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PET (polyethylene terephthalate) composite film for quick-frozen food soft package and preparation method thereof

A composite film and flexible packaging technology, applied in the field of packaging materials, can solve the problems of high labor intensity, complex production process, organic solvent pollution, etc., and achieve the effects of reducing production cost, simple process and good low temperature resistance.

Inactive Publication Date: 2018-02-13
河南大有塑业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used plastic flexible packaging production processes are aimed at certain products and certain performances, and have their own limitations. At the same time, there are generally complex production processes, large waste of raw materials, long production cycles, high labor intensity, organic solvent pollution, Due to the problem of poor working environment, it is necessary to develop a green manufacturing process that meets the requirements of green, safety and environmental protection, so as to meet the market demand for new and high-grade composite flexible packaging functional materials

Method used

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  • PET (polyethylene terephthalate) composite film for quick-frozen food soft package and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A PET composite film for flexible packaging of quick-frozen food. The composite film is composed of a PET layer, an aluminum foil layer and an LLDPE layer from the surface to the inside. Agent; In parts by weight, the water-based polyurethane adhesive consists of 110 parts of blocked alicyclic polyisocyanate, 40 parts of polyether glycol, 8 parts of dimethylol propionic acid, 30 parts of polypropylene glycol, 15 parts Parts of polytetramethylene glycol ether, 5 parts of ammonia water, 70 parts of deionized water, 15 parts of sodium ethylenediaminoethanesulfonate, 5 parts of modified epoxy resin, 3 parts of active group compound, 1 part of compound Additives, 10 parts of water-based polyacrylate, 5 parts of modified tackifier emulsion and 3 parts of modified reinforcing agent.

[0025] The modified epoxy resin is formed by mixing bisphenol A epoxy resin and aliphatic epoxy resin with a weight ratio of 3:1; the active group compound is polyetheramine with a molecular weig...

Embodiment 2

[0029] A PET composite film for quick-frozen food flexible packaging. The composite film is composed of a PET layer, an aluminum foil layer and an LLDPE layer from the surface to the inside. Agent; In parts by weight, the water-based polyurethane adhesive consists of 120 parts of blocked alicyclic polyisocyanate, 55 parts of polyether glycol, 10 parts of dimethylol propionic acid, 40 parts of polypropylene glycol, 20 parts Parts of polytetramethylene glycol ether, 10 parts of ammonia water, 90 parts of deionized water, 20 parts of sodium ethylenediaminoethanesulfonate, 8 parts of modified epoxy resin, 5 parts of active group compound, 3 parts of compound Additives, 20 parts of water-based polyacrylate, 8 parts of modified tackifier emulsion and 4 parts of modified reinforcing agent.

[0030]The modified epoxy resin is formed by mixing bisphenol A epoxy resin and aliphatic epoxy resin with a weight ratio of 3:1; the active group compound is polyetheramine with a molecular weigh...

Embodiment 3

[0034] A PET composite film for quick-frozen food flexible packaging. The composite film is composed of a PET layer, an aluminum foil layer and an LLDPE layer from the surface to the inside. Agent; In parts by weight, the water-based polyurethane adhesive consists of 115 parts of blocked alicyclic polyisocyanate, 48 parts of polyether glycol, 9 parts of dimethylol propionic acid, 35 parts of polypropylene glycol, 17 parts Parts of polytetramethylene glycol ether, 8 parts of ammonia water, 80 parts of deionized water, 17 parts of sodium ethylenediaminoethanesulfonate, 7 parts of modified epoxy resin, 4 parts of reactive group compounds, 2 parts of compound Additives, 15 parts of water-based polyacrylate, 7 parts of modified tackifier emulsion and 5 parts of modified reinforcing agent.

[0035] The modified epoxy resin is formed by mixing bisphenol A epoxy resin and aliphatic epoxy resin with a weight ratio of 3:1; the active group compound is polyetheramine with a molecular wei...

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Abstract

The invention belongs to the technical field of a soft package material, and particularly relates to a PET (polyethylene terephthalate) composite film for quick-frozen food soft package. The compositefilm sequentially comprises a PET layer, an aluminum foil layer and an LLDP (linear low density polyethylene) layer from the surface to the inside; dry type compounding is used between the layers; abonding agent used for dry type compounding is a waterborne polyurethane adhesive; the waterborne polyurethane adhesive is prepared from sealed cycloaliphatic polyisocyanates, polyether glycol, dimethylolpropionic acid, polypropylene glycol, polytetramethylene glycol ether, ammonium hydroxide, deionized water, aminoethyl sodium ethylenesulphonate, modified epoxy resin, active group compounds and composite auxiliary agents. The PET layer / aluminum foil layer / LLDPE three-layer composite film is used, and has the advantages that the high-blcoking performance, the anti-seepage effect, the delamination difficulty and the acid and alkali resistant performance are realized; the requirements on health, safety and environment in the modern society can be met; the process is simple.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a PET composite film for quick-frozen food flexible packaging and a preparation method thereof. Background technique [0002] Plastic flexible packaging has the functions of shielding, printing and heat sealing, and has been widely used in food, medicine, cosmetics and so on. Most of the flexible packaging is used for food packaging, especially instant or ready-to-eat food, and it can also be used for the packaging of chemical products such as pesticides, fertilizers, detergents, and health care products. Under the impact of the current wave of environmental protection, green packaging is the need for the development trend of international environmental protection, and it also represents the development trend of packaging in various countries. Corresponding to this, the green manufacturing of plastic flexible packaging has become an important development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/04C09J11/06C09J11/08C08G18/66C08G18/48C08G18/34B32B15/09B32B15/085B32B15/20B32B27/36B32B27/32B32B7/12
CPCB32B7/12B32B15/085B32B15/09B32B15/20B32B27/32B32B27/36B32B2307/54B32B2307/71B32B2307/714B32B2307/7244B32B2307/7246B32B2439/70C08G18/348C08G18/4808C08G18/6692C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J175/08C08L63/00C08L71/00C08L33/04C08L93/04C08K13/02C08K5/42C08K3/36C08K5/10
Inventor 李书堂魏风军张春健
Owner 河南大有塑业发展有限公司