A polymer processing system includes a mixer. The mixer includes at least one side wall and a bottom wall that cooperate to define a chamber. At least one side wall also defines a bore. The mixer also includes a pair of rotors that are disposed in the chamber and are rotatably received by the at least one side wall for mixing polymers. The mixer also includes at least one injector that at least partially extends through the bore of the at least one side wall. The polymer processing system also includes a ram that is movably connected to the mixer. The polymer processing system also includes a compressed air supply that is fluidly connected to the at least one injector to supply compressed air to the chamber through the at least one injector.

A method of producing a plastic member of a hair ornament comprises providing first and second plastic materials which are different in material and color. The first plastic material is transparent or translucent. The second plastic material is in the form of a plurality of particles. The first plastic material, the second plastic material, and a bridging agent are mixed and filled into an injection molding machine. The first plastic material melts and envelops the particle-shaped second plastic material. The enveloped particle-shaped second plastic material is outputted to a mold for forming the plastic member of the hair ornament. A hardened product of the plastic member is removed from the mold. The first plastic material forms an outer surface layer of the plastic member. The shape and the color of the second plastic material are directly viewable from an outer side of the product of the plastic member.

A method of producing a plastic member of a hair ornament comprises providing first and second plastic materials which are different in material and color. The first plastic material is transparent or translucent. The second plastic material is in the form of a plurality of particles. The first plastic material, the second plastic material, and a bridging agent are mixed and filled into an injection molding machine. The first plastic material melts and envelops the particle-shaped second plastic material. The enveloped particle-shaped second plastic material is outputted to a mold for forming the plastic member of the hair ornament. A hardened product of the plastic member is removed from the mold. The first plastic material forms an outer surface layer of the plastic member. The shape and the color of the second plastic material are directly viewable from an outer side of the product of the plastic member.

A composition and a method are provided for graphene reinforced polyethylene terephthalate (PET). Graphene nanoplatelets (GNPs) comprising multi-layer graphene are used to reinforce PET, thereby improving the properties of PET for various new applications. Master-batches comprising polyethylene terephthalate with dispersed graphene nanoplatelets are obtained by way of compounding. The master-batches are used to form PET-GNP nanocomposites at weight fractions ranging between 0.5% and 15%. In some embodiments, PET and GNPs are melt compounded by way of twin-screw extrusion. In some embodiments, ultrasound is coupled with a twin-screw extruder so as to assist with melt compounding. In some embodiments, the PET-GNP nanocomposites are prepared by way of high-speed injection molding. The PET-GNP nanocomposites are compared by way of their mechanical, thermal, and rheological properties so as to contrast different compounding processes.

In the field of mixing rubber mixtures, a rotor (100), for use in an internal mixer having a mixing vessel in which the rotor rotates, includes one or more blades (104), each blade having a tip (104a) with a profile having a predefined curvature and an anti-wear device detachably fixed to the tip (104a) of at least one blade. The anti-wear device includes a plate (110) with a profile defined by a lower surface (112) with a curvature complementary to that of the tip (104a) and an upper surface (114) with a curvature complementary to that of a wall of the vessel to define, between them, a zone of minimum distance that allows a passage of the mixture between the plate (110) and the wall of the vessel. One or more fastening systems (135) are fitted and tightened with respect to the plate (110) so as to engage the rotor (100).

The kneading rotor according to one aspect of the present disclosure is a kneading rotor for a kneading machine, comprising a base made of carbon steel or alloy steel for machine structure, a padded layer made of austenitic stainless steel on at least part of a surface of the base and has a hard chromium plated layer on at least part of a surface of the padded layer.

A method of producing a plastic member of a hair ornament comprises providing first and second plastic materials which are different in material and color. The first plastic material is transparent or translucent. The second plastic material is in the form of a plurality of particles. The first plastic material, the second plastic material, and a bridging agent are mixed and filled into an injection molding machine. The first plastic material melts and envelops the particle-shaped second plastic material. The enveloped particle-shaped second plastic material is outputted to a mold for forming the plastic member of the hair ornament. A hardened product of the plastic member is removed from the mold. The first plastic material forms an outer surface layer of the plastic member. The shape and the color of the second plastic material are directly viewable from an outer side of the product of the plastic member.

A method of producing a plastic member of a hair ornament comprises providing first and second plastic materials which are different in material and color. The first plastic material is transparent or translucent. The second plastic material is in the form of a plurality of particles. The first plastic material, the second plastic material, and a bridging agent are mixed and filled into an injection molding machine. The first plastic material melts and envelops the particle-shaped second plastic material. The enveloped particle-shaped second plastic material is outputted to a mold for forming the plastic member of the hair ornament. A hardened product of the plastic member is removed from the mold. The first plastic material forms an outer surface layer of the plastic member. The shape and the color of the second plastic material are directly viewable from an outer side of the product of the plastic member.