| 摘要 |
A plastic container with variable volume of housing comprises a housing equipped with a folded portion with lower closed and upper open ends, while the upper end is equipped with a filling neck with means for its closing, in addition, a folded portion is made in the form of corrugations, which are made in the form of alternately arranged and connected to each other annular surfaces, the upper portion of the rings of which is convex and the lower portion is concave, while at the intersection line of these surfaces is provided a hitch in the form of a hook forming a whole with the upper convex surface of each corrugation. |
