Source: http://freshpatents.com/Packaging-bag-with-fastener-and-method-of-producing-the-same-dt20080221ptan20080044115.php
Timestamp: 2013-05-25 15:48:46
Document Index: 208523728

Matched Legal Cases: ['art, 26', 'art, 28', 'arts 25', 'arts 27', 'arts 25', 'arts 25', 'art\n25', 'art 27', 'art 25', 'art 25', 'art 27', 'art 27', 'art 25', 'art 25', 'art 27', 'art 25', 'art 27', 'art 30', 'art 35', 'art 35', 'arts 30', 'art 30', 'art 35', 'art 25', 'art 27', 'art 25', 'arts 25', 'arts 25', 'art 25', 'art 27']

Packaging Bag With Fastener And Method Of Producing The Same n/a views for this patent on FreshPatents.comupdated 05/24/13
Patents sorted by company.	02/21/08 | Class 383 Monitor | RSS | Browse: Prev - Next Packaging bag with fastener and method of producing the same Abstract: There is provided a packaging bag capable of easily taking out an inner content of a desired amount from a packaging bag. The packaging bag provided with a fastener forms a packaging bag 1 by connecting a bag body 2 to a spout unit 3 as an independent member. The spout unit 3 is composed of opposing wall surface portions 11 and a fastener provided on inner surfaces of these wall surface portions 11, which are integrally formed through an injection molding process. The spout unit 3 includes a connection opening 15 for connecting one side end to the bag body 2 with the fastener 13 being boundary thereof and a closed portion 16 forming the other side end as the end edge of the packaging bag. A seal-opening portion 20 to be torn so as to separate the spout unit is formed to a portion between the closed portion 16 and the fastener 13. ...
Agent: Young & Thompson - Arlington, VA, USInventors: Tooru Ichikawa, Kou Go, Kazuhiro UmenakaUSPTO Applicaton #: #20080044115 - Class: 383204000 (USPTO) - 02/21/08 - Class 383 Related Patent Categories: Flexible Bags, Bag Having Means To Facilitate Opening It By Severing Bag Material Or Bag Part (e.g., Tearing, Cutting, Piercing, Etc.), Including Means For Reclosing The Bag, Including A Bag Portion Which Is Completely Separated From The Bag During Tearing (e.g., Tear Strip)The Patent Description & Claims data below is from USPTO Patent Application 20080044115, Packaging bag with fastener and method of producing the same.
[0001] The present invention relates to a packaging bag with fastener for
freely opening and closing a spout of the bag and a method of
manufacturing such bag.
[0002] Conventionally, there is provided a packaging bag provided with a
fastener at its spout. According to such packaging bag provided with the
fastener, the spout can be again closed and sealed after once opened, and
thereafter, the spout can be repeatedly opened or closed by opening or
closing the fastener. Many prior art publications have disclosed for such
packaging bag provided with the fastener.
[0003] Among these packaging bags provided with the fasteners, there is a
packaging bag, such as disclosed in Patent Publication 1, for example, in
which an upper corner portion of the packaging bag functions as a spout
for easily taking out an inner content. In the packaging bag disclosed in
this Patent Publication 1, the upper corner portion is obliquely opened
to form the spout, and in this packaging bag, a fastener is provided
inside the spout to be opened so that the spout, which was once opened,
is again closed and sealed.
[0004] This fastener includes a male fastener part and a female fastener
part, and base portions of these parts are bonded to an inner surface of
the packaging bag.
[0005] Patent Publication 1: Japanese Patent Unexamined Application
Publication No. 2002-284195
[0006] However, according to the packaging bag disclosed in the Patent
Publication 1, it is difficult to maintain an opened state of the spout
at the time of taking out the inner content after opening the seal, and
it is necessary to intentionally open the spout with a desired opened
size, involving a troublesome operation. Therefore, it was difficult to
take out the inner content by a desired amount.
[0007] In addition, in order to attach the fastener to the corner portion
of the packaging bag, it is necessary to attach the same with no
positional shifting of the fastener, which will involve cost increasing
for attaching the fastener with high accuracy.
