摘要:
A method and apparatus for pretreatment of slider layer for extruded handrails has a slider layer source, a means of conveying the slider layer to a heating module which subjects the slider layer to an elevated temperature for a residence time, and a means of conveying the slider layer to an extrusion die head. One or more control feeders may be implemented for maintaining portions of the slider layer in a substantially tension-free loop as the slider layer is conveyed from the slider layer source to the extrusion die head. A cooling zone may be included to ensure adequate cooling between the heating module and the extrusion die head. Means for reducing heat transfer between the extrusion die head and the slider layer is also provided.
摘要:
Ein aus Körnern (7) bestehendes Fördergut (6) wird aus einem Druckgefäß (4) an einer Einspeisestelle (10) in eine Förderleitung (11) eingespeist, von dort über die Förderleitung (11) zu einer Ausspeisestelle (13) gefördert, dort aus der Förderleitung (11) ausgespeist und einem Extrusionskopf (1) zugeführt. Im Extrusionskopf (1) wird das Fördergut (6) plastifiziert und danach über eine Düse (16) des Extrusionskopfes (1) punktuell extrudiert. Der Extrusionskopf (1) wird während des Extrudierens des plastifizierten Förderguts (6) mittels eines Manipulators (2) dynamisch verfahren. Ein Fördergas (9) wird im Bereich der Einspeisestelle (10) mittels eines Gasverdichters (8) in die Förderleitung (11) eingedrückt. Es entweicht im Bereich der Ausspeisestelle (13) an einer Abscheidestelle (14) aus der Förderleitung (11).
摘要:
A method for forming an antimicrobial composition that includes mixing an antimicrobially active botanical oil (e.g., thymol, carvacrol, etc.) and protein within a melt blending device (e.g., extruder) is provided. Despite the problems normally associated with melt processing proteins, the present inventors have discovered that the processing conditions and components may be selectively controlled to allow for the formation of a stable, melt-processed composition that is able to exhibit good mechanical properties. For example, the extrusion temperature(s) and shear rate employed during melt blending are relatively low to help limit polypeptide dissociation, thereby minimizing the impact of aggregation and embrittlement. While the use of such low temperature/shear conditions often tend to reduce mixing efficiency, the present inventors have discovered that a carrier fluid may be employed to enhance the ability of the botanical oil to flow into the internal structure of the protein where it can be retained in a stable manner. The composition is also typically anhydrous and generally free of solvents. In this manner, the protein will not generally disperse before use and prematurely release the botanical oil.
摘要:
The present invention relates to a machine for manufacturing solid recovered fuel, to a process for obtaining solid recovered fuel and to the solid recovered fuel obtained from said process. The homogenization extruder machine comprises a main body (7) provided with a feed opening (6), an extruder screw (9) and an outlet (14), characterized in that it comprises a compression cone (11) arranged at the final end of the extruder screw (9) and opening and closing means (12) for opening and closing the outlet (14).
摘要:
A kneading extruder comprises a barrel having an extrusion port through which kneaded material including first and second liquid raw material is extruded, a screw shaft placed in the barrel, the screw shaft kneading the first and second raw material to produce the kneaded material in melted state, a screw driving device continuously rotating the screw shaft at a constant speed, a die communicating with the extrusion port of the barrel, the die having an extrusion port through which the kneaded material in pressurized state is extruded, and an ejection device ejecting a portion of the kneaded material between the extrusion port of the barrel and the extrusion port of the die, the ejection device including ejection quantity regulating means for regulating ejection quantity of the kneaded material so that pressure of the kneaded material at the extrusion port of the barrel is kept constant.