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US 5,851,935 AGranted
Cross-directionally stretchable elastomeric fabric laminated by thermal spot bonding
AssigneeBBA Nonwovens Simpsonville, Inc.
InventorsRamesh Srinivasan, W. Andrew Coslett, Angelo Colace
Life of this patent
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Abstract
An elastomeric laminated fabric which is elastic in the cross direction. The laminate includes an elastomeric film having one or two nonwoven webs of carded thermoplastic staple fibers thermally point bonded thereto using heated calendar rolls. The resulting laminated fabric is stretchable by at least 100% in the cross direction without breaking for at least two cycles and recovers elastically. The fiber content of the nonwoven webs is at least 50% high-elongation polyolefin staple fibers having a breaking strain of at least 400%.
Claims5
A laminated fabric comprising:
- a film of elastomeric material having a first melting temperature, said film having a multiplicity of spaced apertures;
- and
- first and second carded nonwoven webs sandwiching said film, each of said first and second carded nonwoven webs comprising substantially 100% of staple fibers made of a particular thermoplastic material having a second melting temperature higher than said first melting temperature,
- wherein thermoplastic fibers which overlap said apertures in said film are fused to each other across said apertures to form densified web portions, leaving undensified web portions consisting of unfused fibers in regions not overlapping said film apertures.
1 more element
Dependencies are inferred from the claim text.