A method for extruding a semi-finished product made of elastomeric material. An elastomeric material is fed to an inlet channel of a gear pump with an inlet pressure value and dispensed through an exit channel of the gear pump with an exit pressure value greater than the inlet pressure value. The method detects the exit pressure value and adjusts the operation of the gear pump to maintain a predetermined pressure difference between the exit pressure and the inlet pressure based on the detection of the exit pressure value.

A method for forming a composite tread, the method comprising the steps of: forming a coextruded strip of a first compound and a second compound, wherein the first compound is a tread compound, and the second compound is formed from a second compound, wherein the tread is formed from winding the coextruded strip onto the tire building drum while varying the ratio of the first compound to the second compound

An apparatus including a three-dimensional (3D) drawing pen can permit a user to draw in free space to form a 3D object. The 3D drawing pen can include a housing, an actuator, and a nozzle assembly. The housing is configured to receive material therein and fit in a user's hand. The actuator is coupled to the housing and is configured to control a movement of the material. The nozzle assembly is configured to permit the material to be extruded to permit the user to form the three-dimensional object.

An apparatus including a three-dimensional (3D) drawing pen can permit a user to draw in free space to form a 3D object. The 3D drawing pen can include a housing, an actuator, and a nozzle assembly. The housing is configured to receive material therein and fit in a user's hand. The actuator is coupled to the housing and is configured to control a movement of the material. The nozzle assembly is configured to permit the material to be extruded to permit the user to form the three-dimensional object.

The invention provides a apparatus for reworking of non-vulcanised rubber or de-vulcanized rubber from a rubber component, preferably a rubber tire, to produce recycled rubber. The apparatus comprises a gear pump configured to receive and filter the rubber to produce filtered rubber and a mixer-extruder configured to homogenize and extrude the filtered rubber to produce recycled rubber.

The invention provides a apparatus for reworking of non-vulcanised rubber or de-vulcanized rubber from a rubber component, preferably a rubber tire, to produce recycled rubber. The apparatus comprises a gear pump configured to receive and filter the rubber to produce filtered rubber and a mixer-extruder configured to homogenize and extrude the filtered rubber to produce recycled rubber.

Embodiments of an invention disclosed herein relate to devices, processes, and systems for processing one or more polymers.

Embodiments of an invention disclosed herein relate to devices, processes, and systems for processing one or more polymers.

A method for forming a composite tread, the method comprising the steps of: forming a coextruded strip of a first compound and a second compound, wherein the first compound is a tread compound, and the second compound is formed from a second compound, wherein the tread is formed from winding the coextruded strip onto the tire building drum while varying the ratio of the first compound to the second compound

Multilayer composite materials are described herein. The multilayer composite materials have a first layer comprising a first polymer and a second layer comprising a second polymer. The first layer and the second layer abut each other. The first layer and the second layer each have a thickness in a range of about 10 nm to about 1 mm. The first layer and the second layer are arranged to provide for the multilayer composite material to have reduced dripping and a delayed first dripping time as they undergo a combustion process relative to a single layer material having a same thickness as a thickness of the multilayer composite materials.