(57) The invention concerns the construction of tanks with inner lining from appropriate
polymer material, which (i.e the lining) has the form of a jacket and a shape similar
to the corresponding tank, for the purpose of corrosion or other kind of protection
of the inner side of the tanks from liquids which are stored or circulated through
the tanks.
The use of internal jacket from polymer material (12), in direct contact with the
walls of the tanks, creates a new product which can have many applications and as
an example only reference is made to the storage water heaters (solar, electric, etc.)
where the need of the corrosion protection of the tanks is satisfied by the use of
the internal jacket from polymer material which is resistant to corrosion, while the
need for strength to hydraulic pressure is satisfied by the tank itself (usually made
out of steel) and this combination has important economical and technical advantages.
The basic method for the production of the new product, in accordance with the invention,
includes either the production of a tank from a pre-constructed jacket from polymer
material (12)(i.e. polyethylene, polypropylene, etc.), which (jacket) is enclosed
by the various parts of the tank (13,14,15), whose parts are assembled by welding,
screws, etc., or the production of the tank by forming the jacket from polymer material
directly inside the tank.
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