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US 4,163,818 AGranted
Anti-slip serving tray and the method of manufacturing thereof
OwnerPierre Wernliinventor
Life of this patent
Estimating the term…
Abstract
An anti-slip tray and the method of manufacturing it. Sheets of paper impregnated with melamine resin and paper sheets impregnated with phenolic resin are stacked in a pile. A loosely woven cloth covers the pile. Its upper face or major surface is covered with a layer of porous PVC which can be decorative. The cloth has a plurality of perforations. The cloth and pile are molded under heat and pressure.
Claims3
A method of manufacturing an anti-slip laminate suitable for making a tray, comprising:
- stacking sheets of paper impregnated with melamine sheets alternately with sheets of paper impregnated with phenolic resins, the last mentioned sheets having a greater density of impregnated resins than the first-mentioned sheets, placing on the stack a loosely woven cloth covered on its upper face with a layer of porous PVC, said cloth having from eight to ten perforations per square centimeter, the perforations having a diameter of 0.1 to 0.2 mm. pressing the stack in a tray mold with said cloth thereon under a temperature of about 140.degree. C. and at a pressure of about 60 kg./cm..sup.2 for about ten minutes, and removing a molded laminate from said mold.
Dependencies are inferred from the claim text.