METHODS FOR ACHIEVING IMPROVED BOND STRENGTH BETWEEN UNVULCANIZED AND VULCANIZED RUBBERS

An improved method for achieving improved bond strength between components of unvulcanized and at least partially vulcanized rubbers the improvement comprising the steps of selected two unvulcanized rubber components (10. 12) for the manufacture of a vulcanized rubber article (21, 25, 35); treating...

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Bibliographische Detailangaben
Hauptverfasser:	BOEHM, GEORG G. A, CETNAR, JAMES F
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	An improved method for achieving improved bond strength between components of unvulcanized and at least partially vulcanized rubbers the improvement comprising the steps of selected two unvulcanized rubber components (10. 12) for the manufacture of a vulcanized rubber article (21, 25, 35); treating one of the components under conditions that will establish a gradient crosslink density with a lower crosslink concentration at the surface (43); applying the other rubber component to the surface, at least one of the components containing crosslinking agents; and covulcanizing the components together.