Ground cover and method for its production
A technology for ground coverings and particles, which can be applied to floors, building structures, other household appliances, etc., and can solve problems such as high dimensional stability requirements and limited selection of particulate materials.
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example 1
[0021] The floor covering consists of a plate-shaped base made of elastomeric material; in this embodiment, it is made of styrene-butadiene rubber (SBR). The matrix is provided with transparent particles of thermoplastic elastomer; in this example, it is made of styrene-butadiene block copolymer (SBS). To produce the pellets, firstly, profiles are produced by means of extrusion as semi-finished products, which are then cut to the correct size. This results in particles of a defined profile with a defined length. These particles were exposed to a source of ionizing gamma radiation at a radiation dose of 150 kGy, resulting in crosslinking of the thermoplastic elastomer. The particles crosslinked in this way were added to the elastomeric material, which was then mixed with the particles, formed into a sheet by means of a calender, and subjected to heat treatment at 160° C. to vulcanize the SBR. During the mixing process, a high energy input of the mixture in the range of 4 kW...
example 2
[0023]After the mixing step, the floor covering described in example 1 was shaped into sheets with a double thickness and subsequently split into two sheets with the same thickness by means of a circular saw blade. After the ground covering has been laid, the surface produced by the splitting forms the side off the ground. Due to the splitting, the particles are clearly present on the newly created surface; this is particularly advantageous when the particles at least partially cover the surface of the unsplit sheet, since the base material overflows during the calendering process. The translucent effect of the particles is very noticeable, especially when using transparent particles. This effect can be improved even further by grinding the two back sides of the floor covering.
[0024] A floor covering system comprising a floor covering according to the invention with transparent particles and a translucent adhesive, preferably an acrylate adhesive, especially a cyanoacrylat...
Embodiment 3
[0026] The floor covering consists of a plate-shaped base made of elastomeric material; in this embodiment, it is made of nitrile rubber (NBR). The matrix is provided with particles of different colors made of thermoplastic elastomer; in this example it is made of styrene-butadiene block copolymer (SBS). To manufacture the granules, first, a flat layer is made into a semi-finished product, which is then chopped to form granules. These particles were exposed to a source of ionizing gamma radiation at a radiation dose of 150 kGy, resulting in crosslinking of the thermoplastic elastomer. To produce the matrix, elastomeric materials are mixed and formed into sheets using a calender. The particles are scattered onto the sheet thus formed, and the sheet with the particles dispersed thereon is subsequently vulcanized. During the dispersion step, advantageously, relatively few particles are required to obtain an attractive surface. Subsequently, the sheet was subjected to heat tr...
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