Release liner

Details Release liner Release liner

2011-03-01

2011-03-01

Zimmer, Marc S (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C528S025000, C528S030000, C525S474000

Reexamination Certificate

active

07897666

ABSTRACT:
The present invention is a release liner including a film formed of a thermoplastic polymer and a non-migratory silicone additive. The additive is formed with a siloxane polymer that can be added directly to the thermoplastic polymer prior to compounding the thermoplastic polymer into an extrudable release liner film. The additive provides the desired release properties to the film, and due to bonds formed between the siloxane polymer and a binding component added to the siloxane polymer during formation of the additive, as well as the high molecular weight of the siloxane polymer, is non-migratory.

REFERENCES:
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patent: 4308063 (1981-12-01), Horiuchi et al.
patent: 5403891 (1995-04-01), Romenesko
patent: 5708084 (1998-01-01), Hauenstein et al.
patent: 5708085 (1998-01-01), Hauenstein et al.
patent: 5844031 (1998-12-01), Chen et al.
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patent: 6441086 (2002-08-01), Wolfer et al.
patent: 7105233 (2006-09-01), Bechthold et al.
patent: 7250127 (2007-07-01), Geck et al.
patent: 2007/0276078 (2007-11-01), Pottier et al.
patent: 0 254 050 (1995-01-01), None
patent: 0 522 024 (1995-06-01), None
Derwent abstract of KR 2003/031363.

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