초록 ▼

Blocks or panels 10, more especially of porous or cellular structure, are faced with a fabric or web inorganic fibres, preferably in the form of glass fibre tissue, bonded to the block or panel by a composition 14 of thermosetting condensation polymer and gypsum, preferably in a ratio between 1:1.6

Blocks or panels 10, more especially of porous or cellular structure, are faced with a fabric or web inorganic fibres, preferably in the form of glass fibre tissue, bonded to the block or panel by a composition 14 of thermosetting condensation polymer and gypsum, preferably in a ratio between 1:1.6 and 1:4.0. The amount of the composition is preferably such as to provide a film of minimal thickness over the surface of the fabric or web, corresponding to a glass: resin plus gypsum proportion of 8 to 25%. Such coatings when applied to foamed plastics, chip-board or glass fibre panels provide boards suitable for ceilings or partitions and having ample strength and flame resistance. The blocks or panels may be made continuously by applying fibrous tissues, impregnated with a fluid mixture of plaster and resin by roller spreaders, to the face of panel elements supported between release sheets, for example of polypropylene. Pressure may be applied and maintained, if desired, until the fluid mixture has set.

대표청구항 ▼

A building or constructional component comprising a substrate of substantially rigid material having on at least one surface a facing composed of a fabric or web of inorganic fibres and a set composition of thermosetting condensation resin and gypsum, the composition penetrating the fabric or web an

A building or constructional component comprising a substrate of substantially rigid material having on at least one surface a facing composed of a fabric or web of inorganic fibres and a set composition of thermosetting condensation resin and gypsum, the composition penetrating the fabric or web and bonding it to the surface of the substrate wherein the amount of said composition is sufficient only to form a continuous film over the surface of the fabric or web.