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US 4,353,296 AGranted
Use of anisotropic rubber for venta-nip rolls
AssigneeBeloit Corporation
InventorAlbert W. Beucker
Life of this patent
Estimating the term…
Abstract
A roll having an elastomeric cover for engaging another roll to form a couple, said cover having circumferential grooves and comprising an anisotropic material which has a greater modulus of elasticity as measured in the transverse direction than in the circumferential direction to prevent closing of the grooves by transverse flow of rubber in the nip area.
Claims9
A roll of the type used in conjunction with a backing means to form a nip through which a web passes, said roll comprising:
- a resilient outer elastomeric cover having a plurality of alternating circumferentially extending ribs and grooves,
- said cover being characterized by having anistropic properties including a modulus of elasticity as measured in directions transverse to the rotational direction of the roll which is substantially greater than the modulus of elasticity measured in directions circumferentially of the roll.
Dependencies are inferred from the claim text.