Abstract: A recloseable multibag freezer bag including an inner liner bag and an outer support bag. The inner liner bag is a thermoplastic with a thickness of less than 2 mil and a specified secant modulus, has a mouth through which the interior of the inner liner bag is accessible, and is joined by a mouth seal to the throat of the support bag along the entire length of the mouth of the liner bag substantially enclosing an air space between facing walls of the inner liner bag and outer support bag. The outer support bag is a thermoplastic, and has a mouth and a throat. A recloseable mouth seal is affixed to its mouth to provide recloseable access to the interior of the liner bag through the outer bag while maintaining the enclosed air space between the inner and outer bags.

Abstract: The present invention provides a freezer bag comprising a multibag having at least an inner liner bag and an outer support bag, the inner liner bag having a first sidewall and a second sidewall attached together along respective lateral edges forming edge seals, each sidewall having a top edge, and the liner bag having a folded edge defining the bottom of the liner bag, the outer support bag having two sidewalls attached together along respective lateral edges forming edge seals, each sidewall having top edges defining the opening to the multibag, and the support bag having a folded edge defining the bottom of the multibag, the top edges of the liner bag being attached to an inner surface of each respective sidewall of the support bag wherein the liner is thermoplastic and has a thickness of less than 2.0 mil (50.8 micron).