Continuous bag making machine

Claim 1

AN APPARATUS FOR CONTINUOUSLY MAKING INDUSTRIAL SHIPPING BAGS HAVING LAPPED, HEAT-SEALED END CLOSURES WHICH COMPRISES, IN COMBINATION: (A) A FEED MECHANISM FOR SUPPLYING A CONTINUOUS WEB OF FLATTENED, TUBULAR THERMOPLASTIC FILM; (B) MEANS FOR DISPOSING AN INTERNAL MANDREL WORKPIECE WITHIN SAID FLATTENED TUBULAR FILM; (C) MEANS FOR FIXEDLY SECURING THE INTERNAL MANDREL WITHIN THE FLATTENED TUBULAR FILM; (D) MEANS FOR SEVERING THE TUBULAR FILM SIMULTANEOUSLY BLANKING A TOP CLOSURE AND BOTTOM CLOSURE; (E) MEANS FOR INFOLDING A PAIR OF OPPOSED END TABS IN THE BLANKED END OF THE TUBULAR FILM; (F) MEANS FOR ROTATING THE BLANKED TUBULAR FILM TOGETHER WITH THE INTERNAL MANDREL THROUGH A PREDETERMINED ARC; (G) MEANS FOR INFOLDING A PAIR OF OPPOSED SIDE FLAPS IN THE BLANKED END OF THE TUBULAR FILM DURING ITS ROTATION; (H) MEANS FOR SEALING A FIRST RECTANGULAR CLOSURE IN THE BLANKED END OF THE TUBULAR FILM AT THE EXTREMITY OF THE ROTATIONAL ARC; (I) MEANS FOR COUNTER-ROTATING THE TUBULAR FILM TOGETHER WITH THE INTERNAL MANDREL; (J) MEANS FOR DISPLACING THE THUSLY BLANKED TUBULAR FILM RELATIVE TO THE INTERNAL MANDREL ALONG THE LONGITUDINAL AXIS OF SAID BLANKED TUBULAR FILM; (K)D MEANS FOR SECURING THE DISPLACED BLANKED TUBULAR FILM IN CONVEYING MEANS; (L) MEANS FOR OUTFOLDING A PAIR OF OPPOSED SIDE FLAPS AND INFOLDING A PAIR OF OPPOSED END TABS AND TEMPORARILY RETAINING SAID FLAPS IN THIS POSITION IN THE CONVEYING MEANS; (M) MEANS FOR DISPOSING A FLAT FORMING PLATEN IN THE BLANKED END OF THE THUSLY SECURED TUBULAR FILM; (N) MEANS FOR INFOLDING A PAIR OF OPPOSED SIDE FLAPS IN THE THUSLY END OF THE TUBULAR FILM; (O) MEANS FOR SEALING A SECOND RECTANGULAR CLOSURE IN SAID THUSLY BLANKED END OF THE TUBULAR FILM; (P) MEANS FOR WITHDRAWING THE FLAT FORMING PLATEN FROM THE SECOND SEALED RECTANGULAR CLOSURE; AND (Q) MEANS FOR REMOVING THE COMPLETED SHIPPING BAG FROM THE CONVEYING MEANS.

Claim 2

AN APPARATUS FOR CONTINUOUSLY MAKING INDUSTRIAL SHIPPING BAGS HAVING LAPPED, HEAT-SEALED END CLOSURES WHICH COMPRISES, IN COMBINATION: (A) A FEED MECHANISM FOR SUPPLYING A CONTINUOUS WEB OF FLATTENED, TUBULAR THERMOPLASTIC FILM; (B) MEANS FOR DISPOSING AN INTERNAL MANDREL WORKPIECE WITHIN SAID FLATTENED TUBULAR FILM; (C) MEANS FOR FIXEDLY SECURING THE INTERNAL MANDREL WITHIN THE FLATTENED TUBULAR FILM; (D) MEANS FOR SEVERING THE TUBULAR FILM SIMULTANEOUSLY BLANKING A TOP CLOSURE AND BOTTOM CLOSURE; (E) MEANS FOR INFOLDING A PAIR OF OPPOSED END TABS IN THE BLANKED END OF THE TUBULAR FILM; (F) MEANS FOR ROTATING THE BLANKED TUBULAR FILM TOGETHER WITH THE INTERNAL MANDREL THROUGH A PREDETERMINED ARC; (G) MEANS FOR INFOLDING A PAIR OF OPPOSED SIDE FLAPS IN THE BLANKED END OF THE TUBULAR FILM DURING ITS ROTATION; (H) MEANS FOR SEALING A FIRST RECTANGULAR CLOSURE IN THE BLANKED END OF THE TUBULAR FILM AT THE EXTREMITY OF THE ROTATIONAL ARC; (I) MEANS FOR COUNTER-ROTATING THE TUBULAR FILM TOGETHER WITH THE INTERNAL MANDREL; (J) MEANS FOR DISPLACING THE THUSLY BLANKED TUBULAR FILM RELATIVE TO THE INTERNAL MANDREL ALONG THE LONGITUDINAL AXIS OF SAID BLANKED TUBULAR FILM; (K)D MEANS FOR SECURING THE DISPLACED BLANKED TUBULAR FILM IN CONVEYING MEANS; (L) MEANS FOR OUTFOLDING A PAIR OF OPPOSED SIDE FLAPS AND INFOLDING A PAIR OF OPPOSED END TABS AND TEMPORARILY RETAINING SAID FLAPS IN THIS POSITION IN THE CONVEYING MEANS; (M) MEANS FOR DISPOSING A FLAT FORMING PLATEN IN THE BLANKED END OF THE THUSLY SECURED TUBULAR FILM; (N) MEANS FOR INFOLDING A PAIR OF OPPOSED SIDE FLAPS IN THE THUSLY END OF THE TUBULAR FILM; (O) MEANS FOR SEALING A SECOND RECTANGULAR CLOSURE IN SAID THUSLY BLANKED END OF THE TUBULAR FILM; (P) MEANS FOR WITHDRAWING THE FLAT FORMING PLATEN FROM THE SECOND SEALED RECTANGULAR CLOSURE; AND (Q) MEANS FOR REMOVING THE COMPLETED SHIPPING BAG FROM THE CONVEYING MEANS.