INSULATED HEAT SEALING JAW
    32.
    发明授权
    INSULATED HEAT SEALING JAW 失效
    绝缘热封JAW

    公开(公告)号:EP0573447B1

    公开(公告)日:1994-11-30

    申请号:EP92903948.5

    申请日:1992-02-07

    发明人: RILEY, David, C.

    IPC分类号: B29C65/22

    摘要: A heat sealing assembly, for sealing at least two layers of thermoplastic film, is disclosed. It comprises a first jaw (11) and a second jaw (not shown), an electrical impulse heat sealing element (12) mounted on the first jaw (11), electrical terminals (17) connected to the element (12), and at least one electrically and thermally insulating film or tape (14) between the first jaw (11) and the heat sealing element (12). At least one of said jaws is capable of transverse motion and is adapted to collapse a tubular film made from the thermoplastic film and passing between said jaws. The improved heat sealing assembly has a first jaw (11) which has a thermally insulating material (16) embedded therein along a length about equal to the width of the flattened film and having a width at least as great as the width of the sealing element.

    摘要翻译: 公开了用于密封至少两层热塑性膜的热密封组件。 它包括第一钳口(11)和第二钳口(未示出),安装在第一钳口(11)上的电脉冲热密封元件(12),连接到元件(12)的电端子(17) 在第一钳口(11)和热密封元件(12)之间的至少一个电绝缘薄膜或绝热薄膜(14)。 所述夹爪中的至少一个能够横向运动并且适于使由热塑性薄膜制成并且在所述夹爪之间穿过的管状薄膜塌陷。 改进的热封组件具有第一钳口(11),该第一钳口(11)具有沿着大约等于扁平膜的宽度的长度嵌入其中的热绝缘材料(16),并且其宽度至少与密封元件 。

    Fluted plasticboard sealing method and apparatus
    34.
    发明公开
    Fluted plasticboard sealing method and apparatus 失效
    Verfahren und Vorrichtung zum Verschliessen der Stirnseiten von Stegdoppelplatten。

    公开(公告)号:EP0537753A1

    公开(公告)日:1993-04-21

    申请号:EP92117655.8

    申请日:1992-10-15

    IPC分类号: B29C67/00

    摘要: The open edge (5) of a plasticboard (1) is moved into a heating and sealing unit (13) having a metal form (14) with a U-shaped cross-section. A spacing tape (27) and a release tape (28) line the metal form (14). An induction or resistance heater (15) is coupled to the metal form (14) to raise the temperature thereof and heat the open edge to form a molten plastic (30) edge wall, with the outer edges of the edge wall (5) in sealing engagement with the form (14). The molten plastic (30) fills the cavity (29) between the form (14) and the edge wall (5) and forms a solid, continuous end wall (16) upon cooling of the molten plastic (30). A batch sealing unit (13) has a form moved directly into engagement with the edge wall (5) to be sealed. A continuous sealing unit (37) has an elongated form (40). A conveyor (38) moves the plasticboard (1) through the form (40) in a continuous flow path with the form (40) inclined to the path of the edge board to establish relative lateral movement. A cooling unit (35, 46) cools the end wall (16) as the board moves from the form. A release unit (28, 50) is located between the heating and sealing unit (13, 37) and the edge wall (5) to insure release from the sealing unit (13, 37) and to accommodate any offset surface portion in the edge wall (5) and thereby totally confine molten plastic (30) and form a smooth end wall (16).

    摘要翻译: 将塑料板(1)的开口边缘(5)移动到具有U形横截面的具有金属形式(14)的加热和密封单元(13)中。 间隔带(27)和释放带(28)沿金属形式(14)排列。 感应或电阻加热器(15)联接到金属形式(14)以升高其温度并加热开口边缘以形成熔融塑料(30)边缘壁,边缘壁(5)的外边缘处于 与形式(14)的密封接合。 熔融塑料(30)填充形式(14)和边缘壁(5)之间的空腔(29),并在冷却熔融塑料(30)时形成固体连续的端壁(16)。 批量密封单元(13)具有直接与待密封的边缘壁(5)接合的形式。 连续密封单元(37)具有细长形式(40)。 输送机(38)将塑料板(1)通过模板(40)以连续的流动路径移动,其中模板(40)倾斜于边缘板的路径以建立相对的横向运动。 当板从形式移动时,冷却单元(35,46)冷却端壁(16)。 释放单元(28,50)位于加热和密封单元(13,37)和边缘壁(5)之间以确保从密封单元(13,37)释放并且容纳边缘中的任何偏移表面部分 从而完全限制熔融塑料(30)并形成平滑的端壁(16)。