U.S. patent application number 14/784704 was filed with the patent office on 2016-03-10 for welded part with barrier layer.
The applicant listed for this patent is GEORG MENSHEN GMBH & CO. KG. Invention is credited to Ulrich FLEISCHER, Frank ROMER, Jean-Paul ROOSENDAAL, Stefan WOLFF.
Application Number | 20160068316 14/784704 |
Document ID | / |
Family ID | 50828852 |
Filed Date | 2016-03-10 |
United States Patent
Application |
20160068316 |
Kind Code |
A1 |
WOLFF; Stefan ; et
al. |
March 10, 2016 |
WELDED PART WITH BARRIER LAYER
Abstract
The invention relates to a welded part (1) made from plastic
between the flexible walls of a container, in particular of a bag,
with a stub (3) which is formed integrally on the welded part at
the top and forms a pouring channel which connects the upper
pouring opening of the stub to the lower pouring channel region
(3a) of the lower welded region (2), wherein a barrier layer (6) is
arranged in the pouring channel, which barrier layer (6) is opened
by a projection (8) of a closure cap (7) which can be screwed onto
the stub (3), wherein the projection (8) of the closure cap (7),
which projection (8) reaches into the pouring channel (4), is
fastened to the barrier layer (6), as a result of which the barrier
layer (6) is removed completely or partially when the closure cap
(7) is screwed open.
Inventors: |
WOLFF; Stefan; (Reichshof,
DE) ; FLEISCHER; Ulrich; (Sundern, DE) ;
ROOSENDAAL; Jean-Paul; (CL 'S-Hertogenbosch, NL) ;
ROMER; Frank; (Finnentrop, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
GEORG MENSHEN GMBH & CO. KG |
Finnentrop |
|
DE |
|
|
Family ID: |
50828852 |
Appl. No.: |
14/784704 |
Filed: |
April 9, 2014 |
PCT Filed: |
April 9, 2014 |
PCT NO: |
PCT/EP2014/000945 |
371 Date: |
October 15, 2015 |
Current U.S.
Class: |
222/81 |
Current CPC
Class: |
B65D 47/106 20130101;
E03F 5/0408 20130101; B65D 41/0457 20130101; E03C 1/292 20130101;
E03F 5/04 20130101; B65D 47/06 20130101; B65D 75/5883 20130101;
B65D 2251/0015 20130101; E03C 1/22 20130101; B65D 2251/0093
20130101; B65D 51/228 20130101; B65D 2401/50 20200501; B65D 41/0435
20130101 |
International
Class: |
B65D 47/10 20060101
B65D047/10; B65D 47/06 20060101 B65D047/06; B65D 41/04 20060101
B65D041/04 |
Foreign Application Data
Date |
Code |
Application Number |
May 24, 2013 |
DE |
102013008861.5 |
Claims
1. A weld-in part made of plastic for installation between the
flexible walls of a container, the part comprising: an upwardly
projecting spout forming an upper pour passage terminating upward
at an upper pour mouth; a cap engaged downward over the mouth of
the spout and upwardly unscrewable therefrom; a base integrally
formed with the spout and forming a lower pour passage joined to
the upper pour passage; a barrier layer in one of the pour
passages; and a projection on the closure cap, extending downward
therefrom into the upper pour passage, and fastened to the barrier
layer so that the barrier layer is at least partially removed as
the closure cap is unscrewed.
2. The weld-in part according to claim 1, wherein the barrier layer
is fastened in the upper pour passage or in the lower pour passage
or in an intermediate region between the upper pour passage and the
lower pour passage.
3. The weld-in part according to claim 1, wherein the barrier layer
is at a spacing from a lower face of the weld-in base that is at
least one fourth of a height of the weld-in base.
4. The weld-in part according to claim 1, wherein the barrier layer
is above an upper face of the weld-in base.
5. The weld-in part according to claim 1, wherein the barrier layer
is above a lower edge face of a lower end of the closure cap.
6. The weld-in part according to claim 1, wherein the barrier layer
is above a bottom edge of a tamper-indicating ring that is fastened
to the lower face of the lower end of the closure cap.
7. The weld-in part according to that claim 1, wherein the barrier
layer is a film made of plastic, metal, or a composite of a plastic
film and metal.
8. The weld-in part according to that claim 1, wherein the barrier
layer is a film composite of polyester, aluminum, and polyethylene
or of polyester, aluminum, and polypropylene.
9. The weld-in part according to that claim 1, wherein the barrier
layer is a composite of a sealing wax layer and/or a plastic layer
having a polyethylene layer or a polypropylene layer.
10. The weld-in part according to that claim 1, wherein the
projection of the closure cap is adhesively bonded or welded to the
barrier layer at a lower end face of the projection of the closure
cap.
11. The weld-in part according to that claim 1, wherein the lower
end of the projection of the closure cap forms a face that is
fastened to the barrier layer.
12. The weld-in part according to that claim 1, wherein the barrier
layer is a film having at least one weakened zone formed by a
predetermined breaking point or predetermined tear line.
