For OEM engineers and quality teams, choosing a manufacturing partner means finding a team that can understand product requirements, apply the right process, and evaluate the results.
At Redline Plastics, quality is part of how we support custom OEM programs across rotational molding, thick-gauge thermoforming, compression molding, and commercial sewing. Our ISO 9001:2015 certified Manitowoc facility brings quality specialists, engineering support, and advanced testing and inspection tools together to help meet the requirements established for each project.
Redline also ranks among the Top 5 custom rotational molders in the United States when proprietary product sales are excluded from the comparison. That recognition reflects our custom molding work, while our manufacturing capabilities extend across multiple processes for OEM customers.
Quality begins with understanding the product
Each custom OEM project has its own requirements. A molded component may need to meet dimensional, wall thickness, impact, strength, or environmental criteria. A thermoformed part may require specific geometry, fit, and trim details. A compression-molded component may have material and performance requirements, while a sewn assembly may need to meet construction, material, and durability expectations.
Our quality assurance specialists work with customer requirements to help establish an appropriate plan for the project. Bringing engineering, quality, and manufacturing teams into the conversation helps connect product expectations with process planning and inspection.
Quality support across multiple manufacturing processes
Redline works with OEM customers across several custom manufacturing processes:
- Rotational molding for durable, hollow plastic parts in a range of sizes and geometries
- Thick-gauge thermoforming for large, formed plastic components
- Compression molding, including SMC and BMC applications
- Commercial sewing and cut-and-sew manufacturing for sewn products and assemblies
Each process has different materials, production methods, and quality considerations. Our team works to align the testing and inspection approach with the part, process, specifications, and intended application.
Testing and inspection tools for custom OEM programs
Redline’s quality lab includes equipment that can help evaluate materials, part characteristics, and dimensions. Depending on the product and its requirements, capabilities include:
- Falling dart impact tester to evaluate impact resistance
- Magnetic thickness gauge and ultrasonic thickness gauges to measure wall thickness
- Spark tester to help identify through-wall discontinuities
- Dry flow bulk density tester to evaluate powder characteristics
- Durometer to measure material hardness
- Weathering chamber to assess material performance under selected environmental conditions
- 3D laser scanner to capture part geometry and support dimensional analysis
- MTS Insight tensile tester to evaluate material strength and behavior under load
These tools help our teams gather information and evaluate results against project criteria. Not every test applies to every material or product. The appropriate methods depend on the process, specifications, and customer requirements.
ISO 9001:2015 and a documented quality system
ISO 9001:2015 provides a framework for a quality management system built around documented processes and continual improvement. At Redline, that system supports how our teams manage requirements, evaluate processes, and look for opportunities to improve.
Our Manitowoc, Wisconsin facility is ISO 9001:2015 certified and supports rotational molding, thermoforming, and commercial sewing operations. Redline’s quality team also supports OEM programs involving compression molding and other capabilities across the business.
Engineering collaboration from concept through production
Quality planning is most effective when it connects with product design and manufacturing. Early collaboration can help teams review materials, geometry, performance criteria, testing needs, and production considerations before a program moves forward.
Redline’s engineering and quality teams work with OEM customers across design, prototyping, production, testing, assembly, and other value-added services. Our rotational molding, thermoforming, compression molding, and commercial sewing capabilities give customers options for sourcing custom components and assemblies from one manufacturing partner.
Your standards. Our blueprint.
Your specifications guide the work. Redline brings custom OEM experience, an ISO 9001:2015 quality system at our Manitowoc facility, engineering collaboration, and advanced testing and inspection tools to support programs across multiple manufacturing processes.
From rotational molding and thick-gauge thermoforming to compression molding and commercial sewing, our teams work to build a quality approach around what your product needs to do.
Have a custom OEM project to discuss? Talk with Redline’s team about your product requirements, manufacturing process, testing needs, and production goals.
Frequently asked questions
- What manufacturing processes does Redline support for custom OEM programs? Redline supports custom OEM programs in rotational molding, thick-gauge thermoforming, compression molding, and commercial sewing, along with engineering, prototyping, testing, assembly, and other value-added services.
- What quality tests can be performed? Testing depends on the product and its requirements. Redline can evaluate impact resistance, wall thickness, material hardness, tensile properties, weathering, powder characteristics, and part geometry. For testing beyond our in-house capabilities, we work with qualified third-party laboratories.
- Does every part receive every test? No. Testing and inspection methods are selected based on the material, manufacturing process, product specifications, and customer requirements.
- Is Redline Plastics ISO 9001:2015 certified? Redline’s Manitowoc, Wisconsin facility is ISO 9001:2015 certified. It supports rotational molding, thermoforming, and commercial sewing operations.
- What does “Top 5 custom rotational molder” mean? Redline ranks among the Top 5 custom rotational molders in the U.S. when proprietary product sales are excluded from the comparison in the Plastics News ranking.
Learn more on our Frequently asked questions page HERE