초록 ▼

A reclosable bag having an open end with a side margin adjacent the open end, a metal segment in the side margin having ends extending beyond the opening and a sealing tape overlying the metal strip for excapsulation thereof. Apparatus for manufacturing reclosable bags includes a continuous webbing

A reclosable bag having an open end with a side margin adjacent the open end, a metal segment in the side margin having ends extending beyond the opening and a sealing tape overlying the metal strip for excapsulation thereof. Apparatus for manufacturing reclosable bags includes a continuous webbing of flexible bags joined end-to-end, a continuous roll of metal strip with an arrangement for forming the metal strip into discrete segments. A roll of adhesively coated sealing tape and an arrangement for positioning the sealing tape over a metal strip segment while applying the sealing tape to one end of a flexible bag. A method of forming the reclosable bags includes the steps of providing a serial succession of bags joined end-to-end, stretching a portion of each bag so as to be free of wrinkles, aligning a metal strip segment with the wrinkle-free portion of the bag and sealing the metal strip segment of the bag with a portion of sealing tape.

대표청구항 ▼

A reclosable bag comprising: opposing walls having top and bottom edges extending between a pair of side edges; a marginal seal of preselected width joining the top, bottom and side edges of said walls to form a product-receiving cavity therebetween, the marginal seal having an inner edge adjacent t

A reclosable bag comprising: opposing walls having top and bottom edges extending between a pair of side edges; a marginal seal of preselected width joining the top, bottom and side edges of said walls to form a product-receiving cavity therebetween, the marginal seal having an inner edge adjacent the cavity and an outer free edge; a tear line along said walls between the side edges thereof, located adjacent the marginal seal of said top edge; weakening means in the marginal seal of at least one side edge extending from a free edge of the marginal seal and formed along an edge of said tear line; a metal strip segment on one side wall having a top edge spaced from the tear line and a pair of opposed ends adjacent each side edge terminating between the inner and outer edge of the marginal seal located thereat; and a strip of sealing tape cooperating with said metal strip segment to encapsulate said metal strip segment, said sealing tape having a top edge adjacent said tear line so as to prevent migration of the tearing of said walls during opening of the reclosable bag into major portions of the walls; and said opposing walls being flexible so as to be rollable about said metal strip segment, and said metal strip segment being bendable so as to reclose the opening in the bag formed by tearing the walls along said tear line, upon rolling the walls about the metal strip segment.