Screen for selectively perforating thermoplastic film

Screen-change device for extruders

Screen/diverter changing mechanism for extruders

Screening device for purifying plastic melts

Screw extrusion press having barrel temperature control means

Screw linkage structure for use in an injection molding machine

Screw-in-plunger injection apparatus

Sealable discharge die for thermoplastic

Sealing plate for a spinnerette assembly

Segmented barrel extruder feeder device

Segmented piston face plate assembly for patty forming apparatus

Segmented spacer ring

Segmented wheel disk for extrusion blowmolding apparatus

Self-adjusting mold backplate

Self-centering molding apparatus

Self-cleaning mold valve for a molding system

Self-leveling stamper module

Self-releasing mold

Self-sealing compact spinneret for a melt spinning process

Shaping apparatus for an extrusion system