Apparatus for the manufacture of composite carton blanks

Claim 1

A MACHINE FOR PRODUCING FLATTENED COMPOSITE CARTON BLANKS, SAID MACHINE COMPRISING, MEANS FOR GUIDING A CONTINUOUS WEB OF FLEXIBLE SHEET MATERIAL AS IT IS WITHDRAWN FROM A SUPPLY ROLL, SHAPING MEANS ARRANGED TO FORM THE WITHDRAWN WEB INTO THE SHAPE OF A SERIES OF UNFOLDED COMPOSITE CARTON BLANKS INTEGRALLY CONNECTED END TO END, FIRST FOLDING MEANS LOCATED DOWNSTREAM FROM SAID SHAPING MEANS AND INCLUDING A GUIDE MEANS OPERATIVE TO BEND OVER BOTH MARGINAL EDGES OF SAID WEB ABOUT CORRESPONDING LONGITUDINALLY EXTENDING MARGINAL EDGE CORNER FOLD LINES AND TO PRESS SAID MARGINAL EDGES FLAT AGAINST THE SAME WEB SURFACE, SECOND FOLDING MEANS LOCATED DOWNSTREAM FROM SAID FIRST FOLDING MEANS AND ARRANGED TO BEND OVER SAID WEB IN A MANNER BRINGING THE CORNER FOLD LINES OF SAID MARGINAL EDGES IN TOWARD THE LONGITUDINAL CENTER OF SAID SAME WEB SURFACE, AN ADHESIVE DISPENSING MEANS ASSOCIATED WITH SAID SECOND WEB FOLDING MEANS FOR APPLYING AN ADHESIVE TO THE SIDES OF THE MARGINAL EDGES WHICH COME TOWARDS SAID SAME WEB SURFACE NEAR ITS LONGITUDINAL CENTER, PRESSING AND CREASING MEANS DOWNSTREAM FROM SAID ADHESIVE DISPENSING MEANS FOR FORMING THE FOLDED OVER WEB INTO A PAIR OF COLLAPSED ATTACHED TUBES, AND SHEAR MEANS FOR TRANSVERSELY SEVERING SAID COLLAPSED ATTACHED TUBES INTO INDIVIDUAL CARTON LENGTHS.