[0008] Then, an object of the present invention is to provide a packaging
bag with a fastener capable of extremely easily maintaining an opened
state of a spout of the packaging bag and being manufactured with high
[0009] In order to solve the above problem, the present invention provides
a packaging bag with a fastener, comprising: a bag body formed with a
mount opening; and a spout unit formed of a material different from the
bag body and connected to the mouth opening so as to serve as a spout for
taking out an inner content contained in the bag body, wherein the spout
unit includes wall surface portions composed of a pair of opposing
surfaces whose end edges are connected and a fastener composed of a male
fastener part provided on an inner surface of one of the paired surfaces
and a female fastener part provided on an inner surface of another one of
the paired surfaces, the wall surface portions and the fastener being
integrally formed through an injection molding process, the spout unit
has a bottom side end portion constituting a connection opening to be
connected to the mount opening of the bag body and a top side end portion
constituting an end closed portion, with the fastener being boundary
thereof, and a seal-opening portion is formed to the wall surface
portions between the closed portion and the fastener for tearing the wall
surface portions so that the spout unit is separated into the closed
portion side and the fastener side.
[0010] Furthermore, in the present invention, in the above packaging bag
with the fastener, the connected end edges of the wall surface portions
constitute end folded line portions formed by bending the wall surface
portions, the wall surface portions are formed such that the central
folded line portions bent together with male and female fastener parts
formed to the respective wall surface portions are formed in directions
perpendicular to an extending direction of the male and female fastener
parts at central portions thereof, and the respective wall surface
portions are bent at the central folded line portions so that the
respective central folded line portions protrude in directions oppositely
[0011] Furthermore, in the present invention, in the packaging bag with
the fastener, the spout unit is formed to be tapered toward the end
closed portion of the wall surface portions so that the end folded line
portion and the central folded line portions constitute side lines of a
quadrangular pyramid shape.
[0012] Furthermore, in the present invention, in the packaging bag with
the fastener, the male and female fastener parts are provided such that
central side portions thereof from both end portions in the axial
directions thereof are positioned either one side of the closed portion
side or connection opening side of the wall surface portions, and the
bent portions of the male and female fastener parts are positioned on the
central folded line portions.
[0013] Furthermore, in the present invention, in the packaging bag with
the fastener, the seal-opening portion is formed to be linear so as to
connect both side portions of the spout unit, and a tearing starting
portion is formed to at least one of the side portions of the spout unit
so as to be positioned on a same straight line of the seal-opening
portion and strength of the side portion of the spout unit is locally
[0014] Furthermore, in the present invention, in the packaging bag with
the fastener, the spout unit is formed with a holding hole for holding
the spout unit to a constant attitude by means of a holding member at a
time of connecting the spout unit to the bag body, and the holding hole
is formed between the seal-opening portion and the end closed portion.
[0015] According to the present invention, the following manufacturing
method for manufacturing the above-mentioned packaging bag with the
fastener is adopted.
[0016] That is, there is provided a method of manufacturing a packaging
bag with a fastener comprising: a bag body forming step for forming a bag
body into which an inner content is accommodated; a spout unit forming
step for forming a spout unit to be connected to the bag body so as to
serve a spout for pouring out the inner content; and a connecting step
for connecting the spout unit to the bag body, wherein, in the bag body
forming step, a mount opening to which the spout unit is connected is
formed to the bag body, and wherein, in the spout unit forming step, wall
surface portions and a fastener are integrally formed by means of
injection molding, in which the wall surface portions are formed by
connecting both end edges of opposing surfaces, a fastener is composed of
a male fastener part formed to an inner surface of one of the wall
surface portions and a female fastener part formed to an inner surface of
another one of the wall surface portions so as to be engageable with the
male fastener part, and the wall surface portions include one side end
portions constituting a connection opening portion to be connected to the
mount opening of the bag body and another side end portion constituting
an end closed portion of the end edge of the packaging bag.
[0017] Furthermore, in the present invention, in the packaging bag
manufacturing method mentioned above, the spout unit forming step
includes an injection molding step for injecting resin material into a
mold including a cavity, having a quadrangular-pyramid shape, composed of
four spaces including one pair of adjacent spaces in which the male
fastener part is formed and another one pair of adjacent spaces in which
the female fastener part is formed, and among four side lines forming the
cavity, the side lines oppositely positioned and forming boundaries
between the one paired spaces and another one paired spaces connect the
respective wall surface portions of the spout unit and constitute end
folded line portions to form the wall surface portions to be foldable,
and on the other hand, the side lines oppositely positioned and forming a
boundary between adjacent spaces of the respective spaces and constitute
central folded line portions positioned to central portions of the wall
[0018] Furthermore, in the present invention, in the packaging bag
manufacturing method mentioned above, the cavity formed by the mold is
provided with a portion for forming a seal-opening portion for separating
the spout unit into the fastener portion and the end closed portion
between a portion to which the male fastener part and female fastener
part are formed and the top portion of the cavity, thereby forming the
seal-opening portion in the spout unit forming step.
