Abstract: The invention refers to a method of obtaining a pore-sealed surface having a desired finished structure on a lacquered sheet or web material, preferably a lacquered slab or board of a material containing wood fibres (lignocellulose) such as board or particle board material. According to the invention the slab or board is coated with a wet or powdery, clear or pigmented lacquer material. The slab or board so coated is dried and/or cured and the slab or board thereafter subjected to a compression operation under high mechanical pressure during a short time so that flowing of the lacquer material and/or sheet material takes place and a surface structure have good evenness and tightness is obtained. The invention also comprises a slab or board of finished structure manufactured according to the invention.

Abstract: A body-support device for use as a mattress or cushion for hospital beds comprises an inner core (10) of soft, resilient plastics material having predominantly open cells, said core having two mutually opposite major surfaces (10a,10b) connected together by side surfaces (10c). Each major surface (10a,10b) is covered with a thin layer (11,12) of soft, resilient plastics material having predominantly closed cells, said thin layers (11,12) also covering at least two side surfaces of said inner core. The surfaces of the thin layers (11,12) remote from the core (10) are covered with a plastics foil (14,15). The uncovered side surfaces of the inner core serve to enable air to pass into and out of the inner core. The plastics foil provides the body-support device with a surface which can readily be kept clean. The thin layers (11,12) afford a better and stronger bonding of the plastics foil to the body-support device.