A screw system including a plurality of segmented blades. Each blade segment of the plurality of blade segments including a mounting portion and a vane portion. The mounting portion, having a helical length, for removably attaching the blade segment. The vane portion extending from the mounting portion along the helical length thereof. The vane portion having a front surface that is not parallel to a back surface from the mounting portion to a tip of the blade segment, along the helical length.

Extruded molds and methods for manufacturing composite structures using the extruded molds are disclosed. The molds may include recessed or raised longitudinal features to impart a corresponding shape to the molded composite structures. The composite structures may be panels used to construct cargo vehicles, for example.

Described herein is a manual process for injection molding of coated components, more particularly coated soles of plastic, where first of all the molding tool is lined with a release agent composition and, after flashing of this release agent composition, a composition for forming the component is injected. After crosslinking of these two compositions, the produced coated component is removed from the molding tool and subjected optionally to an aftertreatment.

A method for forming an injection-molded part includes applying a coating to a mold cavity; maintaining a water-dispersible, thermoplastic composition at a temperature between 170 C. and 190 C., wherein the thermoplastic composition comprises partially-hydrolyzed polyvinyl alcohol (PVOH), polyethylene glycol (PEG), plasticizer, and a hydrophobic polymeric component, wherein the composition has a melt flow rate of from 40 grams per 10 minutes to 160 grams per 10 minutes when subjected to a load of 2160 grams at a temperature of 190 C. according to ASTM Test Method D1238-E; injecting the thermoplastic composition into the mold cavity; shaping the thermoplastic composition into a molded part within the mold cavity; and maintaining the mold temperature at less than 20 C.

A wind blade finishing system is provided that is robust, cost effective, and has low volatile organic compounds while reducing overall process time. The wind blade finishing system combines a gel coat, putty, and top coat and has weather resistant properties, and takes the place of processes for producing turbine wind blades covered by gel coat, contouring putty, pore filler, top coat, and leading-edge coating. The finishing system significantly reduces the need for sanding before applying the top coat, and in turn up to 11 hours of time associated with the sanding process, as well as preventing pin holes from showing through the surface of the wind blade without the need of a secondary product/operation thus eliminating pore filler, associated surface preparation and rework. The finishing system reduces overall system cure time, currently averaging 12 hours, and also reduces the number of products/steps needed to a minimum number.

A process for the production of an article for the cladding of floors or walls, comprising the steps of, in a mold: a) optionally applying a gel coat layer, based on a first curing polymer resin, on the inside of the mold in order to obtain a coated mold, and b) introducing into the core of the mold or into the core of the coated mold from step a) a filling composition which is based on a second curing polymer resin supplemented with at least one mineral filler, wherein core contains at least 5% wt and at most 20% wt of curing polymer resin, relative to the dry amount of filling composition, and the filling composition contains only one single initiator in a concentration of 0.5% wt to 5.0% wt relative to the amount of curing polymer resin in the filling composition.

Embodiments of the invention relate generally to the field of multilayer color coatings, and more particularly to multilayer coatings comprising one or more gel coat layers and visual effect pigments.

This invention relates to the manufacturing of durable thermoset in-mold finishing films (TIMFFs) combining in-mold decorating and in-mold durable exterior grade coating capabilities, to molded articles having TIMFFs adhering to their surfaces and both showing a decoration and providing protection, and to thermosetting resin formulations used in the manufacturing of TIMFFs. In some embodiments, the thermoset is prepared via polyurethane chemistry; the manufacturing process comprises reaction injection molding (RIM) with a specially designed mold; and articles having TIMFFs adhering to their surfaces include graphic panels for durable signage, structural graphics, molded flooring, prefabricated housing, aerospace structures and body panels, automotive structures and body panels, and marine structures and body panels. In addition to RIM, the TIMFF technology is also compatible with other processes, such as injection molding, compression molding, resin transfer molding, spin casting, rotational molding, thermoforming, roll lamination, use of a platen/laminate press, and blow molding.

The present invention relates to a method for producing a composite part, preferably an automotive trim composite part, comprising a textured skin and a rigid or foam substrate layer. The method comprises the steps of forming the skin by spraying or casting an aqueous thermoplastic dispersion which is derived from the melt blending of thermoplastic polymer, a dispersing agent, and water onto a textured mold and molding the rigid or form substrate onto the skin.

Embodiments of the mold for making the Chemical Resistant Composite Support Pad are comprised of a top and bottom molds where the top mold is comprised of a mold lip, a pneumatic ejection port, a lid aperture, a magnetic cover for the pneumatic ejection port, and a lid. The method of making a chemical resistant composite support pad comprises the steps of spraying a coating of polymer agent into the top mold and the bottom mold. A controlled run of an agent is sprayed into the joined top and bottom molds along the joint of the top mold and the bottom mold. Polymeric foam is injected through the lid aperture, the lid is replaced, and the foam is allowed to cure. The molds are separated, and compressed air is used to eject the support pad out of the mold. Any irregularities are repaired by spraying the coating of polymer agent.