摘要:
Process for preforming a semi-finished product (SP) made of plastic, in which: at least one anti-adhesive membrane (PM) is positioned facing a wall of a preforming mould (MP); the plastic semi-finished product (SP) is positioned facing the anti-adhesive membrane (PM), so that the anti-adhesive membrane (PM) is positioned between the semi-finished product (SP) and the wall; pressure is applied in order to press the semi-finished product (SP) against the wall of the preforming mould (MP), in order to give a shape to the semi-finished products (SP); the pressure ceases to be applied and the thus preformed part (PF) is injected from the wall; and the thus preformed part (PF) is removed from the mould.
摘要:
A sheet body extruded from an extruding die is mounted on conveyers immediately and thereby drawdown and the like is inhibited or prevented to suppress deflection in the thickness, length and the like of the sheet body. Further, the conveyers include a heater inside thereof and thereby reduction of the temperature of the sheet body can be inhibited or prevented by heating by means of the heater. As a result, productivity of the hollow body is improved.
摘要:
The invention relates to a thermoforming installation (1) for producing shaped bodies (114) made of plastic film (50), such as cups, containers, lids, food packagings or the same, using a forming station that comprises a two-part form tool (20). Said two-part form tool (20) has an adjustably fixable upper tool table (28), comprising an upper tool (30) with advancers (92) movably mounted therein and a movable lower tool table (32), comprising a lower tool (34) with cavities (112). The movable lower tool table (32) is guided by means of a guide device (42) and can be moved relative the upper tool table (28) towards or away from it by means of a drive device. The invention is especially characterized in that the guide device (42) is provided with a pivoted guide rail arrangement (40) by means of the which the lower tool table (32) can be linearly guided and pivoted together with the arrangement. The invention also relates to a method for producing the shaped bodies (114) made of plastic film (50).
摘要:
A stacker apparatus, for presses for manufacturing plastic articles such as cups (4) and the like, has a stacking head (6) which faces a mold nest (8) which has at least two positions, an upright position and a rotated position in which the upper surface of the mold nest faces the stacking head. The apparatus has a cam (11) and a cam follower assembly (12) which moves the stacking head during the rotation of the mold nest so that the stacking head is at a reduced distance from the mold nest in the rotated position for expelling the articles.
摘要:
Das Verfahren und die Vorrichtung zum Überführen von aus thermoplastischer Kunststofffolie tiefgezogenen Behältern (9) zwischen einer Aufnahmestation und einer Abgabestation mit einer zwischen den beiden Stationen verschiebbaren Aufnahmeeinrichtung mit Einrichtungen zum Festhalten der Behälter wird so ausgebildet, dass eine Vakuumquelle und eine mit einer Steuerung verbundene Druckmesseinrichtung (25) zum Messen des sich während des Überführens im Inneren der Behälter ergebenden Unterdruckes anschließbar sind, wobei die Steuerung bei Abweichung des gemessenen Wertes von einem vorgegebenen Wert ein Ausgangssignal erzeugt.