Patent Number: 6,254,519

Title: Tape-sealed bag and method for producing the same

Abstract: In an automatic filling and closing process for flexible package in which a film is supplied while being longitudinally fused, and the respective steps of filling the longitudinally fused film with contents, laterally fusing the film and cutting the laterally fused area are performed, a slit or a hole is intermittently formed in the supplied film, at a site from unwinding of the film to the longitudinal fusing, during interruption of the supply of the film in the steps of lateral fusing and cutting, and an opening fusing tape is placed over the slit or hole to weld around the perimeter of the slit or hole, thereby obtaining a tape-sealed bag which is easily openable in an opening direction approximately parallel with the laterally fused area. According to the invention, the technique of opening the bag by use of the easily openable fusing tape which employs a film having a relatively low separation strength can be applied to the pillow type bag which can be efficiently produced by use of the automatic filling and closing machine for a flexible package.

Inventors: Toshima; Isao (Kanagawa-ken, JP)

Assignee: Kabushiki Kaisha Hoseki Planning

International Classification: B65D 75/58 (20060101); B65D 75/52 (20060101); B31B 001/90 ()

Expiration Date: 07/03/2018