US 5,945,174 A · Acrylate polymer release coated sheet materials and method of production thereof

Abstract

Sheet materials according to the present invention comprise a sheet material substrate, such as for example a film or paper sheet, with a polymer release coating overlying and adhered to a surface of the sheet material substrate. Single and multilayer release coatings can be formed on the substrate by vapor deposition of silicone acrylates and/or fluorinated acrylates. These coatings can be applied in thickness of 0.05 micron to 1.0 micron to achieve a range of release properties. These coatings can be applied in a very thin single layer on relatively smooth substrates or in a multilayer form on rough substrates such as paper. The new coating process described here has lower process and materials costs, improved adhesion, low slip, and excellent release characteristics.

Claims8

Dependent claims

A method for forming a coated sheet material comprising:

providing a first radiation curable composition comprising at least one acrylate monomer having a molecular weight in the range of about 150 to 600 and a viscosity of no more than 200 centistokes at 25.degree. C.,
providing a second composition which is incompatible with said first composition and comprises at least one acrylate monomer having a molecular weight in the range of about 200 to 3000,
vaporizing said first and second compositions,
mixing the vapors of said first and second compositions,
condensing the mixed vapors of said first and second compositions on a substrate to form a coating, and
exposing the coating to radiation to cure and crosslink the compositions and form a compatible polymer comprised of the normally incompatible compositions.

3 more elements

Dependencies are inferred from the claim text.

Acrylate polymer release coated sheet materials and method of production thereof

Life of this patent

Acrylate polymer release coated sheet materials and method of production thereof

Life of this patent

Abstract

Claims8