The disclosure relates to an advanced desktop-type device that allows automatic post-processing of 3D models made by additive manufacturing process utilizing melted polymer layers to improve the quality of the final product and to improve the process parameters. A method for solvent vapor smoothing of a surface of a plastic product by: placing the plastic product to be smoothed in a closed chamber (110) with an evaporator (111) for solvent located at a bottom of the chamber (110); introducing (504) a solvent to the evaporator (111); circulating (505) solvent vapors inside the chamber (110) in a direction from the bottom to a top of the chamber (110); allowing (506) the solvent vapors to condense on the outer surface of the product; and collecting solvent vapors from the upper portion of the chamber (110).

A method for post-treating a three-dimensional object (2) produced by selectively solidifying, layer by layer, of a building material (15) in powder form and/or unsolidified building material (13) in which the three-dimensional object (2) is embedded, wherein the three-dimensional object (2) produced and/or the unsolidified building material (13) are treated with a liquid (33). The liquid (33) comprises a liquid carrier substance and at least one further substance that reduces the surface tension of the carrier substance.

The diaphragm for alkaline water electrolysis according to the present invention comprises a porous polymer membrane, the porous polymer membrane comprising a polymer resin and hydrophilic inorganic particles. A porosity of the porous polymer membrane is 30% or more and 60% or less, average pore sizes at both surfaces of the porous polymer membrane is 0.5 μm or more and 2.0 μm or less, and a ratio of a mode particle size of the hydrophilic inorganic particles to the average pore size of the porous polymer membrane (mode particle size/average pore size) is 2.0 or more.

The present disclosure relates to a device for smoothing of 3D-printed products made by additive manufacturing process, in particular of styrene, comprising specialized modules for providing particular functions, that enables control of process parameters, including a working chamber for receiving the products to be processed. A method for solvent vapor smoothing of a surface of a plastic product by: placing the plastic product to be smoothed in a closed chamber (110) having heated walls (112-116) and an evaporator (111) for solvent; introducing (504) a solvent to the evaporator (111); allowing (506) the solvent vapors to condense on the outer surface of the product; and heating at least one wall (112-116) of the chamber (110), collecting solvent vapors from the chamber (110) and condensing the collected solvent vapors outside the chamber (110).

A method for preparing an element for use in or as a medical device using an additive manufacturing process comprises applying on the element a treating agent in liquid or gaseous form.

The present invention relates to a method for removing powder from a component or part produced by a powder bed additive manufacturing system. The method comprises the steps; providing a part, the part having at least one internal cavity with at least one external opening, the at least one cavity being at least partly filled with powder grains, the powder grains being connected to each other and to the walls of the cavity by mechanical, frictional, electrical, physical or chemical forces; adding medium in liquid phase to the at least one cavity of the part, the liquid having the property that it expands in phase transition from liquid to solid phase; transforming added medium to solid phase to loosen and break up at least a fraction of the powder grains connections from each other; and removing powder from the at least one internal cavity.

A method of enhancing a footwear impression formed on a porous surface using a potassium ferrocyanide solution for footwear impression enhancement includes: forming a porous surface sample by leaving footwear impressions into an object having a porous surface; preparing a potassium ferrocyanide solution for footwear impression enhancement; and applying the potassium ferrocyanide solution for footwear impression enhancement to the porous surface sample.

Porous and microporous parts prepared by additive manufacturing as disclosed herein are useful in medical and non-medical applications. The parts are prepared from a composition containing both a solvent soluble component and a solvent insoluble component. After a part is printed by an additive manufacturing process it is exposed to solvent to extract solvent soluble component away from the printed part, resulting in a part having surface cavities.

The present invention provides a method for preparing an ultra high molecular weight polyethylene (UHMWPE) composite material including the following steps: providing a substrate material having medical grade ultra high molecular weight polyethylene powders, drying the substrate material to obtain fully dried UHMWPE powders, and pressing the fully dried UHMWPE powders to form a UHMWPE board; immersing the UHMWPE board into a graphene oxide solution and performing an ultrasonic induction by an ultrasonic processor such that the graphene oxide solution infiltrates into the UHMWPE substrate to obtain an ultra high molecular weight polyethylene composite material with excellent biocompatibility and tribological properties. The graphene oxide can be adsorbed and evenly spread on the surface of UHMWPE substrate by ultrasonic induction to form a lurbricating film which can effectively reduce wear.

A dispatch system and a dispatch method for manufacturing mold are provided. The dispatch system includes a control unit, a mold material storage unit, a processing cutter storage unit, an object pick-and-place and transfer unit, a mold processing unit and a mold product storage unit. The mold material storage unit includes many unprocessed mold materials. The processing cutter storage unit includes many processing cutters. The object pick-and-place and transfer unit is electrically connected to the control unit and disposed between the mold material storage unit and the processing cutter storage unit. One of the unprocessed mold materials and one of the processing cutters are transferred to the mold processing unit by the object pick-and-place and transfer unit, the unprocessed mold material is processed to form a mold product by the mold processing unit, and the mold product is transferred to the mold product storage unit.