| 摘要 |
PCT No. PCT/SE84/00182 Sec. 371 Date Jan. 7, 1985 Sec. 102(e) Date Jan. 7, 1985 PCT Filed May 15, 1984 PCT Pub. No. WO84/04512 PCT Pub. Date Nov. 22, 1984.The powder proof container of this invention comprises end closures and a tubular sleeve that is formed from an initially flat rectangular blank of cardboard having an inner surface layer of weldable material. A pair of opposite side edges of the blank abut one another at a seam extending all along one side of the sleeve. A joining strip, adhered to the weldable material, extends across the butt joint and all along it to seal the seam. Cut lines in the sleeve, extending around it from a tongue at the seam, define a tear strip which is removable by outward pull on the tongue and removal of which divides the container into two parts that are hingedly connected by the joining strip. |
