JPH02282073A - Package by heat shrinkable synthetic resin film - Google Patents

Abstract

PURPOSE:To prevent the lowering of film strength at a perforated part by perforating one side edge of film and making static electricity sealing and seal cutting of the film. CONSTITUTION:One side edge of a heat shrinkable synthetic resin film 1 is perforated in forward direction and static electricity is applied to the overlapping side edges of the film 1 so as to seal the overlapping parts. When this film is wrapped into a tubular form according to an envelope forming pattern, the perforated part 2 is so arranged as to be located in a static seal part 3 and, after insertion of its contents, the package is closed with a seal cut 4 at the front and back, followed by further heat shrinking. This prevents the perforation from being enlarged upon heat shrinking and the film from being torn off starting at the perforated part 2 during handling.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a package made of a heat-shrinkable synthetic resin film that can be easily opened.

[Conventional technology] In order to easily open the package using a conventional heat-shrinkable synthetic resin film, a perforated resin for opening is attached to an appropriate position on the film, and then the film is heat-shrinked. There is something.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional technology, the perforation holes enlarge due to the shrinkage stress of the film during heat shrinkage, and the film strength at the perforated area decreases, so that the perforation may occur during handling. There was a major problem in that the film was cut off from the bag and the bag was torn.

Means for Solving Problem c] The present invention perforates one edge of a heat-shrinkable synthetic resin film along the flow direction, and eliminates static electricity at the overlapping portion of both edges of the film. When applying a so-called electrostatic seal that brings the overlapping parts into close contact with each other, when packaging envelopes in a cylindrical shape, make sure that the Olasian processed part of the bar 7 is placed on the electrostatic seal part, and then insert the packaged item. After that, the problems of the prior art described above are solved by performing front and rear sealing by fusing seals and further heat shrinking.

[Implementation σi] Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a perspective view showing a package of the present invention, and shows a heat-shrinkable synthetic resin film 1! A package 5 is formed by applying a perforage control process 2 to the part, applying an electrostatic seal 3, and then applying a fusing seal 4.

FIG. 2 is a partial sectional view taken along line A-A of the heat-shrinkable synthetic resin film in FIG. 1, and FIGS.
An example of perforation processing that is different from the diagram is shown,
The perforage treatment should be applied within the width of the electrostatic seal, but in order to improve opening performance, it must be applied within the width of the electrostatic seal and at the edge of the film. It is better not to get too close.

[Effects of the Invention] As described above, in the packaging body of the present invention, by perforating the film of the electrostatic sealing part, the perforated part is tightly attached to the other film of the electrostatic sealing part by static electricity. Therefore, the perforation holes do not expand during heat shrinkage, and the bag does not break due to the film being cut from the perforated part during handling.

Also, when opening the package, pull the film to cut the perforated part.
Cutting of the film occurs from the perforated portion of the electrostatic seal, allowing for easy opening. Furthermore, by attaching a label or the like to an appropriate position on the film and pulling the film using the label, the package can be opened more easily.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a package to which an embodiment of the present invention is applied, FIG. 2 is a partial sectional view taken along line A-A of the heat-shrinkable synthetic resin film in FIG. 1, and FIG. Figure 4 shows
FIG. 3 is a partial cross-sectional view of an electrostatic seal portion showing an example of perforation processing different from that shown in FIG. 2; Heat-shrinkable synthetic resin film perforation control processing section Electrostatic seal section Melting seal section Packaging body

Claims (1)

[Claims] At least one edge of a heat-shrinkable synthetic resin film is perforated along the flow direction, and when the film is pasted into a cylindrical envelope and packaged with an electrostatic seal,
1. A packaging body characterized in that the perforation processing part is located at the electrostatic sealing part, and then, after inserting an object to be packaged, front and rear sealing is performed using a fusing seal, and the packaging body is further heat-shrinked.