Method of making a bonded nonwoven web

Details Method of making a bonded nonwoven web Method of making a bonded nonwoven web

1986-05-14

1988-06-07

Massie, Jerome

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156290, 1563096, 264120, 264126, 428198, 428296, D04H 314

Patent

active

047494239

ABSTRACT:
A method of making a nonwoven fibrous web. A web of primary fibers having uniformly distributed throughout secondary fibers containing 3 to 7 percent polyethylene by weight of the final web is formed on a conveying means. The polyethylene of the secondary fibers has a melting point that is lower than the melting point of the primary fibers. The web is then heated to a temperature below the melting point of the primary fibers but above the melting point of the polyethylene of the secondary fibers thereby causing some of the polyethylene fibers to bond to each other or to the primary fibers. The web is then heated to a temperature above the melting point of the primary fibers to form primary fiber-to-primary fiber thermal bonds which provide substantially all of the useful strength of the web.

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patent: 4576852 (1986-03-01), Burgess et al.
patent: 4632861 (1986-12-01), Vassilatos

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