[0019] Furthermore, in the present invention, in the packaging bag
manufacturing method mentioned above, a holding hole is formed between
the seal-opening portion and the closed portion of the spout unit, and in
the connecting step, a parts feeder fed to means for connecting the spout
unit to the bag body so as to constantly hold an attitude of the spout
[0020] According to the present invention, when the inner content is
poured out from the packaging bag with the fastener, the shape of the
seal-opening portion can be maintained in the opened state. Because of
this reason, at the inner content pouring time, it is inhibited that the
wall surface portions of the spout unit obstruct the pouring operation,
and the predetermined amount of the inner content can be easily taken
put. In addition, since there is provided the fastener, the remaining
inner content can be surely stored as in the prior art.
[0021] FIG. 1 is a front view of a standing pouch according to one
[0022] FIG. 2 is a plan view of a spout unit used for the standing pouch
[0023] FIG. 3 is a perspective view of the spout unit shown in FIG. 2.
[0024] FIG. 4 is a view showing a shape of an insertion hole for inserting
a parts feeder into the spout.
[0025] FIG. 5 is a view showing a fastener provided with a male fastener
part and a female fastener part which are engaged together.
[0026] FIG. 6 is a view showing the fastener provided with a male fastener
part and a female fastener part which are separated.
[0027] FIG. 7 is a view showing a fastener according to an embodiment
different from that shown in FIG. 5 or 6.
[0028] FIG. 8 is an elevational sectional view of a mold.
[0029] FIG. 9 is a cross sectional view of the mold.
[0030] FIG. 10 is an enlarged view of a fastener forming portion.
[0031] FIG. 11 is a perspective view of a spout unit into which a parts
feeder is inserted.
[0032] FIG. 12 is a view showing a using mode of the standing pouch shown
[0033] FIG. 13 is a view showing a state that a seal-opening portion is
opened and an inner content is taken out from the standing pouch.
[0034] FIG. 14 is a plan view showing a spout unit according to another
[0035] FIG. 15 is a front view, partially cut away, of a standing pouch
according to an embodiment different from that of FIG. 1.
[0036] 1, 100 - - - standing pouch (packaging bag provided with fastener),
2, 102 - - - bag body, 3, 70, 102 - - - spout unit, 9, 111 - - - mount
opening portion, 11, 71, 121 - - - wall surface, 13, 13A, 73, 123 - - -
fastener, 14, 74, 124 - - - bent portion, 15, 76, 126 - - - connection
opening portion, 16, 75, 126 - - - closed portion, 17, 77, 127 - - - end
folded line portion, 18, 78, 128 - - - central folded line portion, 20,
79, 130 - - - seal-opening portion, 21, 81, 132 - - - insertion hole
(holding hole), 25, 30 - - - male fastener part, 26, 31 - - - engaging
pawl, 27, 35 - - - female fastener part, 28, 36 - - - engaging wall, 40 -
- - mold, 43 - - - cavity
[0037] Hereunder, an embodying mode of the present invention will be
[0038] FIG. 1 is a front view of a standing pouch 1 as a packaging bag
with a fastener according to one embodiment of the present invention.
This standing pouch 1 includes a bag body 2 and a spout unit 3 connected
to the bag body 2 and adapted to take out an inner content. The bag body
2 is formed from a pair of opposing flat portions 2a and a bottom portion
4 closing the bottom portion. The flat portions 2a are formed into a
tubular shape by heat-sealing both side edges 6 thereof. The bottom
portion 4 is folded into V-shape and a folded line 5 formed at its
central portion directed upward of the standing pouch 1. In addition, the
lower end edges 7 of the paired flat portions 2a and the peripheral edge
8 of the bottom portion 4 are heat-sealed to thereby provide an
elliptical shape when widening the bottom portion.
