ISO 2286-2-2016 pdf free download

ISO 2286-2-2016 pdf free download.Rubber- or plastics-coated fabrics — Determination of roll characteristics — Part 2:Methods for determination of total mass per unit area, mass per unit area of coating and mass per unit area of substrate
Supports textiles revêtus de cuoutchouc ou de plastique — Determination des caractéristiques des rouleaux — Partie 2: Méthodes de déterm (nation de la masse surfacique totale, de la masse surfacique du revêtement et de la masse surfacique du support.
4 Determination of mass per unit area of substrate
CAUTION — Some of the solvents used may be toxic, flammable or otherwise hazardous. Care in the handling of such materials must be exercised. The inhalation of vapours should be avoided. Suitable protective clothing, including gloves and goggles, should be worn when appropriate. It is recommended that a suitable eyewash be kept in a position convenient for use. Any further precautionary measures recommended by the solvent manufacturer should be followed.
4.1 General
The procedure specified for removing the coating from the substrate cloth is governed both by the nature of the coating and by the nature of the substrate, and indeed for some types of coating there will be no known method of removal. Where this is the case, it shall be reported in the test report.
4.2 Principle
The coating is removed with a stripping agent from the same test pieces as were used for the determination of the total mass per unit area. The stripped test pieces are dried, conditioned and weighed. The procedure is repeated until constant mass is reached.
4.3 Reagent
4.3.1 Suitable solvent system (stripping agent), which has no solvent or chemical action on the substrate. Particular care shall be taken if there are bonding agents or finishing treatments on the substrate which are not essentially part of the coating but which might be removed with it [e.g. bonding agents in nonwoven (bonded-fibre) fabrics, rot-proofing agents, etc.]. If it is known or suspected that such an agent has unavoidably been removed with the coating, this shall be reported in the test report.
NOTE A suitable solvent system can be an organic solvent, a mixture of organic solvents, water or an aqueous solution (see AnncxA).
4.4 Apparatus
The same apparatus as described in 11 is required.
4.5 Procedure
4.5.1 Dissolve the coating from each test piece separately. In many cases, the bulk of the coating may be successfully removed mechanically after moistening the substrate with the stripping agent. ISO 2286-2-2016 pdf free download.