Patent ID: 7273654

Claim:
A roll of punched adhesive tape for semiconductor made from an adhesive tape containing at least one of contaminants and defects at at least one region of the adhesive tape, consisting essentially of said adhesive tape containing at least one of contaminants and defects and which consists essentially of a base film and an adhesive layer provided on both sides of the base film, wherein the thickness of the base film is 5 to 200 μm and the thickness of each adhesive layer is 5 to 50 μm and wherein said adhesive tape is pierced with at least one punched hole, which is made by punching the adhesive tape completely through the base film and the adhesive layers, at or in the vicinity of said at least one region where the adhesive tape contains said at least one of the contaminants and defects, wherein the punched hole is a circular punched hole of 0.5 to 10 mm in diameter.