Method of crosslinking rubber and plastic moldings

A rubber or plastics molded article is made, e.g. by extrusion, containing a blowing agent and cross-linking agent, and is gradiated with electron beams, preferably from 2 (or 3) directions (Figures 1-3) at a low dose of not more than 50 Mrad and a voltage of not more than 3000kV to cross-link the s...

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Bibliographic Details
Main Authors AOSHIMA, MASASHI, KITAGAWA, YOSHIHIKO, JINNO, TADASHI
Format Patent
LanguageEnglish
French
German
Published 17.09.1986
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:A rubber or plastics molded article is made, e.g. by extrusion, containing a blowing agent and cross-linking agent, and is gradiated with electron beams, preferably from 2 (or 3) directions (Figures 1-3) at a low dose of not more than 50 Mrad and a voltage of not more than 3000kV to cross-link the surface layer only, the surface appearance and properties are thus preserved during subsequent steps. The molding is then heated to complete the cross-linking and to cause foaming of the flowing agent to make an expanded (or cellular) product. A separate cross-linkable surface layer can be provided by extrusion or coating. Composite moldings, e.g. of expanded and unexpanded material, can be produced. A continuous molding can be treated in a in a continuous process of extrusion, irradiation and foaming.
Bibliography:Application Number: EP19850307271