A good hot stamping result depends on more than the foil itself. The adhesive layer affects transfer quality, edge definition, adhesion, drying, and storage stability.

When selecting a water-borne adhesive for hot stamping foil production, start with three points: the substrate, the coating process, and the stamping temperature.

Check the Substrate
Hot stamping foil may be used on paper, OPP, PET, PVC, leather, and other materials. These substrates do not have the same surface properties or heat resistance.
Before choosing an adhesive, confirm:

The final stamping substrate
Any surface treatment on the substrate
The required adhesion
The stamping temperature and pressure

A laboratory test is recommended because the same adhesive may perform differently on different foil and substrate combinations.

Consider Drying and Back Tack
On a continuous coating line, the adhesive must dry before the foil is rewound. If the coating is not fully dried, the roll may block during storage.
Drying performance is affected by coating weight, oven temperature, airflow, and line speed. The adhesive should also remain non-tacky after proper drying.

Confirm the Activation Temperature

A lower stamping temperature can be useful for thin films and delicate papers. It may help reduce shrinking, warping, or other heat-related damage.

The recommended range provides a starting point, but the final setting should be confirmed on the customer’s equipment. Pressure, contact time, production speed, and foil construction can all affect the result.

BA-8441 Water-Borne Adhesive for Hot Stamping

BA-8441is a modified polyurethane adhesive manufactured bySinograce Chemicalfor hot stamping applications.

Its main features include:

Fast drying
Good anti-back-tack performance
Excellent heat resistance
Suitable for hot stamping at 95–135°C
Good adhesion to paper, OPP, PET, PVC, leather, and other substrates

Typical Properties

Property	Typical Value
Appearance	Translucent liquid
Solid content	34 ± 1%
Viscosity	Below 200 mPa·s at 25°C
Polymer type	Modified polyurethane polymer
Hot stamping range	95–135°C

These are typical values, not guaranteed specifications. Please refer to the latest technical data sheet before production.

FAQ

What substrates can BA-8441 be used on?
BA-8441 provides good adhesion to paper, OPP, PET, PVC, leather, and other commonly used substrates. A trial is recommended before commercial production.

What is the recommended hot stamping temperature?

The typical range is95–135°C. The final setting depends on the substrate, foil construction, pressure, speed, and equipment.

What are the MOQ, packaging, and lead time?

The MOQ is200 kg. Packaging options include200 kg drumsand1,000 kg IBC totes. Standard production lead time is generally within30 days after order confirmation.

For samples, technical data, quotations, or application support, please contactSinograce Chemical.

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