Senda Lab Services: Application Engineering on Your Substrates
Send paper, film, or foil samples with your line conditions. Our engineers screen surface energy, bond failure modes, and viscosity windows before you commit to bulk supply.
What the lab delivers
Three services buyers use before approving a grade on production equipment—not generic “strongest glue” claims.
Substrate analysis
Surface energy (dyne level), coat weight, and porosity checks so chemistry matches your facestock—not guesswork from a data sheet alone.
Bond performance testing
Peel, fiber-tear, heat-age, and humidity exposure on your structure—qualified against internal specs before we nominate a grade.
Line-matched tuning
Viscosity, open time, and set speed adjusted for your applicator speed and maintenance window—pilot runs on lab coaters where needed.
Instruments on the screening path
Standard QC and application tools used to release batches and to qualify new programs—ASTM/ISO methods where your audit requires them.
Digital viscosity tester
Rotational viscosity and solids checks for release and tuning.
Tensile & peel tester
Fiber-tear and peel curves on laminated samples.
Climate chamber
Cold, heat, and humidity aging for export or cold-chain packs.
Pilot coater
Simulates coat weight and line speed before plant trials.
How a lab project runs
From your inquiry to a nominated grade and report—typically a few business days after samples arrive.
Submit the form
Describe substrate, bond station, failure mode, and target market documentation.
Ship samples
We email Wenzhou lab routing; you courier substrates and any failed parts.
Screening & formulation
Engineers run analysis and shortlist grades for your equipment.
Report & next step
Technical summary and next steps: complimentary 1 kg lab material or a line trial via Get Quote.
Ready for bulk supply after screening?
Lab qualification is separate from MOQ orders. Request complimentary lab material when a grade is nominated.
