High release force type release film with smooth silicone oil surface and production process of high release force type release film

Abstract

The invention discloses a high release force type release film with a smooth silicone oil surface and a production process of the high release force type release film. The high release force type release film comprises a base material and the silicone oil surface attached to the base material, wherein the silicone oil surface comprises the following components in parts by weight: 45-60 parts of a solvent, 18-22 parts of a release agent, 0.5-1 part of a curing agent, 0.1-0.5 part of a release force regulator and 1-3 parts of a cross-linking agent; the solvent is obtained by mixing a solvent D-30 and a solvent IPA according to the ratio of 3:2, the release agent is obtained by mixing lubricating silicon grease, fluororesin and microcrystalline wax according to the ratio of 2:1:0.1, and the cross-linking agent is obtained by mixing diisocyanate and gleditsia sinensis extract according to the ratio of 20:1. The release film is high in release force, and good in uniformity, further has the smooth and stable silicone oil surface, is weak in viscosity, and can be applied to molten solid hot melt glue surfaces, thermosetting adhesive and the like.

Description

technical field [0001] The invention relates to the field of release films, in particular to a heavy-release release film with a smooth silicone oil surface and a production process thereof. Background technique [0002] The release film refers to a film with the ability to separate on the surface. The release film is not sticky or slightly sticky after contacting with specific materials under limited conditions. For example, a silicone oil-type PET release film can be obtained by coating a layer of silicone oil on the substrate PET film. The function of the silicone oil is to reduce the surface adhesion of the PET film and achieve the release effect. [0003] According to the size of the release force, the release film is divided into light release release film, medium release release film and heavy release release film. Heavy-release release film is generally used to transfer adhesive products, especially for the composite use of molten solid hot-melt adhesive surface, th...

AI Technical Summary

Problems solved by technology

[0004] In order to improve the release force of the release film, the traditional method is to increase the amount of release agent and release force regulator. If the amount of single release agent is too much, it will affect the molecular structure of the silicone oil surface of the release film, making the entire The stability of the silicone oil surface is reduced, and the silicone oil surface is rough and uneven. At the same time, the release force of the silicone oil surface varies greatly, and the uniformity of the release force is poor.