JP2006213366A - Packaging bag and packaging body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag and a packaging body which are equipped with a male-type hook-and-loop fastener easily openable and having a surely resealable function, is suitable for packaging an object to be packaged which is taken out bit by bit and can be stored by being re-sealed when there exists a residual quantity, and is suitable for packaging a food to be heated by a microwave oven. <P>SOLUTION: The packaging bag comprises a bag body having an opening to store an object to be packaged, and a hook-and-loop fastener mounted in a fitted condition or a fit-opposing condition on both inner surface sides along an opening end at an upper end to be opened to take out the object to be packaged in the bag body. The hook-and-loop fastener consists of a base part and hook-like engaging elements projecting in a multiple row-like state from the surface of the base part, and the back surface of the base part is directly stuck to the inner face on both sides of the bag body. It is a male-type hook-and-loop fastener in which one hook-like engaging element is inserted into a gap between the other hook-like engaging elements and can be engaged so as to escape therefrom. The object to be packaged is stored in the packaging bag and the opening thereof is heat-sealed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a packaging bag and a packaging body provided with a planar fastener as a resealing means.

Conventionally, there are almost no examples in which planar fasteners are employed in packages using soft packaging materials (laminated plastic films). Conventionally, planar fasteners are used for bags, shoes, clothes, diapers, and various bands.
Conventionally, the packaging bag and package which have a reseal function are provided with the zipper.
JP 11-147542 A

  The packaging bag and package provided with a zipper as a reseal means have a problem that it takes time to open and difficult to open, and it takes time to reseal.

The present invention is provided with a surface fastener that is easy to open and close and that can be resealed reliably, and is suitable for packaging a packaged product that is scheduled to be resealed many times. An object is to provide a packaging bag and a package that can be taken out and the remaining amount can be closed by resealing the surface fastener.
When the present invention is applied to microwave heated food packaging, it is necessary to open the outside of the surface fastener, but the pressure heating inside the bag is in an extreme state without opening the surface fastener. An object of the present invention is to provide a packaging bag and a packaging body having a pressure pressurizing function, in which the heated steam in the bag sometimes escapes well from the gap between the planar fasteners to the outside of the bag to prevent the bag from bursting.

The packaging bag according to claim 1 is fitted on both sides of the bag body having an opening for accommodating an article to be packaged, and the inner surface along the opening end of the upper end which is opened to take out the article to be packaged of the bag body. Having a surface fastener attached in a state or mating facing state,
The planar fastener is composed of a base portion and hook-like engaging elements that protrude in multiple rows from the surface of the base portion, and the back surface of the base portion is bonded to the inner surfaces on both sides of the bag body. The male engaging element is a male surface fastener that can be inserted into the gap between the other hook-like engaging elements and can be removably engaged.
In the above-described configuration, the bag body has an opening for accommodating an article to be packaged. This opening usually coincides with the opening end that is cut open to remove the package from the bag body. However, in the bag provided with the resealing means, the opening end that is cut open to take out the packaged article coincides with the upper end of the bag, and the resealing means is provided along the opening end to accommodate the packaged article. Is often provided at the lower end of the bag. Moreover, providing the opening for accommodating a to-be-packaged object in a bag side end is also performed. Therefore, in the present invention, in order to include all of these forms, the terms “opening for accommodating the packaged object” and “opening end of the upper end cut open for removing the packaged object” are used. A case where a matching portion of the bag body is shown and a case where a matching portion is shown are included.
The bag body of the present invention includes a three-sided bag, a four-sided bag, a bag with a stand pouch and other bottom gussets, a stand pack bag having a side gusset and a square bottom, and a stand pack having a bottom gusset and a side gusset. Various bags such as a pillow packaging bag made by a bag making machine, a stand-pack type pillow packaging bag, a bag with a header attached to the upper portion of a side gusseted bag, and a bag having an oblique opening are included.
There are various ways of attaching the surface fastener to the bag body, which are specified in claims 2 to 6.
According to a second aspect of the present invention, in the packaging bag according to the first aspect, the planar fastener makes a round along the opening end that is opened to take out the back of the base body from the back of the base portion. Attached to the inner surface of the bag body,
The hook-like engagement element on one inner surface side and the hook-like engagement element on the other inner surface side face each other without being fitted, or the hook-like engagement element on one inner surface side is on the other inner surface side. It fits in the clearance gap between hook-shaped engagement elements, It is characterized by the above-mentioned.
According to a third aspect of the present invention, in the packaging bag of the first aspect, the planar fastener has a hook-like engagement between one pair of the planar fasteners having a length substantially equal to the bag width. The element is fitted in the gap between the hook-like engagement elements on the other inner surface side, and the back surfaces of the base portions on both sides are bonded to the inner surface of the bag body.
According to a fourth aspect of the present invention, in the packaging bag according to the first aspect, the planar fastener has a pair of planar fasteners having a length substantially equal to the bag width, and hook-like engagement on one inner surface side. The element is fitted in the gap between the hook-like engagement elements on the other inner surface side, only the back surface of one base portion is bonded to the inner surface of the bag body, and the back surface of the other base portion is not bonded, The back surface of the other base portion is bonded to the inner surface of the bag body at the same time as the bag opening is closed and bonded after the article to be packaged is accommodated in the bag body.
According to a fifth aspect of the present invention, in the packaging bag according to any one of the first to fourth aspects, the planar fastener is a part of the width direction near the opening end of the back surface of the base portion on each side. It is bonded to the inner surface of the main body and the remaining portion is not bonded.
The invention according to claim 6 is the packaging bag according to any one of claims 2 to 4, wherein the planar fastener is an inner surface of the bag body via a film flange that is bonded in advance to the back surface of the base portion. It is characterized by being adhered to.
A packaging body according to a seventh aspect is characterized in that an article to be packaged is accommodated in the packaging bag according to any one of the first to sixth aspects and the opening is heat-sealed.

