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    • 75. 发明申请
    • METHOD OF ATTACHING APPENDAGES TO BLOW MOULDED PRODUCTS
    • 连接吹塑成型产品的方法
    • WO1990010532A1
    • 1990-09-20
    • PCT/CA1990000086
    • 1990-03-15
    • KAUTEX OF CANADA INC.SCHWOCHERT, HansWEBER, WolfgangPUEMPEL, AndyKOGEL, Hans
    • KAUTEX OF CANADA INC.
    • B29C49/54
    • B29C49/54B29C49/04B29C49/041B29C65/665B29C66/126B29C66/532B29C66/83221B29C2049/546B29L2031/463B29L2031/712B29L2031/7172B65D25/2802
    • In a method for creating a blow moulded product comprising the steps of extruding a parison tube (3) into a cavity formed between opposite halves of a mould (5), pinching off end portions of the parison via crimping apparatus (7 and 9), admitting high pressure compressed gas into the inner portion of the parison tube via a gas blow pin or needle (11) for inflating the tube against the opposite halves of the mould and thereby create the blow moulded product, the improvement comprising the steps of projecting an undercut dowel (13) from an inner wall of at least one of the opposite halves of the mould such that the parison forms around and conforms to the shape of the dowel, retracting the dowel into the wall thereby leaving an undercut in the parison in the shape of the dowel, removing the blow moulded product from the mould and inserting pin portions (19 and 21) of an appendage (17) into the undercut prior to cooling of the parison whereby the undercut shrinks around the pin portions during cooling to form a secure connection of the appendage to the product.
    • 一种用于制造吹塑成型产品的方法,包括以下步骤:将型坯管(3)挤压成形成在模具(5)的相对两半部分之间的空腔中,通过压接装置(7和9)夹住型坯的端部, 通过气吹销或针头(11)将高压压缩气体进入型坯管的内部,用于使管子相对于模具的相对的两半膨胀,从而形成吹塑产品,改进之处在于: 底切钉(13)从模具的至少一个相对的两半的内壁移动,使得型坯围绕并适应销钉的形状,将销钉缩回到壁中,从而在型坯中留下底切 形状的榫钉,从模具中移除吹塑成型产品,并且在将型坯冷却之前将附件(17)的销部分(19和21)插入底切中,从而底切部围绕销部分d收缩 通过冷却来形成附件到产品的安全连接。