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Technical properties of our Metalvac papers, its main uses and recommended printing methods. Information available on the range: |
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FAQS
Which subtance is used for manufacturing beer labels?
The substance of metallized paper for manufacturing beer labels is chosen according to the following:
- printing technique to be used: offset or rotogravure
- label size and format
- its exact placement on the bottle: front, back, or neck
- surface onto which it will be applied
- other physical characteristics: tear resistance, opacity, rub resistance, etc.
The aim is to select the optimal substance that will assure that the label will be wrinkle-free, mechanically resistant and securely fastened to the bottle. For beer labels, low-substance moisture-resistant metallized papers or WS (wet-strength) papers are normally used: substances between 68-73 g/m² for flat printing in offset and between 63-73 g/m² for rotogravure printing.
Substance is a parameter that is measured and controlled in accordance with the ISO 536 regulation.
Which substance is used for manufacturing wine and spirit labels?
For wine, spirits, cava and champagne bottles, higher substances than those for beer labels are usually used: 73-93 g/m² In these applications, the bottle is usually not returnable, yet a certain degree of moisture resistance is still required if the paper is to withstand the cold and humidity to which the bottle is subjected during its processing, conservation, and use.
Substance is a parameter that is measured and controlled in accordance with ISO 536 regulation.
Why is it important that metallized paper to be used for labeling be moisture resistant?
Paper to be used for bottle labeling must be water-resistant, and in the case of returnable bottles, also resistant to the alkaline solutions of the washing train, as the conditions of labeling, storing, and use of the bottles involves, in many cases, a high degree of condensation on the exterior of the bottle and, as such, on the label itself.
The moisture and alkaline resistance of a paper is measured in accordance with DIN 16524-7 regulation.
In the case of metallized papers, the resistance value to alkaline is between 10-30 minutes for medium WS papers and more than 30 minutes for full WS. Full WS metallized papers are suitable for labels to be used on returnable bottles.