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, 1999
Filed:
Jun. 06, 1997
Applicant:
Inventor:
William F Scholz, Altadena, CA (US);
Assignee:
Avery Dennison Corporation, Pasadena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162-5 ; 162-4 ;
Abstract
A tackified, mixed rubber, hot melt PSA deinking composition and an improved process for removing inks and other contaminants from printed wastepaper are provided. A preferred deinking composition contains a mixture of SB and SIS rubbers, tackified with at least one hydrocarbon resin tackifier and at least one rosin-based tackifier. In an improved deinking or recycling process, the novel composition is added to a paper slurry, either directly or as PSA-coated paper or label stock, and significantly reduces the number of contaminants that remain after screening and forward cleaning.