Title:
ULTRASONIC WELDING DEVICE AND ULTRASONIC WELDING METHOD OF SHEET-SHAPED MEMBER RELATING TO ABSORBENT ARTICLE
Document Type and Number:
WIPO Patent Application WO/2015/104880
Kind Code:
A1
Abstract:
Provided is an ultrasonic welding device which carries out an ultrasonic weld process on a sheet-shaped member which is conveyed while being wound around the outer circumference face of a rotating member which rotates about a central axis. The ultrasonic welding device comprises the rotating member, and an ultrasonic processing unit which rotates about the central axis together with the rotating member. The ultrasonic processing unit further comprises a hone which ultrasound oscillates, and an anvil which sandwiches the sheet-shaped member together with the hone. At least one of the ultrasonic processing members, that is, the hone and/or the anvil, is guided to be capable of reciprocal movement in a CD direction which intersects the direction of the conveyance of the sheet-shaped member, and the ultrasonic processing member carries out reciprocal movement in the CD direction with respect to a portion of the sheet-shaped member which is wound about the rotating member. Both the hone and the anvil make contact with the sheet-shaped member in a prescribed zone in the CD direction upon the outer circumference face of the rotating member in both the outbound leg and the return leg of the reciprocal movement. The ultrasonic welding device further comprises an ultrasonic energy adjustment unit which makes the amount of ultrasonic energy (J/m) which is inputted per unit length in the CD direction in the prescribed zone in the outbound leg, to be different from the amount of ultrasonic energy (J/m) which is inputted per unit length in the CD direction in the prescribed zone in the return leg.
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Inventors:
YAMAMOTO HIROKI (JP)
MATSUMOTO YOSHIHIKO (JP)
MATSUMOTO YOSHIHIKO (JP)
Application Number:
PCT/JP2014/077104
Publication Date:
July 16, 2015
Filing Date:
October 09, 2014
Export Citation:
Assignee:
UNICHARM CORP (JP)
International Classes:
A61F13/15; A61F13/49; B29C65/08
Domestic Patent References:
| WO2013027390A1 | 2013-02-28 |
Foreign References:
| JPH10513128A | 1998-12-15 | |||
| JPH10291082A | 1998-11-04 | |||
| JP2000015701A | 2000-01-18 | |||
| JPS62282914A | 1987-12-08 | |||
| JPH10513128A | 1998-12-15 | |||
| JP2013193450A | 2013-09-30 |
Other References:
See also references of EP 3092995A4
Attorney, Agent or Firm:
ISSHIKI & CO. (JP)
All international patent business corporation (JP)
All international patent business corporation (JP)
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