DE2118705A1 - Plastic track for ice stock sport, curling or the like and a method for producing the same - Google Patents

Description

Anton Schiestl in Wiesing, Tyrol, (Austria)

Plastic sheeting '

for ice stock sport, curling or the like. and method of manufacture the same

Me present invention relates to a plastic track for ice stock sport, curling or the like. with a Surface made of hardened thermosets, possibly containing additives, and processes for their production.

In order to be able to practice the popular winter sports of ice stock sport and curling even in warmer seasons, various paths have been proposed. These sports are usually made on natural lanes as well Exercised from artificial ice, with the good gliding ability of bodies, in sports the ice sticks or the like., On the ice

109848/0197 15 476 15 / according to

Requirement is.

One has smooth surfaces from "special" for such tracks Well-sliding plastics proposed, with additives to the plastic, by superficially applied Lubricant an improvement was attempted.

An improvement of such tracks resulted from the suggestion of not smooth, but depressions To use surfaces, these indentations achieved by an applied mineral granular material will. These grains are sanded and, if necessary, coated with a plastic layer that glides well.

However, such tracks have the disadvantage that because of different grain sizes and grain shapes, the proportion of the raised surface over the entire web is not is completely the same. In addition, only a very thin plastic layer can be applied, which on the one hand a Wear and tear soon leads to irregularities in the web, on the other hand sharp edges lead to soiling, as a result of which further inequalities arise.

The disadvantages mentioned are alleviated by an inventive Plastic sheet avoided. It is characterized by the fact that the surface has depressions from 1 to 5 mm deep which have rounded corners and edges, wherein the raised part of the surface forms a flat surface and a proportion between 25 and 40% of the total surface area. Dirt can easily build up in the depressions collect without being held on sharp edges or corners, which means that the web is self-cleaning when in use and easy removal of the collected dirt is possible for maintenance.

It is preferred that the recesses have the shape of

109848/0197

elongated hexagons, or rhombuses or ellipses, the length of the depressions about 10 mm, the width is about 5 - 6 mm. The alignment of the depressions in the longitudinal direction has proven to be advantageous here.

It is also advantageous if the raised part of the Surface between the depressions has a web width of at least 1 mm.

In Figs. 1 to 5, the shapes of the depressions are shown in plan view of the web. In Fig. 4 is a transverse ■ cut part of the spell drawn.

Fig. 1 shows an elongated hexagon with rounded corners as the shape of the recess. 2 also shows a rhombus with rounded corners. In Fig. 3, the shape of the recess corresponds approximately to the shape of an ellipse. In Fig. 4 recognizes one in cross-section that the depressions do not form any edges even with the flat surface.

However, the configurations of the surface shown are intended only as examples, and the invention is also intended include other analog interfaces. The surface could also be designed so that the raised parts of the surface Hexagon, diamond or elliptical shape, while the depressions have a coherent network structure. The advantage of easier cleaning is offset by poorer sliding.

In order to produce a plastic web according to the invention, the procedure can be such that the not yet crosslinked Duromers distributed on a solid substrate and with the help of a heated roller the crosslinking and thus the hardening ' is initiated, with the desired parts of the roller corresponding to the depressions of the finished web Surface shape is obtained. A ^, ls subsoil can be concrete

109848/0197

or other substances made with inorganic binders can also be used with organic binders such as bitumen or plastics. Here can open The coating is applied to a relatively uneven surface which compensates for any unevenness. It is also possible to produce a plastic sheet so that Web parts by pressing, preferably hot pressing, with one that is planar on one side and that has elevations on the other side Mold are produced, whereupon these are glued to a flat surface. However, this is the case An appropriately carefully prepared substrate is necessary so that there is no between this and the prefabricated, flat and stiff web parts cavities occur or if the web does not have elevations, causing an uncontrolled Sliding of the ice sticks od.dglo occurs during use.

The tracks according to the invention have a particular advantage in that they are also suitable for the game of curling, in which a desired sliding of the "ovaries" by prior brushing of the track surface with a broom is part of the game. This can also be imitated with a plastic sheet by applying lubricant to the sheet, which then collects in the depressions , is brought to the raised parts of the surface by the sweeping when there is play, whereby you can achieve better sliding.

109848/0197

Claims (8)

P a t e η t a η s test Plastic track for ice stock sport, curling or the like. with a surface made of hardened office cores, possibly containing additives, characterized in that the surface has depressions 1 to 5 mm deep, which have rounded corners and edges, the raised part of the surface forming a flat surface and a portion between 25 and 40 % of the total surface. 2. Plastic sheet according to claim 1, characterized in that that the wells are hexagonal with rounded corners have, wherein the hexagons are elongated with a length of about 10 mm and a width of about 5 to 6 mm. 3. Plastic sheet according to claim 1, characterized in that that the wells have a diamond shape with rounded corners, the diamonds are about 10 mm long and about 5 to 6 mm wide. 4 .. plastic sheet according to claim 1, characterized in that that the wells have an elliptical shape with a length of about 10 mm and a width of 5 to 6 mm. 5. Plastic sheet according to one of claims 2 to 4 »characterized in that the elongated depressions in the longitudinal direction the spell are aligned. 6. Plastic sheet according to one or more of claims 1. 109848/0197 to 5, characterized in that the raised part of the surface between the depressions has a web width of has at least 1 ram. 7 »A method for producing a plastic sheet according to claim 1, characterized in that the not yet crosslinked Duromers distributed on a solid surface and With the help of a heated roller, the crosslinking and thus the hardening is initiated, with raised, the depressions the finished web corresponding parts of the roller, the desired surface shape is obtained. 8. A method for producing a plastic sheet according to claim 1, characterized in that web parts duroh pressing, preferably hot pressing, plan with one on one side and on the other Side elevations having compression mold are produced, whereupon they are glued to a flat surface. 1098 * 8/0197