| abstract |
A dispenser ( 10 ) for dispensing flowable materials has a container assembly ( 12 ) having a dividing wall ( 19 ). A first chamber ( 18 ) and a second chamber ( 20 ) are defined in the container assembly ( 12 ). The first chamber ( 18 ) is configured to contain a first flowable material (M 1 ) ( 140 ) and the second chamber ( 20 ) is configured to contain a second flowable material (M 2 ) ( 142 ). A membrane ( 34 ) is positioned in the container and cooperates with the dividing wall ( 19 ) to enclose the first and second chambers ( 18, 20 ). The membrane ( 34 ) has a first section ( 132 ) having a first weld seam ( 148 ) and a second section ( 134 ) having a second weld seam ( 150 ). The first section ( 132 ) is separated from the second section ( 134 ) by a non-rupturable member ( 33 ). Rupture of the membrane ( 34 ) allows the flowable materials into a third chamber ( 42 ) in which the flowable materials mix to form a mixture, and from which the mixture is dispensed. |