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    • 3. 发明授权
    • Caulking method for forming a leak free cup
    • 用于形成无泄漏杯的填缝方法
    • US4836400A
    • 1989-06-06
    • US193796
    • 1988-05-13
    • Wayne P. ChaffeyJoseph J. VaxmonskyDavid L. WagnerWarren G. Wiedmeyer
    • Wayne P. ChaffeyJoseph J. VaxmonskyDavid L. WagnerWarren G. Wiedmeyer
    • B31B17/00B65D3/10B65D3/28
    • B65D3/10B65D3/28B31B2217/082
    • A method for forming a leak free container, such as a paper cup, including a sidwall having a lap joint and a bottom wall connected to the sidewall by means of a bottom wall lap joint incorporating a portion of the sidewall lap joint wherein the method includes the step of applying caulking material, at a predetermined location, to one of the blanks forming the bottom and sidewall which location is selected to insure sealing of any void volume formed adjacent the sidewall lap joint within the bottom wall lap joint. Preferably, the caulking material will be a hot melt adhesive and will be employed in a cup making process involving the use of polyethylene coated paper stock. Careful control of the temperature, amount, location and viscosity of the hot melt during the lap joint forming process and of the heat and temperature used in the lap joint forming steps insure that the hot melt material ends up residing in precisely the appropriate location within the void volume. Also disclosed are a variety of cup designs in which the void volume is reliably caulked by means of the disclosed method. In the preferred design, the caulking material is placed exclusively in the exterior leg of a U-shaped void volume.
    • 一种用于形成诸如纸杯的无泄漏容器的方法,该纸杯包括具有搭接接头的侧壁和通过包含侧壁搭接接头的一部分的底壁搭接部连接到侧壁的底壁,其中该方法包括 在预定位置处将填缝材料施加到形成底部和侧壁的坯料之一的步骤,该位置被选择以确保在底壁搭接接头内邻近侧壁搭接接头形成的任何空隙体积的密封。 优选地,填缝材料将是热熔粘合剂,并且将用于涉及使用聚乙烯涂布纸原料的杯制造方法。 仔细控制搭接接头成型过程中热熔体的温度,数量,位置和粘度以及搭接接头形成步骤中使用的热和温度,确保热熔材料最终停留在精确的位置内 空隙体积。 还公开了各种杯设计,其中通过所公开的方法可靠地填塞空隙体积。 在优选的设计中,铆接材料仅放置在U形空隙体积的外腿中。