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Extra blocking efficiency.

A multifunctional antiblock additive, Ampacet 102765, is said to increase blocking efficiency by 47% in thin-gauge olefin films compared with a standard antiblock, while reducing haze and coefficient of friction by about 40%. It thus reduces the need for antiblock and slip addition even as it increases film clarity, says Ampacet Corp. Ampacet 102765 is targeted at high-clarity, flexible packaging made from such polymers as linear low-density polyethylene (LLDPE), metallocene LLDPE, and ethylenevinyl acetate copolymer used in food-bag sealant layers, drycleaner garment bags, shrink film, and other applications.

Its combination of mineral and organic antiblocking agents is reportedly more effective at lowering blocking force than either would be if used alone. According to the company, the additive has a dual action: its mineral particles create a physical gap between films that lowers blocking, while the chemical migrates to the surface between particles to further limit interfilm adhesion. Tests conducted by the company reveal that 102765 does not affect sealability and can act as a release agent in packaging for cheese, candy, and other products in which a film must separate from the contents.

Ampacet Corp., 660 White Plains Road, Tarrytown, NY 10591; (914) 631-6600;; email: bmckinley@
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Title Annotation:MATERIALS; multifunctional antiblock additive Ampacet 102765
Author:Blanco, Alice
Publication:Plastics Engineering
Article Type:Brief Article
Geographic Code:1USA
Date:Jun 1, 2005
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