4. Observed crimping faults, correlation between tightness and dimensional measurements of crimps
4.1 Main crimping defects and their causes
Dimensional defects (measured dimensions) do not represent the majority of defects. Many of the defects encountered are visual defects observable on the outside of the seam (sharp edges, roller or mandrel marks, sharp seams, etc.) or defects observed visually after stripping (corrugations, folds, pimples, etc.).
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The causes of these crimping defects are divided into :
incorrect crimper settings;
occasional technical problems (jamming, poor centering of feeder bottoms, etc.);
quality defects in the cans themselves or in the crimping ends: damaged crimping edge, poorly applied seam,...
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Observed crimping faults, correlation between tightness and dimensional measurements of crimps
Bibliography
Software tools
Serti on line, CETIM, 52, avenue Félix – Louat – CS 80067 – 60304 Senlis Cedex
Websites
Azaquar – General information on crimping http://www.azaquar.com/doc/sertissage-des-bo%C3%AEtes-m% C3%A9talliques
EMPAC – European Metal Packaging http://empac.eu/
Recommendations for crimp dimensions...
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Crimping machine manufacturers
SCIM http://www.scim.fr/
FERRUM http://www.ferrum.net/en/gbc/index.php
Crimp inspection equipment...
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