Title of Invention

PLASTIC-POUR-WELDING PART

Abstract The invention refers to a plastic-lining weld-in part for joining with a plastic-container part, in particular a container part out of foil type plastic material, with circumferential weld-on ribs stretching parallel to each other of a neck area defining a lining passage, on whose external circumference a rib shaped weld flash with fusion face with a less thickness than that of the rib base area in planned, in doing so the weld flash is formed on an externally rounded circumference border of the rib base area and a separating wall is assembled vertical to the weld-on ribs, which projects to both sides of the neck area radially. Both ends of the separating wall are extended over the ends of the rib base area to side wise target plates and the weld flashes take course extended over both sides of the target plates.
Full Text Plastic-Pour-Welding Part
The invention pertains to a plastic-pour-welding part for joining with a plastic container part,
especially a container part made of foil type plastic material, with welding ribs stretching
parallel to one another on the periphery of a neck region defining a pouring passage, on the
outer circumference of which a rib-shaped welding fin with welding edge is foreseen, having
lesser thickness than the rib base region, whereby the welding fin is forged against an outer
rounded circumference edge of the rib base region and a separating wall is arranged vertical to
the welding ribs, which protrude radial on both sides of the neck region.
Such a weld-on part is known from the document EP 0 773 893 B1. In this known design, the
rib-shaped welding tins end at the outer ends of the welding ribs. The ends of the welding
ribs and welding fins thus form a transition-less point that poses problems for welding the
pouch foil tightly. In order to overcome this, we also know how to shape a flag at the outer
ends of the welding ribs, which extends a separation ball that holds the welding ribs at a
distance. These flags of both ends of the welding ribs do indicate and improvement, however
still a relatively long welding time is required at high temperature in order to obtain a safe
sealing. This leads to the problem that on account of high temperature and the welding time
the foil of the pouch gets slightly deformed.
It is the task of this invention to improve upon the plastic-pour-welding part of the type
described above in such a way. that with high tightness a low temperature and welding time is
required and the plastic container part is not deformed after welding.
This task is fulfilled by the invention, in that both ends of the separating walls arc extended
beyond the ends of the rib base region as side flags, whereby the welding fins run extended
over both sides of the flags and whereby the side flags instead of an upper and lower outer
corner respectively have a recess. Furthermore, one can achieve faster and safe welding at
lower temperatures and ensure higher degree of tightness. Also, as a rule, welding has to be
done only one single time instead of two to four times as done before. The upper and lower
recess on each flag prevents that during welding material of the flag unnecessarily gets into
the pouch inner side or between the foils, and thus a smooth outflow to the pouch is ensured.


In a plastic-pour-welding part for joining with a plastic container part, especially a container
part made of foil type plastic material like a pouch, with flat weld-on ribs stretching parallel
to one another along the circumference of neck region dellning a pouring passage, on whose
outer circumference a rib-shaped welding fin with lesser thickness than that of the welding
ribs is foreseen, whereby the welding fin is shaped against an outer rounded circumference
edge of the welding fin and a separating wall is arranged vertical to the welding ribs that
protrudes radial on both sides of the neck region, it is suggested that both ends of the
separating walls are extended as side flags beyond the ends of the rib base region, whereby
the welding fins run extended beyond both sides of the flags and whereby the side flags,
instead of an upper and lower outer corner, respectively have a recess. Liven here the upper
and lower recess on each flag prevents that during welding material of the flag gets into the
pouch inner side or between the foils, and thus a smooth outflow to the pouch is ensured.
A particularly shaped and continuous welding joint is achieved if the welding fin at the outer
end of the rib based regions runs like an art without any bend towards the flag. This is also
improved if the welding fin on the flag gets tapered in its height.
A safe and continuous welding is also achieved if the welding fin gets reduced in its height
from the end of the rib base regions towards the centre of the rib base region. For this it is
also suggested that the welding fin in the central region of the weld-on part has the height
zero. An optimum welding is also achieved if at least four rib base regions arc arranged and
only the central rib base regions have welding fins. It is also advantageous if the flags
protrude only in the region of those rib base regions that have the welding fins.
A safe fixing with high degree of tightness is achieved if the height of the side flags is lesser
than the height of the faces. The flag should also be arranged centric to the faces.
It is suggested that one to three welding fins run over the flags. The welding fins could also
have a bulged, pointed, trapezium-shaped or rectangular cross-section.
In order to compensate softening of the side walls during welding it is suggested that welding
fins lying further below have a larger cross-section and/or height than the welding fins
arranged above. Alternatively or additionally, it is suggested that it increases in its width in


