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US 6,352,948 B1Granted
Fine fiber composite web laminates
AssigneeKimberly-Clark Worldwide, Inc.
InventorsRichard Daniel Pike, Henry Louis Griesbach, III
Life of this patent
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Abstract
A multilayer laminate comprising a fine fiber nonwoven composite web which is a mixture of a first group of fibers and a second group of fibers such that the first and second fibers comprise polymers that are incompatible with each other. The fine fiber nonwoven composite web is bonded to a barrier layer such as a microporous film or a nonwoven web of meltblown fibers.
Claims32
A barrier laminate comprising:
- a fine fiber composite nonwoven web comprising a mixture of first and second continuous fibers disposed throughout said web, said first fibers having a fiber size less than 1.0 denier and wherein said first spunbond fibers comprise a first polymer and said second spunbond fibers comprise a second polymer immiscible with said first polymer;
- and
- a barrier layer having a hydrohead of at least 30 mbar, wherein said barrier layer and said fine fiber nonwoven web are bonded to form a multilayer laminate.
Dependencies are inferred from the claim text.