JP2003011984A - Self-supporting bag, its manufacturing method and packaging item of self-supporting bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-supporting bag, its manufacturing method capable of avoiding cost up due to useless cut pieces of a film and forming a constricted outlet without keeping a bag dead space in an upper portion of the bag, attaching a fastener to the constricted outlet without uselessness and making two self-supporting bags each with the fastener at one same time changing their directions by 180 degrees and to provide a packaging item of the self-supporting bag. SOLUTION: A side seal 5 is arranged at both side margins of a front surface portion 1 of a bag and a rear surface portion 2 of the bag, both bags possesses bottom gussets 3 and bottom seals 4 and 4, the upper margin of the bag is a bent outline 6 symmetrical with respect to a middle point 6a of the line length to form a constricted outlet portion 7 and a shoulder portion 8 and then a top seal 10 and an opening 11 are separately mounted. A stripe of a fastener strip 9 is melt-bonded to the inner surface of the constricted outlet portion 7 at height corresponding to the middle pint or two stripes of fastener strips are melt-bonded thereto in the positions keeping the same distance in the upward and downward directions from the middle point.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention can prevent the cut pieces of the film from being wasted and resulting in high cost.
Moreover, the constriction spout can be formed without securing a large dead space in the upper part of the bag, and a zipper can be attached to the constriction spout easily without waste, and one side of the upper part of the bag is a side seal on one side of the bag. The two freestanding bags with zipper, which are the stenosis outlets that are extended and extended and the other side is the shoulder, with the other shoulder facing the stenosis outlet of one bag. The present invention relates to a self-supporting bag, a method for manufacturing the self-supporting bag, and a package for the self-supporting bag, which can be turned into 180 ° in a closed state to make a bag at once.

[0002]

2. Description of the Related Art A bag having side seals on both sides of a bag front surface and a bag rear surface, a bottom gusset at the bottom, and a constriction spout capable of taking out an appropriate amount of contents at the top is a plastic bottle, Replaced with shape-retaining containers such as glass bottles and metal cans, in addition to various liquid detergents, various powder detergents, cleansers, softeners, emulsion glue, various beverages such as milk and soft drinks, soy sauce, sauce It is used for packaging liquid products such as liquid seasonings such as noodle soup and powders such as milk powder, sugar and cocoa.

A bag having both side edges of a front surface portion and a rear surface portion of the bag which are side-sealed, a bottom gusset at a lower portion, and a constriction spout for allowing an appropriate amount of contents to be taken out at an upper portion,
The prior art for which a patent search was conducted is listed below (not all).

(1) (Bag in which a dead space is not formed and a cut piece is not exposed and a constriction spout is formed in a corner of the bag) JP-A-11-310276, JP-A-10-338249, JP-A-09-05870
6, JP-A-08-183542 (square bottom bag), patent 3019871 (bag with zipper), patent 2889543,

(2) (Bag in which a beak-shaped stenosis outlet is formed by punching out cut pieces) Japanese Patent Application No. 2001-151248, Japanese Patent Application No. 2001-002084, and Japanese Patent Application Laid-Open No. 2000-28109
1, JP 2000-128192, JP 2000-118544, JP 2000-1
18543, JP 2000-085801, JP 2000-062814, JP 1
1-349013, JP 11-349006, JP 11-349005, JP
11-321883, JP11-314652, JP11-310248, JP11-245956, JP11-245955, JP11-236053, JP11-227801, JP11-227793, JP11-27953. 208681,
JP-A-11-130092, JP-A-11-043160, JP-A-10-33824
5, JP-A-10-218204, JP-A-10-167289 (bag with zipper), JP-A-10-095439, special table 09-511476, JP-A 09-2
21149, JP09-058706, JP06-305057, Actual flat 7-3
7941 FIG. 8 embodiment, Japanese Patent No. 2843100,

(3) (Bag in which a dead space is formed by heat sealing and a constriction spout is formed without exposing cut pieces) JP-A-2000-203603 (not a pouch), JP-A-11-34901
1, JP-A-10-273153, JP-A-10-194305 (not a bag with a zipper, not a pouch), JP-A-09-240689 (bag with a zipper), JP-A-07-257607, JP-A-07-242254, JP-A-07- 0
41014 (Zipper bag), JP-A-06-305057 (Zipper bag), Actual Kaihei 07-037941 (Zipper bag), Actual fair 06-01
7723

(4) (Bag in which a dead space is formed by heat sealing and a cut piece is punched out to form a beak-shaped narrowing outlet) JP-A-11-070947, JP-A-11-059699, JP-A-11-059699 -04918
6,

(5) (Bag in which the stenosis outlet is made of another film and connected to the bag body) JP-A-10-329847, JP-A-08-089559 (bag with zipper),
JP 07-089558 (bag with zipper),

(6) (Bag having a narrowed passage in the bag) JP 10-081347, JP 08-268444 (bag with zipper),

[0010]

The above (1) (a bag in which a constriction spout is formed at the corner of the bag without forming dead spaces and without cutting pieces) effectively uses a film. . However, this form is similar to a medicine pouch,
The front shape of the bag is limited to a rectangle, which makes it unattractive as a package design. And it is unsuitable when it is equipped with a zipper. Next, the above (2) (a bag in which a beak-shaped stenosis outlet is formed by punching out a cut piece) is
It is suitable as a refill pack for fluids such as detergents, but the film is wasted as cut pieces, resulting in high costs. Also, since the cut pieces are discarded, ISO9001
It is difficult to obtain certification. And it is unsuitable when it is equipped with a zipper. Next, in the above (3) (a bag in which a dead space is created by heat sealing and a constriction spout is formed without exposing cut pieces), the film is wasted. And it is unsuitable when it is equipped with a zipper.
When the constriction spout is provided in the center of the width of the bag upper edge, the entire width of the bag upper edge is cut off to open the spout, and when removing an appropriate amount of contents, unnecessary parts on both sides of the constriction spout become an obstacle. ing. It is not suitable as a refill spout. In addition, the front shape of the bag is limited to a rectangular shape, which is unattractive as a package design. Next, above (4)
The film is wasted (a bag in which a dead space is made by heat sealing and a cut piece is made by punching to form a beak-shaped narrowing outlet). Also, since the cut pieces are discarded, it is difficult to obtain ISO9001 certification. And
Not suitable with a zipper. Next, the above (5) (a bag in which the stenosis spout is made of another film and connected to the bag body) is a pouch with a zipper so that the stenosis spout has a zipper. Since it is connected to the bag body, the number of bag-manufacturing processes is large and the bag-manufacturing capacity is extremely low.
Bag making cost is high. Next, the above (6) (bag having a narrowed passage in the bag) is for a small bag of soy sauce or the like and is not suitable for refilling. JP 7-41014 is 2/3 of the bag width
The length of the zipper is unnecessary and wasteful, which increases the cost. In the other above-mentioned inventions, the rectangular bag has a narrowed passage or a narrowed outlet formed by sealing, and the narrowed passage or the narrowed outlet is narrowed to form an unnecessary portion outside the seal. However, the film is wasted, and unnecessary portions on both sides of the stenosis outlet are obstructive when the appropriate amount of the content is taken out.

