JP2000255596A - Zipper bag and zipper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a zipper bag which can be unsealed and resealed, and which can be applied to an automatic filling and packaging machine. SOLUTION: The zipper bag includes a bag-like vessel 2 comprising a single wrapper whose side rims 4a, 4b are butted with each other and heat-sealed, and a zipper device 3 attached along a heat seal 5 on an internal face of the vessel 2. The zipper device 3 has a male zipper member 8 and a female zipper member 9, wherein the member 8 is placed on a side of the heat seal 5 of the vessel 2, while the member 9 is placed at a position which can be fitted into the male zipper member 9 on the other side of the heat seal 5 of the vessel 2. An easy-to-tear means 10 is provided between the male zipper member 8 and the female zipper member 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener bag and a fastener device which have an easy opening property and a resealing property and which can be applied to an automatic filling and packaging machine.

[0002]

2. Description of the Related Art In recent years, packaging bags have often been required to have both functions of easy opening and resealing at the same time. There is a need for a zipper bag that has both functions of resealing.

As a zipper bag having both functions of opening and resealing, a male zipper of a zipper device is provided on the inner surface of one wrapping material of a bag-like container in which two packaging materials are overlapped and the peripheral edge thereof is heat-sealed. There is known an apparatus in which a member is attached, a female fastener member of a fastener device is attached to the inner surface of the other packaging material, and the container is opened and resealed by fitting and releasing the male fastener member and the female fastener member. Have been.

Further, in order to give the fastener bag easy opening, a material having an easy-opening function is selected for the packaging material constituting the bag-like container, the bag-like container is directly damaged, Means, such as attaching a filament to the surface, are employed.

[0005]

The above-mentioned zipper bag can provide both easy opening and resealing functions to the bag-like container, but the bag-like container is heated by stacking two packaging materials. Since it is formed by sealing, the work is complicated in the bag making process of forming a fastener bag and in the filling and packaging process of packing at the same time as filling, especially in the case of automatic filling and packaging, the equipment complexity and work Is complicated, and there is a large problem in performing a practical operation.

The present invention has been made in view of the above points, and has as its object to provide a fastener bag and a fastener device which have easy opening and resealability and can be automatically filled by an automatic filling and packaging machine. .

[0007]

SUMMARY OF THE INVENTION A fastener bag according to the present invention comprises a bag-like container formed by heat-sealing a single packaging material with its side edges abutting each other, and a heat-sealing butter on the inner surface of the bag-like container. A fastener device attached along the portion, the fastener device has a separated male fastener member and a female fastener member, one side of the male fastener member butted heat sealing portion of the bag-shaped container And the female fastener member is arranged at a position where the female fastener member can be fitted to the male fastener member on the other side of the butted heat seal portion of the bag-shaped container, and a means for easily tearing between the male fastener member and the female fastener member. Is provided.

[0008] The fastener bag of the present invention comprises a bag-like container formed by heat-sealing one sheet of packaging material with the side edges of the bag facing each other, and an inner surface of the bag-like container butted along one side of the heat-sealed portion. The fastener device has a separated male fastener member and a female fastener member, and the male fastener member and the female fastener member are spaced apart so as to be fittable. The male fastener member and the female fastener member are provided with easy tearing means.

[0009] The fastener bag of the present invention is a bag-like container formed by heat-sealing one packaging material with the side edges of the bag facing each other, and attached along the heat-sealing portion of the bag-shaped container with the inner surface of the bag-like container. The fastener device is an integrally molded product of a male fastener member, a female fastener member, and a connecting portion that connects the male fastener member and the female fastener member, and is configured by providing a means for easily tearing the connecting portion.

[0010] The fastener bag of the present invention is a bag-shaped container formed by heat-sealing a single packaging material with the side edges of the bag overlapped with each other, and is attached along the heat-sealed portion with the inner surface of the bag-shaped container abutted. The fastener device is an integrally formed product of a male fastener member, a female fastener member, and a connecting portion connecting the male fastener member and the female fastener member, and is provided with a means for easily tearing the connecting portion.

The fastener device of the present invention has a separated male fastener member and a female fastener member, and is configured by providing a linear member on the male fastener member or the female fastener member.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a zipper bag according to the present invention. The zipper bag 1 comprises a bag-like container 2 and a fastener device 3 fixed to the inner surface of the bag-like container 2 by welding or bonding means. ing.

