DE1024917B - Artificial leather and process for its manufacture - Google Patents

Description

Artificial leather and process for its manufacture The invention relates on a new type of knuckle of high elasticity and deformability, it, This must be done on a textile fiber carrier, preferably a textile fabric or knitted fabrics, is sieved.

Synthetic leather with a textile fiber-containing carrier are known from s, nch. she However, they have a very low ductility and deformability, as they do known artificial leathers create an intimate connection between the entire support surface and the Kumsflie: d, covering layer consists, with the voids between the individual. Threads of the knitted fabric or fabric with a more or less filling and their side walls are provided interconnecting plastic compound.

The extensibility and deformability of the artificial leather, according to the invention is achieved in that the synthetic leather cover sheet with the textile fiber-containing Carriers only on individual ones, however, preferably evenly over the entire surface distributed places is connected.

This is the new kind of point-wise connection between girders and synthetic leather top layer, which in no way affects the extensibility of the finished Impaired artificial leather can be achieved, for example, that of the textile-fiber-containing carrier only lies in its surface, more or less with the underside of the synthetic leather top layer are connected.

For the production of such highly elastic and highly deformable The invention proposes various methods for artificial leather.

For example, the textile backing can be used in an unsuitable condition so pressed onto a still gelatinous thermoplastic plastic-oil that from the surface of the textile carrier layer (woven or knitted fabric) convex protruding thread parts in which an approximately pasty plasticity exhibiting Underside of the still gelatinous plastic body that is pressed into it.

However, one is in no way dependent on the connection between them Synthetic leather top layer and textile backing only on those in the outermost surface of the textile fiber-containing carrier is carried out convexly extending thread parts; one can rather - in particular: e when the textile carrier does not have a point-wise, e # n connection between the two layers has a favorable natural structure - the size and density of the connection points between imitation leather, ecks.chncht and carrier as well arbitrarily, choose, for example, by first touching the surface of the support a thin plastic film is placed on the carrier layer in its entirety or on it facing side - if necessary, using chemical and / or physical safety Means - as is or is placed in such a state, that is, when Passing the carrier layer covered with the plastic film between rollers, of which at least one warmer-like surface structure with the individual connection points Corresponding projections or the like. Has, at these points of the carrier below more or less strong pressure is connected to the plastic film.

Everything. physical means come primarily from exposure to heat in question, through which the side of the plastic film facing the carrier is plasticized or at least superficially melted. This plasticizing or melting can thereby be limited to the desired individual connection points be that the one ware upper surface aufweilsende roller or rollers is heated or will.

To remove any remaining disturbing impressions of the Nipple roller can be connected to the carrier layer in this way, more or less thin plastic film one or more times in a known manner Plastic coated and then embossed and profiled in any desired way will.

The textile fabric serving as a carrier layer can, for example consist of strongly crimped plastic threads, which have a high elasticity.

Claims (1)

PATENT CLAIMS: 1. Synthetic leather with textile fiber content: igem carrier, characterized in that the plastic layer is connected to the textile fiber-containing carrier only at individual points, but preferably evenly distributed over the entire surface. 2. Synthetic leather according to claim 1, characterized in that the carrier consists of a fabric made of strongly crimped plastic threads. 3. Artificial leather according to claim 1 or 2, characterized gekennizei: chnet, since @ ß of the textile fiber-containing carrier, for. B. tissue or G.eivirke, only in each case individual, lying on its surface, more or less convexly extending thread parts with the underside of the plastic: chi.cht are connected. 4. A method for producing an artificial leather according to one of claims 1 to 3, characterized in that the textile carrier: ch, iobt is pressed in the unstretched state onto a still gelatinous plastic film, the from the .Oberfläche the textile carrier layer (G, aveb @ e or knitted fabric) convex protruding thread parts are connected to the underside of the still gelatinous plastic film. 5. A method for producing artificial leather nasch claim 1 to 3, characterized in that a thin, as Zwis chenscbicb.t serving Kunststoffoliie is placed on the surface of the textile fiberhadtigen carrier before the application of the artificial leather cover, the side or sides facing the carrier is such that when the carrier covered with the plastic film is passed through between rollers, at least one of which has a wart-like surface structure with projections or the like corresponding to the individual connection points, the carrier is connected to the plastic film at these points. 6. A method for manufacturing, -ti of artificial leather according to claim 5, characterized gekennzeiclinet that the plastic film connected to the carrier is coated one or more times with plastic in a manner known per se and, if necessary, is profiled ans.chl: i ° ßend. Considered publications: German Patent Nos. 926 068, 619 128; French patents \ 7r. 1051 572, 792-114, U.S. Patent No. 2,704,730.