Next, as a problem to be solved in the present invention, when a narrowed passage is extended to the upper side of the bag and provided at the center of the width of the bag, not only the film is wasted on both sides of the narrowed passage but also in the refill bag. Has the problem that the contents are hard to come out even if the bag is slightly tilted. Then, in any case, in order to attach the zipper to the constricted passage, the excess zipper is cut off (patent 2843100), or it is buried in the seal flat portion of the bag (Japanese Patent Laid-Open No. 10-194305,
Unexamined Japanese Patent Publication No. 06-305057, Kaikaihei 7-41014, Kaikaihei 7-37941, Kaihei 617723), or whether a separately made pouch with a zipper is connected to the bag body (Saikaihei 7-89558, Kaihei 7-895
One of the methods in 59) is adopted, resulting in high bag manufacturing costs and waste of materials.

The present invention can solve the above-mentioned problems, can avoid the waste of the cut pieces of the film caused by punching during the bag making process, and can provide a large dead space at the upper part of the bag. It is possible to form a stenosis outlet for pouring out the contents without securing it, and a zipper can be attached to the stenosis outlet, and one side part of the upper part of the bag is a stenosis outlet part of the overhang shape and the other side Two self-supporting bags with zippers, whose parts are shoulders, are continuous in two rows with 180 degrees turned from each other so that the constriction outlet of one bag faces the other shoulder. It is an object of the present invention to provide a self-supporting bag, a method for manufacturing the self-supporting bag, and a package for the self-supporting bag, which can be manufactured as a bag.

[0013]

According to a first aspect of the present invention (the invention according to claim 1), side seals are provided on both side edges of a bag front surface portion and a bag rear surface portion, and lower portions of the bag front surface portion and the bag rear surface portion are provided. There is a bottom gusset in between, and bottom seals are added to the bottom gusset and the front part of the bag and the bottom edges of the bottom gusset and the back part of the bag to provide self-supporting properties.The top edge of the bag is point-symmetric with respect to the midpoint of the line length. Is a bent contour line, one half of the contour line forms a stenotic outlet portion of the overhanging shape, and the other half of the contour line forms a shoulder portion, the stenotic outlet portion and the shoulder portion. The top seal and the opening are distributed in the section, and the inner surface of the stenosis outlet has one zipper strip at a height corresponding to the midpoint, or two zipper strips equidistantly above and below the midpoint. It is intended to provide a self-supporting bag characterized by being welded.

The second invention of the present application (the invention according to claim 2)
Is a method of stacking two films having a required width for forming a bag front surface portion and a bag rear surface portion, sandwiching one or two zipper strips in the width center between the two films, and A double-folded film for forming a bottom gusset is sandwiched between both edges of the film, and the webs on both sides of the zipper strip are welded to the inner surface of the film on each side, and the bottom and side seals are applied to the bottom gusset. As a closed flat bag having a zipper strip in the center on both sides, a bent top seal is applied in the middle of the closed flat bag, and a bent cut that bisects the closed flat bag and bisects the zipper strip. By doing so, one side part of the upper part of each bag is a stenosis outlet part with a zipper attached, and the other one side part is a shoulder part and has a bottom gusset. Provided is a bag-making method for a self-supporting bag, characterized in that two self-supporting bags each having a top seal and an opening distributed on a shoulder and the shoulder are turned at 180 degrees with respect to each other to make a bag at once. To do.

The third invention of the present application (the invention according to claim 3)
Is superposed two continuous films of a required width for forming the bag front surface portion and the bag rear surface portion, sandwiching one continuous zipper strip in the width center between the two films,
Further, a continuous bi-fold film for forming a bottom gusset is sandwiched between both side edges of the two films so that the film is transferred in this state, and the webs on both sides of the zipper strip are separated from the film on each side. Along with being welded to the inner surface, a bottom seal was applied to form a continuous closed flat bag with bottom gussets on both sides and a zipper strip in the center, and then side seals were applied at a bag width pitch.
In addition, in the middle of the width direction of the continuous closed flat bag, after bending top seal so that both ends are connected to one side seal and the next one side seal and cross the zipper strip, By cutting the curved contour line that bisects the bent top seal and the zipper strip, and by cutting the center of the seal width of the side seal, one side of the upper part of each bag has an overhanging shape and a zipper is attached. Two self-supporting bags, which are the stenosis outlet part and the other one side part is the shoulder part and which has the bottom gusset and which has the top seal and the opening distributed to the stenosis outlet part and the shoulder part,
It is intended to provide a bag-making method for a self-supporting bag, which is characterized in that the bag is continuously formed in two rows with the direction turned 180 degrees.

