BS ISO 6915:2019 pdf download – Flexible cellular polymeric materials — Polyurethane foam for laminate use — Specification
This document specifies the minimum requirements for flexible polyurethane foams up to and including 20 mm thick intended for combination with suitable substrates such as non-woven, woven or knitted
fabrics, to form a laminate.
Three types of flexible polyurethane foam are specified as follows:
— type 1: polyether;
— type 2: polyester with minimum elongation at break of 200 %;
— type 3: polyester with minimum elongation at break of 300 %.
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 — Determination of apparent density
ISO 1798, Flexible cellular polymeric materials — Determination of tensile strength and elongation at break ISO 1923:1981, Cellular plastics and rubbers — Determination of linear dimensions
ISO 2440, Flexible and rigid cellular polymeric materials — 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:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
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 ± 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 ± 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:
a) the name and/or distinctive mark of the manufacturer;
b) the batch number of other reference to identify the individual rolls with manufacturing batches;
c) the nominal thickness;
d) the nominal width;
e) the length;
f) the number of this document and type of sheeting.BS ISO 6915 pdf download.