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    • 3. 发明申请
    • A METHOD AND AN APPARATUS FOR CALIBRATING PACKAGING CONTAINERS
    • 一种用于校准包装容器的方法和装置
    • WO1997018995A1
    • 1997-05-29
    • PCT/SE1996001420
    • 1996-11-05
    • TETRA LAVAL HOLDINGS & FINANCE S.A.PALM, Lars-Erik
    • TETRA LAVAL HOLDINGS & FINANCE S.A.
    • B65B61/24
    • B65B61/24
    • Packaging containers for liquid contents, for example milk, are normally manufactured from laminated packaging material including a carrier or core layer of fibre material which is coated on each side with plastic layers. In order to facilitate folding of the material, this is normally provided with a pattern of weakening crease lines which facilitate the reforming into the desired packaging container configuration. A method of retroforming or calibrating a packaging container for realising more accurate final configuration, sharper fold lines and thereby for imparting to the packaging container improved steadiness and stability comprises the steps of surrounding the packaging container (1) with a forming device (11) adapted to the final configuration of the packaging container, and of displacing parts (12, 13) of the forming device towards one another so that the free space for the packaging container is briefly reduced. An apparatus for carrying the method according to the present invention into effect comprises a forming device (11) with moving forming parts which, in the closed position, define a forming cavity of a volume which amounts to between 100 and 110 per cent of the theoretical minimum volume of a processed packaging container.
    • 用于液体内容物(例如牛奶)的包装容器通常由层压包装材料制成,该层压包装材料包括纤维材料的载体或芯层,每层涂覆有塑料层。 为了便于折叠材料,这通常具有弱化折痕线的图案,其有利于重整成所需的包装容器结构。 一种用于实现更准确的最终构造,更清晰的折叠线并由此赋予包装容器的包装容器的改进或校准的方法改进的稳定性和稳定性包括以下步骤:用适合于成型装置(11)包围包装容器(1) 包装容器的最终结构以及成形装置的部件(12,13)彼此相对移动,使得用于包装容器的自由空间被短暂地减小。 用于承载根据本发明的方法的装置实现包括具有移动成形部件的成形装置(11),所述成形装置在关闭位置中限定相当于理论值的100%至110%之间的体积的成形腔 经处理的包装容器的最小体积。