Characterisation of paper and board

Benefit description

- Determination of grammage: Paper, board and corrugated board according to UNE-EN ISO 536. - Determination of thickness: Paper, board and corrugated board according to UNE-EN ISO 536, UNE-EN ISO 3034 o UNE-EN-ISO 12625-3. - Determination of the component papers grammage from corrugated board after separation according to UNE-ISO 3039. - Determination of tensile properties. Paper and board. Constant rate of elongation method. 20 mm/min. (UNE-EN ISO 1924-2) - Determination of tensile strength after immersion in water. Paper and board (UNE-ISO 3781). - Determination of paper tearing resistance. Elmendorf method. (UNE-EN ISO 1974) - Determination of bursting strength of paper and board. (UNE-EN-ISO 2758 y UNE-EN ISO 2759) - Determination of bursting strength of paper and board after immersion in water. (UNE-ISO 3689) - Determination of the compressive strength of paper, board and corrugated board: Ring Crush Test -RCT-(UNE 57170); Short Span Compressive -SCT-(ISO 9895); flat crush resistance after laboratory fluting -CMT- (UNE-EN-ISO 7263), edge crush resistance after laboratory fluting -CCT- (UNE-EN-ISO 16945), Edgewise crush resistance - ECT- (UNE-EN ISO 3037), flat crush resistance-FCT- (UNE-EN-ISO 3035), and small packaging. Test conditions: Standard conditioning or 30 minutes in specific conditions or 24 hours in specific conditions. - Optical properties determination of pulp, paper and board: RX, RY and RZ (ISO 2469); CIE Whiteness, D65/10° -outdoor daylight-(UNE-ISO 11475); ISO brightness - Indoor daylight conditions (UNE-ISO 2470-1); D65 brightnesss -outdoor daylight illumination -D65/10º-. (ISO 2470-2); opacity -paper backing-(UNE-ISO 2471); Color - tristimulus and CIELAB coordinates: Indoor daylight conditions (C/2º)- (UNE-ISO 5631-1) and outdoor daylight illumination -D65/10º- (UNE-ISO 5631-2); Specular gloss at 75º, TAPPI method (UNE-EN-ISO 8254-1). - Determination of paper air permeance: Bendtsen (UNE-ISO 5636-3) and Gurley (UNE-ISO 5636-5) methods. - Determination of paper and board roughness/smoothness. Bendtsen method (UNE 57080-2) y Bekk method (UNE 57093:1990). - Determination of water absorption by paper and board. Cobb method. COBB60, COBB600 y COBB1800 (UNE-EN ISO 535) and Drop test (UNE 57073)

Benefit description

The following analyses are performed: pH of aqueous extracts. Cold extraction (UNE-ISO 6588-1). pH of aqueous extracts. Hot extraction (UNE-ISO 6588-2). Surface pH (TAPPIT 529) Determination of alkali reserve (UNE 57174) Moisture determination (UNE-EN 20287) Determination of ashes (UNE 57050) Determination of formaldehyde in an aqueous extract (UNE-EN 1541) Determination of transfer of antimicrobial constituents (UNE-EN 1104) Determination of coating content