Patent ID: 9324593
Filing Date: 2016-04-26
CPC Classification: C09J,H01L,Y10T

Claim Text:
1. A wafer processing tape comprising: a release film; an adhesive layer formed on a first surface of the release film and having a predetermined planar shape; a pressure-sensitive adhesive film having a label portion and a surrounding portion surrounding outside the label portion, said label portion having a predetermined planar shape and covering the adhesive layer so that the label portion contacts with the release film around the adhesive layer; and a colored support member formed at both end portions of the release film in a short side direction of the release film, wherein said colored support member is formed on an area on the second surface of the release film corresponding to an area on the first surface of the release film between an end portion of the release film and an outside of the adhesive layer, and an outer edge of said colored support member is offset from the end portion of the release film, wherein said colored support member has a coefficient of linear expansion different from that of the release film by a difference of 250 ppm/° C. or less, said colored support member has a thickness larger than that of the adhesive layer, said pressure-sensitive adhesive film includes a pressure-sensitive adhesive layer and a base film, said base film has a coefficient of static friction different from that of said colored support member by a difference of 0.2 to 2.0, and said base film is formed of at least one of an α-olefin homopolymer or copolymer or a mixture thereof, polyurethane, a styrene-ethylene-butene and pentane-based copolymer, and a thermoplastic elastomer.