作者: Andrew W. Christie , Timothy P. Watson
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摘要: Co-extrusion apparatus (10) for manufacturing a laminated plastic film or sheet comprises plug-type layer sequencer (20) including plurality of channels conducting polymer flows; transitional aspect ratio block (24) inducing the flows to converge; and flow velocity profiler cartridge (32) combining form film. In one embodiment, includes tapered selector pin which minimizes mechanical damage when is removed. accordance with another inserts fitting within cavities controlling layers sheet. At least such insert defines lanes an associated cavity so as promote formation differing composition at