BS ISO 633:2019 pdf download – Cork — Vocabulary

BS ISO 633:2019 pdf download – Cork — Vocabulary This document defines cork as a raw material for the industry, as well as the terms to be used in describing the different forms in which cork can be found. This document also indicates the terms and definitions concerning its main products, some of the operations to which cork can be submitted and anomalies that can be associated with it. 2 Normative references There are no normative references in this document. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 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/ 3.1 Cork 3.1.1 Constitution 3.1.1.1 cork protective layer of bark which, periodically, can be harvested from the trunk and branches of the cork oak (Quercus suber L.) constituting the raw material for cork products 3.1.1.2 layer vein suberous tissue produced during a one yearly growth cycle of the cork oak, comprising a high-coloured large softer band formed at the beginning of the year, the spring layer, and a thinner darkish band grown towards the end of that year, the autumn layer Note 1 to entry: The number of layers formed from the beginning of the cork’s growth determines the number of years of the cork bark, i.e. its “age”. 3.1.1.3 lenticel radial canals which allow essential gaseous exchanges between the tree tissues and the atmosphere 3.1.1.4 pore opening of the lenticels (3.1.1.3), in cross-section Note 1 to entry: The surface of the lenticels in cross-section is called porosity. This surface is taken into account when visually classifying the cork stoppers (3.4.1.3). 3.1.2.4 boiled cork waste low quality second reproduction cork (3.1.2.2.2) who has undergone boiling (3.3.2) process, making it suitable as raw material for the production of cork granules (3.6.1.3) for the cork stopper industry (3.3.9) 3.1.2.5 deadwood cork virgin cork (3.1.2.1) or reproduction cork (3.1.2.2) stripped from recently felled trees or from cut off branches deriving from maintenance or prophylactic pruning 3.1.2.5.1 hatchet virgin cork adze virgin cork virgin cork (3.1.2.1), originally obtained either by stripping (3.1.1.8) the bark after cutting it with an adze or a hatchet, or by mechanical stripping along the axis of the branches, still showing fragments of inner bark and/or lignified tissue 3.1.2.6 cork piece piece of virgin cork (3.1.2.1)...