Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F15/00—Flooring
  • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors

Definitions

• the invention relates to a cork flooring.
• Cork floor coverings are widely used, especially in living rooms. They are elastic, heat-insulating and pleasant as a natural substance.
• veneered, multi-layered floor coverings are used.
• a decorative cork veneer is applied to a solid cork covering.
• the abrasion resistance of the cork veneer is worse than the solid cork coverings, but can be improved by sealing.
• Cork floor coverings are sold in the form of tiles that are glued or cork parquet flooring that is laid floating or in the form of click systems.
• Floor coverings consisting of a layer of polyurethane resin, in which particulate material is incorporated and on the surface of which particulate material is interspersed, are used in particular in sports halls and outdoor sports facilities.
• a process for the production of elastic track coverings in which a pourable polyurethane mixture with optionally 20 to 50 wt .-% of inorganic filler having a particle size ⁇ 100 .mu.m and a compatible with the polyurethane matrix additive is poured onto the substrate.
• all resilient or elastic solids can be used, eg crushed rubber or cork pieces. Preference is given to using rough grains with a particle size of up to 20 mm of pre-hardened polyurethane elastomer, which bind to the polyurethane matrix by adhesion.
• the floor covering material can also be produced in the form of prefabricated webs which are stored and transported in roll form.
• the invention has for its object to provide a cork flooring, which is seamless, waterproof and impact-resistant and has a good recovery behavior.
• a floor covering according to the invention thus consists of a layer of polyurethane resin, is incorporated in the particulate material and on the surface of particulate material is interspersed.
• the incorporated and scattered particulate matter is cork flour or granules, which is also referred to as cork meal.
• Reinforcing fibers are incorporated in the polyurethane layer.
• the cork flooring according to the invention is very impact resistant. Due to its extraordinary resilience the soil can withstand point loads.
• a layer of cork powder mixed polyurethane resin is poured onto a substrate and applied to the desired thickness until the substrate is completely covered.
• Cork flour or cork granules are sprinkled on the polyurethane layer (about 5 liters / square meter), until at some point of the soil something of the polyurethane resin layer can still be seen.
• the excess cork powder is expediently taken up or removed from the surface. For this, e.g. simply a broom or a vacuum cleaner or the like can be used.
• the removed material is pure, clean cork material and can be reused for the next flooring.
• the polyurethane resin is preferably unfilled and a two-component resin.
• the cork powder mixed with the polyurethane resin gives the carrier material and thus also the resulting coating the properties of thermal insulation, sound insulation, hydrophobicity, etc.
• the color appearance is determined by the cork material present in the polyurethane.
• Cork is a renewable and sustainable resource.
• a product can be produced that consists of 80% natural resources and is recyclable.
• the cork flooring can be applied in the form of a liquid floor coating for living rooms, clinics, schools, etc. However, it can also be made as a laying material similar to a carpet or plastic floor (made of polyvinyl chloride, for example) and then quickly processed by the publisher. Alternatively, the cork flooring can also be produced as a sheet material and used, for example, for lining residential or office containers.
• the reinforcing fibers are fibers with thixotropic properties, e.g. Polyolefin fibers or polyethylene fibers, preferably with a length of 0.1 to 4 mm, more preferably with a length of 0.1 to 1.5 mm and even more preferably with a length of 0.4 mm. Due to the polyolefin fibers, the carrier material, i. the coating layer, a crack-bridging property mediated to about 2 mm, so that background structures or changes do not adversely affect. The reinforcing fibers are added at about 1 to 10%.
• the cork powder is expediently incorporated in the polyurethane in a proportion of 30 to 50% by volume, preferably 40% by volume.
• the grain size is advantageously 1 to 10 mm, preferably 2 to 5 mm.
• the floor covering is to have a greater thickness (for example up to about 100 mm)
• at least one further layer of polyurethane resin mixed with cork flour is poured or applied to the floor covering and sprinkled onto the polyurethane layer cork meal. It is only always removed the excess cork material after drying or curing and then applied the next resin layer.
• the surface of the single or multilayer flooring is abraded.
• the structure of the surface of the floor covering is defined. The longer and the finer the sanding, the smoother the surface becomes.
• Commercially available parquet sanding machines can be used here.
• Sanding dust does not have to be completely removed because of the still subsequent processing step, in which the surface of the pad is preferably sealed with an aqueous varnish. The remaining sanding dust combines with this material and fills in the smaller open spots. After evaporation of the water (maximum 24 hours), the flooring can be loaded. Bumps are no longer visible. The cork flooring is impact resistant.

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Cited By (4)

Citations (8)

• 2010
  • 2010-11-24 EP EP10192478A patent/EP2458108A1/fr not_active Withdrawn

Patent Citations (9)

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