Wipers comprising point unbonded webs

Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond

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Details

428100, 428195, 428219, 428220, 428361, 442361, 442381, 442394, 604366, 604391, B32B 300, B32B 2714

Patent

active

059621125

ABSTRACT:
There is provided a wiper comprising a first web of fibers of at most 50 microns in diameter wherein said web has been bonded using a point unbonded pattern having a bond area between about 25 and 50 percent. The wiper can be made from thermoplastic polymer nonwoven fibers made by the meltblowing, spunbonding, carding and bonding, or airlaying processes. The wiper may be a laminate of various thermoplastic layers joined with the point unbonded pattern and may be a coform web of thermoplastic polymer and pulp or other material.

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patent: 4587154 (1986-05-01), Hotchkiss et al.
patent: 4906513 (1990-03-01), Kebbell et al.
patent: 5614281 (1997-03-01), Jackson et al.
patent: 5683971 (1997-11-01), Rose et al.
patent: 5763041 (1998-06-01), Leqak et al.
patent: 5766389 (1998-06-01), Brandon et al.

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