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    • 7. 发明授权
    • Process for making windowed form, fill and seal bags
    • 制作窗口形状,填充和密封袋的过程
    • US5410857A
    • 1995-05-02
    • US230512
    • 1994-04-20
    • Wayne S. Utley
    • Wayne S. Utley
    • B65B9/00B31B19/00B31B19/88B31B23/74B31B39/00B65B1/02B65B61/02B65B61/00B65B43/04
    • B65B1/02B31B21/00B31B37/00B65B61/025B31B2219/88B31B2219/90B31B2219/9038B31B2221/10B31B2237/05Y10T156/108Y10T156/1085
    • A process for making windowed form, fill and seal bags (70) for containing perishable and/or nonperishable goods involves linearly conveying an endless strip of paper-like material (12) through an adhesive application station (14) which applies adhesive to an adhesive side (18) of the endless strip of paper-like material throughout, with the exception of a window area (34) on each individual bag form (36a, b, c, etc.) making up the endless strip. The endless strip is then conveyed through a synchronized window-blanking station (44) which cuts a window blank (54) from each window area so as to form a window opening (50) therein. The adhesive side is then adhered to a transparent plastic heat-sealable film (58). Side edge margins (32) are slit from the endless strip of paper material to leave a composite endless form (10) for, in turn, making the flexible windowed, form, fill and seal bags (70) for containing perishable and/or nonperishable goods. To make these bags, the individual bag forms (36a, b, c, etc.) are cut from the composite endless form material and folded so that the heat-sealable film (58) is in contact with itself at overlapping edges of the bag form and these edges are then heat-sealed together.
    • 用于制造窗口形状,填充和密封用于容纳易腐坏和/或不易腐烂物品的袋子(70)的方法涉及通过粘合剂施加站(14)线性地输送纸状材料(12)的环形带,其将粘合剂施加到粘合剂 除了构成环形带的每个单独的袋形式(36a,b,c等)上的窗口区域(34)之外,贯穿纸状材料的环形带状材料的侧面(18)。 然后将环形带材通过同步的窗口冲裁台(44)传送,该窗口冲裁站从每个窗口区域切割窗口坯料(54),以便在其中形成窗口(50)。 然后将粘合剂侧粘附到透明塑料可热封膜(58)上。 边缘边缘(32)从环形纸材料上切开,以留下复合的环形形式(10),从而进一步使柔性窗口化,形成,填充和密封用于容纳易腐坏和/或不易腐烂的袋子(70) 产品。 为了制造这些袋,从复合环形材料切割单个袋形状(36a,b,c等)并折叠,使得可热封膜(58)在袋的重叠边缘处与其自身接触 然后将这些边缘热封在一起。