How to Request Adhesive TDS and Trial Protocols from China Suppliers

Quick answer

Request adhesive TDS with measurement methods, then attach a written trial protocol before any volume PO. A brochure PDF without viscosity method, gel data, or acceptance criteria is not enough for corrugating or carton sealing programs.

Demand method-based TDS fields

Ask for viscosity method, solids, pH or alkali notes where relevant, gel/softening data, shelf life, storage, and recommended substrates. Require SDS alongside the TDS.

Write the trial protocol

Define substrate, machine, speed, coat weight, climate, sample size, tests (pin adhesion, fiber tear, warp, clean-up), and pass/fail rules. Name who signs the OK sheet.

Control samples and lots

Label trial lots, retain sealed samples, and ban silent reformulation after approval. Any change to starch source, additive package, or viscosity window should reopen the trial gate.

Tie documents to commercial terms

Link deposit or balance milestones to complete TDS/SDS and an approved trial record. Put re-approval triggers in the PO annex.

RFQ annex

Required TDS/SDS fields

Trial protocol and acceptance tests

Retention sample rules; reformulation ban

Technical contact; lead time for trial support

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