Patent ID: 8997974
Filing Date: 2015-04-07
Classification: B65G

Abstract:
1. Endless conveyor belt for a conveying device ( 18 ), which conveyor belt ( 1 ) comprises a body ( 2 ) that can be deformed transversely between—a flat configuration, at rest, and—a tubular or at least substantially tubular configuration, which body ( 2 ) incorporates in its thickness a plurality of longitudinal reinforcing members ( 6 ) suitable for limiting its ability to stretch longitudinally, and which body ( 2 ) is delimited by two faces: —one top face ( 3 ) designed to receive the product to be conveyed, and—one bottom face ( 4 ) designed to interact with driving and guiding means ( 17 , 29 , 30 , 31 ) constituting said conveying device ( 18 ), said top face ( 3 ) and bottom face ( 4 ) being designed to be oriented respectively toward the inside and the outside of the conveyor belt ( 1 ) in said tubular configuration, characterized in that said body ( 2 ) consists of an upper layer ( 10 ) forming said top face ( 3 ), in which at least a portion of its lower surface is superimposed fixed to a lower layer ( 11 ) forming said bottom body face ( 4 ), in that said two layers ( 10 , 11 ) are made of two different elastomer materials, with said lower layer ( 11 ) made of a first elastomer material the hardness of which is greater than that of the second elastomer material constituting said upper layer ( 10 ) with a coefficient of friction of said top face ( 3 ) being greater than a coefficient of friction of said bottom face ( 4 ), and in that said lower layer ( 11 ) comprises, distributed over the whole of its length, a plurality of softening recesses ( 13 ) each extending over at least a portion of its thickness, in order to reduce its resistance to the longitudinal deformations in order to reduce the bending resistance of said conveyor belt ( 1 ) in its tubular configuration.