Provided is a method of producing pellets of a graphene-polymer composite, the method comprising: (a) mixing multiple particles of a graphitic material and multiple particles of a solid polymer carrier material to form a mixture in an impacting chamber of an energy impacting apparatus; (b) operating the energy impacting apparatus with a frequency and an intensity for a length of time sufficient for peeling off graphene sheets from the graphitic material particles and transferring the graphene sheets to surfaces of the solid polymer carrier material particles to produce graphene-coated polymer particles inside the impacting chamber; and (c) feeding multiple graphene-coated polymer particles into an extruder to produce filaments of an extruded graphene-polymer composite and operating a cutter or pelletizer to cut the filaments into pellets of graphene-polymer composite. The process is fast (hours as opposed to days of conventional processes), environmentally benign, cost effective, and highly scalable.

Provided is a process for preparing an improved compounded product and a compounded product prepared by the described process.

Processing device of a makeup product comprising: a first plate provided with first mutually adjacent channels with parallel axes, of semicircle section, and a second plate provided with second mutually adjacent channels with parallel axes, also of semicircle section, the first and the second channels being configured such that, when the first plate and the second plate are overlapped with their respective channels facing each other, each pair of first and second channels forms a tubular element with circular section; the device having guides configured to allow the movement of a plate relative to the other, in a direction parallel with respect to the axes of the channels; and at least one movement system of a plate relative to the other.

This disclosure relates generally to corrugated pipe, and more particularly to corrugated pipe with a reinforcing stiffener. The corrugated pipe may include an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests, separated by corrugation valleys. In some embodiments, a stiffener may be positioned within the corrugation valleys. In other embodiments, a stiffener may be positioned within the corrugation crests.

This disclosure relates generally to corrugated pipe, and more particularly to corrugated pipe with a reinforcing stiffener. The corrugated pipe may include an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests, separated by corrugation valleys. In some embodiments, a stiffener may be positioned within the corrugation valleys. In other embodiments, a stiffener may be positioned within the corrugation crests.

Provided is a process for preparing an improved compounded product and a compounded product prepared by the described process.

A method is provided in which suitable carbon-fiber scrap is fed, together with a plastic polymer, to a pulverizer and extruder in order to produce a carbon-fiber polymer mass therefrom and to impregnate the mass with a resin. A regrind prepreg, which is given suitable forms and/or lengths, is thus obtained. The regrind prepregs thus obtained can then be given an approximately final form in an additional step by way of an extrusion process.

An upstream/downstream process for making map pocket stiffeners formed of extruded material and a wire. The extrusion is drawn through a die of a main extruder forming a main body with a channel and the extrudate is then pulled through a first cooling tank to cool the extrudate and set the profile. The wire is automatically indexed into the channel by a programmable indexing device for proper location and distance between each piece of wire. The extrudate with the wire is re-heated and then pulled through a secondary extruder to encapsulate and seal the wire within the extruded material. The extrudate is cooled in a second cooling tank and passes through a series of rollers to achieve a predetermined shape before being cut and profiled to predetermined lengths and dimensions.

A carousel system includes a platform and a plurality of material delivery systems mounted on a periphery of the platform, each respective material delivery system including a first gear and an extruder nozzle head. The carousel system also includes a carousel rotatably mounted on the platform, a first motor adapted to cause the carousel to rotate from a first radial position to a second radial position, a second motor mounted on the carousel, a drive shaft coupled to the second motor, and a second gear coupled to the drive shaft. Engagement of the second gear with one of the first gears causes the corresponding material delivery system to force an amount of a selected material into the corresponding extruder nozzle head, heat the selected material to soften the selected material, and deposit the selected material on a surface. Each material delivery system provides material having a respective color. The carousel system may be used in a 3D printing system.

A composite molding material comprises a thermoplastic resin and reinforcing materials. The reinforcing materials are selected from a glass wool having an average fiber diameter of 1-7 m and a pre-kneading fiber length of 300-1000 m and a fibrous reinforcing material having an average fiber diameter of 7-20 m. The glass wool and the fibrous reinforcing material are dispersed in the thermoplastic resin.