6. Glossary
crossing; overlap
Distance inside the seam delimited by the juxtaposition/superimposition of the 2 hooks (bottom hook and body hook).
hook balance
Also known as the distance between hooks, subtraction between the length of the body hook and the length of the bottom hook (Cc – Cf).
ripples; wrinkles end hook
Frowns can be observed on the bottom hook, caused by the action of winding a circular crimping edge. Excess metal can form ripples if the crimping operation is not carried out correctly.
percent body hook butting; per cent body hook butting
Formula (fraction) whose numerator is the Internal Body Hook (Ci) and denominator the Internal Seam Length (Fc), which guarantees a good fit of the body hook to the crimped interior...
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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/
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