Composite film and preparation method thereof

A composite film and composite roll technology, applied in chemical instruments and methods, flat products, and other household appliances, can solve the problems of environmental and human hazards, inapplicability to mass production, and difficulty in expanding production, etc., to reduce pollution , excellent mechanical properties, and good industrial promotion value

Inactive Publication Date: 2020-08-11
睿泊(中国)环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese patent CN201910311846.X discloses a preparation method of polycaprolactone antibacterial nanocomposite film. The synergistic effect of soluble silver salt and soluble iron salt triggers the chemical oxidation reaction of pyrrole on the surface of layered clay to form antibacterial powder. Polyε- Caprolactone, antibacterial powder and layered clay are prepared into films by solution casting. This process requires dissolving the polymer in an organic solvent. Solvent volatilization is harmful to the environment and human body, and the solution casting method is not suitable for batch production. chemical production
The invention uses dibutyl phthalate as a plasticizer. This method of preparing composite materials is more practical for degradable medical devices, but it is difficult to scale up production to the field of films
[0007] To sum up, at present, the composite flexible packaging in the industrial and pharmaceutical industries is facing the problem of difficult recycling and separation after the end of the service life, and the use of degradable materials to replace some components of the composite flexible packaging to achieve automatic separation of different components due to degradation Research and application are important ways to solve this problem

Method used

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  • Composite film and preparation method thereof
  • Composite film and preparation method thereof
  • Composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A composite membrane has an A / B / A three-layer structure.

[0057] The A layer is modified polyε-caprolactone, including the following components by weight: 60 parts of polyε-caprolactone, 5 parts of polylactic acid-glycolic acid copolymer, poly(ε-caprolactone -2 parts of L-lactide) random copolymer, 2 parts of compatibilizer, 0.5 parts of Fischer-Tropsch wax, 2 parts of stearyl stearate, 12 parts of modified nano-calcium carbonate, 2 parts of hyperdispersant, 4 parts of montmorillonite, 5 parts of thermoplastic starch, 4.5 parts of acetyl tributyl citrate, 0.3 parts of chitosan, 15 parts of antistatic agent, triethylene glycol bis[3-(3-tert-butyl-5 -methyl-4-hydroxyphenyl) propionate] 0.3 parts.

[0058] The thickness of layer A is 80 μm.

[0059] The preparation steps of described compatibilizer are as follows:

[0060] Mix 60 parts by weight of polyε-caprolactone (or polylactic acid-glycolic acid copolymer), 5 parts by weight of monomer glycidyl methacrylate, and 0...

Embodiment 2

[0073] A composite film, the composite film has an A / B / A / C four-layer structure.

[0074] The A layer is modified polyε-caprolactone, including the following components by weight: 150 parts of polyε-caprolactone, 30 parts of polylactic acid-glycolic acid copolymer, poly(ε-caprolactone -L-lactide) random copolymer 15 parts, glycidyl methacrylate grafted polyε-caprolactone 11 parts, glycidyl methacrylate grafted polylactic acid-glycolic acid copolymer 3 parts, sheet 0.15 parts of graphite, 0.15 parts of stearic acid, 22 parts of modified nano calcium carbonate, 4 parts of hyperdispersant, 9 parts of montmorillonite, 16 parts of thermoplastic starch, 15 parts of polyethylene glycol, 1.1 parts of chitosan, 15 parts of electrostatic agent, 0.1 part of epigallocatechin gallate.

[0075] The thickness of the A layer was 15 μm.

[0076] The preparation steps of glycidyl methacrylate graft poly-ε-caprolactone / glycidyl methacrylate graft polylactic acid-glycolic acid copolymer are as fo...

Embodiment 3

[0094] A composite film has a five-layer structure of A / B / A / C / A. Three layers of A are used to protect layers B and C and enhance the sealing performance. The structural schematic diagram of the multilayer composite film is as follows figure 1 shown.

[0095] The A layer is modified polyε-caprolactone, including the following components by weight: 120 parts of polyε-caprolactone, 20 parts of polylactic acid-glycolic acid copolymer, poly(ε-caprolactone -10 parts of L-lactide) random copolymer, 9 parts of glycidyl methacrylate grafted polyε-caprolactone, 9 parts of glycidyl methacrylate grafted polylactic acid-glycolic acid copolymer, cyclo 2 parts of oxygenated soybean oil, 4 parts of ethylene bis stearamide, 20 parts of modified nano calcium carbonate, 6 parts of hyperdispersant, 11 parts of montmorillonite, 20 parts of thermoplastic starch, 15 parts of diacetyl epoxy vegetable oil glyceride, 3 parts of chitosan, 20 parts of antistatic agent, 0.3 part of anthocyanin.

[009...

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Abstract

The invention discloses a composite film. The composite film has an A/B/A, A/B/A/C or A/B/A/C/A layer structure, the A layer is modified poly epsilon-caprolactone, the B layer is at least one of aluminum or paper, and the C layer is at least one of polyamide, polyester, polyolefin and enol copolymer. The composite film has good heat sealability, good tensile mechanical properties and high peel strength. The composite material comprises biodegradable modified poly epsilon-caprolactone (layer A) as a heat sealing layer, a sealing layer and an outer protective layer. After the use period of the composite flexible package material ends, the modified poly epsilon-caprolactone with excellent biodegradability can be degraded within a certain period of time, so that all layers forming the composite material are separated due to connection loss, the problem that the composite flexible package material is difficult to recycle is solved, and the ecological environment effect is reduced through adegradation, classification and recycling technology.

Description

technical field [0001] The invention relates to the technical field of composite packaging materials, in particular to a composite film and a preparation method thereof. Background technique [0002] Composite flexible packaging is widely used in engineering plastics, liquid food and industries sensitive to humidity and oxygen, food and pharmaceutical industries. Since it is difficult to make packaging with a single material to meet all the requirements of the product for humidity, oxygen control and mechanical strength, people use two or more packaging materials to make composite flexible packaging in a certain way, using paper, aluminum foil, Various bags, boxes, sleeves, packages, etc. made of composites of fibers and plastic films belong to composite flexible packaging. [0003] Paper-aluminum-plastic composite flexible packaging materials are mainly based on cardboard, polyethylene plastic and aluminum foil, and also contain a small amount of ink, paint, adhesives and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/085B32B15/09B32B15/20B32B27/06B32B27/20B32B27/28B32B27/32B32B27/36B32B33/00C08J5/18C08L67/04C08K13/06C08K9/06C08K9/04C08K3/26B29D7/01
CPCB29D7/01B32B15/085B32B15/09B32B15/20B32B27/06B32B27/20B32B27/28B32B27/32B32B27/36B32B33/00B32B2307/31B32B2307/50B32B2307/7242B32B2307/7265C08J5/18C08J2367/04C08J2467/04C08K9/04C08K9/06C08K13/06C08K2003/265C08K2201/011
Inventor 贺晓艳安家成张迎波安家贵肖华平
Owner 睿泊(中国)环保科技有限公司
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