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: 2013-09-04
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
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Effect test

Embodiment 1

[0026] Example 1 Adsorptive polar membrane material

[0027] The polar membrane material with adsorption is a composite membrane structure, which is 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 added with maleic anhydride grafted in EVA. One layer of PE substrate and one layer of self-adhesive layer are used as the most basic polar film material structure with adsorption.

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

Embodiment 2

[0031] Example 2 One-way check valve

[0032] like figure 2 As shown in the figure, the one-way check valve is composed of two polar film materials 21 and 22 with adsorption properties with one side of the self-adhesive layer facing each other. . The two polar film materials 21 and 22 are both melted and thermally integrated with the plastic films 11 and 12 constituting the bag body 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 inlet channel between the two polar film materials will not be melted and bonded together during heat sealing. When inflating the body of the inflatable bag, the air flows along the figure 2 The middle air-filled 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 two polar fi...

Embodiment 3

[0034] Example 3 Inflatable bag

[0035] Inflatable bag structure such as figure 2 As shown, it includes a bag body formed by two wide two-layer plastic films 11, 12 by heat sealing, and an air bag one-way check valve formed by two polar film materials 21, 22 with adsorption properties.

[0036] The above-mentioned air column C, which can store media such as air, can be a separate space. It can also be composed of 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 general channel 7 at the top, and the flute-shaped channel 7 communicates with each independent inflatable space through the one-way check valve K, and forms a plurality of air inlets during inflation. connected air columns. Through different folding and secondary heat sealing, air column bags of 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. The inflatable bag can be used as a packing material for items after being inflated, and can also be used as a six-sided protective pad inside the item packing box. Background technique [0002] Many commodities, especially electronic products, fragile products, etc., need to use foamed polystyrene, polyethylene bubble pads, etc. to pad between the packaging box and the commodity during storage and transportation, or use foamed materials to directly package the commodity to achieve shock resistance. , Anti-extrusion, anti-impact effect, to avoid damage to the product during storage and transportation. Traditional expanded polystyrene (EPS) and polyethylene foam (EPE) products must be foamed or processed by the manufacturer before they can be transported to users. The...

Claims

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Application Information

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Patent Type & Authority Applications(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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