Patent ID: 11884800
Assignee: MILLIKEN & COMPANY
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B | IPC B  C

Claim 8:
9. A method for molding a thermoplastic polymer composition, the method comprising the steps of:
(a) providing an apparatus comprising a die and a mold cavity, the mold cavity having an interior surface defining a shape for a molded article;
(b) providing a thermoplastic polymer composition comprising (i) a polyethylene polymer composition having a Melt Relaxation Ratio of 1.5 or greater; and (ii) a salt of bicyclo[2.2.1]heptane-2,3-dicarboxylic acid;
(c) heating the thermoplastic polymer composition to a temperature sufficient to melt the polymer composition so that it may be extruded through the die;
(d) extruding the molten thermoplastic polymer composition through the die to form a parison;
(e) capturing the parison in the mold cavity;
(f) blowing a pressurized fluid into the parison under sufficient pressure to inflate the parison so that it conforms to the interior surface of the mold cavity and produces a molded article;
(g) allowing the molded article to cool to a temperature at which the thermoplastic polymer composition at least partially solidifies so that the molded article retains its shape; and
(h) removing the molded article from the mold cavity.