As shown in FIGS. 1 and 2, the bag-shaped container 2 is formed by bending a rectangularly cut packaging material so that the side edges 4a and 4b abut against each other on the back side.
a and 4b are heat-sealed to form a cylindrical body having a back seal portion 5, and the upper and lower ends of the cylindrical body are heat-sealed to form an upper heat seal portion 6 and a lower heat seal portion 7. Made by.

The packaging material is preferably a laminated film, but may be a single film.

When a bag-like container 2 requiring transparency is formed by using a laminated film as the packaging material, a biaxially stretched polypropylene film having a thickness of 20 to 50 microns and a non-woven polypropylene film having a thickness of 20 to 60 microns are formed. A laminated film obtained by laminating a stretched polypropylene film with a dry adhesive layer having a thickness of 2 to 3 microns, or a polyester film having a thickness of 9 to 25 microns and a linear low-density polyethylene film having a thickness of 25 to 120 microns has a thickness of 2 to 2 μm. Laminate film laminated with a 3 micron dry adhesive layer, laminating a biaxially stretched nylon film having a thickness of 9 to 20 microns and a polyethylene film having a thickness of 25 to 120 microns with a dry adhesive layer having a thickness of 2 to 3 microns Film is suitable. The above packaging material is
Although the dry adhesive layer was used as the adhesive, the dry adhesive layer may be an extruded polyethylene layer having a thickness of 12 to 20 microns.

When a bag-like container 2 requiring opacity is formed by using a laminate film as the packaging material, a polyester film having a thickness of 9 to 25 microns and a polyester film having a thickness of 6 to 25
A 30 micron aluminum foil and a 25 to 120 micron thick linear low density polyethylene film with a thickness of 2-3
A laminated film laminated with a dry adhesive layer of a micron thickness, a polyester film of a thickness of 9 to 25 microns, an aluminum vapor-deposited polyester film of a thickness of 12 microns, and an unstretched polypropylene film of a thickness of 20 to 60 microns are 2-3 microns in thickness. The laminated film laminated by the dry adhesive layer of the above is suitable. In the above packaging material, a dry adhesive layer was used as an adhesive, but the dry adhesive layer may be an extruded polyethylene layer having a thickness of 12 to 20 microns.

As shown in FIG. 2, the fastener device 3 comprises a male fastener member 8 and a female fastener member 9 which are separated from each other, and a base 8a of the male fastener member 8 is provided with a back seal of the bag-like container 2. The base 9 a of the female fastener member 9 is fixed to one side of the back seal 5 of the bag-shaped container 2.

The male fastener member 8 and the female fastener member 9 are formed by continuously extruding an olefin resin material such as polyethylene, polypropylene, or a copolymer thereof. The male fastener member 8 and the female fastener member 9 are shown in FIG.
Although the number of the fitting portions is one, two or more fitting portions may be provided as necessary.

As shown in FIG. 2, the bag-like container 2 has
A narrow opening rough surface portion 10, 10 is provided on a film located on the surface side of the laminate film. Each opening rough surface portion 10 is formed at a position corresponding to the folded connection portion of the back seal portion 5 and the bag-shaped container 2. Rough surface part 1 for opening
0 is created by pressing the sandpaper against the film to form a scratch that does not penetrate the film. The rough surface portion 10 for opening functions as a means for easily tearing the bag-like container.

To open the zipper bag 1, the end of the back seal portion 5 provided on the zipper bag 1 is pinched by a finger, and the back seal portion 5 is lifted in a direction away from the surface of the zipper bag 1, and This is performed by cutting the part along the bent part by the rough surface part 10 for opening.

Next, a method for manufacturing the fastener bag 1 will be described.

As a packaging material for the bag-shaped container 2 shown in FIG. 1, a continuous length laminated film is used for the automatic filling and packaging machine so that the total length of the width of the bag-shaped container 2 and the length of the back seal portion 5 can be obtained. A packaging material cut to twice the length is used. The packaging material thus cut is bent and formed into a bag-like container 2.
When making the bag, the opening rough surface portion 10 is formed so as to correspond to at least one of the bent portions of the back seal portion 5 of the bag-shaped container 2, preferably to both of the bent portions.

