About Westec Plastics

Experienced Plastic Injection Molders

Seeking Custom Plastic Injection Molding in CA? Choose Westec.

For over 50 years, Westec has been providing custom injection molding services from our Livermore, CA facility

Since 1969, Westec Plastics Corporation has set the standard for the custom plastic injection molding industry. We specialize in tight tolerance mold manufacturing and production. Quality and customer service are our top priority and 100% customer satisfaction is our goal. Our dedication to both quality and our customers is why Westec Plastics is the leading Bay Area molding company.

Westec’s engineering design team can take your project from concept to design by supporting customers with design for manufacturability and mold flow analysis. Westec has a full-service tool room that can assist you with mold design, prototypes, and mold manufacturing.

Our 23 state-of-the-art injection molding machines range in size from 28 to 610 tons, including 3 two-shot injection molding machines, all of which are integrated into our Real Time Monitoring System. This allows Westec to track mold performance and efficiency during production. ISO Class 8 clean room facilities are also available for medical and other applications that require an extra degree of cleanliness.

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Westec's ISO Class mobile clean room for medical injection molding and secondary operations

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Westec's experienced plastic molders working on the manufacturing floor

Westec: Delivering High-Quality Plastic Parts Since 1969

Recent Westec Company Milestones:

2020 Improvements & Additions

  • Extended our building by 9,200 sq/ft and brought our total facility square footage up to 46,080
  • Remodeled 2nd Ops to include open space and additional clean room capabilities
  • Remodeled warehouse into new space
  • Two-shot molding capabilities implemented in 2nd quarter
  • Implemented cobots, automation, and additional robots

2019 Improvements & Additions

  • Added Class 7 clean room capabilities for secondary operations
  • Purchased a Keyence IM-7030T Instant Measurement System
  • Invested in a Branson Mini II Linear Vibration Welding Machine
  • Added a Branson 2000Xdt 15KhZ, 2200 W Ultrasonic Welder
  • Procured Minilase XL Laser Engraver
  • Obtained a KP08 Cupslide Pad Printer with extended pad reach for larger projects
  • Increased our Class 8 molding clean room to 989 sq/ft including a full gowning room

Westec Prior Year Accomplishments

  • 2018 – Achieved ISO 13485:2016 certification
  • 2018 – Procured custom built roll printer for tight tolerance pad printing
  • 2018 – Purchased an Arburg molding machine (88T)
  • 2017 – Purchased a 6-color pad printing machine
  • 2016 – Invested in two molding machines (610T Milacron, 110T Milacron)
  • 2016 – Installed an ISO Class 6 secondary operations clean room
  • 2016 – Added a Mitutoyo CMM and Starrett Optical Comparator
  • 2015 – Invested in an electric Sumitomo injection molding machine (385T)
  • 2014 – Purchased a local competitor in a strategic acquisition
  • 2014 – Expanded our in-house tool room with a Makino F3 Vertical Machining Center and an Agie Charmilles FORM 20 EDM
  • 2014 – Invested in four injection molding machines. Two hydraulic Van Dorn machines (85T & 170T) and two electric Sumitomo machines (both 198T).
  • 2012 – Added an additional 14,000 sq/ft of manufacturing and warehouse
  • 2000 – Original Registration ISO 9001 October 17,2000
  • 1997 – Westec Plastics relocated from San Jose to Livermore, California.

Providing Our Customers with High-Quality Plastic Parts Since 1969

In 1969, our founder Paul Biery returned from the Vietnam War to start Westec Plastics with his wife Karen. Paul was a toolmaker by trade, and wanted to be able to sample his tools in-house. He purchased his first machine out of a farmer’s barn in Gilroy, California that year – pretty soon, Westec Plastics was born.

Westec is celebrating over 50 years in business! Learn more about it here.

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This is where Westec started in July 1969
Westec Plastics
Early Westec Plastics
Westec Plastics Corp original machining center in Bridgeport with 1969 Dodge Charger and 1960 red Ford truck parked in front
The red truck was used to move our first machine to Westec, Machine #1, in July 1969.

Want to learn more about us?

Meet the Westec Team

Partner with Westec for Better Custom Plastic Injection Molding in CA

What Our Customers Say

  • I love the team. They’re very friendly which is their best attribute. They’re easy to work with – down to earth and deliver with a family business feel, that’s really a strength of theirs. They’re well-rounded in terms of balancing quality, processing, and competitive in all those aspects.

    Sara N, Co-founder, Medical Device Company

  • A quick reply or RFQ for our early stage development is important. We find companies that support our needs with the shortest lead times for tooling and components. Westec fills this need for us. Their professionals ensure they produce high quality parts and they work closely with us to ensure we are satisfied with service, documents, and components. They’re a pleasure to work with.

    Victor B. – Bio Tech Diagnostics Company

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