FIELD: packing industry.
SUBSTANCE: method is described for manufacturing of container with walls of foamed material, including injection moulding of premold from melt of polyethylene terephthalate (PETP), containing gas that is non-reactive relative to PETP, at partial pressure sufficient for changeover of dissolved gas from polymer into gas phase, where it creates microporous foam structure. Then premould is cooled down to temperature below temperature of polymer softening, premould is repeatedly heated up to temperature that is higher than temperature of polymer softening, and blown moulding of premould is carried out for manufacturing of container.
EFFECT: produced container prevents diffusion of carbon dioxide between layers and has low heat insulation properties.
7 cl, 1 ex
