Thermally stable, binder-consolidated spunbonded web

Details Thermally stable, binder-consolidated spunbonded web Thermally stable, binder-consolidated spunbonded web

1991-04-05

1993-06-15

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156180, 156181, 1563082, 428224, 428244, 428283, 428284, 428287, 428296, 428297, 428373, 428920, D04H 158

Patent

active

052196470

ABSTRACT:
There is described a thermally stable, binder-consolidated spunbonded web formed from load-carrying filaments and binder filaments where the melting point of the binder filaments is less than 30.degree. C below that of the load-carrying filaments.
The binder and the load-carrying filaments are preferably made of polyesters. The basis weight of the spunbonded web is within the range between 50 and 500 g/m.sup.2, the denier of the load-carrying and the binder filaments is within the range between 1 and 20 dtex, and the proportion of binder filament is between 5 and 25 percent by weight. The web has a particularly high thermal resistance, i.e. a particularly high resistance to high downstream processing temperatures. It is usable for example as a support material for roofing membranes and as a tufting support and so on.

REFERENCES:
patent: 3117056 (1964-01-01), Katz et al.
patent: 3975224 (1976-08-01), Ruzek et al.
patent: 4129675 (1978-12-01), Scott
patent: 4210690 (1980-07-01), Hartmann et al.
patent: 4310594 (1982-01-01), Yamazaki et al.
patent: 4722857 (1988-02-01), Tomioka et al.
patent: 4842915 (1989-06-01), Hartmann et al.
patent: 4861633 (1989-08-01), Abe

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