| 摘要 |
The flexible membrane (4) is introduced through the top open end of the container. The latter is then formed to an outer container (1) containing both chambers. An Independent claim is included for equipment carrying out the method. Preferred features: The outer container blank open end is narrowed to a neck (8) forming the dispensing opening. The necking process is impact extrusion, swaging and/or roller-edging. The edge is turned (7). The can is aluminum. Its basal opening (3) assists membrane positioning. The membrane is fixed at the edge (13) to the container or its blank. The flexible membrane is a bag liner (4) preferably of plastic, laminates, composites, layered composites, or thermoplastics, especially thermoplastic, thermoplastic laminates, or of layered composites alone or with thermoplastics. The liner edge (13) is thermoplastic, fused-onto the outer container, following forming. Liner attachment follows forming, by wrapping the liner edge over the container opening edge. During attachment or turning the edge over, the liner is lifted pneumatically or mechanically by means of a handling unit, acting through the bottom opening. Lifting is assisted by compressed air and/or a slide (9). An attachment unit (10, 12) comprises a ring of heated tool segments (10) griping the edge of the liner and pre-attaching it to the inner edge (11) of the container. The fastening tool (12) is heated and has a spreading edge-turning section. This lays the projecting liner edge over the opening edge, fusing and hence connecting it, permanently sealed to the edge.
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