The first invention of the present application has a male surface fastener that can be easily opened and closed on both sides of the inner surface along the opening end of the upper end that is cut open to take out the package body of the bag body, and can be re-sealed with certainty. Since it is a structure, the reseal function is smooth and excellent. That is, it is easy to re-seal the pair of mating surface fasteners in which the hook-like engagement elements are fitted in the gaps between the hook-like engagement elements once and then close. Take out in quantity and reseal the remaining amount. And since the hook-shaped engagement element of the male surface fastener is forested and divided, when the fastener is opened, the engagement element is shifted to the left and right and back to avoid self-damage and maintain a good resealing function. And is suitable for powder packaging. Furthermore, the present invention uses a male surface fastener in which hook-like engagement elements are erected / divided as the resealing means, so that the strength in the surface-surface is strong and the peel strength in the portion-part is high. It is weak and can be opened with weak force because it peels a little at a time when it opens.
The packaging bag and package of the present invention have a fitting seal strength that prevents air bag breakage by ensuring air permeability against an increase in internal pressure while the male surface fastener has self-fitting and sealing properties. Therefore, it is suitable for packaging of microwave oven heated packages. That is, when the pillow package of the present invention is applied to the packaging of microwave oven heated articles, a very small and complicated gap where the planar fastener communicates from the inside to the outside of the bag is fitted. Since it is sometimes formed, when cooking by cooking electronically cooked food, it is necessary to open the outside of the surface fastener, but even if the surface fastener is not opened, the pressure overheating in the bag is in an extreme state When heated, the heated steam inside the bag escapes well from the gap between the surface fasteners to the outside of the bag and prevents the bag from rupturing, and has a pressure-pressing function. When there is a quantity, the surface fastener can be resealed and finished.
The packaging bag and package of the present invention have a male-male fitting (hook-hook fitting) with a male surface fastener as the resealing means, and a chip of a loop generated when the male-female fitting is used. However, there is no problem that the food remains in the bag and falls on the processed food which is the packaged food.
Hereinafter, the effect which the packaging bag of this invention and the package body are excellent is demonstrated compared with the bag with a zipper which is the conventional packaging bag.
(1) The packaging bag of the present invention has a hook-like engagement element between the hook-like engagement elements when an opening for accommodating an article to be packaged is at the upper end of the bag when packaging with a bag-filling and packaging machine. It is easy to reseal the pair of planar fasteners fitted in the gap once they are opened, so the planar fastener is opened with the planar fastener at the top and the package is filled to close the planar fastener. It is possible to top seal the upper side of the lever. And since the hook-shaped engagement element of a planar fastener is forested and divided | segmented, when opening a fastener, an engagement element slip | deviates to the left and right and back, a self-damage can be avoided, and a favorable reseal function can be maintained.
On the other hand, in the case of a bag with a zipper, when packaging with a bag-feeding filling and packaging machine, when the opening for accommodating an article to be packaged is at the upper end of the bag, the closed zipper is forcibly opened so that a continuous hook A part of the engaging element is easily damaged, and the bag is often turned upside down. That is, the zipper is positioned on the lower side, the bag bottom is on the upper side, the zipper is opened, the package is filled into the bag, the zipper is closed, the upper side is bottom sealed, and finally the top and bottom of the bag is repaired. Become.
(2) The package of the present invention has a fitting seal strength that prevents air bag breakage by ensuring air permeability against an increase in internal pressure while the male surface fastener has self-fitting and sealing properties. Therefore, it is suitable for packaging of microwave oven heated packages. That is, when the packaging body of the present invention is applied to packaging of microwave oven heated packaging, the upper side along the pair of planar fasteners of the bag body is cut open and the pair of planar fasteners is closed. When heated in a microwave oven, the superheated steam can escape through the pair of planar fasteners when the package becomes hot and high pressure, avoiding bag breakage, and heating by the microwave oven is safe It can be done.
On the other hand, a bag with a zipper is not suitable for packaging a microwave-heated package because it has a temporary sealing property and does not have air permeability. If a zippered bag is to be applied to a microwave heated package, the zipper must be open to avoid breaking the bag due to increased internal pressure. It becomes the same as the heating state.
The invention according to claim 2 is applied to a bag having no side seal because the planar fastener is attached to the inner surface around the open end that is cut open to take out the package body of the bag body. The opening can be greatly widened to take out the package. As a typical example, when this structure is applied to the upper part of a bag which is connected to both ends of a single packaging material so as to form a back-sealed seal, and further folds side gussets on both sides to form a bottom seal, When the upper side of the fastener is cut open and the article to be packaged is taken out, the planar fastener can be expanded to a square in accordance with the square cylinder of the bag, and even a large cubic article to be packaged can be easily taken out.
On the other hand, in a bag with a side gusset with a zipper, the zipper cannot be expanded in a square shape, so that a large cube-shaped package cannot be taken out.
The invention according to claim 3 is suitable as a means for resealing a packaging bag having a side seal because the pair of planar fasteners having a length substantially equal to the bag width is adhered to the inner surface of the bag body.
This configuration proposes a general method of attaching the surface fastener to the bag body.
According to a fourth aspect of the present invention, there is provided a packaging bag in which both the opening for accommodating the packaged object and the opening end opened for taking out the packaged object coincide with each other at the upper end of the bag body. This is advantageous because the pair of planar fasteners can be kept fitted before and after being accommodated without unsealing and resealing. Further, it is advantageous in that it can be avoided that the granular material enters the gap between the hook-like engaging elements and cannot be resealed when the package is a granular material such as sugar or salt.
The invention according to claim 5 is characterized in that a male surface fastener is adopted as a resealing means for resealing the bag body and the opening end that is cut open to take out the packaged body of the bag body. In addition, since a part of the width direction near the opening end of the back surface of the base part of the male surface fastener is further bonded to the inner surface of the bag body, and the remaining part is not bonded,
When the outside of the surface fastener is opened and the bag is turned upside down, the object to be packaged approaches the surface fastener due to the gravitational action, and the front and rear portions of the bag body are opened perpendicularly to the surface fastener. Try to unmating the zipper, but part of the back surface of the base part of the male surface zipper near the opening end is bonded to the inner surface of the bag body and the rest is unbonded Therefore, the force to unmating the planar fastener acts as a tensile load at the center in the width direction, not at the inner end in the width direction of the base part of the surface fastener, and is distributed over the entire base part. A large force is required to unseat the planar fastener because it tries to resist the force of pulling it apart vertically. On the other hand, when cutting the outer end side of the surface fastener and grasping the pair of opening ends to release the engagement of the opening surface fastener, the force to release the fitting is the center in the width direction of the base portion of the surface fastener. Since the force acts on the edge of the opening instead of the base and there is no force distribution at the base, the surface fastener can be unmated with a force much smaller than the force required to unmating the surface fastener from the vertical direction. Can do.
Therefore, it is easy to close because it is characterized in that a part in the width direction near the opening end of the back surface of the base part of the male surface fastener is bonded to the inner surface of the bag body and the remaining part is not bonded. Therefore, it is suitable for packaging an article to be packaged that can be reliably resealed, easily opened from the outside, difficult to open from the inside, and unintentionally opened.
In the invention described in claim 6, since the sheet-like fastener is bonded to the inner surface of the bag body through the film flange, the film flange is configured to form the packaging bag by strongly closing the pair of heat sealers and pressurizing them at a high temperature. It is possible to heat seal the inner surface of the sheet fastener at a high temperature, and the certainty of the attachment of the planar fastener is ensured. In addition, since the certainty of the attachment of the surface fastener is ensured, in the case where the surface fastener is attached to the film for forming the packaging bag, the film is then folded on the former, and the bag is made. It is avoided that the zipper is caught on the former and falls off.
The package of the seventh invention of the present application has the same effects as the first to sixth inventions of the present application.
The present invention includes a packaging bag and a packaging body in which a planar fastener is bonded to the inner surface of a bag body without a film flange.