13. The weld-in part according to claim 12, wherein the weakened
zone surrounds where the projection and the barrier layer are
fastened to each other.
14. The weld-in part according to claim 1, wherein the lower pour
passage in the weld-in part has a diameter that is larger than a
diameter (D4) of the upper pour passage in the spout, the upper
pour passage in the spout being coaxial to the lower pour
passage.
15. The weld-in part according to claim 12, wherein a transition
from the lower pour passage to the upper pour passage in the spout
is formed by an annular constriction to which an annular periphery
of the barrier layer is welded or adhesively bonded.
16. The weld-in part according to claim 15, wherein the annular
constriction is shaped as a circular ring or frustocone.
17. The weld-in part according to claim 1, wherein the barrier
layer has an integral and downwardly extending cylindrical tube
that lies against an inner wall of the lower pour passage.
18. The weld-in part according to claim 17, wherein the barrier
layer and and tube are produced in advance from a film composite as
a preformed part shaped as a cup.
19. The weld-in part according to claim 18, wherein the cup-shaped
barrier layer is produced from a film composite by thermoshaping or
deep drawing.
20. The weld-in part according to claim 18, wherein the barrier
layer having the shape of a cup is introduced into the weld-in part
by a two-component injection-molding process.
21. The weld-in part according to that claim 1, wherein the base of
the weld-in part is boat-shaped.
Description
[0001] The invention relates to a part made of plastic adapted to
be welded between the flexible walls of a container, particularly a
pouch, comprising a spout integrally formed on top of the weld-in
part and forming an upper pour passage that connects an upper pour
mouth of the spout to a lower pour passage of a lower weld-in base,
a barrier layer in the upper pour passage being opened by a
projection of a closure cap that can be screwed onto the spout.
[0002] DE 297 06 157 and DE 10 2005 011 700 [US 2006/0201967]
describe boat-shaped a weld-in part whose pour spout has a barrier
layer that forms a barrier between the container interior and the
spout pour mouth. In order to open this barrier, a spike-like
projection projects on the closure cap and penetrates the barrier
or barrier layer as the cap is screwed on. Such a design requires
that the closure cap, after having been screwed onto the spout in
order to mount the closure cap, must be screwed on further in order
to be able to penetrate the barrier. For this purpose, a stop must
be created on the weld-in part below the closure cap that prevents
the cap from being screwed on too far and needing to be removed as
soon as the closure is to be opened, that is to say the barrier
layer should be removed. Such a design is complex, complicated in
terms of design, and difficult to operate.
[0003] The object of the invention is to provide a weld-in part
that is simple in terms of design and that allows the barrier layer
to be opened or removed without requiring additional screwing of
the closure cap downward onto the weld-in part.
[0004] According to the invention, this problem is solved in that
the projection of the closure cap extending into the upper pour
passage is fastened to the barrier layer so that the barrier layer
is completely or partially removed as the closure cap is
unscrewed.
[0005] In such a design, the barrier layer is not opened by
screwing the closure cap further downward, but rather by unscrewing
the closure cap, that is to say screwing the closure cap upward,
and therefore the user not only removes the closure cap from the
weld-in part, or rather from the spout of the weld-in part, but
also simultaneously opens the barrier layer only with the
unscrewing motion of the closure cap. Furthermore, with a very
simple design and operation, an ingress of oxygen into the
container is reliably prevented, so long as the closure cap is not
unscrewed, that is to say screwed upward.
[0006] Preferably, it is proposed that the barrier layer is
fastened in the upper pour passage or in the lower pour passage or
in the intermediate region between the upper pour passage and the
pour passage.
[0007] The barrier layer always lies above the lower face of the
weld-in base. The barrier layer:
[0008] is at a spacing from the lower face of the weld-in base that
is at least one fourth of the height of the weld-in base, or
[0009] is above the upper face of the weld-in base, or
[0010] is above the lower face of the lower edge face of the
closure cap, or
[0011] is above the bottom edge of a tamper-indicating ring that is
fastened to the lower face of the lower edge face of the closure
cap.
[0012] Furthermore, the barrier layer can be a film of plastic or
metal.
[0013] Reliable tearing open of the barrier layer is ensured if the
barrier layer, particularly a film, has at least one weakening
zone, particularly a predetermined breaking point or predetermined
tear line. It is also proposed that the projection of the closure
cap is adhesively bonded or welded to the barrier layer at the
lower face of the projection of the closure cap. Furthermore, it is
advantageous if the lower end of the projection of the closure cap
forms a surface fastened to the barrier layer. The weakened zone
can also surround the fastening point between the projection and
the barrier layer.
[0014] A mode that is particularly simple in terms of design and
that facilitates production is achieved if the lower pour passage
located in the weld-in part has a diameter that is larger than the
diameter of the upper pour passage in the spout that is coaxial
with the lower pour passage so that the transition from the lower
pour passage to the upper pour passage in the spout is formed by an
annular constriction to which the outer periphery of the barrier
layer is fastened, particularly welded or adhesively bonded, all
around. The annular constriction can have the shape of a circular
ring or the shape of a frustum of a cone.
