OEM quality teams ask contract molders for injection molding PPAP or PPAP-like packages — even outside automotive — because production release without documented capability is how line-down happens. Define deliverables before first shot, not after scrap appears.
Core documents for contract manufacturing release
- FAI / First Article Inspection — full dimension report on initial production setup
- Control plan — CTQ checks, frequency, reaction plan
- Material COC — resin grade, lot, moisture if hygroscopic
- Process parameters — approved window for temperature, pressure, cycle
- MSA / gauge records — when tight tolerances drive gage R&R
PPAP levels — practical mapping for industrial OEM
| Program risk | Suggested package depth |
|---|---|
| Internal cover, wide tolerances | FAI + material COC + basic control plan |
| Automated assembly, tight fit | Full dimension FAI + SPC on CTQs + change log |
| Safety-adjacent / flame rated | Material cert + process freeze + periodic revalidation |
| Automotive tier supply | Formal PPAP level per customer requirement |
Sample vs production — the documentation gap
Buyers report T1 samples from optimized setup, then production on different press or operator skill. Contract manufacturers should document machine ID, mold version, and resin lot for FAI — and require re-FAI after significant process or tooling change.
What to specify in purchase terms
- Inspection standard (e.g. ASME Y14.5 for drawing interpretation)
- AQL for cosmetic vs structural defects
- Corrective action timeline when CTQ fails
- Retention period for mold maintenance and batch records
Pair quality docs with upstream DFM review — documentation cannot fix unmoldable geometry.
FAQ
Is PPAP only for automotive?
Origin is automotive, but industrial OEMs adopt the structure for any high-risk launch.
Who pays for FAI?
Usually included in tooling or first-lot pricing — clarify in quote.
Can we audit the molder’s QMS?
Yes — schedule audit or third-party inspection before production steel on critical programs.
Next step: Define your quality package in the next contract manufacturing RFQ.