Method for blow molding plastic articles

专利名称：Method for blow molding plastic articles发明人：Albert R. Uhlig申请号：US05/534356申请日：19741219公开号：USRE029045E1公开日：19761123

摘要：A method of blow molding plastic articles in two blowing stages. A freelyextruded pendant tubular parison is first blown into a pre-form, then the pre-form, whileat the temperature most conductive to orientation, is blown to its final configuration. Byperforming certain operations on the pre-form prior to the final blowing step, improvedproducts can be made. For example, by pinching shut a portion of the pre- form, handledcontainers can be made on a free extrusion blow molding machine. By stretching the pre-form prior to final blowing, containers of increased top-load or stacking capabilities canbe made. .Iadd.

This application is a re-issue of U.S. Pat. 3, 781,395, issued Dec. 25, 1973, matured fromU.S. Pat. application Ser. No. 110,685, filed January 28, 1971. .Iaddend.

申请人：OWENS ILLINOIS INC

代理机构：Cullen, Settle, Sloman & Cantor

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