Adhesive sheets

Details Adhesive sheets Adhesive sheets

1987-10-22

1990-10-23

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428345, 430338, C09J 702, C09J13308, C09J13310

Patent

active

049651277

ABSTRACT:
An adhesive sheet according to the present invention comprises a substrate having coated on the surface thereof an adhesive layer consisting of an adhesive and a radiation polymerizable compound, which compound is a urethane acrylate oligomer having a molecular weight of 3,000-10,000, preferably 4,000-8,000. The adhesive sheet is preferably used in subjecting semiconductor wafers to dicing operation and no adhesive sticks to and remains on the back side surface of the wafer chips as picked up.

REFERENCES:
patent: 4311759 (1982-11-01), Glennon
patent: 4598036 (1986-07-01), Iwasaki et al.
patent: 4756968 (1988-07-01), Ebe et al.

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