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:
Dec. 14, 1999
Filed:
Jul. 07, 1997
Jay Chiehlung Hsu, Alpharetta, GA (US);
Nauman Noorali Lakhani, Roswell, GA (US);
Reginald Smith, Dunwoody, GA (US);
Kimberly-Clark Worldwide, Inc., Neenah, WI (US);
Abstract
A method of making sanitary paper products from newspapers. The method includes the steps of: (a) pulping newspapers in water with agitation to produce a pulp slurry, the fiber in the newspapers having an oil content ranging from about 0.025% to about 2.0%, by weight, and the slurry having a consistency between about 3% and about 18% and a pH below about 8.0; (b) adding a surfactant to the pulp slurry and maintaining the pulp slurry at a temperature above about 100.degree. F. for at least 15 minutes such that a substantial quantity of the oil in the old newspaper is retained; (c) increasing the consistency of the slurry to between about 3.5% and about 18%; and (d) using the treated pulp as a source of fibers in a paper making process to produce sanitary paper products.