Coex LLC

2900 N. Zuehlke Drive
Suite B
Appleton, WI 54911


COEX LLC is dedicated to manufacturing the highest quality 3D printing materials in the industry. We are located in the heart of the Midwest in Appleton, WI, USA. We adhere to strict quality standards, ensuring optimal performance and premium resolution of all our 3D printing materials. Our advanced extrusion equipment and laser micrometers ensure quality and consistency of our 3D printer filament. We use only prime virgin resins, colorants and processing additives to ensure our customers can rely on COEX 3D filament. 

COEX recognizes that 3D printing innovation is constant. That’s why we take great pride in advancing 3D printer material technology through polymer science research and innovation. Our team can accommodate custom projects and work directly with customers on troubleshooting and new product development.

Image result for 3d printer

Plastic coil binding is a popular and inexpensive way to create beautifully finished products. At COEX COIL, we manufacture filament and plastic spiral binding coils in-house, offering 45 different colors and a variety of sizes. Our spiral binding material is flexible, durable and one of the most popular ways to bind documents.   Image result for plastic coil

Whether you’re looking to place a plastic coil order or would like to purchase coil filament for your own bindery, we have the plastic coil product to meet your needs.



Bob Rutten
Director of Operations


Sheri Hartzheim
Office Manager

Started in:


  • The New North

Core Competencies:

Coex is a Plastics Extrusion Company.  We extrude several resin compounds to make filament (think of it as plastic thread) for 3D Printers.  We also extrude PVC to make filament that is converted into plastic coils used in the Printing/Publishing market.

3D Printer Market - Coex extrudes several 3D Printer Filaments including; PLA, ABS, PETG, HIPS, TPE and Nylon. 

Book Binding Market - Coex extrudes PVC filament for plastic coil manufacturing. These plastic coils are used by the Printing Companies and Book Binderies across the US to bind books, manuals, calendars, etc..   

Estimated Annual Gross Sales:
$0 - 10 Million

Supplier to the Defense Industry:
No, have never supplied to the defense industry, but would be interested in doing so

Number of Employees:
0 - 10

Import: No

Export: Yes

Export Countries: Canada, UK


  • Automotive
  • Aviation and Aerospace
  • Defense Industry Supply Chain
  • Energy Systems
  • Food and Beverage
  • Forest Products-Packaging-Lumber
  • Foxconn
  • Lakeshore Manufacturing Cluster
  • Marine Manufacturing
  • Water Industry - Technology or Manufacturing
  • Wisconsin Wind Works


  • None

Markets Interested in Serving

  • Advanced Manufacturing
  • Aviation and Aerospace
  • Food and Beverage (FAB)
  • Medical Devise Manufacturing


  • Additive Manufacturing / 3D Printing
  • Manufacturing: Plastic Injection Molding and Extrusion

Interested In Categories:

  • Additive Manufacturing / 3D Printing
  • Components, Parts and Hardware
  • Engineering, Scientific and Technical Services
  • Health Care Services (Wellness, Health care providers and suppliers)
  • Manufacturing: Plastics and Composites, Extrusions

Seeking local sources for:

  • Manufacturing: Plastics and Composites, Extrusions

Manufacturing Tier

  • Tier two companies are the key suppliers to tier one suppliers, without supplying a product directly to OEM companies. However, a single company may be a tier one supplier to one company and a tier two supplier to another company, or may be a tier one supplier for one product and a tier two supplier for a different product line.

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