The invention relates to a container for gastight packing according to the preamble of claim 1.
Hitherto the gastight packing of e.g. carbon dioxide-containing beverages has either taken place in glass containers or in deep-drawn, cylindrical sheet metal containers. These containers have the advantage that they maybe exposed to temperatures of 130.degree. to 140.degree. C. necessary for sterilizing the container content. However, the transportation thereof from manufacturer to filler requires a relatively large transportation volume, because they are not stackable. Tests carried out with plastic containers, e.g. of polyester, which can also be exposed to elevated temperatures without deformation have shown that the gastightness thereof is not adequate to maintain an elevated internal gas pressure for a long period, such as is required for filling with e.g. carbon dioxide-containing beverages. In addition, known used gastight containers overburden refuse disposal systems.
The problem of the present invention is to find a container of the aforementioned type, which is substantially formed from material which can be burnt without leaving any residue and which, whilst having adequate mechanical strength, particularly against permanent deformation, e.g. due to transportation stresses, has an adequate gastightness and also permits a thermal sterilization of its content. In addition, the container must be stackable prior to filling.