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Polar membrane material with adsorptivity, unidirectional check valve and air bag

A film material and adsorption technology, applied in the field of inflatable bag packaging materials, can solve the problems of uneven distribution, watermark bubbles, poor sealing effect, etc. Effect

Active Publication Date: 2014-03-26
GREEN PACKAGING TECH (JIANG SU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of poor sealing effect of the one-way check valve of the inflatable bag at present, based on the long-term research of the inventor, the present invention changes the traditional inherent concept that can only be improved from the valve body structure, and provides a new type with adsorption Polar membrane materials, starting with self-priming membrane materials to improve the airtightness of this type of one-way check valve
[0006] After long-term experimental research, the applicant found that the reason for the poor sealing effect of the existing polar film materials is that the amount of EVA added to PE is very small, resulting in uneven distribution, which naturally causes uneven adsorption distribution, resulting in two films. There will be watermarks and air bubbles when they are adsorbed together, which is the reason for the poor sealing effect

Method used

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  • Polar membrane material with adsorptivity, unidirectional check valve and air bag
  • Polar membrane material with adsorptivity, unidirectional check valve and air bag
  • Polar membrane material with adsorptivity, unidirectional check valve and air bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 has adsorptive polar membrane material

[0027] Adsorptive polar membrane material is a composite membrane structure composed of multiple layers, such as figure 1 As shown, a self-adhesive layer 5 is compounded on one side of the PE substrate 6 to form a single-sided self-adsorbing film material. The self-adhesive layer is PE grafted with maleic anhydride added to EVA. One layer of PE substrate and one layer of self-adhesive layer are the most basic structure of polar membrane material with adsorption.

[0028] Further, the PE substrate can also use multi-layer composite materials, such as figure 1 As shown, the anti-aging protective layer 1 is composed of LDPE layer 4, HDPE layer or MLDPE layer 3, LDPE layer 2, and LDPE+TNPP from the side composited with self-adhesive layer 5. Among them, the HDPE layer or MLDPE layer 3 has higher material strength and rigidity than LDPE, so it can make this polar film material have moderate rigidity, making the film sm...

Embodiment 2

[0031] Embodiment 2 one-way check valve

[0032] Such as figure 2 As shown, the one-way check valve is composed of two absorbing polar film materials 21, 22 with one side of the self-adhesive layer facing each other. The absorbing polar film materials 21, 22 all adopt the scheme in Example 1. . The two polar film materials 21, 22 are melted and heat-bonded with the plastic films 11, 12 constituting the bag respectively through the heat-sealing part K in the figure. The opposite sides of the two polar film materials are printed with high-temperature resistant ink, so that the parts forming the air intake channels between the two polar film materials will not be melted and bonded together during heat sealing. When inflating the inflatable bag, the air along figure 2 The inflatable channel T enters the hidden sealing part printed with ink between the polar film materials 21 and 22, and the air pressure overcomes the adsorption force between the self-adhesive layers of the tw...

Embodiment 3

[0034] Embodiment 3 inflatable bag

[0035] Inflatable bag structure such as figure 2 As shown, it includes a bag made of two wider two-layer plastic films 11, 12 through heat sealing, and an inflatable bag one-way check valve formed by two absorbing polar film materials 21, 22.

[0036] The air column C that can store media such as air may be a separate space. It can also be constructed for multiple independent inflatable spaces, such as image 3 As shown, the above-mentioned multiple air columns C that can store media such as air have a flute-shaped air intake main passage 7 at the top, and the flute-shaped passage 7 communicates with each independent inflation space through the one-way check valve K, forming multiple air-filled spaces when inflated. connected columns of air. Through different folding and secondary heat sealing, air column bags with different shapes and functions can be formed.

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Abstract

The invention discloses a polar membrane material with adsorptivity, a unidirectional check valve and an air bag. The polar membrane with adsorptivity forming the air bag and the unidirectional check valve is prepared by compositing a self-adhesive layer on one side of a PE substrate, and the self-adhesive layer is made of EVA added with a maleic-anhydride-grafted PE. The material is good in adsorption uniformity, and can improve airtight effect of the conventional unidirectional check valves.

Description

technical field [0001] The invention relates to a packaging material, in particular to an inflatable bag packaging material used for moisture-proof, shock-proof, extrusion-proof and impact-proof of commodities. After being inflated, the inflatable bag can be used as filling material for article packaging, and can also be used as a six-sided protective pad inside the article packing box, and it can also be used as the outer packing bag of the article to directly make the retail packaging of the product. Background technique [0002] Many commodities, especially electronic products and fragile products, need to use expanded polystyrene, polyethylene bubble pads, etc. between the packing box and the commodity during storage and transportation, or directly pack the commodity with foaming materials to achieve shockproof , Anti-extrusion, anti-shock effects, to avoid damage to goods during storage and transportation. Traditional expanded polystyrene (EPS) and polyethylene foam (E...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09J123/08C09J11/08C09J11/06B32B27/32B65D81/03F16K15/14
Inventor 须建明
Owner GREEN PACKAGING TECH (JIANG SU) CO LTD
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