DEVICE FOR COATING HOLLOW BODY, ESPECIALLY PLASTIC BOTTLE, BY MEANS OF HIGH VACUUM RANGE AND LOCK

摘要

PROBLEM TO BE SOLVED: To provide a lock system capable of continuously actuating without maintenance, in which seals are subject to only little abrasion. SOLUTION: The lock system comprises a first lock 23 and a second lock 25. It is also provided with an intermediate vacuum chamber 22. In the intermediate vacuum chamber 22, pressure between atmospheric pressure and pressure of a high vacuum chamber 20 is formed. The first lock 23 connects the atmospheric air to the intermediate vacuum chamber 22, and the second lock 25 connects the intermediate vacuum chamber 22 to the high vacuum chamber 20. COPYRIGHT: (C)2005,JPO&NCIPI