Article having a one-layer or multi-layer main body with elastic properties, method for producing an article and use of aluminium hydroxide as reinforcing filler in a rubber mixture
AssigneeGmt Gummi-Metall-Technik GmbH
InventorsHEIKO MÜLLER, MARCUS PICKARD
Life of this patent
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Abstract
The invention relates to an article, more particularly an air spring bellows, having a one-layer or multi-layer main body with elastic properties, at least one layer of the main body being made up of a rubber mixture, a carbon black proportion of at least one carbon black, more particularly a total carbon black proportion of all carbon blacks, of the rubber mixture being less than 5 phr. The rubber mixture preferably contains aluminium hydroxide as a reinforcing filler. The rubber mixture can comprise chloroprene rubber as a base polymer.
Claims16
1-17. (canceled)
An air spring bellows (100) having a multi-layered main body (8) having elastic properties, the main body (8) comprising:
- an inner elastomer layer (3);
- a middle functional layer (4);
- and
- an outer elastomer layer (6);
- wherein the inner elastomer layer (3), the middle functional layer (4) and the outer elastomer layer (6) are constructed from an identical rubber mixture, in that the rubber mixture comprises aluminum hydroxide as reinforcing filler and in that a total carbon black proportion of all carbon blacks in the rubber mixture is less than 5 phr;
- and
- wherein the middle functional layer (4) is in the form of a carcass (13) comprising a cord fabric (7) embedded in at least one ply (5) of an elastomer matrix (9).
A process for producing an air spring bellows (100) having a multi-layered main body (8) having elastic properties, wherein the main body (8) comprises an inner elastomer layer (3), a middle functional layer (4) and an outer elastomer layer (6), wherein the inner elastomer layer (3), the functional layer (4) and the outer elastomer layer (6) are produced from an identical rubber mixture, in that aluminum hydroxide is added to the rubber mixture as reinforcing filler and in that a total carbon black proportion of all carbon blacks in the rubber mixture is less than 5 phr.
Dependencies are inferred from the claim text.