JPS62260658A - Bag body made of synthetic resin with occluding tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a synthetic resin bag equipped with gussets on both sides and an opening having an opening/closing function.

<Prior art> A cassette film folded in a rectangular shape is provided on both sides of two facing bag body films, and a male cassette film is provided inside the bag body film over the entire width of the bag opening. 2. Description of the Related Art A synthetic resin bag provided with an articulating tool having female articulating claws is known.

<Problems to be Solved by the Invention> This type of bag is made by welding a seal over the entire width of the bag parallel to the articulating tool above the opening edge side, and opening the bottom of the bag. Bags are made, the contents are filled from the bottom using an automatic filling machine, and the bottom is sealed and welded. There are problems in that dead zones are formed at both ends of the articulator when filling the contents, and that the contents get caught in the dead zones and are difficult to remove when taking out the contents.

In addition, seal welding above the articulating tool requires close sealing over the entire width of the bag, so the press force per unit area of the seal welded by a constant press force decreases, making the seal welding force weak and easy to peel off. . Furthermore, when an external force is applied directly to the end of the articulator from the side of the bag during transportation, the external force acts on the articulator in the axial direction. Articulating tools with male and female interlocking claws have a property that the occlusion of the L male and female claws that apply external force in the axial direction is easily released, and the five articulating tools may come off during transportation.

Means for Solving the Problems> The present invention solves the above-mentioned conventional problems, and has a structure in which V is formed on both sides of two facing bag trunk films.
It is equipped with a cassette film folded into a letter shape, and an articulating device with male and female articulating claws is provided inside the bag body film over the entire width of the bag opening, and the contents are inserted into the bottom of the bag. In a synthetic resin bag whose bottom is sealed after being filled, cut holes are provided at positions corresponding to both ends of the occlusion tool of the cassette film, and the opposite ends of the bag trunk film and the cassette are connected through the cut holes. Side weld the film to the side edge of the film, and incline at a required angle from the side weld below the bottom side of the bag than the articulator toward the articulator, intersect the articulator at right angles, and parallel to the side weld. An inner welded portion extending to the opening edge of the bag is provided, and a non-welded portion is formed on both sides of the bag opening by this inner welded portion, side welding, and IC. A seal is welded upwardly parallel to the articulating tool and intersecting with the side weld and inner weld parts.

<Function> The present invention eliminates a dead zone during filling with contents due to the inclined portion of the inner welded portion, and also facilitates removal of contents. Furthermore, by forming a non-stick part between the inner weld part and the side weld part, the length of the opening seal weld above the articulator in the bag body width direction becomes shorter, increasing the pressing force per unit area and making it stronger. Welding is achieved, and the non-welded parts act as a cushion to alleviate external forces applied from both sides of the articulating tool.
Prevents the occlusal device from coming off.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIGS. 1 and 2, 1 represents two bag trunk films facing each other. The bag body film 1 is made of a single layer of synthetic resin or a composite layer of laminated metal foil. 2 is a V welded to both sides of the bag trunk film 1.
The cassette film 3 is folded in a letter shape, and 3 is an articulating tool equipped with male and female articulating claws provided inside the bag body film 1 over the entire width of the bag width 11 at the opening of the bag. be.

In the present invention, notch holes 4 are provided in the cassette film 2 at positions corresponding to both ends of the articulating tool 3. This notch hole 4 has an arbitrary shape such as a semicircle or a square. Both side ends of the film 1 and the side ends of the cassette film 2 are side welded 5 to each other on the bag body side 4 facing each other through the notch hole 4. Therefore, the part without the notch hole 4 is the third
As shown in the figure, the bag body film 1 and the cassette film 2 are side welded 5, and the bag body body films 1 facing each other are side welded 5 at the notch hole 4 portion.

Furthermore, the lower side weld 5 on the bottom side of the bag body than the articulating tool 3
An inclined weld portion that is inclined at a predetermined angle θ with respect to the axis of the articulation tool 3 toward the articulation tool 3.

