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CN102216054A 用于检测密封条施加到食品包装材料的幅带上的位置的设备和方法 失效 - 权利终止

用于检测密封条施加到食品包装材料的幅带上的位置的设备和方法
Abstract:
本发明描述了一种用于检测热密封塑性材料制成的密封条(7)施加到食品包装材料的多层幅带(3)上的位置的设备(10，10′)，所述幅带沿预定路径(P)前进并且包括用于提供硬度和强度的至少一个基层和一个或多个热密封塑性层；所述密封条(7)具有施加到幅带(3)的纵向边缘(8)上的第一纵向部分(42)和从纵向边缘(8)横向伸出的第二纵向部分(43)。所述设备(10，10′)包括光源(45，45′)，其构造成在幅带(3)沿其路径(P)运动期间照射幅带(3)的横向部分；以及传感器(46，46′)，其在使用中检测与形成幅带(3)和密封条(7)的材料对曝光的不同特性相关的量(I，F)，并产生与密封条(7)的第二部分(43)的沿方向(X)的宽度相关的输出信号(W)，所述方向(X)垂直于幅带(3)的行进方向并平行于幅带(3)。
Abstract(English):

There is described an apparatus (10, 10') for detecting the position of application of a sealing strip (7) of heat-seal plastic material onto a multilayer web (3) of packaging material for food products advanced along a predetermined path (P) and including at least one base layer for stiffness and strength and one or more heat-seal plastic layers; the sealing strip (7) has a first longitudinal portion (42), applied onto a longitudinal edge (8) of the web (3), and a second longitudinal portion (43) projecting laterally from the longitudinal edge (8). The apparatus (10, 10') comprises a light source (45, 45'), configured for irradiating a transversal portion of the web (3) during movement thereof along its path (P), and a sensor (46, 46') in use detecting a quantity (I, F) related to the different behavior of the materials forming the web (3) and the sealing strip (7) to light exposure and generating an output signal (W) related to the width of the second portion (43) of the sealing strip (7) in a direction (X) orthogonal to the travelling direction of the web (3) and parallel to said web (3).

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