Invention Grant
- Patent Title: Films for use as interleaves between substrates
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Application No.: US16159170Application Date: 2018-10-12
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Publication No.: US11192338B2Publication Date: 2021-12-07
- Inventor: Bankim Bhupendra Desai , Carl Douglas Ray , Ricky Santoso , Shailesh Chunilal Patel , Kevin A. Brady
- Applicant: TREDEGAR SURFACE PROTECTION, LLC
- Applicant Address: US VA N. Chesterfield
- Assignee: TREDEGAR SURFACE PROTECTION, LLC
- Current Assignee: TREDEGAR SURFACE PROTECTION, LLC
- Current Assignee Address: US VA N. Chesterfield
- Agency: Karceski IP Law, PLLC
- Main IPC: B32B15/085
- IPC: B32B15/085 ; B29C44/50 ; B29C44/24 ; B29C48/00 ; B29C44/34 ; B32B27/06

Abstract:
Films may be used as interleaves between hard and non-compressible surfaces such as surfaces of sheets or plates made of glass, metal, such as steel, polycarbonate, and/or poly(methyl methacrylate). The films may be embossed and/or may include a foamed core layer having a plurality of micro-voids. In particular, the films may include a polyolefin, a basis weight of between about 30 gsm and about 70 gsm, an embossed thickness of between about 150 microns and 800 microns, and a stiffness of between about 150 grams and about 750 grams according to the Circular Bend Stiffness Test.
Public/Granted literature
- US11141955B2 Films for use as interleaves between substrates Public/Granted day:2021-10-12
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