Compound dip process for metal cans

B - Operations – Transporting – 21 – D

Patent

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B21D 51/26 (2006.01) B05D 1/18 (2006.01) B21D 51/30 (2006.01)

Patent

CA 2208526

The technical field of the invention is the application of sealant onto or into a folded-seam closure (D) of a metal can. Such sealants have previously been introduced into the U-shaped lid flange and dried. By contrast, the invention proposes that the compound - the sealant (10) - be applied (10a) to the base flange (1a), the base (1) of the metal can being dipped into a current of fluid sealant (10) or at least brought into contact with it at the surface. This substantially improves the precision of the dosing and the exact amount of applied sealant.

L'invention concerne un procédé d'application au trempé d'un produit d'étanchéité sur le système de fermeture sertie (D) d'une boîte métallique. Jusqu'à maintenant, ce type de produits d'étanchéité étaient introduits dans le bord en U du couvercle, puis séchés. Selon l'invention, il est prévu d'appliquer (10a) le produit d'étanchéité (10) sur le bord du fût (1a) de la boîte métallique, ce dernier (1) étant plongé de haut en bas dans un courant de fluide d'étanchéité (10) ou sa surface étant mise en contact avec lui. Ce procédé permet d'améliorer sensiblement la précision du dosage et d'obtenir par conséquent un volume plus précis du produit d'étanchéité à appliquer.

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