Invention Grant
- Patent Title: Stretched films with maintained tear resistance and methods for making the same
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Application No.: US14460783Application Date: 2014-08-15
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Publication No.: US09487332B2Publication Date: 2016-11-08
- Inventor: Michael G. Borchardt , Robert T. Dorsey , Shaun T. Broering
- Applicant: The Glad Products Company
- Agent Thomas C. Feix
- Main IPC: B29C55/06
- IPC: B29C55/06 ; B29C55/28 ; B65D33/00 ; B29C43/24 ; B29D7/01 ; C08J5/18 ; C08L23/04 ; B29C47/00 ; B29C55/00 ; B29K23/00 ; B29L7/00

Abstract:
Methods of stretching thermoplastic films in the machine direction include elongating the films in the machine direction without significantly reducing the films' machine-direction tear resistance. In one or more implementations, methods of stretching thermoplastic films include reducing the gauge of the films while substantially maintaining the films' machine-direction tear resistance. The methods can involve uniformly cold stretching the films by stretching the films to a draw of about one hundred and eighty percent, or less, of the films' original length.
Public/Granted literature
- US20140357826A1 STRETCHED FILMS WITH MAINTAINED TEAR RESISTANCE AND METHODS FOR MAKING THE SAME Public/Granted day:2014-12-04
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