摘要:
Anlage (1) und Verfahren zur Behandlung einer Kunststoffschmelze mit einem Reaktor (2), der ein Reaktorgehäuse (3) aus ersten und zweiten Reaktorgehäuseteilen (4, 5) umfasst; ein Mischelement (12) ist im zweiten Reaktorgehäuseteil (5) angeordnet und daran um eine Rotationsachse (13) drehbar gelagert; der Reaktor ist mitsamt einer Austragsvorrichtung (19) unter Zwischenschaltung zumindest einer Gewichtsermittlungsvorrichtung (21) an einer Aufstandsfläche abgestützt.
摘要:
The invention provides a multi colour die (50) for producing a coloured extruded product (6), the multi colour die comprising an inlet (54) for receiving an extruded product flow (2) extruded from an extruder (10), a manifold chamber (64) fluidly connected to the inlet (54) for dividing the extruded product flow (2) into at least two secondary extruded product flows (2'), at least two secondary flow channels (72) fluidly connected to the manifold chamber (64), each of the two secondary flow channels (72) for receiving and directing a corresponding one of the at least two secondary extruded product flows (2'), at least two, preferably elongated, mixing chambers (76), each mixing chamber (76) being fluidly connected to a corresponding one of the at least two secondary flow channels (72) for receiving a corresponding one of the at least two secondary extruded product flows (2'), each mixing chamber (76) further housing a rotatable, preferably elongated, mixing element (90) for rotating within the mixing chamber (76) for mixing the corresponding one of the at least two secondary extruded product flows (2'), at least two motor assemblies (110), each of the at least two motor assemblies (110) being coupled to a corresponding one of the at least two mixing elements (90) for causing the mixing element (90) to rotate, at least two additive inlets (134) for receiving a colorant (4), each additive inlet (134) being fluidly connected to a corresponding one of the at least two mixing chambers (76) for directing the colorant (4) into the mixing chamber (76), and at least two product outlets (132) for expelling the coloured extruded product (6), each product outlet (132) being fluidly connected to a corresponding one of the at least two mixing chambers (76). A method of producing a coloured extruded product (6) is also provided.
摘要:
A presente invenção descreve um processo de obtenção de um composto plástico a base de material vegetal fibroso compreendendo as etapas de: trituração do material vegetal fibroso para obtenção de partículas; desumidificação das partículas por meio de aquecimento; mistura das partículas com plástico e aditivos acoplantes, deslizantes e corantes; extrusão da mistura em uma extrusora dotada de zonas de aquecimento, estagios de degasagem e regiões de resfriamento. O pedido descreve ainda o composto plástico produzido a partir de tal processo e o equipamento para extrusão do referido composto.
摘要:
Dispositif d'extrusion de mélanges d'élastomères comportant une vis (1) rotative à filets (3) hélicoïdaux agencée dans un fourreau (2) fixe, l'extrémité amont (7) de la vis étant apte à être couplée à des moyens d'entraînement en rotation et l'extrémité aval (8) de celle-ci étant apte à propulser un mélange vers une filière de sortie, la vis ayant une forme tubulaire pour permettre la circulation d'un fluide en provenance d'un circuit hydraulique de refroidissement, le diamètre externe de l'extrémité aval (8) de la vis (1) définissant avec le diamètre interne de l'orifice de sortie (6) du fourreau (2) un entrefer pour le passage du mélange. Selon l'invention, le dispositif comprend une bague de travail (20,30) montée directement amovible à l'aide des moyens de fixation rapide au voisinage de ladite extrémité aval (8) de manière à modifier l'entrefer en fonction de la composition du mélange utilisé et à appliquer une de contrainte de cisaillement au mélange dans ledit entrefer.
摘要:
A method and system for melt processing a thermoplastic composition that contains a starch and plasticizer is provided. The composition is melt blended and extruded through a die to form an extrudate, which is thereafter cooled using a multi-stage system of the present invention that includes at least one water-cooling stage and at least one air-cooling stage. More particularly, the extrudate is initially contacted with water for a certain period time so that it becomes partially cooled and solidified on its surface. After the water-cooling stage(s), the extrudate is also subjected to at least one air-cooling stage in which a stream of air is placed into contact with the extrudate.
摘要:
The invention relates to a method and a device for producing a thin article or a thin coating on a previously manufactured solid body. At least two reactive polymer materials (A, B) are mixed together thoroughly and die resultant mixture (M) is discharged via a nozzle (216) in the form of a thin tube (250). This thin tube is pulverized or atomized by means of the introduction of a controlled flow of pressurized air with the result that die pulverized mixture (Z) may be sprayed onto an open mould (300) or onto a surface (350) or onto a previously manufactured solid body which is to be coated.