PRESSURE AUTO-ADJUSTING PACKAGE FOR HEATED FOOD AND A COMPOSITE MEMBRANE THEREOF

摘要

In a pressure auto-adjusting package for a heated food and a composite membrane thereof, the composite membrane includes a first membrane coated with a partial release layer thereon in a predetermined width, a second membrane provided with a cutting line corresponding to the partial release layer, and a glue layer disposed between the first membrane and the second membrane to glue the first membrane and the second membrane together, the first membrane and the second membrane are pseudo-glued at the position of the partial release layer, the cutting line of the second membrane is disposed at a heat seal opening and extends to the accommodating space. The package has a pressure generated therein when being heated, the pressure enters into a pseudo-glued area between the second membrane and the first membrane from the cutting line to form a gap where the pressure is released to prevent explosion.

主权项

1. A composite membrane used in pressure auto-adjusting package for heated food, the composite membrane comprises:
a first membrane coated with a partial release layer thereon in a predetermined width; a second membrane provided with a cutting line corresponding to the partial release layer; and a glue layer disposed between the first membrane and the second membrane to glue the first membrane and the second membrane together, wherein the first membrane and the second membrane are pseudo-glued at the position of the partial release layer.