摘要:
Three-dimensional objects are produced from a deformable material received substantially continuously in the direction of production and the objects are produced by a deforming process substantially in the direction of production. Rotatable devices are arranged to deform a respective section of the deformable material with at Ieast one of the rotatable devices being shaped so as to vary the extent of deformation applied to the deformable material periodically as a deformable material passes through in the direction of production.
摘要:
A method of forming thermoforming sheets includes providing a molten polymer source. The method further includes providing a first and second roller, the second roller having a first and second section, the first section having a first diameter and the second section having a second diameter. The method further includes feeding molten polymer from the molten polymer source into a nip between the first and second roller. The method further includes forming the thermoforming sheets having a first and second portion, the first portion corresponding to the first and second section of the second roller respectively, the first portion have a first thickness corresponding to the first diameter and the second portion having a second thickness corresponding to the second diameter.
摘要:
A machine (10) and a process for producing lightweight thermoplastic composite products (40) in a continuous manner is disclosed. An oven (11, 11') is provided for heating a dry unconsolidated fabric sheet (13, 13') of commingled fibers of thermoplastic (16) and re-enforcing fibers (17) or carbon fibers to a temperature sufficient to ensure melting and flow of the resin in the voids (18) of the commingled fibers. The unconsolidated composite sheet is conveyed through the oven and then through a first pair of heated rollers (25) at an outlet (19) of the oven whereby to maintain the fabric sheet heated to prevent abrupt cooling at the surfaces while compressing it under pressure. A further pair of rollers (30) at a further reduced temperature is provided whereby the heated sheet is gradually lowered in temperature and the pressure is maintained thereon during consolidation of the commingled fibers to ensure complete flow of the resin in the voids between the reinforcing fibers. The continuous composite consolidated sheet can then be processed to sheet form (45), or laminated in a sandwich, or profiled whereby to form a desired product.
摘要:
Eine Vorrichtung (1) zur Herstellung von Kunststoffwendeln (13) zur Verwendung in einer Maschine zur Herstellung einer Faserstoffbahn, umfassendzumindest zwei Walzen (4, 5), zwischen welchen ein verstellbarer Walzenspalt (6) ausgebildet ist. Die Walzen (4, 5) weisen eine zumindest bereichsweise von einer Zylinderform abweichende Form auf und/oder weisen an ihrer Oberfläche zumindest bereichsweise eine Oberflächenstruktur (10) auf.
摘要:
A device for compressing and processing a material mat at the manufacture of board of lignocellulosic material, comprising rotary compression rolls. At least one of the compression rolls (2) is formed with a perforated shell surface (6) and an axial duct system (7) located inside of the shell surface. A slide shoe (8) abuts sealingly the end wall of the roll (2) for injection of the processing medium to the mat via the duct system (7) in a restricted sector (9) of the roll (2) where the mat is compressed.
摘要:
Gegenstand der vorliegenden Erfindung ist ein Verfahren und eine Vorrichtung zum Herstellen eines Umreifungsbandes (1). Dabei wird zunächst Granulat des eingesetzten Kunststoffes erhitzt und in Längsrichtung zu einem Streifenband (1) extrudiert. Erfindungsgemäß wird das Streifenband (1) an wenigstens einer Längskante (9) abgerundet.