NF ISO 8791-2
Paper and board - Determination of roughness/smoothness (air leak methods) - Part 2 : Bendtsen method
ISO 8791-2:2013 specifies a method for the determination of the roughness of paper and board using the Bendtsen apparatus. ISO 8791-2:2013 is applicable to paper and board which have Bendtsen roughness values between about 5 ml/min and 3 000 ml/min when measured with variable-area type testers and between about 50 ml/min and 5 000 ml/min when measured with electronic type testers. It is not suitable for soft papers which allow the land to make a significant impression on the surface or for high-air-permeance papers which allow a significant flow of air to pass through the sheet, or for papers which will not lie flat under the measuring head.
ISO 8791-2:2013 specifies a method for the determination of the roughness of paper and board using the Bendtsen apparatus.
ISO 8791-2:2013 is applicable to paper and board which have Bendtsen roughness values between about 5 ml/min and 3 000 ml/min when measured with variable-area type testers and between about 50 ml/min and 5 000 ml/min when measured with electronic type testers. It is not suitable for soft papers which allow the land to make a significant impression on the surface or for high-air-permeance papers which allow a significant flow of air to pass through the sheet, or for papers which will not lie flat under the measuring head.
- Avant-proposiv
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1 Domaine d'application1
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2 Références normatives1
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3 Termes et définitions1
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4 Principe1
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5 Appareillage2
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5.1 Appareil Bendtsen pour essai (deux modèles)2
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5.2 Débitmètre à section variable2
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5.3 Débitmètre électronique3
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6 Échantillonnage5
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7 Conditionnement5
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8 Préparation des éprouvettes5
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9 Étalonnage et vérification5
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9.1 Appareil de type débitmètre à section variable5
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9.2 Appareil de type débitmètre électronique5
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10 Mode opératoire5
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10.1 Atmosphère d'essai5
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10.2 Mesurage au moyen de l'appareil de type débitmètre à section variable5
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10.3 Mesurage au moyen de l'appareil de type débitmètre électronique6
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11 Expression des résultats6
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12 Rapport d'essai7
- Annexe A (normative) Entretien et maintenance des appareils Bendtsen pour essai, de type débitmètre à section variable8
- Annexe B (normative) Étalonnage des tubes capillaires et des débitmètres à section variable et électronique10
- Annexe C (informative) Fidélité14
- Bibliographie16
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