DE1015218B - Process for the production of toppings - Google Patents

Description

Process for the production of coverings The production of coverings, such as B. floor, wall or table coverings are done in a variety of ways. Except - the well-known production of coverings. linseed oil is in the last Years the production of coverings made of thermoplastics and rubber has grown strongly. These coverings are mostly single-layered by rolling and calendering webs or made in several layers by doubling. Most of the time these rubbers are on the running side printed in some form or otherwise grained, so that it is a dem Result in an eye-pleasing image.

It is particularly advantageous if the grain, marbling or the jasper pattern is not only present on the surface, but over the whole Covering thickness, but at least over a certain layer thickness, is distributed. One achieves This is generally done by preplasticizing differently colored masses on rollers. After the presentation, the material is in the form of puppets and small pieces taken from the rollers and placed on the calender. Because the abandoned lots are colored differently, the peeled sheet is given a colorful pattern. In other Cases, the pre-gelled material is peeled off in the form of webs and shredded.

The different colored granules are now mixed and after a suitable one Preheating on the calender. A pattern of the web is also obtained here. It has also been proposed to have several strips on separate rolling mills pull out and then pressed together by rolling together. These Working methods have several disadvantages. First, they are very cumbersome and require a lot of work and extensive machinery, and secondly it is not easy to achieve a uniform marbling on long strips.

It has been found that a continuous jaspé pattern or a other coverings with marbling or grain in the simplest way Manage a preplasticized doll on a multi-roll calender, if you have one or more prepared thin foils, ribbons or cords at the same time with colors that differ from the basic color of the doll in any nip with can run, where they are mixed with the rest of the covering mass. You roll z. B. a thin sheet of white color on the calender. This operation requires Little effort and care with regard to the appearance and the plasticization the slide. In a second step, one is put on a Mchrwalzehkalender Pre-plasticized doll of any size, different from the color of the prepared foil Color and lets the prepared film run in, expediently in the second nip. The doll rotating in the nip picks them up and distributes them so that in the entire mass a completely equal, moderate pattern is achieved. In the third Roll chipping still results in a certain refinement of the grain.

An extensive variation in the grain is possible because mani colored the film intended for shrinking stronger or weaker or others Chooses colors or allows several different colored foils to run in at the same time. This Process can be done with any thermoplastic material that is on rollers and calenders can be processed.

The masses can also be filled in bulk with fillers. the so obtained. Lanes can be matched with other lanes that are grained or plain are to be doubled to achieve a desired strength, their manufacture is not possible in one operation on the calender. The described way of working has several advantages.

You get a very nice pattern of a continuous and absolute uniform marbling, which can be designed very variably. It is Z. B. possible during production by changing the colors of the accompanying foils and type of grain to change without interrupting the running of the web on the calender. It is also possible to produce marbled flooring with a smaller machine park. The entire rolling process requires little work because, as already mentioned above, the production of the colored prefilm requires little care and the shrinking the film in the roll gap can be fully mechanized.

Example Plasticization is carried out on one or more mixing mills a mixture of 75 parts polyvinyl chloride, 25 parts of polyvinyl chloride copolymer, 32 parts of dioctyl phthalate, 2 parts of bis-stearate, 26 parts of chalk, 3 parts of chromium oxide green and 0.23 part iron oxide yellow continuously at 1500, gives the well-gelled Mass on a three- or four-roll calender and pulls it into a web from there 0.5 to 1 mm thick. At the same time, a prepared 0.2 mm thick film is left enter into the second nip of the calender. The prepared slide has the following Composition: 75 parts polyvinyl chloride, 25 parts mixed polymer (vinyl chloride to Vinylaceta = 60:40), 50 parts of dioctyl phalate, 2 parts of lead stearate and 3 parts Titanium white. Purpose you leave this film before passing through the nip of the the hot calender roll rest on half of its circumference so that it is preheated a little will. In the roller gap, the film is partially distributed over the entire mass, which means a perfectly even marbling is achieved. in the following third, nip of a four-roll calender, it is further refined and the web is deducted. If a thicker surface is desired, several lanes are in on doubled in a known manner.

Claims (1)

PATENT CLAIM Process for the production of coverings with continuous Jaspe pattern or any other marbling or grain by rolling a preplasticized doll on a Meun roller calender, characterized by the Allowing one or more thin films, tapes or cords to run along with von colors that differ from the basic color of the doll. Documents considered. German patent specifications No. 171 111, 205 604.