FIELD: packaging industry.
SUBSTANCE: composite packaging comprises a glass vessel and a cap, sealed thermally on the edge of the vessel. The edge is preliminary treated with metal oxides and/or salts. The cap comprises at least one carrier layer and the lower layer of the thermally sealed polymeric material having a melting temperature exceeding 115°C at which the unsaturated carboxylic acid is grafted.
EFFECT: increasing tightness of the closing of the vessel.
20 cl, 2 dwg, 1 ex
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