Description
Castello cardboard:
- ISO 16245 type A and PAT certificate
- 100% cellulose
- colour: dark grey with white inner side
- pH > 7.5
- alkaline reserve > 0.4 mol/kg
- Kappa number < 5
- water absorbency: Cobb60 < 25 g/m2
- no dye migration
- no optical brighteners
- grammage: 1100 g/m2
- Ring:
- 4 rings
- stainless steel
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