Invention Grant
- Patent Title: Processes and apparatus for making transversely drawn films with substantially uniaxial character
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Application No.: US15131283Application Date: 2016-04-18
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Publication No.: US10913199B2Publication Date: 2021-02-09
- Inventor: William W. Merrill , Jeffery N. Jackson , Andrew T. Ruff , John A. Wheatley , Dennis L. Krueger
- 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
- Agent Robert S. Moshrefzadeh
- Main IPC: B29C55/08
- IPC: B29C55/08 ; B29C55/20 ; B29C69/00 ; B29L11/00 ; G02B5/30 ; B29K67/00
Abstract:
A stretcher for processing a film is described. In particular, stretcher receives a film, graps edge portions of the film, conveys the film in a machine direction, and moves the opposing edge portions along diverging; substantially parabolic paths to form a stretched film.
Public/Granted literature
- US20160229111A1 PROCESSES AND APPARATUS FOR MAKING TRANSVERSELY DRAWN FILMS WITH SUBSTANTIALLY UNIAXIAL CHARACTER Public/Granted day:2016-08-11
Information query
