Abstract: The present invention relates to a basic composition for the manufacture of a product in sheet form, obtained in particular by the wet method, of the type comprising a mixture of a polymer powder of given granulometry and of fibers, characterized in that it comprises a preferably intimate mixture of:a) at least one elastomer powder, of granulometry less than about 500 .mu.m, called elastomer fine dust, andb) fibers of length less than about 10 mm, selected from the group composed of natural fibers, inorganic fibers and mixtures thereof.

Abstract: The invention relates to a sheet obtained by a papermaking process and usable as a product that can be substituted for conventional products referred to as impregnated glass covering products. The sheet essentially contains cellulose fibers, non-cellulose fibers, a thermoplastic powder of specified grain size, and a binder. It is optionally covered with a layer of plasticizer for the thermoplastic powder. Its resistance to traction-delamination increases with grain size. It is applicable as a backing, in particular to floor or wall coverings.

Abstract: The process for producing a tridimensional piece from an aqueous suspension containing at least a thermoplastic resin and reinforcing fibers, comprises the following steps:(a) the elements of the suspension are wet-molded into a preform in a mold, said preform having, in the three dimensions, the general outline of the final piece;(b) the preform is then at least partly de-watered;(c) then the preform is pre-heated to a temperature higher than the melting point of the thermoplastic resin;(d) the preform is then molded under pressure into its final shape in a press heated to a temperature below the melting point of the thermoplastic resin.

Abstract: The invention relates to a paper sheet obtained essentially from (parts by dry weight)______________________________________ Fibers (cellulosic and 20 to 40 "basic mixture" non-cellulosic) Fillers 80 to 60 Latex 40 to 105 ______________________________________in particular by a process of double flocculation, which has a very high resistance to delamination. The invention is applicable to floor and wall coverings.

Abstract: The invention relates to a treatment process for improving the dimensional stability of a fibrous sheet obtained by papermaking process, and of which at least part of the fibers are cellulosic fibers, said process consisting in impregnating the sheet with a chemical composition containing at least one wetting agent and one binder.

Abstract: 100 parts by dry weight of latex, approximately, are used for about 45 to 140 parts by dry weight of fibrous mixture.Manufacture particularly by double flocculation (addition of each flocculating agent partly before and partly after the addition of latex).Very good properties, particularly breakage strength and delamination resistance.