<< First Embodiment >>
A first embodiment of the packaging bag and package of the present invention will be described with reference to FIGS. 1 (a), (b), and (c).
As shown in FIG. 1 (a), the packaging bag P1 has a bag main body 1 that is a three-side sealed bag whose lower end is an opening for storing an object to be packaged, and an inner upper portion of the bag main body 1. It has a planar fastener 2 for sealing.
The bag body 1 is made of a wrapping material having an inner surface heat-sealing property, and both side edges, which are about 1/4 of the width of the wrapping material, are folded 180 degrees and the inner surfaces are joined at the center of the bag width to form a palm portion After the back-sealed heat seal 1h is applied, it is bent so as to be in close contact with the back surface of the bag, and the top heat seal 1e is applied to the upper end.
For mass production of the bag body 1, a continuous packaging material having an inner surface heat-sealing property is hung on a former, the inner surfaces of both ends of the continuous packaging material are closed in a palm shape, and a back-sealed sheet seal is applied to form a continuous cylinder. As a flat cylinder, a lateral seal is applied so as to be perpendicular to the continuous direction of the continuous flat cylinder at a bag length pitch, and a bag is produced by cutting at the lateral seal.
As shown in FIG. 1 (a), the planar fastener 2 is a male type having a self-fitting function comprising a base portion 2a and hook-like engagement elements 2b projecting in multiple rows from the surface of the base portion. Resealing function that is a planar fastener, and the back surface portion of the base portion 2a is bonded to the inner surface of the bag so that the hook-like engagement elements on one side can be removably fitted into the gaps between the hook-like engagement elements on the other side. Have
In this embodiment, the planar fastener 2 is bonded to the inner surface of the bag body 1 via a film flange 3 bonded to the back surface side of the base portion 2a. The film flange 3 is a wide film extending upward and downward from the base portion 2a, and the portion extending upward and the portion extending downward from the film flange 3 are included in the bag body 1. It is preferable that the inner surface of the material is overlapped and pinched by a pair of heat sealers and fixed by thermal bonding. However, it may be fixed by adhesion.
Since the planar fastener 2 is made of polypropylene or polyethylene and has heat sealing properties, the film flange 3 and the back surface of the base portion 2a can be fixed by thermal bonding. However, the film flange 3 and the back surface of the base portion 2a may be fixed by adhesion.
The planar fastener 2 includes an attaching method shown in FIG. 1B and an attaching method shown in FIG.
The attachment method shown in FIG. 1 (b) is a state in which the sheet fastener is closed after being attached in a state in which the planar fastener is circled around the inner surface of the bag body 1. In the bag making process, the film flange 3 is bonded to the back surface side of the base portion 2a of the planar fastener 2 in advance. And it is the part extended to the upper side or the lower side of the base part 2a of the planar fastener 2, Comprising: The part which comes to the running direction downstream of the packaging material which comprises the bag main body 1 in a bag making process with respect to a packaging material A part that is temporarily heat-sealed, and that extends to the upper side or the lower side of the base part 2a of the planar fastener 2 on the downstream side, and constitutes the bag body 1 in the bag making process The part that comes upstream in the running direction of the material is heat-sealed to the packaging material. Thus, the planar fastener 2 is bonded to the inner surface of the bag body 1 through the film flange 3 bonded to the back side of the base portion 2a by two-stage heat sealing of temporary attachment and permanent attachment.
Next, the packaging material to which the planar fastener 2 is attached is bent into a cylindrical shape by the guide action of the former, the edges of the packaging material are joined together, and a back-sealing heat seal 1g is applied to form a flat cylinder. The planar fastener 2 that makes one turn is folded so that one hook-like engagement element is removably fitted into the gap between the other hook-like engagement elements to form resealing means. After that, the packaging material that has become a flat tube is cut off so that the top seal 1e is applied and the bag becomes a single bag.
The attachment method shown in FIG. 1C is formed by providing a pair of fitting surface fasteners on the inner surface of the bag body 1. That is, two male-male mating type (hook / hook mating type) planar fasteners cut to the width of the bag are fitted face to face in the center of the width of the packaging material. After the temporary bonding, both side portions of the packaging material are covered with a pair of mating surface fasteners to connect the edges to form a flat cylinder, and then the pair of mating surface fasteners are permanently bonded to the inner surface of the packaging material.
More specifically, one planar fastener is provided with a film flange 3a having a portion extending upward, and the other planar fastener is provided with a film flange 3b having portions extending upward and downward. Is provided. A pair of planar fasteners 2 and 2 provided with different film flanges 3a and 3b are fitted to each other, and a portion extending below the planar fastener 2 of the film flange 3b is bonded to the inner surface of the packaging material. Then, after the packaging material is bent into a cylindrical shape and a back-sealed heat seal 1g is applied to form a flat cylinder, the portions extending above the planar fastener 2 of the film flanges 3a and 3b are flattened with a pair of heat sealers. It is clamped from the outside of the tube and bonded to the inner surface of the packaging material by heat sealing. In order to prevent the portions of the film flanges 3a, 3b extending above the planar fastener 2 from being bonded to each other at the time of heat sealing, a release agent is applied in advance or the packaging material has a high heat sealing temperature. Laminate processing.
In the case of the attachment method shown in FIG. 1 (c), the bag body 1 may be configured by abutting both side edges of the packaging material without applying the back-sealing heat seal 1h and sticking the adhesive tape on the inner surface. . At this time, a pair of planar fasteners having a length that is half the width of the packaging material are temporarily bonded to the packaging material, both sides of the packaging material are covered with the planar fastener, the edges are abutted, and a patch tape is applied. Like that.
In this embodiment, the top seal 1e has drooping portions 1e ′ that approach the planar fastener 2 at both ends, and a notch 1f is provided in each drooping portion 1e ′. The notch 1 f is for cutting open between the top seal 1 e and the pair of planar fasteners 2 when taking out the package. It is preferable that a half cut is provided on the surface of the bag body 1 so as to connect the notches 1f and 1f.
The planar fastener 2 is not buckled even when a sealing force is applied to the projecting portion 2b, and the projecting portion 2b is not buckled because the projecting portion 2b is dispersed. Thus, the back surface of the base portion 2a can be directly heat sealed to the inner surface of the bag body 1. However, attaching a surface fastener via a film flange is much more advantageous in terms of mass productivity and reliable attachment at a time.
The packaging body using the packaging bag P1 is obtained by turning the packaging body P1 shown in FIG. 1 (a) upside down to open the bottom of the bag to store an object to be packaged (not shown) and applying a bottom seal 1g. .
In order to take out the package from the package using the packaging bag P1, the upper end of the bag is cut from one notch 1f to the other notch 1f, and then the planar fastener 2 is opened to obtain the necessary amount of the package. It can be taken out one by one, and if there is a remaining amount, the surface fastener 2 can be resealed and finished.
The bag body 1 is not a flat bag with a side seal but a pillow bag with a back-sealed seal, and the surface fastener 2 is attached around the inner circumference of the bag, so the bag opening is opened When the mesh fastener 2 is disengaged, it can be greatly opened into an elliptical or circular opening shape.

<< Second Embodiment >>
2nd Embodiment is described with reference to Fig.2 (a) about the packaging bag and package of this invention.
This packaging bag P2 has a bag body 1 which is a pillow bag whose upper end is an opening for storing an object to be packaged, and a planar fastener 2 bonded to the upper part of the inner surface of the bag body 1. . About the method of providing the planar fastener 2, when the planar fastener is provided around the inner surface upper portion of the bag body 1, and when a pair of fitting planar fasteners are provided on the inner surface upper portion of the bag body 1. The two types are the same as the bag body 1 of the packaging bag P1 shown in FIG.
The bag body 1 of the packaging bag P2 is formed in the same manner as the bag body 1 of the packaging bag P1 shown in FIG. 1A, except that a bottom heat seal 1g is applied instead of a top heat seal.
The planar fastener 2 attached to the packaging bag P2 is exactly the same as the planar fastener 2 shown in FIG. The planar fastener 2 of this embodiment is also bonded to the inner surface of the bag body 1 via the film flange 3.
The packaging body using the packaging bag P2 is obtained by opening the planar fastener 2 to store the packaged object and applying the top seal 1e. The top seal 1e can be provided in the same shape as the top seal 1e shown in FIG. 1A and can be provided with a notch 1f. The top seal 1e is applied after the packaged article is stored, but the planar fastener 2 may be closed or not.
Moreover, the handling at the time of taking out the package from the package using the packaging bag P2 is exactly the same as that of the packaging bag P1 shown in FIG.

