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Improved form, fill, and seal machine for making aseptic sealed packages incorporating a plurality of web guiding rollers and flanges for manipulating a continuously fed polyfoil web into a longitudinal tube having a triangular cross section and opposing superimposed web edges that are sealed togeth

Improved form, fill, and seal machine for making aseptic sealed packages incorporating a plurality of web guiding rollers and flanges for manipulating a continuously fed polyfoil web into a longitudinal tube having a triangular cross section and opposing superimposed web edges that are sealed together to form the longitudinal seal in the tube. Web advance may be continuous or intermittent. Induction heating is used to longitudinally seal the edges of the web together to form a tube.

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Apparatus for forming a continuous web of polyfoil material into a tube that can be filled with a product and transversely clamped, sealed, and severed into packages, comprising: means for advancing the polyfoil web; a frame; web guide means for bending the polyfoil web, the web guide means extendin

Apparatus for forming a continuous web of polyfoil material into a tube that can be filled with a product and transversely clamped, sealed, and severed into packages, comprising: means for advancing the polyfoil web; a frame; web guide means for bending the polyfoil web, the web guide means extending along a length so that the web bends as the longitudinal edges of the web are gradually brought close together into a superimposed and opposing relationship as the web is advanced along the web guide means; a pair of first rollers, mounted on the frame a distance apart, one first roller being disposed on each side of the polyfoil web, the first rollers extending from the frame at an angle toward the polyfoil web and downwardly from the frame so as to contact the bent polyfoil web to flatten the portions of the web adjacent to the opposing longitudinal edges as the web advances; groove means for receiving and aligning the longitudinal edges of the web disposed proximate to the longitudinal edges of the web as the web advances; a pair of second rollers spaced a distance apart and adapted to receive the superimposed and opposing longitudinal edges and pinch them together, the second rollers having parallel axes of rotation that are at an angle to the longitudinal edge of the web so as to exert a component of force on the web edges perpendicular to the direction of advance of the web to urge the edges into the groove means and longitudinally into alignment; a third roller mounted in the frame and disposed to contact the web portion between the two flattened web portions to urge the web edges into the groove means, longitudinally aligning the web edges, thereby providing the web with a substantially triangular cross sectional configuration; means for heating the opposing longitudinal web edges; and a pair of fourth rollers spaced a distance apart and adapted to receive the heated superimposed and contacting longitudinal edges and press them together so that they fuse together to form a homogeneous longitudinal seal.