HERMAtherm L BPA-free (924)
White thermal paper without protective surface coating (economy quality), FSC®-Mix Credit
Technical data
| Grammage | approx. 70 g/m² | ISO 536 |
| Caliper | approx. 78 µm | ISO 534 |
| Tensile strength MD | approx. 70 N/15 mm | DIN 53112 |
| Tensile strength CD | approx. 33 N/15 mm | DIN 53112 |
| Stiffness MD | approx. 190 mN | DIN 53121 |
| Stiffness CD | approx. 90 mN | DIN 53121 |
| Opacity | approx. 90 % | ISO 2471 |
| Imaging colour | black |
Application and use
HERMAtherm L BPA-free is well suited as weight label material on food packaging and presents excellent grades with EAN and other barcodes. As economy thermal papers are not equipped with a protective surface coat, they should not be exposed to water or greasy substances. The image may fade over a period of time if applied to surfaces containing plasticisers (e.g. flexible polyvinyl chloride).
Printing speeds of up to 250 mm/s are possible in thermal direct printing.
The surface of HERMAtherm L BPA-free offers a good quality of imprint provided that solvent-free inks and varnishes are applied. The inks should be suitable for printing thermal papers, consulting of ink supplier is recommended. In general, suitability tests should be performed under customer-specific conditions as unpredictable interactions with the ink may occur due to the lack of a protective coating. Web temperature during curing should not exceed 50 °C in order to prevent premature imaging or discolouration.
Recommended storage
See HERMA website: www.herma.com/material/storage-conditions/
Regulations concerning contact with food
The thermal paper grade HERMAtherm L BPA-free (924) according to the sample material is physiologically and toxicologically safe and may therefore be used in printers and scales for the marking of goods. Howe ver, they may only stand in direct contact with foodstuffs for a short time, which are washed and/or peeled before consumption (ISEGA Research and Development Institute, Aschaffenburg).
Disclaimer
All statements, technical information and recommendations regarding HERMA products are given in good faith and are based on tests that we believe to be reliable, but do not constitute a guarantee or warranty. We give no guarantee as to the suitability of the product for a specific application, this should be tested by the user. Unless otherwise agreed in writing, we only accept liability within the scope of our General Terms and Conditions of Delivery and Payment.
HERMA GmbH, Adhesive Material Division, 70791 Filderstadt, Phone +49 (0) 711 7702-0
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