Adhesive tape, base material for adhesive tape and their manufac

Details Adhesive tape, base material for adhesive tape and their manufac Adhesive tape, base material for adhesive tape and their manufac

1997-03-13

2000-10-31

Davis, Jenna

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428345, 428355RA, 4284231, 4284244, C09J 702

Patent

active

061399531

ABSTRACT:
A base material has a radiation-cured material prepared by curing a mixture of urethane acrylate oligomer and reactive dilute monomer, and also it shows a breaking elongation of more than 10%, preferably of more than 100%. The base material is used as a base sheet of an adhesive tape where an adhesive layer is formed on the base sheet. Accordingly, the novel base material and its manufacturing method in addition to an adhesive tape having such base material are provided. Furthermore, the adhesive tape has a flat surface without any fish-eye that causes the troubles of cracking, chip-scattering, and so on in the steps of back-grinding and dicing of the semiconductor wafer, and also the adhesive tape can be processed so as to have a predetermined thickness with high accuracy, compared with that of the conventional one.

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