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US 2003/0190441 A1Published application
Paper container
OwnerHisao Takahashi, Kazuhiko Sase +1inventors
InventorsHisao Takahashi, Kazuhiko Sase, Hideki Okude
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OwnerHisao Takahashi, Kazuhiko Sase +1inventors
InventorsHisao Takahashi, Kazuhiko Sase, Hideki Okude
Estimating the term…
A paper container has synthetic resin layers (3) and (4) constituting at least the outermost and innermost surfaces of a laminated structure with paper as a base material (1), the base material (1) being provided with a through-hole (2) serving as a liquid take-out port, in which the paper container is of laminated construction in which the through-hole (2) is covered from inside by a layered material of at least two layers made of an integration of the synthetic resin layer (4) or (10) and a thin paper layer (8). The rigidity of the thin paper layer (8) is imparted to the synthetic resin layer (4) or (10) with which the thin paper layer (8) is integrated. This suppresses the elongation of the synthetic resin layer (4) or (10) to facilitate the piercing of the through-hole (2) portion with a straw or the cutting-off of the through-hole (2) portion.
A paper container characterized in that the paper container includes a laminate structure having a base material made of paper, at least outermost and innermost surfaces of the laminate structure being constituted by synthetic resin layers, respectively, the base material being provided with a through-hole serving as a liquid take-out port, wherein the paper container is of a laminate construction in which the through-hole is covered from inside by a layered material of at least two layers consisting of a synthetic resin layer and a thin paper layer integrated to each other.
A paper container characterized in that the paper container includes a container material of a laminate structure having a base material made of paper, at least outermost and innermost surfaces of the laminate structure being constituted by synthetic resin layers, the container material being provided with a first through-hole serving as a liquid take-out port, a lower plate made of a synthetic resin provided with a second through-hole of a size equivalent to or smaller than the first through-hole being bonded to the surface of the container material with the second through-hole of the lower plate being positioned in the first through-hole formed in the container material, and an upper plate having an engaging projection which is fitted in the second through-hole of the lower plate from a surface side of the container material, and a synthetic resin film bonded to a periphery of the first through-hole and the top surface of the engaging projection of the upper plate from a rear side of the container material to define an opening device, wherein the synthetic resin film comprises a thin paper integrally laminated thereto to form a layered material comprising two or more layers.
Dependencies are inferred from the claim text.