Dow Global Technolgoies LLC

Francois J F Regnier

Jeffrey E Bonekamp

Harvey C Tung

Rochelle A Woods

Multilayer films comprising a quiet film layer having noise dampening properties and at least one second layer which are particularly useful for, ostomy bags (colostomy, ileostomy), trans-dermal delivery systems (TDDS), cosmetic patches, incontinence bags, medical collection bags, parenteral solution bags, and food packaging, as well as for protective clothing and soil fumigation applications. The quiet layer comprises a polymer resin or polymer resin composition having a Tangent Delta value of at least 0.25 at a temperature within the range of &minus;5&deg; C. and 15&deg; C. or at least 0.32 at a temperature within the range of &minus;12&deg; C. to &minus;5&deg; C., and the at least one second layer has a storage modulus G&prime; equal to or greater than 2&times;10 N/cm .

Multilayer films with quiet film layer having noise dampening properties

Essentially amorphous non-chlorinated polymeric films are provided which are effective barriers to odors and organic molecules, making them particularly useful for ostomy bags (colostomy, ileostomy), trans-dermal delivery systems (TDDS), cosmetic patches, incontinence bags, medical collection bags, parenteral solution bags, and food packaging, as well as for protective clothing and soil fumigation applications. The barrier layers of the present invention can be used as monolayers or can be a component film of a multilayer structure. The barrier films may be used with or without other film layers that promote reduced noise emission. Alternately, single and multi-layer films may omit the barrier layer in favor of the reduced noise emission layers.

Essentially amorphous, non-chlorinated polymeric barrier films and method of using such films

An oriented co-extruded film suitable for use as a window film for mailing envelopes, having a polyolefin layer and a non-glossy surface layer of polystyrene.

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Weyersheim, France

Francois J F Regnier