Manufacturing method of release paper

Details Manufacturing method of release paper Manufacturing method of release paper

B - Operations, Transporting

29

C

18/783

B29C 47/06 (2006.01)

Patent

CA 1263905

ABSTRACT The present invention relates to a method of manufacturing a release paper characterized in that a mixture of polyolefin and a silicone release agent compatible therewith comprising a reaction product of polymethyl hydrogen siloxane, vinyl group-containing poly-dimethyl siloxane and at least one olefin or polyolefin having one or more double-bonds is extruded onto a substrate of paper, fabric, film etc; the laminate is heat treated to cause the release agent contained in the mixed layer of the laminate to bleed onto the surface of the mixed layer to be thus localized and the localized release agent is fixed by curing. The resultant release agent's compatibility with polyolefin, film forming and stretching properties are improved surprisingly, and since a high concentration of release agent is localized and fixed by curing on the surface of the release agent layer, a small amount of tha release agent sufficies to exhibit a remarkable release effect.

500749

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