Next, the packaging material is bent and formed so that the side edges 4a and 4b abut each other to form a cylindrical body.
In this case, the opening rough surface portion 10 provided on the packaging material is located along the bent portion connected to the side edges 4a and 4b of the tubular body.

Next, the continuous length fastener device 3 is supplied to the inside of the cylindrical body in a state where the male fastener member 8 and the female fastener member 9 are fitted to each other. The fastener device 3 is positioned so that the base 8a of the male fastener member 8 is in contact with one side of the side edges 4a, 4b on the inner surface on the side where the side edges 4a, 4b of the tubular body are provided. The base 9a of the mold fastener member 9 is positioned so as to be in contact with the other side of the side edges 4a, 4b on the inner surface on the side where the side edges 4a, 4b of the tubular body are provided. That is, the male fastener member 8 and the female fastener member 9 are connected to the side edges 4 abutted on the inner surface of the tubular body.
a and 4b are interposed therebetween.

Next, the butted side edges 4a, 4b,
4b are bonded to each other by heat sealing to form a back seal portion 5. At the same time, the base 8a of the male fastener member 8 and the base 9a of the female fastener member 9 are welded to the inner surface of the cylindrical body. Alternatively, it is fixed by an adhesive means. As a result, a tubular body having both ends opened to which the fastener device 3 is fixed is formed on the inner surface.

Next, one end of the tubular body having both ends opened to which the fastener device 3 is fixed is heat-sealed to form a lower heat-seal portion 7, thereby forming the bag-like container 2 having an upper opening. The bag-shaped container 2 having the upper end opening is filled with the contents through the opening, and after the contents are filled, the opening end is heat-sealed to form the upper end heat seal portion 6. The bag-like container 2 filled with the contents is cut between the upper end heat seal portion 6 and the packaging material.

FIGS. 3 and 4 show a zipper bag 1a according to another embodiment of the present invention. The zipper bag 1a shown in FIGS. 3 and 4 is different from the zipper bag 1 shown in FIGS. The configuration is different in that instead of providing the rough surface portion 10 for opening as the means for easily tearing on the bag-shaped container 2, a linear body 11 as the means for easily tearing is provided on the fastener device 3a.

As shown in FIG. 4, the fastener device 3a comprises a male fastener member 8 and a female fastener member 9 which are separated from each other, and a linear body 11 is provided inside a base 8a of the male fastener member 8. It is pseudo-welded by welding means or bonding means. The linear body 11 may be pseudo-welded to the outside of the base 8a of the male fastener member 8. In this case, the positions of the male fastener member 8 and the female fastener member 9 of the fastener device 3a with respect to the bag-like container 2 are reversed.

The linear body 11 is preferably a polymer material different from the packaging material, for example, a nylon monofilament or a metal wire. However, both the base 8a of the male fastener member 8 and the packaging material are simultaneously used. Cotton yarn or silk yarn may be used as long as the yarn has cutting strength.

In the fastener device 3a, the olefin resin material is continuously extruded by extrusion molding means to form the male fastener member 8 and the female fastener member 9 and simultaneously extrude the linear member 11 to form the linear member. 11 can be integrally connected to the male fastener member 8 or the female fastener member 9.

As shown in FIG. 3, the fastener bag 1a has a fastener device 3a and a linear body 11 extending continuously from the upper end to the lower end. A grip 13 is formed by the triangular cutout line 12, and an end of the linear body 11 is connected to the grip 13.

In order to open the zipper bag 1a, the lower heat-seal portion 7 of the zipper bag 1a is cut along a notch line 12 to form a grip portion 13 separated from the lower heat-seal portion 7. 13 is pinched by a finger and pulled up in a direction away from the surface of the fastener bag 1a. In response to this movement of the grip portion 13, the linear body 11 connected to the grip portion 13 cuts both the base 8a of the male fastener member 8 and the packaging material at the same time, and the fastener bag 1a is opened.

The zipper bag 1b shown in FIG.
Is different from the zipper bag 1a shown in FIG. 7 in that the gasket-attached bag-shaped container 2a is replaced by an envelope-attached bag-shaped container 2b.

