Self binding film air checking packaging material J type bag and its manufacturing method

Abstract

The present invention relates to a kind of self-adhesive film non-return air packaging material J-type bag and its production method. Said J-type bag is made up by using four layers of plastic films. Said four layers of plastic films are locally heat-sealed and adhered so as to form a space capable of storing air. It utilizes the viscosity of film self-body and action of air pressure to make the air can not be leaked and can be durably stored in said J-type bag.

Description

technical field [0001] The invention relates to a self-adhesive non-return air packaging material, which can be used in fragile products such as electronic products, instruments and meters, glassware, and various products that require safety protection. It has the characteristics of shock resistance, extrusion resistance, drop resistance, moisture resistance, etc. With a series of excellent properties, it can be used as filling material for article packaging, as inner lining of article packing box, and as outer packing bag of article. Background technique [0002] Traditional packaging materials such as polychrome, EPE, paper plastic and other materials are often difficult to provide when items need safer protection. Air has been used as a packaging medium. When air and plastic film are combined to form a packaging material, it has many advantages, such as a series of excellent properties such as shock resistance, extrusion resistance, drop resistance and moisture resistance...

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Problems solved by technology

[0003] However, the above-mentioned air packaging materials generally adopt traditional methods, such as balloons, which are tied with ropes after inflation to prevent air leakage. There are also so-called check valves, check valves, one-way valves, stop valves, safety valves, and film A series of valves or plugs, plugs, etc., such as valves, check valves, mechanical valves, etc., have certain limitations or inconveniences in production or use.

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