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Information about tests

determination of opacity

The measurements are carried out using a spectrophotometer. In difference to the test methods for paper, such as ISO 2471 or DIN 53146, the method for plastic films uses a white underlay instead of a number of layers of material stacked to complete opacity to determine R∞ and a black underlay instead of a completely black hollow body to determine Ro. An opacity chart (Leneta) type 2 a serves as a black and white base.

test method:optical tests
Norms: DIN 6125 (2020-05)
ISO 2471 (2008-12)
Needed sample size:5 x DIN A 4

Standardprüfungen

Opacity, opaque and/or white pigmented films
Method using diffuse reflection, with Leneta opacity card as background. By default, measurements are performed with standard light type D65 under gloss inclusion (SCI). On request, measurements with standard light type D 50 and/or under gloss exclusion (SCE) are also possible.
Norm: DIN 6125


Opacity, paper and cardboard
Method using diffuse reflection. Ro is measured against a black hollow body, R∞ is measured against a lightproof material stack. By default, measurements are performed with standard light type D65 under gloss inclusion (SCI). On request, measurements with standard light type D 50 and/or under gloss exclusion (SCE) are also possible.
Norm: ISO 2471




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Your contact person

Matthias Böhne +49 441 94986-11
matthias.boehne@innoform.de

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