(57) A dispenser of viscous products comprises an outer container (1), extending along
a longitudinal axis (X-X) which would generally lie vertical, with at least one elastically
deformable side wall (6,7), a closed bottom (2), and a top (3) provided with an opening
(4) defined by a rim (5), a flexible bag (13) placed inside said outer container (1),
said bag (13) having a mouth (12) and being intended for containing the viscous product,
a plate-like element (8) positioned across the opening (4) in the container (1) top
and being connected to the rim (5) of the latter, said plate-like element (8) being
provided with an axial passageway, (10) parallel to the longitudinal axis (X-X) of
the outer container (1), having a collar (11) projected inwardly of said outer container,
said bag (13) having its mouth (12) sealed around said collar (11), a head (27) provided
in its inner side with a viscous product delivery conduit (28) which has one end (30)
provided with a delivery orifice (29) and an opposite end (32) provided with an inlet
orifice (31) in communication with the axial passageway (10) through said plate-like
element (8), said head (27) including connecting means (37) for being connected to
the rim (5) of the opening (4) in the top of said outer container (1), a first one-way
valve means (34) placed in said viscous product delivery conduit (28) and opening
in the direction toward said delivery orifice (29), and a second one-way valve means
(25) opening in the direction toward the inner side of the outer container (1).
The dispenser includes a bag opener consisting of two pairs of elastically divergent
legs (16,17,16a,17a) projecting from an annular support (15) connected to said plate-like
element (8), said legs extending inside said bag (13) and applying a pressure force
to the bag (13) directed toward the outer container (1).
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