Meaning
Formal documentation initiates and tracks modifications to a product or process. Submitting an engineering change request allows a moulder to formalise a deviation from the original specification. This document records the proposed adjustment and technical justification.
It governs the transition between revision levels and defines the cut in point for new parts.
Modification Scope
Adjustments to part geometry or resin choice often require detailed administrative oversight. The engineering change request details whether the revision is mandatory or optional. It specifies if the change affects fit or function.
The document includes the impact on the existing inventory and the planned disposal or rework of current stock.
Cost Implication
Financial responsibility for tooling rework or process downtime is a primary driver for these documents. When an engineering change request arises from a design error, the customer usually carries the financial burden. If the change originates from a moulder seeking to improve yield, the cost structure shifts.
Proper documentation ensures all parties agree on the price adjustments before the tool is removed from the press. It accounts for material wastage and the time needed to recalibrate secondary operations.
Official Approval
Official sign off from both quality and production departments is necessary to validate the new process state. The engineering change request acts as a gatekeeper to prevent unverified changes from entering the supply chain. It ensures that every stakeholder understands the risk associated with the modification.
Once approved, the document becomes part of the permanent tool history.