especially the cross-section running through the axis of the neck region or support. For this,
the faces can be exhibited downwards and outwards.
In order to join the walls of the container, particularly the pouch, it is suggested that the
surfaces have parallel welding 11ns in their upper region to the neck region or stud axis.
A design example of the invention is shown in perspective in the drawing and is described in
details below. The following are shown:
Fig. 1 A perspective view of a first design;
Fig.2 A first side-view of a second design;
Fig.3 An enlarged cut-out from fig. 2;
Fig.4 A second side-view of the second design; and
Fig.5 A vertical axial cross-section through the second design.
A boat-shaped plastic-pour-welding part 1 is formed as a single piece from a shape-stable
plastic and in the first design example has four floors parallel to one another and mainly
diamond-shape that form equal distances from one another and are referred to below as
""welding ribs 2". Each of these flat welding ribs 2 consists of a rib base region on whose
outer edge welding fins 3 arc moulded. These welding fins 3 thus protrude against the
rounded face-shape sides olThe rib base regions and have a lesser thickness than these. The
rib-shaped welding fins 3 however do not run over the entire length of the side edges or
circumference edges 4 of the welding ribs 2, but in the central region on which a central
continuous opening runs through all welding ribs 2; the side edge and hence the outer edge of
the welding ribs is rounded and free from any welding fins.
The central continuous opening of the welding part 1 has the task of supporting the neck
region or stud 8 of a pouring passage of a plastic pour out that is not shown in fig. 1.
The welding ribs 2 arc held against one another by a separating wall 5 that would
diametrically run through the opening if the opening had not been kept free. The separating
wall 5 thus lies on a radius of the opening. Here the separating wall 5 ends in the region of
the uppermost and the lowermost welding ribs with their outer ends. In the region of the two


central welding ribs a flag 6 is respectively formed against the separating wall 5 on both sides
on the same plane, which thus extends the welding parts 1 on both sides.
The rib-shaped welding fins 3 of both central welding ribs 2 are also extended and run over
both sides of the (lags 6. in order to run-off at their ends.
In the region of the connecting point of the flag 6 to the separating wall 5 the welding fin 3
runs in an arch shape, i.e. it docs not form a bend there but rather fills up the bend between
the side edge 4 of the welding rib 2 and the flag 6.
The height 11 of the welding fins 3 gets altered over its path, whereby the height is seen in a
direction parallel to the surfaces of the welding ribs 2. From the outer ends of the rib base
regions 2 to their centre the height decreases and there is no welding fin on the side edge 4 in
the central region of the rib base region: rather the height has got reduced by then to zero.
Both the flags 6 arc arrange only in the region of the two central welding ribs 2. In the region
of the upper and lower welding rib there arc recesses 6a.
In the second design example shown in fig. 2 to 5, the boat-shaped welding part, instead of
the welding ribs 2 or even in addition to these, has outer walis or faces 7 that form the side
walls of the boat shape and are mainly set vertical. In this design example also the neck
region or stud 8 forming the pour out passage and pour out opening is shown, on whose outer
thread a locking cap with its inner thread can be screwed on.
The two outer convex bent faces 7 thus include the pour out passage and are fixed to one
another against both their side ends or moulded against one another as a single piece from
plastic. At both ends of the faces 7 extensions arc formed in the shape of flags 6 whose height
is only one-fourth to one-third of" the height of the faces 7, so that here too in the first design
there arc free recesses 6a above and below each flag 6.
On both side faces 7 welding fins 3 run over the entire length of the faces and parallel to the
face upper edge and lower edge. The rib-shaped welding fins 3 run beyond both ends of the
faces 7 further on to the flags 6. in order to run off there reducing in height, as already
mentioned in the first design form.


