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    • 5. 发明公开
    • Window for spirally formed containers
    • 一种用于生产具有一个窗口多层容器的方法
    • EP1057733A1
    • 2000-12-06
    • EP00304641.4
    • 2000-05-31
    • Sonoco Development, Inc.
    • Nelson, Brian E.Lowry, James L.
    • B65D3/22B65D25/54B31B1/82
    • B65D25/54B31B50/83B31C3/00B31C3/02B31C3/04B65D3/22
    • A container having a window for viewing the product contained therein and an associated method of manufacture is provided. The container (10) is constructed of at least one body ply (12) and a liner ply (14). The body ply (12) defines at least one aperture (16) therethrough such that when the body ply (12) is wrapped into a tubular shape the aperture (16) forms a window through the body ply (12) into the container. The liner ply (14) extends across the aperture (16) in the body ply (12) and has a sufficiently low opacity that allows the product in the container to be viewed through the window. The liner ply (14) provides a moisture and gas barrier inside the container around the product. The container may include a label ply (15). The label ply (15) defines at least one aperture therethrough. The cutting of the at least one aperture in the label ply (15) is registered. The body ply (12) defines at least one aperture therethrough corresponding to the at least one aperture in the label ply (15). The body ply (12) is wrapped around the previously wrapped liner ply (14) on the mandrel (26) and then the label ply (15) is wrapped around the previously wrapped body ply (12) and liner ply (14) so that the apertures in the label ply (15) are aligned with apertures in the body ply (12) to create a tubular shape having a viewing window through both body plies.
    • 10. 发明公开
    • Polymeric liner ply for tubular containers and methods and apparatus for manufacturing same
    • 用于管状容器和方法和设备用于制造管状容器聚合物涂层
    • EP0857567A2
    • 1998-08-12
    • EP98300817.8
    • 1998-02-04
    • SONOCO PRODUCTS COMPANY
    • Cahill, Glenda J.Gainey, Gerald W.
    • B31C3/00B65D3/00
    • B65D3/22B31C3/00B31C3/02B31C3/04Y10S206/83Y10T156/1739Y10T428/1303Y10T428/1307Y10T428/139Y10T428/2826Y10T428/2848Y10T428/2878Y10T428/2891
    • A method of manufacturing multi-ply tubular containers for food products is provided including the steps of advancing a continuous body ply formed of paperboard towards a shaping mandrel and advancing a continuous polymeric liner ply adjacent to one surface of the paperboard body ply. The polymeric liner ply includes a moisture barrier layer and an adhesive layer defining one surface of the liner ply, wherein the adhesive layer includes a polymeric adhesive which is activated at a predetermined activation temperature. The body ply is heated to a temperature above the activation temperature of the adhesive, and the body ply and the liner ply are then passed in face-to-face contact through a nip to adhere the liner ply to the body ply. The body ply and liner ply are then wrapped around a shaping mandrel to create the tubular container. Accordingly, an advantageous tubular container can be manufactured having an unsupported and polymeric liner ply which is adhered to a body ply without the application of any separate adhesives.
    • 提供了一种制造多层管状容器用于食品的方法,其包括推进的连续体帘布层朝向成形型芯上形成的纸板和推进连续衬套帘布层聚合物毗邻纸板体帘布层的一个表面上的步骤。 聚合物衬垫层包括在所述衬垫层的一个界定表面,worin粘接层包括聚合物粘接剂的所有这些在预定的活化温度活化的湿气阻挡层和粘合层。 胎体帘布层被加热到高于粘合剂的活化温度的温度,并且胎体帘布层和内衬层,然后在面 - 面接触通过的辊​​隙粘附衬套帘布层胎体帘布层。 胎体帘布层和内衬层,然后围绕成形心轴缠绕以创建管状容器。 因此,在有利的管状容器可以具有不支持的和聚合物衬层帘布层的所有其被粘附到胎体帘布层无需任何单独的粘合剂的应用来制造。