Devices and methods for producing sandwich composite materials having at least one layer of plastic disposed between at least two outer metallic covering layers may comprise providing at least two semifinished products coated with plastic on one side, activating at least one of the plastic-coated sides of the metallic covering layers directly from the side of the covering layer having the plastic-coating, and connecting the plastic-coated sides of the metallic covering layers to form the sandwich composite material. The activation of the plastic may be performed by way of a heat source that utilizes an activation medium, radiation, or plasma, for example.

A process for manufacturing floor tiles comprising the following steps: scattering granules (62) of a thermoplastic material on a conveying member (52) in order to obtain a first layer of granules (64), superimposing several sheets (5B, 5C) in order to obtain a plurality of adjacent sheets on the first layer of granules (64), each of the sheets containing at least 50 wt % of glass fibers, scattering granules (70) of a thermoplastic material on the uppermost sheet (5B) in order to obtain a second layer of granules (72), pressing and heating the first layer of granules, the plurality of adjacent sheets and the second layer of granules, melting or at least softening the first layer of granules and the second layer of granules, the plurality of sheets being at least partly impregnated by the thermoplastic material of the first layer of granules and of the second layer of granules in order to obtain a core layer after cooling, and using the core layer to produce at least a slab, and using the slab to obtain the floor tiles.

Polarizing beam splitter plates and systems incorporating such beam splitter plates are described. The polarizing beam splitter plate includes a first substrate and a multilayer optical film reflective polarizer that is disposed on the first substrate. The polarizing beam splitter plate includes a first outermost major surface and an opposing second outermost major surface that makes an angle of less than about 20 degrees with the first outermost major surface. The polarizing beam splitter plate is adapted to reflect an imaged light received from an imager towards a viewer or screen with the reflected imaged light having an effective pixel resolution of less than 12 microns.

Building panels with a homogenous decorative surface having a wear layer comprising fibres, binders and wear resistant particles. A building panel including a surface layer and a core, the core including wood fibres, and the surface layer including a substantially homogenous mix of wood fibres, a binder and wear resistant particles, the substantially homogenous mix of wood fibres including natural resins.

A method of preparing a thermoplastic resin composite includes laminating a matrix resin layer and a reinforcing resin layer to prepare a resin laminate, and heat-bonding the resin laminate, and prior to the step of heat-bonding the resin laminate, fixing one or more selected from the group consisting of the reinforcing resin layer and the resin laminate using a stitch resin having a draw ratio of less than 10:1 and a melting point of 150 C. or lower.

A decorative paper of a roll of decorative paper is laminated on paper in a continuous pressing operation under pressure and at elevated temperature by means of an aminoplast resin. The roll of decorative paper comprises serially differing decorative finishes. After the continuous pressing operation, the laminate can be divided into sheets. A method is also described for impregnating, with aminoplast resin, decorative paper that comprises serially differing decorative finishes.

A flexible laminated sheet manufacturing method includes thermocompression-bonding an insulation film formed of a liquid crystal polymer onto a metal foil between endless belts to form a flexible laminated sheet. The thermocompression bonding includes heating the flexible laminated sheet so that the maximum temperature of the sheet is in the range from a temperature that is 45? C. lower than the melting point of the liquid crystal polymer to a temperature that is 5? C. lower than the melting point. The thermocompression bonding also includes slowly cooling the flexible laminated sheet so that an exit temperature, which is a temperature of the sheet when transferred out of the endless belts, is in the range from a temperature that is 235? C. lower than the melting point of the liquid crystal polymer to a temperature that is 100? C. lower than the melting point.

A method to produce a wear resistant foil, including providing a first foil including a first thermoplastic material, applying wear resistant particles on the first foil, applying a second foil including a second thermoplastic material on the first foil, and adhering the first foil and the second foil to each other to form a wear resistant foil.

A system for producing a composite board made of plastic and paper includes a hot press assembly. The hot press assembly includes a first heated belt configured to apply heat and pressure to a composite sandwich. The composite sandwich includes a mat comprising a mixture of paper and plastic and at least one facer positioned above or below the mat. The hot press assembly further includes a roller configured to drive the belt to move the composite sandwich through the hot press assembly and a first non-stick belt configured to separate at least a portion of the composite sandwich from the heated belt as the composite sandwich is moved through the hot press assembly.

A building panel (1) including a water resistant core (5) including thermoplastic material 21 and a surface layer (4) including thermosetting resins. Also, production methods to form a board material (1) with a dry blend of thermoplastic particles 21a in powder form and fillers in powder form and to apply a surface layer (4) with a hot-hot lamination process to a core (5) including such board material.