<< Third Embodiment >>
A third embodiment of the present invention will be described with reference to FIG.
This packaging bag P3 has a bag main body 1 in the form of a stand pouch whose upper end is an opening for storing an object to be packaged, and a planar fastener 2 bonded to the upper part of the inner surface of the bag main body 1. Become.
The bag body 1 is different from a stand pouch having a normal side seal and having a bottom shape. The bag body 1 includes a flat tube portion 1a to which a back-sealed heat seal 1h is applied, and a bottom surface portion 1b that forms a bottom surface of a boat shape at a lower portion of the flat tube portion 1a. The bottom surface portion 1b is formed by, for example, folding a rectangular packaging material in two so that the fold line 1i comes up and overlapping the inner surface having heat sealability with the inner surface having heat sealability of the flat tube portion. It is formed by applying a heat seal 1j that is located at the lower part of the inner surface and can form a boat-shaped bottom.
The planar fastener 2 attached to the packaging bag P3 is exactly the same as the planar fastener 2 attached to the packaging bag P1 shown in FIG. That is, as to how to provide the planar fastener 2, a case where the planar fastener is provided around the inner surface of the bag body 1 and a pair of planar fasteners provided on the inner surface of the bag body 1 are provided. The fact that there are two cases is the same as the bag body 1 of the packaging bag P1 shown in FIG. And the planar fastener 2 of this embodiment is also the same as the planar fastener 2 shown in FIG.1 (b) on the inner surface of the bag main body 1 through the film flange 3 adhere | attached on the back surface side of the base part 2a. It is adhered to.
The packaging body using the packaging bag P3 has an opening, accommodates an article to be packaged, and is provided with a top seal 1e. The top seal 1e provided on the packaging bag P3 can be the same as the top seal 1e provided on the packaging bag P1 shown in FIG. A notch 1f can also be provided.
The handling at the time of taking out the package from the package using the packaging bag P3 is exactly the same as the packaging bag P1 shown in FIG.

<< 4th Embodiment >>
A fourth embodiment of the packaging bag and package of the present invention will be described with reference to FIGS. 4 (a), (b), and (c).
The packaging bag P4 includes a bag body 1 with side gussets whose lower ends are openings for storing the articles to be packaged, and an upper portion of the inner surface of the bag body 1 as shown in FIG. 4 (b) or (c). It has the planar fastener 2 adhere | attached on. The bag body 1 is formed by forming a flat tube having side gussets and having a back-sealed heat seal 1h and applying a top heat seal 1e. In order to form a flat cylinder having side gussets, a single packaging material having an inner surface heat-sealing property is bent into a cylindrical shape, and inner surfaces of both side edges are overlapped in the shape of a palm, and a back-sealed heat seal 1h is applied. After that, side gussets are folded on both sides and folded flat. As for the top seal 1e provided in this packaging bag P4, it is desirable to provide the notch 1f.
The planar fastener 2 of this embodiment also has a bag via a film flange 3 bonded to the back side of the base portion 2a, as shown in FIG. The main body 1 is bonded to the inner surface.
The configuration of the planar fastener 2 itself is exactly the same as that of the planar fastener 2 shown in FIG. The direction of the surface fastener intersects the direction of the side gusset. The planar fastener 2 is attached to the packaging material before making a flat tube with side gussets.
As for the method of providing the planar fastener 2, as shown in FIG. 4 (b), when the planar fastener is provided around the inner surface of the bag body 1, and as shown in FIG. 4 (c), the bag body There are two ways in which a pair of mating surface fasteners are provided on the upper part of the inner surface of 1.
Therefore, as shown in FIG. 4 (b), in the case where the upper surface of the bag body 1 is provided with a sheet fastener around the inner surface, the packaging material for constituting the bag body 1 has the film flange 3 from the orthogonal direction. The planar fastener 2 is supplied, the planar fastener 2 is cut in accordance with the width of the packaging material, the film flange 3 is attached, and the packaging material is temporarily heat-sealed. Thereafter, the side gusset folding is performed. By applying back heat-sealing 1h to the edges of the packaging material, and then performing a film flange 3 in a state in which the planar fastener is folded in a side gusset and making a full turn, the heat-sealing is performed on the packaging material. A sheet-like fastener can be provided around the circuit.
On the other hand, as shown in FIG. 4 (c), when a pair of mating surface fasteners are provided at the upper part of the inner surface of the bag body 1, the direction orthogonal to the packaging material for configuring the bag body 1. The sheet-like fasteners 2 having the film flanges 3 are supplied to a pair of fittings, and the sheet-like fasteners 2 are cut according to the bag width, not the width of the packaging material, to the center of the packaging material via the film flange 3. Temporarily heat-seal, then apply back-sealed heat seal 1h to the edges of the packaging material (you can use eye-sticking tape), and fold the side gusset on the cylindrical packaging material A pair of planar fasteners can be provided by heat-sealing the film flange 3 against the packaging material. As shown in FIG. 4C, the pair of fitting surface fasteners can be opened in an apron shape. The pair of fitting surface fasteners may be shortened so as not to be hooked on the side gussets on both sides. In this case, when the pair of planar fasteners are unfitted, they can be opened in exactly the same manner as the side gusseted bag without the planar fasteners, and can be resealed unlike the zipper.
Although the planar fastener 2 can be attached to the packaging material constituting the bag body 1 without the film flange 3, the film flange 3 can be used as a packaging material by using the film flange 3. It is preferable because it can be temporarily attached.
The packaging body using the packaging bag P4 is obtained by opening the bottom edge of the bag that comes upside down with the top of the packaging bag P4 upside down and storing the packaged goods and applying a bottom seal 1h. In addition, it is desirable to adhere | attach the bag outer surfaces corresponding to the top heat seal 1e and the bottom heat seal 1g so that a side gusset may not open in the upper and lower ends of a bag.
When storing the article to be packaged with the top and bottom of the packaging bag P4 reversed, it is preferable to close the planar fastener 2 and accommodate the article to be packaged.
Further, the handling when taking out the package from the package using the packaging bag P4 is exactly the same as in the first embodiment.

<< 5th Embodiment >>
5th Embodiment is described with reference to FIG. 5 about the packaging bag and package of this invention.
This packaging bag P5 has a bag body 1 with a side gusset whose upper end is an opening for storing an object to be packaged, and a planar fastener 2 bonded to the upper part of the inner surface of the bag body 1. . The bag body 1 is formed by forming a flat tube having side gussets and having a back-sealed heat seal 1h and applying a bottom heat seal 1g, and can be continuously manufactured using a continuous packaging material.
Regarding the configuration of the planar fastener 2 itself and how to provide the planar fastener 2, there are two types identical to the planar fastener 2 shown in FIG. And the planar fastener 2 of this embodiment is also the same as the planar fastener 2 shown in FIG.1 (b) on the inner surface of the bag main body 1 through the film flange 3 adhere | attached on the back surface side of the base part 2a. It is adhered to.
The packaging body using the packaging bag P5 is obtained by opening the upper portion of the packaging bag P5 to store the packaged object and applying the top seal 1e.
When providing the top seal 1e, it is preferable to provide the notch 1f. The planar fastener 2 may or may not be closed before and after the packaged bag P5 is stored and the top seal 1e is applied.
Moreover, the handling at the time of taking out the package from the package using the packaging bag P5 is the same as that for the packaging bag P4.

