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 encapsulation 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 encapsulation 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 ▼

Apparatus for manufacturing a reclosable bag, comprising: means for supplying a plurality of flexible bags each having an enclosed interior, a lower closed end and an upper end at which an opening is formed therein through which access is gained to the interior of the bag, the bags joined end-to-end

Apparatus for manufacturing a reclosable bag, comprising: means for supplying a plurality of flexible bags each having an enclosed interior, a lower closed end and an upper end at which an opening is formed therein through which access is gained to the interior of the bag, the bags joined end-to-end to form a continuous webbing; means for supplying metal strip segments having opposed trailing and leading ends; means for supplying sealing tape segments, each coated with an adhesive on one side thereof; means for aligning a metal strip segment with the upper end of one bag; means for positioning a segment of sealing tape over the metal strip segment adjacent the upper end of the one bag so as to encapsulate the metal strip segment between the bag and the sealing tape segment and so as to seal the metal strip segment from corrosion; means for securing a metal strip segment to a segment of sealing tape to form a reclosure subassembly for transport and subsequent attachment to a bag at a remote location; and a transfer station including a transfer arm movable between a first loading and a second stamping position, the arm having engaging means for engaging a reclosure subassembly so as to move the reclosure subassembly into alignment with a bag and for bonding the segment of sealing tape to the bag so as to seal the metal strip segment to the bag, said transfer arm engaging means including vacuum means for forming a vacuum engagement with a reclosure subassembly and maintaining the vacuum engagement as the reclosure subassembly is transferred between the first and second positions.