Custom Compounders Since 1973

Polifil® RP-PP

Polifil RP-PP

Reprocessed Polypropylene

Polifil® RP-PP reprocessed polypropylene has the highest stiffness of the commodity olefin resins, while retaining sufficient impact properties for many applications. Due to its low cost and low density, polypropylene use has been expanding rapidly, and common uses now include injection molded articles, fibers, packaging films, and extruded sheet and profiles. Polypropylene is widely used in injection molding for housewares, appliances, and automotive parts. High flow grades are spun into fibers, and molded into thin wall containers, cups, and lids. Moderate flow resins are common in general injection molding and cast films. High molecular weight, low flow grades are extruded into sheet and profiles, and blow molded into automotive parts and recreational goods.

The property values listed in the PDF document(s) have been obtained using laboratory controlled test methods. They are offered without guarantee since conditions under which the product is used are beyond our control. Mold shrinkage is intended as a guide only, as specific shrinkage is affected by part design, mold design and molding conditions. Therefore, The Plastics Group disclaims any liability for loss or damage incurred in connection with the use of this product.

Reinforcement content (%) TPG WI -
Specific gravity D 792 0.90
Melt flow 230/2.16 (g/10 min) D 1238 15*
Water absorption, 24 hours (%) D 570 nil
Mold shrinkage - 1/8" specimen (in/in) D 955 0.020
Mechanical @ 73°F    
Tensile strength (psi) D 638 4,500
Elongation @ yield (%) D 638 11
Elongation @ break (%) D 638 50
Tensile modulus (kpsi) D 638 200
Flexural modulus, tangent (kpsi) D 790 180
Flexural strength (psi) D 790 6,000
Izod impact, notched (ft-lbs/in) D 256 0.50
Gardner impact, 1/2" tup (in-lbs) D 5420 24
Hardness, shore (D-scale) D 1415 70
Deflection temperature, 66psi (°F) D 648 200
Deflection temperature, 264psi (°F) D 648 120
* melt flow may be specified