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US 4,803,117 AGranted
Coformed ethylene-vinyl copolymer elastomeric fibrous webs
AssigneeKimberly-Clark Corporation
InventorDiego H. Daponte
Life of this patent
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Abstract
Elastomeric melt-blown fibers comprising a copolymer of ethylene and at least one vinyl monomer selected from the group including vinyl ester monomers, unsaturated aliphatic monocarboxylic acids and alkyl esters of these monocarboxylic acids disclosed. Elastomeric nonwoven webs formed from such fibers are also disclosed.
Claims22
A composite elastomeric web comprising:
- meltblown elastomeric fibers formed from a copolymer of ethylene and at least one vinyl monomer selected from the group including vinyl ester monomers wherein said vinyl monomer comprises from about 10% to about 50%, by weight, of said copolymer;
- and
- at least one type of secondary fiber uniformly distributed throughout said web.
A composite elastomeric web comprising:
- meltblown elastomeric fibers formed from a composition comprising a copolymer selected from the group consisting of ethylene vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-methylacrylate copolymer and ethylene-methylmethacrylate copolymer wherein said copolymer is comprised of from about 10% to about 50%, by weight, of nonethylene monomer;
- and
- at least one type of secondary fiber uniformly distributed throughout said web.
A composition fibrous nonwoven elastomeric web comprising:
- elastomeric meltblown fibers formed from an ethylene-vinyl acetate copolymer comprised of from about 10% to about 50%, by weight, of vinyl acetate monomer, said copolymer having a melt index in the range of from about 32 to about 500 grams per ten minutes;
- and
- from greater than 0% by weight to about 80% by weight of at least one type of secondary fiber.
A composite elastomeric web comprising:
- (a) meltblown elastomeric fibers formed from a blend of:
- (i) at least about 10% by weight of a copolymer of ethylene and at least one vinyl monomer selected from the group including vinyl ester monomers wherein said vinyl monomer comprises from about 10% to about 50%, by weight, of said copolymer;
- and
- (ii) from greater than 0% by weight to about 90% by weight of at least one compatible modifying polymer;
- and
- (b) at least one type of secondary fiber uniformly distributed throughout said web.
3 more elements
A composite elastomeric web comprising:
- (a) meltblown elastomeric fibers formed from a blend of:
- (i) at least about 10% by weight of a copolymer selected from the group consisting of ethylene vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-methylacrylate copolymer and ethylene-methylmethacrylate copolymer wherein said copolymer is comprised of from about 10% to about 50%, by weight, of nonethylene monomer;
- and
- (ii) from greater than 0% by weight to about 90% by weight of at least one compatible modifying polymer;
- and
- (b) at least one type of secondary fiber uniformly distributed throughout said web.
3 more elements
A composite elastomeric web comprising:
- (a) meltblown elastomeric fibers formed from a blend of:
- (i) at least about 10% by weight of an ethylene vinyl acetate copolymer comprised of from about 10% to about 50%, by weight, of vinyl acetate monomer, said copolymer having a melt index of from about 32 to about 500 grams per ten minutes;
- and
- (ii) from greater than 0% by weight to about 90% by weight of at least one compatible modifying polymer, and
- (b) at least one type of secondary fiber uniformly distributed throughout said web.
2 more elements
Dependencies are inferred from the claim text.