method of construction of dishes - showers, bathtubs, wash basins and turkish in the plastic material, and products obtained

摘要

This method for forming shower-trays, bathtubs, wash-basins and floor toilets of plastics material consists of joining together two thermoformed plastics shells defining the thickness of said articles, by means of interposing between them polyurethane foam injected preferably with the mould open to reduce the density of the expanded material when consolidated, said shells being structurally different from each other and being conjugate with impressions present in the closure mould, which on being completely closed defines the required thicknesses. The product obtained by the aforesaid method, and consisting of shower-trays, bathtubs, wash-basins and floor toilets, has a stratified composition comprising an "exposed" surface in the form of a thermoformed sheet of suitable thickness, preferably of acrylic material, a layer or internal thickness of low density rigid expanded polyurethane injected and polymerized directly against said sheet, and finally an inner surface of small thickness, said inner surface being subjected mainly to traction stresses. IMAGE