Preserve What Actually Happened
Record the actual machine, material, thermal and process condition associated with the samples reviewed during that trial.
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T0–T2 Trial Documentation
An injection molding trial record should document what actually happened during a specific trial: the tool and revision used, machine and resin conditions, actual process data, cavity-identified samples, CTQ results and the changes made before the next engineering review.
Trial Record Purpose
A trial record creates a traceable link between the molding condition, the samples produced, the measured results and the engineering changes made during a specific T0–T2 trial.
Record the actual machine, material, thermal and process condition associated with the samples reviewed during that trial.
Link cavity-identified samples and CTQ results to the condition used, then preserve what changed and the observed result for comparison.
Create or update the record when the trial stage, tool revision, machine, material or engineering condition changes in a way that affects evidence comparability.
Core Template Fields
The record should connect trial identity, actual molding conditions, cavity-specific results and engineering changes in one traceable document. Record actual values where available rather than relying only on nominal machine setpoints.
| Field Group | What to Record | Why It Belongs in the Trial Record | Evidence Type |
|---|---|---|---|
| Project & Traceability | Project or part ID, mold ID, tool revision, trial stage, machine ID and cavity identification. | Links every reviewed sample and result to the correct tool, revision and trial event. | Traceability record |
| Material Preparation | Resin grade, lot, regrind ratio where applicable, drying temperature, drying time and available moisture result. | Shows the material condition associated with the samples being evaluated. | Material actuals |
| Mold & Machine Setup | Relevant clamp, ejector, hot-runner, mold-temperature and other setup conditions used for the trial. | Preserves the setup associated with the recorded molding result. | Setup record |
| Thermal & Filling | Actual melt and mold temperatures, injection stages, fill time and V/P transfer position or trigger. | Connects fill behavior and reviewed samples to the actual molding condition. | Process actuals |
| Hold, Cooling & Weight | Hold pressure and time, cooling time, cycle actual and cavity-specific part weight where relevant. | Provides comparable evidence when reviewing changes between trial conditions. | Condition result |
| CTQ Results | CTQ identifier, nominal or specification, actual result, cavity ID and review status where required. | Links the measured result directly to the sample and condition that produced it. | Measurement result |
| Adjustment History | Before condition, change made, reason, after condition, observed result and related issue reference where applicable. | Preserves the engineering sequence between one reviewed condition and the next. | Change history |
| Reviewed Operating Range | Target or reviewed limits only when they have been established by the applicable engineering study or approval process. | Allows the record to reference an established range without claiming that the trial record itself validated that range. | Referenced limit |
Actual Process Evidence
Machine setpoints describe the intended setup, but they do not always describe the actual condition associated with the reviewed sample. A useful trial record therefore captures measured or observed actual values where they are available and relevant.
Record actual melt or mold-temperature evidence where measured, rather than assuming controller settings fully represent the material and tool condition.
Record the fill time, V/P transfer behavior and relevant pressure or timing values used for the sample so later trials can be compared against the correct condition.
Link cavity-specific weight, dimensional or other CTQ results to the actual recorded condition so engineering changes can be evaluated against comparable evidence.
Record Completion Logic
Complete the record in the same sequence that the evidence is generated. The goal is to preserve which condition produced which sample, what changed and what happened afterward, without overwriting earlier trial evidence.
Start with the trial stage, mold and drawing revision, machine, cavity identification, resin lot and other information needed to identify the specific run.
Capture the relevant actual process values and link retained samples, part weight or CTQ results to the condition under which they were produced.
Do not overwrite the previous condition. Record the change, reason, updated condition and observed response so later comparisons retain their engineering context.
Note whether the reviewed condition is retained, requires another trial or is linked to an open issue. Significant corrective actions can reference the Mold Trial Issue Tracking Sheet .
Document Boundary
A trial record documents what happened during a specific molding trial. It supports traceability and later engineering review, but it does not replace the documents that define execution, dimensional evidence, validated limits or final release.
The record captures conditions and results; the Mold Trial Checklist defines what engineers should check during T0–T4 execution after the mold is mounted.
CTQ results can be referenced in the trial record, but detailed ballooning, inspection methods, measured characteristics and formal dimensional disposition belong in the applicable FAI or inspection report.
The record may reference an established operating range. It does not experimentally validate that range or define the production control limits, reaction rules and revalidation triggers used on the shop floor.
A completed record can support downstream evidence review, but capability, PPAP or other required validation and final tool release follow the separate Injection Mold Validation Guide and project requirements.
Downloadable Engineering Template
Use this one-page PDF to organize the key information generated during a T0–T2 mold trial and keep the reviewed samples, process condition and engineering changes traceable to the same trial record.
Template fields should be adapted to the mold, resin, customer requirements and evidence required for the specific trial.
Filled Record Example
The example below shows how one trial entry can connect the tool revision, material, actual process condition, CTQ result and adjustment history without treating the recorded values as universal molding limits.
Trial Record FAQ
These questions clarify what belongs in a T0–T2 trial record and how the document differs from process validation, production control and formal dimensional inspection records.
A useful trial record should identify the project, mold revision, trial stage, machine, resin lot and cavity, then connect those details to the actual molding condition, retained samples, CTQ results, adjustment history and trial disposition. The objective is traceability between what was run and what result was observed.
A trial record documents the conditions and results from a specific development trial. A production process control sheet defines the approved limits, monitoring requirements, reaction rules and other controls used after the process has reached the applicable production-control stage. The two documents therefore serve different lifecycle purposes.
Update the record whenever a new trial condition produces evidence that must remain distinguishable from the previous condition. This can include a change in trial stage, tool revision, machine, material or relevant process setting. Previous entries should remain identifiable rather than being overwritten by the latest values.
No. The record can document conditions tested during development and may reference an operating range once one has been established, but recording upper and lower values does not itself validate a process window. Validation requires the separate engineering study, evidence and acceptance criteria defined for the project.
No. A trial record can include or reference selected CTQ results so they remain linked to the molding condition that produced the sample. An FAI or dimensional inspection report provides the more detailed characteristic-level measurement evidence, inspection method and formal dimensional disposition required by the project.
Trial Record Engineering Review
Send your current trial record, drawing revision, CTQ information and relevant trial findings. SPI can review whether the record clearly links the trial condition, samples, measured results and engineering changes, and identify important traceability gaps before the next review.
Current T0–T2 record, drawing revision, available CTQ results and any significant adjustment or open finding.
Missing record fields, sample-to-condition traceability, unclear change history and evidence that may need better identification.
This engineering review supports documentation quality and traceability; it does not replace project-specific validation, customer approval or final mold acceptance.