JP2000025795A - Bag with zipper made of synthetic resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag with a zipper made of synthetic resin wherein while functions of the bag with a zipper which has convenient functions that the zipper can be re-opened/re-closed, air permeability suitable for a packaged object and an engaged state can be secured. SOLUTION: The bag 1 with a synthetic resin zipper comprises a base piece or a tape-like piece 4 formed at a base of a zipper 3 on an internal face of an opening 2 of the bag 1 wherein adhesive portions 5 of an appropriate length are plane-stuck at intervals along a lengthwise direction of the piece 4 and the intervals serve as air permeable portions 6 for the inside and the outside of the bag. The adhesive portions 5 may be provided at intervals with an appropriate length and width according to permeability requirements between the inside and the outside of the bag.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag with synthetic resin zipper, which is suitable for packaging articles that require air permeability inside and outside the bag, especially for packaging food that is cooked in a microwave oven, oven or boil. It is about.

[0002]

2. Description of the Related Art Conventionally, a bag with a chuck has a convenient function of opening and closing a bag opening again by a chuck, maintains airtightness when the chuck is closed, and is provided for packaging various articles. I have.

[0003]

The air-tight bag is not suitable for packaging fresh foods and the like that require air permeability, pickles that generate fermentation gas, and miso. Also,
The packaging of foods to be cooked in a microwave oven, oven, or boil is not suitable because the bag is ruptured by the expansion pressure caused by heating.

[0004] It is an object of the present invention to maintain the function of a bag with a zipper having a convenient function that can be reopened and closed, and to ensure the air permeability and the bite state of the zipper according to the packaged article. It is another object of the present invention to provide a synthetic resin bag with a zipper.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a bag provided with a male / female claw type chuck made of synthetic resin, which is formed at the base of the chuck on the inner side surface of the bag opening. Base piece or tape-shaped piece, surface-bonded with an adhesive part of appropriate length in the longitudinal direction at an interval,
The space is provided as a ventilation portion inside and outside the bag.

[0006] Further, the adhesive portion is provided with an appropriate length and width according to the need of ventilation inside and outside the bag and provided at intervals.

Further, the bag has a filling port for contents on one of four sides of a bottom portion of the bag constituting a mounting surface of the bag to be placed horizontally, and an opening serving as a take-out port is provided on the side of the mounting surface. It is characterized by being provided on the opposite side so as to be spaced from the mounting surface.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 1 denotes a bag made of a synthetic resin film, and an opening 2 is provided with a synthetic resin male and female claw-type re-openable chuck 3.

As shown in FIG. 2, the chuck 3 comprises a female claw 3a and a male claw 3b which are engaged with each other, and a base piece 4 (or a tape-shaped piece) is provided at the base of each of the female claw 3a and the male claw 3b. Is formed, and the chuck 3 is attached to the base piece 4.
Is attached to the inner side surface of the opening 2 through the opening.

In the present invention, a so-called solid surface is bonded to the base piece 4 with an adhesive portion 5 having an appropriate length in the longitudinal direction at an interval.

This will be described in detail with reference to FIGS. The length of the bonding portion 5 is determined in accordance with the necessary ventilation condition between the inside and outside of the bag body 1 and the distance G between the bonding portion 5 and the adjacent bonding portion 5 is set, as shown in FIG. The non-adhesion portion between the inner surface of the body 1 and the base piece 4 is used as the ventilation portion 6 inside and outside the bag body 1.

The width H of the bonding portion 5 is appropriately set in addition to the length L. As described above, the length L of the bonding portion 5 is adjusted according to the necessity of ventilation between the inside and outside of the bag body 1 with the size of the distance L between the adjacent bonding portions 5 being large and small. The bonding strength of the bonding portion 5 with respect to the pressure generated in the bag body 1 depends on the bonding area for surface bonding. Therefore, the length L and the width H of the bonding portion 5 are appropriately set so as to secure a necessary bonding strength according to the pressure generated in the bag 1.

However, in order to secure the necessary adhesive strength, it is an important factor to consider the width H of the adhesive portion 5 in particular. That is, the problem is solved by increasing the width H in response to the demand for securing the strength in the form of reducing the gap G between the adjacent bonding portions 5 and expanding the length L of the bonding portion 5, and reducing the need for ventilation. Avoid the negative situation.

The bag 1 shown in FIGS. 1 and 2 is an embodiment in which the present invention is applied to a so-called vertical bag whose bottom can be expanded. FIGS. This is another embodiment to which the present invention is applied.

That is, the opening 2 of the bag 1 to be placed horizontally
Is provided on the opposite side of the mounting surface 7 of the bag 1 so as to be spaced from the mounting surface 7. A base piece 4 (or a tape-shaped piece) integrated with each base of the female nail 3a and the male nail 3b is inserted into the opening 2 in the longitudinal direction as in the case of the above-described vertically placed bag body 1. The bonding portion 5 having a length is surface bonded at intervals.

