CPE pattern isolating membrane of glass interlayer PVB membrane and production method thereof

Abstract

The invention relates to a CPE pattern isolating membrane of a glass interlayer PVB membrane. The CPE pattern isolating membrane is prepared from the following components in parts by weight: 12.5 or 25 parts of calcium carbonate mixed material, 50 parts of high pressure low density polyethylene, 50 parts of low pressure high density polyethylene, 100 parts of linear high pressure low density polyethylene, 2.13-6.38 or 2.3-6.8 parts of PE antistatic agent, 2.13-10.62 or 2.3-11.3 parts of PE-A crystal point removing agent and 2.1-21.3 or 2.3-22.5 parts of metallocene. The rolled isolating membrane product is colorless and semitransparent, the thickness is 20+ / -2 mu m, the gram per square meter is less than or equal to 20+ / -2, the surface detail height is less than 100 mu m, the vertical strength is greater than 10MPa, the vertical or lateral elongation is greater than 150%, and the lateral strength is greater than 8MPa. The product is prepared by the following six steps: preparation of the calcium carbonate mixed material; stocking; mixing; casual inspection; drying; feeding. The isolating membrane prepared is weak in static electricity, unremarkable in hitting people, difficult in dust collection and impurity absorption, high in rate of graded product, few in crystal point, flat and smooth in surface, high in membrane strength and good in malleability.

Description

technical field [0001] The invention relates to a production method of a plastic film, in particular to a production method of a CPE isolation film with concavo-convex patterns on the surface of a PVB film (polyvinyl butyral intermediate film) used in laminated glass for automobiles or building doors and windows. Background technique [0002] There are many types of interlayer films in laminated glass, which can prevent the fragments from splashing and hurting people when they are hit or broken by falling. Such as CN201110291114.2 Zhejiang Agriculture and Forestry University has authorized the patent right of "high tensile strength multi-mixed PVB membrane and its production method", due to the different components, content and process, the membrane is different from the two layers The glass is pasted into one body, flat and transparent, and there is no need to use an isolation film. If the PVB interlayer film is pasted between the two layers of glass, it is difficult to ach...

AI Technical Summary

Problems solved by technology

After retrieval and market research, no CPE isolation film and its production method were found to be isolated by the PVB interlayer film between double-layer glass plates.

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