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US 4,674,622 AGranted
Conveyor belt
AssigneeBridgestone Corporation
InventorsTadashi Utsunomiya, Yasuhiko Matsumuro, Keishi Sato, Yoshihide Fukahori, Masao Ogawa
Life of this patent
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Abstract
A conveyor belt having a cover layer is disclosed and a core layer. An adhesion-proofing agent is contained in the cover layer. The conveyor belt further has a migration-proofing layer provided between the cover layer and the core layer for preventing migration of the adhesion-proofing agent in the cover layer to the core layer.
Claims28
A conveyor belt suitable for conveying tacky materials, comprising:
- a cover layer having at least one layer containing an ester of an aliphatic carboxylic acid and an aliphatic alcohol as an adhesion-proofing agent;
- a core layer;
- and
- a migration-proofing layer interposed between said cover layer and said core layer for preventing migration of said adhesion-proofing agent to said core layer so that said adhesion-proofing agent prevents adhesion of said tacky materials to said cover layer.
1 more element
A conveyor belt suitable for conveying tacky materials, comprising:
- a cover layer made of rubber or plastic material and having at least one layer containing an ester of an aliphatic carboxylic acid and an aliphatic alcohol as an adhesion-proofing agent;
- a core layer made of rubber with reinforcing material embedded therein;
- and
- a migration-proofing layer, interposed between said cover layer and said core layer, and made of fiber, plastic, or rubber material or the combination thereof, having a higher polarity than the material forming said cover layer for preventing migration of said adhesion-proofing agent to said core layer so that said adhesion-proofing agent prevents adhesion of tack materials to said cover layer.
1 more element
Dependencies are inferred from the claim text.