Abstract:
Web (10), such as wall and ceiling covering materials having a pronounced relief surface, is piece wound at a winding station (13) and then inserted into an oversize packaging tube (22) and reverse wound to fill the tube. The packaging tube (22) may have overlapping ends which are heated at a sealing station (24) by heat guns (28) to close the tube overthe ends of the wound piece. The tube is preferably preprinted (30) with identification marks and use instructions.
Abstract:
Rounded quartz sand particles (22) are each enclosed in a hardenable resin skin (23) which is integrated with the skins on adjacent particles and which creates a binding of the particles to a primed base (20, 21). A significant fraction of the particles may be remote from the base and only integrated with adjacent particles so that a contoured or embossed effect is created to provide a supplementary non-slip feature. In a process for forming such a surface coating the particles are wetted with a functional liquid, mixed with a binder related to the func- tionalliquid and sprayed. The spraying process is powered by a progressive cavity pump (37) with a selection of particle/ resin ratio such that the pump operates under a Sigma effect.
Abstract:
Rounded quartz sand particles (22) are each enclosed in a hardenable resin skin (23) which is integrated with the skins on adjacent particles and which creates a binding of the particles to a primed base (20, 21). A significant fraction of the particles may be remote from the base and only integrated with adjacent particles so that a contoured or embossed effect is created to provide a supplementary non-slip feature. In a process for forming such a surface coating the particles are wetted with a functional liquid, mixed with a binder related to the func- tionalliquid and sprayed. The spraying process is powered by a progressive cavity pump (37) with a selection of particle/ resin ratio such that the pump operates under a Sigma effect.
Abstract:
Afoamplasticssheetmaterial,suchasforawsllcovering, comprising a substrate web (10), a sacrificed foam coating (11) and a foamed coating (12) having macroscopic (0,5 to 2 mm)voids (13) below the foamed coating (12). The voids (13) create a blister effect (15) with many deep and steep valleys (14). Two processes are described. In one process (Figs. IA- D) the sacrificed foam coating (11) is foamed first, the foamed coating (12) in its unfoamed state is then applied and the material so formed is heated to sacrifice the coating (11) and foam the coating (12). In another process (Figs. 2A - C) both coatings are applied together in their unfoamed state but the coating (11) is selected to foam at a lower temperature than the coating (12). When heated, the coating (11) is foamed and then sacrificed whilst the coating (12) foams and blisters.
Abstract:
A paint container comprises a tray (10) filled with a set medium (18) - such as a thioxotropic paint which responds to shear at its surface to create a liquid phase of shallow depth - and closed with a cover (11). The filling is performed with the cover in place through an aperture (20), in the side wall (19) of the tray, which is subsequently sealed with a plug (21 The filling is preferably made with the tray on edge until a slight bulge (Fig. 4) and a small voidage exist. The bulge and the voidage are then removed by applied external pressure to the tray thus giving a substantially 100% sealed filling so that the container can be moved without spillage and the contents allowed to set without the need for applied heat.
Abstract:
Clear film is laminated to a base such as paper, paper-like materials, plastics and board through the medium of an adhesive which is curable by ultra-violet or electron- beam radiation. The adhesive is irradiated through the clear film to cure it in the absence of oxygen excluded by the act of bringing the film and base together. High solids adhesives with low viscosity and a high flash point are preferred such as methacrylates and dimethacrylates.
Abstract:
A wallcovering comprising a paper ply (13) and plastics ply (10) laminated together and embossed after lamination has materials of the plies chosen so that inherent expansion of the paper ply when wetted is substantially wholly restrained by high resistance of the plastics ply to stretching without taking the plastics ply beyond its elastic limit so that the wallcovering does not bubble or pucker when the paper ply is wetted. Materials suitable for the plastics ply are foamed polystyrene and orientated polypropylene. A degree of fissuring, of the plastics ply during embossing is acceptable and can aid porosity for drying.