Invention Grant
- Patent Title: Reticulated thermoplastic film and method of making the same
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Application No.: US13901015Application Date: 2013-05-23
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Publication No.: US09944764B2Publication Date: 2018-04-17
- Inventor: Neelakandan Chandrasekaran , Thomas P. Hanschen , Timothy P. Pariseau , William C. Unruh
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Main IPC: B32B3/10
- IPC: B32B3/10 ; B32B7/12 ; B29D28/00 ; C08J5/18 ; B29C55/14 ; B32B3/26 ; A61F13/62

Abstract:
A reticulated thermoplastic film includes a backing with openings and discrete elements protruding from the first major surface. There are two discrete elements aligned in a first direction abutting opposite ends of any given opening. In a second direction perpendicular to the first direction, there is one discrete element between the given opening and an adjacent opening aligned in the second direction. Each portion of the backing around the given opening is plastically deformed in its lengthwise direction and typically has higher stretch-induced molecular orientation at its edge adjacent the given opening than at its midpoint. The openings are often retractable. A method of making a reticulated thermoplastic film is also disclosed. The method includes stretching a thermoplastic backing with a plurality of discrete elements in the first direction. Subsequently stretching the backing in the second direction forms a tear in the backing between two adjacent discrete elements.
Public/Granted literature
- US20140349062A1 RETICULATED THERMOPLASTIC FILM AND METHOD OF MAKING THE SAME Public/Granted day:2014-11-27
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