Application and use

HERMAtherm D is phenol-free and can be used for applications requiring increased resistance to moistue, solvents or grease, e.g. for weight labels (meat packers, supermarkets) or for price marking labels (excellent presentation of EAN and UPC codes). It can be used for moist and dry applications. For applications on soft PVC films individual tests are recommended because contact with plasticizers might have a negative impact on the thermal imprint.

Direct thermal printing is possible with speeds up to 200 mm/s.

The material can be printed by all conventional roll printing methods. The inks should be suitable for thermal paper (solvent-free), a consultation of the ink supplier is recommended. Complete curing of the ink must be ensured. Due to the thermal sensitive characteristics the web temperature during curing should not exceed 50 °C. In general, it is advisable to carry out pretests under customer-specific conditions to ensure suitability.

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

The PSA 63Vst is characterized by an extraordinary high tack. Even on critical surfaces tack-level is very high. 63Vst is therefore ideal for cool, moist and even slightly greasy surfaces. Despite the excellent low temperature properties, it indicates very good mandrel-hold and is therefore suitable for curved surfaces and irregular 3D packaging. Once labelled 63Vst is highly waterproof. This supercalendered glassine is perfectly suited for assignment in labelling machines equipped with optical or mechanical scanners.

Processing

Excellent die-cutting characteristics on all customary machines.
As part of a self-adhesive compound HERMA PH (515) offers excellent die-cutting characteristics with all customary flatbed and rotary die-cutting tools.

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 two years from date of production.

Regulations concerning contact with food

The thermal paper grade HERMAtherm D (Grade 919) is suitable for direct contact with foodstuffs that are typically washed, shelled, and/or peeled before consumption, based on experience.

For all other forms of food contact, a functional barrier should be used to prevent migration. The functional barriers have been tested and verified as effective for all categories of foodstuffs in which the thermal paper is likely to be used (food packaging for diary products, meats and seafood, fruits and vegetables, cereal products, confectionary, processed and prepared foods, fats, infant products). In any case, a direct contact is not foreseen.

All ingredients of adhesive 63Vst comply with recommendation BfR XIV or FDA 21 CFR 175.105 (Adhesives).

The pressure-sensitive adhesive 63Vst can be safely used for the back coating of labels for the labelling of foodstuffs for storage at room temperature and below. It may be used in direct contact with dry, moist and fatty foodstuffs that can be assigned a correction factor of at least 2 in accordance with Regulation (EU) No. 10/2011. Furthermore, the adhesive may be used for laminating various materials. In this case, cut edge contact with food is harmless as far as the above mentioned adhesive is concerned. It must be ensured that the relevant migration limits are complied with by the laminated packaging (Declaration of no objection valid until 15.12.2027).

Furthermore the self-adhesive labels with the adhesive 63Vst can be used for labelling of blood bags (Expert's Opinion from December 16, 2021).

The paper complies with recommendation BfR XXXVI.