[0039] The bag body 2 is formed from a laminated film of the structure
[0040] ON#15/DL/L-LDPE#50-100
[0041] ON#25/DL/CPP#50-100
[0042] PET#12/Print/DL/ON#15/DL/L-LDPE#50-100
[0043] PET#12/Print/DL/ON#15/DL/CPP#50-100
[0044] PET#12/Print/DL/AL6-12.mu./DL/ON#15/DL/L-LDPE#50-100
[0045] PET#12/Print/DL/ON#15/DL/AL6-12.mu./DL/CPP#50-100
[0046] wherein the respective symbols are:
[0047] ON: biaxial drawing nylon
[0048] DL: dry laminate
[0049] L-LDPE: linear low density polyethylene
[0050] PET: polyethylene telephthalate
[0051] CPP: non-oriented polypropylene
[0052] #: .mu.m, for example, #15 means 15 .mu.m
[0053] On the other hand, the spout unit 3 is connected to a mount opening
(opening for mounting) 9 formed to a corner portion of the bag body 2 at
its upper portion. At the upper edge 10 of the bag body 2, the opposing
flat portions 2a are closed and sealed through a heat-seal process, but
at one corner portion of the upper portion, the mount opening 9 to which
the spout unit 3 is mounted is formed. The spout unit 3 is connected to
this mount opening 9 and attached by being heat-sealed to the bag body 2.
[0054] FIGS. 2 to 7 shows the details of the spout unit 3.
[0055] As shown in FIGS. 2 and 3, the spout unit 3 has a pyramid-shaped
outer appearance, and is provided with wall surface portion 11
constituting one portion of a circumferential surface of the standing
pouch 1 and a fastener 13 provided on the inner surface of the wall
surface portion 11. The entire structure of spout unit 3 including these
wall surface portion 11 and the fastener 13 is integrally formed through
an injection molding process as mentioned hereinafter.
[0056] The pyramid-shaped wall surface portion 11 has a top end side
closed portion 16 and a bottom side opening 15 to be connected to the bag
body 2. The pyramid-shaped four surfaces of the wall surface portion 11
are foldable such that two pairs of the adjacent surfaces 12 are formed.
When folded, portions positioned at both side edges are end folded
(folding) lines 17 constituting side lines positioned on one diagonal
line. Seal portions 19 extending outward of the spout unit 3 are formed
to the outsides of the end folded lines 17. On the other hand, the
central portion of the wall surface portion 11 when folded is a central
folded (folding) line 18 constituting a side line positioned on the other
diagonal line. This central folded line 18 is formed by recessing the
inner surface of the wall surface portion 11 for the easy opening of the
bag body as mentioned hereinafter.
[0057] Furthermore, as shown in FIGS. 1 to 3, the connection opening (15)
side of the wall surface portion 11 projects so as to be slightly tapered
from the end folded line (17) side toward the central folded line (18)
[0058] Further, on the inner surface of the wall surface portion 11, male
fastener parts 25 of the fasteners 13 are provided to the one paired
surfaces 12 with the seal portions 19 being boundary, and female fastener
parts 27 are provided to the other paired surfaces 12.
[0059] The male and female fastener parts 25 and 27 are provides such that
the centers thereof in the axial directions are coincident with the
central folded lines 18 positioned at the centers of the paired surfaces
12. These male and female fastener parts 25 and 27 are positioned so as
to be parallel with the end edges of the bottom portion of the wall
surface portion 11, and the center side from both the ends in the axial
direction is positioned on the connection opening (15) side so as to form
a bent portion 14 at that central portion.
[0060] The spout unit 3 is formed with a seal-opening portion 20 for
opening the spout unit 3 by tearing it at a portion between the top
closed portion 16 of the pyramid-shaped wall surface portion 11 and the
fastener 13 so as to separate the torn portion from the spout unit 3.
[0061] This seal-opening portion 20 is perpendicular to the central folded
line 18 so as to connect both the end folded lines 17 positioned at both
side portions of the spout unit 3. Further, the seal portion 19 is formed
with a cutout or notch 24 at a position on the same line as the
seal-opening portion 20 for easily opening the seal-opening portion 20.
Furthermore, in this embodiment, although the cutout 24 is formed as
tearing seal-opening starting portion, the present invention is not
limited thereto, and for example, the portion on the same line as the
seal-opening portion 20 may be formed thinner or as a rough surface
portion composed of an aggregation of fine perforations.
