The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 1993
Filed:
Apr. 05, 1991
Gunther Vock, Bobingen, DE;
Michael Schops, Grossaitingen, DE;
Hoechst Aktiengesellschaft, , DE;
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.