The fourth invention of the present application (the invention according to claim 4)
Is the self-supporting bag according to [claim 1] or [claim 2]
Alternatively, the opening of the self-supporting bag manufactured by the bag manufacturing method according to claim 3 is opened to fill the content, and the opening is closed to perform the top seal, and the self-supporting bag is packaged. It provides the body.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of a self-supporting bag with a zipper according to the first invention of the present application will be described with reference to FIG. As shown in FIG. 1, a self-supporting bag with a zipper according to this embodiment has two films for forming a bag front face portion 1 and a bag rear face portion 2 superposed on each other, and a bottom gusset 3 is provided between the lower portions of the films. A bottom for making a self-supporting structure by stacking two folded films that are convex inside the bag for forming and forming a suspension bridge rib at the lower edge of the bag front part 1 and one lower edge of the bottom gusset 3. A seal 4 is provided, and a bottom seal 4 is provided on the lower edge of the bag rear surface portion 2 and the other lower edge of the bottom gusset 3 to provide self-supporting ribs. Side edges of the part 1 and the bag rear surface part 2 are sealed together, and side edges of the bag front surface part 1, the side edges of the bottom gusset 3 and the bag rear surface part 2 are joined together to form a palm-like side seal. A curved contour line in which the upper edge of the bag is point-symmetrical with respect to the midpoint 6a of the line length. One contour line half portion 6b is bordered by the middle point 6a and constitutes the bulging-shaped constriction outlet portion 7, and the other contour line half portion 6c is the shoulder portion 8 of the bag.
And a single strip of zipper strip 9 is welded to the inner surfaces of the bag front face 1 and the bag rear face 2 at a height corresponding to the midpoint 6a. Top seal 10 is applied to the contour line half portion 6b that constitutes the stenosis outlet portion 7 including the upper and lower neighboring portions and the remaining portion is not adhered and is secured as an opening 11 for filling the contents. ing. Zipper crush seals 14a and 14b are provided on both ends of the zipper strip 9. In the original portion of the first embodiment, the contour of the upper edge of the bag is formed by a stepwise contour line 6 with the midpoint 6a as point symmetry to form a stenosis outlet portion 7 and a shoulder portion 8. Is provided with a single zipper strip 9, and a top seal 10 is provided in the vicinity of the outer edge of the zipper strip 9, and the edge of the shoulder 8 is not adhered and is secured as an opening 11 for filling the contents. That is the point.
Therefore, since the contour of the upper edge of the bag is formed by the stepwise contour line 6 having the center point 6a as point symmetry, the center point 6a is located at the center of the bag width as shown by the dimension in the figure, and the constriction outlet is formed. The width dimension of the portion 7 is equal to the width dimension of the shoulder portion 8, and the dimension from the midpoint 6a to the tip of the stenosis outlet portion 7 is equal to the dimension from the midpoint 6a to the edge of the shoulder portion 8. If the bag width is too large and the half width of the bag is too large as the width of the stenosis outlet part 7, the side width of the stenosis outlet part 7 on the center side of the bag is set to be large, and about 200 bags are stacked. By press die cutting, the side edge of the stenosis outlet portion 7 on the center side of the bag is cut off so that the width of the stenosis outlet portion 7 is smaller than half the bag width, and the width of the shoulder portion 8, that is, the opening 11 is increased accordingly. Is also good. On the contrary, in the present invention, the width of the shoulder portion 8, that is, the opening 11 is made smaller than half the bag width, and the width of the stenosis outlet portion 7 is not made larger than the half bag width by that amount. The reason is that, as shown in FIG. 2, the self-supporting bag of the present invention makes two bags at the same time with the upper parts of the bags facing each other, and the constriction outlet portion of one self-supporting bag is the other self-supporting bag. Next to the stenosis outlet of the stenosis outlet, a bent contour line 6 is provided so that the stenosis outlet of one self-supporting bag and the shoulder of the other self-supporting bag face each other, and the zipper strip 9 is divided into two parts and wasted. This is because the configuration eliminates As the film forming the bag front surface portion 1 and the bag rear surface portion 2, a laminated film having an inner surface having a heat-sealing property and a barrier property is used. For the film that makes up the bottom gusset 3,
When a laminated film having an inner surface having a heat-sealing property and a barrier property is used, semicircular cuts 15, 15 are provided on both side edges of the bottom gusset 3 so that the side seal 5,
By applying No. 5, four sheets of the side edge of the bag front portion 1, the side edge of the bottom gusset 3 and the side edge of the bag rear surface portion 2 can be welded in a palm shape. In this case, the bottom seals 4 and 4 can be formed so as to occupy the circular outer portion without sandwiching the anvil plate in the bottom gusset 3. When a laminated film having heat-sealing inner and outer surfaces and a barrier property is used for the film forming the bottom gusset 3,
Even if semicircular cuts 15 and 15 are not provided on both side edges of the bottom gusset 3, the side edges of the bag front portion 1 and the bottom gusset 3 and the side edge of the bag rear surface portion 2 can be provided by providing the side seals 5 and 5. It is possible to weld the four sheets in the shape of a palm. In this case, the bottom seals 4 and 4 can be formed so as to occupy the circular outer portion by sandwiching an anvil plate (not shown) in the bottom gusset 3. The zipper strip 9 is composed of a male zipper strip and a female zipper strip, and is attached to the inner surface of the constriction outlet 7 facing each other. The male zipper strip is formed, for example, from a male side web fixed to the inner surface of the packaging film 1 which is the front surface of the bag, and a male meshing part co-extruded so as to protrude integrally from the male side web. Become. The male engagement portion is fixed to the center of the width of the male side web. The female zipper strip is, for example, a wrapping film 2 which is a back surface of the bag.
A female-side web fixed to the inner surface of the female-side web, and a female-side meshing part that is co-extruded so as to project integrally from the female-side web and that receives the male-type meshing part in the groove space and snaps it. . The female meshing portion is fixed to the center of the width of the female web. The zipper strip 9 is not limited to the above configuration. Further, the bag front face portion 1, the bag rear face portion 2 and the bottom gusset 3 may be folded and the bottom seals 4 and 4 may be provided by hanging a wide film on a former and folding it. Further, the bag front face portion 1, the bag rear face portion 2 and the bottom gusset 3 may be folded and the bottom seals 4 and 4 may be provided by hanging a wide film on a former and folding it. In this self-supporting bag, both sides of the shoulder portion 8 are suctioned and separated to open the opening 11 to fill the contents, and the zipper strip 9 does not have to be opened. After filling the contents, the opening 11 is closed. A top seal is applied to the edge. As an easy-opening means, it is positioned above the zipper strip 9 and below the top seal 10, and as an easy-opening means, a half-cut score line 12 is formed on each surface of the bag front surface portion 1 and the bag rear surface portion 2. Notches 13 are provided at both ends or one side of the score line 12 while being provided. The zipper strip 9 can be opened by opening the zipper strip 9 by the easy-opening means, and a necessary amount of the contents can be taken out, and the zipper strip 9 can be closed again. The shape of the seal pattern that gives the bag self-supporting property is preferably a suspension bridge type seal pattern in which the central portion is low and the height is high toward both ends, but the bag bottom shape is preferably a ship bottom shape, but it is an obtuse V-shaped seal pattern. It may be a seal pattern or the like. The lower part of the bag filled with contents has a shape like an elliptic cylinder, a square cylinder, or a hexagonal cylinder, depending on the seal pattern, and the rib effect formed by the heat seal part on the outer periphery of the bottom surface provides good self-supporting property. The shape of the bag is stabilized.

