B29K2105/251

HYBRID ELECTROSTATIC 3-D PRINTER USING LASER FUSING

A 3-D printer includes a development station positioned to electrostatically transfer layers of material to an intermediate transfer surface, and a transfer station adjacent the intermediate transfer surface. The transfer station is positioned to receive the layers as the intermediate transfer surface moves past the transfer station. Also, a platen is included that moves relative to the intermediate transfer surface. The intermediate transfer surface transfers a layer of the material to the platen each time the platen contacts one of the layers on the intermediate transfer surface at the transfer station to successively form a freestanding stack of the layers on the platen. A fusing station is positioned to apply light to each layer, after each layer is transferred from the transfer station to the platen. The fusing station selectively applies the light to sinter a portion of the material within the layer.

Friction Transmission Belt and Manufacturing Method Thereof
20170314641 · 2017-11-02 · ·

The present invention relates to a frictional power transmission belt containing a compression layer having a power transmission surface, at least a part of which is capable of coming into contact with a pulley, in which the compression layer contains a polymer component and a polyvinyl alcohol-based resin.

METHOD FOR MANUFACTURING MIXTURE PTFE THREAD AND MIXTURE PTFE THREAD MANUFACTURED BY THE SAME METHOD
20170312969 · 2017-11-02 ·

A method of manufacturing a mixture PTFE thread using a mixture PTFE powder consisting of PTFE: 73-95 wt %, MoS.sub.2: 3-25 wt %, Al.sub.2O.sub.3: 1-5 wt %, and Al(OH).sub.3: 1-5 wt % comprises heat-retaining step for adding 18-25 wt % kerosene of a solvent to the mixture PTFE powder and keeping it warm at 30-50° C. for 40 to 50 hours, extruding the heat-retained mixture PTFE powder into a rod shape with a circular or elliptical cross section at the cylinder temperature of 70-90° C., rolling the extrusion at 100-150° C. into a 0.3-0.7 mm thick sheet shape, multiple-folding the sheet and passing the sheet through an oven at 250-270° C. at the rate of 10-40 cm/s, and stretching the folded sheet with a stretch ratio of 200-600% in multiple stages after heating the sheet at 450-500° C.

Method for producing object

A method for producing an object includes forming and laying N unit layers into which an object is divided, sequentially from a first layer to an Nth layer, using a resin material as a material, or using a resin material for implementing a step, to form the object, the method including performing a discharge treatment at either or both of a timing while forming a unit layer among the N unit layers, and a timing after forming the unit layer, but before starting forming a next unit layer among the N unit layers.

Natural Polymer-Based Porous Orthopedic Fixation Screw for Bone Repair and Regeneration
20170303980 · 2017-10-26 ·

A bone fixation device made of polysaccharide particles or microspheres fused into a solid structure is provided herein. The bone fixation device may be in the form of an orthopedic screw, orthopedic pin, or orthopedic plate. Methods of making the bone fixation devices described herein are provided as are methods of treating patients in need of bone repair or replacement by implanting a bone fixation device described herein in the patient at a site of bone damage, ligament damage, or bone deformity.

Method for forming a trim element having a layer of ligneous material and an engraved pattern
09796129 · 2017-10-24 · ·

A vehicle trim element is formed by a method that includes the steps of: applying a film on the front face of a layer of ligneous material, with the applied film having at least one engraved pattern; placing the layer of ligneous material together with the applied film in a forming tool, with the front face of the layer being turned towards a wall of the forming tool; pressing the layer of ligneous material together with the applied film against the wall such that the layer adopts the shape of the trim element to be produced and such that, during the pressing of the layer and applied film, the engraved pattern is transferred to the front face of the layer; and removing the film after the pressing of the layer of ligneous material in order to obtain the trim element having a front face with the engraved pattern.

Three-dimensional shaping composition, method for producing three-dimensionally shaped article, and three-dimensionally shaped article

A three-dimensional shaping composition of this invention is a three-dimensional shaping composition which is used for producing a three-dimensionally shaped article by laminating layers and contains particles having a hydrophilic surface and water-soluble monomers having a hydroxyl group. The water-soluble monomer is preferably at least one selected from the group consisting of 4-hydroxybutyl acrylate, 2-hydroxybutyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, and phenol epoxy acrylate.

Polymer powder having low surface energy for powder bed fusion methods
11254030 · 2022-02-22 · ·

A polymer powder having a surface energy of less than 35 mN/m is suitable for melting/sintering powder particles for layer-by-layer production of three-dimensional objects.

Process for producing solid particles

Process for the production of solid particles comprising a material with melting point from −20 to 300° C. at atmospheric pressure, characterized in that a mixture comprising: a1) the material in molten form and a2) the material in solid form is mixed by means of an extruder to give a paste, this is forced through a pelletizing die to give strands, and the strands are comminuted.

THREE-DIMENSIONAL PRINTER DEVICE
20170297322 · 2017-10-19 ·

A three-dimensional printer device includes a supplying apparatus, a formation table, a recycling trough, a distribution apparatus, a power collection cover, and a control unit. The supplying apparatus is provided to contain the powder material. The formation table has a horizontal surface, and one side of the horizontal surface is disposed adjacent to the supplying apparatus. The recycling trough has an opening, the opening is disposed at the other side of the horizontal surface opposite to the supplying apparatus. The distribution apparatus includes a roller; the roller is movable across the horizontal surface between the supplying apparatus and the recycling trough, so that the powder material inside the supplying apparatus can be distributed onto the horizontal surface. The powder collection cover covers the roller. The control unit is electrically connected to the distribution apparatus and controls the roller to move between the supplying apparatus and the recycling trough.