Dry Lamination Adhesive Mix Ratio Log

It covers the key checks needed before a dry lamination run: adhesive, hardener, and solvent ratios, pot life, and coat weight. The log is meant to confirm the batch was mixed to spec before material reaches the laminator. It is a quality-control record, not a full production report. If your process also needs viscosity, temperature, or line speed checks, those can be added as custom checklist items.

Use it each time a new adhesive batch is prepared or a mix is adjusted before the laminator starts. It is especially useful at shift start, after changeovers, and whenever a batch is held long enough that pot life may be affected. If your line runs continuously with no batch changes, you may still use it at defined intervals tied to your recurrence. The goal is to verify the mix before it becomes a blocking issue on the line.

The DRI is usually the operator, mixer, or lead responsible for preparing the adhesive batch, with a supervisor or quality reviewer signing off if your process requires it. The person completing it should be the one who can verify the measurements directly, not someone relaying them secondhand. If you use a handoff between mixing and coating, the receiving operator can also confirm the batch details before release. Keep the assignment clear so ownership of the verification step is unambiguous.

Yes, it supports traceability by showing what was mixed, when it was checked, and whether it matched the required ratio before use. That makes it useful for quality systems that rely on documented process verification. It does not replace your plant's approved work instruction, material certificate, or batch record. If you operate under a regulated quality system, align the fields with your internal SOP and retention rules.

The most common issues are incorrect ratio calculations, using solvent beyond the allowed window, and running material after pot life has expired. It also helps catch missing verification of coat weight before the line starts. Another frequent problem is recording a batch after the fact instead of at the time of mix, which weakens the value of the log. A clear checklist item for each measurement reduces those gaps.

Yes, and you should. Different adhesive systems may require different ratio tolerances, pot life limits, or target coat weights, and substrate changes can affect what needs to be recorded. Add fields for product code, lot number, temperature, or viscosity if those are part of your release criteria. Keep each checklist item independently verifiable so the log stays easy to review.

An ad-hoc note often captures only part of the mix data and can be hard to review later. This template standardizes the verification step so the same critical values are recorded every time. That makes it easier to spot trends, hand off between shifts, and confirm the batch was released intentionally. It also reduces the chance that a missing detail becomes a production delay.

Yes, it pairs well with pre-shift inspections, line clearance checks, batch release logs, and nonconformance follow-up tasks. You can link it to a Kanban board for prioritization or to a runbook-style workflow for escalation when a mix is out of spec. If a batch fails verification, the next step should be a blocking corrective action rather than a normal production task. That keeps the log tied to real operational decisions.