Title:
METHOD OF MANUFACTURING UNEVEN-SURFACE SHEET
Document Type and Number:
WIPO Patent Application WO/2017/033919
Kind Code:
A1
Abstract:
Provided is a method of manufacturing an uneven-surface sheet, comprising: a stretching step in which a first non-woven fabric (2) is subjected to first and second stretching processes using a stretching device; and a bonding step in which a second non-woven fabric (3) is bonded using heat to the first non-woven fabric (2) that has an uneven shape. The stretching device is provided with: a center roll (410) having a stretching part (411) that has an unevenness composed of large-diameter protrusions and small-diameter recesses and non-stretching parts (412) that are located on both sides of the stretching part (411) and are provided with non-woven fabric holding means; and a plurality of push-in rolls (420, 430) that are provided with large-diameter protrusions that push a non-woven fabric into the insides of the small-diameter recesses of the stretching part. In the stretching step, the first non-woven fabric (2) is subjected to a first stretching process by a first push-in roll (420) while both sides of the first non-woven fabric (2) are held by the non-woven fabric holding means, and then to a second stretching process by a second push-in roll (430) in which the depth of pushing is greater than in the first stretching process.
More Like This:
Inventors:
NAKANO YASUHIRO (JP)
HARADA TAKUAKI (JP)
MATSUNAGA RYUJI (JP)
HARADA TAKUAKI (JP)
MATSUNAGA RYUJI (JP)
Application Number:
PCT/JP2016/074486
Publication Date:
March 02, 2017
Filing Date:
August 23, 2016
Export Citation:
Assignee:
KAO CORP (JP)
International Classes:
D06C3/06
Foreign References:
| JP2014034145A | 2014-02-24 | |||
| JP2002113773A | 2002-04-16 | |||
| JP2014520213A | 2014-08-21 |
Attorney, Agent or Firm:
SHOWA INTERNATIONAL PATENT FIRM (JP)
Download PDF: