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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 9694538 B1

PDFFull Text
Date of Patent:
Jul. 04, 2017

Filed:

Sep. 03, 2014

Articles having a multilayer structure including undercut features interlocked with an adhesive, and methods of making same

Applicant:

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

Inventors:

Joseph D. Rule, Woodbury, MN (US);

Mario A. Perez, Burnsville, MN (US);

Kevin M. Lewandowski, Inver Grove Heights, MN (US);

Robert A. Follensbee, Oakdale, MN (US);

Assignee:

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

Attorney:

Adrian L. Pishko

Primary Examiner:

David Sample

Assistant Examiner:

Donald M Flores, Jr

Int. Cl.
CPC ...
B29C 65/00 (2006.01); B29C 65/48 (2006.01); B32B 27/32 (2006.01); B32B 7/12 (2006.01); B32B 37/12 (2006.01); B29C 37/00 (2006.01); B32B 3/30 (2006.01); B32B 9/04 (2006.01); B32B 15/085 (2006.01); B32B 21/08 (2006.01); B32B 25/08 (2006.01); B32B 27/06 (2006.01); B32B 27/08 (2006.01); B32B 27/10 (2006.01); B32B 27/12 (2006.01); B29K 23/00 (2006.01); B29L 9/00 (2006.01);
U.S. Cl.
CPC ...
B29C 66/30321 (2013.01); B29C 37/0014 (2013.01); B29C 37/0078 (2013.01); B29C 65/483 (2013.01); B29C 66/02 (2013.01); B32B 3/30 (2013.01); B32B 7/12 (2013.01); B32B 9/045 (2013.01); B32B 15/085 (2013.01); B32B 21/08 (2013.01); B32B 25/08 (2013.01); B32B 27/065 (2013.01); B32B 27/08 (2013.01); B32B 27/10 (2013.01); B32B 27/12 (2013.01); B32B 27/32 (2013.01); B32B 37/12 (2013.01); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29L 2009/00 (2013.01); B32B 2305/07 (2013.01);
Abstract

Articles are provided, having a multilayer structure including (a) a first layer formed from polyolefin and including undercut features formed on and extending from an integral backing; (b) a second layer including an adhesive having a Shore D hardness of greater than 59 when cured; and (c) a third layer including a substrate. The second layer is interlocked with the undercut features, the third layer is adhered to the adhesive, and the second layer is disposed between the first layer and the third layer. A method is also provided including (a) depositing a polyolefin resin into a mold cavity to form a first layer including undercut features; (b) demolding the first layer from the mold cavity at a rate of at least 150 millimeters per minute; (c) applying a curable adhesive to the undercut features to form a second layer attached to the first layer; and (d) attaching a third layer including a substrate to the second layer.

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