Patent ID: 6182850
Filing Date: 2001-02-06
Classification: B65D,Y10T

Abstract:
Closure membrane (11) for containers (10), comprising an outer film (16) and an inner film (15) and a joining layer (17) between both films (15, 16) and a sealing seam zone (13), at least one nonbonded space (21) free of a bonding layer is provided within the sealing seam zone (13) between the outer film (16) and the inner film (15), and within this non-bonded space (21) the outer film (16) features at least one opening (20), and the inner film (15) features at least one opening (19), and a reservoir of material (18) that softens under the influence of heat is provided in the non-bonded space (21) between the outer film (16) and the inner film (15), whereby the at least one opening (19) in the inner film (15) and the at least one opening (20) in the outer film (16) are connected to permit through-flow of a fluid (23), and the at least one opening (19) and the at least one opening (20) are closed by application of heat to the closure membrane (11) as a result of softening of the material (18) that softens on application of heat.