(57) A freezing mould bag (10) comprises two sheets (12, 14) which are joined together
in substantially overlapping relationship along the periphery of the sheets, defining
a plurality of mould compartments (24) within the interior of the freezing mould bag.
An inlet channel defined by joints (28, 30, 32) extends from the mould compartments
(24) to an inlet opening (26). Two closure valve flaps (16, 18) are connected to the
sheets (12, 14) at the inlet opening (26) and extend from the inlet opening within
the inlet channel. The inlet channel comprises a first and a second segment, which
first segment is of a configuration tapering from the inlet opening (26) towards the
mould compartments, and which second segment has dimensions so as to to no substantial
extent hinder liquid or water from flowing through the second segment. At the transition
between the first and the second segment of the inlet channel, a constriction is defined,
serving the purpose of generating a venturi effect for generating a relative pressure
drop within the constriction for closing the inlet channel at the constriction as
liquid or water is flowing from the second segment of the inlet channel through the
constriction towards the first segment.
|
|
