Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1987-07-30
1989-11-07
Lawrence, Evan
Coating processes
With post-treatment of coating or coating material
Heating or drying
427386, 427393, 4273935, 427403, 4274071, 427408, 4274121, B05D 300, B05D 704, B05D 706, B05D 724
Patent
active
048791431
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a process for the production of a floor covering, especially of a covering for private and public areas. It is meant for floors in living areas, kitchens, bathrooms, but also for terraces and balconies. In the public sector, it is meant for industrial-, storage- and commercial spaces, but also for doctors' offices, hospitals, schools and sports areas.
A process for the production of such floor coverings is known, wherein at first granulated material and a hardenable plastic binding means are mixed to a paste-like mass. Subsequently this mass is evenly spread over a surface and smoothed. After the hardening of this mass, a floor results which, due to the structure of its surface, is practically maintenance-free. In this known process, the granulated material consists of quartz gravel with a diameter of several millimeters.
Since this known type of floor completely covers and seals the substrate to which it is applied, it is required that the floor covering be applied only after the substrate has dried out completely. However, during construction it often happens that floors are laid out before the substrate, for instance plaster, is sufficiently dry. Sometimes, in order to save time, construction cannot be postponed for the length of time required for sufficient drying. When the known covering is spread on such a substrate which has not been dried sufficiently, blisters and cracks will shortly appear from evaporating moisture which causes the initially even and smooth surface of the floor covering to be damaged.
Among others, the invention has the object to improve the known process for the production of such a floor covering, so that it will become possible to apply the covering, even when the substrate has not sufficiently dried out.
Furthermore, it is desirable to use the known process also in cases of floating applications, whereby the covering is not bonded to the substrate, but is actually completely separated therefrom, due to the application of a separating layer.
SUMMARY OF THE INVENTION
In order to solve this problem, the known process is developed according to the invention in such a manner that the granule size in the granulated material and/or the proportion of the granulated material and the binder in the mixture are so selected that, after the mass is applied and smoothed, neighboring grains of the granulated material contact each other only in isolated points and the coated surface of the substrate is not wetted by the binder in a proportion of 40 to 70%, preferably of 50%, due to the hollow spaces existing between the individual grains of the granulated material wetted by the binder.
DETAILED DESCRIPTION
By using a two-component reaction resin as a binder for the mixture, namely a solvent-free two-component epoxy resin or polyurethane resin (solvent-containing or solvent-free) with a composition of various hardener systems, it has become possible, through precise determination of the proportion of binder with respect to the granule size of the granulated material, to achieve a connection to the substrate through resin dripping down the granules at the time of reaction. However, these resin drippings are not sufficient for the complete wetting of the substrate, whereby a bond of the covering to the substrate results which is vapor-permeable. By applying the teaching of the invention, the aforementioned occurence of blisters, and the separation of the covering from the substrate connected therewith has been shown no longer to be a problem.
By applying the invention to the production of a floating covering, wherein the substrate is covered at first with a separation layer, which for instance can be made of plastic foil, plastic fleece, paper- or cardboard layers, the process does not depend any more on the state of the substrate to be covered. The covering can be applied without the heretofore required preliminary operations, which for instance were necessary when the substrate was partially cracked and did not present a solid surface
REFERENCES:
English translation of German OS No. 1,927,576, PTO 88-2702, Washington, D.C., U.S. Patent and Trademark Office, Aug. 1988.
English translation of German Utility Model Patent No. 7,328,721, PTO 88-2703, Washington, D.C., U.S. Patent and Trademark Office, Sep. 1988.
English translation of excerpts, German OS No. 1,504,261, Washington, D.C., U.S. Patent and Trademark Office, Dec. 1987.
Dubno Herbert
Lawrence Evan
Rang KG Haus Moderner Fussboden
LandOfFree
Process for the production of floor covering does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the production of floor covering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of floor covering will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-82876