A method is provided for treating a surface of a molded part produced in a 3D printing method. In the method, the molded part is introduced into a pressure-tight container, negative pressure, preferably a vacuum to a large extent, is generated in the container after introducing the molded part, a solvent is heated up to a specified solvent temperature, and the heated solvent is introduced from a solvent container into the container under negative pressure. In such a method, the temperature of the molded part is lower than the solvent temperature, and the solvent is evaporated or is introduced as a vapor upon being introduced, the solvent vapor condensing on the surface of the molded part. Also provided is a device for carrying out the method.

The present disclosure relates to a method of manufacturing a 3D printed object. The method comprises condensing solvent vapour on an outer surface of the 3D printed object. The 3D printed object comprises polymer and radiation absorber. The outer surface of the 3D printed object a) comprises pores that absorb the solvent and b) has a surface roughness, Ra, of greater than 5 m. The method also comprises dissolving a portion of the 3D printed object to tailor the surface roughness, Ra, of the 3D printed object to a value of from 0.5 to 4 m.

Apparatus for treating plastic preforms, having a transport device which transports the plastic preforms along a predetermined transport path, having a first application device which loads the plastic preforms with a first flowable medium through their mouth during their transport along a first transport path section, wherein the apparatus has a second application device which acts upon the plastic preforms with a second flowable medium during their transport along a second transport path section through their mouth.

A method is for treating a surface of a molded part produced according to a 3D printing method using a plastics material. A solvent is selected from the group consisting of halogen-free and non-polar hydrocarbons and derivatives thereof and/or a solvent selected from the group consisting of bio-based solvents and is applied to the surface of the molded part. A device is for treating a surface according to the method described.

The method of manufacturing a transparent whitening tray according to the present invention includes 3D printing of the whitening tray using the composition for forming a transparent whitening tray as a raw material (S10), removing uncured resin and liquid from the whitening tray obtained in the above step (S20), post-curing the whitening tray obtained in the above step (S30), post-heat treating the whitening tray obtained in the above step (S40), and washing the whitening tray obtained in the above step (S40).

An imprint apparatus that brings a mold and an imprint material on a substrate into contact with each other to form a pattern of the imprint material on the substrate is provided. The apparatus comprises a supplying unit configured to supply the imprint material to the substrate, and a control unit configured to control the supplying unit in accordance with arrangement data of the imprint material that indicates a position where the imprint material is to be supplied on the substrate, wherein the control unit determines the arrangement data based on a feature related to a spread of a droplet of the imprint material on the substrate.

A tire repairing apparatus includes: a tire support portion rotatably supporting a pneumatic tire; and an application mechanism configured to apply an additive that has a softening effect, to a tread portion of the pneumatic tire supported by the tire support portion, thereby causing the additive to permeate into the tread portion.

The present disclosure relates a method of chemical polishing a 3D printed object. The method comprises treating a 3D printed object with solvent to reduce the surface roughness of the 3D printed object, and controlling the Youngs modulus of the 3D printed object within a target value by selectively removing at least part of the solvent from the 3D printed object.

According to an example aspect of the present invention, there is provided method for manufacturing a barrier layer on top of a paper or carton board from dissolved cellulose, which combines the benefits of the raw material, improved casting method and replacement of sulphuric acid with sodium carbonate or sodium hydrogen carbonate in regeneration bath.

Roof shingles and methods of production thereof are provided. The roof shingles may include ethylene-propylene-diene terpolymer (EPDM). The EPDM may include an outward-facing surface and a substrate-facing surface. The outward-facing surface may include a reveal and a conceal. The reveal may be visible when the roof shingle is installed and the conceal may be covered by an upslope adjacent roof shingle when the roof shingle is installed. The roof shingle may include a reinforcement core. The reinforcement core may include galvanized steel. The reinforcement core may be embedded within the EPDM. The roof shingles may include adhesive sealant. The adhesive sealant may be applied to the substrate-facing surface for binding the roof shingle to a downslope adjacent roof shingle or a substrate. The roof shingles may include a plurality of EPDM granules being located on at least a portion of the surface of the reveal.