Application and use

The surface of HERMAtherm D offers an excellent quality of the imprint with all conventional printing methods. In general, suitability of all printing inks should be tested prior to printing. Web temperature during curing should not exceed 50 °C in order to prevent an early reaction of the thermo reactive ink.

Printing speeds of up to 200 mm/s are possible in thermo direct printing.

This phenol-free paper can be used wherever thermal reactive labels of smudge proof, solvent and grease resistant paper are required, e.g. for weight labels (meat packers, supermarkets) or for price marking labels (excellent suitability for EAN and UPC codes). It can be used for moistly and dry applications. Applications on surfaces containing plasticizers are only partially possible. By reason that intensive contact with plasticizers might reduce the sensitivity of the thermo reactive coating and might cause a fading of the printed image, for applications on soft PVC films individual tests are recommended.

The pulp for this paper comes from FSC® certified forest management and other controlled sources.

Adhesive 92K has been specially developed for deep-freeze applications. Initial tack on frozen surfaces of -20°C is excellent. Adhesion is equally good on damp surfaces. With ambient temperatures, both initial tack and final adhesion are excellent on unpolar surfaces such as PE and PP films.

Typical areas of application for this coated kraft liner are computer labels for laser printers (continuous or sheet stock), which require higher stiffness.

Processing

Good die-cutting characteristics on all usual machines. Excellent printability with UV printing inks. As part of a self-adhesive compound HERMA KW (527) offers good die-cutting characteristics with all customary flatbed and rotary label cutters.

Storage conditions

Storing at a temperature of 20 ± 5 °C, a relative humidity of 45 ± 5 % and a dark storage is recommended. Moisture, heat and direct sunlight have to be avoided.

The shelf life is one year from date of production.

Regulations concerning contact with food

For any food application the above mentioned thermal paper can be used together with a functional barrier to achieve a non-migration, the functional barriers tested for this purpose covering all the categories of foodstuffs for which the above mentioned thermal paper is likely to be used (biscuits, bakery, ice cream, confectionary, crisps & snacks, frozen & dry food, beverage powders, meat & gassing ripening cheese packaging). In any case, a direct contact is not foreseen.

All ingredients of adhesive 92K comply with recommendation FDA 21 CFR 175.105 (Adhesives).

The paper complies with recommendation BfR XXXVI.