[0062] Each of the wall surface portions 11 is formed with an insertion
hole into which a parts feeder 60 is inserted at a position on the side
of the closed portion 16 from the seal-opening portion 20. This insertion
hole 21 serves to hold the spout unit 3 in a predetermined direction at a
time when the spout unit 3 is grasped by an arm of a supply robot in a
step of connecting the spout unit 3 to the bag body 2. For this reason, a
plurality of insertion holes, such as two or three holes 21 may be formed
so as to surely determine the direction. However, the formation of only
one insertion hole 21 is not inhibited. Furthermore, the insertion hole
21 may have a general rectangular shape or rhombus, but if the insertion
hole is formed so as to provide a circular upper portion 22 and a lower
portion 23 finely tapered downward to thereby ensure the vertical and
[0063] FIGS. 5 and 6 show cross sectional views of the male fastener part
25 and the female fastener part 27, in which FIG. 5 shows a state that
both the fastener parts are engaged with each other and FIG. 6 shows a
state that both the fastener parts are separated.
[0064] The male fastener part 25 of the fastener 13 is composed of a pair
of engaging pawls 26 each having a rectangular shape in section and
projecting from the inner surface of the wall surface portion 11 so as to
be perpendicular thereto. These paired engaging pawls 26 are formed with
a constant interval therebetween along the entire length of the male
fastener part 25. On the other hand, the female fastener part 27 of the
fastener 13 is composed of a pair of engaging wall sections 28 each
having a rectangular shape in section and projecting from the inner
surface of the wall surface portion 11 so as to be perpendicular thereto.
These paired engaging wall sections 28 are formed with a constant
interval therebetween, along the entire length of the female fastener
part 27, corresponding to the dimension between the outer surfaces of the
engaging pawls 26 of the male fastener part 25.
[0065] In the fastener 13, the male fastener part 25 and the female
fastener part 27 are engaged in a manner such that the engaging pawls 26
of the male fastener part 25 are inserted into the engaging wall sections
28 of the female fastener part 27, thereby the fastener 13 being closed.
Accordingly, even after the seal-opening portion 20 is torn and cut away
to open the packaging bag, the packaging bag can be again closed and
[0066] Further, a fastener 13A shown in FIG. 7 may be utilized.
[0067] Referring to FIG. 7, the male fastener part 30 is formed from an
engaging pawl 31 in form of one row of thread projecting from the inner
surface of the wall surface portion 11. The engaging pawl 31 has a root
portion 32 having a flat plate shape perpendicular to the wall surface
portion 11 and has a front end portion 33 having substantially circular
shape in section. On the other hand, a female fastener part 35 is
composed of a pair of opposing engaging wall sections 36 so as to project
from the inner surface of the wall surface portion 11. The engaging wall
sections 36 constituting the female fastener part 35 have a circular-arc
shape in section having a partially cut-away portion. In such fastener
13A, as shown in FIG. 7, both the male and female fastener parts 30 and
35 are engaged in a manner such that the front end portion 33 of the
engaging pawl 31 constituting the male fastener part 30 is fitted into
the engaging wall sections 36 constituting the female fastener part 35.
[0068] Incidentally, although the spout unit 3 may be formed by the
injection molding by utilizing a general resin material, it is preferred
to use a shape memory resin. As explained herein after, by using the
shape memory resin, it becomes possible to easily maintain the opened
state of the seal-opening portion 20 of the spout unit 3. As such shape
memory resin, there may be used, for example, polyester, polyurethane,
styrene-butadiene, polynolbornene, transpolyisoprene, or like.
[0069] An example of a mold 40 utilized for the manufacture of the spout
unit 3 mentioned hereinabove is shown in FIGS. 8 to 10.
[0070] The mold 40 is composed of an outside section 41 and an inside
section 42 between which a pyramid-shaped thin cavity 43 is formed. In
FIG. 8, oblique side portions 44 and 45 positioned above and below the
cavity 43 correspond to the positions forming the end folded lines 17,
and on the other hand, a center line 46 extending horizontally at the
central portion of the inside section 42 corresponds to the portion
forming the central folded line 18. Portions 49 extending outward from
the upper and lower oblique portions 44 and 45 form seal forming portions
49 forming the seal portion 19 of the spout unit 3. Furthermore, in FIG.
8, a portion constituting the top portion of the cavity 43 forms a resin
pouring port 47, and a bottom side portion of the cavity 43 is a portion
forming the connection opening 15 of the spout unit 3. Lines 48
connecting the bottom ends of the cavity 43 and the center line 46 are
tapered at the central position thereof as shown in FIG. 8.
