BS 7619:2021 pdf download

BS 7619:2021 pdf download.Extruded cellular unplasticized white PVC (PVC‑UE) profiles — Specification
1 Scope
This British Standard specifies the requirements of mono and co-extruded cellular white PVC-UE profiles for non-structural building applications, where they are subjected to ambient temperatures up to 50 °C.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes provisions 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.
BS 476-7, Fire tests on building materials and structures – Method of test to determine the classification of the surface spread of flame of products
BS 3900-D10, (ISO 7724-3), Methods of test for paints – Determination of colour and colour difference: Calculation
BS EN 20105-A02:1995, [ISO 105-A02:1993), Textiles – Tests for colour fastness – Grey scale for assessing change in colour
BS EN ISO 4892-2:2006+A1:2009, Plastics – Methods of exposure to laboratory light sources -Part 2: Xenon-arc lamps
BS EN ISO 4892-3:2006, Plastics – Methods of exposure to laboratory light sources – Part 3: Fluorescent UV lamps
3 Terms and definitions
For the purposes of this British Standard, the following terms and definitions apply.
3.2.2 PCWb
material, free from contamination and degradation, made from used PVC-U profiles
3.3 post-industrial waste (PIW)
3.3.1 PIWa
material, free from contamination and degradation, made from unused PVC-UE profiles including offcuts, which is reprocessed in the same factory as that in which it was previously extruded
3.3.2 PIWb
material, free from contamination and degradation, made from unused PVC-UE profiles, which is reprocessed in a different factory as that in which it was previously extruded
3.3.3 PIWc
material, free from contamination and degradation, made from unused PVC-U profiles
3.4 virgin material
material in granular or powder form without the addition of recycled material, which has only undergone processing for its own manufacture
4 Materials
4.1 General
Profiles shall be manufactured from either:
a) 100% virgin material (100% virgin core material and 100% virgin skin material, where applicable); or
b) recycled material conforming to 4.2 and 4.3.
6.4 Test samples for colour fastness
To test for colour change as a result of weathering, two test samples shall be tested in accordance with Annex A.
Profile test samples with a width of less than 50 mm or a flat area of less than 50 mm2 shall be excluded from this test. Both test samples shall be of equal size.
6.5 Test sample for flatness
To determine the deviation of flatness across its surface, one test sample shall be selected. The test sample shall be a minimum of 300 mm in length and 100 mm in width. It shall be tested in accordance with Annex B.