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1. (WO2014208237) BINDING TOOL

Pub. No.:    WO/2014/208237    International Application No.:    PCT/JP2014/063800
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Tue May 27 01:59:59 CEST 2014
IPC: B42B 5/00
Applicants: KOKUYO CO., LTD.
Inventors: YAMADA, Toshiko
山田 登志子
OKITSU, Akinori
興津 彰規
長谷川 草
[Problem] To provide a binding tool with which at least a given holding force can be secured for the bound sheets even as the energy required for operation is kept low. [Solution] A binding tool capable of binding multiple sheets that have been stacked between a pair of teeth by pressing a portion of said sheets with the inclined surfaces of said teeth while stretching the sheet material. The binding tool is characterized in satisfying at least one of the following: (1) the absolute value of the angle of inclination of the inclined surface with respect to the direction in which the teeth advance and retract is less than 38°; (2) when the teeth are brought close to each other so that the length of a normal line that corresponds to the shortest distance between the inclined surfaces of the pair of teeth 0.09 mm, the length in the direction orthogonal to said normal line of the main region of pressurization by the two inclined surfaces is less than 0.18 mm; and (3) the sheet material stretching rate is greater than 1.32 and equal to or less than 1.60.