[0071] Further, in a space 50 forming the wall surface portion 11 composed
of a pair of one side surfaces 12, a male fastener part forming portion
51 constituting the male fastener part 25 is formed, and on the other
hand, in a space 51 forming the wall surface portion 11 composed of
another pair of one side surfaces 12, a female fastener part forming
portion 53 constituting the female fastener part 27 is formed as shown in
FIG. 9. These male fastener part forming portion 51 and the female
fastener part forming portion 53 are positioned so as to be parallel with
the bottom side lines 48 forming the connection opening 15, and its
central side is positioned to the bottom side than the upper and lower
ends thereof as shown in FIG. 8.
[0072] Further, the details of the male fastener part forming portion 51
and the female fastener part forming portion 53 are shown in FIG. 10.
[0073] With reference to FIG. 10, the male fastener part forming portion
51 is formed by arranging, in parallel, two spaces each having a
rectangular shape in section, at the inside section 42 constituting the
mold 40. These rectangular-shaped spaces are engaging pawl forming
portions 55 forming the engaging pawls 26 of the male fastener part 25.
The engaging pawl forming portion 55 is formed, as is apparent from FIG.
10, so as to be integral with the space 50 forming the wall surface
[0074] On the other hand, in the inside section 42 of the mold, the female
fastener part forming portion 53 is formed at a portion opposite to the
center line. In the female fastener part forming portion 53, likely, two
spaces each having a rectangular shape in section are formed in parallel
with each other. These spaces are engaging pawl forming portions 56 for
forming the engaging wall sections 28. These engaging pawl forming
portions 56 are also formed to be integral with the space 52 forming the
wall surface portion 11.
[0075] The wall surface portions 11 and the fastener 13 of the spout unit
3 are formed integrally by injecting the resin in the mold 40 of the
structure mentioned above.
[0076] The standing pouch of the structure mentioned above will be
manufactured through the following steps.
[0077] Referring now back to FIG. 1, the bag body 2 is formed by utilizing
the flat portions 2a and the V-shaped bottom portion 4. The bottom
portion 4 is sandwiched between two flat portions 2a with the folded line
being directed upward of the standing pouch 1. At the side portions of
the bag body 2, the side edges 6 of the flat portions 2a are heat-sealed
together, and at the lower portion thereof, the lower end edges 7 of the
flat portions 2a, the lower portion of the side edges 6 and the
peripheral edge 8 of the bottom portion 4 are heat-sealed together.
Thereafter, one corner portion of the upper portion of the bag body 2 is
cut away, thus forming the mount opening 9. The mount opening 9 may,
however, be preliminarily formed to the flat portions 2a.
[0078] The spout unit 3 is injection-molded by using the mold of the
structure mentioned above. The injection molding is performed by
injecting the resin from the top side of the pyramid-shaped cavity 43
formed to the mold 40. Upon the injection molding, as shown in FIGS. 2
and 3, the pyramid-shaped spout unit 3 is formed. Thereafter, the
insertion holes 21 into which the parts feeders 60 are inserted are
formed between the top closed portion 16 and the seal-opening portion 20
of the spout unit 3.
[0079] As mentioned above, the bag body 2 and the spout unit 3 are formed,
and then, the spout unit 3 is connected to the bag body 2. At this time,
the parts feeders 60 are utilized and conveyed to connection stage, not
shown, of the bag body 2 and the spout unit 3 in a state that the spout
unit 3 is directed to the predetermined direction. The parts feeders 60
serve as holding means for holding the spout unit 3 in a constant
attitude. The spout unit is conveyed by the parts feeders 60 so that the
connection opening 15 of the spout unit 3 makes coincident with the mount
opening 9 of the bag body 2 by using a robot arm, not shown.
[0080] Next, the connection opening portion 15 and the mount opening
portion 9 are bonded, and then, the spout unit 3 is connected to the bag
body 2. In this operation, the seal portion 19 formed to the spout unit 3
is coincident with the side edges 6 and the upper edge 10 of the bag body
2. Further, in this step, only the seal portion 19 of the spout unit 3,
in all the seal portions 19, coincident with the side edge 6 of the bag
body 2 is sealed together, and the inner content is fed into the bag body
2 through the upper portion of the bag body that is not sealed and
opened, and thereafter, the upper edge of the bag body 10 is heat-sealed.
[0081] In this step, only the seal portion 19 in all the seal portions of
the spout unit 3 coincident with the upper edge of the bag body 2 is
heat-sealed together with the upper edge 10, so that both the spout unit
3 and the bag body 2 can be completely connected to each other.
[0082] Thereafter, the cutout 24 for seal-opening is formed to the same
axial position as the seal-opening portion 20 at the seal portion 19 of
the spout unit 3, thus completing the standing pouch 1.
