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    Boilable bakeable package and method
    1.
    发明授权
    Boilable bakeable package and method 失效
    可燃包装和方法

    公开(公告)号：US3866816A

    公开(公告)日：1975-02-18

    申请号：US32610473

    申请日：1973-01-23

    申请人： ROBALEX INC TRUSTEE

    发明人： BEMISS ROBERT P

    IPC分类号： B29C33/10 ,  B29C51/16 ,  B65B1/02 ,  B65D5/56 ,  B65D81/34 ,  B65D15/22

    CPC分类号： B65B1/02 ,  B29C33/10 ,  B29C51/162 ,  B65D5/56 ,  B65D81/3415 ,  Y10S229/903

    摘要： A laminated or multi-layer wall tray is provided which has a self-supporting outer layer or wall portion of paperboard which can be formed and handled as an independent self-supporting unit during manufacture of the laminated tray. A plastic liner is heat-vacuum formed into the paperboard tray or carton to provide a boilable, bakeable, liquid-tight, leakproof lining for the tray which in its entirety is of a boilable or bakeable character, and to provide a strengthened structure of the composite tray of the outer paperboard supporting structure and inner plastic film liner in supporting structure. Both the liner and the paperboard are preferably made of a thinness of caliper of a dimension less than can be normally employed in such structures when used alone. At the bottom the paperboard outer structure has certain formed indents around its bottom corner edge which provide resting portions or stops for nesting of the tapered trays to be handled as a stack, and also provide exit openings or vents for air from within the carton or tray at required positions to the outside during the thermo-vacuum forming of the liner. The method of fabricating or combining the components of such a tray comprises the steps of forming the outer paperboard structure or layer with the corners locked or secured together in self-supporting fashion to receive the plastic liner by thermo-vacuum forming process drawn inside of the self supported paperboard outer structure to correspond identically to the inner profile of the paperboard container thereby locking and if desired, adhering the molten plastic material to the inside paperboard structure. A laterally horizontally extending flange may be provided around the upper edge of either the paperboard or the plastic, or both.

    摘要翻译： 提供层叠或多层壁托盘，其具有自支撑外层或纸板的壁部分，其可以在制造层压托盘期间作为独立的自支撑单元形成和处理。 塑料衬垫被热真空地形成在纸板托盘或纸箱中以提供用于托盘的可煮沸，可烘烤，液密的防漏衬里，其整体上具有可煮沸或可烘烤的特性，并且提供加强的结构 外部纸板支撑结构的复合托盘和支撑结构中的内塑料薄膜衬垫。 衬垫和纸板都优选由尺寸小于当单独使用时在这种结构中通常使用的尺寸的厚度制成。 在底部，纸板外部结构在其底部角边缘周围具有一定的成形凹痕，其提供用于嵌套作为堆叠处理的锥形托盘的搁置部分或止动件，并且还为纸箱或托盘内的空气提供出口或通风口 在衬套的热真空成形期间到达外部的所需位置。 制造或组合这种托盘的部件的方法包括形成外部纸板结构或层的步骤，其中角部以自支撑方式被锁定或固定在一起，以通过在真空成形过程中绘制的热真空成形工艺接收塑料衬套 自支撑纸板外部结构与纸板容器的内部轮廓相同地对应，从而锁定，并且如果需要，将熔融的塑料材料粘附到内部纸板结构。 可以围绕纸板或塑料的上边缘或两者设置横向水平延伸的凸缘。