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. 27, 1981
Filed:
Feb. 01, 1979
Applicant:
Inventors:
John L Metcalfe, Wirral, GB;
Douglas Wraige, Newton, GB;
Assignee:
Lever Brothers Company, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428215 ; 427242 ; 427244 ; 428305 ; 428311 ;
Abstract
After washing fabrics can be treated with a conditioning agent, for example a fabric softener. In one method of treatment a substrate impregnated with a conditioning agent is contacted with the washed fabrics in tumble drier. The agent is transferred to the fabric during the repeated contacts between the substrate and fabric. The invention is the use of a substrate having a more dense structure at the outer surface. This more dense structure, which can be formed from laminated foam polymers, reduces the release of the agent so that the release is more even over a number of cycles.