Invention Grant
- Patent Title: Polyethylene film
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Application No.: US15561727Application Date: 2016-03-22
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Publication No.: US10556407B2Publication Date: 2020-02-11
- Inventor: Wakato Tomatsu , Hirokazu Ogi , Akira Matsuda
- Applicant: TOYOBO CO., LTD.
- Applicant Address: JP Osaka-shi
- Assignee: TOYOBO CO., LTD.
- Current Assignee: TOYOBO CO., LTD.
- Current Assignee Address: JP Osaka-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2015-064721 20150326
- International Application: PCT/JP2016/058929 WO 20160322
- International Announcement: WO2016/152835 WO 20160929
- Main IPC: B32B27/08
- IPC: B32B27/08 ; B32B27/32 ; B65D65/40 ; B32B27/18 ; B32B27/30 ; B32B27/34 ; B32B27/36 ; B32B27/40 ; C08L23/08

Abstract:
Provided is a polyethylene film that is more excellent in blocking in unwinding the film in the film roll state, and more excellent in blocking between sealants after lamination with a base material, and also having transparency and excellent heat sealing property even at low temperatures. A polyethylene film wherein in at least either face, a ratio between an arithmetic mean inclination angle in a machine direction of film (RΔa (MD) [°]), and an arithmetic mean inclination angle in a direction perpendicular to the machine direction (RΔa (TD) [°]) satisfies the following formula (1): 1.2≤RΔa(TD)/RΔa(MD)≤3.6 (1) (RΔa (MD): arithmetic mean inclination angle measured in the machine direction of film, and RΔa (TD): arithmetic mean inclination angle measured in the direction perpendicular to the machine direction of film).
Public/Granted literature
- US20180104938A1 POLYETHYLENE FILM Public/Granted day:2018-04-19
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