JP3021719U - Wrapping paper bag - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To recycle only a kraft paper bag body by easily removing the polyethylene film of the bag body, which is a three-layered bag with a polyethylene film interposed between two inner and outer paper bag bodies. -Providing a paper bag for packaging powder and granules such as sugar and granulose. SOLUTION: The polyethylene film, which is interposed between the inner and outer two-layer bag bodies, is folded and adhesively closed together with both the inner and outer bag bodies in a state where the front ends of the polyethylene films are protruded from the bag body, and the rear end of the polyethylene film is a bag. A length that does not reach the opening on the other side of the main body and none.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention mainly relates to a paper bag used for packaging powder and granular material such as beats and granulated sugar.

[0002]

[Prior art]

 This type of conventional paper bag has a three-layer structure with a moisture-proof polyethylene film in the middle of a tubular body made of two layers of kraft paper, and the inside of the upper and lower ends of each layer is made by glue on the upper part of the production. Adhered to each other. In addition, after accommodating sugars and the like, the polyethylene film is also adhered together when the opening is closed. Therefore, when the used bags are recycled, there is a drawback that the removal of the polyethylene film is troublesome and economically problematic.

[0003]

[Problems to be solved by the device]

 SUMMARY OF THE INVENTION An object of the present invention is to provide a packaging paper bag of the above-mentioned three-layer packaging paper bag, which does not require an intermediate polyethylene film to be adhered with a spot glue and can be easily and quickly removed.

[0004]

[Means for Solving the Problems]

 The means of the present invention are as follows. A polyethylene film is interposed between the inner and outer bag bodies of the inner and outer two-layer bag body made of kraft paper and the like, with the polyethylene film tip protruding slightly from the opening of the bag body together with the inner and outer bag bodies. The polyethylene film has a length that does not reach the opening on the other side of the bag body and hot melt is applied to the stepped cut portion provided in the opening.

[0005]

[Action]

 By opening the upper end opening of the bag body and taking out the contents, by pulling the polyethylene film 2 protruding from the bag body 1, the polyethylene film can be pulled out and separated from the bag body very easily.

[0006]

【Example】

 In the figure, reference numeral 1 is a bag body formed of two layers of kraft paper, the left and right sides of which are gusset-folded as shown in FIG. 2, and a polyethylene film 2 is interposed between the inner bag body 1a and the outer bag body 1b. (At this time, the bag body 1 is interposed without being glued as in the conventional case.) At the open end of the bag body 1, the tip 3 of the polyethylene film 2 is connected to the front end 4 of the inner bag 1a and the outer bag 1b. It is made to project outward from the tip portion 5 of. In this state, it is folded back once as shown in FIG. 4, and further folded back from the folded portion 6 as shown in FIG. 3, and then the decorative paper 8 to which the cut tape 7 is attached is adhered and sealed across the folded portion. In the case of unsealing, as shown in FIG. 1, one end 7a of the cut tape 7 is pulled to cut the decorative paper 8 and then the folded back portion is extended to easily unseal. After use, the protruding polyethylene film 2 can be pulled out easily from the bag body 1 by pulling. As shown in FIG. 5, the rear end of the bag body 1 is formed by cutting the rear ends of the inner bag 1a and the outer bag 1b ahead of the rear end portion 9 of the polyethylene film 2 into a step shape. A heat-melting adhesive 11 is applied to prevent the bags from shifting. Then, after accommodating the granulated sugar or the like, the stepped portion 10 is folded back and heat-bonded to the bag body 1 to seal it.

[0007]

[Effect of device]

 According to the present invention, the polyethylene film projects from the open upper end of the bag body, and the lower end of the polyethylene film contacts the folded adhesive bottom of the bag body without being glued with the spot glue as in the conventional case. Since the length is not so long, it can be easily pulled out and separated from the bag main body by pulling the protruding part of the polyethylene film after using the bag main body, which is useful for preventing pollution without the trouble of recycling the bag. Is. Also, by applying a heat-melting adhesive to the stepped portion formed on the lower end of the bag body, both the inner and outer bag bodies of the bag body are securely fixed, so that each layer is attached by spot glue as in the past. It is not necessary and is extremely advantageous in manufacturing.

[Brief description of drawings]

1 is a plan view

2 is a partially enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is an enlarged sectional view taken along line BB of FIG.

FIG. 4 is an enlarged cross-sectional view during folding back of FIG.

5 is an enlarged cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

 1 Bag Main Body 1a Inner Bag 1b Outer Bag 2 Polyethylene Film 3 Film Tip 4 Inner Bag Tip 5 Outer Bag Tip 9 Polyethylene Film Rear End 10 Step 11 Hot Melt Adhesive

Claims (1)

[Scope of utility model registration request] 1. A polyethylene film is interposed between the inner and outer bag bodies of a two-layer inner and outer bag body made of kraft paper or the like, and the end of the polyethylene film is slightly projected from the opening of the bag body. The bag was folded together with both bags and adhesively closed, and the rear end of the polyethylene film had a length that did not reach the opening on the other side of the bag body. Characteristic wrapping paper bag.