... layers blow molding machine ranging from 1000L,2000L,3000L, to 5000L.These machines can produce civil barrel ,220L double L-ring barrel,plastic ... evenly,then improve the quality of products and prolong the mould's life; (6).Opening and closing mold is controlled by ... , and shorten production cycle; (10).The design of the movable mould-clamping which can move back and forth makes it convenient ...