摘要:
A method for manufacturing pellets from polymer, comprising: (1) melting polymer flakes in a first section of a melt processing unit to create a first single stream of polymer melt; (2) separating the first single stream of polymer melt into multiple streams of polymer melt by means of a separation element; (3) passing the multiple streams through a multiple stream section of said melt processing unit and exposing the multiple streams to a pressure within the multiple stream section of the melt processing unit as the multiple streams pass through the multiple stream section; (4) recombining the multiple streams into at least one combined stream of polymer melt; and (5) cooling the polymer melt and forming said pellets from the at least one combined stream. The intrinsic viscosity of the at least one combined stream may be determined and, in response, the chamber pressure within the multiple stream section adjusted.
摘要:
Methods of preparing a lignocellulosic biomass-based thermoplastic composition are described. In some embodiments, the method comprises: (a) preparing a mixture of solids comprising lignocellulosic biomass, a meltable solvent and a polyester; and (b) melt-compounding said mixture of solids; thereby preparing a lignocellulosic biomass-based thermoplastic composition. Fibers produced by the methods are also described, as are yarns and fabrics comprising the fibers.
摘要:
An inspecting and repairing device of additive manufacturing technology and a method thereof are provided. The inspecting and repairing device has a powder bed unit, a repairing unit, and an inspection unit. The powder bed unit has a powder platform, a powder spreading mechanism and a laser unit. The repairing unit has a processing mechanism. The inspection unit has a camera and a controller. According to an image of the powder platform captured by the camera, the controller can determine whether spreading powders, whether being overcome a powder spreading defect, or whether driving the processing mechanism to repair a surface of a workpiece.
摘要:
A retrofitably-attachable pre-formed shell covers exposed steel areas of existing stamped chrome or painted truck bumpers, providing a unique re-useable decorative/protective plastic shell cover, the edges of which are tucked under the existing trim pieces of the bumper as a main attachment mechanism. The formed shells can be used to cover existing minor damage on the bumper. Light-passing images can be incorporated on the bumper shells, and backlit without changes to the bumper or deviation from the original surface profile of the bumper.
摘要:
A method in which an interior trim part for a vehicle is produced. The method includes the steps of providing a block of material comprising a plurality of paper layers connected to each other by at least one resin, cutting the block into slices, wherein a cutting plane has an angle between 5° and 85° in relation to layer planes of the paper layers, providing a flexible support layer and applying at least one of the slices to the flexible support layer to obtain a flexible composite layer, and providing a rigid carrier and applying the flexible composite layer directly or indirectly to the carrier.
摘要:
Blow unit for an apparatus (1) for making air-filled bags from a film material (F) having chambers (12), wherein the blow unit (8) comprises a body (26) having an outlet opening (28) for introducing air into the chambers, wherein the blow unit comprises a guiding element (30) for guiding the film material towards the outlet opening, wherein the blow unit (8) comprises an air guiding space (32) that extends from the outlet opening (28) over a distance (D) at least partly along the guiding element, wherein a length (L) of the air guiding space (32) is such that in use, during introducing air into the film material (F), the air guiding space enables introduction of air into two adjacent chambers (12a, 12b) at the same time. The invention further relates to an apparatus comprising such a blow unit, a system comprising such an apparatus and a method for making air-filled bags.
摘要:
A decorative panel comprising a plate-shaped carrier made of a wood plastic composite (WPC) material, wherein the plate-shaped carrier comprises a profile and/or a cutting edge in at least one edge region, and wherein the profile and/or the cutting edge has a substantially sealed surface. A method for producing such panel including a step of subjecting a surface of a profile and/or cutting edge to a thermal treatment to at least partially melt the WPC material in the region of the profile and seal the surface.
摘要:
An apparatus including a carriage adapted to be mounted on and movable along the elongate composite stringer, and a compaction roller mounted on the carriage for compacting film material against the flange surface as the carriage moves along the stringer. The apparatus also includes a film feed roll assembly on the carriage adapted to hold a quantity of film material and to dispense the film material to the compaction roller. The apparatus also includes a take-up reel on the carriage adapted for taking up a backing on the film material as the film material is being dispensed to the compaction roller, a heater on the carriage for heating the flange surface as the carriage moves along the composite stringer, and a film trimmer for trimming edges of the film material to match a contour of the composite stringer after the film material has been compacted against the flange surface.
摘要:
A fabrication method of forming thermoplastic composite laminate parts with tailored and varying thickness in a continuous process. Automated equipment or hand lay-up are used to collate parts or components into a multi-layer stack. Each stack contains all plies, including ply build-up areas, tacked in the proper location to maintain orientation and location. Ply consolidation tooling contains all necessary part features and is coordinated to the customized multiple ply stacks to form a single integrated thermoplastic composite laminate potentially having areas of differing thickness from the multiple ply stacks.
摘要:
Method for manufacturing a cell-like honeycomb structure, formed from a plurality of thermoplastic sheets attached to each other, wherein contoured areas are provided in each sheet, and each free sheet is attached to an adjacent sheet of an intermediate block formed by the different sheets previously attached therebetween, welding at least some of the flat areas contacting this free sheet and this adjacent sheet with a laser source along a continuous line parallel to the contour axis.