Next, with reference to FIG. 2, a method for making the self-supporting bag of FIGS. 1 (a) and 1 (b) will be described. Two films having a required width for forming the bag front surface portions 1 and 1 and the bag rear surface portions 2 and 2 of the two self-supporting bags are overlapped with each other, and one strip (or two strips) is provided at the width center between the two films. ) A zipper strip 9 is sandwiched, and a bottom gusset 3, between both side edges of the two films.
Sandwiching a double-folded film to form 3 and welding the webs on both sides of the zipper strip 9 to the inner surface of the film on each side, and at the both ends and the central part of the zipper strip 9 are provided with zipper crush seals 14a, 14a, 14b. Then, the bottom seals 4 and 4 and the side seals 5 and 5 for forming the suspension bridge ribs and imparting the self-supporting property are applied. Therefore, the bottom gussets 3 and 3 enter on both sides and the zipper strip 9
It is a sealed flat bag provided with. Then, a bent seal 10 is provided which intersects the center of the zipper strip 9 and extends in the longitudinal direction of the bag, and is divided into left and right at both ends separated from the zipper strip 9 by a required dimension and extending parallel to the zipper strip 9. Then, the zipper strip is bisected so that the length thereof is half the width of the bag. Therefore, the central vertical cut portion bisects the central sealing portion of the curved top seal 10 into the half width and bends in the longitudinal direction of the bag. 0.5m more than the top seal 10
A curved cut 6 is formed which extends m and is divided into left and right at both ends of the central vertical cut portion and extends 0.5 mm apart without overlapping the curved top seal 10 and extending parallel to the zipper strip 9. This curved cut 6 forms the upper edges of the bags on both sides, and is matched with the curved contour line 6 which is point-symmetric with respect to the midpoint 6a of the line length shown in FIG. In FIG. 1, reference numeral 16 is an unsealed portion generated in connection with the bag manufacturing method. Therefore, the upper half of each bag is a constriction outlet 7 having a bulging shape and is provided with a zipper 9 and the other half is a shoulder 8 having a bottom gusset 3 and constricting the constriction. A bent top seal 10 is attached to the edge of the outlet 7,
Two self-supporting bags, in which the edge of the shoulder 8 is unsealed and secured as the opening 11, can be made at once by turning 180 degrees from each other. In addition, the steps up to forming a double-sided self-supporting bag having the curved top seal 10 are performed by a double-row bag making machine, and then, for example, 50 bags are stacked and the edges are aligned so that the edges are in and out by press die cutting. You may make a cut which corresponds to the curved cut line 6. At that time, it is advisable to make a corner cut that rounds the corner. The bag making method of the self-supporting bag of the second invention of the present application is not limited to the cutting with the curved contour line 6 which is point-symmetric with respect to the midpoint 6a of the line length. As a closed flat bag in which the bottom gusset enters on both sides and a zipper strip is provided in the center, a curved top seal is applied in the middle of the closed flat bag and the closed flat bag is divided into two and the zipper strip is divided into two. By performing the cutting, one side portion of the upper portion of each bag is a stenosis outlet portion with a zipper attached and the other one side portion is a shoulder portion having a bottom gusset and the stenosis outlet portion and the stenosis outlet portion. It suffices if two self-supporting bags each having a top seal and an opening distributed over the shoulder are turned 180 degrees from each other and can be made at once. Two self-supporting bags having exactly the same shape cannot be formed unless they are cut at the bending contour line 6 that is point-symmetric with respect to the midpoint 6a of the line length, but the two self-supporting bags have the same bag width, The width of the narrowed outlet portion of one self-supporting bag may be different from the width of the narrowed outlet portion of another self-supporting bag. In other words, if a curved top seal and a curved cut are appropriately determined, two types of bags with different widths at the stenosis outlet and a zipper at the stenosis outlet are manufactured in parallel at one time. You can have a bag. Furthermore, the order of applying the bottom seals 4, 4, the side seals 5d, 5d and the bent top seal 10 is not particularly limited.

Next, an embodiment of the method for making a self-supporting bag according to the third invention of the present application will be described with reference to FIG. The bag-making method for the self-supporting bag according to this embodiment is the bag-making method for the self-supporting bag shown in FIG. Two continuous films F1 and F2 having a required width for forming the bag front surface portion 1 and the bag rear surface portion 2 are overlapped, and a continuous zipper strip 9 is sandwiched in the width center between the two films, Also, the two films
Continuous double-folded films F3 and F4 for forming the bottom gusset 3 are sandwiched between both side edges of F1 and F2, and the film is fed by the film feed rolls 17a and 17b so that the film is brought into this state. And at the first station,
The sandwiching plates 18a, 18b for preventing the webs from being welded to each other are sandwiched between the webs of the male zipper strip and the webs of the female zipper strip, and the webs of the zipper strips are sandwiched by a pair of upper and lower heat sealers 19 to press each web. Side film F1, F
The bottom seals 4 and 4 are welded to the inner surface of 2 and pressed against the two pairs of bottom seal heaters 20a and 20b on both sides.
Then, a continuous closed flat bag having the bottom gussets 3 on both sides and having the zipper strip 9 in the center is formed. Next, at the next station, a pair of upper and lower side seal heaters 21 that are long in the direction orthogonal to the film transfer direction are aligned with the planned cutting positions of the self-supporting bag and are pinched to form side seals at the bag width pitch. Give. Next, at the next station, two pairs of zipper crushing heaters 22 located above and below the intersection point of the zipper strip 9 and the side seal 5 and the middle of the intersection point and the intersection point.
A and 22b are squeezed to provide zipper crushing seals 14a and 14b, and press die cuts 23a and 23b provide half-cut score lines 12. Next, at the next station, the bent heater 24 for top seal is filmed.
It is sandwiched between F1 and F2, and it is located in the middle of the width direction of the continuous closed flat bag and has one side seal 5 at both ends and the next side seal 5
A bent top seal 10 is applied so as to connect to the zipper strip 9 and to intersect the zipper strip 9. Next, at the next station, the bag-shaped upper edge forming bent cutter 25 that matches the bent contour line 6 is squeezed between the films F1 and F2 to cut the bent top seal 10 and the zipper strip 9 in half in the middle. To do. Next, at the next station, the end cutter 26 cuts the center of the seal width of the side seal 5. As described above, the zipper 9 is attached to the stenosis outlet portion 7 in which one side portion of the upper part of each bag has an overhanging shape, and the other one side portion is the shoulder portion 8 having the bottom gusset 3 and the stenosis outlet portion 7 and the shoulder portion 8. The two self-supporting bags in which the top seal and the opening are distributed can be continuously formed into two rows with their directions turned 180 degrees.

