Enamelled projection screen and method for the manufacturing thereof
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United States of America Patent
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Nov 5, 2002
Issued Date -
N/A
app pub date -
Dec 18, 2000
filing date -
Jun 26, 1998
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Abstract
The enamelled projection screen includes a substrate which is coated with at least one enamel layer which includes a pearlescent pigment and the gloss degree of which is between 1 and 40% on the 60.degree. measuring head according to the ISO 2813 standard. This screen is manufactured by applying an enamel slurry on a substrate and burning it in at a high temperature, whereby, before the burning-in takes place, a quantity, preferably between 0.5 and 50 weight % in respect to the quantity of enamel in dry form, of a pearlescent pigment is added to the enamel slurry. The contents of pearlescent pigment are chosen sufficiently high and the temperature of burning-in sufficiently low in order to obtain the aforementioned gloss degree.
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