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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING STRETCHABLE FILM
Document Type and Number:
WIPO Patent Application WO/2019/150897
Kind Code:
A1
Abstract:
This method for manufacturing a stretchable film includes: respectively gripping left- and right-end portions of a long film with variable pitch-type left and right clips having pitches that are variable in the vertical direction, and changing the clip pitch of at least one among the left and right clips to obliquely stretch the film; releasing the film from the clips and cooling the film; and applying a longitudinal tension of 100-400 N/m to the film while heating the film to Tg-30°C to Tg-10°C using a contactless heating means.

Inventors:
HIRATA Satoshi (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
SHIMIZU Takashi (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
YAMAMOTO Shinji (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
MURAOKA Atsushi (1-1-2 Shimohozumi, Ibaraki-sh, Osaka 80, 〒5678680, JP)
Application Number:
JP2019/000424
Publication Date:
August 08, 2019
Filing Date:
January 10, 2019
Export Citation:
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Assignee:
NITTO DENKO CORPORATION (1-1-2, Shimohozumi Ibaraki-sh, Osaka 80, 〒5678680, JP)
International Classes:
G02B5/30; B29C55/04; B29L7/00; B29L11/00
Domestic Patent References:
WO2017150495A12017-09-08
Foreign References:
JP2017009883A2017-01-12
JP2017109262A2017-06-22
JP2014194483A2014-10-09
JP2011215263A2011-10-27
Attorney, Agent or Firm:
MOMII Takafumi (7th Floor, Aqua Dojima East 1-4-4, Dojimahama, Kita-ku, Osaka-sh, Osaka 04, 〒5300004, JP)
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