The flags 6 are thus arranged centric to the faces 7 and in the design example two welding
fins 3 run over the flags. Instead of that however, even one or three welding fins can be
arranged parallel to one another. The cross-section of the welding fins can be semi-circular,
pointed trapezium-shaped or rectangular.
In order to be able to safely fastened the walls of the container, particularly the foil walls of a
pouch, on the boat-shaped region of the welding part and while considering that when the on
container walls press on to the welding part the walls give way, it is advantageous if welding
fins lying further below have a larger cross-section and/or height 11 than the welding fins
arranged above them, so that the lower welding fins or the lower welding fin of the pouch
wall come towards so to speak and compensates any softening or pressing in. Instead of that
or even in addition to that, the walls 7 can be facing outwards towards the bottom, so that the
cross-section of the boat shape increases downwards, as shown in fig. 5.
A safe fixing of the upper edge of the container wall or the container foil is achieved, in that
above the uppermost welding fin 3 vertical welding fins 9 are arranged on the faces 7
protruding outwards that can reach up to the upper edge of the face 7.
The following are achieved:
Reduction of welding temperature from 220°C to 195°C and thus prevention of danger
of de-lamination of the foil;
Reduction in welding time from 1 sec. to 0.5 sec;
Concentration of the welding zone to 2 to 3 ribs;
Only 1 welding process (today up to 4);
Better optical appearance in the welding region after welding, nicer welding zone on
the ready pouch.

WE CALIM:
1. Plastic -pour-welding part (1) for joining with a plastic container
part, especially a container part made of foil-type of plastic
material like a pouch, with flat welding ribs (2) stretching
parallel to one another on the periphery of a neck region (stud)
defining a pour passage, on the outer circumference of which a
rib-shaped welding fin (3) with welding edge is foreseen having
lesser thickness than the rib base region, whereby the welding
fin is forged against an outer rounded circumference edge of the
rib base region and a separating wall (5) is arranged vertical to
the welding ribs, which protrude radial on both sides of the
neck region,
Characterized in that
both ends of the separating region are extended over the ends of
the rib base region as side flags (6), and the welding fins (3) run
extended over both sides of the flags, and the side flags (6),
instead of an upper and lower outer corner respectively have a
recess (6a).
2. Plastic-pour-welding part (1) for joining with a plastic container
part, especially a container part made of foil-type made of
plastic material like a pouch, with a neck region (stud) defining
a pour out passage, to whose lower region two bulging convex
faces (7) are arranged outwards against one another and are
specially moulded, on whose outer side at least one rib-shaped
welding fin (3) is foreseen, Characterized in that
both ends of the faces (7) are extended as sideways protruding
flags, and the welding fins (3)

run extended over both sides of the flags and the side flags (6)
instead of an upper and lower outer corner have a recesses (6a).
3. Welding part as per claim 1, wherein the welding fin (3) runs
bend-free to the flag (6) in an arc shape at the outer end of the
welding ribs (2) or the face (7).
4. Welding part as per claim 1 or 2, wherein the welding fin (3)
runs off on the flag (6) reducing in its height (H).
5. Welding part as per one of the previous claims, wherein the
welding fin (3) reduces in its height from the end of the welding
ribs (2) or the face (7) towards the centre of the welding rib/face
(7).
6. Welding part as per claim 4, wherein the welding fin (3) has a
height (H) zero in the central region of the welding part (I).
7. Welding part as per one of the preceding claims 2 to 4, wherein
the height of the welding fin (3) is the same over its length.
8. Welding part as per one of the previous claims, wherein at least
four welding ribs (2) are arranged and only the central welding
ribs have welding fins (3).
9. Welding part as per one of the previous claims, wherein the
flags (6) protrude only in the region of those welding ribs (2)
that have welding fins (3).
10. Welding part as per one of the claims 2 to 9, wherein the height
(F) of the side flags (6) is lesser than the height (9) of the faces
(7).
11. Welding part as per one of the claims 2 to 10, wherein the flags
(6) are arranged centric to the faces (7).
12. Welding part as per one of the previous claims, wherein one to
three welding fins (3), run over the flags (6).

