Revised standard FEA 216 and new standard FEA 651 are now available
Revised standard FEA 216 and new standard FEA 651 are now available.
FEA 216 – Metal aerosol containers – Dimensions of the bearing surfaces of clinching jaws
Clinch collets are the main tool enabling the deformation of valve cups by spreading symmetric segments. This tool is used in the assembly operation (called crimping, clinching or swaging) of valves to metal containers: – using valve cups according to standard EN 14848 – to aerosol containers with 25.4 mm aperture according to standard EN 14847 This standard solely covers the form of the bearing surfaces of the clinching jaws and their diameter in closed and open (expanded) condition. The application of collets according to this present standard represents one of the essential conditions for the secure closure of aerosol packages. This standard contains dimensions of the bearing surfaces of clinching jaws, which have been proven successful in practice. During application of clinching jaws the following points are to be constantly and carefully controlled: – the quality of the closure achieved therewith, visually and metrologically, – any change of condition of the clinch tool during use, and – performing tool adjustments required as a consequence of collet wear.
FEA 651 – Metal aerosol containers and valves – Assessment of internal coating coverage
Coatings are used for the protection of metals from corrosive influences. These tests provide the means to evaluate the integrity of coverage of a coating applied to the internal surfaces of a metal aerosol container or a valve’s mounting cup. One test relies on the chemical interaction between a reagent and any exposed metal surface, the other on measuring electrical conductivity. Whilst these tests are suitable for checking or control use, either by manufacturer or user, it is not intended as a basis for indicating the potential shelf life of new formulations.
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