THREE/FIVE LAYER PREFORMS AND MANUFACTURE THEREOF,申请号EP19940200103-传众专利搜索

THREE/FIVE LAYER PREFORMS AND MANUFACTURE THEREOF

申请公布号：EP0596872(A3)

申请号：EP19940200103

申请日期：1989.11.22

申请公布日期：1994.08.17

申请人：

CONTINENTAL PET TECHNOLOGIES, INC.

发明人：KRISHNAKUMAR, SUPPAYAN M.;SCHMIDT, STEVEN LYLE;NAHILL, THOMAS E.;COLLETTE, WAYNE N.

分类号：B65D1/00;B29B11/08;B29C45/16;B29C49/00;B29C49/06;B29C49/22;B29K67/00;(IPC1-7):B29C45/16

主分类号：B65D1/00

摘要：<p>A plastic preform from which a plastic container is blow molded. The preform replaces a three layer preform by providing a preform which is of a five layer construction in the base forming portion thereof and wherein a secondary material which forms the core layer of the three layer preform construction is divided into an inner intermediate layer and outer intermediate layer by a third injection of material. The third injected material is preferably the same material as the primary material which is first injected. This results in the reduction of the cost of the preform and also provides remaining in the injection nozzle a quantity of the last injected material which is the same as the first injected material for the following preform in the same preform injection mold cavity.</p>