Pass/Fail Checks for a Plastic Injection Mold FAT
Buyers can turn a custom crate mold FAT into clear pass/fail checks by tying each test to the PP part, the 400 × 300 × 300 mm reference size, and agreed sampling rules.
For a custom crate mold for PP, decide before the factory acceptance test whether pass/fail will be judged on a single shot or on an agreed sample of consecutive shots. That choice shapes the whole test plan, so state it in the RFQ.
Ask the supplier to define acceptance checks that a buyer can witness. Useful candidates include: does the mold close and open without interference; do the cavity and core match the approved drawing; does the first-shot part match the agreed 400 × 300 × 300 mm reference dimensions within tolerances you set; and are there visible short shots, flash, sink marks, or ejection damage on the PP parts? For each check, agree the method, the sample size, and who records the result.
In a demonstration, request a run of consecutive cycles and record which shots pass or fail. Ask how the supplier will handle a failed check: rework, retest, or hold shipment. Treat catalog values such as the 400 × 300 × 300 mm part size as reference only until confirmed for your mold.
Before requesting a quote, confirm with the supplier which checks they will run, the sampling and retest rules, the measurement method for the crate dimensions, and what documentation will accompany the FAT results.