<< 6th Embodiment >>
A sixth embodiment of the packaging bag and package of the present invention will be described with reference to FIG.
This packaging bag P6 has a bag body 1 which is a three-side sealed bag whose lower end is an opening for storing an object to be packaged, and a planar fastener 2 bonded to the upper part inside the bag body 1. It becomes. The planar fastener 2 in this embodiment is similar to the planar fastener 2 provided in the packaging bag P1 shown in FIG. 1 with respect to the inner surface of the bag body 1 via the film flange 3 bonded to the back side of the base portion 2a. Are glued together. It does not exclude that the back surface of the base portion 2a of the surface fastener 2 is directly heat sealed to the inner surface of the bag body 1.
The bag body 1 is formed by forming a front surface portion 1d ′ and a rear surface portion 1d ″ with a rectangular laminated packaging material and forming an inner surface with a resin film having heat sealing properties, and stacking the inner surfaces with each other to form side seals 1k, 1k, and A top seal 1e is provided, and it is preferable to provide a notch 1f on the upper side of the side seals 1k, 1k and a half cut line connecting the notches 1f, 1f.
The planar fastener 2 is shown in FIG. 1 in that a male planar fastener having a self-fitting function including a base portion 2a and hook-like engagement elements 2b protruding in a multi-row shape from the surface of the base portion is used. It is not different from the planar fastener 2 provided in the packaging bag P1 shown in FIG.
In this packaging bag P6, two sheet-like fasteners 2 having a bag width are provided in a fitted state, but one sheet-like fastener having a length twice the bag width is half-folded. Do not exclude the case of mounting. The planar fastener 2 is inserted into the upper part of the bag body 1 before applying the side seals 1k, 1k and the top seal 1e. A punch seal that crushes the planar fastener 2 is applied to the crossing portion of the planar fastener 2 and the side seals 1k, 1k to ensure sealing performance.
The packaging body using the packaging bag P6 is one in which the packaging body P6 is turned upside down and the bottom of the bag is opened to store the article to be packaged, and a bottom seal 1g is applied.
The handling at the time of taking out the package from the package using the packaging bag P6 is exactly the same as in the first embodiment.

<< 7th Embodiment >>
7th Embodiment is described with reference to FIG. 7 about the packaging bag and package of this invention.
This packaging bag P7 has a bag body 1 which is a three-side sealed bag whose upper end is an opening for storing an object to be packaged, and a planar fastener 2 bonded to the upper part of the inner surface of the bag body 1. Become.
The bag body 1 is formed by forming a front surface portion 1d ′ and a rear surface portion 1d ″ with a rectangular laminated packaging material and forming an inner surface with a resin film having heat sealing properties, and stacking the inner surfaces with each other to form side seals 1k, 1k, and A bottom seal 1g is provided, and it is preferable to provide notches 1f and 1f on the side seals 1k and 1k.
The planar fastener 2 is provided in exactly the same manner as the planar fastener 2 shown in FIG. The point which is adhere | attached with respect to the inner surface of the bag main body 1 via the film flange 3 adhere | attached on the back surface side of the base part is also the same.
The packaging body using this packaging bag P7 is one in which the pair of planar fasteners 2 is unfitted to store the packaged article, the pair of planar fasteners 2 is resealed, and the top seal 1e is applied. is there.
The handling at the time of taking out the package from the package using the packaging bag P7 is the same as that of the packaging bag P6 shown in FIG.

<< Eighth Embodiment >>
An eighth embodiment of the packaging bag and package of the present invention will be described with reference to FIG.
The packaging bag P8 has a bag body 1 that is a three-side sealed bag having one side (right side in the figure) serving as an opening for storing an object to be packaged, and a sheet shape bonded to the upper part of the inner surface of the bag body 1. It has a fastener 2. And in this embodiment, it adhere | attaches with respect to the inner surface of the bag main body 1 via the film flange 3 adhere | attached on the back surface side of the base part of the planar fastener 2. FIG.
The bag body 1 is formed by forming a front surface portion 1d ′ and a rear surface portion 1d ″ with a rectangular laminated packaging material and forming an inner surface with a resin film having heat sealability, and superimposing the inner surfaces on one side seal 1k. The top seal 1e and the bottom seal 1g are applied.
The planar fastener 2 is provided in the same manner as the planar fastener 2 shown in FIG. The bag body 1 has a planar fastener 2 sandwiched between a front surface portion 1d 'and a rear surface portion 1d "to provide a left side seal 1k and a right side partial side seal 1k', and punch seals on both sides. It is.
The packaging body using the packaging bag P8 is opened with the bag opening facing upward to store the package object, and is provided with a side seal 1k ". When storing the package object, a pair of fittings are provided. It is not necessary to open and close the planar fastener 2.
The handling when taking out the package from the package is exactly the same as the packaging bag P6 shown in FIG.
When the packaging bag P8 is turned 90 degrees counterclockwise or clockwise, the bag body 1 becomes a bottom seal or a three-side seal bag provided with a top seal and side seals on both sides, and the surface fastener 2 is It becomes vertical on the side of one side seal. Either case is included in this embodiment.

<< Ninth Embodiment >>
A ninth embodiment of the packaging bag and package of the present invention will be described with reference to FIG.
The packaging bag P9 includes a bag body 1 and a sheet-like fastener 2 bonded to the upper part of the inner surface of the bag body 1. And in this embodiment, it adhere | attaches with respect to the inner surface of the bag main body 1 via the film flange 3 adhere | attached on the back surface side of the base part of the planar fastener 2. FIG.
This packaging bag P9 is configured substantially the same as the packaging bag P8 shown in FIG. 8, except that the front surface portion 1d ′ and the rear surface portion 1d ″ constituting the bag body 1 are half-folded at the bottom portion of the packaging material. Are continuous.
Accordingly, when the bag is opened sideways with the side seal not applied facing upward and the packaged item is placed in the packaging bag P9 and the side seal 1k "is applied, the package is formed. Is slightly self-supporting because the lower end is folded back.
As described above, the present invention includes the packaging bag P6 shown in FIG. 6 and the packaging bag P7 shown in FIG. 7 in which the front surface portion 1d ′ and the rear surface portion 1d ″ are formed by half-folding the packaging material. It is out.

