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Patent Searching and Data


Title:
RUBBER ROLLER
Document Type and Number:
Japanese Patent JPH0658326
Kind Code:
A
Abstract:

PURPOSE: To simply bend a color coated steel reinforcement at predetermined angles and prevent a coated portion from peeling off by using, a rubber roller on whose metal surface a rubber layer, consisting of polyether polyurethane rubber whose hardness is 65-80° (Shore hardness D), is formed.

CONSTITUTION: Polyether polyurethane rubber is selected as a rubber layer, and the one whose hardness is 65-80° (Shore hardness D) is used. Polyurethane rubber having a specific hardness is regulated by making polyether polyol and polyisocyanate react under the existence of a bridging agent. As for a method to bend a steel reinforcement 1 in color coating by means of rubber rollers, the steel reinforcement 1 is mounted on steel reinforcement receiving stands 4 between fixed fulcrum rollers 2 and rotatable dynamic point rollers 3, and rotation in arrow directions is conducted while the steel reinforcement 1 is being pressurized by means of dynamic point rollers 3 with fulcrum rollers 2 as centers. The steel reinforcement 1 is bend gradually in response to the rotation and movement of dynamic point rollers 3, and when it is bent at desired angles, the rotation of dynamic point rollers 3 is stopped. Thus, the coating of the steel reinforcement is not peeled off.


Inventors:
GOTO GIICHI
YAMASHITA ARATA
Application Number:
JP21421392A
Publication Date:
March 01, 1994
Filing Date:
August 11, 1992
Export Citation:
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Assignee:
HOKUSHIN IND
International Classes:
B21D7/08; B32B1/08; F16C13/00; (IPC1-7): F16C13/00; B21D7/08; B32B1/08
Attorney, Agent or Firm:
Yukio Shoko (1 person outside)