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:
Jan. 10, 1984
Filed:
Mar. 25, 1982
Ichikawa Woolen Textile Co., Ltd., Tokyo, JP;
Abstract
A needle punched papermaking felt is described which comprises a plurality of layers of foundation fabrics formed in an endless form by joining the opposite edges of long woven form foundation fabrics or foundation fabrics woven in an endless form, laying over one or both sides of said foundation fabrics batts consisting of synthetic fibers or natural fibers or mixtures thereof, and by felting by a needle punching process to cause the component fibers to be entangled with each other. A thin layer of batts consisting of synthetic fibers, natural fibers or their mixtures, may be interposed between the adjacent layers of the foundation fabrics. The method of manufacture comprises the steps of placing in a needle punching machine under tension, a plurality of endless foundation fabrics in a long woven form, or a plurality of relatively easily woven foundation fabrics in an endless form, or both, applying and laying batts consisting of synthetic fibers or natural fibers or their mixtures over the foundation fabrics while the foundation fabrics are being advanced in the needle punching machine, and needle punching the combination of the superimposed foundation fabrics and batts so that the component fibers are caused to be entangled with each other.