Next, a second embodiment of the self-supporting bag of the first invention of the present application will be described with reference to FIGS. 4 (a) and 4 (b). In the self-supporting bag according to this embodiment, as in FIG. 1, the films constituting the bag front surface portion 1, the bag rear surface portion 2 and the bottom gusset 3 are superposed, and the bottom seals 4, 4 and the side seals 5, 5 are formed. It has been subjected. In the original part of this embodiment, the stenosis outlet part 7 and the shoulder part 8 are constituted by the contour 6 of the upper edge of the bag being point-symmetrical with respect to the midpoint 6a, and the stenosis is formed at the midpoint 6a. The outlet part 7 is provided with a strip of zipper strip 9 and a top seal 10 is applied to the edge of the shoulder 8 formed by the contour line half 6c, and at the outer contour line half 6b of the zipper strip 9. This is that the edge of the formed constriction outlet 7 is not adhered and is secured as the opening 11 for filling the contents. The difference from the self-supporting bag of FIG. 1 is that the positions of the top seal 10 and the opening 11 are reversed. The self-supporting bag also opens the zipper strip 9 when filling the contents. After filling the contents, a top seal is applied to the edge of the stenosis outlet 7. As the easy-opening means, as in the self-supporting bag of FIG. 1, the score line 12 and the notch 1 are used.
3 is attached. The zipper strip 9 can be opened, the necessary amount of contents can be taken out, and the zipper strip 9 can be closed again.

Next, a method for making the self-supporting bag shown in FIGS. 4 (a) and 4 (b) will be described with reference to FIG. Two films having a required width for forming the bag front surface portions 1 and 1 and the bag rear surface portions 2 and 2 of the two self-supporting bags are overlapped with each other, and the two zipper strips 9A are provided in the width center between the two films. , 9B, and a bottom gusset 3, between both side edges of the two films.
Sandwiching a double-folded film for forming 3 and welding the webs on both sides of the zipper strip 9A to the inner surface of the film on each side and attaching zipper crush seals 14a, 14a, 14b to both ends and the center of the zipper strip 9B. After applying, the suspension bridge-shaped bottom seals 4, 4 and the side seals 5, 5 for imparting self-sustaining property are applied. Thus, the bottom gussets 3 and 3 enter both sides to form a closed flat bag having a zipper strip 9 in the center. Then, the zipper strip 9 is divided into left and right at both ends which extend in the longitudinal direction of the bag while intersecting the center of the zipper strip 9 and are separated from the zipper strip 9 by a required dimension.
A bent seal 10 extending in parallel with is applied. Up to this point, the steps are the same as those of the self-supporting bag manufacturing method of FIG. The zipper strip is then bisected so that the length is half the bag width, and thus the central longitudinal cut portion bisects the central seal portion of the flex seal 10 into half the width to provide a flex seal in the longitudinal direction of the bag. For example, a curved cut 6 extending 0.5 mm longer than 10 and divided into right and left at both ends of the central vertical cut portion and extending 0.5 mm apart without overlapping the flexible seal 10 and extending parallel to the zipper strip 9. This bent cut 6
Forms the upper edges of the two self-supporting bags, and is made to coincide with the curved contour line 6 which is point-symmetric with respect to the midpoint 6a of the line length shown in FIG. In FIG. 3, reference numeral 17b is an unsealed portion generated in connection with the bag manufacturing method. Thus, one half of the upper part of each bag is a bulging shape and is a constriction outlet 7 provided with two strips of zipper strips 9A, 9B, and the other half of the one is a shoulder 8 and a bottom gusset 3
And the end edge of the constriction outlet portion 7 is not sealed and the opening 11 is formed.
In addition, the two self-supporting bags each having the top seal 10 on the edge of the shoulder portion 8 can be turned at 180 degrees with respect to each other to be manufactured at once. Note that FIG.
In the above, by exchanging the bent heater 24 for top seal and the bent cutter 25, the self-supporting bag shown in FIG. 4 can be manufactured.

Next, a third embodiment of the self-supporting bag of the first invention of the present application will be described with reference to FIG. In the self-supporting bag according to this embodiment, as in FIG. 1, the films constituting the bag front surface portion 1, the bag rear surface portion 2 and the bottom gusset 3 are superposed, and the bottom seals 4, 4 and the side seals 5, 5 are formed. It has been subjected.
In the original portion of this embodiment, the contour of the upper edge of the bag is formed by the contour line 6 having the midpoint 6a as point symmetry, and the constriction outlet portion 7 is formed.
And a shoulder portion 8 are provided. Two narrow zipper strips 9a and 9b are provided in the constriction outlet portion 7 at equal intervals in the vertical direction with the midpoint 6a interposed therebetween, and the top seal 10 is provided near the outer edge of the upper zipper strip 9a. The edge of the shoulder 8 is not bonded and is secured as an opening 11 for filling the contents. The difference from the self-supporting bag of FIG. 1 is that two zipper strips are provided. For this reason,
The dimension from the constriction outlet 7 to the shoulder 8 is large. This self-supporting bag sucks both sides of the shoulder 8 and separates them to open the opening 11 and fill the contents. Zipper strip 9
You don't have to open a and 9b. After filling the contents, the opening 11 is closed and the top seal 10 is applied to the edge thereof. As the easy-opening means, as in the self-supporting bag shown in FIG.
And notches 13 are provided at both ends or one side of the cut line 12. The zipper strips 9a, 9b can be opened, the necessary amount of contents can be taken out, and the zipper strips 9a, 9b can be closed again. Since it has two zipper strips, it has a higher sealing performance than a single zipper strip. FIG. 7: shows the bag manufacturing method of the self-supporting bag of FIG. Compared with the bag-making method of the self-supporting bag shown in FIG. 1,
The difference is that there are two zipper strips instead of one. In addition, in FIG. 3, the self-supporting bag shown in FIG. 6 can be manufactured by replacing the bent heater 24 for top seal and the bent cutter 25.

