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US 6,547,553 B2Granted
Core for use in injection molding plastic articles
AssigneeHusky Injection Molding Systems Ltd.
InventorsMichael Koch, Robert D. Schad, Laura Martin, James D. Sykes, Dan Stracovsky, Bruce Catoen
Life of this patent
Estimating the term…
Abstract
A plastic article is formed in an injection mold by injecting molten plastic into the injection mold at an elevated temperature, cooling the plastic from the molten condition to a solid condition, and crystallizing a portion of the plastic by slowing down the cooling of said portion.
Claims3
A core for use in injection molding plastic articles, comprising:
- a core surface adjacent said plastic articles and cooling and heating means in said core;
- including a core tube within said core made of at least two materials.
A core for use in injection molding plastic articles, comprising:
- a core surface adjacent said plastic articles and cooling and heating means in said core;
- wherein said core includes internal thermal insulation of at least a portion of a surface thereof.
A core for use in injection molding plastic articles, comprising:
- a core surface adjacent said plastic article and cooling and heating means in said core;
- wherein said core includes mating means over at least a portion of the surface thereof and wherein said heating means is a thin film heater.
Dependencies are inferred from the claim text.