[0083] The standing pouch 1 composed of the bag body 2 and the spout unit
3 of the structures mentioned above is used in a manner shown in FIGS. 12
and 13. Further, this standing pouch 1 is suitable for containing either
one of liquid material or particle material. As the liquid material,
there is listed, as an example, shampoo, linth, liquid soup, food oil,
service condiment, or like, and as the particle material, there is
listed, as an example, pet food, service condiment, or like.
[0084] FIG. 12 shows a state that the inner content fills the standing
pouch 1, which is then closed and sealed. In this sealed condition, the
bag body 2 can be opened by tearing the seal-opening portion 20 of the
spout unit 3. Since the seal-opening portion 20 is positioned between the
top closed portion 16 and the fastener 13 of the spout unit 3, the top
closed portion 16 is separated from the spout unit by tearing the
seal-opening portion 20.
[0085] FIG. 13 shows the seal-opened state. In order to make large the
opening size of the seal-opening portion 20, the upper edge 10 and the
side edges 6 of the standing pouch 1 are pushed toward each other as
shown with arrows. Thereby, the center folded lines 18 formed to the wall
surface portions 11 of the spout unit 3 are protruded outward so as to be
separated from each other, and as a result, the seal-opening portion 20
is opened in shape of rhomb.
[0086] Since the spout unit 3 is formed of resin, the wall surface
portions 11 thereof have high rigidity, and since the end folded lines 17
and the center folded lines 18 are formed, the wall surface portions 11
can be easily folded at the positions of the center folded lines 18. In
addition, at the positions of the center folded lines 18, lines to be
folded are formed to both the male and female fastener parts 25 and 27
constituting the fastener 13 and the bent portions 14 are also formed.
Therefore, the opposing male and fastener parts 25 and 27 are easily
separated from each other, and the seal-opening portion 20 opened in
shape of rhomb is maintained in its opened state, whereby the inner
content can be easily poured out. This means that a required amount of
the inner content can be easily taken out.
[0087] After the pouring out of the inner content, the engaging pawls 26
of the male fastener part 25 are engaged with the engaging wall sections
28 of the female fastener part 27 to thereby close and seal the
[0088] Further, this standing pouch 1 is suitable for containing creamy
material other than the liquid material and particle material, such as
for example, cream applied on a surface of a decoration cake. In this
case, by suitably setting the opening size or dimension of the
seal-opening portion 20, the standing pouch 1 can be itself utilized as a
cream injector, thus being convenient.
[0089] In the above disclosure, although there is explained the mode in
which the bent portion is positioned on the connection opening side
forming the pyramid-shaped bottom rather than the end folded line side at
the time of attaching the fastener, as shown in FIG. 14, the bent portion
may be positioned on the closing side 75 constituting the top portion of
the pyramid-shape. The spout unit 70 shown in FIG. 14 also has a
pyramid-shaped outer appearance and includes a wall surface portion 71
constituting a portion of a peripheral surface of the standing pouch and
a fastener 73 provided on the inner surface of the wall surface portion
71, which are formed integrally with each other.
[0090] The top side portion of the pyramid-shape structure is formed as
the closing portion 75, and its bottom portion is opened as a connection
opening 76 which is connected to the bag body. Further, as like the spout
unit 3 in the former embodiment, the spout unit 70 is also formed to be
foldable. The end folded line portions 77 forming side lines positioned
on one diagonal line constitutes portions positioned to both side edges
thereof when folded. A seal portion extending toward outside of the spout
unit 70 is provided on the outside of the end folded line portion 77. On
the other hand, the central portion when folded constitutes the central
folded line portion 78 formed from a side line positioned on the other
diagonal line. The central folded line portion 78 is formed by recessing
the inner surface of the wall surface portion 71 for easy opening as
mentioned hereinafter.
[0091] The fastener 73 is composed of a male fastener part and a female
fastener part, and central portions of these fastener parts in the axial
direction coincide with the central folded line portion 78 positioned on
the paired centers of the surfaces. The fastener 73 has a central side
positioned axially inside from both the ends and positioned on the closed
portion (75) side forming the pyramid-shaped top portion, and the bent
portions 74 are formed on the center portions.
[0092] As mentioned above, in the mode in which the center of the fastener
73 is formed so as to protrude on the side of the closed portion 75, the
fastener 73 serves as "watering pot" at the time of taking out the inner
content so that small particle powders, for example, can be smoothly
[0093] Furthermore, a seal-opening portion 79 is formed on the side of the
closed portion 79 rather than the fastener 73. Insertion holes 81 for
inserting parts feeders are formed between the seal-opening portion and
the closed portion 75.