A fourth embodiment of the self-supporting bag of the first invention of the present application will be described with reference to FIG. In the self-supporting bag according to this embodiment, as in FIG. 1, the films constituting the bag front surface portion 1, the bag rear surface portion 2 and the bottom gusset 3 are superposed, and the bottom seals 4, 4 and the side seals 5, 5 are formed. It has been subjected. In the original part of this embodiment, the contour of the upper edge of the bag is formed by a contour line 6 having point symmetry with respect to the midpoint 6a to form a stenosis outlet portion 7 and a shoulder portion 8. The stenosis outlet portion 7 has a midpoint. Two zipper strips 9a, 9b are provided equidistantly on both sides of 6a,
The top seal 10 is applied to the edge of the shoulder 8 formed by the contour half 6c, and the end of the stenosis outlet portion 7 formed by the contour half 6b outside the zipper strip 9 is not adhered. This is a point that is ensured as an opening 11 for filling an object. The self-supporting bag also opens the zipper strips 9a, 9b when filling the contents. After filling the contents,
A top seal is applied to the edge of the constriction outlet 7. Similar to the self-supporting bag of FIG. 1, as the easy-opening means, the cut line 12 is provided, and the notch 13 is provided at both ends or one side of the cut line 12. Unzip and zipper strip 9
The zipper strips 9a and 9b can be closed again by opening the a and 9b and taking out a necessary amount of the contents. Highly sealed compared to a single strip of zipper strip. FIG. 9: shows the bag-making method of the self-supporting bag of FIG. It differs from the bag-making method for a self-supporting bag shown in FIG. 4 in that the zipper strip has two strips instead of one strip. In FIG. 3, the self-standing bag shown in FIG. 8 can be manufactured by replacing the bent heater 24 for top seal and the bent cutter 25.

A fifth embodiment of the self-supporting bag of the first invention of the present application will be described with reference to FIGS. 10 (a) and 10 (b). FIG. 10 (a) is a front view of the self-supporting bag before the contents are filled, and FIG. 10 (b) is a view of the sealing seal for the opening after the contents are filled. The self-supporting bag according to this embodiment is similar to FIG.
Films forming the bag front surface portion 1, the bag rear surface portion 2 and the bottom gusset 3 are overlapped, and bottom seals 4 and 4 and side seals 5 and 5 are provided. In the original part of this embodiment, the contour of the upper edge of the bag is formed by the contour line 6 of a substantially S curve with the midpoint 6a as point symmetry to form a stenosis outlet portion 7 and a shoulder portion 8. Is provided with a single zipper strip 9, and a top seal 10 is provided in the vicinity of the outer edge of the zipper strip 9, and the edge of the shoulder 8 is not adhered and is secured as an opening 11 for filling the contents. That is the point.
As shown in this embodiment, the curved contour line 6 may be any contour line having the midpoint 6a as point symmetry. This is because when the bag manufacturing method as shown in FIG. 2 is adopted, the cut pieces of the film are not discharged. The invention of the present application does not exclude a corner cut or a side piece at the center of the bag width of the stenosis outlet 7. After filling the contents, as shown in FIG. 10 (b), a sealing seal 10a is applied to the opening. Figure 11
Shows a method for making the self-supporting bag of FIG. Compared to the self-supporting bag manufacturing method shown in Fig. 1, a seal that divides the bag into left and right
The shape of the cut is different. In this embodiment, a small hole 27 for hanging and displaying can be provided by punching the zipper strip 9 near the center of the bag width. This bag making method is the same as that shown in FIG. The difference lies in the contour line 6 of the substantially S curve, and therefore the curved heat seal of the substantially S curve and the curved cut of the substantially S curve are different. In addition, in FIG. 3, the self-supporting bag shown in FIG. 10 can be manufactured by exchanging the bent heater 24 for top seal and the bent cutter 25.

Items common to the first to fifth embodiments of the self-supporting bag of the first invention of the present application will be further described. The film used for manufacturing the self-supporting bag of the present invention is not particularly limited, and any known laminated film used for pouches for packaging contents such as liquid can be used, and contents to be filled. It is possible to freely select and use a suitable material according to usage conditions such as the type of material and the presence or absence of heat treatment after filling. For the self-supporting bag of the present invention, a laminated film mainly containing plastic is used, and typical examples of the constitution thereof include the following. (1) O-PA 12 μm / adhesive / LLPDE 20 μm (2) O-PA 12 μm / adhesive / uniaxially stretched or biaxially stretched HDPE
20μm / adhesive / LLPDE 20μm (3) O-PA 12μm / adhesive / uniaxially stretched or biaxially stretched PP20
μm / Adhesive / LLPDE 20μm (4) O-PA 12μm / Adhesive / Uniaxially stretched or Biaxially stretched PP20
μm / Adhesive / AL / Adhesive / LLPDE 20 μm (5) PET ・ SiOx or PET-AL 12 μm / Adhesive / Uniaxially stretched or biaxially stretched HDPE film / Adhesive / LLPDE 20 μm (6) O-PA 12 μm / Anchor coat Layer / HDPE: Coextrusion coating layer / L
LPDE 20 μm (7) O-PA 12 μm / Anchor coat layer / Co-extrusion coat layer (HDPE layer / LDPE layer) / Adhesive / LLPDE 20 μm (8) PET 12 μm / Adhesive / AL 19 μm / Adhesive / O-PA 12 μ
m / Adhesive / LLPDE 20μm (9) PET 12μm / Adhesive / AL 19μm / Adhesive / O-PA 12μ
m / Adhesive / CPP 60μm (10) PET 12μm / Adhesive / O-PA 12μm / Adhesive / AL 19μ
m / Adhesive / LLPDE 20μm (11) PET 12μm / Adhesive / O-PA 12μm / Adhesive / AL 19μ
m / Adhesive / CPP 60μm (12) PET 12μm / Adhesive / EVOH 20μm / Adhesive / O-PET 1
2μm / adhesive / CPP 60μm (13) LDPE 5μm / adhesive / OPP 20μm / adhesive / LDPE 5μ
m ・ ・ ・ ・ (outer layer / intermediate layer / inner layer ** co-press film) (14) Paper / adhesive / LLPDE 50 μm ・ ・ ・ ・ (outer layer / inner layer) (15) PET 12 μm / adhesive / LLPDE 20 μm ・ ・・ ・ (Outer layer / Inner layer) (16) AL 19μm / Adhesive / LLPDE 70μm ・ ・ ・ ・ (Outer layer / Inner layer) (17) PET ・ SiOx 12μm / Adhesive / LLPDE 100μm ・ ・ ・ ・ (Outer layer / Inner layer) ( 18) PET ・ SiOx 12μm / Adhesive / CPP 60μm ・ ・ ・ ・ (Outer layer / Inner layer) (19) O-PA ・ SiOx 15μm / Adhesive / LLPDE 80μm ・ ・ ・ ・ (Outer layer / Inner layer) (20) OPP 20μm / Adhesive / EVOH 20 μm / Adhesive / LLPPE 5
0μm ・ ・ ・ ・ (Outer layer / Intermediate layer / Inner layer) (21) OPP 20μm / Adhesive / PET ・ SiOx 12μm / Adhesive / LL
PDE 50μm ・ ・ ・ ・ (Outer layer / Intermediate layer / Inner layer) (22) O-PET 12μm / Adhesive / AL 19μm / Adhesive / LLPDE 7
0μm ・ ・ ・ ・ (Outer layer / Intermediate layer / Inner layer) (23) PT # 300 (approx. 20μm) / Adhesive / Paper / Adhesive / LDPE 20
μm ・ ・ ・ ・ (Outer layer / Intermediate layer / Intermediate layer / Intermediate layer / Inner layer) (24) Paper / LDPE 20 μm / Adhesive / AL 19 μm / Adhesive / LLPD
E 50 μm, etc. (outer layer / intermediate layer / intermediate layer / inner layer), but not limited thereto, and various combinations of laminated films can be used. Further, depending on the use of the bag, thin paper can be laminated on the intermediate layer such as the inside of the base film on the surface of the laminated film. In that case, since the whiteness is increased by the paper, the printing effect is improved and the designability can be improved. In addition, when the bag is provided with the above-mentioned ruled lines, it becomes easier to add folding habits, and the effect of the ruled lines can be further enhanced. Each of the above tops can be back-printed on the inside with an exterior, except for paper.

