A sizer assembly for providing a shaped polymeric article in an extrusion process comprises a sizer body having a product profile channel corresponding to the shaped polymeric article formed therethrough. The sizer body comprises a plurality of cooling liquid inlet slots forming an opening substantially around the product profile channel and a plurality of vacuum slots forming an opening substantially around the product profile channel for removing cooling liquid expelled from said cooling liquid inlet slots.

 
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> Apparatus and methods for managing molds and forming transverse corrugations and other shapes in extruded tubular polymer melt parisons

> Apparatus for producing multi-component liquid filaments
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