| 摘要 |
PCT No. PCT/F183/00014 Sec. 371 Date Oct. 26, 1983 Sec. 102(e) Date Oct. 26, 1983 PCT Filed Feb. 17, 1983 PCT Pub. No. WO83/02929 PCT Pub. Date Sep. 1, 1983.The present invention relates to a liquid-tight cardboard barrel and a method and a device for manufacturing said barrel. The wall portion (1) of the barrel is provided with an inner plastic coating making the wall liquid-tight. In order to ensure liquid-tightness of the barrel, a plastic film disc (4), which is somewhat larger than the cross-sectional area of the barrel, is disposed on the bottom of the barrel so that its edge (6) is positioned against the inner surface of the wall of the barrel, whereafter the edge is welded to the coating (3) of the wall portion but is left loose with respect to the bottom plate (2). |
