Multilayer article of microporous and substantially nonporous ma

Details Multilayer article of microporous and substantially nonporous ma Multilayer article of microporous and substantially nonporous ma

1988-12-19

1990-01-09

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

4283155, 4283179, 4283184, 4283193, 4283199, 428402, 428461, 428515, 428200, 428206, 428331, B32B 326, B32B 522

Patent

active

048927791

ABSTRACT:
A multilayer article comprises at least one layer of substantially nonporous material fusion bonded in the absence of extrinsic intervening adhesive to at least one layer of microporous material comprising a matrix consisting essentially of linear ultrahigh molecular weight polyolefin, a large proportion of finely divided, water-insoluble filler at least about 50 percent of which is siliceous, and interconnecting pores.

REFERENCES:
patent: 2799828 (1974-03-01), Takashi et al.
patent: 2940830 (1960-06-01), Thornhill
patent: 3351495 (1967-11-01), Larsen et al.
patent: 3634184 (1972-01-01), Wang
patent: 4539256 (1985-09-01), Shipman
patent: 4582753 (1986-04-01), Duncan
patent: 4648417 (1987-03-01), Johnson et al.
patent: 4681750 (1987-07-01), Johnson et al.
patent: 4704323 (1987-11-01), Duncan et al.
patent: 4734229 (1988-03-01), Johnson et al.
patent: 4758462 (1988-07-01), Park et al.
patent: 4780364 (1988-10-01), Wade et al.

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