Release carrier with spherulite formations

Details Release carrier with spherulite formations Release carrier with spherulite formations

1991-09-25

1992-10-06

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428156, 428172, 428195, 428500, 428516, 428910, 428511, 428409, 264284, 427264, 427361, 427362, 156209, B32B 330, B06N 704, B29C 5902

Patent

active

051530473

ABSTRACT:
A release carrier includes a dimensionally stable release paper of the prior art, but also includes a crystallizable polymer which has spherulite formations on its exposed surface. The preferred crystallizable polymer is polypropylene. The release carriers can be reconditioned to remove surface defects, change the level of gloss and form patterned areas of differential gloss by heating the polyolefin layer above its melting point and quenching the layer under controlled conditions. By quenching the crystallizable polymer by contacting the surface of the release carrier opposite the crystallizable polymer with a chill roll, the transfer of defects in the chill roll or planishing roll to the release carrier surface is avoided.

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