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Single and double-sided release paper

Definition of release paper

Release paper is also called isolation paper, anti-stick paper, silicon oil paper.

Release paper is a high-grade paper coated on one or both sides with a non-stick material. The manufacture of release paper involves two main stages, namely the lamination process and the coating process. Release paper is made from wood fibre paper and is first laminated with a polyethylene film (PE) and then coated with a thin layer of non-stick silicone. It is divided into various categories, including single-sided silicone-coated release paper and double-sided silicone-coated release paper. Due to its high resistance to adhesive materials, it provides excellent release of sticky materials such as adhesives.

Paper Release is made of paper coated with anti-adhesive substance, and its type is distinguished according to the difference of material, thickness, elongation, and single and double sides. Double-sided Paper Release; both sides are coated with silicone oil, so it is a two-sided anti-oil, moisture-proof, anti-adhesive paper products, generally used to review double-sided adhesive. Ordinary Paper Release is a three-layer structure, divided into the original paper, lamination, and release agent. The double-sided Paper Release has a five-layer structure of the original paper, two lamination, two sides coated with silicone oil, called double-sided Paper Release; there are also manufacturers require printing, production process in the original paper first printed in the lamination coated with silicone.

release paper

Characteristics of release paper

  1. As a backing film for label stickers, specifically for die-cutting or labelling processes
  2. Cleanly used as food steaming mats, bread baking mats and food wrappers
  3. As a liner for excellent handling and protection of double-sided adhesive tapes
  4. Ideal for making surgical gowns, shoes and paper lanterns

Anti-stick paper

Anti-stick paper, also known as silicone oil paper. It consists of a three-layer structure, the first layer: base paper; the second layer: lamination: the third layer: silicone oil. It can be used in electronics, automotive foam, printing, food, medical, etc. In most cases, it is used with sticky materials, especially adhesive tapes.

The commonly used Paper Release are:

  1. Laminated Paper Release: After the original paper is laminated, the release agent is coated on the laminated surface and the Paper Release is produced.
  2. Grassian Paper Release: Grassian paper is produced by overpressing the original paper and then coating it with release agent.
  3. CCK Paper Release: CCK paper is produced by coating a special clay on the surface and then coating with release agent.
  4. Other release papers: There are other release papers that are widely used by many industries, and there are also those that do not use a release agent. For example, label printers tend to have a layer of varnish where there is a need for release, which will also have some release ability.
Single and double-sided release paper

The role of Paper Release

In the wet production of prepreg with single-sided Paper Release, Paper Release is placed on the top and bottom of the prepreg. The lower Paper Release is attached to the prepreg as it is wound up, so the surface of the prepreg is usually protected by a layer of Paper Release. The purpose of the Paper Release is to prevent the prepreg from being contaminated and to facilitate the scribing on its surface. Another role of the single-sided Paper Release is to prevent lateral cracking of the one-way prepreg. Paper Release should meet: can stick to the prepreg, but also easy to make the two separate; does not have a chemical reaction with the resin system or contamination of the resin system; in the ambient temperature and humidity changes, the length and width of the Paper Release should remain unchanged, so as not to cause wrinkling of the Paper Release and the prepreg wrinkled; should have sufficient denseness to prevent moisture from entering the prepreg through it; the elongation of the Paper Release after being traction should be consistent with the fiber The elongation of the Paper Release should be consistent with the fiber after being traction to prevent the prepreg from being deformed or twisted due to unsynchronized drafting in the preparation process; its thickness and quality per unit area are not easy to control precisely.