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    Process for preparing a sealed laminated vessel
    1.
    发明授权
    Process for preparing a sealed laminated vessel 失效
    制备密封层压容器的方法

    公开(公告)号：US4692132A

    公开(公告)日：1987-09-08

    申请号：US829938

    申请日：1986-02-18

    申请人： Fumio Ikushima ,  Senji Itoh ,  Kiyonori Kogashiwa

    发明人： Fumio Ikushima ,  Senji Itoh ,  Kiyonori Kogashiwa

    IPC分类号： B65D3/14 ,  B65D3/22 ,  B65D8/18 ,  B65D8/22 ,  B31B9/64 ,  B31B1/90

    CPC分类号： B65D3/14 ,  B65D3/22

    摘要： A sealed laminated vessel is formed from a barrel composed of a laminate including a paper substrate and a metal foil with inner and outer heat-sealable resin layers on both surfaces lapped together to form a straight side seam and a lid member on at least one open end thereof formed from a laminate of a metal foil and heat-sealable resin layer which is heat sealed to a circumferential end edge portion of the barrel. The vessel is formed by a process which includes forming a flat circumferential end portion of the barrel by bending at least one open end of the barrel outwardly and thereafter inwardly bending a part of the bent portion in the reverse direction so that it is lapped on the lower side of the remaining part of the bent portion to form a flat circumferential end portion on at least one open end of the barrel.The lid member is thereafter heat-sealed to the circumferential portion of the barrel through the heat-sealable resin layer of the lid member. Finally, the heat-sealed portion of the lid member and the circumferential end portion of the barrel are mechanically lap-seamed using a molding roller having a section conforming to the final shape of the sealed portion. As a result a horizontal flange wall in the peripheral portion of the lid member is downwardly bent together with the circumferential end portion of the barrel. Accordingly, heat sealing is uniformly effected and the sealing property is further improved by the mechanical lap seaming to form a tightly sealed laminated vessel.

    摘要翻译： 密封层压容器由包括纸基材和金属箔的层压体构成的桶形成，所述层压体在两面上具有内外热可密封树脂层，所述双层表面在一起形成直边接缝，并且在至少一个开口 其端部由金属箔和可热封树脂层的层叠体形成，该层压体被热密封到筒的周向端部边缘部分。 容器由一种方法形成，该方法包括通过将筒的至少一个开口端向外弯曲而形成圆筒的平坦圆周端部，然后向内弯曲弯曲部分的一部分，使其在 弯曲部分的剩余部分的下侧在筒的至少一个开口端上形成平坦的圆周端部。然后，盖构件通过可热封的树脂层热封到筒的圆周部分 盖构件。 最后，使用具有符合密封部分的最终形状的部分的成型辊将盖部件的热密封部分和筒体的周向端部机械地搭接。 结果，盖构件的周边部分中的水平凸缘壁与筒的周向端部一起向下弯曲。 因此，通过机械搭接接合来形成密封的层压容器，能够均匀地进行热封，并进一步提高密封性。