In the bag 1 to be placed horizontally, the bonding portion 5 has a length L according to the necessity of ventilation between the inside and outside of the bag 1.
To set the gap G between the adjacent bonding portions 5,
The length L and width H of the bonding portion 5 are appropriately set in order to secure the bonding strength of the bonding portion 5 with respect to the pressure generated in the bag 1.

The bag 1 to be placed horizontally has a filling port for contents on one of four sides of the bottom of the bag constituting the mounting surface 7 of the bag 1. The bag 1 shown in FIGS. 6 and 7 has a filling port 8a at one end near the opening 2 and the filling port 8b at the other end far from the opening 2 in FIG. is there. The filling ports 8a and 8b are filled with the contents from the filling ports 8a and 8b by an automatic filling machine or the like in a food maker with the chuck 3 of the opening 2 closed, and sealed after filling.

Although the bonding portion 5 is provided symmetrically with respect to the chuck 3 in the drawing, it may be provided on only one of them. In addition, the adhesive portion 5 is provided on both base pieces 4 of the male and female claws 3a and 3b, and only one of the base pieces 4 is provided, and the other base piece 4 is entirely adhered to the inner surface of the bag body 1. But good.

Since the present invention has the structure as described above, the non-adhesion portion between the inner surface of the bag 1 and the base piece 4 at the distance G between the adjacent adhesion portions 5 is formed by the ventilation portions 6 inside and outside the bag 1. Thus, when fresh food or the like that requires air permeability is packaged, the ventilation required for preserving the fresh food or the like is obtained, and the fermentation gas generated in the packaging of pickles and miso is discharged. In the case of packaging foods to be cooked in a microwave oven, an oven, or a boiler, steam pressure or the like due to heating is discharged.

The aeration of the air, the discharge of the fermentation gas and the vapor pressure, etc., need to be performed smoothly and promptly, and this is achieved by allowing the air to flow through the ventilation section without resistance. Although the ventilation portion is maze-shaped or in a small passage, flow resistance occurs and smooth and rapid ventilation of air and discharge of fermentation gas and vapor pressure are not obtained. However, the ventilation portion 6 according to the present invention has a required width. This is extremely effective because the inside and outside of the bag 1 are communicated in a straight line.

The size of the ventilation section 6 at the distance G from the adjacent bonding section 5 is set under optimum conditions by determining the length L of the bonding section 5 according to the article to be packaged, so that heating and cooking can be performed. For this reason, appropriate steam discharge and steaming are obtained, and the rupture of the bag 1 is prevented. In addition, the opening edge side sealing portion on the upper part of the chuck 3 is provided with an easy peeling property by applying a percoating agent or the like, and the sealing portion is peeled off due to a rise in the internal pressure of the bag so that steam is discharged, whereby the above-described method is performed. The steaming effect may be improved.

Further, the bonding strength of the bonding portion 5 is ensured by the bonding area by the length L and the width H of the bonding portion 5, and the base piece 4 is peeled off by the high pressure such as steam pressure and the bite of the chuck 3, particularly in the case of heating. Can be prevented from coming off. The bonding strength of the bonding portion 5 is of course such that it can withstand use as a normal bag with a chuck.

[0023]

As described above, according to the present invention, the ventilation inside and outside the bag and the discharge of gas and inflation pressure generated inside the bag can be promptly carried out. The optimum conditions can be easily set according to the conditions. Moreover, there is an advantage that the rupture of the bag body is prevented without peeling or disengagement of the zipper portion which degrades the function as the bag body with zipper, and the effect of using the bag body with zipper is enhanced.

[Brief description of the drawings]

FIG. 1 is a front view of a bag of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a perspective view of a main part of the present invention.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a sectional view taken along line CC of FIG. 3;

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

FIG. 7 is a sectional view taken along line DD of FIG. 6;

FIG. 8 is a cross-sectional view corresponding to the line DD of FIG. 6 showing an example of a design change;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag 2 Opening 3 Chuck 4 Base piece (or tape-shaped piece) 5 Adhesion part 6 Ventilation part

Claims (3)

[Claims] 1. A bag provided with a male and female claw type chuck made of synthetic resin, wherein a base piece or a tape-shaped piece formed on a base of the chuck is provided on an inner surface of the bag body opening.
A synthetic resin zipper-equipped bag, characterized in that an adhesive portion of an appropriate length is surface-adhered in the longitudinal direction at an interval, and the interval is a ventilation portion inside and outside the bag. 2. The synthetic resin bag with a zipper according to claim 1, wherein said adhesive portion is provided with an appropriate length and width in accordance with a required ventilation state inside and outside the bag and at intervals. body. 3. The bag body has a filling port for contents on one side of four sides of the bag body bottom constituting a mounting surface of the bag body to be placed horizontally,
3. A bag with a synthetic resin chuck according to claim 1, wherein an opening serving as a take-out port is provided on the opposite side of the mounting surface so as to be spaced from the mounting surface. body.