A method for rapid manufacturing of three dimensional discontinuous fiber preforms is provided. The method includes the deposition of a polymeric material containing fibers on a surface to form a tailored charge for compression molding. The reinforced polymeric material may be a thermoplastic or a reactive polymer with viscosity low enough to allow flow through an orifice during deposition, yet high enough zero shear viscosity to retain the approximate shape of the deposited charge. The material can be deposited in a predetermined pattern to induce the desired mechanical properties through alignment of the fibers. This deposition can be performed in a single layer or in multiple layers. The alignment is achieved passively by shear alignment of the fibers or actively through fiber orientation control or mixing. The fibers can be of the desired material, length, and morphology, including short and long filaments.

The present invention relates to a method for changing material in an extrusion device comprising at least two supply devices for supplying feedstock for an extruder, comprising the following steps: identifying a change request for changing the material in the extrusion device, preparing the supply devices for changing the material, separating at least two supply devices from the feed of feedstock to the extruder, discharging feedstock from the separated supply devices, filling subsequent material into the empty supply devices.

The invention relates to a container (30), in particular a bottle (30), for storing and optionally applying a liquid, solvent-containing compositions, having a multi-layer wall (20) comprising at least one side wall of the bottle, the bottom of the bottle and optionally a discharge region at the opening of the bottle,

the multi-layer wall (20) comprising at least an inner layer (21), a barrier layer (22) and an outer layer (23), the barrier layer (22) being adapted to form a barrier for oxygen and/or water vapour, the inner layer (21) and/or the outer layer (23) having a microcellular structure (24), the microcellular structure (24) having fluid bubbles (25), and the fluid bubbles (25) being product of a physically and/or chemically introduced blowing agent. Moreover, the invention relates to a method for producing a container, in particular a bottle (30) for storing and optionally applying a liquid, solvent-containing composition, having a multi-layer wall (20), as well as use of a multi-layer wall (20) for producing the container (30).

A conveyance portion, a barrier portion, and a path are provided at places of a portion of a screw main body in which a kneading portion is provided. In at least one of the places, an entrance is opened to cause raw materials, conveyance of which is limited by a barrier portion to increase pressure on the raw materials, to flow in. The raw materials flowing in from the entrance flow through the path in the opposite direction to a conveyance direction of the conveyance portion. An exit is opened in an outer circumferential surface of the screw main body at a position outside the conveyance portion in which the entrance is opened.

A method of filling a mold comprising filling a majority of a mold cavity with an extrudate from at least one extruder wherein the extrudate, which is conveyed to an inlet of the mold, is at a pressure of 1-500 psi, subsequently isolating the mold cavity from a conduit which conveys the extrudate to the mold cavity, and subsequently using a pressurization member to fill a remainder of the mold cavity with additional extrudate, wherein the pressurization member excepts a pressure above 500 psi on the additional extrudate.

A feeding device for feeding a polymeric material to a print head of an additive manufacturing machine has a feed cylinder that flows directly into the print head at a fitting to feed the polymeric material into the print head; and a movable pusher within the feed cylinder to advance the polymeric material towards the print head.

Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.

Provided is a method of producing a film by cryogenically grinding polypropiolactone to form a powder, and extruding the powder to form the film. Provided herein are also polypropiolactone films having certain biocontent and compostability, as well as certain mechanical and physical properties. Such films may also be suitable for use as packaging materials.

A method for producing a fused unplasticised polyvinyl chloride (UPVC) article (126) is provided. The method includes feeding an UPVC blend (103) into a co-rotating twin-screw extruder (100). The method further includes melting the UPVC blend (103) and conveying fused UPVC to an outlet (120) of the co-rotating twin-screw extruder (100). The method also includes collecting the fused UPVC from the outlet (120) at a rate of at least 100 kilograms/hour per litre of free volume (124) of the co-rotating twin-screw extruder (100).

Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.