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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 9849602 B1

PDFFull Text
Date of Patent:
Dec. 26, 2017

Filed:

Dec. 17, 2010

Method for making extrusion coated perforated nonwoven web

Applicant:

James W. Cree, Loveland, OH (US);

Inventor:

James W. Cree, Loveland, OH (US);

Assignee:

Advantage Creation Enterprise LLC, Loveland, OH (US);

Attorneys:

Hasse & Nesbitt LLC

Donald E. Hasse

Primary Examiner:

Benjamin A Schiffman

Int. Cl.
CPC ...
B26F 1/20 (2006.01); A61F 13/512 (2006.01); B26F 1/24 (2006.01); B26F 1/26 (2006.01); B32B 3/26 (2006.01); B32B 3/30 (2006.01); B32B 5/26 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); B32B 38/04 (2006.01); B32B 37/15 (2006.01); B32B 38/18 (2006.01);
U.S. Cl.
CPC ...
B26F 1/20 (2013.01); A61F 13/5121 (2013.01); B26F 1/24 (2013.01); B26F 1/26 (2013.01); B32B 3/266 (2013.01); B32B 3/30 (2013.01); B32B 5/26 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); B32B 38/04 (2013.01); B32B 37/153 (2013.01); B32B 38/1858 (2013.01); B32B 2038/047 (2013.01); B32B 2305/20 (2013.01); B32B 2323/04 (2013.01); B32B 2555/02 (2013.01); Y10T 428/24322 (2015.01); Y10T 428/24331 (2015.01);
Abstract

A method for making an extrusion coated perforated nonwoven web. The method comprises the steps of extruding a molten polyethylene coating onto a nonwoven web, and aperturing the molten polyethylene coating through heat and pneumatic pressure differential to create microperforations therein at a density of between about 35 and about 120 perforations per linear inch. The resulting microperforated nonwoven web is then thermomechanically perforated by feeding it through perforating rolls, at least one of which has raised protuberances to create macroperforations that extend though at least the polyethylene coating. The macroperforations have a density of between about 6 and about 35 perforations per linear inch. The perforated nonwoven web is useful as a topsheet for absorbent articles.

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