FIELD: process engineering.
SUBSTANCE: invention relates to fitting of the seal or cap at open end of filled vessel with the first internal pressure and to capping machine to this end. Vessel cap (80) arranged in sealing chamber (84) has to hole to be opened for pressure increase in space (231) above the product to repeated tight closure of the hole. Alternatively, said vessel (1) can comprises panels (801-804) to compensate for pressure drop in its sidewall and/or base.
EFFECT: prevention of deformation and development of shape defect at vacuum gage pressure.
20 cl, 104 dwg
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