摘要:
A kneading apparatus having a kneading unit made up of a plurality of segment parts detachably mounted on a shaft disposed in the barrel includes a first segment part having a first length L1 related to an outer diameter D, a second segment part having a second length L2 shorter than the first length L1, and a third segment part having a third length L3 longer than the first length L1; the first length L1 is [the outer diameter D × a coefficient a]; the second length L2 is [the first length L1 / a coefficient b]; the third length L3 is [the first length L1 × the coefficient b]; the third length L3 is [L1 + L2]; and the kneading unit has a segment pattern made up of a plurality of segment parts and mounted on the shaft interchangeably with another segment pattern.
摘要:
The invention relates to a method of constructing elements which wipe each other during corotation about two parallel axes in such a manner that they constantly touch each other at at least one point.
摘要:
A devolatilization simulation apparatus for screw extruders and a devolatilization simulation program for screw extruders can actually simulate the devolatilization process in a screw extruder. An extruder simulation system for simulating the conditions of devolatilization of an extruder by computationally determining the resin temperature, the pressure, the residence time, the filling ratio, the torque, the power, the solid-phase occupancy and the concentration of the volatile components in terms of distribution in the axial direction of the extruder from the configuration and the operating conditions of the extruder and the physical properties of the resin in the extruder comprising a means for arithmetically simulating the process where the concentration of the volatile components contained in the resin gradually falls as they are devolatilized by vent cylinders.
摘要:
Described herein are methods and processes of manufacturing irradiation crosslinked polypropylene foam. In some embodiments, this includes extrusion of all material components, including a liquid crosslinking agent, to manufacture extruded structures for production of irradiation crosslinked polypropylene foam.
摘要:
The present invention relates to the technical field of screw extruders and to the optimization of screw extruders and extrusion processes. The present invention concerns a method for optimizing the geometry of screw extruders and for optimizing extrusion processes. The present invention also concerns a method for producing screw extruders. The present invention further concerns a computer system and a computer program product with which the methods according to the invention can be carried out.
摘要:
The invention relates to a method for producing closely intermeshing, self-cleaning, co-rotating screw profiles, to the use of screw profiles in screw and transition elements, to novel screw profiles that are produced by the method and to a computer program product for carrying out the method on a computer system.
摘要:
A method for producing a film comprising feeding a composition comprising a crystalline thermoplastic resin having a temperature of higher than the crystallization temperature Tc of the resin to between a first nip-pressing surface and a second nip-pressing surface of a nip-pressing unit, and leading the composition to pass through the nip-pressing surfaces while the nip-pressing unit gives a pressure of from 5 to 1000 MPa to the composition, to thereby form the composition into a film continuously.