Pneumatiques, Caoutchouc Manufacture Et Plastiques Kleber-colombes

Alain Bonnefon

Jack Benard

Michel Maffre

Alain Coupard

A reinforced composite plastic material has a matrix of thermoplastic material in which is dispersed at least 5% by weight of a polyethylene having a very high molecular weight. The reinforcing polymer is in the form of fine particles which, in large proportion, are drawn out in the form of elongated fibrils which impart considerable strength to the resulting composite plastic material.

Reinforced plastic material and a process for the production thereof

A flexible, homogeneous rubbery product comprising a matrix of a rubber selected from the group consisting of natural and synthetic elastomer in which there is uniformly dispersed at least 5% by weight based on the weight of the elastomer of a crystalline polyolefin whose molecular weight is equal to or greater than 500,000. A substantial proportion of the polyolefin is in the condition or form of fine particles which are drawn out in the form of elongated fibrils having a diameter smaller than 5 microns. This product exhibits a very high resistance to elongation in at least one direction.

Production of polyolefin-reinforced rubber products

A transmission belt which has a portion possessing tensile strength that consists solely of a thin, flat strip (sheathing) and that contains no reinforcing cord or cable. This strip comprises at least two thin, superposed layers bonded together and consisting of a flexible elastomer or plastomer matrix reinforced with irregular, elongated fibrils dispersed in the matrix with a dominant orientation in the longitudinal direction of the strip such that the strip has a tensile strength of at least 20 kg/cm.sup.2 with 1% elongation.

Growing community of inventors

Epinay sur Seine, France

Alain Bonnefon