To provide an ethylene/tetrafluoroethylene copolymer sheet excellent in the mechanical strength and the outer appearance, continuously produced by extrusion, and a process for producing it.

An ethylene/tetrafluoroethylene copolymer sheet obtained by extrusion, which is characterized by having R.sub.0/d (wherein R.sub.0 is an in-plane phase difference [unit: nm], and d is a thickness [unit: nm]) of at most 3.010.sup.3, and a thickness of more than 300 m, and a process for producing it.

The invention relates to a thermocompression device for producing recyclable honeycomb plates with high mechanical strength, which, by means of the proposed configuration, enables high-speed production with an optimised operating width. For this purpose, the device comprises an area for continuously heating and pressing the supplied sheet, a cooling area, a calendering area and a moulding area. Advantageously, the moulding area comprises forming rollers provided with protuberances arranged in continuous rows distributed on the surface of the forming rollers, such that the rows are arranged cross-wise with respect to the sheet supply direction. Recyclable honeycomb plates are thus obtained. The invention also relates to a method implemented using the described thermocompression device.

An apparatus for manufacturing a dry electrode may include a feeder configured to supply fine powder, a plurality of main rollers sequentially disposed in a first direction and configured to calender the fine powder supplied from the feeder into a free-standing film, and a plurality of shear rollers adjacent to the plurality of main rollers in a second direction crossing the first direction. The plurality of main rollers and the plurality of shear roller are configured such that the free-standing film is interposed between the main rollers and the shear rollers.

The present disclosure relates to a method for producing a decorative wall- or floor panel, having the method steps: a) providing a melted polymer mass; b) extruding the molten polymer mass through a nozzle; c) finish-sizing the molten polymer mass to form a panel-like carrier material by means of an assembly of multiple rotatable rolls, wherein the individual rolls are disposed one above the other or one behind the other and each individual roll forms at least one finish-sizing nip with neighbouring rolls, through which nip the melted polymer mass is passed, and wherein the finishing nip heights can be variably adjusted by a horizontal and/or vertical movement of individual rolls during the production process; d) applying a decor pattern that imitates a decor template to at least one sub-region of the at least partly finish-sized carrier material, and e) applying a protective coating to at least one sub-region of the decor.

Systems and methods are described for the compression of graphite flakes to form a continuous graphite web. An example of such a system includes at least one hopper to provide graphite flakes and a set of rollers configured to compress the graphite flakes into a graphite web.