Title:
金属製のスライドファスナー用エレメント
Document Type and Number:
Japanese Patent JP4215660
Kind Code:
B2
Abstract:
A metallic slide fastener element in which an exposed portion outside of an element is finished uniformly with a high smoothness and the fixing strength to a fastener tape is intensified, and a method for effectively manufacturing the same element, wherein a metallic flat type wire rod (11) is placed on a die (13) and the flat type wire rod (11) is punched out with a punch (12) so as to produce a slide fastener element (1), and at this time, a mouth on a punch side of the die (13) or a peripheral edge (13a) of the die is chamfered at a radius of 0.01 to 1.0 mm and a clearance (T) between the punch (12) and the die (13) is set to 0 to 30 mu m, so that an element (1), which has a cut surface comprising a shear surface (C1) of 80% or more and a fracture surface (C2) of less than 20% and is suitable as a slide fastener to be attached to a high quality product, is obtained.
Inventors:
Teruo Ozaki
Makoto Yoshida
Tadashi Furusato
Makoto Yoshida
Tadashi Furusato
Application Number:
JP2004049520A
Publication Date:
January 28, 2009
Filing Date:
February 25, 2004
Export Citation:
Assignee:
YKK Co., Ltd.
International Classes:
A44B19/02; A44B19/06; B21D53/50; B21D53/52; B21F45/18
Domestic Patent References:
| JP59010858B1 | ||||
| JP2002327730A | ||||
| JP56062635A | ||||
| JP2003001337A | ||||
| JP8164428A | ||||
| JP9314250A | ||||
| JP2002207023A |
Attorney, Agent or Firm:
Takeo Noguchi
Ichiro Agata
Katsutoshi Shiozawa
Ichiro Agata
Katsutoshi Shiozawa