Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2011-06-21
2011-06-21
Nutter, Nathan M (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S240000
Reexamination Certificate
active
07964670
ABSTRACT:
The present invention relates to a film comprising a composition of an ethylene/alpha-olefin copolymer and a thermoplastic elastomer. The thermoplastic elastomer is for example a styrene or a polyolefin based thermoplastic elastomer. Preferably the thermoplastic elastomer is a polyolefin based thermoplastic elastomer comprising a polyolefin and a rubber in which the rubber is dynamically vulcanized by the use of a curing agent. The ethylene/alpha-olefin copolymer has a density from about 0.88 to about 0.91 g/cm3 and comprises from 90-65 parts by weight ethylene and from 10-35 parts by weight of an alpha-olefin having from 3 to 8 carbon atoms. The film comprises a composition with from 35-80 parts by weight of the ethylene/alpha-olef in copolymer and 65-20 parts by weight of the dynamically vulcanized thermoplastic elastomer wherein said parts by weight are based upon 100 parts by weight of the ethylene/alpha-olefin copolymer and the thermoplastic elastomer. The invention further relates to the use of the film in diapers, bandages, gloves, surgical drapes, hospital linens, diaper waistbands, site panel composites and site tabs.
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Nixon & Vanderhye P.C.
Nutter Nathan M
Teknor Apex Company
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