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BOPP scratch-resistant flowers specular membrane touch membrane preparation process can have three ways:

by:Taian Lamination Film     2021-02-04

      The preparation methods of BOPP film optical film tactility can have three kinds

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& have spent     BOPP scratch-resistant flowers specular membrane touch membrane preparation process can have three kinds: coating, laminating process, co - process Extrusion process. Most of the product are the co - abroad The extrusion process. The coating resin and polypropylene resin multi-layer co-extrusion, then two-way stretch preparation into different types of BOPP pre-coating film.

in the preparation of composite flexible packaging film, with precoating BOPP film as raw material of hot melt adhesive, can simplify the production process ( No JiaoGong period) , need to use heating stick to BOPP pre-coating film heated to proper temperature can directly with the rest of the base material compound, eliminated the pollution caused by JiaoGong section.

it's also worth pointing out is that the coating technology on preparation of BOPP pre-coating film, before coating coating material, the first thing to corona treatment was carried out on the base material. Because unprocessed substrate surface activity is low, and the coating resin bond is small, the late formation of the composite film peel strength will be low. BOPP corona processing can form a certain depression, increase the surface roughness, oxidation at the same time a certain amount of hydroxyl, carboxyl and carbonyl polar groups, to improve the peel strength of composite membranes. Moreover after corona treatment will greatly improve the gas barrier property of composite membrane. Because after corona treatment surface can form many active point, the combination of these active points and coating layer closely, almost no gap between the precoat and BOPP.

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