• Commitment To Quality
  • Finishing & Assembly
  • Injection Molding
  • Profile Extrusion

We have 35 years of experience with continuous value-added features incorporated over the years.

Thirty-five years ago, Custom Plastics, Inc. purchased its first injection molding press. Since then, our team has been committed to providing unmatched quality at affordable prices in our injection molded parts. We have recently installed new injection molding machines and introduced new processes to increase our capabilities. Our 99.9% on-time delivery rate and 99.8% part acceptance rate ensure the lowest lead times, resulting in a higher bottom line for our valued customers. Our commitment to producing high-quality parts and delivering those parts on time has helped us earn the trust of our loyal customers and establish a reputation as one of the Midwest's premier suppliers for injection molded parts. We look forward to learning more about your next project and using our experience in this industry to help your business grow.

  • ISO 9001:2015 Quality System in place to ensure process is consistent and reliable.
  • Small tonnage (55 ton) to Large (720 ton) presses with a good cross section of machine/shot size offerings for all markets and industries, as indicated in the Machine List.
  • Glass screw and barrel capabilities
  • Capacity to process a multitude of materials ranging from the common to the engineering grade variety, as indicated in the Material Capability List.
  • Proficient in Gas-Assist molding, allowing us the capability to design a heavy-wall product that is durable and cost-effective.
  • Silo/rail car capability makes volume purchasing a possibility, which offers our customers the benefits of economy, reduced lead times, delivery and consistency in processing their products.
  • Project Management and comprehensive design capabilities separate us from the average OEM manufacturers; designing and building prototypes quickly to evaluate cosmetics or functionality prior to initiating a major tooling expense is within our capability.
  • Value-added services that set us apart from our competition, such as assembly, special packaging, drop ship, pad printing, ultrasonic welding, etc. are offered to make your project complete at our one-stop shop.
  • Experience with servicing a multitude of industries such as telecommunications, residential and commercial lighting, housewares, and consumer products allows the cross-functional experience to assist all customers in meeting their plastic objectives.
  • Our mold transfer program makes it simple for you to seamlessly transfer your tools to us.  After an initial assessment, we will form a partnership to ensure the transfer will go smoothly and evaluate whether any additional equipment or safety stock is needed.  Everything will be put into writing to protect the interest of all companies involved. 

Machine List

Quantity Press Size Shot Size Tie Bar
Two (2) 60 Ton
2.3 & 3.0 12.20 x 12.20
Two (2) 90 Ton
4.6 14.80 x 14.80
One (1) 120 Ton
8.2 16.10 x 16.10
One (1) 150 Ton
6.5 18.10 x 20.00
Two (2) 170 Ton
15.9 20.00 x 20.00
Three (3) 190 Ton
16.0 20.00 x 20.20 (2) & 20.00 x 22.00
Five (5) 310 Ton
19.3 (4) & 40.9 24.00 x 24.00
One (1) 390 Ton
40.9 27.90 x 27.90
Four (4) 500 Ton
62.8 (3) & 77 31.80 x 31.80 (3) & 34.20 x 34.20
Two (2) 610 Ton
102 33.80 x 33.80
One (1) 720 Ton
186 38.50 x 38.50


To upload a molding project file, click here

Material Capability List

HIPS* Polystyrene/GP Styrene*
ABS* Acrylic
Polycarbonate* Noryl
Polyethylene* Valox
Glass Filled Nylon* Polypropylene*
Ultem Nylon*
* denotes high use