Abstract:
Verfahren zum Formen und Kühlen einer zunächst heissen und daher fliessfähigen Käseschmeize (1), die über einen Zuführstutzen auf ein bewegtes metallisches Kühlband (3') aufgebracht wird, wobei mittels einer das Kühlband (3') beaufschlagenden Formwalze (5) mit in der Oberfläche befindlichen Formnestern (7) einzelne Formlinge (6) aus der Käseschmelze (1) geformt werden, wobei beim Formen ein Anpressdruck der Formwalze (5) gegen das Kühlband (3') vorgesehen wird, der eine vollständige Verdrängung der noch heißen Käseschmelze (1) aus dem Bereich der die einzelnen Formnester (7) begrenzenden und an dem Kühlband (3') anliegenden Trennstege (8) bewirkt, wobei die Formlinge (6) aus den Formnestern (7) ausgelöst und durch Verbleib auf dem bewegten Kühlband (3') gekühlt werden.
Abstract:
This invention relates to methods for forming polymer(s) comprising heating of a polymer to be formed to a temperature above its glass transition temperature, continuously depositing (preferably by flowing or laying) the polymer onto a moulding surface (herein after "lower moulding surface") of a first mould, (preferably in a manner that reduces, eliminates or minimises shear stress or other stress in said polymer so deposited), the polymer remaining above the glass transition temperature, applying a moulding surface (herein after "upper surface") of a second mould to at least the exposed surface (herein after "upper surface") of the polymer while the polymer remains at a temperature above the glass transition temperature, and allowing the polymer to transition to below the glass transition temperature while within or between the upper and lower moulding surfaces, wherein the polymer is removed from the moulding surfaces. Apparatus is also provided.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer Arzneimitteldarreichungsform, die aus mindestens einem Teil besteht, das jeweils mindestens ein Arzneimittel und mindestens einen Zusatzstoff aufweist, wobei das Arzneimittel und der Zusatzstoff gemischt und aus einer Düse als Strang extrudiert werden und bei dem der Strang in gewichtsgenaue Teile abgelängt wird. Des weiteren betrifft die Erfindung eine Vorrichtung.
Abstract:
Disclosed herein is an apparatus and method for manufacturing an optical film having superior optical characteristics. The optical film has a smooth surface and superior optical characteristics and can be used as a protective film for an interior component of LCD or an optical storage media, such as DVD, which employs a blue-ray. The apparatus comprises an extruder to compress and discharge a molten resin, a die provided to the extruder to determine a thickness of the resin extruding through the die, a flexible band to which the resin extruding through the die is applied, and a calender roll or a flexible compression band disposed on a path conveying the resin applied to the flexible band to compress the air contact surface of the resin. The method manufactures the optical film by using the apparatus.
Abstract:
Multi-layered film consisting of at least an inner layer (3) and an outer layer (2), with an intermediate layer (4) provided in between, whereby at least the inner and the outer layers (2-3) consist of a homopolymer of polypropylene and/or a copolymer of polypropylene, and whereby the intermediate layer (4) contains at least a mixture of a homopolymer of polypropylene and/or a copolymer of polypropylene with a thermoplastic elastomer, characterized in that the film (1) has a haze of 5% or less.
Abstract:
An unstretched cellulose acylate film hardly breakable upon stretching can be produced by melt film forming and as a result, a highly oriented stretched cellulose acylate film can be obtained. Using an extruder with a screw compression ratio of 2.5 to 4.5 and an L/D of 20 to 50, a cellulose acylate resin is extruded into a sheet at an extrusion temperature of 190 °C to 240 °C from a die to a cooling drum, and solidified by cooling to prepare an unstretched cellulose acylate film 16, which is then stretched to produce a stretched cellulose acylate film.
Abstract:
The present invention provides a method of producing a resin sheet, comprising the steps of: nipping a sheet-like resin material extruded from a die by a mold roller and a plurality of nip rollers placed to face the mold roller, transferring shapes of asperities on a surface of the mold roller to the resin material, and peeling the resin material after the transfer off from the mold roller by winding the resin material around a peeling roller placed to face the mold roller.
Abstract:
Die Erfindung betrifft ein Verfahren zum Herstellen eines Haftverschlussteils (18) mit einer Vielzahl von einstückig mit einem Träger (26) ausgebildeten Verhakungsmitteln (16), bei dem ein Kunststoffmaterial in fliessfähigem Zustand zur Bildung des Trägers (26) einem Spalt (22) zwischen einer Druckeinrichtung (24) und einer Formeinrichtung (10) zugeführt wird, die mit Hohlräumen (14) zur Formgebung des jeweiligen Verhakungsmittels (16) versehen ist. Dadurch, dass neben der Zuführung des Kunststoffmaterials in den Spalt (22) diesem ein Stützteil (32) zugeführt wird, das zwischen Druckeinrichtung (24) und dem Kunststoffmaterial die Abstützung des Trägers (26) vornimmt, lassen sich zum einen Träger (26) mit geringer Dicke erhalten und/oder es ist die Ausformung des Trägers (26) aus der Formeinrichtung (10) erleichtert.
Abstract:
Closed loop control apparatus and methods for reducing ripples in an extruded plastic sheet include, for example, a closed loop speed control system (38) having a roll speed sensor (62), a roll speed controller (64), and a roll drive (66). The roll speed sensor is communicatively coupled to the active extruder roll (20) and configured to determine an actual roll speed of the active extruded roll. The roll speed controller is communicatively coupled to the roll speed sensor and utilizes the actual roll speed and desired roll speed to generate a command signal and transmit such signal to the roll drive. The roll drive is communicatively coupled between the roll speed controller and the active extruder roll, and utilizes the command signal to drive the active.
Abstract:
A method of manufacturing a multilayer thermoplastic resin sheet efficiently without breaking a foamed resin layer, and a multilayer thermoplastic resin sheet are disclosed. A two-layer thermoplastic resin sheet (24) is manufactured by bringing a thermoplastic resin film (19) into close contact with a heated metal endless belt (the surface roughness of which is Ra: not more than 0.5 mu m) (15) or a heated roll (16), placing a foamed resin sheet (18) from a die (11) or a supply roll on the thermoplastic resin film (19), sandwiching the superposed thermoplastic resin film (19) and foamed resin sheet (18) between the belt (15) and roll (16), and pressing them flat. During this flat-pressing operation, the surface pressure is 0.05-1.00 MPa, and the surface pressure application time is 0.5-10.0 seconds.