Topic Hub
Materials & Resin Guides
Guides to plastic resin selection for injection molding — material properties, glass-filled plastics, medical-grade polymers, sustainable materials, and metal-to-plastic conversion strategies.
The material is the part. Resin selection drives mold steel grade, cycle time, per-part cost, and whether the part meets its functional requirements in the field. These guides help engineers match materials to requirements — mechanical, thermal, chemical, and regulatory.
How to Choose the Right Plastic Resin for Injection Molding →
Commodity vs engineering vs high-performance thermoplastics — a structured approach to narrowing the field from 85,000+ commercial resin grades to the one that fits your part’s function, cost, and processing requirements.
Glass-Filled Plastics in Injection Molding — When and How to Use Them →
PA66-GF30, PP-GF30, PBT-GF30, and beyond — how glass fiber changes mechanical properties, mold wear, warpage behavior, and design rules.
Medical Grade Injection Molding — What You Need to Know About FDA Compliance →
USP Class VI, ISO 10993, and FDA master file requirements for medical device resins. Material documentation, biocompatibility, and change control in regulated injection molding.
Sustainable Plastic Injection Molding — Trends and Practical Steps for 2026 →
Bio-based resins, post-consumer recyclate, energy reduction, and regrind management. What works, what does not, and how to specify sustainability without compromising part quality.
Metal-to-Plastic Conversion Guide — Cost, Weight, and Design Considerations →
When to replace a machined or die-cast metal part with an injection-molded engineering plastic. Strength comparison, rib design for stiffness compensation, and real conversion economics.