Stern Companies | Your single source for polymer componetsStern Companies specializes in Custom Plastic and Rubber Molding and Assemblies

Rotomolded Plastic Tool Case Assembly for the Material Handling Industry

Rotomolded Plastic Tool Case AssemblyProject description:

Stern Industries, a company known for its quality services and cost-effective solutions, offers extensive expertise in rotomolding. We help customers in a variety of industries to take their products from concept to reality. An example of this was when we were commissioned by a material handling industry client for the rotational molding of this plastic tool case.

The case, designed to be lightweight and easily carried by military personnel, was created using a unique process. After the rotomolding process, spray foam insulation was used to enhance the durability of the case while maintaining a manageable carrying weight. The box measured 24” long x 17.40” wide x 10.150” high, with the lid measuring 22.23” long x 16.05” wide x 0.75” high, and a total weight of 14 lbs.; it also met tolerances of ± 0.100”. The case was made of linear low density polyethylene (LLDPE) and Ethafoam, and was finished with shot peen at 80 PSI.

Following completion of the cases, we performed various inspections to ensure the customer’s specifications were achieved, including the use-of fit, form, and function gauge inspections, as well as light inspection of voids in the foam. We currently manufacture over 400 of these cases for this customer annually. At Stern Industries, our goal is your satisfaction. Contact us today to learn about all of our capabilities.

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Custom Plastic Tool Case Rotomolding Project

Precision Plastic Tool Case Injection Molding Project These tool cases are made to be light weight and easily carried by military personnel.
Capabilities Applied/Processes
Rotational molding
Equipment Used to Manufacture Part Ferry 280
Overall Part Dimensions Box
  • Length: 24.00”
  • Width: 17.40”
  • Height: 10.150”
  • Length: 22.23”
  • Width: 16.05”
  • Height: 0.75”
Weight: 14 lbs.
Tightest Tolerances ± 0.100”
Material Used Linear Low Density Polyethylene (LLDPE)
Material Finish Shot Peen 80 PSI
Additional Facts We use a unique process including spray foam insulation equipment to enhance the durability of the cases while maintaining a manageable carrying weight for the use of the end product. This case and lid are molded, foamed, assembled, and palletized all with precision and quality personal who take great care to make sure the product is protected throughout the process all the way to our customer.
In process testing/inspection performed Use of fit inspection
Form inspection
Function gages inspection
Light inspection of voids in foam
Industry for Use Material Handling
Volume 400+ per year
Standards Met Customer Specifications, 2D CAD Drawing
“ARM” Standard Rotomolding Tolerance
Product Name Snap-On Tool Case

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