ISO 7322:2014 pdf free
ISO 7322:2014 pdf free.Composition cork一Test methods
ISO 7322 specifies test methods for the determination of the following characteristics of composition cork:
– thickness,
– apparent density,
– tensile strength,
– compressibility and recovery,
– resistance to boiling water.
This International Standard is applicable to the product in sheet or roll form.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2859-1, Sampling procedures for inspection by attributes一Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 composition cork
product obtained from the agglutination of cork granules with the addition of a binder generally not derived from cork cells
3.2 rubbercork
product manufactured as a compound of cork granules and rubber, which can be used either in the form of granules or as a binder
From each lot, the number of packages, at least three, and the quantity of material to be taken from the sample shall follow ISO 2859-1 for the inspection level agreed between parties.
5.2 Preparation of test specimen
From each sheet of the material, cut the test specimens as indicated in Table 1, at least 100 mm away from the edges. Each test specimen shall be squarely cut with the edges perpendicular to its surface, showing no cracks or folds.
5.3 Conditioning
Test specimens shall be conditioned for 48 h at 23。C. In case of dispute, the test specimens shall be conditioned at a temperature of (23±2) °C and (50±5) % of relative humidity, for 48 h. Unless otherwise specified, the tests shall be carried out at the same temperature and humidity conditions.
Place one test specimen on the fixed plate of the static press (4.1). Apply the indentor (4.1.1) without shock at the centre of the test specimen and apply the mass defined in Table 2, in accordance with the type of composition cork concerned. After 15 s, read the thickness in the dial gauge (4.1.2).
For test specimens with thicknesses greater than 10 mm, a Vernier gauge (4.5) shall be used.ISO 7322 pdf download.
