BS EN 1269:2019 pdf free.Textile floor coverings一Assessment of impregnations in needled floor coverings by means of a soiling test.
The soil is placed in the inner sieve which is vibrated relative to the larger outer sieve thereby achieving even distribution of the soil on the specimen below the two sieves. The mesh size of both sieves is 0,5 mm (module 31 of ISO 565]. The base of each sieve (each of which has walls) is in the shape of a regular trapezium in order to correspond to a sector of the treated area of the test specimen. The outer (lower) sieve has following base dimensions: 一distance between the parallel sides: 220 mm; 一length of the parallel sides: 100 mm, 45 mm. Its underside is 40 mm above the specimen. The dimensions of the inner (upper) sieve are not specified but shall be smaller than the base sieve to permit movement relative to the lower sieve.A rigid cylindrical drum with bottom and lid shall be used. The inner diameter is [205土5) mm and the . inner height of the drum is [200土10) mm. The drum is made of polyvinylchloride (PVC), with a thickness of at least 6 mm. The bottom and lid are attached to the wall by appropriate means. The lid of the drum is preferably made of transparent material (e.g. Polymethylmethacrylate).The drum lies loose on rollers mounted on a support and drive shaft. The drum is prevented from moving in its axial direction by smooth running wheels fixed between the shafts or by a suitable profile on the rollers. It is important that the axis of the drum rotation is horizontal, which should be checked by placing a spirit level along the upper surface of the drum when in position. The rotational frequency of the drum shall be (50土2) cycles per minute. . A counter is incorporated in the system, so that the number of rotations of the drum can be recorded. The counter may be pre-set to stop the apparatus after a given number of revolutions. NOTE Longer driving rollers can be used to rotate a number of drums at the same time provided that all the requirements of this document are met.BS EN 1269 pdf download.