Nonwoven continuously-bonded trilaminate

Details Nonwoven continuously-bonded trilaminate Nonwoven continuously-bonded trilaminate

1988-11-18

1989-09-05

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428212, 428213, 428284, 428287, 428296, 428297, 428298, 428903, B32B 702

Patent

active

048637858

ABSTRACT:
A nonwoven composite material comprising a meltblown fabric layer of a thermoplastic polymer sandwiched between two prebonded, spunbonded reinforcing fabric layers of a thermoplastic polymer, all continuously-bonded together to form a composite material. The preferred thermoplastic polymer for both the meltblown and spunbonded layers is polypropylene. The nonwoven composite material contains a minimal number of loose fibers, is highly resistant to the penetration of liquids and would also be expected to exhibit good abrasion resistance, while maintaining tear resistance and softness comparable to non-prebonded materials characterized by discrete bonding patterns. The nonwoven composite material is especially useful as a sterilization wrap for surgical and other health care items.

REFERENCES:
patent: 3542634 (1970-11-01), Such et al.
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patent: 4039711 (1977-08-01), Neuman
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patent: 4374888 (1983-02-01), Bornslaeger
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patent: 4493868 (1985-01-01), Meitner
patent: 4508113 (1985-04-01), Maloney
patent: 4555811 (1985-12-01), Shimalla
patent: 4766029 (1988-08-01), Brock et al.

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