B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/08 (2006.01) A41D 31/00 (2006.01) B32B 27/12 (2006.01)
Patent
CA 2143543
The present invention relates to a laminate film having utility as a material from which to manufacture surgical and other protective garments. The laminate film comprises a first layer formed from a polyetherester copolymer material produced from the condensation reaction of dimethyl -1, 4- cyclo hexane dicarboxylate 1, 4-cyclo hexane dimethanol and poly(tetramethylene ether glycol) and a second layer comprising a first material selected from the group consisting of an ethylene-vinyl acetate copolymer material, a second polyetherester material, an ethylene methacrylate copolymer material, an anhydride modified polyolefin copolymer material, and a polyether block amide copolymer material. The polyetherester copolymer material produced from the condensation reaction of dimethyl -1, 4-cyclo hexane dicarboxylate 1, 4-cyclo hexane dimethanol and poly(tetramethylene ether glycol) is present in an amount greater than or equal to 35 wt. % of the total weight of the laminate film to provide strength to the laminate film. The laminate film may be formed using a coextrusion process. Alternatively, a laminate material may be formed by blending together the aforementioned materials in layers and extruding them through a single die. The laminate film of the present invention may be bonded to one or more layers of a non-woven material selected from the group consisting of polyester based materials, polyolefin based materials, and polyamide based materials. A corona treatment may be effected to increase the bond strength between the laminate film and the non-woven material layer(s).
Cryovac Inc.
Smart & Biggar
LandOfFree
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