Abstract: A packing case or box having a bottom, opposing lateral side walls, opposing longitudinal side walls and upper side walls, or fixed flaps, at opposing edges of the lateral side walls is produced from a blank piece of thermoplastic material, and an apparatus is provided for producing the packing case which is operated to perform the steps of melting and cutting unnecessary portions for forming the case by pressing a heated die upon the sheet of stock and at the same time impressing scorings or grooves upon the stock to be folded, folding the portions of the side walls and the fixed flaps defined by the scorings or grooves immediately after withdrawal of the heated die from the stock, and welding the heated and melted end walls of the connecting side portions of the stock in a folded position while the stock is in its molten state.
Type:
Grant
Filed:
December 19, 1973
Date of Patent:
August 24, 1976
Assignees:
Bandamatic System Services Kabushiki Kaisha, Sekisui Jushi Kabushiki Kaisha
Abstract: A packing case or box having a bottom, opposing lateral side walls, opposing longitudinal side walls and upper side walls, or fixed flaps, at opposing edges of the lateral side walls is produced from a blank piece of thermoplastic material, and an apparatus is provided for producing the packing case which is operated to perform the steps of melting and cutting unnecessary portions for forming the case by pressing a heated die upon the sheet of stock and at the same time impressing scorings or grooves upon the stock to be folded, folding the portions of the side walls and the fixeed flaps defined by the scorings or grooves immediately after withdrawal of the heated die from the stock, and welding the heated and melted end walls of the connecting side portions of the stock in a folded position while the stock is in its molten state.
Type:
Grant
Filed:
October 15, 1975
Date of Patent:
August 10, 1976
Assignees:
Sekisui Jushi Kabushiki Kaisha, Bandamatic System Service Kabushiki Kaisha