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X-Pro® PP 4225 is a medium-impact, high-flow general-purpose polypropylene copolymer made with 98% post-industrial recycled material. It can be used as a low-cost alternative to virgin resin while maintaining comparable quality and processability and is suitable for use in various injection molding applications.

Polymer NamePolypropylene Copolymer

Labeling ClaimsRecycled, Contains PIR Resin, Contains PCR Resin

Processing MethodsInjection Molding

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Identification & Functionality

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Applications & Uses

Plastics & Elastomers Processing Methods


Typical Properties
ValueUnitsTest Method / Conditions
Melt Flow20-30g/10 minASTM D1238 / ISO 1133
Izod Impact Notched (at 23 °C)2.2-3.4Ft lbs/inASTM 256 / ISO 180/A
Flexural Modulus (0.05 in/min)116,000-160,000psiASTM D790 / ISO178

Regulatory & Compliance

Certifications & Compliance
Chemical Inventories

Technical Details & Test Data

General Injection Molding Guide
Barrel Temperature Rear 360° F to 420°F Middle-380° F to 440°F

Front-400° F to 420°F

Nozzle Temperature 400°F – 420°F
Melt Temperature 400°F – 440°F
Mold Temperature 80°F – 140°F
Molding Pressure Boost-500 to 1,500 psi Hold-50 to 75% of Boost

Back-50 to 150 psi

Screw Speed Medium to Fast
Clamp Force

2 to 2.5 tons per square inch part projected area


2 to 4 hours @ 180°F