An inner weld 6 is provided with an opening weld 6h that is continuous with the inclined weld 6a, intersects the articulating tool 3 at right angles, and extends parallel to the side weld 5 to the opening edge of the bag body. The inclined welding part 6α and the side welding 5 are continuous at a radius 7a,
The inclined welded portion 6a and the opening welded portion 6b are continuous at a radius 7b. Reference numeral 8 indicates an occlusal pressure bonding portion at the intersection of the side weld 5 and the inner weld 6 and the occlusal tool 3.

Non-welded parts 9 are formed between the inner welded part 6# and the side welded part 5 on both sides of the bag opening within the folding width of the cassette film 2.

Further, a seal weld 10 is provided above the articulation tool 3 on the side of the opening edge of the bag, parallel to the articulation tool 3 and intersecting with the side weld 5 and the inner weld 6.

The bottom of the bag remains open until it is filled with contents.
After filling the contents, heat sealing 11 is performed. Reference numeral 12 denotes a hole made in the cassette film 2, through which the bag trunk film 1 is point-sealed.

(Effect of the invention> The present invention having the above structure has the following effects.

(1) By providing a cutout hole 4 in the cassette film 2, welding the bag body film 1 to each other through the cutout hole 4, and further providing an inclined welding part 6a, after filling the contents, the It has a complete box shape, allowing it to stand upright and improving its appearance.

(2) The oblique welded portion 6α eliminates dead zones at corners when filling the contents with powder, granules, etc., and when taking out the contents, the inclined welded portion 6α acts as a funnel with guidance. , the contents can be easily taken out.

(3) By forming the non-weld portion 9 on both sides of the bag opening section, which is partitioned by the inner welding section 6, the opening section 12 of the bag body formed by the articulating tool 3 can be shortened to a length of Jl-/3. , the seal welding process 0 necessary for sealing the upper part of the articulating tool 3 is the length of the opening 12. Therefore, since the minimum required length of the seal weld 10 for sealing is shortened, the pressing force per unit area in hot foil bonding increases, and air bubbles and gases generated in the seal portion during heat welding are removed and the seal is strengthened. A uniform and completely sealed seal weld 10 is obtained.

(4) Since a space is formed by the non-fitting parts 9 at both ends of the articulating tool 3, the stress applied in the axial direction of the articulating tool 3 from both ends of the articulating tool 3 is applied to the non-wearing parts 9. Provides a cushioning effect in the space to prevent occlusion-7= appliance 3 from coming off due to external forces during transportation.

(5) Since the contact points between the inclined weld 6α and the side weld 5 and the opening weld 6b are continuous with the radius 7α and 7b, the stress concentration due to the contents is dispersed and alleviated at the radius 4α and the radius, and the fracture occurs. Prevent bags.

[Brief explanation of drawings]

FIG. 1 is a front view of the present invention, FIG. 2 is a perspective view of essential parts of a cassette film, FIG. 3 is a sectional view taken along the line 1-1 in FIG. 1, and FIG. 4 is a sectional view taken along the line ff-IV in FIG. FIG. 5 is a perspective view of the present invention. 1... Bag body fusolum, 211... Cassette film, 3... Articulating tool, 4... Notch hole, 5... Side welding, 6... Inner welding part, 6α... Inclined Welded part, 6
h...opening welded part, 9...non-welded part, lO...
Seal welding.

Claims (1)

[Claims] A cassette film folded in a rectangular shape is provided on both sides of two facing bag body films, and male and female biting claws are provided inside the bag body film across the entire width of the bag opening in the width direction. In a synthetic resin bag which is provided with an articulating tool and which is filled with contents from the bottom of the bag and then seals the bottom, a notch hole is provided at a position corresponding to both ends of the articulating tool of the cassette film, and the notch is side welding both sides of the bag body film and the side edge of the cassette film facing each other through the hole, and inclining at a required angle from the side welding below the bag bottom side than the articulating tool toward the articulating tool; In addition, an inner weld portion is provided that intersects the articulation tool at right angles and extends in parallel with the side welds to the opening edge of the bag, and the inner weld portion and the side welds provide a non-woven material on both sides of the bag opening. 1. A synthetic resin bag with an articulating tool, characterized in that a welding part is formed above the articulating tool on the side of the opening edge of the bag, parallel to the articulating tool, and intersecting with the side welding and inner welding parts and sealingly welded.