| 摘要 |
A freezing mould bag is described. The bag is formed of two sheet-shaped film pieces which are welded together for forming freezing mould compartments. A filling duct is delimited by separate joints, enabling filling of the inner compartment of the bag. There are provided closing valve flaps that are connected with the film pieces at the filling opening in such a way that two closing pockets, which open towards the inner compartment of the bag, are provided. The joints at the freezing mould compartments are broken for establishing communication with an expansion chamber which is delimited by further joints of the two film pieces. With the object of using such a self-closing bag as a knot tie bag, the freezing mould bag is provided with a material weakening of the superposed film pieces at each their side of the filling duct. The material weakenings are provided at an angle relative to the joint delimiting the freezing mould compartments. Thus it is possible to have expansion chambers at a position under the material weakenings. The material weakening runs from the side edges of the freezing mould compartment to a position near the mouth of the filling duct in the inner compartment. By such a freezing mould bag, application as a self-closing bag or a knot tie bag is possible. |
