Plan a trial for your application
Warp sizing
At equal size add-on, compare abrasion resistance, yarn hairiness and warp breaks on the loom.
Compatibility with subsequent desizing
Under the actual desizing process, check residual size, absorbency and subsequent dyeing uniformity.
Purchase specifications and incoming inspection
Review these properties for the intended application grade. Example figures refer to the cited grade or source. Confirm the offered specification, packaging and lead time in the quotation. Ingredion HI-SET 369 · Modified starch for textile sizing ↗
| Property | Unit | Published or agreed specification | Test conditions and checks |
|---|---|---|---|
| Sizing bath viscosity | mPa·s | Agree for the grade and end use | Keep solids, gelatinisation history and temperature constant. |
| Size film properties | Tensile results or abrasion cycles | Agree for the grade and end use | Use the same film thickness and conditioning procedure. |
| Residual size after desizing | % by mass or rating | Agree for the grade and end use | State the test fabric, method and washing conditions. |
| Moisture | % by mass | Ingredion HI-SET 369 published example <13 | Compare the intended grades using the same drying method. |
When approving a sample, record the grade, methods, limits and specification revision. On receipt, match the packing lot number to the lot-specific COA and record the measured values and release decision.
From samples to commercial delivery
Packaging and receiving
State modification type, gelatinisation method and moisture-barrier liner for powder.
Storage and handling
Check caking and powder colour on receipt. Keep lot-specific test fabric for both sizing and desizing.
Sample and order lead times
State processing equipment, trial batch size and monthly demand. Confirm same-grade samples, first-order MOQ, staged deliveries and arrival date.
Questions from the plant
Why is yarn hairiness higher despite equal sizing viscosity?
Compare penetration, size pick-up and film strength. Check yarn twist.
Why does uneven dyeing occur despite a successful initial desizing trial?
Measure residual size and absorbency before and after desizing on the actual warp yarn.
Report a delivery or batch issue
Include the order number, lot number from the package, label photos and inspection records for the affected lot. When retesting, check Sizing bath viscosity, Size film properties, Residual size after desizing.
Request documents for your application
TDS · Technical data sheet
For grade selection and sample approval, specify the grade and revision required.
SDS · Safety data sheet
Specify the country or region of use and the required language.
COA · Certificate of analysis
Request a sample COA during supplier review. For incoming inspection, provide the actual lot number.