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Manufacture technology of highly transparent film

A technology of transparent film and production process, applied in the field of plastic film, can solve the problems of low transparency, low transparency, low light transmittance, etc.

Inactive Publication Date: 2016-06-29
淄博龙沙高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the reduction of arable land, people pay more and more attention to the development of planting industry, so greenhouses are becoming more and more popular. Most of the vegetables we eat come from greenhouses. The large-scale development of greenhouses is inseparable from greenhouse films. The existing greenhouse films There are defects such as low transparency, low light transmittance, and short lifespan of sunlight exposure, which seriously affects the growth of greenhouse plants. The low light transmittance affects the photosynthesis of plants, thereby reducing the yield and short life. Replacement is a waste of farmers' money, and delays time and farm work
[0003] Industrial packaging films also have the above-mentioned problems. The transparency is low, and the packaged items look blurry inside, which is not beautiful, and the life of the film is not long due to sun exposure, which affects product packaging.

Method used

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  • Manufacture technology of highly transparent film
  • Manufacture technology of highly transparent film
  • Manufacture technology of highly transparent film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation process of a high-transparency film, the product is a double-layer structure, the outer layer is high-density polyethylene, the inner layer is low-density polyethylene and metallocene linear polyethylene; the outer layer resin accounts for 40% of the component mass, and the inner layer Layer resin accounts for 60% of the mass of the component;

[0018] Choose three different raw material resins, add nano-scale additives respectively, after heating and plasticizing, use double-layer co-extrusion equipment to extrude separately, two-layer composite co-extrusion molding, cooling and setting after molding

[0019] The mass ratio of the low-density polyethylene in the inner layer to the metallocene linear polyethylene is 1:2.

[0020] The nanoscale additive is mixed with nanoscale calcium carbonate and nanoscale hydrotalcite in a mass ratio of 1:2.

[0021] The added amount of the nano additive is 0.5 / 1000 of the material amount.

[0022] The temperature of...

Embodiment 2

[0030] The preparation process of a high-transparency film, the product is a double-layer structure, the outer layer is high-density polyethylene, the inner layer is low-density polyethylene and metallocene linear polyethylene; the outer layer resin accounts for 60% of the component mass, and the inner layer Layer resin accounts for 40% of the mass of the component;

[0031] Choose three different raw material resins, add nano-scale additives respectively, after heating and plasticizing, use double-layer co-extrusion equipment to extrude separately, two-layer composite co-extrusion molding, cooling and setting after molding

[0032] The mass ratio of the low-density polyethylene in the inner layer to the metallocene linear polyethylene is 3:2.

[0033] The nanoscale additive is mixed with nanoscale calcium carbonate and nanoscale hydrotalcite in a mass ratio of 1:2.

[0034] The added amount of the nano additive is 5.0 / 1000 of the material amount.

[0035] The temperature of...

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Abstract

The invention relates to a manufacture technology of a highly transparent film and belongs to the field of plastic films. The highly transparent film adopts a double-layer structure, the outer layer is made from high-density polyethylene, and the inner layer is made from low-density polyethylene and metallocene linear polyethylene. Outer layer resin accounts for 30-60% by mass of components, and inner layer resin accounts for 40-70% by mass of components. Three different resin raw materials are selected, and nanoscale auxiliaries are respectively added to the resin raw materials. After being heated and plasticized, mixtures are separately extruded by double-layer co-extrusion equipment, two layers are combined and jointly extruded and molded, and after molding, the shape is set through cooling. According to the technology, high-quality resin is used, the nanoscale auxiliaries are added, and the film is prepared through heating, plasticization, extrusion molding and forced-air cooling shaping. The manufacture technology has the advantages of being high in transparency, high in visual light transmittance, high in tensile strength, high in ultraviolet ray transmittance, long in solar exposure service life and the like.

Description

technical field [0001] The invention relates to a manufacturing process of a highly transparent film, which belongs to the field of plastic films. Background technique [0002] With the reduction of arable land, people pay more and more attention to the development of planting industry, so greenhouses are becoming more and more popular. Most of the vegetables we eat come from greenhouses. The large-scale development of greenhouses is inseparable from greenhouse films. The existing greenhouse films There are defects such as low transparency, low light transmittance, and short lifespan of sunlight exposure, which seriously affects the growth of greenhouse plants. The low light transmittance affects the photosynthesis of plants, thereby reducing the yield and short life. Replacement is a waste of farmers' money, and delays time and farm work. [0003] The above-mentioned problems also exist in industrial packaging films. The transparency is low, and the packaged items look blu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/06B29C47/92B32B27/08B29L7/00B29L9/00B29C48/92
Inventor 沙作宏
Owner 淄博龙沙高分子材料科技有限公司