Preparing method of high-temperature-resistance Mylar sheet

Abstract

The invention relates to the technical field of preparing technologies of Mylar sheets, in particular to a preparing method of a high-temperature-resistance Mylar sheet. The preparing method comprisesthe following steps of 1, preparing dimethyl terephthalate, ethylene glycol, a biaxial drawing film forming machine, a gumming machine, a high-temperature-resistance adhesive and a PET transparent release film required for preparing the high-temperature-resistance Mylar sheet; 2, conducting interesterification and vacuum polycondensation reactions on the dimethyl terephthalate and ethylene glycolto obtain polyethylene glycol terephthalate, and utilizing the film forming machine for conducting biaxial drawing to form a PET transparent film; 3, utilizing the gumming machine for uniformly smearing a layer of the high-temperature-resistance adhesive on the PET transparent film obtained in step 2; 4, attaching the PET transparent release film to the high-temperature-resistance adhesive to obtain the high-temperature-resistance Mylar sheet; 5, compounding and punching the high-temperature-resistance Mylar sheet. The production technology is suitable for automatic production of the high-temperature-resistance Mylar sheet, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of Mylar sheet preparation technology, in particular to a preparation method of high-temperature-resistant Mylar sheet. Background technique [0002] The preparation process of high temperature resistant Mylar sheet is as follows: cutting adhesive → cutting MYLAR release film → laminating release paper and adhesive → stamping adhesive → laminating MYLAR release film and adhesive → stamping MYLAR release film and Adhesive → tearing edge material (waste discharge) → pasting release paper. In the above process, the back glue is stamped first, then the formed back glue is pasted on the MYLAR release film, and finally the shape is punched. According to the above process, the adhesive can only be pasted on the MYLAR release film manually, which is time-consuming and laborious, resulting in low processing efficiency. Contents of the invention [0003] The object of the present invention is to provide a kind of ...

AI Technical Summary

Problems solved by technology

According to the above process, the adhesive can only be pasted on the MYLAR release film manually, which is time-consuming and laborious, resulting in low processing efficiency