Surface protective film and process for producing the same

Details Surface protective film and process for producing the same Surface protective film and process for producing the same

2005-02-22

2005-02-22

Chen, Vivian (Department: 1773)

Stock material or miscellaneous articles

Composite

Of silicon containing

C428S452000, C428S480000, C428S481000, C428S041800, C428S532000, C428S213000, C428S215000, C428S336000, C428S337000, C427S384000, C427S339000

Reexamination Certificate

active

06858311

ABSTRACT:
A surface protective film which can be easily peeled off from an adhesive silicone rubber composition layer, is free of a plasticizer or the like which may have an adverse effect on adhesion of the adhesive silicone rubber composition layer to a semiconductor chip or semiconductor chip attaching portion, and has no adverse effect on thickness uniformity or surface flatness of the adhesive silicone rubber composition layer, and a process for producing the same. More specifically, a surface protective film for protecting an adhesive silicone rubber composition layer (C), comprising a base film (A) coated, at least on one side, with a cellulose-based resin layer (B) having an SP value of 21.0 to 29.0 (MPa)1/2, determined by the Fedors method, and process for producing the same.

REFERENCES:
patent: 4889576 (1989-12-01), Suganuma et al.
patent: 5023288 (1991-06-01), Hirai et al.
patent: 20030232165 (2003-12-01), Sumita et al.

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