公开(公告)号：EP1331081A1

公开(公告)日：2003-07-30

申请号：EP03007239.1

申请日：1997-05-26

申请人： Idemitsu Petrochemical Co., Ltd.

发明人： Sugawara, Minoru, Idemitsu Petrochemical Co., Ltd. ,  Tada, Katsuhiko, Idemitsu Petrochemical Co., Ltd. ,  Obara, Tomoyuki, Idemitsu Petrochemical Co., Ltd. ,  Hirano, Koki, Idemitsu Petrochemical Co., Ltd.

IPC分类号： B29C49/64 ,  B29C49/28 ,  B29C49/66 ,  B29C49/48 ,  B29C49/60 ,  B29C49/62

CPC分类号： B29C49/4823 ,  B29C33/10 ,  B29C49/04 ,  B29C49/041 ,  B29C49/60 ,  B29C49/62 ,  B29C49/66 ,  B29C2049/4608 ,  B29C2049/4626 ,  B29C2049/4641 ,  B29C2049/4676 ,  B29C2049/609 ,  B29C2049/6623 ,  B29C2049/6646 ,  B29K2023/12 ,  B29L2031/3058

摘要： Provided is a method for producing blow moldings having a relatively large size through blow molding by use of a simple facility. Faithful mold-to-resin transfer of a surface such as a glossy surface is attained, and moldings can be obtained in shorter cycles with improved productivity. The method comprising the steps of feeding a melt parison of crystalline resin into the'space between molds, clamping the molds, blowing a pressurized fluid into the interior of the parison so as to cause the parison to be into close contact with the inner surfaces of the molds and to solidify the parison, wherein, while the parison and the mold inner surfaces are in close contact, the temperature of inner surfaces of the molds is maintained at a temperature from a temperature 10°C lower than the crystallization temperature of the crystalline resin to the melting point of the resin, and the parison is removed from the molds after the parison is cooled through introduction thereinto or discharge therefrom, during or after blowing-in of the pressurized fluid, of a cooling medium not higher than room temperature. An apparatus comprises a blow molding machine; a forming mold which is used in combination with the blow molding machine for producing a blow molding, the forming mold having degassing pores having a diameter of 100 µm or less in the surface of the mold at intervals (a pitch) of 50 mm or less; and means for introducing and/discharging a cooling medium into or from a parison formed through the mold.

摘要翻译： 提供了一种通过使用简单的设备通过吹塑成型制造具有相对较大尺寸的吹塑成型体的方法。 实现了诸如光泽表面之类的表面的真实模具到树脂的转移，并且可以以更短的周期获得模制品，并提高了生产率。 该方法包括以下步骤：将结晶树脂的熔体型坯进入模具之间的空间，夹紧模具，将加压流体吹入型坯的内部，以使型坯与型坯的内表面紧密接触 模具并固化型坯，其中当型坯和模具内表面紧密接触时，模具内表面的温度保持在比结晶温度低10℃的温度的温度 树脂到树脂的熔点，并且在型坯在不高于室温的冷却介质中在加压流体吹入或之后从其中引入或从其中排出而将型坯从模具中除去。 一种装置包括吹塑机; 成型模具与吹塑机组合使用，用于吹塑成型，成形模具具有在模具表面上的间隔（间距）为50mm的直径为100μm或更小的脱气孔，或 减; 以及用于将冷却介质引入和/排出到通过模具形成的型坯中的装置。