<< 10th Embodiment >>
A tenth embodiment will be described with reference to FIG. 10 for a packaging bag and a packaging body of the present invention.
The packaging bag P10 has a bag body 1 in the form of a stand pouch that has an opening for storing an object to be packaged on one side (right side in the figure), and a surface bonded to the upper part of the inner surface of the bag body 1 A shaped fastener 2 is provided. And in this embodiment, as shown in FIG.1 (b), it adhere | attaches with respect to the inner surface of the bag main body 1 via the film flange 3 adhere | attached on the back surface side of the base part of a fitting pair of planar fastener 2. FIG. Has been.
The bag body 1 is made slightly differently from the conventional bag making method for making a stand pouch. That is, a bottom gusset 1i folded in a V-shaped cross section is placed on the lower portion between the front surface portion 1d 'and the rear surface portion 1d ", and a top seal 1e and a side seal are applied. Side seals 1k ′ and 1k ′ are provided separately on the upper and lower parts so as to leave an opening that accommodates the package in the middle, and the other extends in the middle.
The pair of mating surface fasteners 2 are sandwiched between the front surface portion 1d ′ and the rear surface portion 1d ″, and are provided with a left side seal 1k and a right side seal 1k ′ at both ends, and a punch seal. Applied.
The packaging body using the packaging bag P10 is opened with the bag opening facing upward to accommodate the packaged object, and is provided with a side seal 1k ″.
The handling when taking out the package from the package is exactly the same as the packaging bag P6 shown in FIG.
The packaging bag P10 is the same as the packaging bag P8 shown in FIG. 8 in that an opening for storing an object to be packaged is at the side edge.
The packaging body using the packaging bag P10 is opened with the opening facing upward to store the packaged object, and is provided with a side seal 1k ". When storing the packaged object, a pair of mating sheet shapes It is not necessary to open and close the fastener 2.
In order to take out the package from the package, the upper end of the bag is cut open so as to connect the other notch 1f to the other notch 1f, and then the pair of planar fasteners 2 are opened widely to take out the package. A necessary amount of articles to be packaged can be taken out, and the rest can be closed by resealing the pair of planar fasteners 2.
Since the packaging bag and package of this embodiment are self-supporting, they are suitable for packaging microwave heated food.

<< 11th Embodiment >>
The eleventh embodiment will be described with reference to FIG. 11 for the packaging bag and package of the present invention.
This packaging bag P11 has a bag main body 1 in the form of a stand pouch whose upper end is an opening for storing an object to be packaged, and a sheet-like fastener 2 bonded to the upper part of the inner surface of the bag main body 1. It becomes. And in this embodiment, as shown in FIG.1 (b), it adhere | attaches with respect to the inner surface of the bag main body 1 via the film flange 3 adhere | attached on the back surface side of the base part of a fitting pair of planar fastener 2. FIG. Has been.
The bag body 1 is made by a conventional method of making a stand pouch.
The difference between the packaging bag P11 and the packaging bag P10 is that an opening for accommodating an article to be packaged is provided at the upper end of the bag.
Therefore, the packaging body using the packaging bag P11 is one in which the planar fastener 2 is opened to store the article to be packaged, the planar fastener 2 is closed, and the top seal 1e is applied.
About the procedure at the time of taking out a to-be-packaged object from a package, and a reseal function, it is the same as the packaging bag P10 shown in FIG.
Since the packaging bag and package of this embodiment are self-supporting, they are suitable for packaging microwave heated food.

<< Twelfth Embodiment >>
Next, a twelfth embodiment will be described with reference to FIG.
A packaging bag P12 according to the twelfth embodiment includes a bag body made up of a cylindrical body 1A and a hat portion 1B, and a pair of planar fasteners 2. And in this embodiment, as shown in FIG.1 (b), it adhere | attaches with respect to the inner surface of the bag main body 1 via the film flange 3 adhere | attached on the back surface side of the base part of a fitting pair of planar fastener 2. FIG. Has been.
The bag body of the packaging bag P12 is characterized by a form including a cylindrical body 1A and a hat portion 1B.
The cylindrical body 1A has a front surface portion 1d ′, a rear surface portion 1d ″, side gussets 1m and 1n on both sides, side seals 1k and 1k, and vertical ribs at four corners. A heat seal 1q connected to the bag main portion 1A by stacking two rectangular wrapping materials (not labeled) on the front portion 1d 'of the bag main portion 1A and the outer upper end of the rear surface portion 1d "of the bag main portion 1A. And side seals 1p and 1p are applied. The bottom seal 1g is not applied at the time of bag making, and the lower end of the bag serves as a storage port for the item to be packaged.
The surface where the cap portion 1B and the bag main portion 1A overlap, that is, the head front surface portion constituting the cap portion 1B and the inner surface lower edge of the head rear surface portion, and the front surface portion 1d ′ and the rear surface portion 1d constituting the bag main portion 1A. The top edge of the outer surface of the bag is part-coated with a heating adhesive that is welded at a seal temperature lower than the heat seal temperature of the inner surface of the cap portion 1B and the bag main portion 1A. This part coat is also applied to the upper edge of the half-folded close contact surface (bag outer surface) of the pair of left and right side gussets 1m, 1n. The cap portion 1B has a flat bag shape on the upper portion of the bag body 1 having the bag main portion 1A of the side gusset tube so as to facilitate the mechanical filling of the article to be packaged. A pair of planar fasteners 2 are hat portions 1B. It is attached so that it may be pinched | interposed into the head front part and head rear part which comprise.
The pair of planar fasteners 2 are located above the bag main portion 1A. The side seals 1p and 1p are provided with notches 1f slightly above the planar fastener 2.
The packaging body using the packaging bag P12 is one in which the bag is turned upside down to open an opening to store an object to be packaged, and a bottom seal 1g is applied.

<< 13th Embodiment >>
Next, a thirteenth embodiment will be described with reference to FIG.
This packaging bag P13 has a bag body 1 and a pair of fitting surface fasteners 2. And in this embodiment, as shown in FIG.1 (b), it adhere | attaches with respect to the inner surface of the bag main body 1 via the film flange 3 adhere | attached on the back surface side of the base part of a fitting pair of planar fastener 2. FIG. Has been.
The pair of planar fasteners 2 is positioned above the bag body 1 and is attached so as to be sandwiched between the front part of the head and the rear part of the head constituting the cap part 1B.
The packaging bag P13 is characterized by the form of the bag body 1.
The bag body 1 includes a bag main portion 1A having side gussets, and a cap portion 1B that overlaps and extends on the upper outer side of the bag main portion 1A.
The bag main portion 1A has a front surface portion 1d ′, a rear surface portion 1d ″, and a pair of left and right side gussets 1m and 1n vertically folded between both sides of the front surface portion and the rear surface portion. 1k is given and vertical ribs are formed at the four corners.
The hat portion 1B has two rectangular wrapping materials (not indicated) on the front portion of the head portion and the rear portion of the head portion overlapped on the front end portion of the bag main portion 1A and the upper outer end of the rear portion, and the bag main portion 1A. A connection heat seal 1q is applied, and side seals 1p and 1p are applied. The notches 1f are provided in the side seals 1p and 1p, located slightly above the planar fastener 2.
This packaging bag P13 has a pair of planar fasteners 2 fitted to the cap portion 1B.
At the stage of manufacturing the bag, the top seal 1e is not applied to the bag body 1. This is because the upper end of the bag body 1 is used as the storage port for the packaged item.
The package using the packaging bag P13 is one in which the planar fastener 2 is opened to store an object to be packaged, the planar fastener 2 is closed, and a top seal 1e is applied.
In order to take out the packaged object packaged as described above, the same procedure as in the case of the package using the packaging bag P12 shown in FIG. 12 can be performed.

