Appeal No. 2004-1717
Application No. 09/647,129
APPEALED SUBJECT MATTER
The subject matter on appeal is directed to a method of
producing wear-resistant laminate flooring materials. Further
details of the appealed subject matter are recited in
representative claims 1 and 5, which are reproduced below:
1. A method of impregnating paper used for the production
of wear-resistant laminate flooring material comprising:
a) taking paper;
b) damping and impregnating said paper with an amino resin
by the use of metering rollers; and
c) additionally spraying onto said damped wet paper an
additional layer of amino resin in a dispersion containing an
abrasive substance and a flow-promoting agent; and
wherein the final area density relative to the dry mass of
raw paper amounts to 100% to 250%; and wherein the dispersion
comprises 100 parts of the amino resin, 20 to 95 parts of the
abrasive substance , 0.5 to 2.5 parts of a silane adhesion
promoter, 5 to 25 parts of a flow-promoting agent, 0.1 to 0.4
parts of a wetting agent, 0.05 to 0.4 parts of a separating agent
and of an amino resin hardener.
5. A method of impregnating paper used for the production
of wear-resistant laminate flooring material comprising:
a) taking paper;
b) damping and impregnating said paper with an amino resin
by the use of metering rollers; and
c) additionally spraying onto said damped wet paper an
additional layer of amino resin in a dispersion containing an
abrasive substance;
wherein the final area density relative to the dry mass of
raw paper amounts to 100% to 250%; and wherein the abrasive
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