Since the envelope-attached bag-like container 2b has a structure having an adhesive portion 5a in which the ends of the packaging material are overlapped, a non-stretched polypropylene film having a thickness of 20 to 60 microns is used as the packaging material. A laminated film obtained by laminating a biaxially oriented polypropylene film of 20 to 50 microns and a non-oriented polypropylene film of 20 to 60 microns in thickness with a dry adhesive layer of 2 to 3 microns, or a linear film of 30 to 50 microns in thickness A laminated film obtained by laminating a low-density polyethylene film, a polyester film having a thickness of 9 to 25 microns, and a linear low-density polyethylene film having a thickness of 25 to 120 microns with a dry adhesive layer having a thickness of 2 to 3 microns; Biaxially stretched nylon having a thickness of 60 to 60 microns and a thickness of 9 to 20 microns Laminate film was laminated by a dry adhesive layer of the film and the thickness of 25 to 120 microns thick 2-3 microns polyethylene film is suitable. The adhesive of the packaging material is a dry adhesive layer, but the dry adhesive layer may be a polyethylene extruded layer.

The fastener bag 1c shown in FIG.
The configuration of the fastener device is different from that of the fastener bag 1b shown in FIG. The fastener device 3c provided in the fastener bag 1c shown in FIG. 6 is constituted by an integrally formed product of the male fastener member 8, the female fastener member 9, and the connecting portion 14 connecting these members, and the inner surface of the connecting portion 14 is torn. A linear body 11 as an easy means is arranged.

The fastener bag 1c extends continuously from the upper end to the lower end similarly to the fastener device 3a and the linear body 11 shown in FIG. A grip portion is formed by the square cutout line, and the end of the linear body 11 is connected to the grip portion.

The fastener bag 1d shown in FIG.
Compared with the fastener bag 1 shown in FIG.
And a protrusion 12 extending in the longitudinal direction of the fastener device 3 is formed between the base 8a of the male fastener member 8 and the base 9a of the female fastener member 9, so that the protrusion 12 and the bag-like container are attached. The structure is different in that a rough surface portion 10a for opening as an easy tearing means is provided in the connecting portion of No. 2.

The zipper bag 1e shown in FIG.
Compared to the fastener bag 1d shown in FIG.
The configuration is different in that the protrusion 12 is eliminated and the fastener device 3 is replaced with a fastener device 3a. In the fastener bag 1e shown in FIG. 8, the base 8a of the male fastener member 8 of the bag-like container 2 and the base 9 of the female fastener member 9 are provided.
The space between a is cut by the linear body 11. In the zipper bag 1e shown in FIG. 8, the linear body 11 is used as the cutting means of the bag-shaped container 2. However, the linear body 11 is omitted, and the base of the male fastener member 8 on the inner surface of the bag-shaped container 2 is omitted. A tape is fixed between the base 8a and the base 9a of the female fastener member 9 by welding, adhesion or adhesion, or the base 8a of the male fastener 8 and the base 9 of the female fastener 9 of the bag-shaped container 2.
It is also possible to provide a narrow opening rough surface at a position close to a and cut the bag-like container 2 with a tape or a narrow opening rough surface.

The tape is formed of, for example, a laminated film obtained by laminating a polyethylene film having a thickness of 30 μm on both sides of a polyester film having a thickness of 12 μm, and the base 8 a of the male fastener member 8 or the female fastener member 9. The width of the base 9a is set to be slightly smaller than the length between the base 8a of the male fastener member 8 and the base 9a of the female fastener member 9 so that the base 9a functions as a guide when the bag-shaped container 2 is cut. ing.

The fastener bag 1f shown in FIG.
Is different from the zipper bag 1e shown in FIG. 2 in that the palm-attached bag-shaped container 2a is replaced with an envelope-attached bag-shaped container 2b.

[0042]

As described above, according to the present invention, the bag-like container is formed of one packing material, the fastener device is arranged on one surface of the bag-like container, and the bag-like container or the fastener device is provided on the inner surface of the bag-like container or the fastener device. By providing the means for easily tearing, the device can be opened and resealed and can be applied to a general automatic filling and packaging machine which does not require a special device.

[Brief description of the drawings]

FIG. 1 is a rear view of a fastener bag according to the present invention.

FIG. 2 is an enlarged sectional view of the fastener bag shown in FIG.

FIG. 3 is a rear view of another embodiment of the fastener bag according to the present invention.

FIG. 4 is an enlarged sectional view of the fastener bag shown in FIG. 3;

FIG. 5 is a view showing another embodiment of the fastener bag according to the present invention.

