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 10335973 B1

Date of Patent:

Jul. 02, 2019

Filed:

Dec. 09, 2016

Hydro-formed film with three-dimensional micro-apertures

Applicant:

Tredegar Film Products Corporation, Richmond, VA (US);

Inventor:

Paul Eugene Thomas, Terre Haute, IN (US);

Assignee:

TREDEGAR FILM PRODUCTS CORPORATION, Richmond, VA (US);

Attorney:

Karceski IP Law, PLLC

Primary Examiner:

Jeffrey A Vonch

Int. Cl.

CPC ...

B26F 1/26 (2006.01); A61F 13/511 (2006.01); A61F 13/512 (2006.01); A61F 13/513 (2006.01); B29C 41/26 (2006.01); B29C 41/28 (2006.01); B29C 41/38 (2006.01); B29C 41/50 (2006.01); A61F 13/15 (2006.01); B29L 31/48 (2006.01); B29K 101/12 (2006.01); B29L 7/00 (2006.01); B29C 51/10 (2006.01); B29D 28/00 (2006.01);

U.S. Cl.

CPC ...

B26F 1/26 (2013.01); A61F 13/15731 (2013.01); A61F 13/512 (2013.01); A61F 13/5121 (2013.01); A61F 13/5126 (2013.01); A61F 13/51104 (2013.01); B29C 41/26 (2013.01); B29C 41/28 (2013.01); B29C 41/38 (2013.01); B29C 41/50 (2013.01); A61F 13/5122 (2013.01); A61F 2013/15284 (2013.01); A61F 2013/15829 (2013.01); A61F 2013/5127 (2013.01); A61F 2013/51147 (2013.01); A61F 2013/51338 (2013.01); B29C 51/10 (2013.01); B29C 2791/006 (2013.01); B29C 2791/007 (2013.01); B29C 2793/0045 (2013.01); B29D 28/00 (2013.01); B29K 2101/12 (2013.01); B29L 2007/00 (2013.01); B29L 2031/4878 (2013.01); Y10T 428/24182 (2015.01); Y10T 428/24281 (2015.01);

Abstract

A method of processing a polymeric web includes providing a forming screen configured for supporting and moving with the web in a machine direction. The forming screen has a plurality of elliptical screen openings, each having a major axis perpendicular to the machine direction and a minor axis parallel to the machine direction. The method includes continuously depositing the web onto the forming screen and passing the web and forming screen through a water stream having a pressure level sufficient to cause the web to be forced into the screen openings, thereby forming protrusions extending from the planar surface of the web. Each protrusion has an apex, an opening at the apex, and an elliptical cross-section parallel to the planar surface of the web. The elliptical cross-section has a protrusion axis ratio that may be selected so as to produce a desired protrusion axis ratio.

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