Production method and production device for vinyl acetate resin copolymer packaging film

A production method and vinyl resin technology are applied in the field of production equipment for acetic acid-vinyl resin copolymer packaging films, which can solve the problems of difficulty in controlling the flatness of the film after tempering, increase in equipment costs, doubts about feasibility, and the like, and achieve shrinkage. rate reduction, lower equipment cost, and eliminate the effect of stretch memory

Inactive Publication Date: 2010-12-08
徐维军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method greatly lengthens the production line and greatly increases the equipment cost; and it is diff

Method used

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  • Production method and production device for vinyl acetate resin copolymer packaging film
  • Production method and production device for vinyl acetate resin copolymer packaging film
  • Production method and production device for vinyl acetate resin copolymer packaging film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] as attached figure 2 As shown, the production equipment of the acetic acid-vinyl ester copolymer packaging film of the present invention comprises a flat mold 1, a silica gel pressure roll 3, an embossed cold roll 4, the silica gel pressure roll 3 and the embossed cold roll 4 are circumscribed, and the silica gel The connecting line between the center of the pressure roller 3 and the embossing cold roller 4 is horizontal, the flat mold 1 is located directly above the tangent point between the silicone pressure roller 3 and the embossing cold roller 4, and the embossing cold roller 4 and the silicone pressure roller 3 are at the same point of tangency The tangent line of the flat mold 1 is on the diaphragm 2, and the distance from the tangent line from the die lip of the flat mold 1 to the silicone pressure roller 3 and the embossing cold roller 4 is about 350mm. Infrared heating devices 5 are installed on both sides of the diaphragm between the tangent lines of 4; the ...

Embodiment 2

[0033] as attached image 3 As shown, the production equipment of the acetic acid-vinyl ester copolymer packaging film of the present invention comprises a flat mold 1, a silica gel pressure roll 3, an embossed cold roll 4, the silica gel pressure roll 3 and the embossed cold roll 4 are circumscribed, and the silica gel The connecting line between the center of the embossing cold roll 3 and the embossing cold roll 4 is horizontal, and the flat mold 1 is located above the embossing cold roll 4, from the contact point between the diaphragm 2 and the embossing cold roll 4 until the embossing cold roll 4 is in contact with the silicone pressure roll 3 An infrared heating device 5 is installed on the outside of the embossing cold roll 4 between the cuts; the diaphragm 2 is heated by the heating device 5 to keep the fluidity of the diaphragm 2 good, which effectively improves the production efficiency. The opening of the die opening of the mold 1 is increased correspondingly at the ...

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PUM

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Abstract

The invention discloses a production method and a production device for an EVA diaphragm of a photovoltaic cell packaging film, wherein a heating radiator is additionally arranged between a flat die orifice and a cooling and forming roller to heat the diaphragm from the flat die first and then processes such as subsequent forming, drawing, rolling and the like are carried out so that unilateral stretching occurs in a special temperature range to enlarge the openness of the flat die. Thickness of the diaphragm is determined by a certain extension ratio and stress memory is eliminated by temperature in the stretching process so that the diaphragm is crosslinked appropriately to achieve high-speed production of a low shrink hot-melt film. The invention has the advantages of low cost of device, simple production process and capability of improving the capacity to a great extent and the like.

Description

technical field [0001] The invention relates to a production method of an acetate-vinyl ester copolymer packaging film, and also relates to a production equipment for the acetate-vinyl ester copolymer packaging film. Background technique [0002] At present, the production of EVA (acetic acid-vinyl ester copolymer) diaphragm is mainly produced by extrusion casting or extrusion calendering, see attached figure 1 . The raw material whose main component is EVA is plasticized into a melt state through an extruder, and then the melt is formed into a sheet 2 through a flat mold 1, and then completed through subsequent processes such as silicone pressure roller 3 embossing cold roller 4 shaping traction and winding Production of diaphragms. [0003] The general extrusion casting or extrusion calendering method to produce plastic film is actually a unidirectional stretching method, that is, there is stretching between the melt outlet and the cold roll, and the thinner the film is ...

Claims

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Application Information

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IPC IPC(8): B29C47/00B29C59/04B29L7/00B29K31/00
Inventor 徐维军
Owner 徐维军
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