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Antibacterial composite film used for vacuum packing of household articles and preparation method thereof

A technology of vacuum packaging and composite film, which is applied in the direction of packaging, transportation and packaging, and special packaging objects under vacuum/special atmosphere, which can solve the problems of poor folding fatigue resistance, easy deformation of composite film, and easy air leakage, etc. Good effect, good vacuum sealing effect, excellent sealing performance

Active Publication Date: 2013-04-24
GUANGZHOU NOVEL PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the composite films for household products used in the market do not have antibacterial properties, poor folding fatigue resistance, and the composite films are easily deformed and easy to leak.

Method used

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  • Antibacterial composite film used for vacuum packing of household articles and preparation method thereof
  • Antibacterial composite film used for vacuum packing of household articles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A preparation process of a novel antibacterial composite film that can be used for vacuum packaging of household articles is as follows: 1) preparation of antibacterial heat-sealing film; 2) printing process of biaxially stretched polyamide film; 3) extrusion compounding process.

[0049] The preparation process of the antibacterial heat-sealing film includes a batching process, a material plasticizing extrusion process, an inflation traction process, an air ring cooling process, a herringbone splint process, a rotating traction roller traction process, a corona treatment process, and a film winding process.

[0050] In the feeding process:

[0051] The outer layer adopts the formula weight ratio blending of LDPE:LLDPE=1:1;

[0052] The middle layer is blended with a formula weight ratio of HDPE:LDPE=1:1;

[0053] The inner layer is blended in a formula weight ratio of LDPE, MDPE, anti-blocking agent and antibacterial agent=3:1:0.05:0.05;

[0054]In the material plast...

Embodiment 2

[0057] The outer layer is blended with a formula weight ratio of LDPE:LLDPE=1:1.5;

[0058] The middle layer is blended with a formula weight ratio of HDPE: LDPE=1: 1.0;

[0059] The inner layer is blended with LDPE, MDPE, opening agent, antibacterial agent = 3: 1.5: 0.05: 0.08, and the rest are the same as in Example 1.

Embodiment 3

[0061] The outer layer is blended with a formula weight ratio of LDPE:LLDPE=1:1.5;

[0062] The middle layer is blended with a formula weight ratio of HDPE: LDPE=1: 1.5;

[0063] The inner layer is blended in a formula weight ratio of LDPE, MDPE, anti-blocking agent and antibacterial agent=3:1.5:0.05:0.08;

[0064] In the extrusion compounding process: when the resin temperature is controlled at 340°C and the circulating cooling water temperature is controlled at 18°C ​​in the extrusion hot-melt film process, the peel strength is better after compounding with the coated base film.

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Abstract

The invention discloses an antibacterial composite film used for vacuum packing of household articles and a preparation method thereof. The composite film consists of a biaxially oriented polyamide film outer layer, a coating adhesion layer, and an antibacterial heat sealing layer. The preparation method comprises the following steps of: performing extrusion by using a three-layer co-extruder to obtain the antibacterial heat sealing layer; printing the outer film; and compounding the outer layer and the antibacterial heat sealing layer by using an extrusion compounding machine. The antibacterial composite film has excellent puncture resistance, compression strength and sealing property, good vacuum effect and antibacterial effect, and can used for storing the household articles and other antibacterial products.

Description

Technical field: [0001] The invention relates to the field of plastic flexible packaging composite film and its production technology, in particular to an antibacterial composite film which can be used for vacuum packaging of household articles and a preparation method thereof. Background technique: [0002] With the improvement of national material living standards, people have new ideas about the storage conditions of household items, such as seasonal quilts, pillows, clothing, etc., requiring that household items take up less space after collection and can be kept clean and hygienic for a long time. At present, the composite films for household products used in the market do not have antibacterial properties, poor folding fatigue resistance, and the composite films are easily deformed and easy to leak. Therefore, there is an urgent need for a composite film with excellent vacuum sealing and antibacterial properties for the collection of household items. By vacuuming, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/34B32B27/30B32B27/18B32B7/12B65D81/20
Inventor 鲍祖本郑朝晖许立杰程万顺罗来云王卫民
Owner GUANGZHOU NOVEL PACKAGING
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