Patent ID: 11952308
Assignee: MATERIALES AVANZADOS SPA
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  A | IPC C

Claim 0:
1. A process for the transformation of an industrial soda-lime-type base glass plate into a glazed material with antimicrobial properties and personalized color, comprising the following stages:
stage 1 comprising:
a) selecting a glass plate face to use, detecting through a UV lamp the face that has been in contact with tin in its industrial stage;
b) cleaning an uncontaminated face with a water-free solvent;
stage 2 comprising:
a) applying a microglass solution dissolved in ethanol to the cleaned surface of the glass plate via atomization at a pressure no greater than 3.51 kg/cm2 and allowing to dry to form a first colored layer,
b) forming a second colored layer by applying dry colored microglass through a sieve;
c) applying copper nanoparticles dissolved in an aqueous nitrocellulosic adhesive solution via atomization at a pressure no greater than 3.51 kg/cm2 thereby temporarily fixing the microglass layers and the copper nanoparticles to the glass plate face prior to their fixation by firing to obtain a prepared glass plate;
stage 3 comprising:
introducing the prepared glass plate from stage 2 into an electric type furnace with superior heating resistances on a refractory ceramic fiber base to heat the glass plate surface at temperature ranges of 800° C.-900° C., and stabilizing said temperature range for a time not exceeding 40 minutes to obtain a glazed surface;
stage 4 comprising:
a) cooling the glazed surface in 3 cycles comprising:
cycle 1: lowering the temperature rapidly to a temperature not less than 560° C.,
cycle 2: stabilizing the temperature at 560° C. for a period of time between 30 and 120 minutes,
cycle 3: carrying out controlled cooling from 560° C. to room temperature, for a time at least 3 times longer than the time that was used to heat the glass plate during stage 3 thereby obtaining a mechanically stable glazed material without internal stresses,
stage 5 comprising:
cutting the stable glazed material obtained from stage 4 to size, polishing edges, and machining as required.