Abstract: A film for a multiple bag which film is a multiple film comprising at least two sheets of film put one on another and having scattered along its both-side edge portions spot-fused portions by which the at least two sheets of film is partially united.
Type:
Grant
Filed:
March 20, 1997
Date of Patent:
November 9, 1999
Assignees:
Asahi Chemical Polyflex Co., Ltd., Orihiro Engineering Co., Ltd.
Inventors:
Michio Sugawa, Tetsuo Matsushita, Yuzi Fukushima
Abstract: A process for providing easy-opening of a sealed and packed bag by means of an automatic bag-making packer involves pressing on a side margin of an outermost turn of a roll of film a cylindrical surface of a cutting roller mounted in the automatic bag-making packer, the cylindrical surface of the cutting roller having multiple edged projections for forming microcuts in the side margin, so that a resulting sealed and packed bag is easily opened from a side margin of the sealed and packed bag without reducing the mechanical strength of a film constituting the sealed and packed bag.