[0094] As mentioned above, although the example in which the spout unit is
disposed to the corner portion at the upper portion of the standing
pouch, the present invention is not limited to this example, and as shown
in FIG. 15, the spout unit may be provided to the central portion in the
width direction of the standing pouch.
[0095] This standing pouch 100 includes a bag body 101 and a spout unit
102 which is connected to the bag body 101 and through which an inner
content is taken out. The bag body 101 is composed of a pair of opposing
flat surface portions 103 and a bottom surface portion 104 closing the
bottom. The flat surface portions 103 are heat-sealed at their side edges
so as to provide a tubular structure. The bag body 101 has an upper
corner portions 109 each having a circular-arc (round) shape so as to
connect an upper edge 110 and side edges 106. In addition, the central
portion in the width direction of the bag body 101 is formed with a mount
opening 111 by cutting out it so as to provide a V-shape toward downward
of the bag body 101. On the other hand, the bottom surface portion 104 is
folded into V-shape, and a folded line 105 at the center of the folded
bottom portion 104 is directed upward of the standing pouch 100.
Furthermore, the lower end edges 107 of the paired flat surface portions
103 and the peripheral edge 108 of the bottom surface portion 104 are
heat-sealed so as to provide substantially elliptical shape when widening
the bottom portion 104.
[0096] This standing pouch 100 is formed from a film material such as
laminated film as shown in FIG. 1.
[0097] Incidentally, the spout unit 102 is provided so as to project
upward from the upper portion of the bag body 101 at the central portion
in the width direction of the bag body 101. The spout unit 102 has a
structure as like as that of the standing pouch 100 shown in FIG. 1.
[0098] That is, the wall surface portions 121 formed as one portion of the
flat surface portions 10 of the standing pouch 103 have the
pyramid-shaped appearance and are provided with the fastener 123 on the
inner surfaces of the wall surface portions 121. Further, the spout unit
102 including the wall surface portions 121 and the fastener 123 are all
integrally formed by the injection molding process.
[0099] The wall surface portion 121 has its pyramid-shaped top portion as
closed portion 126 and has the opened bottom portion, which serves as the
connection opening 125 connected to the bag body 101. The wall surface
portion 121 is foldable so as to provide two paired adjacent surface
portions 122. When folded, the portions positioned on both side edges
constitute the end folded line portions 127 forming the sides positioned
on one diagonal line. To these portions, the seal portions 129 are formed
so as to protrude outward. On the other hand, the central portion at the
time of being folded constitutes the central folded line portion 128
forming the side line positioned on the other diagonal line. This central
folded line portion 128 is formed by recessing the inner surface of the
wall surface portion 121. Further, the connection opening 125 connected
to the bag body 101 projects to the bag body side so as to be tapered
toward the central folded line portion side from the end folded line
portions 127.
[0100] Incidentally, the male fastener part of the fastener 123 is
provided on the inner surface of the wall surface portion 121 forming one
pair of the surfaces 122 with the end folded line portions 127 being
boundary thereof, and on the other hand, the female fastener part of the
fastener 123 is provided on the inner surface of the other wall surface
portion 121 forming the other pair of the surfaces 122. These male and
female fastener parts have centers in the axial directions which are
coincident with the central folded line portions 128 centrally positioned
on the respective paired surfaces 122. Furthermore, these male and female
fastener parts are disposed to be parallel with the connection opening
125 of the wall surface portion 121, and the bent portion 124 is formed
to the center portion thereof These male and female fastener parts of the
fastener 123 are substantially the same structure as that shown in FIGS.
[0101] Furthermore, the spout unit 102 is provided with a seal-opening
portion 130, between the closed top portion 126 and the fastener 123,
which can be cut away so that the top portion is separated from the spout
unit 102. This seal-opening portion 130 is perpendicular to the central
folded line portion 128 so as to connect the end folded line portions 127
positioned on both the side portions of the spout unit 102. Further, the
seal portion 129 is formed with a cutout 131 at the position on the same
line as the seal-opening portion 130 so as to be easily opened. Parts
feeder insertion holes 132 are also formed to the wall surface portions
121 between the seal-opening portion 130 and the top closed portion 126.
[0102] Further, in this embodiment, the central portion of the fastener
may be bent toward the to closed portion side.
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