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2. 发明公开

KR1020000052878A 패키징 시이트상에 개방 장치를 성형하는 장치 및 방법 失效
标题翻译：包装材料上打开装置的装置和方法
公开(公告)号：KR1020000052878A
公开(公告)日：2000-08-25
申请号：KR1019997003733
申请日：1997-09-23
申请人： 테트라 라발 홀딩스 앤드 피낭스 소시에떼아노님
发明人： 구스타프손퍼 , 렌디나안토니오
IPC分类号： B29C45/14
CPC分类号： B29C45/14344 , B29C45/33 , B29L2031/565 , B29L2031/7162
摘要： PURPOSE: An apparatus and method is provided to mould opening devices onto a packaging material sheet at respective holes provided in the sheet. CONSTITUTION: An apparatus includes first and second mould tools (20, 22) arrangeable in a closed position so as to be in contact with opposite sides (24, 26) of the sheet and in an open position so as to be positioned distally from the sheet. In the closed positions a mould cavity (28) is formed between the first and second mould tools for accommodating a hole edge (30) in the sheet. The apparatus further includes an injection passage (36) for injecting heated thermoplastics material into the mould cavity, which injection passage extends in one of the mould tools such that the thermoplastics material is injected directly into the mould cavity at an injection point (38) of the mould cavity which is located distally from the hole edge, for providing effective formation of the opening device on the sheet. One of the mould tools includes a pair of half mould tools (22a, 22b) which are simultaneously moved from the open position to the closed position and vice versa such that the direction of movement of each of said half mould tools between the open and closed positions tangentially follows a circular path, for reducing wear of the mould tools. In the closed position of the mould tools, the sheet extends in a plane which is distally spaced from the plane of extension of the sheet in the open position aiding in release of the sheet and the moulded opening device from the mould tools.
摘要翻译：目的：提供一种设备和方法，用于将设置在片材中的相应孔处的打开装置模制到包装材料片上。构成：一种装置包括第一和第二模具工具（20,22），其可布置在关闭位置，以便与片材的相对侧面（24,26）接触并处于打开位置，以便远离片。在关闭位置，模具腔（28）形成在第一和第二模具之间，用于容纳片材中的孔边缘（30）。该装置还包括用于将加热的热塑性材料注入模腔中的注射通道（36），该注射通道在一个模具中延伸，使得热塑性材料在注射点（38）处直接注入模腔所述模腔位于所述孔边缘的远侧，用于在所述片材上有效地形成所述打开装置。其中一个模具包括一对半模具（22a，22b），它们同时从打开位置移动到关闭位置，反之亦然，使得每个所述半模具的运动方向在打开和闭合之间位置切向地遵循圆形路径，以减少模具的磨损。在模具的关闭位置，片材在与打开位置的板的延伸面向远侧间隔开的平面中延伸，辅助将片材和模制开口装置从模具中释放出来。

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