An insulated structure includes a plurality of walls and a cavity defined by the plurality of walls. A core material is disposed within the cavity. The core material includes particles with a diameter that is in a range of 80-1600 μm. The core material disposed within the cavity can have a density in a range of greater than 350 kg/m.sup.3 to 600 kg/m.sup.3. Methods of manufacturing the insulated structure also disclosed.

Process for densification of a poly(arylene ether ketone) (PAEK) powder or of a mixture of poly(arylene ether ketone) (PAEK) powders, the process being mixing the powder or the mixture of powders, in a mixer equipped with a rotary stirrer including at least one blade, for a period of between 30 minutes and 120 minutes, preferably of between 30 and 60 minutes, at a blade-tip speed of between 30 m/s and 70 m/s, preferably of between 40 and 50 m/s.

The present disclosure is directed to improved poly(arylene ether ketone) powders for use in laser sintering, powder coating, compression molding, or transfer molding.

A method is proposed for producing a functional material, wherein in at least one mixing step (14) a pulverized rigid foam (16) and at least one binding agent (18) are mixed to form a raw mass, and wherein in at least one pressing step (22) the raw mass is pressed to form the functional material, the method proceeding in a continuous manner at least from the mixing step (14) up to and including the pressing step (22).

A method is proposed for producing a functional material, wherein in at least one mixing step (14) a pulverized rigid foam (16) and at least one binding agent (18) are mixed to form a raw mass, and wherein in at least one pressing step (22) the raw mass is pressed to form the functional material, the method proceeding in a continuous manner at least from the mixing step (14) up to and including the pressing step (22).

The invention relates to an apparatus for the pretreatment and subsequent conveying or plastification of plastics, with a container with a mixing and/or comminution implement that is rotatable around an axis of rotation, wherein, in a side wall, an aperture is formed, through which the plastics material can be removed, a multiscrew conveyor being provided, with at least two screws rotating in a housing, wherein the imaginary continuation of the longitudinal axis of the conveyor in a direction opposite to the direction of conveying passes the axis of rotation, where, on the outflow side, there is an offset distance between the longitudinal axis of the screw closest to the container and the radius that is parallel to the longitudinal axis, and in that the two screws closest to the intake aperture are counter-rotating relative to one another.

The invention relates to an apparatus for the pretreatment and subsequent conveying or plastification of plastics, with a container with a mixing and/or comminution implement that is rotatable around an axis of rotation, wherein, in a side wall, an aperture is formed, through which the plastics material can be removed, a multiscrew conveyor being provided, with at least two screws rotating in a housing, wherein the imaginary continuation of the longitudinal axis of the conveyor in a direction opposite to the direction of conveying passes the axis of rotation, where, on the outflow side, there is an offset distance between the longitudinal axis of the screw closest to the container and the radius that is parallel to the longitudinal axis, and in that the two screws closest to the intake aperture are counter-rotating relative to one another.

In order to be able to operate a dust separator with or without a lower closure element (44), the closure element (44) is part of a separate closure unit (40) which is mounted under the dust separator if required. For this purpose, the dust separator, the closure unit (40) and optionally further components, such as a delivery flow generator, are kept available in a kit so as to be able to assemble the treatment unit as required. The dust separator can be operated in batches by means of the closure element (44).

In order to be able to operate a dust separator with or without a lower closure element (44), the closure element (44) is part of a separate closure unit (40) which is mounted under the dust separator if required. For this purpose, the dust separator, the closure unit (40) and optionally further components, such as a delivery flow generator, are kept available in a kit so as to be able to assemble the treatment unit as required. The dust separator can be operated in batches by means of the closure element (44).

A method for grinding plastic waste includes mixing 30 to 80 wt % of plastic waste and 20 to 70 wt % of a woodchip by a mixer after equalizing the size of a diameter or a side thereof so as to be 5 mm or less, and grinding a mixture thereof into a fine powder with a particle size of 1 mm or less by a grinding device including a rotor rotating at a high speed.