13. Welding part as per one of the previous claims, wherein the
welding fins (3) have a bulged, pointed, trapezium-shaped or
rectangular cross-section.
14. Welding part as per one of the previous claims, wherein welding
fin (3) lying further down have a larger cross-section and/or
height (11) than the welding fins (3) arranged above them.
15. Welding part as per one of the claims 2 to 14, wherein it
increases in its width, especially in its cross-section running
downwards through the neck region axis or stud axis.
16. Welding part as per claim 15, wherein the faces (7) downwards
are facing outwards.
17. Welding part as per one of the claims 2 to 9, wherein the faces
(7) in their upper region have welding fins (9) parallel to the
neck region axis or stud axis.


The invention refers to a plastic-lining weld-in part for joining with a plastic-container part,
in particular a container part out of foil type plastic material, with circumferential weld-on
ribs stretching parallel to each other of a neck area defining a lining passage, on whose
external circumference a rib shaped weld flash with fusion face with a less thickness than that
of the rib base area in planned, in doing so the weld flash is formed on an externally rounded
circumference border of the rib base area and a separating wall is assembled vertical to the
weld-on ribs, which projects to both sides of the neck area radially. Both ends of the
separating wall are extended over the ends of the rib base area to side wise target plates and
the weld flashes take course extended over both sides of the target plates.

Documents:

01172-kolnp-2007-abstract.pdf

01172-kolnp-2007-claims.pdf

01172-kolnp-2007-correspondence others 1.1.pdf

01172-kolnp-2007-correspondence others 1.2.pdf

01172-kolnp-2007-correspondence others 1.3.pdf

01172-kolnp-2007-correspondence others.pdf

01172-kolnp-2007-description complete.pdf

01172-kolnp-2007-drawings.pdf

01172-kolnp-2007-form 1.pdf

01172-kolnp-2007-form 2.pdf

01172-kolnp-2007-form 26.pdf

01172-kolnp-2007-form 3.pdf

01172-kolnp-2007-form 5.pdf

01172-kolnp-2007-international publication.pdf

01172-kolnp-2007-international search report.pdf

01172-kolnp-2007-pct request form.pdf

01172-kolnp-2007-priority document 1.1.pdf

01172-kolnp-2007-priority document.pdf

1172-kolnp-2007-correspondence.pdf

1172-kolnp-2007-examination report.pdf

1172-kolnp-2007-form 18.pdf

1172-kolnp-2007-form 26.pdf

1172-kolnp-2007-form 3.pdf

1172-kolnp-2007-form 5.pdf

1172-kolnp-2007-granted-abstract.pdf

1172-kolnp-2007-granted-claims.pdf

1172-kolnp-2007-granted-description (complete).pdf

1172-kolnp-2007-granted-drawings.pdf

1172-kolnp-2007-granted-form 1.pdf

1172-kolnp-2007-granted-form 2.pdf

1172-kolnp-2007-granted-specification.pdf

1172-kolnp-2007-others.pdf

1172-KOLNP-2007-PETITION UNDER RULE 137.pdf

1172-kolnp-2007-reply to examination report.pdf

abstract-01172-kolnp-2007.jpg


Patent Number 249080
Indian Patent Application Number 1172/KOLNP/2007
PG Journal Number 39/2011
Publication Date 30-Sep-2011
Grant Date 28-Sep-2011
Date of Filing 04-Apr-2007
Name of Patentee GEORG MENSHEN GMBH & CO. KG.
Applicant Address INDUSTRIESTRASSE 26, 57413 FINNENTROP
Inventors:
# Inventor's Name Inventor's Address
1 DETLEF KILDEBRAND AM STUBEL 7 58840 PLETTENBERG
2 WALTER SCHULTE AM RENNERT 16, 57413 FINNENTROP
PCT International Classification Number B65D 33/38
PCT International Application Number PCT/EP2005/011436
PCT International Filing date 2005-10-25
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 102004053857.3 2004-11-04 Germany
2 102005006871.5 2005-02-14 Germany