FIELD: containers in food industry. SUBSTANCE: circular chamber 6 is made in neck 2 of vessel 1 housing. Plug 9 has circular wall 10 and is freely displaced in circular chamber 6. Longitudinal ribs 11 are made on inner surface of the circular wall. EFFECT: simplified design. 3 cl
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Authors
Dates
1994-08-30—Published
1992-06-16—Filed