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Antibacterial high-oxygen barrier PE composite film and preparation method thereof

A composite film and high oxygen technology, applied in the field of packaging materials, can solve the problems of moisture resistance of PE composite film and poor adhesion between oxygen barrier films, and achieve the effects of low cost, increased compatibility, and improved processing performance.

Active Publication Date: 2020-04-17
山东亚新塑料包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an antibacterial high oxygen barrier PE composite film and its preparation method in view of the deficiencies of the PE composite film in the prior art in terms of moisture resistance, oxygen barrier properties, and poor bonding between film layers.

Method used

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  • Antibacterial high-oxygen barrier PE composite film and preparation method thereof
  • Antibacterial high-oxygen barrier PE composite film and preparation method thereof
  • Antibacterial high-oxygen barrier PE composite film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] An antibacterial high oxygen barrier PE composite film, comprising a PE film layer and a PVA film layer:

[0044] PE film layer comprises the raw material of following parts by weight:

[0045] 100 parts of linear low density polyethylene;

[0046] 5 parts of low-density polyethylene;

[0047] Low density PE-g-MAH 5 parts;

[0048] 12 parts of antibacterial and antistatic additives.

[0049] PVA film layer comprises the raw material of following parts by weight:

[0050] 100 parts of polyvinyl alcohol resin;

[0051] 4 parts of silicone oil;

[0052] 3 parts of propylene glycol;

[0053] 45 parts of polyethylene glycol;

[0054] 2 parts talcum powder;

[0055] Polyethylene wax 10 parts.

[0056] The materials of the outer PE film layer, the middle PVA film layer and the inner PE film layer are heated and melted by a twin-screw extruder, and the heating temperature of the PE film layer 1-7 is as follows: 160°C, 170°C, 175°C , 180°C, 185°C, 175°C, 170°C, the twin-...

specific Embodiment 2-6

[0057] Specific embodiment 2-6, other are with specific embodiment 1, difference is following table:

[0058]

[0059]

[0060] The antibacterial antistatic additive used in above-mentioned embodiment 1-6 is to prepare by following method:

[0061] (1) Dissolve a mixture of 1.2mol methoxy-heptapolyethylene glycol-propionic acid (B), 1.2mol dicyclohexylcarbodiimide and 2wt% 4-dimethylaminopyridine in 10mol N,N-di Methylformamide was placed in a constant pressure dropping funnel, slowly added dropwise to N,N-dimethylformamide containing 1mol guanidine (A), at room temperature, magnetically stirred for 10h, allowed to stand, filtered, and decompressed Distillation, vacuum drying, to obtain the intermediate product I (IR: 1648cm -1 : the presence of -C=O of the amide bond; 3318cm -1 、1625cm -1 :-NH exists);

[0062] (2) Dissolve 1 mol I and 1.2 mol maleic anhydride (C) in an organic solvent, heat and stir at 40°C for 5 hours, then cool down, distill the reaction product ...

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Abstract

The invention belongs to the field of packaging materials, and particularly relates to an antibacterial high-oxygen barrier PE composite film and a preparation method thereof. The antibacterial high-oxygen barrier PE composite film sequentially comprises a PE film layer, a PVA film layer and a PE film layer from outside to inside and is prepared through three-layer co-extrusion compounding. The antibacterial high-oxygen barrier PE composite film has excellent antibacterial and antistatic properties while effectively improving the poor moisture resistance, oxygen barrier property and film interlayer binding force of an existing PE composite film, has the advantage of good comprehensive performance, has wide application space, and is especially suitable for food packaging and medical treatment.

Description

technical field [0001] The invention belongs to the field of packaging materials, and in particular relates to an antibacterial high-oxygen barrier PE composite film and a preparation method thereof. Background technique [0002] Most of the plastic wraps sold on the market are made of polyethylene (PE). PE is a polymer material with simple structure, low cost and good mechanical properties. The raw materials are processed by blending, injection, extrusion and blow molding. The method is formed, and is widely used in industry and agriculture, food packaging and daily life. PE is a polymer formed by the polymerization of ethylene monomers. It is a typical thermoplastic and is an odorless, tasteless, non-toxic, flammable white powder. The crystallinity, relative molecular weight and other factors of PE have a certain influence on its physical and mechanical properties. It has excellent mechanical properties, good water vapor barrier, high impact strength, light weight and goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/18B29C48/08B29B9/06B29C48/92B29L7/00B29L9/00
CPCB29B9/06B29L2007/00B29L2009/00B29C48/08B29C48/18B29C48/92B29C2948/92704
Inventor 霍艳苓
Owner 山东亚新塑料包装有限公司
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