公开(公告)号：US4915992A

公开(公告)日：1990-04-10

申请号：US241613

申请日：1988-09-08

申请人： Nobuyuki Takakusaki ,  Kohei Shimojima

发明人： Nobuyuki Takakusaki ,  Kohei Shimojima

IPC分类号： B29C49/06 ,  B29B11/14 ,  B29C49/00 ,  B29C49/08 ,  B29C49/12 ,  B29L22/00

CPC分类号： B29C49/0073 ,  B29B2911/1402 ,  B29B2911/14026 ,  B29B2911/14033 ,  B29B2911/1404 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/14106 ,  B29B2911/1412 ,  B29B2911/14133 ,  B29B2911/14326 ,  B29B2911/14332 ,  B29B2911/14333 ,  B29B2911/14337 ,  B29B2911/1444 ,  B29B2911/14466 ,  B29B2911/14486 ,  B29B2911/14493 ,  B29C49/06 ,  B29C49/12 ,  Y10T428/1397 ,  Y10T428/2495

摘要： A parison for stretch molding comprising a side wall which forms a barrel portion of a hollow vessel during blow molding, a bottom wall which continues from the side wall and forms the bottom wall of the vessel during the blow molding, and a padding portion which is gradually made thin outward in the radial direction substantially from the central portion of the bottom wall and which is provided in the internal periphery of the bottom wall. The parison can therefore prevent the thickness of the bottom of the vessel from being too small after blow molding of th parison, but achieve sufficient strength without using any excessive material and achieve and improvement in productivity of the parison by increasing the cooling efficiency thereof.

摘要翻译： 一种用于拉伸成形的型坯，包括在吹塑成型期间形成中空容器的筒部的侧壁，在吹塑成型期间从侧壁连续并形成容器的底壁的底壁，以及填充部 基本上从底壁的中心部向径向外侧逐渐变薄，并设置在底壁的内周。 因此，能够防止型坯的吹塑成形后的容器底部的厚度过小，而且不会使用过量的材料而达到足够的强度，并且通过提高型坯的冷却效率来提高型坯的生产率。