FAT Checks for a 5 L Extrusion Blow Molding Machine

A buyer should decide before the factory acceptance test whether acceptance will be based on a fixed sample of molded containers or on a defined run at stated conditions, because that choice shapes every check that follows. For a machine rated to 5 L maximum product volume and 90 kg/h maximum PE plasticizing capacity, ask the supplier to state the mold, material grade, cycle time, and parison conditions used for the demonstration, then compare them with your own production intent.

Useful pass or fail checks include: does the machine complete the agreed run without unplanned stops; do the sampled containers meet your written dimensional and weight tolerances; and is wall thickness distribution within limits you set in advance? For clamping, ask how the 70 kN clamping force is verified and whether mold closing and holding are checked under load. For the 75 mm main screw, confirm the plasticizing check is tied to the stated 90 kg/h capacity at defined conditions rather than a single best-case cycle.

Before requesting a quote, confirm with the supplier which checks they will witness and record, what instrumentation and material they will provide, how rejects are counted, and what documentation accompanies the acceptance test.