Packaging apparatus

Claim 1

PACKAGE FORMING APPARATUS FOR USE WITH POLYVINYLIDENE CHLORIDE FILM IN ITS SUPERCOOLED STATE, SAID APPARATUS INCLUDING FILM EXTRUDING MEANS OPERABLE IN FORMING A PLURALITY OF SEPARATE CONTINUOUS FILMS, FILM CONVEYING MEANS FOR PASSING SAID FILMS THROUGH A SUPERCOOLING BATH AND DELIVERING THE SAME TO DIE FORMING MEANS, SAID FILM CONVEYING MEANS INCLUDING A SERIES OF LAMINATING ROLLERS ASSOCIATED WITH SAID SUPERCOOLING BATH TO FORM SEPARATED TOP AND BOTTOM LAMINATED FILMS, SAID DIE FORMING MEANS INCLUDING SEPARATE MOVABLE TOP AND BOTTOM PLATES WITH THE TOP PLATES MOVING INTO AND OUT OF TEMPORARY PACKAGE FORMING ASSOCIATION WITH TE BOTTOM PLATES, SAID TOP AND BOTTOM FILMS BEING DELIVERED INTO CONTACT WITH SAID TOP AND BOTTOM PLATES RESPECTIVELY, DIE SIDE WALL DEFINING MEANS LOCATED RELATIVE TO EACH SIDE OF SAID PLATES FOR GENERALLY TRANSVERSE MOVEMENT INTO AND OUT OF TEMPORARY PACKAGE FORMING ASSOCIATION WITH SAID PLATES, AND FILM CRYSTALLIZATION MEANS LOCATED SUBSEQUENT TO SAID TOP AND BOTTOM PLATES IN RELATION TO THE DIRECTION OF MOVEMENT THEREOF.