Title:
フィルム延伸装置および延伸フィルムの製造方法
Document Type and Number:
Japanese Patent JP7066427
Kind Code:
B2
Abstract:
The invention provides a clamp type film stretching device. The fracture of film caused by the increase of the elongation ratio can be suppressed. The clamp type film stretching device has left and right clamps of variable pitch type. The left and right clamps grip the left and right ends of the film to be stretched and travels in the stretching region, and the clamp spacing in the longitudinal direction varies with the travel, and the clamps grip positions of the film at a distance of 20 mm or more from the left and right end edges.
Inventors:
Ryo Shimizu
Hiroki Senda
Masashi Yamamoto
Hiroki Senda
Masashi Yamamoto
Application Number:
JP2018016596A
Publication Date:
May 13, 2022
Filing Date:
February 01, 2018
Export Citation:
Assignee:
NITTO DENKO CORPORATION
International Classes:
B29C55/20; B29C55/04; B29C55/16
Domestic Patent References:
| JP2015182449A | ||||
| JP2014097561A | ||||
| JP2007253518A | ||||
| JP2017001367A | ||||
| JP2013195939A | ||||
| JP2017062459A | ||||
| JP2010046879A | ||||
| JP62278018A |
Attorney, Agent or Firm:
Takafumi Masui
Atsuko Uenoyama
Atsuko Uenoyama