In the above constitution, O-PET is a biaxially stretched polyethylene terephthalate film, PET is a biaxially stretched polyethylene terephthalate film, E
VOH is saponified ethylene-vinyl acetate copolymer, PET-SiOx is silica-deposited PET, PET-AL is alumina-deposited PET, O-PA is biaxially stretched polyamid film, O-PA / SiOx is silica-deposited polyamid film, PT Is regenerated cellulose film, AL is aluminum foil, LLDPE is linear low density polyethylene, HDP
E is high-density polyethylene, LDPE is low-density polyethylene, PP film is polypropylene film, OPP is biaxially oriented polypropylene film, CPP
Indicates an unstretched polypropylene film. Anchor coat is a kind of primer coat that is pre-coated on the base material film side in order to improve adhesiveness when laminating resin by extrusion coating.

In the above-mentioned laminated film structure, the ON film and PET 12M are used as the base film to impart mechanical strength and printability to the bag, and the uniaxially stretched HDPE film and the uniaxially stretched PP film for the intermediate layer are stretched. By using the direction so as to coincide with the tearing direction when opening the bag, the directionality of the tearing can be further stabilized. Incidentally, when joining a spout made of a plastic molded body to the spout, since it is not necessary to tear the film to open, instead of the uniaxially stretched film, a biaxially stretched HDPE film or a biaxially stretched PP film. Can be used. By laminating a biaxially stretched HDPE film or a biaxially stretched PP film on the intermediate layer, the thickness of the laminated film can be increased, the rigidity and mechanical strength can be improved, and the water vapor transmission rate can be reduced. Further, AL, silica or alumina vapor-deposited layer, EVOH film and the like are laminated in order to impart gas barrier property.

As a sealant layer, the LLDPE film is excellent in heat seal stability and content resistance, for example, stress cracking resistance against a surfactant,
P film has excellent heat resistance and low odor, and is suitable for packaging contents that require these properties. In addition, ethylene / α-olefin copolymers, ethylene / vinyl acetate copolymers, ethylene / acrylic acid copolymers, ethylene / acrylic acid ester copolymers, ionomers, polyester resins, depending on the contents to be filled. And the like can be appropriately selected and used.

The fourth invention of the present application is to open the opening of the self-supporting bag or the self-supporting bag manufactured by the method for manufacturing a self-supporting bag described above to fill the contents and close the opening to close the top seal. Intended for self-supporting bag packaging. This self-supporting bag package has the advantages that the self-supporting bag has.

The present invention has the advantages of the pouch described in, for example, Japanese Patent Laid-Open No. 2001-158438. To quote, it has excellent processability and storability of contents, is lightweight, not bulky, and is inexpensive, and its disadvantages are the opening property of the spout and its shape retention property, and the contents. In addition to improving the safety and ease of transfer, it is also self-supporting, easy to handle, smart in appearance like a shape-retaining container such as a bottle, and self-supporting with an excellent display effect in stores. Providing bags with high productivity. The bag filled with contents is self-supporting and easy to handle, and its main body is tubular due to the lower gusset part, so it is compact for its capacity and has a smart appearance. The display effect at the store is also excellent. In addition, when transferring the contents to another container, for example, by cutting off a part of the protruding portion to open the bag and tilting the opening toward the mouth of the container, Flowing toward the opening of the film, and the internal pressure of the film causes the film to spread to the outside, improving the shape retention of the opening and avoiding blockage during pouring.
The contents can be safely and easily transferred to the end. It is easy to fill the contents, and the bag after filling has a three-dimensional shape such as an elliptic cylinder, a square cylinder, and a hexagonal cylinder, which is excellent in self-supporting property, shape stability, and appearance, and is compact for its capacity. It is easy to handle, can save packaging material, and can easily open the spout when using it.
Due to the internal pressure of the contents, the spout will naturally open with good shape retention, and the spout will not be blocked during pouring, and it is safe to transfer the contents to other containers. In addition to the suitability for use, it is possible to provide a self-supporting bag having excellent appearance such as a display effect in a store with high productivity.

[0031]

The self-supporting bag, the bag-making method, and the package of the self-supporting bag according to the present invention have the following advantageous effects as compared with the prior art. (1) Even if a zipper strip is provided at the narrowing outlet of half the bag width, it can be continuously stuck to the film in the running direction without interrupting the zipper strip, and it can be attached to one side of the upper part of the bag. The stenosis spout with zipper strip can be used to continuously manufacture self-supporting bags in two rows with the direction turned 180 degrees, resulting in extremely high bag-making capacity and keeping bag-making costs extremely low. Can be done. (2) Rather than connecting a self-supporting bag with a stenosis outlet having a zipper strip on one side of the upper part of the bag, and separately connecting a stenosis outlet having a zipper strip, and connecting the cut piece of the film and the zipper strip. The film can be formed into an integrally extended bag without producing cut pieces and without securing a dead space, and the film is not wasted in the packaging form that enables the fastest packaging. Therefore, the bag manufacturing cost can be kept extremely low. (3) Since one side of the stenosis spout is located at an extended position on one side of the full-width part of the bag, the shape retention of the opening is good when the zipper strip is opened by cutting the upper end of the stenosis spout, and the zipper strip When both ends of the zipper are pressed, the zipper strip is curved and the opening is large, so that an appropriate amount of contents can be taken out satisfactorily. When the entire amount is not used up, the zipper strip may be closed again, which is suitable as a refill bag. (4) Since the curved contour line on the upper edge of the bag may be a point object with respect to the midpoint, the front shape of the bag can be selected in various shapes, and the design desired for each customer can be selected.