FIG. 6 is a view showing another embodiment of the fastener bag according to the present invention.

FIG. 7 is a view showing another embodiment of the fastener bag according to the present invention.

FIG. 8 is a diagram showing another embodiment of the fastener bag according to the present invention.

FIG. 9 is a view showing another embodiment of the fastener bag according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fastener bag 2 Bag-shaped container 3 Fastener device 5 Back seal part 8 Male fastener member 9 Female fastener member 10 Easy tearing means 11 Linear body

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Ohara ▲ Sho ▼ 5-367-21 Higashicho, Koshigaya-shi, Saitama Pref. Co., Ltd. (72) Inventor Yuichi Oki 5-6-Shiba, Minato-ku, Tokyo No. 1 Idemitsu Petrochemical Co., Ltd. F term (reference) 3E064 AA06 AA08 BC18 EA08 HN13 HP03

Claims (17)

[Claims] 1. A bag-like container formed by heat-sealing one packaging material with its side edges abutting each other, and a fastener device attached along the heat-sealing portion on the inner surface of the bag-like container. Having, the fastener device has a separated male fastener member and female fastener member,
The male fastener member is arranged on one side of the butt heat seal portion of the bag-shaped container, and the female fastener member is arranged on the other side of the butt heat seal portion of the bag-shaped container at a position where it can be fitted to the male fastener member. A fastener bag, characterized in that a means for easily tearing is provided between the male fastener member and the female fastener member. 2. The fastener bag according to claim 1, wherein the easy tearing means is a narrow tearing portion formed in a butt heat sealing portion of the bag-like container. 3. The fastener bag according to claim 1, wherein the tear-easy means is a linear body provided on an inner surface or an outer surface of a base of the male fastener member. 4. The fastener bag according to claim 1, wherein the tear-easy means is a linear body provided on an inner surface or an outer surface of a base of the female fastener member. 5. A bag-like container formed by heat-sealing one packaging material with its side edges abutting against each other, and a fastener attached along one side of the heat-sealing portion on the inner surface of the bag-like container. Device, the fastener device has a separated male fastener member and a female fastener member, the male fastener member and the female fastener member are arranged at an interval so as to be fittable, the male fastener A fastener bag provided with a means for easily tearing between a member and a female fastener member. 6. The fastener bag according to claim 5, wherein the means for easily tearing is a narrow tear portion formed on the bag-like container. 7. The fastener bag according to claim 5, wherein the means for easily tearing is a linear body provided on the inner surface or the outer surface of the base of the male fastener member. 8. The fastener bag according to claim 5, wherein the tear-easy means is a linear body provided on the inner surface or the outer surface of the base of the female fastener member. 9. The fastener bag according to claim 5, wherein the means for easily tearing is a narrow tape fixed to the inner surface of the bag-like container. 10. The fastener bag according to claim 9, wherein the narrow tape is fixed to the inner surface of the bag-like container by welding, adhesion or adhesion. 11. A bag-like container formed by heat-sealing one packaging material with its side edges abutting each other, and a fastener device attached along the heat-sealing portion on the inner surface of the bag-like container. A fastener bag, wherein the fastener device is an integrally molded product of a male fastener member, a female fastener member, and a connecting portion connecting the male fastener member and the female fastener member, and the connecting portion is provided with a means for easily tearing. 12. The zipper bag according to claim 11, wherein the tearable means is a linear body provided on an inner surface of the connecting portion. 13. A bag-like container formed by heat-sealing one packaging material with its side edges superimposed on each other, and a fastener device mounted on the inner surface of the bag-like container along the heat-sealing portion. Wherein the fastener device is an integrally molded product of a male fastener member, a female fastener member, and a connecting portion that connects the male fastener member and the female fastener member, and the connecting portion is provided with a tear-easy means. 14. The zipper bag according to claim 13, wherein the means for easily tearing is a linear body provided on the inner surface of the connecting portion. 15. A fastener device having a separated male fastener member and female fastener member, wherein a linear member is provided on the male fastener member or the female fastener member. 16. The fastener device according to claim 15, wherein the linear member is provided on an inner surface of a base of the male fastener member or the female fastener member. 17. The fastener device according to claim 15, wherein the linear member is provided on an outer surface of a base of the male fastener member or the female fastener member.