Method and apparatus for maintaining a pressure contact seal...

Details Method and apparatus for maintaining a pressure contact seal... Method and apparatus for maintaining a pressure contact seal...

B - Operations, Transporting

29

C

18/682

B29C 45/22 (2006.01) B29C 45/16 (2006.01) B29C 49/22 (2006.01) B65D 1/28 (2006.01)

Patent

CA 1224312

ABSTRACT OF THE DISCLOSURE A free floating runner system wherein runner means, including a runner block and its runner extension, are mounted on their axial center lines on support means, with a gap between the runner structures and surrounding structures to allow the runner structures to freely thermally expand radi- ally and axially. A force compensation system comprised of means, preferably hydraulic, for providing a forward force to the runner structures to offset any rearward force from axial flotation of the runner means and to provide an on-line, effective pressure contact seal between the nozzle sprues and injection cavity sprues. Methods provide an on-line effective pressure contact seal between coinjection nozzle sprues and injection cavity sprues.

451816

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