JPS609161Y2 - Synthetic resin film bag making - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bag formed of a synthetic resin film, and its purpose is to prevent damage to the edge of the bag.

A bag formed of a synthetic resin film has a problem in that when the opening is opened, stress tends to concentrate at the welded parts at both ends, and the bag is easily damaged from the welded ends.

The bag of the present invention has a cover extending in the extending direction of the side wall over the entire length of the opening of one side wall of the packaging body formed by welding the edges of two stacked synthetic resin films to each other, and the opening edge of the other side wall. It has a protrusion extending parallel to the cover and welded to the cover at the end thereof, and the protrusion and the mouth edge are joined by a concave curve.

An example of the bag according to the present invention is shown in the drawing, which is a bag for storing small items such as cosmetics. 1 is a main body made of soft vinyl chloride or other synthetic resin film, which is made by overlapping two films. , are formed by welding their peripheral edges together.

Reference numeral 2 denotes a cover formed by extending one side wall of the main body 1 from its mouth, and has a triangular shape with the side facing the mouth of the main body 1 inclined.

Then, the cover 2 is bent so as to overlap the main body 1, and the end on the wide side side is made long enough to cover the bottom of the main body 1 and fold over the side wall of the main body 1 having the cover 2, A pair of coupling tools 3 such as hooks that engage with each other are attached to the end portions and the corner portions of the main body 1 that overlap with the end portions.

Reference numeral 5 denotes a protrusion extending parallel to the cover 2 at both ends of the mouth edge of the side wall of the main body 1 where the cover 2 does not exist, and welded to the cover. At the provided end, the corner of the joint between the protrusion 5 and the mouth rim is filled with a concave curved portion 4, and at the other end, a semicircle provided at the mouth rim continues from the base of the protrusion 5. The concave curved portion 4 is constituted by a concave portion 6 having a shape.

In this bag, for example, cosmetics, toiletries, etc. are placed in the main body 1, the cover 2 is folded over the main body 1, and the cover 2 is fixed with a connector 3 to close the opening of the main body 1, and the contents are Use it so that it does not come out.

As in this embodiment, the cover 2 has a triangular shape, and its wide part is wide enough to reach the bottom of the main body 1, and a pair of fasteners such as hooks are attached to the tip of the cover 2 and the corner of the bottom of the main body 1. 3, it is unlikely that objects will enter the corners of the bag 1, so it will be easier to pressurize the corners when connecting the connector 3.
In addition, it is possible to eliminate the risk of deforming objects inside the main body 1.

If one side of the concave curved portion 4 is formed with a concave portion 6, the mouth of the main body 1 can be opened easily due to the concave portion 6, so that the stored items can be put in easily, and the mouth of the main body 1 can be opened more easily. Damage can be avoided.

As mentioned above, the bag of the present invention has the protruding parts 5 at both ends of the mouth edge of one side wall of the main body 1, and the concave curved part 4 is formed at the joint between the protruding part and the mouth edge. When the mouth of the main body 1 is opened by holding the mouth rim, the force acting on the end of the mouth rim is distributed over a long range of the concave curve 4 and stretches the waist surrounding curve 4. act.

Furthermore, since there are no edges on both ends of the mouth rim where force is applied when taking out and taking out stored items, there is no edge where stress concentration tends to occur due to the concave curved portion 4, so it is possible to prevent the ends of the mouth rim from being damaged. , making it possible to use the bag for a long period of time.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view with the cover open, FIG. 2 is a sectional view thereof, and FIG. 3 is a front view with the cover closed. 1...Main body, 2...Cover, 3...
...Connector, 4...Concave bent part, 6...
・Protrusion, 6 recesses.

Claims (1)

[Scope of utility model registration request] A cover extending in the direction of extension of the side wall is provided along the entire length of one side wall of the housing body, which is formed by welding the edges of two stacked synthetic resin films to each other, and a cover is provided at the end of the other side wall. A synthetic resin film bag having a protrusion extending parallel to the cover and welded to the cover, and a joint between the protrusion and the mouth edge being joined by a concave curve.