Invention Grant
US09132941B2 Stretched films with maintained tear resistance and methods for making the same
有权
具有保持抗撕裂性能的拉伸膜和制造它的方法
- Patent Title: Stretched films with maintained tear resistance and methods for making the same
- Patent Title (中): 具有保持抗撕裂性能的拉伸膜和制造它的方法
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Application No.: US14460765Application Date: 2014-08-15
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Publication No.: US09132941B2Publication Date: 2015-09-15
- Inventor: Michael G. Borchardt , Robert T. Dorsey , Shaun T. Broering
- Applicant: The Glad Products Company
- Applicant Address: US CA Oakland
- Assignee: The Glad Products Company
- Current Assignee: The Glad Products Company
- Current Assignee Address: US CA Oakland
- Agent Thomas C. Feix
- Main IPC: B65D30/00
- IPC: B65D30/00 ; B65D30/02 ; B65D33/00 ; B29C55/06 ; B29C43/24 ; B29D7/01 ; C08J5/18 ; C08L23/04 ; 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
- US20140355911A1 STRETCHED FILMS WITH MAINTAINED TEAR RESISTANCE AND METHODS FOR MAKING THE SAME Public/Granted day:2014-12-04
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