Title:
LADDER CORD OF BLIND AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP3862704
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve accuracy of a contracting degree of a vertical cord on one side of a ladder cord of a blind, eliminate poor appearance caused by variation in inclination angles of slat plates and improve balance of natural lighting.
SOLUTION: The ladder cord 1, comprising two vertical cords 2a, 2b arranged in parallel and a horizontal cord 3 stretched at a predetermined pitch between the vertical cords 2a, 2b, is paid out continuously and is sent into a processing furnace 23 which includes a processing member 24 having a number of tooth profiles of different right-left lengths arranged at predetermined intervals and protruding from its surface, and also includes a built-in heating source. Inside the processing furnace 23, an enclosed window 6 of the ladder cord formed by the horizontal cord 3 is processed and conveyed while being brought into close contact with and fitted to the protruding tooth profiles 24a of the processing member 24 so that the shape of the enclosed window of the ladder cord 1 may be made to have the same shape as the tooth profiles 24a of the processing member 24, which is then is fixed. Then the ladder cord 1 is separated from the tooth profiles 24a and is sent out of the processing furnace 23. After being sent out, sewing is performed in a sewing device 29 and the vertical cord 2b of the two vertical cords is sewed at predetermined intervals to make it shorter than the other vertical cord 2a.
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| JPS56108488 | VENETIAN BLIND |
Inventors:
Hashimoto Tadakatsu
Application Number:
JP2004056087A
Publication Date:
December 27, 2006
Filing Date:
March 01, 2004
Export Citation:
Assignee:
Yokota Co., Ltd.
International Classes:
E06B9/303; E06B9/382; F21S11/00; (IPC1-7): E06B9/303; E06B9/382; F21S11/00
Domestic Patent References:
| JP2002303085A | ||||
| JP10317850A |
Attorney, Agent or Firm:
Haruka Oda