Container with antistatic layer

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 88/00 (2006.01)

Patent

CA 2729213

Container for dry powders, granules, pel-lets, gas and other ignitable substances and method of producing the same The container comprises a wall (11-13) formed by a spirally wound profile having an open cross-section, wherein adjacent windings of the profile are attached to each other According to the in-vention, the profile comprises a first thermoplastic layer forming the inner surface (11) of the profile and a second thermoplastic layer (12) placed about the first thermo-plastic layer and forming the outer surface of the profile, said second layer being antistatic The present containers have good mechanical strength properties and accumula-tion of electric charges inside the container can be effi-ciently avoided. The container can be used, e g, as a dri-er for material/powder/pellets

L'invention porte sur un contenant pour des poudres sèches, des granules, des pastilles, du gaz et autres substances inflammables, et sur son procédé de production. Le contenant comprend une paroi (11-13) formée par un profil enroulé en spirale dont la section transversale est ouverte, des enroulements adjacents du profil étant fixés entre eux. Selon l'invention, le profil comprend une première couche thermoplastique formant la surface interne (11) du profil et une seconde couche thermoplastique (12) disposée autour de la première couche thermoplastique et formant la surface externe du profil, ladite seconde couche étant antistatique. Les présents contenants ont de bonnes propriétés de résistance mécanique, et une accumulation de charges électriques à l'intérieur du contenant peut être efficacement évitée. Le contenant peut être utilisé, par exemple, en tant que séchoir pour matériau/poudre/pastilles.

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