Supplier's Category: All Vacuum Forming: Single-sided sheet forming using vacuum pressure over a mold
Vacuum forming heats a plastic sheet and pulls it against a single-sided mold using vacuum pressure, the simplest and lowest-cost thermoforming variant. It suits shallower, less-detailed parts than pressure forming, with correspondingly lower tooling investment.
Vacuum forming sits at the low-tooling-cost end of plastic sheet forming — a good starting point for prototypes or lower-volume parts before considering pressure forming or injection molding.
- Prototyping and low-volume production: fast, inexpensive tooling
- Shallow-draw parts: trays, panels, simple enclosure shells
- Point-of-purchase displays and packaging inserts
Related terms: single-sided vacuum forming, mold draft angle, sheet material selection, forming depth limitations, trim tooling, textured mold surfaces, wall thickness variation in deep draws
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What to check before choosing this process
Vacuum forming’s main limitation is depth and detail — verify it actually fits your part before tooling.
Questions to ask
- Can they confirm your part’s draw depth is achievable without excessive wall thinning
- Would your part be better served by pressure forming for finer surface detail
- What trimming method do they use, and is it included in tooling cost