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:
Oct. 01, 2002
Filed:
Apr. 17, 2000
Applicant:
Inventors:
Assignee:
Wacker Chemie GmbH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27N 3/04 ; B29C 4/330 ;
U.S. Cl.
CPC ...
B27N 3/04 ; B29C 4/330 ;
Abstract
Disclosed is a process for producing fiber webs by the airlaid process of laying down the fibers and the pulverulent binder in an air stream, which includes a first step of laying a fiber web or fibers up to a basis weight of 10 to 50 g/m , a subsequent step of laying down fibers and a thermoplastic polymer powder based on polymers of one or more monomers such as a vinyl ester or a (meth)acrylic ester separately or as a mixture in the air stream in an amount of 10 to 300 g/m and, if appropriate, repeating this step until the desired basis weight is obtained, and consolidating the fiber material at temperatures of 80° C. to 260° C. and, if appropriate, at a pressure of up to 100 bar.