<< 14th Embodiment >>
Next, a fourteenth embodiment will be described with reference to FIG.
As shown in FIG. 14 (a), the packaging bag P14 is bonded to the bag body 1 which is a pillow bag whose lower end is an opening for storing an article to be packaged, and the upper part of the inner surface of the bag body 1. It has a pair of planar fasteners 2 as re-sealing means.
The bag body 1 is made of a wrapping material having an inner surface heat-sealing property, and both side edges, which are about 1/4 of the width of the wrapping material, are folded 180 degrees and the inner surfaces are joined at the center of the bag width to form a palm portion After the back-sealed heat seal 1h is applied, it is bent so as to be in close contact with the back surface of the bag, and the top heat seal 1e is applied to the upper end.
For mass production of the bag body 1, a continuous packaging material having an inner surface heat-sealing property is hung on a former, the inner surfaces of both ends of the continuous packaging material are closed in a palm shape, and a back-sealed sheet seal is applied to form a continuous cylinder. As a flat tube, a lateral seal is applied so as to be perpendicular to the continuous direction of the continuous flat tube at a bag length pitch, and then the bag is cut at the time of the lateral seal to complete the bag making.
As shown in FIG. 14 (b), the surface fastener 2 is a male type having a self-fitting function comprising a base portion 2a and hook-like engagement elements 2b projecting in multiple rows from the surface of the base portion. It is a sheet-like fastener, and the upper half of the back side of the base part 2a is bonded to the bag inner surface (reference numeral 1r indicates the bonded portion), and the hook-like engagement elements on one side are hook-like on the other side. It has a reseal function to be removably inserted into the gap between the engaging elements.
Since the surface fastener 2 is made of polypropylene or polyethylene and has heat sealability, the inner surface having heat sealability of the bag body 1 and the back surface of the base portion 2a can be fixed by thermal bonding. However, the bag body 1 and the base portion 2a may be fixed by adhesion.
In this embodiment, the top seal 1e has drooping portions 1e ′ that are close to the planar fastener 2 at both ends, and each drooping portion 1e ′ is provided with a notch 1f. The notch 1 f is for cutting open between the top seal 1 e and the pair of planar fasteners 2 when taking out the package. It is preferable that a half cut is provided on the surface of the bag body 1 so as to connect the notches 1f and 1f.
Even if a sealing force is applied to the projecting portion 2b, the surface fastener 2 does not buckle because the projecting portion 2b is dispersed, so that the surface fastener 2 is attached to the inner surface of the bag body 1 on the back surface of the base portion 2a. Can be directly heat sealed to the inner surface of the bag body 1.
The packaging body using this packaging bag P14 is a packaging body P14 shown in FIG. 14 (a) which is turned upside down to open the bottom of the bag to store an object to be packaged (not shown) and to which a bottom seal 1g is applied. .
In order to take out the package from the package using the packaging bag P14, the upper end of the bag is cut from one notch 1f to the other notch 1f, and then the planar fastener 2 is opened to provide the necessary amount of package. It can be taken out one by one, and if there is a remaining amount, the surface fastener 2 can be resealed and finished.
The bag body 1 is in the form of a pillow bag with a back-sealed seal, and since the planar fastener 2 is attached around the inner periphery of the bag, the bag opening is opened and the planar fastener 2 is disengaged. It can be greatly opened into an elliptical or circular opening shape.

<< 15th Embodiment >>
Next, a fifteenth embodiment will be described with reference to FIG.
As shown in FIG. 15 (a), the packaging bag P15 is bonded to the bag body 1 which is a pillow bag whose upper end is an opening for storing an object to be packaged, and to the upper part of the inner surface of the bag body 1. It has a pair of planar fasteners 2 as re-sealing means.
As shown in FIGS. 15B and 15C, there are two ways of providing the planar fastener 2.
The planar fastener 2 shown in FIG. 15B is formed by fitting one hook-like engaging element 2b into the gap between the other inner-side hook-like engaging elements 2b and both base portions 2a. A part in the width direction near the opening end of the back surface of the bag is bonded to the inner surface of the bag body 1 (the part indicated by reference numeral 1r) and the remaining part is not bonded.
The planar fastener 2 shown in FIG. 15 (b) is formed by connecting a pair of planar fasteners equal in length to the bag width between one hook-like engaging element and the other inner-side hook-like engaging element. Due to the attachment method that fits into the gap and the characteristics of the pillow bag, a sheet-like fastener equal to twice the bag width is attached in the film width direction and hung on the former, and folded in half as a pillow bag. In this case, both of the mounting methods are such that one hook-like engaging element is fitted in the gap between the hook-like engaging elements on the other inner surface side.
The planar fastener 2 shown in FIG. 15 (c) is formed by fitting one hook-like engaging element 2b into the gap between the other inner-side hook-like engaging elements 2b and one base portion 2a. A portion of the back surface of the back surface of the bag near the opening end is bonded to the inner surface of the bag body 1 and the remaining portion is not bonded. At the same time, a part in the width direction near the opening end of the back surface of the other base portion is bonded to the inner surface of the bag body.
The bag body 1 of the packaging bag P15 is formed in the same manner as the bag body 1 of the packaging bag P14 shown in FIG. 14A, except that a bottom heat seal 1g is applied instead of a top heat seal.
The packaging body using this packaging bag P15 is obtained by opening the planar fastener 2 to store the packaged object and applying the top seal 1e. The top seal 1e can be provided in the same shape as the top seal 1e shown in FIG. 14A and can be provided with a notch 1f. Although the top seal 1e is applied after the article to be packaged is stored, the planar fastener 2 may be either closed or not.
Moreover, the handling at the time of taking out the package from the package using the packaging bag P15 is exactly the same as the packaging bag P14 shown in FIG.

[Latch strength test]
A packaging bag of the fifteenth embodiment shown in FIG. 15 is made, and the planar fastener 2 having a width of 15 mm is cut from the packaging bag so as to be in the center in the height direction, thereby making a test sample. The latch strength test shown in b) was performed.
First, as shown in FIG. 16 (a), the front side and the rear side of the bag body 1 are gripped with chucks, the initial chuck distance is 50 mm, and the upper chuck is raised at a speed of 300 mm / min. The change in tensile force until the fitting of the planar fastener 2 was dissociated was measured. As a result, the end of the planar fastener 2 on the bag opening side opens from the beginning of the test, and the tensile force acts on the end of the base of the planar fastener 2 on the bag opening side. I was able to confirm. Tensile force recorded a maximum value of 0.1261 N as an average of five latch strength tests.
Next, as shown in FIG. 16 (b), the bag inner side end of the front surface portion and the rear surface portion of the bag body 1 is gripped with a chuck, and the planar fastener 2 is subjected to the same conditions as shown in FIG. 16 (a). The change in tensile force until the fitting was released was measured. At the initial point of the test, the half of the inner side of the planar fastener 2 was overhanging, and it was confirmed that the tensile force acts in a distributed manner on the entire surface of the base portion of the planar fastener 2. Tensile force recorded a maximum value of 1.0444 N as an average of five latch strength tests.
From the results of the two latch strength tests, it was proved that the engagement of the planar fastener was a structure that was difficult to open from the inside and was easy to open from the outside.

