6. IN AN APPARATUS FOR MANUFACTURING A FLEXIBLE CONTAINER WHICH INCLUDES A FLAT TUBE OF FLEXIBLE MATERIAL HAVING OPPOSED SIDE EDGES AND A PAIR OF WALLS ONE OF WHICH IS FOLDED BACK UPON ITSELF ADJACENT ONE END OF THE FLAT TUBE TO FORM A PAIR OF TRAPEZOIDAL PORTIONS RESPECTIVELY FORMING PARTS OF SAID WALLS AND A PAIR OF OPPOSITELY DIRECTED TRIANGULAR PORTIONS SUPERIMPOSED ON SAID TRAPEZOIDAL PORTIONS AND RESPECTIVELY HAVING APEXES LOCATED AT SAID SIDE EDGES WITH SAID TRAPEZOIDAL PORTIONS RESPECTIVELY HAVING RECTANGULAR SECTIONS EXPOSED BETWEEN SAID TRIANGULAR PORTIONS, IN COMBINATION, TRANSPORTING MEANS FOR TRANSPORTING THE FLAT TUBE ALONG A GIVEN PATH; GLUE-APPLYING MEANS COOPERATING WITH SAID FLAT TUBE AS IT IS TRANSPORTED ALONG SAID PATH TO APPLY TO SAID FLAT TUBE GLUE ALONG THE PERIPHERY OF A RECTANGLE WHICH EXTENDS ACROSS SAID RECTANGULAR PORTIONS AND OVERLAPS SAID TRIANGULAR PORTIONS THEREOF; MEANS FOR MANUFACTURING AN ELONGATED FLEXIBLE FLAT TUBULAR MEMBER; MEANS FOR MANUFACTURING A RECTANGULAR COVER SHEET; AND A SINGLE MEANS RECEIVING SAID FLAT TUBULAR MEMBER FROM THE MEANS WHICH MANUFACTURES THE SAME AND SAID COVER SHEET FROM THE MEANS WHICH MANUFACTURES THE SAME AND SIMULTANEOUSLY APPLYING BOTH SAID TUBULAR MEMBERS AND SAID COVER SHEET TO SAID FLAT TUBE AS IT MOVES ALONG SAID PATH AT THE GLUE WHICH EXTENDS ALONG SAID RECTANGLE FOR JOINING SAID COVER SHEET TO SAID FLAT TUBE AND FOR JOINING SAID TUBULAR MEMBER TO SAID FLAT TUBE IN A POSITION EXTENDING BETWEEN ONE OF SAID TRIANGULAR PORTIONS AND SAID COVER SHEET SO THAT SAID TUBULAR MEMBER GIVES ACCESS TO THE INTERIOR OF THE CONTAINER.