Redline Plastics is Your Scalable Innovation Partner.
Rotational Molding. Vacuum Forming. Manufacturing. Product Development.


Redline’s rotational molding clients are among the most respected and innovative companies in their industries.

It’s the dedication of our designers and engineers that successfully take their vision from concept to prototype, to production, to on-time delivery. Redline Plastics’ focus on quality can be fully understood with a visit to our new 117,500 sq ft manufacturing plant in Manitowoc, Wisconsin. This plant has been designed from the ground up to deliver high-quality products unlike anyone else in the industry. The plant is extremely well lit to and laid out for space to work and keep parts clean and damage-free. In addition, Redline Plastics is ISO-9001:2015 certified and it continually improving our processes to become more efficient to deliver you a better product for a lower cost.

Our total support is a touchpoint in everything we do, making us a trusted partner in providing quality, cost-sensitive products. Let’s see what we can do for you.

Redline has the resources and capabilities to help succeed with your next project.

In addition to rotomolding, we are also experts in vacuum forming, line bending and 5-axis CNC routing.

Common Materials:

  • LLDPE – Linear Low Density Polyethylene
    • Most common material used for items such as cargo boxes, furniture bases, water tanks, etc. This material provides a high level of durability through more flexible properties and UV resistance.
  • HDPE – High Density Polyethelene
    • This is a harder plastic that is less flexible. It is also highly UV resistant.
  • Crosslinked Polyethelene
    • Used for diesel and gasoline tanks
  • Nylon
    • Used for hydraulic fluid tanks
  • PVC
    • Used for items that need to flex, like dock bumpers and seat bellows.

Contact Redline Plastics

Please complete the form below and Redline will provide you a quote on your project.

Redline’s capabilities will help you design, prototype, and produce market-leading innovative components to increase the value of your products.

Rotational Molding examples