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Patent Searching and Data


Title:
METHOD FOR FORMING RUST-PROOF FILM ON PC STEEL WIRE AND PC STEEL WIRE
Document Type and Number:
WIPO Patent Application WO/2010/122931
Kind Code:
A1
Abstract:
Provided is a method for the highly efficient formation of a uniform, high-quality film with which increased line speed, improved productivity, and cost reduction can be envisaged. A method for forming a rustproof film on a PC steel wire, wherein a stranded wire (1) is formed from PC steel, side wire (1b) is untwisted from a core wire (1a), a synthetic resin powdered paint is uniformly deposited by being applied and heated over the outer periphery of the core wire and side wire in this untwisted state, the product is cooled to form a resin film (26), and then the side wire is twisted back to the original state with respect to the core wire. Pre-heating is performed before the application step and post-heating is performed after the application step, the pre-heating temperature is set 30 to 130°C higher than the post-heating temperature, a synthetic resin powdered paint having an average grain size of 40 to 50 µm is used, and the process line speed is 5 to 10 m/min.

Inventors:
KUROSAWAA RYOHEI (JP)
HIRAI KEI (JP)
Application Number:
JP2010/056667
Publication Date:
October 28, 2010
Filing Date:
April 14, 2010
Export Citation:
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Assignee:
KUROSAWA KENSETSU KK (JP)
KUROSAWAA RYOHEI (JP)
HIRAI KEI (JP)
International Classes:
B05D7/20; B05D7/24; D07B1/06; D07B1/16; D07B7/18; E04C5/08
Foreign References:
JP3172486B22001-06-04
JP2006509621A2006-03-23
JP2006212474A2006-08-17
JP2004025096A2004-01-29
JPH05195602A1993-08-03
JP3654889B22005-06-02
JPH0233386A1990-02-02
JP2691113B21997-12-17
JP3172486B22001-06-04
JP3654889B22005-06-02
Other References:
See also references of EP 2380668A4
Attorney, Agent or Firm:
TOKYO-ARPA IP & CO. (JP)
Patent business corporation Tokyo Alpa patent firm (JP)
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