Patent ID: 9644078
Date: 2017-05-09
CPC Classifications: B32B,C08J,C09J,Y10T

Claim:
1. A release film, comprising: a base film containing a synthetic resin including more than one selected from the group consisting of polyethyleneterephthalate, polyethylene, polypropylene, polyacrylate, polyurethane and polyester-based resin; an embossing patterns layer that is formed on the base film and has more than one protrusion containing a curing material of a photo curable resin composition including a photo curable oligomer, a thinner and a photopolymerization initiator; a silicon release-treating layer that is formed on the embossing patterns layer; a first primer layer that is formed between the base film and the embossing patterns layer; and a second primer layer that is formed on the base film opposite to the embossing patterns layer, wherein a surface roughness (Rt) of the base film is less than 3 μm, wherein the maximum height of the protrusion is 1 to 20 μm and the width of the base side is 100 to 500 μm, wherein the first primer layer includes more than one selected from the group consisting of polyacrylate resin, polyester resin, polyolefin resin and polyurethane resin and the second primer layer includes more than one selected from the group consisting of polyethylene resin, polypropylene resin, acrylate resin, polyurethane resin, silicon resin and polyester resin, and wherein the photo curable oligomer includes more than one selected from the group consisting of polyester acrylate, epoxy acrylate, urethane acrylate and silicon acrylate.