Adhesive sheets

Details Adhesive sheets Adhesive sheets

1986-11-18

1988-07-12

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428345, 428901, 427 35, 427 541, C09J 702, C09U 702, B05D 306

Patent

active

047569689

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, said compound being 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 chip as picked up.

REFERENCES:
patent: 4311759 (1982-01-01), Glennon
patent: 4421822 (1983-12-01), Levens
patent: 4598036 (1986-07-01), Iwasaki et al.
patent: 4601973 (1986-07-01), Bauer

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