B29K2023/04

Fused Filament Fabrication Using Multi-Segment Filament
20200230869 · 2020-07-23 · ·

A device for fabricating a continuous thermoplastic filament having a plurality of segments comprises first and second filament supply components for supplying first and second thermoplastic filaments and a filament cutting component for cutting each of the first and second thermoplastic filaments into segments. The device also includes first and second filament guide components for guiding the first and second thermoplastic filaments into position to be cut by the filament cutting component. The device further includes a filament segment joining section positioned after the filament cutting component to join the first and second thermoplastic filaments to form a continuous thermoplastic filament having a plurality of segments. The first and second filament guide components are movable so as to alternatively and sequentially permit the first and second thermoplastic filaments to be cut by the filament cutting component.

Method for disposing a blocking material

A method for disposing blocking material within an interior of a component for blocking a beam of radiation from a laser during a laser drilling operation, the method including forming one of a multiple of apertures formed via a first process and forming the remainder of the multiple of apertures formed via a laser drilling process. A component for a gas turbine engine includes a surface with at least one of a multiple of apertures formed via a first process, the at least one of the multiple of apertures formed via the first process in communication with a cavity, a remainder of the multiple of apertures formed via a laser drilling process, the remainder of the multiple of apertures in communication with the cavity.

Flexible polymer-based material for hot isostatic pressing or warm isostatic pressing molds

There is disclosed a sealable, flexible membrane for encapsulating a part to be isostatically pressed at an elevated temperature. The membrane includes at least one first layer of polymeric film having a melting point above the elevated temperature, and at least one second layer disposed on the first layer. The second layer comprising a metal. In one embodiment, the metal comes into contact with the part to be isostatically pressed. The membrane, which typically has a thickness ranging from 10 to about 500 m, and is impermeable to the flow of liquids and gases when sealed, can be used to warm press parts up to about 350 C. and pressures ranging from 5,000 psi to 100,000 psi. Methods to isostatically press parts using this sealable, flexible membrane are also disclosed. Bags made from the sealable, flexible membrane that are used in isostatic presses are also disclosed.

Method for producing polyolefin recyclates

The invention relates to a method for producing polyolefin recyclates, in particular HDPE recyclates. In a specified sequence, color-mixed polyolefin-containing groups are washed at a low temperature, washed at an increased temperature in an alkaline medium, flake-sorted, and treated at an increased temperature in order to remove migration materials. By virtue of the aforementioned method, polyolefin recyclates can be obtained with a substantially improved degree of purity compared to hitherto commercially available recyclates, said recyclates being usable in the production of novel consumer product packaging. Additionally, unpleasant odors connected to known polyolefin recyclates due to the decomposition products of migration materials formed during the extrusion process are largely prevented.

Multilayer non-cross-linked heat-shrinkable packaging films
20200115123 · 2020-04-16 ·

The present invention provides a multilayer packaging film characterized by an improved sealability even through contamination with excellent shrinkability good optics and strength without using internal layers of stiff resins and cross-linking, to flexible containers made therefrom, such as bags, pouches and the like, useful for packaging articles, in particular food items.

Polypropylene resin composition and use thereof

A polypropylene resin composition including 100 parts by weight of basic components including a polypropylene resin (A) with a propylene polymer, the propylene polymer having a MFR of 10 to 300 g/10 min and containing 98 mol % or more of structural units derived from propylene, an ethylene.-olefin copolymer (B) having an ethylene content of 65 to 90 mol %, and optionally an inorganic filler (E); 0.2 to 1 part by weight of a fatty acid amide (C); and 0.2 to 1 part by weight of a surfactant (D).

Fused filament fabrication using multi-segment filament
10611098 · 2020-04-07 · ·

A thermoplastic filament adapted for use in a fused filament fabrication (FFF) printer which has a plurality of segments wherein each pair of adjacent segments is compositionally different and is arranged in a specific order. Also, a method for printing a three-dimensional (3D) article by printing such a filament in a fused filament fabrication (FFF) printer, wherein the fused filament fabrication (FFF) printer carries out a pattern of printing synchronized with the order of the segments in such a filament. Further, a method and device for fabricating such thermoplastic filaments.

Resin panel and forming method
10611113 · 2020-04-07 · ·

Provided is a resin panel without warpage, in which weight reduction and high rigidity of the resin panel have been promoted. The resin panel according to an aspect of the present invention is a resin panel having a back wall, a front wall facing the back wall with a gap therebetween, and ribs formed by having portions of the back wall depressed toward the front wall and welded to the inner surface of the front wall, characterized in that the back wall, the front wall and the ribs are configured by mold-clamping, in a split mold, a first molten resin in a molten state and incorporating a plate-shaped filler, which constitutes the back wall, and a second molten resin in a molten state and incorporating a plate-shaped filler, which constitutes the front wall, the first molten resin and the second molten resin having been extruded and flowed out from an extrusion apparatus, and the longitudinal direction of the ribs is non-parallel to the direction of flow of the first molten resin and the second molten resin.

Energy Transfer Screw and Improved Extrusion Process
20200047387 · 2020-02-13 ·

Lower discharge temperatures and improved flow rates are obtained for the processing of meltable, solid crosslinkable compositions comprising a polymer, e.g., polyethylene, and a peroxide, in a single barrel extruder by equipping the extruder with an energy transfer (ET) screw that comprises: (1) an ET section with a distance averaged ET section depth of 8.0% to 10% of the extruder barrel internal diameter, and (2) a metering section with a metering section depth of 6.0% to 8% of the extruder barrel internal diameter.

Method of molding a lined plastic storage tank

A method of making a plastic tank suitable for containing water comprises forming a tank base which is partially or fully lined with a plastic layer that is different in character or color from the plastic material of the substrate of the tank base. The tank is alternatively formed by injection molding substrate material around the core of a mold which is partially or fully covered by the liner material, and by injecting liner material into the mold to bond it to the tank base substrate in conjunction with retracting part or all of the core, to provide space in the mold for the liner material.