071] 33 tabs on 7
[0072] 34 knurling on the tabs
[0073] 35 security strip
[0074] 36 thin region
[0075] 37, 38 lines along which to the left and right on the film
hinge 7 a piece 39, 40 is to be way
[0076] 39, 40 piece to be cut away
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