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.

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.

Abstract: A thermosensitive recording adhesive label has a support, a thermosensitive coloring layer provided on one side of the support, and a thermosensitive adhesive layer which is formed on the other side of the support, opposite to the side of the thermosensitive coloring layer with respect to the support, and is adhesive above room temperature, with the thermosensitive coloring layer having a surface smoothness of 200 to 10,000 sec when measured by the method of Ohken-shiki prescribed in Japan Tappi No. 5, and the thermosensitive adhesive layer having a surface smoothness of 60 to 3,000 sec in terms of Bekk's smoothness.