Magnetically resealable bag and methods of making the same

A magnetically resealable bag, the magnetically resealable bag comprising:

• a polymeric substrate, the polymeric substrate comprising a first side panel, a second side panel, a closed bottom and an opening, and an inside and an outside;
• the inside of the opening comprising a first side strip and a second side strip;
• the first side strip and second side strip comprising at least one first layer of polymer material and a layer of a magnetizable composition, the magnetizable composition comprising a thermoplastic polymer and magnetizable particles;
• a top portion of the first side strip and a top portion of the second side strip comprising the at least one first layer of polymer material and a bottom portion of the first side strip and the second side strip comprising the at least one layer of polymer material and the layer of the magnetizable composition wherein the at least one first layer of polymer material forms a covering over the layer of the magnetizable composition;
• the top portion of the first side strip is coupled to the inside of the opening at the front panel of the bag, and the bottom portion of the first side strip is free of the inside of the first side panel;
• and
• the top portion of the second side strip is coupled to the inside of the opening at the back panel, and the bottom portion of the second side strip is free of the inside of the second side panel;
• and
• wherein the first side strip and second side strip are aligned and magnetized so as to form a magnetically reopenable and resealable closure.

A method of making a resealable package, the method comprising:

• a) heating a magnetizable composition to a temperature at which the magnetizable composition is in flowable form, the magnetizable composition comprising at least one thermoplastic polymer material and magnetizable particles;
• b) extruding the magnetizable composition at an elevated temperature to a moving transfer belt or roller with a releasable coating and marrying a heat sealable film downstream to the magnetizable composition;
• c) aligning the magnetizable composition while the magnetizable composition is in flowable form;
• d) chilling the magnetizable composition;
• e) magnetizing the magnetizable composition to form a first magnet and a second magnet;
• f) forming a first side strip and a second side strip of the magnetizable composition and heat sealing film;
• and
• g) coupling the first side strip and the second side strip to an inside surface of a magnetically resealable bag.