Title:
ULTRASONIC WELDING DEVICE AND ULTRASONIC WELDING METHOD OF SHEET-SHAPED MEMBER ASSOCIATED WITH ABSORBENT ARTICLE
Document Type and Number:
WIPO Patent Application WO/2015/104879
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. The outer circumference face of the rotating member further comprises a first zone and a second zone in respectively different locations in the CD direction. 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 when the ultrasonic processing member passes through the first zone in either the outbound leg or the return leg of the reciprocal movement, to be different from the amount of ultrasonic energy (J/m) which is inputted per unit length in the CD direction when the ultrasonic processing member passes through the second zone in either the outbound leg or the return leg of the reciprocal movement.
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Inventors:
YAMAMOTO HIROKI (JP)
MATSUMOTO YOSHIHIKO (JP)
MATSUMOTO YOSHIHIKO (JP)
Application Number:
PCT/JP2014/077097
Publication Date:
July 16, 2015
Filing Date:
October 09, 2014
Export Citation:
Assignee:
UNICHARM CORP (JP)
International Classes:
A61F13/15; A61F13/49; B29C65/08
Foreign References:
| JPH10513128A | 1998-12-15 | |||
| JPH10291082A | 1998-11-04 | |||
| JP2000015701A | 2000-01-18 | |||
| JP2010094883A | 2010-04-30 | |||
| JPH0857959A | 1996-03-05 | |||
| JP2013233729A | 2013-11-21 | |||
| JP2010513128A | 2010-04-30 | |||
| JP2013193450A | 2013-09-30 |
Other References:
See also references of EP 3092993A4
Attorney, Agent or Firm:
ISSHIKI & CO. (JP)
All international patent business corporation (JP)
All international patent business corporation (JP)
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