BS EN 16094:2021 pdf download.Laminate floor coverings – Test method for the determination of micro-scratch resistance.
This document specifies a test method for the micro-scratch resistance with two procedures (A and B) and a test method for polishing resistance (procedure C) which can be used for all types of laminate floor coverings. The resistance to polishing is related to mat surfaces.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 2813, Paints and varnishes — Determination of gloss value at 20°, 600 and 850 (ISO 2813)
EN ISO 12945-2, Textiles — Determination of fabric propensity to surface pilling, fuzzing or matting — Part 2: Modified Martindale method (ISO 12945-2)
EN ISO 12947-1, Textiles — Determination of the abrasion resistance of fabrics by the Martindale method
— Part 1: Martindale abrasion testing apparatus (ISO 12947-1)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.orglobp
3.1 cycle completion of all the translational movements tracing a Lissajous figure comprising 16 rubs
Note 1 to entry: This comprises of 16 revolutions of the two outer drives and 15 revolutions of the inner drive of the Martindale tester.
3.2 Lissajous figure
figure created by movement which changes from a circle gradually narrowing ellipses, until it becomes a straight line, from which progressively widening ellipses develop, in a diagonally opposite direction before the pattern is repeated.
4 PrInciple
The sample Is fixed on a horizontal table. A circular scrub material fIxed on a hokler Impacts on the sample with a deftned load, Table and holder are osoved perpendicular to each other In a transl.atlanal movement, with defined frequencies. tracing a Lislalaus figure. The holder Is additionally freely rotatable around Its awn axis perpendicular to the horizontal plane
The sample Is exposed to the scrub material lcw a predetermined number uI rubs The ctsanges ol the surface are determined by gloss measurement and visual assessment,
5 Apparatus and matenals
5.1 Martlndale tester
The Martindalr tester shall be as described in EN lO 12947-I with the following exceptions:
— the “abrading t.able Is the table for the sample;
— the“clamping ring and mechanism”is not necessary;
— the “specimen holder Is the holder for the scrub material;
— the “loading pieces” are not necessary.
5.2 Holder for scrub material
The holder for scrub material shall be as described in EN ISO 12945-2. with the following exceptions:
— version 1: the rubber retaining ring is not required. This assembly consists of spindle, scrub holder and small nng weight. The total mass of this assembly is (413 t 2)1 (nominally called 4N);
— versIon 2: the assembly according to versIon 1. however the small ring weight Is replaced by the large weight. The total mass olthls assembly Is (612 t 2)g (imnsinally called 6N).
5.3 DilIuse light source
Light source with artificial light providing evenly diffused light giving an Illumination on the test surface of(1 200+400)k
5.4 Reflectometer
For gloss measurement with 3 angie meisurenlent geometry as described in EN ISO 2813. 5.5 PositIoning device
For gloss measurement on the same position before and alter the test with 4 measurement points An example of a positioning device Is shown In FIgure 1.
5.6 Scrub materials
The scrub material shall be a nylon web imbedded with alumina abrasive. Three types of scrub materials (very fine, medium fine and ultra-fine) are to be used. The scrub materials shall be cut or stamped on a diameter of (89 ± mm.
NOTE Scotch Brite fleece SB 7447 (very fine), SB 7440 (medium fine) and SB 7448+ (ultra-fine) are examples of a suitable product available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by CEN of this product.
5.7 Double-sided tape
The double-sided tape is to attach the scrub material on the guide plate of the holder and the sample on the table.BS EN 16094 pdf free download.