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:
Nov. 16, 1982
Filed:
Jun. 01, 1981
John L Kane, Newark, OH (US);
Vikas M Nadkarni, Newark, OH (US);
Owens-Corning Fiberglas Corporation, Toledo, OH (US);
Abstract
A lofted mat of filaments is produced from process and apparatus including: supplying a plurality of streams of molten polymeric material; attenuating said streams of material into continous filaments through the action of a stream of fluid moving from an attenuation means; said filaments being entrained in said fluid moving from said attenuation means, said filaments having non-uniform residual stresses established therein; moving said stream of fluid and filaments along a first surface positioned intermediate said attenuation means and a foraminous surface; establishing a vacuum at said foraminous surface; directing said stream of fluid and filaments into said foraminous surface obliquely oriented with respect to said first surface such that a first portion of said fluid separates from the filaments and passes through said foraminous surface and a second portion of said fluid moves said filaments along the foraminous surface; collecting said filaments in a randomly dispersed, substantially uniform layer having a first thickness; passing said layer through crimp inducing means adapted to permit said unbalanced, residual stresses to randomly crimp said filaments to form said lofted mat having a second thickness greater than said first thickness.