[0015] An improvement in the sealing is achieved if the barrier
layer (6) is expanded by means of a cylindrical tube (66)
integrally formed at the bottom, which cylindrical tube lies
against the inner wall of the lower pour passage (2a). In this
case, the production is simplified if the barrier layer (a, 6b)
expanded downward is produced in advance, particularly from a film
composite, as a preformed part having the shape of a cup. The
cup-shaped barrier layer (6, 6b) can be produced from a film
composite by means of thermoshaping or deep drawing. The barrier
layer (6), particularly having the shape of a cup, can also be
introduced into the weld-in part (1) by means of a two-component
injection-molding process.
[0016] Embodiments of the invention are shown in axial sections in
the drawings and are described in more detail below.
[0017] FIG. 1 shows an embodiment having a plate-shaped barrier
layer.
[0018] FIG. 2 shows an embodiment having a cup-shaped barrier
layer.
[0019] The weld-in part 1 made of plastic has a lower boat-shaped
weld-in base 2 that can be welded between flexible walls of an
unillustrated container. An integrally formed cylindrical pour
spout 3 projects centrally and vertically on the upper face of the
weld-in base 2 and forms an upper passage 4 that transitions
downward into a lower pour passage 3a [2a] in the weld-in base 2.
The spout 3, of the upper pour passage 4, and of the lower pour
passage 3a [2a] are centered on an axis A. A lower face 2b of the
weld-in base 2 lies in a plane E extending perpendicular to the
axis A.
[0020] A barrier layer 6 always lies above the lower face 2b of the
weld-in base 2, preferably at a spacing AB above the lower face
that is at least one- to three-fourths of a height H of the weld-in
base 2. Alternatively, the barrier layer 6 lies above an upper face
2c of the weld-in base and below a lower edge face 7a [7b] of the
closure cap 7.
[0021] A diameter D3a [D2a] of the lower pour passage 3a [2a] is
larger than a diameter D4 of the upper pour passage 4 in the spout
3, and therefore there is between the weld-in base 2 and the spout
3 an annular, coaxial, and frustoconical constriction 5 in the
transition region. A circular barrier layer [6] is fastened,
particularly adhesively bonded or welded, to the annular surface of
the constriction 5 at the outer periphery of the barrier layer so
that this barrier layer 6 made of plastic or metal film forms
between the lower pour passage 3a [2a] and the interior of the
spout 3 a barrier that also is a barrier between the interior of
the container and the interior of a closure cap that can be screwed
on or the atmosphere, depending on how tightly a closure cap 7 that
can be screwed onto the spout 3 produces a reliable seal.
[0022] The closure cap 7 is screwed onto an external screwthread 3a
of the spout by an internal screwthread 7a of the closure cap and
is formed with a projection 8 extending into the upper pour passage
4 and so far that a planar lower face of the projection bears
downward on an upper face of the barrier layer 6. The lower face,
or lower end, of the projection 8 is permanently fastened,
particularly adhesively bonded or welded, to the barrier layer
6.
[0023] The barrier layer 6, that is to say the barrier film, has at
least one weakened zone, particularly a predetermined breaking
point or a predetermined tear line that surrounds the fastening
point(s) between the lower end face of the projection 8 and the
barrier layer 6, so that the barrier layer 6 is torn open as the
closure cap 7 is unscrewed as the lower end of the projection 8 is
rotated and pulled upward, thereby leaving the upper pour passage 4
and the lower pour passage 3a [2a] open after the closure cap 7 has
been removed.
[0024] The weakened zone 6a of the barrier layer 6 is preferably
formed by an annular predetermined tear line formed by a laser
beam.
[0025] A tamper-indicating ring, which is not shown and which
indicates whether the closure of the container has been opened
before, is preferably fastened to the lower edge face 7b of the
lower end of the closure cap 7. For this purpose, in an alternative
embodiment, the barrier layer 6 is above the lower edge face of the
tamper-indicating ring. In a further alternative, the barrier layer
6 is at least below the edge face 7a [7b] of the closure cap 7.
[0026] The weld-in part [barrier layer 6] can be made of a film
composite of metal and plastic, preferably polyester, aluminum,
polyethylene or polyester, aluminum, polypropylene, the PE or PP
layer being replaceable with a sealing wax or adhesive.
[0027] In the embodiment according to FIG. 2, the barrier layer 6
is expanded downward by a cylindrical tube 6b that lies against an
inner surface of the lower pour passage 2a and forms the shape of
an upside-down cup together with the upper horizontal barrier
layer. The cup-shaped barrier (6, 6b) is produced from a film
composite by thermoshaping or deep drawing. The barrier layer (6),
particularly in the shape of a cup, can be introduced into the
weld-in part (1) by a two-component injection-molding process.
* * * * *