The present invention relates to an extrusion die and a method for extruding a sheet using the same, and according to one aspect of the present invention, there is provided an extrusion die comprising a storage part configured to hold a raw material, the storage part defining a first width, a pressure part configured to move the raw material through the storage part, a first die defining a second width less than the first width, such that a flow width of the raw material becomes narrower, a second die in fluid communication with the first die, the second die defining a width that increases from the second width to a third width, such that the flow width of the raw material passing through the first die becomes wider and a flow thickness becomes smaller, and a heating part configured to heat the raw material passing through the second die.

The present invention relates to a process for producing a fluoropolymer article having a high surface roughness and high coarseness which comprises the following steps: a) forming a paste comprising a fluoropolymer into a paste-formed fluoropolymer product at a temperature lower than 50 C., b) densifying the paste-formed product, and c) stretching the densified paste-formed fluoropolymer product in at least one direction.

The present invention further relates to a fluoropolymer article obtainable by a process according to the invention.

The present invention furthermore relates to a fiber comprising, or consisting of, a fluoropolymer having a surface roughness expressed as a peak to valley distance (Rt) greater than 10 micrometer and/or an average surface roughness (Ra) greater than 1.5 micrometer.

The present invention furthermore relates to a membrane comprising, or consisting of, a fluoropolymer having a coarseness index /EBP of at least 0.3, an air permeability of 15 ft.sup.3/ft.sup.2/min or higher and a node aspect ratio of below 25.

A conductive polymer composite is disclosed. The composite comprises a thermoplastic polymer and a plurality of metal-plated carbon nanotubes. A method of three dimensional printing using the conductive polymer composite and a filament comprising the conductive polymer composite are also disclosed.

In a method for producing a three-dimensional mold and a three-dimensional shaped object (1) by means of layer-by-layer material application, geometry data for the shaped object (1), a support part (2) having a base surface (3) for holding the three-dimensional shaped object (1), and a first and a second material (4, 5) that can be solidified are made available. In the solidified state, the second material (5) has a greater strength than the solidified first material (4). The solidified first material (4) can dissolve in the solvent. To form a negative-shape layer (12), material portions of the flowable first material (4) are applied to the base surface (3) and/or to a solidified material layer of the three-dimensional shaped object (1) situated on this surface, in accordance with the geometry data, in such a manner that the negative-shape layer (12) has at least one cavity (13) that has a negative shape of a material layer of the shaped object (1) to be produced. The negative-shape layer (12) is solidified. To form a shaped-object layer (16), the cavity (13) is filled with the second material (5), and afterward the second material (5) is solidified. Regions of the solidified negative-shape layer (12) and/or shaped-object layer (16) that project beyond a plane arranged at a predetermined distance from the base surface (3) are removed by means of machining material removal. The steps mentioned above are repeated at least once. The negative-shape layers (12) are brought into contact with the solvent in such a manner that the solidified first material (4) dissolves in a solvent.

Processing device of a makeup product comprising: a first plate provided with first mutually adjacent channels with parallel axes, of semicircle section, and a second plate provided with second mutually adjacent channels with parallel axes, also of semicircle section, the first and the second channels being configured such that, when the first plate and the second plate are overlapped with their respective channels facing each other, each pair of first and second channels forms a tubular element with circular section; the device having guides configured to allow the movement of a plate relative to the other, in a direction parallel with respect to the axes of the channels; and at least one movement system of a plate relative to the other.

A method for making an expanded, and optionally multi-component and/or colored PTFE monofilament is disclosed. The method includes forming a first paste by mixing a PTFE powder with a hydrocarbon solvent; forming an extrusion preform by pressing the first paste into a form; curing the extrusion preform by exposing the extrusion preform to a first temperature for a first time duration; forming a green monofilament by extruding the first paste through a die; expanding the green monofilament by exposing the green monofilament to a second temperature for a second time duration, the second time duration occurring after the first time duration; stretching the green monofilament substantially along a longitudinal axis of the green monofilament, the stretching the green monofilament occurring after the expanding the green monofilament; and sintering the green monofilament after the stretching the green monofilament.

To provide a modified polytetrafluoroethylene which is excellent in the moldability by paste extrusion and the mechanical property of the molded article.

A modified polytetrafluoroethylene fine powder which is a fine powder of a non-melt-moldable modified polytetrafluoroethylene, characterized in that the modified polytetrafluoroethylene comprises units derived from tetrafluoroethylene, units derived from a perfluoroalkyl vinyl ether represented by CF.sub.2CFOC.sub.nF.sub.2n+1 (wherein n is an integer of from 1 to 6), and units derived from a perfluoroalkylethylene represented by CH.sub.2CHC.sub.mF.sub.2m+1 (wherein m is an integer of from 3 to 6), and that the content of the units derived from the perfluoroalkyl vinyl ether is from 0.1 to 0.25 mass % and the content of the units derived from a perfluoroalkylethylene is from 0.001 to 0.1 mass %, based on all monomer units in the modified polytetrafluoroethylene.

A phosphor-containing identification substance of the present invention includes a substrate and a phosphor-containing silicone thin layer. The whole or part of the surface of the substrate is covered with the phosphor-containing silicone thin layer. The phosphor has identification properties that the phosphor emits light when irradiated with ultraviolet rays or black light, and does not emit light when irradiated with visible rays. A method for producing the phosphor-containing identification substance of the present invention includes bringing a silicone composition for forming a phosphor-containing thin layer into contact with the substrate after or simultaneously with the molding of the substrate, followed by heating. This provides the phosphor-containing identification substance that can be applied to a silicone thin film, has excellent adhesive properties with the substrate, and maintains the inherent properties of the substrate without being impaired by marking, and the method for producing the same.

A method for making an expanded, and optionally multi-component and/or colored PTFE monofilament is disclosed. The method includes forming a first paste by mixing a PTFE powder with a hydrocarbon solvent; forming an extrusion preform by pressing the first paste into a form; curing the extrusion preform by exposing the extrusion preform to a first temperature for a first time duration; forming a green monofilament by extruding the first paste through a die; expanding the green monofilament by exposing the green monofilament to a second temperature for a second time duration, the second time duration occurring after the first time duration; stretching the green monofilament substantially along a longitudinal axis of the green monofilament, the stretching the green monofilament occurring after the expanding the green monofilament; and sintering the green monofilament after the stretching the green monofilament. The method may include doing all or some of the expanding, stretching and sintering steps simultaneously.

The present invention relates to a decorative welding rod, and to a method to produce a decorative welding rod, comprising a gelified plastisol-based composition comprising a PVC resin in a benzoate plasticizer, and unfused and coloured PVC-based particles.