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    • 9. 发明申请
    • FLEXIBLE MEMBRANE WITH VALVE
    • WO2019226097A1
    • 2019-11-28
    • PCT/SE2019/050444
    • 2019-05-16
    • Å&R CARTON LUND AKTIEBOLAG
    • HOLKA, SimonHALLIN, Max
    • B65D47/32B65D33/01B65D51/16B65D81/26B32B15/00B32B29/00B65D30/24B65D30/26B65D35/46B65D47/36B65D47/38B65D65/40B65D77/22
    • The present disclosure pertains to a laminate membrane (1) for sealing an inner compartment (11) in a packaging container (10). The laminate membrane (1) comprises a top member (2) and a bottom member (3). The top and bottom members (2,3) are laminated sheet materials. The top member (2) has a thickness (T tm ), a top member first surface (2a) and a top member second surface (2b) facing the bottom member 3(). The bottom member (3) has a bottom member first surface (3a) and a bottom member second surface (3a). The bottom member first surface (3a) faces the top member second surface (2b). The laminate membrane (1) is provided with a valve (5) for allowing gas in the inner compartment (11) of the packaging container (1) to exit therefrom. The valve (5) has a valve outer edge (5a) and is arranged on the bottom member first surface (3a). The top member (2) is provided with an opening (6) having an opening edge (6a). The valve (5) is arranged within said opening (6) such that the opening edge (6a) encircles the valve (5). A surface area of the opening (6) is greater than a surface area of the valve (5). The valve (5) has a thickness (T v ) and the thickness of the top member (T tm ) is equal to or greater than the thickness of the valve (T v ). The present disclosure also pertains to a stack comprising a plurality of the laminate membranes (1) and a packaging container (10) comprising the laminate membrane (1).