METHOD FOR FORMING RUSTPROOF FILM ON PC STRAND
LaoBiz.com profiles the Laos Patent “METHOD FOR FORMING RUSTPROOF FILM ON PC STRAND” from open registry fields, filed by KUROSAWA CONSTRUCTION CO., LTD on 2013-09-11; current status: Abandoned. Identifiers include application No. P/278; DIP id LAP278; protection kind Patent - Foreign. Key dates: publication 2026-01-16. Classification: B05D 3/02、B05D 5/00、B05D 7/20、B05D 7/24、D07B 1/16. Inventor(s)/designer(s): Kei HIRAI, Ryohei KUROSAWA. Abstract hint: Provided is a method for the highly efficient formation of a uniform, high-quality film with which increased line speed, improved productiv…. Use LaoBiz.com to hop between this IP record, related filings by the same applicant, and the matched company profile when present.
P/278
Mark
Key facts
- Type
- Patent
- App. no.
P/278- Status
- Abandoned
- Applicant
- KUROSAWA CONSTRUCTION CO., LTD
- Agent
- LAO Interconsult Co., Ltd
- Filing date
- 2013-09-11
- Publication
- 2026-01-16
- Protection kind
- Patent - Foreign
- Applicant address
- KUROSAWA CONSTRUCTION CO., LTD · 1-26-7, Wakaba-cho, Chofu-shi, Tokyo, 182-003 Japan · JP
- Agent address
- LAO Interconsult Co., Ltd · Ban Sphanthong Tai, Sokpaluang Road P.O.Box 7039, Vientiane Capital, Lao PDR · LA
- Nice / IPC classes
- B05D 3/02 · B05D 5/00 · B05D 7/20 · B05D 7/24 · D07B 1/16
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination Refused / terminated
-
Substantive examination
-
Published
-
Granted
Related records
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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 PC stranded (1) conveying the PC strand through a process line, including untwisting step of untwisting the PC strand to separate surrounding wires (1b) from a core wire (1a) in the PC strand; a coating step of applying a synthetic resin powder coating material on each outer peripheral surface of the core wire and the surrounding wires in the untwisted state; a heating step of heating to adhere the coating uniformly on the core wire and the surrounding wires; a cooling step of cooling the coating uniformly adhered on the core wire and the surrounding wires through the coating step and the heating step; a twisting step of twisting the surrounding wires with a resin film (26) to restore the original state with the core wire provided with the resin film, wherein: the heating step includes pre-heating and post-heating performed before and after the coating step of applying the synthetic resin powder coating material, the heating temperature in the post-heating is set in the range of 150-250 C, the heating temperature in the post-heating is set in the range of 120-220 C, and the heating temperature in the pre-heating is set 30 to 130 C higher than the heating temperature in the post-heating, the synthetic resin powder coating material has an average grain size of 40 to 50 µm to provide a thickness set for the resin film, the series of process lines has a line speed of 5 to 10 m/min, wherein: resin film in thickness of 200±80 µm is formed respectively on the core wire and the surrounding wires
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 PC stranded (1) conveying the PC strand through a process line, including untwisting step of untwisting the PC strand to separate surrounding wires (1b) from a core wire (1a) in the PC strand; a coating step of applying a synthetic resin powder coating material on each outer peripheral surface of the core wire and the surrounding wires in the untwisted state; a heating step of heating to adhere the coating uniformly on the core wire and the surrounding wires; a cooling step of cooling the coating uniformly adhered on the core wire and the surrounding wires through the coating step and the heating step; a twisting step of twisting the surrounding wires with a resin film (26) to restore the original state with the core wire provided with the resin film, wherein: the heating step includes pre-heating and post-heating performed before and after the coating step of applying the synthetic resin powder coating material, the heating temperature in the post-heating is set in the range of 150-250 C, the heating temperature in the post-heating is set in the range of 120-220 C, and the heating temperature in the pre-heating is set 30 to 130 C higher than the heating temperature in the post-heating, the synthetic resin powder coating material has an average grain size of 40 to 50 µm to provide a thickness set for the resin film, the series of process lines has a line speed of 5 to 10 m/min, wherein: resin film in thickness of 200±80 µm is formed respectively on the core wire and the surrounding wires
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