Polyurethane coated resilient surface covering having improved fidelity of texture and process of manufacture

Inactive Publication Date: 2003-06-12
TARKETT INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After the foamable, liquid plastic layer is a applied to the substrate, the combination is heated for a period of time and at a temperature suffici

Method used

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  • Polyurethane coated resilient surface covering having improved fidelity of texture and process of manufacture
  • Polyurethane coated resilient surface covering having improved fidelity of texture and process of manufacture
  • Polyurethane coated resilient surface covering having improved fidelity of texture and process of manufacture

Examples

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Embodiment Construction

[0052] The polyurethane is applied in excess with a roll coater. Thereafter an air knife is used to control the exact amount to be laid on the flooring material. In our experiments, we applied 15 micrometers ("um") dry. We used various means to dry the polyurethane, including an air blown oven, microwave oven and an oven combining IR@2.5 .mu.m wavelength with air blowing 3,000 m.sup.3 / h, the exhaust being around 5,000 m.sup.3 / h and this was the most preferred drying method. This oven is available from Glenro in the USA or Olbrich in Germany with IR elements from Krelus in Germany. With an installed power of 250 KW over a length of 2 m, the drying time is 8 seconds and the flooring material surface temperature reaches about 100.degree. C.

[0053] The UV crosslinkable PU can be formulated with or without acrylics, in a solvent or water phase or as an emulsion in a water / alcohol mixture. We prefer the water borne system to minimize fire risks and to protect the environment. The preferred...

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PUM

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Abstract

Mechanically embossed resilient surface coverings having superior textural fidelity are prepared by mechanically embossing a polyurethane coated floorcovering before the polyurethane is cured. The mechanical embossing is conducted when the polyurethane is dry and the underlying plastic layer and the polyurethane are softened by heating. After the mechanical embossing step, the polyurethane is cured using ultraviolet (UV) light. The product can be cooled before or after UV curing. The invention is applicable to a variety of resilient surface covering products including floor and wall coverings which otherwise have a wearlayer which can be softened by heating. This includes surface coverings having the full range of decorative effects available in the art, including surface coverings which also have been, for example, chemically embossed, mechanically embossed, chemically and mechanically embossed or not embossed at all prior to application of the process of the invention.

Description

BACKGROUND OF INVENTION[0001] 1. Field of the Invention[0002] The present invention has to do with mechanically embossed resilient surface coverings. More particularly, the invention relates to resilient floorcovering having a photopolymer coating which is mechanically embossed and has a superior fidelity of texture which has not been achieved in previously known resilient products. In a preferred embodiment, the product is chemically embossed before it is mechanically embossed.[0003] 2. Description of the Related Art[0004] Resilient surface coverings including sheet flooring, tile and wall covering are employed in residential, commercial and institutional applications where decorative effects, durability and ease of installation and maintenance are important considerations. The product can be designed to imitate other materials such as ceramic tile, wood, stone and brick, and straw, linen textiles, cork and the like, or it can be designed with unique combinations of color, particle...

Claims

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Application Information

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IPC IPC(8): B29C35/08B29C44/06B29C59/02D06N3/08D06N7/00E04F13/18E04F15/10
CPCB29C44/06Y10T428/24496B29C2035/0827B29K2075/00B29L2031/722B29L2031/732D06N3/08D06N7/001D06N7/0015E04F13/18E04F15/10Y10T428/24612Y10T428/24512Y10T428/24479B29C59/026
Inventor SIMON, JEAN-YVESDUNG, DAO VIET
Owner TARKETT INC
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