APPARATUS AND METHOD FOR CONTINUOUS VACUUM FORMING OF EXTRUDED POLYMER SHEETS

An apparatus and method for producing a vacuum formed extruded polymer product employing a plurality of continuously advancing upper and lower mold portions each mounted upon their own track mounted carriage. The adjacent carriages secured to one another by at least one link pin and advanced about t...

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Bibliographische Detailangaben
Hauptverfasser:	KRATZER, JEFF A, KARR, GARY L, VEACH, RICHARD R, BAXTER, L. REX, BEASLEY, BRYAN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An apparatus and method for producing a vacuum formed extruded polymer product employing a plurality of continuously advancing upper and lower mold portions each mounted upon their own track mounted carriage. The adjacent carriages secured to one another by at least one link pin and advanced about the track by at least one drive pin extending outwardly from each carriage for engagement with the flutes of a scroll drive. A lift member is mounted to each lower mold portion for engagement with a closure member wherein as the lift member advances against the closure member on-ramp the lower mold portion elevates until the lift member engages a constant elevation segment wherein the extruded sheet is disposed between the operable vacuum of the upper mold portion and the lower mold portion until the lift member descends the exit ramp of the closure member at the end of the vacuum forming process.