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Polyester/low-density polyethylene composite film for packaging and preparation method of polyester/low-density polyethylene composite film

A technology for low-density polyethylene and packaging, applied in chemical instruments and methods, lamination devices, synthetic resin layered products, etc., can solve the problems of huge cost, environmental pollution, etc., and achieve environmental degradation, strong adhesion, The effect of scientific production technology

Inactive Publication Date: 2015-04-01
QIYANG WUZHOU PHARMA PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that in the long run, the pollution to our environment will be serious, and the cost of controlling these pollutions in the future will be huge.

Method used

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  • Polyester/low-density polyethylene composite film for packaging and preparation method of polyester/low-density polyethylene composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 18000kg of polyethylene terephthalate film with a thickness of 0.2mm, and keep the pressure at 0.3Mpa; first, apply 45kg of glue A, keep the temperature of the glue at 30°C, and the speed of the coating roller at 250 rpm. The temperature is 50°C, spread evenly; after the A glue is completely cured, start to coat 45kg of B glue, the temperature of B glue is kept at 40, the speed of the coating roller is 250 rpm, and the total coating amount of the mixed glue is 1.5g / m2. Then it is laminated with a low-density polyethylene film weighing 1910 kg and having a thickness of 0.05 mm, rolled up, cured at 40°C for 36 hours, cut, quality inspected, weighed at 19950 kg, and put into storage.

Embodiment 2

[0031] Take 18,000kg of polyethylene terephthalate film with a thickness of 0.25mm, and keep the pressure at 0.4 Mpa; first, coat 45kg of glue A, keep the temperature of the glue at 35°C, and the speed of the coating roller at 300 rpm. The temperature is 50°C, spread evenly; after the A glue is completely cured, start to coat 40kg of B glue, the temperature of B glue is kept at 45°C, the speed of the coating roller is 300 rpm, and the total coating amount of the mixed glue is 2g / m2. Then it is laminated with a low-density polyethylene film weighing 1900 kg and having a thickness of 0.05 mm, rolled, aged, aged at 50°C for 48 hours, cut, quality inspected, weighed 19980 kg, and put into storage.

Embodiment 3

[0033] Take 17,500kg of polyethylene terephthalate film with a thickness of 0.3mm, and keep the pressure at 0.5 Mpa; first, apply 45kg of glue A, keep the temperature of the glue at 40°C, and the speed of the coating roller at 350 rpm. The temperature is 50°C, spread evenly; after the A glue is completely cured, start to coat 36kg of B glue, the temperature of B glue is kept at 50°C, the speed of the coating roller is 350 rpm, and the total coating amount of the mixed glue is 2g / m2. Then it is laminated with a low-density polyethylene film weighing 2450kg and having a thickness of 0.05mm, rolled, aged, aged at 50°C for 48 hours, cut, quality inspected, weighed 20030kg, and put into storage.

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Abstract

The invention discloses a polyester / low-density polyethylene composite film for packaging and a preparation method of the polyester / low-density polyethylene composite film. The polyester / low-density polyethylene composite film is mainly characterized by comprising a polyethylene terephthalate film, a low-density polyethylene film and a composite adhesive. The preparation method comprises steps as follows: after a polyester film is coated with an adhesive, the polyester film and the low-density polyethylene film are laminated and composited to form the polyester / low-density polyethylene composite film for packaging, and the polyester / low-density polyethylene composite film for packaging is obtained through one-time laminating and composite forming. The used raw materials are easy to degrade, solvent-free composition is adopted, and the film doesn't contain benzene homologs and derivate and is environment-friendly and healthy.

Description

technical field [0001] The invention relates to a composite film for polyester / low-density polyethylene packaging and a preparation method thereof, belonging to the technical field of packaging material production. Background technique [0002] Packaging materials refer to the materials used to make packaging containers, packaging decoration, packaging printing, packaging and transportation to meet product packaging requirements, including metal, plastic, glass, ceramics, paper, bamboo, wild mushrooms, natural fibers, chemical fibers , composite materials and other main packaging materials, including coatings, adhesives, strapping, decoration, printing materials and other auxiliary materials. In our country, the packaging materials used for food and medicine are generally divided into two types. Those that directly contact the product itself are called inner packaging materials, and those that do not directly contact the product itself are called outer packaging materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/36B32B7/12B32B37/12
CPCB32B27/08B32B7/12B32B27/32B32B27/36B32B33/00B32B37/12B32B2037/1269B32B2307/716
Inventor 屈志文
Owner QIYANG WUZHOU PHARMA PACKAGING
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