| Unfilled, Heat-Stabilized, Homopolymer Polypropylene containing 25% P.C.R. Description: Precolored black Applications: Primary end use is for temperature control air handling housings. Specifications: Meets/exceeds Ford Engineering Material Specification WSH-M4D293-B3. Comments:
Tensile/Izod Change (1000 hrs./140°C): +5/0 %; WHS-M4D293-B3 Specification: ±30/±30; ISO 188
Material Pre-dry: Normally it is not necessary to pre-dry this material. However, if conditions dictate drying to optimize material properties and part appearance then dry in a desiccant dryer at 180°F for 2-3 hours or 160°F for >4 hours.
Manifolds: Maintain manifolds, runners and tips 10 to 20°F above the front one temperature to allow easier filling. (Gate drool is best eliminated using screw decompression rather than reducing tip temperature.)
Back Pressure (Range): 50-100 psi. Injection Speed: medium to slow > depending on surface appearance. Screw Speed: medium. Injection Pressure: Adjust to just above a short shot. Injection Time: Adjust to just above a short shot. Cushion (Range): 0.2-0.5 in. Nozzle Type: Free flowing/Standard.
Some conditions may have to be altered to obtain acceptable parts. Please do not run too cold, molded in stress and rough surface may become a problem. If you must run below melt or temperatures recommended for dimensional precision you may compromise impact and aesthetics. Retest parts to confirm performance. Data provided by Ferro Corporation - Specialty Plastics Group. A. Schulman has acquired the Ferro specialty plastics business. |
