Metallic extruded tube, aerosol can and method of...

B - Operations – Transporting – 65 – D

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B65D 35/10 (2006.01) B05B 13/06 (2006.01) B65D 35/06 (2006.01) B65D 35/14 (2006.01) B65D 83/14 (2006.01) B65D 83/38 (2006.01)

Patent

CA 2239179

A collapsible metal tube, comprising: a metal body portion susceptible of plastic deformation, said body portion being sealed at one end; a shoulder portion and a mouth/neck portion connected to the other end of said body portion; and a resin film provided on the inside wall surface of the body portion, said resin film comprising a metal-adhesive thermoplastic resin layer formed by spray--coating the inside wall surface of the body portion with a dispersion of fine spherical particles consisting of a metal-adhesive thermoplastic resin and then heating to integrate said particles. The resin film formed on the inside of the collapsible metal tube is reliable because it is a dense resin film virtually devoid of pinholes, excellent in elongation at break, and free from cracking when folded or deformed, and is excellent in ability of protecting the metal body portion and the contents.

Tube métallique extrudé qui comporte une partie tambour métallique se laissant facilement déformer plastiquement et fermée à une extrémité, un épaulement contigu à l'autre extrémité de la partie tambour et un goulot, ainsi qu'un film de résine doté d'une couche de résine thermoplastique possédant une propriété d'adhérence aux métaux, formée par projection d'une dispersion de grains fins sphéroïdes composée d'une résine thermoplastique ayant une propriété d'adhérence aux métaux sur la surface interne de la partie tambour, puis par chauffe et fusion des grains. Le film de résine formé sur le tube métallique extrudé est compact et presque exempt de piqûres, possède un excellent pourcentage d'étirement jusqu'au point de rupture, est extrêmement fiable du fait qu'il ne se craquelle pas en raison de déformations telles que le pliage et possède une excellente fonction protectrice de la partie tambour métallique et de son contenu.

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