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LAMINATE FLOORING SMALL BALL IMPACT RESISTANCE EN13329: 2006 (adapted)

1. TOOLS
1.1 Contrast medium
1.2 Impact tester, consisting of an impact bolt with a 5 mm steel ball mounted at one end, which is projected once against the surface under test by the release of a compression spring. The spring compression force before release can e adjusted continuously form 0 to 90 N by means of a force-setting barrel
1.3 Steel plate, having dimensions of approximately 300 mm x 300 mm x 50 mm
1.4 A flexible extruded polyethilene foam sub layer of (3+/-0.5) mm thickness, and with a density of (25+/-5) kg/m3.

2. SAMPLING
5*(230+/-5) mm square samples

3. ENVIRONMENTAL CONDITIONS
The samples shall be preconditioned for at least 72 h at (23+/-2) °C and (50+/-5)% relative humidity before being used for a test

The test shall be performed in the same environmental conditions

4. TESTING PROCEDURE
4.1 Place the steel plate on a conveniently rigid horizontal surface

4.2 Locate the polyethilene foam sub layer on the steel plate and then locate the sample on the polyethilene foam sub layer

4.3 Fix the impact tester in its support fixture, load the tester, place the assembly on the sample and release the impact bolt. Start preliminary test with a spring force of 10 N and increase by 5 N on each occasion to determine the minimum spring force at which the sample surface shows damage due to impact stress. Once damage occurs, reduce the spring force 1 N at a time until the sample resists damage for 5 consecutive impacts at the same force level

4.4 Damage is defined by the presence of fine hairline cracks (frequently concentric), continuous cracks or flaking (indentations without cracks do not count as damage). To make any damage more easily visible, the sample surface shall be rubbed with a contrast medium after the test

4.5 The distance between points of impact shall be at least 20 mm and between points of impact and the edge of the sample at least 30 mm

4.6 The sample’s impact resistance is the maximum value of the spring force, in Newtons, for which no damage occurs in a series of 5 strikes



4.7 Record the results of each test and calculate the average to the nearest 1 N

5. ASSESSING TEST RESULTS
Classification minimum requirements:
Class 21 (AC1)-22 (AC2)-23 (AC3) and 31 (AC3): Impact Class 1
Class 32 (AC4): Impact Class 2
Class 33 (AC5): Impact Class 3
Class 34 (AC6): Impact Class 4

The classification system is based on a combination of the results of the large-diameter ball test and the small-diameter ball test


Passing requirement per the sales contract


 
  
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