ISO 14632 pdf download

ISO 14632 pdf download.Extruded sheets of polyethylene (PE-HD) — Requirements and test methods 1 Scope This standard specifies the requirements and test methods for solid flat extruded sheets of polyethylene homopolymers (PE – HD) without fillers or reinforcing materials. This standard applies only to thicknesses of 0,5 mm to 40 mm. This standard also applies to PE – HD sheet in rolled form. 2 Normative references This European standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. 3 Material Sheets consist of PE extrusion compounds designated by ISO 1 872-1 without fillers or reinforcing materials. Extrusion compounds can contain additives such as processing aids, stabilisers, flame protective agents and colorants. Compounds and additives of unknown identity shall not be used. NOTE: Legal requirements can cause a specific choice of extrusion compounds (see 4.3.3). 4 Requirements 4.1 Appearance Sheets shall be substantially free from bubbles, voids, cracks, visible impurities and other defects which would make them unfit for the intended use. Surfaces shall be substantially smooth and free from sharp grooves, sink marks or damage. Colorants shall be homogeneously distributed throughout the material. Slight colour differences due to the particular extrusion compound or processing procedure used are admissible. Admissible variations in any of the above shall be agreed between the interested parties. Sheets shall be examined in accordance with 5.3.4.2.2 Length and width Nominal length , l n , and nominal width , b n , of sheets shall be agreed between the interested parties. Unless agreed differently, the length shall be in the direction of extrusion. For any individual sheet selected at random from any delivery, the tolerances on length and width shall be in accordance with table 1 . Testing shall be in accordance with 5.4.2.4.2.3 Rectangularity For any individual sheet, selected at random from any delivery, the rectangularity tolerance expressed as the difference between the length of the diagonals ( d 1 – d 2 , see figure 1 ) shall be in accordance with table A.1 of annex A (normative) 5 Test methods 5.1 Test specimens 5.1.1 Preparation...