FIELD: manufacturing technology.
SUBSTANCE: device comprises means of pumping and vacuum chamber 6 in form of bell with sealing collar 12 and cover 3 clamping facility. At that, chamber 6 includes cover 3 preliminary pressing facility including membrane 9 or bellows installed at upper chamber wall 6 and forming sealed area between membrane 9 or bellows and upper wall of chamber, and discharge assembly made in form of channel 10 with valve 7 for feeding air between upper wall of chamber 6 and membrane 9 or bellows, and area of chamber 6 on other side of membrane 9 or bellows is connected with pumping facility.
EFFECT: invention provides quality improvement.
3 cl, 1 dwg
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