Methods of preparation of packaging bags for bottles, methods of

Details Methods of preparation of packaging bags for bottles, methods of Methods of preparation of packaging bags for bottles, methods of

1991-07-15

1993-01-19

Coan, James F.

Package making

Methods

Conforming by stretching or shrinking of cover over contents

533861, 53456, 53557, 53567, B65B 914, B65B 5302

Patent

active

051798190

ABSTRACT:
A method of preparation of packaging bags for bottles, wherein a scrap piece formed at the closed end of the bag is discharged by mechanical methods. In one method, a long cylindrical film sheet is fed to the apparatus so as to place the portion of the film sheet forming the open end of the bag at the top and both sides of scrap pieces are cut and separated simultaneously. In another method, a long cylindrical film sheet is fed to the apparatus so as to place the portion of the film sheet forming a scrap piece at the top, and the scrap piece and the periphery of a closed end of the bag are cut simultaneously. In the method of packaging bottles, fitting of the packaging bag to the bottle is performed smoothly and automatically by widely opening the open end of the packaging bag by utilizing vacuum pads, inserting the bottle with a rod into the open end of the bag by utilizing a flapper, allowing partial heat shrinking of the bag for temporary fitting of the bag to the bottle and then tightly fitting the bag to the bottle by heating. By the above techniques, the operations are carried out continuously by using a long film sheet with good efficiency, reduced labor and good quality.

REFERENCES:
patent: 2800163 (1957-07-01), Rusch
patent: 3053723 (1962-09-01), Plach et al.
patent: 3557526 (1971-01-01), Hartmann
patent: 3558406 (1971-01-01), Kugler
patent: 3579948 (1971-05-01), Lerner
patent: 4553376 (1985-11-01), Okada et al.
patent: 4730437 (1988-03-01), Benno
patent: 4765121 (1988-08-01), Konstantin et al.

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