With an annual capacity of over 400 million pounds, Washington Penn Plastic Co., Inc. is the largest compounder of custom polyolefins in North America. We have been providing material solutions to our customers for over 45 years. Today, we offer mineral-filled and glass-reinforced polypropylene compounds that compete with higher cost engineering resins. We supply thermoplastic olefin compounds that offer a complete range of strength, toughness, and flexibility. 
All of our custom compounds can be manufactured in natural or pre-colored to meet your specifications. We provide our customers with a wide variety of polypropylene and polyethylene neat resins. Finally, we produce color concentrates in hundreds of custom colors as well as post-consumer recycled polypropylene and polyethylene materials.
At Washington Penn Plastic Co., Inc., we are driven by the needs of our customers. Our goal is to deliver cost effective material solutions with industry leading speed, quality, and reliability.

WPP Facilities:
• 4 Production and Warehouse Sites
• Rail Sidings
• Bulk Handling and Storage
• Over 400,000 sq. ft. of Combined Warehouse Storage


All of our facilities are equipped to handle bulk and packaged materials according to your specifications and requirements. Our warehouses, silos, and rail sidings provide ample space for raw and finished material storage. Our facilities furnish the resources which enable us to reduce lead times and costs, thereby adding more value to your bottom line.

WPP Processes:
• Single Screw Extruders
• Co- & Counter-Rotating Twin Screw Extruders
• Internal Batch Mixing Extruders
• Continuous Mixing Extruders
• Material Blending Capabilities

Our production equipment makes a critical difference. The variety of production options allows us to match each product to the right process. That means that we are supplying you with the highest quality, most consistent product possible.
Our equipment also gives us optimum flexibility in scheduling, which results in the shortest lead times in the industry.