Which thermoforming process is right for your part? Vacuum forming, pressure forming, or twin-sheet forming? Each has different capabilities, costs, and use cases. Answer 5 questions and get an expert recommendation with cost implications.
Find the Right Thermoforming Process
5 questions · 30 seconds · Expert recommendation
1. Surface finish requirement?
Understanding the Thermoforming Processes
Vacuum Forming
The most common thermoforming process. Heated plastic sheet is draped over a single-sided mold and vacuum pressure pulls the sheet against the mold surface. Best for large, simple parts with moderate tolerances. Most economical option. Learn more: Vacuum Forming Process.
Pressure Forming
Advanced thermoforming that uses both vacuum AND compressed air (up to 100 psi) on the non-mold side. This higher force pushes the sheet into finer mold detail, creating Class A cosmetic surfaces that rival injection molding. Ideal when surface quality matters.
Twin-Sheet Forming
Two heated plastic sheets are formed simultaneously and fused together while still hot to create a hollow, enclosed part. Used for fuel tanks, industrial pallets, shipping containers, and automotive components requiring hollow construction.
Injection Molding (For Comparison)
Different from thermoforming — molten plastic is forced into a closed steel mold. Best for high-volume (over 10,000/year), small complex parts requiring tight tolerances. See our detailed comparison: Vacuum Forming vs Injection Molding.
Which Process Do I Need?
Use this wizard above for a quick recommendation. For complex projects or when multiple processes could work, contact our engineering team for a free consultation. We’ve been solving this question for 500+ OEMs since 1997.