The packaging bag and package according to the present invention are not limited to the above-described embodiment. For example, the front gusset is composed of a separate packaging material for the front gusset, and the upper end of the side gusset is several centimeters lower than the upper end of the bag. A packaging bag and a package with a side gusset having a configuration in which a surface fastener is provided are also included. In the manufacture of this packaging bag, a pair of mating surface fasteners can be inserted in the same direction between the continuous packaging materials for constituting the front surface portion and the rear surface portion, and can be fitted without using a film flange. It is possible to heat seal and bond a pair of planar fasteners to the packaging material. In addition, for example, the side gusset is formed of a separate packaging material for the front and rear surfaces, and the upper end of the side gusset coincides with the upper end of the bag, and a pair of mating parts are fitted between the front and rear surfaces to fill the bag width. A packaging bag and a package with a side gusset having a configuration in which a surface fastener is provided are also included. In the manufacture of this packaging bag, the pair of mating surface fasteners are attached in the state shown in FIG. The pair of fitting planar fasteners can be attached by being sandwiched between the continuous packaging materials for constituting the front surface portion and the rear surface portion from the orthogonal direction.
Since the packaging bag and package of the third, fourth, fifth, and tenth to thirteenth embodiments are self-supporting, they are suitable for packaging microwave heated food. That is, it is necessary to open the outside of the planar fastener when heating in a microwave oven, but the planar fastener need not be opened. Even if the pressurization and heating in the bag reaches an extreme state, the planar fastener does not have a risk of opening in a ruptured state. The zipper opens in a bursting state and the contents scatter. Since the planar fastener has a gap, the heated steam in the bag can escape well from the gap of the planar fastener to the outside of the bag to prevent the bag from rupturing, and has a pressure-pressing function.
In the packaging bag and the packaging body of the fourteenth and fifteenth embodiments, a part of the back surface of the base portion on each side in the width direction near the opening end remains adhered to the inner surface of the bag body. Although the part is unbonded, this can also be applied to the packaging bags of the third to thirteenth embodiments with the film flange 3 removed.
Although the embodiment of the invention described in claim 4 is shown in the packaging bag of the fifteenth embodiment, it can also be applied to the packaging bag of the second to thirteenth embodiments by removing the film flange 3.

For example, the following laminated film can be adopted as the packaging material for producing the packaging bag according to the present invention.
(1) PET 12μm / Adhesive / LLDPE 60μm ・ ・ ・ ・ (Outer layer / Inner layer: Sealant)
(2) O-Ny 15μm / Adhesive / LLDPE 60μm ・ ・ ・ ・ (Outer layer / Inner layer: Sealant)
(3) PET 20 μm / adhesive / uniaxially or biaxially stretched HDPE 20 μm / adhesive / LLDPE 50 μm (outer layer / intermediate layer / inner layer: sealant)
(4) O-Ny 15μm / adhesive / uniaxially stretched or biaxially stretched HDPE 20μm / adhesive / LLDPE 50μm ... (outer layer / intermediate layer / inner layer: sealant)
(5) PET 12μm / adhesive / aluminum foil / adhesive / LLDPE 60μm ... (outer layer / intermediate layer / inner layer: sealant)
(6) PET 12μm (silica or alumina deposited layer) / adhesive / uniaxially or biaxially stretched HDPE 20μm / adhesive / LLDPE 50μm (outer layer / intermediate layer / inner layer: sealant)
(7) PET 12 μm / adhesive / aluminum foil / adhesive / O-Ny 15 μm / adhesive / LLDPE 50 μm (outer layer / intermediate layer / intermediate layer / intermediate layer / inner layer: sealant)
(8) Paper 100g / m ² / PE 20μm / LLDPE 50μm ... (Outer layer / Inner layer: Sealant)
(9) PET 12μm / Adhesive / LLDPE 60μm ・ ・ ・ ・ (Outer layer / Inner layer: Sealant)
(10) PET ・ SiOx 12μm / Adhesive / LLDPE 100μm ・ ・ ・ ・ (Outer layer / Inner layer: Sealant)

The present invention relates to a packaging bag according to a first embodiment of the present invention, wherein (a) is a front view, (b) is a partially enlarged sectional view showing how to attach a surface fastener, and (c) is another attachment of the surface fastener. The partial expanded sectional view which shows the direction. The front view of the packaging bag which concerns on 2nd Embodiment of this invention. The front view of the packaging bag which concerns on 3rd Embodiment of this invention. The present invention relates to a packaging bag according to a fourth embodiment of the present invention, in which (a) is a front view, (b) is a horizontal sectional view showing how to attach a surface fastener, and (c) is another method of attaching the surface fastener. FIG. The front view of the packaging bag which concerns on 5th Embodiment of this invention. The front view of the packaging bag which concerns on 6th Embodiment of this invention. The front view of the packaging bag which concerns on the 7th Embodiment of this invention. The front view of the packaging bag which concerns on 8th Embodiment of this invention. The front view of the packaging bag which concerns on 9th Embodiment of this invention. The front view of the packaging bag which concerns on 10th Embodiment of this invention. The front view of the packaging bag which concerns on 11th Embodiment of this invention. The front view of the packaging bag which concerns on 12th Embodiment of this invention. The front view of the packaging bag which concerns on 13th Embodiment of this invention. The front view of the packaging bag which concerns on 14th Embodiment of this invention. The front view of the packaging bag which concerns on 15th Embodiment of this invention. The figure which shows the execution method of the latch strength test regarding the packaging bag which concerns on 15th Embodiment.

Explanation of symbols

P1-P15 ... packaging bag, 1 ... bag body,
1, 1A ... bag body, 1B ... hat part,
2 ... Flat fastener, 3 ... Film flange,
1d '... front part, 1d "... rear part,
1h: Back-sealed seal, 1k, 1k ', 1k ", 1p ... Side seal,
1e ... top seal, 1g, 1j ... bottom seal, 1q ... connection seal 1f ... notch, 1r ... seal,

Claims (7)

A bag body having an opening for receiving an object to be packaged, and a bag body attached to both sides of the inner surface along the opening end of the upper end that is cut open for taking out the object to be packaged, or in a mating opposing state Having a surface zipper,
The planar fastener is composed of a base portion and hook-like engaging elements that protrude in multiple rows from the surface of the base portion, and the back surface of the base portion is bonded to the inner surfaces on both sides of the bag body. A packaging bag, characterized in that the hook-shaped engagement element is a male surface fastener that can be fitted into the gap between the other hook-shaped engagement elements and can be removably engaged. The planar fastener is attached to the inner surface of the bag body by making a round around the opening end that is cut open in order to take out the back of the bag body to be packaged.
The hook-like engagement element on one inner surface side and the hook-like engagement element on the other inner surface side face each other without being fitted, or the hook-like engagement element on one inner surface side is on the other inner surface side. The packaging bag according to claim 1, wherein the packaging bag is fitted in a gap between hook-like engaging elements.   The planar fastener has a pair of planar fasteners having a length substantially equal to the bag width, and the hook-like engagement element on one inner surface side is fitted into the gap between the hook-like engagement elements on the other inner surface side. The packaging bag according to claim 1, wherein the back surfaces of the base portions on both sides are adhered to the inner surface of the bag body.   The planar fastener has a pair of planar fasteners having a length substantially equal to the bag width, and the hook-like engagement element on one inner surface side is fitted into the gap between the hook-like engagement elements on the other inner surface side. As described above, only the back surface of one base portion is bonded to the inner surface of the bag body, and the back surface of the other base portion is not bonded, and the back surface of the other base portion is accommodated in the bag body. The packaging bag according to claim 1, wherein the packaging bag is adhered to the inner surface of the bag body at the same time when the bag opening is closed and adhered.   5. The planar fastener is characterized in that a part in the width direction near the opening end of the back surface of the base part on each side is bonded to the inner surface of the bag body and the remaining part is not bonded. The packaging bag as described in any one of.   The packaging bag according to any one of claims 2 to 4, wherein the planar fastener is bonded to the inner surface of the bag body via a film flange that is bonded in advance to the back surface of the base portion.   A package comprising: a package bag according to any one of claims 1 to 6;

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