Rubber product surface treating method
AssigneeRegitex Co., Ltd.
InventorsHiroyuki Kaya, Takashi Sugai, Yousuke Yamada
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Abstract
By causing a rubber product to be immersed into or coated with a treating liquid prepared by adding hydrogen peroxide and other additives such as surfactant, alcohol, thickening agent, other surface tension depressant into an aqueous acetic acid or formic acid solution, it becomes possible to efficiently epoxidize the surface layer of the rubber product to thereby provide the rubber product surface with non-adhesive property, sliding property and other barriering properties, without causing toxic gases and contamination due to powder dust during the manufacturing process and without deteriorating properties inherent in the rubber product such as elasticity, elongation and tensile strength.
Claims2
A surface treating method for providing a surface of a unvulcanized or vulcanized rubber product with non-adhesive property, sliding property, and other barrier properties, comprising the step of:
- surface treating the rubber product so as to epoxidize a surface layer of the rubber product, by an aqueous treating solution prepared by adding hydrogen peroxide into an aqueous acetic acid or formic acid solution, in which the concentration of the aqueous acetic acid or formic acid solution is in a range of 21 to 80% and the mole ratio of hydrogen peroxide/acid is in a range of 0.1 inclusive to 1.0 exclusive, desirably 0.2 to 0.5.
Dependencies are inferred from the claim text.