| 摘要 |
1,198,286. Portable containers. SOBREFINA S.A. 16 Oct., 1967 [4 Nov., 1966], No. 46097/67. Heading B8D. [Also in Division B5] The wall of a container is formed from a laminate having a barrier layer 20 of aluminium foil or the like with outer layers 21, 22 of polyethylene or other thermoplastic material, the laminate being pleated and the folds being joined together by melting the thermoplastic layers so that they merge to produce continuous outer surfaces. The laminate may be doublepleated as shown, or single-pleated, Fig. 4 (not shown). The container 1 may be formed from a circular disc-shaped blank into a generally cylindrical shape with either a hemispherical base, as shown, or a plane base, and may be supported in an outer sleeve 2 of cardboard with a rolled bottom 13 on which a base 3 rests. The upper part of the container is formed with a flange 6 to which a cover 4 may of similar laminate to that used for the container itself is welded, preferably with the interposition of a thermoplastic ring or disc 7. The cover 4 is also provided with an outer stiffening sheet. |
