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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.:

US 9744755 B1

PDFFull Text
Date of Patent:
Aug. 29, 2017

Filed:

Apr. 01, 2013

Method of making absorbent foam composites

Applicant:

3m Innovative Properties Company, St. Paul, MN (US);

Inventors:

Delton R. Thompson, Jr., Lake Elmo, MN (US);

Timothy V. Stagg, Hudson, WI (US);

Thomas R. LaLiberte, Inver Grove Heights, MN (US);

Leigh E. Wood, Woodbury, MN (US);

Assignee:

3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);

Attorneys:

Steven Bern

Lynn R. Hunsberger

Primary Examiner:

William Bell

Int. Cl.
CPC ...
B32B 37/15 (2006.01); B32B 38/04 (2006.01); A61F 13/534 (2006.01); B32B 3/26 (2006.01); A61F 13/15 (2006.01); B32B 5/18 (2006.01); B32B 5/24 (2006.01); B32B 27/12 (2006.01); B32B 3/12 (2006.01); B32B 37/26 (2006.01); B32B 38/00 (2006.01); A61F 13/53 (2006.01);
U.S. Cl.
CPC ...
B32B 38/04 (2013.01); A61F 13/15617 (2013.01); A61F 13/534 (2013.01); B32B 3/12 (2013.01); B32B 3/266 (2013.01); B32B 5/18 (2013.01); B32B 5/24 (2013.01); B32B 27/12 (2013.01); A61F 2013/530802 (2013.01); B32B 2037/268 (2013.01); B32B 2038/0084 (2013.01); B32B 2038/045 (2013.01); B32B 2038/047 (2013.01); B32B 2262/062 (2013.01); B32B 2266/025 (2013.01); B32B 2266/0257 (2013.01); B32B 2266/0264 (2013.01); B32B 2266/0278 (2013.01); B32B 2307/726 (2013.01); B32B 2375/00 (2013.01); B32B 2556/00 (2013.01); Y10T 428/24331 (2015.01); Y10T 428/249953 (2015.04);
Abstract

A method of making absorbent foam composites and absorbent foam composites produced therefrom. The method comprises casting an absorbent foam layer having a first side and a second side opposite the first side onto a barrier layer having a first side and second side opposite the first side, where the second side of the absorbent foam layer is in contact with the first side of the barrier layer; joining a second absorbent layer to the second side of the barrier layer before, during, or after the casting step; and breaching the barrier layer after the casting step so that the foam layer and second absorbent layer are in fluid communication. The absorbent foam composites can be used in a variety of applications, including personal hygiene articles, medical bandages, pet pads and agricultural pads.

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