B29C2791/009

Three-dimensional printing with build plates having reduced pressure and/or channels for increased fluid flow

A method and an apparatus of forming a three-dimensional object, wherein the method includes providing a carrier and an optically transparent member having a build surface, said carrier and said build surface defining a build region therebetween; filling said build region with a polymerizable liquid, continuously or intermittently irradiating said build region with light through said optically transparent member to form a solid polymer from said polymerizable liquid, continuously or intermittently advancing (e.g., sequentially or concurrently with said irradiating step) said carrier away from said build surface to form said three-dimensional object from said solid polymer, said optically transparent member comprising a build plate for a three-dimensional printer comprising: an optically transparent first channel layer; an optically transparent, gas permeable second channel layer on the first channel layer; and a flexible, optically transparent, gas-permeable sheet having an upper and lower surface, the sheet upper surface comprising a build surface for forming a three-dimensional object, the sheet lower surface being positioned on the second channel layer.

METHOD FOR PRODUCING A FILM FOR A COMPOSITE PANE, METHOD FOR PRODUCING THE COMPOSITE PANE, AND COMPOSITE PANE
20210146588 · 2021-05-20 ·

A method for producing a film for a composite pane of a motor vehicle, which film serves as an intermediate layer of the composite pane, comprising the following steps: providing a polyvinyl butyral (PVB) film base material or an ethylene vinyl acetate copolymer (EVA) film base material; providing at least one colorant; mixing the PVB or EVA film base material with the at least one colorant; liquefying the mixture of the PVB or EVA film base material and the at least one colorant; extruding the film from the liquefied mixture of the PVB or EVA film base material and the at least one colorant; treating the extruded film section by section by irradiating the film in order to form sections of different light transmissivity.

Multiple memory materials and systems, methods and applications therefor
11000741 · 2021-05-11 ·

An apparatus for fabrication of a multiple memory material including: a feeding assembly for feeding shape memory material; a processing station aligned with the feeding assembly to receive the shape memory material to be processed; at least one energy source aligned with an energy source aperture to provide energy to the shape memory material; a shielding gas provider attached to a shielding gas engagement portion to provide shielding gas; and a controller configured to control the feeding assembly, the shielding gas provider and the energy source according to predetermined parameters to form the multiple memory material. A method for fabricating a multiple memory material including: determining process parameters for the shape memory material, via a controller; receiving shape memory material at a feeding assembly; feeding the shape memory material, via the feed assembly, to a processing station; providing shielding gas to the processing station, via a shielding gas provider; and providing energy to the shape memory material, via at least one energy source, based on the process parameters to produce the multiple memory material.

Medical devices and instruments with non-coated superhydrophobic or superoleophobic surfaces
10967105 · 2021-04-06 ·

Device surfaces are rendered superhydrophobic and/or superoleophobic through microstructures and/or nanostructures that utilize the same base material(s) as the device itself without the need for coatings made from different materials or substances. A medical device includes a portion made from a base material having a surface adapted for contact with biological material, and wherein the surface is modified to become superhydrophobic, superoleophobic, or both, using only the base material, excluding non-material coatings. The surface may be modified using a subtractive process, an additive process, or a combination thereof. The product of the process may form part of an implantable device or a medical instrument, including a medical device or instrument associated with an intraocular procedure. The surface may be modified to include micrometer- or nanometer-sized pillars, posts, pits or cavitations; hierarchical structures having asperities; or posts/pillars with caps having dimensions greater than the diameters of the posts or pillars.

Method for obtaining a joint between elements of different materials

A joint between at least one element of metal material and at least one element of plastic material is obtained by pressing these elements in contact against each other, with a simultaneous application of heat. A cladding of metal material and/or of plastic material is applied above the joint by additive manufacturing technology.

Method for producing a decorative composite having at least one local weakening and a weakened spacer fabric

Method for producing a weakened decorative composite from at least one decorative material (25) and a spacer fabric (11), in particular for producing coverings of airbags in motor vehicles, which spacer fabrics (11) have an upper cover layer (12) and a lower cover layer (13) and a layer (15) having spacer threads (14) is located between the cover layers (12, 13), wherein the weakenings in the spacer fabric (11) are blind holes (16) which are introduced into the lower cover layer (13) of the spacer fabric (11), wherein the blind holes (16) substantially pass through the lower cover layer (13) and the layer (15) having the spacer threads (14) and the upper cover layer (12) is substantially not weakened.

LASER-STRUCTURED SURFACE
20210086415 · 2021-03-25 ·

Method for encapsulating in a plastics material part of a plug-in connector that is arranged on an electrical conductor of a cable having an outer sheath, wherein a surface treatment is carried out in a region of the plug-in connector that is encapsulated, characterized in that the surface treatment is carried out with a laser.

Composite resin material and molded article

An object of the present invention is to provide a resin material that yields a resin molded article which has not only a low volume resistivity but also excellent weldability and cleanliness and whose volume resistivity is unlikely to be increased even when subjected to an SPM cleaning treatment and the like. The present invention provides a composite resin material that contains a modified polytetrafluoroethylene and carbon nanotubes and has an average particle diameter of 500 m or smaller.

CORE-SEVERING CANNULA FOR BIOPSY DEVICES

A core-severing cannula for use with tissue biopsy devices, comprising a plurality of flexible fingers for severing a tissue core. The core-severing cannula is positioned coaxially outside of a core-cutting cannula, and is slidable relative to the core-cutting cannula. As the device is activated, the core cutting cannula and core-severing cannula advance together to cut a core of tissue. Subsequently, the core-severing cannula is advanced relative to the core cutting cannula, and the fingers of the core-severing cannula assume a closed position to sever the core from the target site.

METHOD FOR PREPARING THE UPPER SURFACE OF AN ADDITIVE MANUFACTUIRNG PLATEN BY DEPOSITING A BED OF POWDER
20210213536 · 2021-07-15 ·

Method for preparing the upper surface of a build platform for additive manufacturing by powder bed deposition, the method comprises at least one step of increasing the roughness of at least one region of the upper surface of the build platform by imprinting a pattern onto this region. The imprinting of the pattern is done inside the machine for additive manufacturing by powder bed deposition in which the build platform is subsequently used for additive manufacturing by powder bed deposition.