A mixing and extrusion machine (10) has a converging conical twin-screw mixer (12) with a fixed frame (14) that supports sleeves (16) in which two screws (18) are mounted at an angle between an opening (22) arranged upstream of the sleeves, where an introduction hopper (24) of the machine (10) feeds the screws, and an outlet (25) arranged downstream of the sleeves, where the mixer discharges the mixture at the end of a mixing cycle. At least one mobile sleeve (34) is disposed towards the outlet, each mobile sleeve with a support surface (34a) of a predetermined surface area (34a) according to an elasticity of the mixture, and each mobile sleeve having one or more mobile elements that move by a linear movement with respect to the outlet in order to adjust a predetermined space between the sleeves and the screws.

A foam dispensing apparatus and system thereof can be used for dispensing a mixture of a resin component and an isocyanate component. The foam dispensing apparatus contains a heated hose assembly, a spray gun containing a spray head and a mix tube, and a nozzle for dispensing the resin and isocyanate components from the spray gun. Components of the foam dispensing system are lightweight and/or low cost thereby facilitating use and maintenance.

This application is directed to polymer blends of polyethylene naphthalate, polytrimethylene terephthalate, and polyethylene naphthalate, for use in fibers, such as carpet fibers, and other applications. This application is also directed to methods of producing such polymer blends and fibers.

Disclosed herein is a device for producing composite components including at least one wound fiber reinforced polymer layer, including: a support with a first holding device and a second holding device for mounting a liner in between, where the first and the second holding device are such that the liner can rotate around a central rotation axis which extends through the first holding device and the second holding device, and at least two movable arms for feeding a fiber structure, where the support is established such that the liner can be moved axially parallel to the central rotation axis and each movable arm for feeding the fiber structure can be moved perpendicular to the central rotation axis. Further disclosed herein is a process for producing composite components using the device.

A device for preparing a liquid polymer blend is proposed having a storage container for the liquid polymer blend; a degassing device, which is arranged downstream of the storage container, for the liquid polymer; a gassing device, which is arranged downstream of the degassing device, for adding an additive gas to the liquid polymer blend; a homogenization unit, which is arranged downstream of the gassing device, for the polymer blend to which the additive gas was added; and an output line, which is connected to the homogenization unit, for the homogenized polymer blend.

Coreactive three-dimensional printing of parts using coreactive compositions is disclosed. Coreactive additive manufacturing can be used to fabricate parts having a wide range of properties.

A formulation for a photopolymer composite material for a 3D printing system includes an acrylate oligomer, an inorganic hydrate, a reinforcing filler, and an ultraviolet (UV) initiator. In the formulation the acrylate oligomer may be found in the range between about 20.0-60.0 w % of the formulation. The inorganic hydrate may be found in the range between about 20.0-50.0 w % of the formulation. The reinforcing filler may be found in the range between about 5.0-60.0 w % of the formulation, and the UV initiator may be found in the range between about 0.001-0.5 w % of the formulation. A method of generating a formulation of a photopolymer composite material for use in a 3D printing system includes using an acrylate oligomer, an inorganic hydrate, a reinforcing filler, and an ultraviolet (UV) initiator.

Continuous compounding systems include a feeding section and a compounding section. Method for compounding or mixing solid matter and liquid matter include providing a continuous compounding system, adding matter to the continuous compounding system, and mixing or compounding the matter.

A device for producing a rubber mixture and/or non-vulcanized vehicle tire components and/or a vehicle tire, comprising a first mixer comprising a mixing chamber with at least one first mixing rotor and with a first volume ratio, and a second mixer comprising a mixing chamber with at least one second mixing rotor and with a second volume ratio, wherein the ratio of said first volume ratio to said second volume ratio lies in the range from 50:1 to 1:10. Also disclosed is the use of the device and a method for producing non-vulcanized vehicle tire components and/or a vehicle tire.

An extruder is disclosed including: a barrel; and a screw provided with a helical groove; wherein the screw comprises a dewatering portion comprising a first portion, and a second portion at a location downstream from the first portion; wherein, at the dewatering portion, clearance between the groove and the barrel decreases as one proceeds downstream; and wherein clearance reduction ratio at the first portion is greater than clearance reduction ratio at the second portion.