Apparatus for mixing polymer, the apparatus comprising (i) a mixer housing including an internal chamber, said internal chamber having first and second sections in fluid communication with each other through a passageway; (ii) a first ram received in said first section; and (iii) a second ram received in said second section, where the apparatus is adapted to receive a composition including polymer within said internal chamber and move said composition between said first and second chambers through said passageway by operation of said first and second rams.

Disclosed is direct ink write (DIW) print extrusion head for 3D printing of viscous elastomers. The disclosed print extrusion head comprises a mixer assembly, comprising a fluid distribution cap coupled to a carrier, an in-line mixer coupled to the fluid distribution cap. A cooling jacket surrounds the in-line mixer. A nozzle is coupled to the in-line mixer and protrudes below the cooling jacket over a work surface. The position of the nozzle relative to the work surface is changeable. At least one heat source is on the chassis and disposed adjacent to the fluid distribution cap. The at least one heat source comprises a heat guiding element to direct heat to a region onto the work surface below the nozzle.

Provided is a resin molded body production method that enables production of a resin molded body in which mechanical strength is good, anisotropy of physical properties is low, and little warpage is developed. This production method is for a resin molded body containing a thermoplastic resin (A) and a cellulose nanofiber (B), the production method including: a step for preparing a main supply material (a1) containing the thermoplastic resin (A) and the cellulose nanofiber (B) and an auxiliary supply material (a2) that is a product of melting treatment of the main supply material (a1); a resin composition formation step for obtaining a resin composition (b) by melting and mixing of the main supply material (a1) and the auxiliary supply material (a2); and a step for obtaining the resin molded body by molding the resin composition (b).

A planetary roller extruder section forms a feed part of an extruder. The planetary roller extruder has an internally toothed housing and an externally toothed central spindle disposed centrally within and at a distance from the housing. Planetary spindles are arranged to rotate in a void between the central spindle and the housing. Each planetary spindle has an external toothing meshing with both the housing and the central spindle. At least one planetary spindle has two axially spaced areas with less than a full set of teeth. Those axially spaced areas include a first area having a first number of teeth and a second area having a second number of teeth. The second number of teeth is less than a full set of teeth and more than the first number of teeth.

A Machine for mixing elastomeric materials with a mixing unit, and a drive unit; the mixing unit has a mixing chamber arranged downstream of the drive unit and closed by a rear wall, a discharge chamber arranged downstream of the mixing chamber, with which it communicates and provided with an opening for discharging the mixture; a pair of inter-penetrating and counter-rotating conical rotors connected with the drive unit and having their vertices situated at the mouth of the discharge chamber. The rotors are rotated by the drive unit in a first sense (RPM+) to cause the mixture to be pushed towards the rear wall of the mixing chamber so as to keep mixing active only inside the mixing chamber, and in second sense of rotation, opposite to the first sense, to cause the mixture to be pushed towards the chamber and the discharge opening for discharging thereof.

Described is a method of manufacturing a binder and the use of the binder to manufacture a roading mixture through mixing with aggregate, or a composite plastic product through the mixture of binder with particulate matter and/or fibre. The binder comprises mixing a plastic with two or more ethylenically unsaturated monomers in a mixing tank. The two or more ethylenically unsaturated monomers may have different homopolymer glass transition temperatures (TO wherein a first monomer structural unit has a homopolymer T.sub.g of greater than 80° C. and a second monomer having a homopolymer T.sub.g of less than 80° C. The plastic may be selected from a plastic comprising a styrene homopolymer, a styrene copolymer, a copolymer of an alkene and vinyl acetate, acrylic polymer and nylon based polymers or co-polymers, polyester-based thermoplastic polymer resin, propylene-based thermoplastic polymer and homo-polymer of an alkene or combination thereof.

A thermokinetic mixer for melt mixing plastics waste includes a housing enclosing a mixing chamber, and a shaft protruding through the mixing chamber and connectable to a drive unit. In the mixing chamber, Y-shaped mixing blades protrude radially from the shaft, wherein the free end of the mixing blades protruding into the mixing chamber is cuboid, and the end opposite the free end of the mixing blades has two legs in each case having at least one through bore. The shaft has polygonal recesses, in which recesses the legs can be fastened by a fastener protruding through the through bores.

Disclosed is a recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder. The recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder according to an embodiment of the present disclosure includes: a raw material supply unit configured to supply a raw material that is a cross-linked polyethylene resin; and a twin screw extruder configured to receive the raw material from the raw material supply unit, the twin screw extruder including a cylinder and a twin screw installed inside the cylinder to rotate in the same direction, the twin screw extruder being configured to de-crosslink and recycle the raw material under a de-crosslinking reaction temperature and reaction pressure atmosphere while continuously transporting the raw material along the twin screw by the rotation of the twin screw.

A plural component dispensing system includes a first heated hose, a second heated hose, a controller, and a dispensing device. The first heated hose and the second heated hose include electrical wires that supply heat to the first and second heated hoses to heat fluid components within the first and second heated hoses. The first and second heated hoses are electrically coupled to the controller and are fluidly coupled to the dispensing device. The controller is configured to control and alternate the electrical power supplied to the first heated hose and the second heated hose to heat the first heated hose independent of the second heated hose.

A method of recycling a mixed plastic waste comprising plastics having different melting temperatures includes conveying the mixed plastic waste through an extruder such that at least some of the higher melting point plastic is passes through the extruder without melting and is present in the extrudate as solid material.