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Welcome to KASO


Celebrating 50 years since 1962KASO Plastics is a full-service custom plastic injection molder in the Portland Vancouver metro area.

We invite you take advantage of the many benefits you can receive when you manufacture with KASO. Our state-of-the-art injection molding equipment and skilled plastics engineering and plastics manufacturing staff ensure all of your high quality, close-tolerance injection molded products are manufactured at globally competitive prices. Find out how KASO's commitment to quality, and our reputation for exceptional service, have enabled us to maintain long-lasting partnerships with our customers in Automotive, consumer products, Military and Medical markets.

Injection Molding Services

Our 50,000 sq. foot state-of-the-art facility houses injection molding machines ranging from 55 to 610 tons. The molding machines are equipped with 3-axis servo robots for improved part quality, process consistency, and labor reduction. Fully mobile auxiliary equipment, central drying system, and overhead cranes keep KASO equally prepared for long and short run production. Learn more about our injection molding services that include gas assist injection molding, in-mold decoration, structural foam molding and more.

KASO Plastics Injection Molding Services, Long and Short run production

Engineering Services

Our comprehensive, seasoned engineering team utilizes our Early Supplier Involvement (ESI) process to bring design for manufacturability, mold design and mold construction,mold flow analysis, material selection experts, cost reduction concepts and many more advantages to your design long before it is completed. With years of practical experience combined with constant focus on finding fresh, new ideas, the seasoned KASO staff welcomes new challenges. More information on KASO’s engineering capabilities and services.

KASO Plastics Engineering services, mold flow analysis, material selection

Quality Assurance & Control

Quality Assurance: KASO employs a full-time Management Representative to oversee and manage the effectiveness of our quality system. With a strong company culture of utilizing systems for the benefit of KASO as its customers and a strong internal auditing system KASO Plastics has maintained its ISO registration since 1999.

Quality Control: Our investment in a fully equipped metrology lab, experienced technicians and inspectors that operate within a strong quality system continues to yield excellent results.

"KASO is dedicated to meeting customer requirements, our goals are to continually improve quality, on-time delivery, and to reduce costs."

Customer Focus

We are dedicated to exceeding customer expectations regarding the ease of doing business, quality products, and quality of personal contacts. Our state of the art injection molding facility, pictured below, operates 24 hours under the guidance of our skilled and experienced workforce, ensuring your project receives the focus it deserves.

KASO Plastics injection molding customer service, quality assurance and control