公开(公告)号：US20230158730A1

公开(公告)日：2023-05-25

申请号：US17918946

申请日：2021-04-16

Applicant: ABC TECHNOLOGIES INC.

Inventor： Farshid SANJABI ,  Avinash JAYAKUMAR ,  Balwinder SINGH

IPC: B29C49/64 ,  B29C49/78

CPC classification number: B29C49/6604 ,  B29C49/786 ,  B29C2049/6606 ,  B29C2049/7868

Abstract: Provided is a method for producing thermoplastic articles. The method comprises forming a hollow parison of heated thermoplastic material and positioning the parison within a cavity of a mold tool, the cavity defining the external configuration of the desired article. Fluid pressure is then applied to an internal chamber defined by the parison upon closure of the mold tool, to expand the parison to conform to the mold cavity. The formed article is then subjected to an in-mold cooling phase to reduce the thermal energy of the formed article sufficiently to permit for safe ejection with reduced distortion. The cooling phase is defined by a variable cooling protocol that applies one or more cycles of thermal shock to the formed article during the in-mold cooling phase.