Method for the continuous production of evacuated packages and apparatus for the performance of the aforesaid method

Abstract

Abstract THERE IS DISCLOSED A METHOD AND APPARATUS FOR THE CONTINUOUS EVACUATION AND SEALING OF SUCCESSIVE INDIVIDUAL FILLED PACKAGES WHEREIN TWO FOIL WEBS DEFINING AN UPPER FOIL WEB AND A LOWER FOIL WEB ARE FED ALONG A PREDETERMINED PATH OF TRAVEL. THE LOWER FOIL WEB IS FILLED AT PREDETERMINED SPACED LOCATIONS ALONG ITS LENGTH WITH THE MATERIAL TO BE PACKAGED. THE LOWER FILLED FOIL WEB AND THE UPPER FOIL WEB ARE CONDUCTED PAST A RESPECTIVE ONE OF TWO WALL MEANS OF A VACUUM CHAMBER, SAID RESPECTIVE WALL MEANS BEING PROVIDED WITH OPENINGS AND ABUTTING ONE ANOTHER ALONG AN EDGE. A VACUUM IS CREATED IN THE VACUUM CHAMBER, TO THEREBY PRESS TE FOIL WEBS AGAINST THEIR ASSOCIATED WALL MEANS AND BY MEANS OF SAID EDGE SAID FOIL WEBS ARE PRESSED AGAINST ONE ANOTHER. THEREAFTER THE FOIL WEBS ARE SEALED TOGETHER ALONG THEIR LENGTHWISE EXTENDING EDGES AND IN A DIRECTION TRANSVERSE THERETO ALONG A STRIP PORTION THEREOF. FINALLY, THE FINISHED SEALED PACKAGE IS SEPARATED FROM THE NEXT SUCCESSIVE PACKAGE SUBSTANTIALLY AT THE CENTRAL REGION OF THE ADJOINING STRIP PORTION.

Inventors

• 👤 Herbert Limmer

Bibliographic Details