[Brief description of drawings]

FIG. 1A is a front view of a self-supporting bag according to a first embodiment of the first invention of the present application, and FIG. 1B is a perspective view during filling of contents.

FIG. 2 relates to a method for manufacturing a self-supporting bag according to the second invention of the present application,
The front view which shows the manufacturing method of the self-supporting bag of FIG.

FIG. 3 is a plan view showing a method of manufacturing the self-supporting bag of FIG. 1 according to a method of manufacturing the self-supporting bag according to the embodiment of the third invention of the present application.

FIG. 4 (a) is a front view of a self-supporting bag according to a second embodiment of the first invention of the present application, and FIG. 4 (b) is a perspective view during filling with contents.

FIG. 5 relates to a method for manufacturing a self-supporting bag according to the second invention of the present application,
The front view which shows the manufacturing method of the self-supporting bag of FIG.

FIG. 6 is a front view of a self-supporting bag according to a third embodiment of the first invention of the present application.

FIG. 7 relates to a method for manufacturing a self-supporting bag according to the second invention of the present application,
The front view which shows the manufacturing method of the self-supporting bag of FIG.

FIG. 8 is a front view of a self-supporting bag according to a fourth embodiment of the first invention of the present application.

FIG. 9 relates to a method for manufacturing a self-supporting bag according to the second invention of the present application,
The front view which shows the manufacturing method of the self-supporting bag of FIG.

FIG. 10 relates to a self-supporting bag according to a fifth embodiment of the first invention of the present application, (a) is a front view of the self-supporting bag before filling the contents, and (b) is filling the contents. The figure which looked at the sealing sticker with respect to the opening after doing is shown.

FIG. 11 is a front view showing the method for manufacturing the self-supporting bag of FIG. 10 (a) according to the method for manufacturing the self-supporting bag of the second invention of the present application.

[Explanation of symbols]

1 ... bag front part, 2 ... bag rear part, 3 ... bottom gusset, 4 ... bottom seal, 5 ... side seal,
6 ... bending contour line, 6a ... midpoint of line length, 6b, 6c.
..Half portion of contour line, 7 ... exit portion of stenosis, 8 ... shoulder portion,
9, 9a, 9b, 9A, 9B ... Zipper strips, 10.
..Top seals, 10a ... sealing seals, 11 ...
・ Opening, 12 ・ ・ ・ Half-cut score line, 13 ・ ・
・ Notch, 14a, 14b ... Zipper crush seal, 15
... Semi-circle cut, 16 ... Small hole, F1, F2 ... Continuous film, F3, F4 ... Continuous folded film, 17a, 17b ... Film feed roll, 18a, 1
8b ... sandwiching plate, 19 ... heat sealer, 20a,
20b ... Bottom seal heater, 21 ... Side seal heater, 22a, 22b ... Zipper crushing heater, 23a, 23b ... Press die cut, 24
... Bending heater for top seal, 25 ... Bending cutter for forming upper edge of bag, 26 ... End cutter,
27 ... small holes,

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B31B 37/64 B31B 37/64 37/90 37/90 B65D 33/00 B65D 33/00 C 33/25 33 / 25 A

Claims (4)

[Claims] 1. A bag is provided with side seals on both side edges of a bag front portion and a bag rear surface portion, and a bottom gusset is provided between a lower portion of the bag front portion and a bag rear surface portion, and a bottom gusset, a bag front portion, a bottom gusset and a bag rear portion. A bottom seal is added to the lower edge of the surface to provide self-supporting properties, and the upper edge of the bag has a curved contour line that is point-symmetric with respect to the midpoint of the line length, and one half of the contour line is overhanging. The stenosis outlet is formed, and the remaining half of the contour line forms a shoulder. The stenosis outlet and the shoulder are provided with top seals and openings distributed on the inner surface of the stenosis outlet. The self-supporting bag is characterized in that one zipper strip is welded at a height corresponding to the midpoint, or two zipper strips are welded at equal distances above and below the midpoint. 2. A pair of films having a required width for forming a bag front surface and a bag rear surface are overlapped with each other, and one or two zipper strips are sandwiched in the width center between the two films,
Further, a double-folded film for forming a bottom gusset is sandwiched between both side edges of the two films, and the webs on both sides of the zipper strip are welded to the inner surface of the film on each side, and the bottom seal and the side seal are also attached. As a closed flat bag with a bottom gusset on both sides and a zipper strip in the center, a curved top seal is applied in the middle of the closed flat bag and the closed flat bag is divided into two and the zipper strip is divided into two. By making a curved cut, the upper part of each bag is a stenosis outlet part with an overhanging shape and a zipper attached, and the other one part is a shoulder part with a bottom gusset and the stenosis. A bag-making method for a self-supporting bag, characterized in that two self-supporting bags provided by distributing a top seal and an opening on the outlet portion and the shoulder portion are turned at 180 degrees with respect to each other to make a bag at once. 3. A continuous zipper strip having a required width for forming a front surface portion of the bag and a rear surface portion of the bag is superposed, and a continuous zipper strip is sandwiched in the width center between the two films, and , A continuous bi-fold film for forming a bottom gusset is sandwiched between both side edges of the two films, and the film is transferred in this state, and the webs on both sides of the zipper strip are attached to the inner surfaces of the films on each side. A continuous sealed flat bag with a bottom gusset on both sides and a zipper strip in the center, and then side sealed at a bag width pitch. In the middle of the width direction, apply a bent top seal so that both ends are connected to one side seal and the next side seal, and the zipper strips are crossed. By cutting the bent contour line that bisects the bent top seal and the zipper strip in the middle, and cutting the center of the seal width of the side seal, one side of the upper part of each bag has an overhang shape and the zipper is Two self-supporting bags, which are attached stenosis outlets and the other one side part is a shoulder, have a bottom gusset and have a top seal and an opening distributed in the stenosis outlets and shoulders, facing each other 180 degrees A method for making a self-supporting bag, which is characterized in that the changed bag is continuously made in two rows. 4. The contents of the self-supporting bag according to [claim 1] or the self-supporting bag manufactured by the bag manufacturing method according to [claim 2] or [claim 3] with an opening. The self-supporting bag package is characterized in that it is filled with, and the opening is closed and top-sealed.