| 30% Fiberglass/Mica Reinforced, Chemically-Coupled, Heat-Stabilized, Homopolymer Polypropylene containing 25% P.C.R. Description: Precolored black Applications: Primary use is for air cleaner housings and integral structural ducts. Specifications: Meets/exceeds Ford Engineering Material Specification WSS-M4D941-A1 Comments:
Tensile/Izod Change (1000 hrs./140°C): +5/-8%; WSS-M4D941-A1 Specification: ±25/±25; ISO 188
Filler Content: 30.5% ;WSS-M4D941-A1 Specification: 28.0-32.0; ISO 3451/1A
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): 20-50 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- Weigh pars for consistent packing. Cushion (Range): 0.2-0.5 in. Nozzle Type: Free flowing/Standard.
Some conditions may have to be altered to obtain acceptable parts. back pressure must be minimized to retain fiber length and optimize performance. Please do not run too cold, molded in stress & rough surface may become a problem. If you must run below melt or temperature recommended for dimensional precision you may compromise impact and esthetics. Retest parts to confirm performance. Data provided by Ferro Corporation - Specialty Plastics Group. A. Schulman has acquired the Ferro specialty plastics business. |
