A new split sprue bar for stack molds reportedly eliminates stringing and drooling and keeps the molding area clear for free drop of parts or easy robot access. Introduced at the recent NPE show, the new sprue bar from Husky Injection Molding Systems, Bolton, Ont., features mechanically operated shut-offs that close off the melt channel when the mold opens and separates the sprue bar. The shut-offs then reopen the channel when the mold comes together. The stem-to-stem shutoff design is said to eliminate drooling, and stems can be actuated individually. It can be used with two- to four-level stack molds and comes in two versions for offset or in-line stack configurations. Three sizes handle up to 1500 g/sec.
Husky Injection Molding
500 Queen St. South Bolton L7E 5S5, Ontario, Canada
Phone (905) 951-5000