BS ISO 6915:2019 pdf free.Flexible cellular polymeric materials一Polyurethane foam for laminate use – Specification.
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. ISO 845, Cellular plastics and rubbers一Determination of apparent density ISO 1798, Flexible cellular polymeric materials一Determination of tensile strength and elongation at break ISO 1923:1981, Cellular plastics and rubbers一Determination of linear dimensions ISO 2440, Flexible and rigid cellular polymeric materials一Accelerated ageing tests 3 Terms and definitions No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses: 一ISO Online browsing platform: available at https://www.iso.org/obp 一IEC Electropedia: available at http://www.electropedia.org/ 4 Appearance 4.1 The material shall consist of a uniform network of cells and shall be free from any flaws, stains and other defects which might detrimentally affect the serviceability. 4.2 Material of thickness up to and including 6 mm shall lie flat when laid on a flat surface. 4.3 The material shall have no holes more than 3 mm in diameter through the full thickness of the foam. The maximum number of holes of diameter between 1,5 mm and 3 mm in any 60 m2 of material shall be not more than four for material of thickness 2 mm or less, and not more than eight for thicker material.8 Apparent density The apparent density of the material, when determined by the method given in ISO 845, shall be within士10 % of the nominal value agreed between the purchaser and the supplier.  9 Cell count The cell count shall be as agreed between the purchaser and the supplier subject to a tolerance of士10 %. It shall be expressed in cells per linear 100 mm, and shall be determined by the method
described in Annex A. The cell count method described produces a result representative of the count at a single position. Variations may occur within a sheet of foam and, if necessary, these can be established by agreement be- tween the purchaser and the supplier. 10 Performance requirements The performance requirements, determined in accordance with the appropriate methods indicated in Table 3, shall be in accordance with the limits stated in the table.
11 Packaging and marking The product shall be packaged in such a manner as to be protected against possible contamination and deformation. Each product or package shall be marked with the following information BS ISO 6915 pdf download.