Patent ID: 7238318

Claim:
A method for forming a hollow plastic article, which comprises: injection molding a plastic article having a hollow inside portion and an outside wall portion, including the steps of; injection molding a primary opaque plastic material into an injection mold through an injection channel and a valve gate, wherein said injection channel includes a valve stem, and wherein the primary plastic material converges around the valve stem; injection molding a transparent secondary plastic material into said injection mold through said injection channel and valve gate, wherein the secondary plastic material is introduced into said injection channel where the primary plastic material converges around the valve stem so that said secondary plastic material maintains laminar flow through the injection channel and into the injection mold; and wherein the outside wall portion of the resultant injection molded plastic article is opaque and wherein the outside wall portion includes a transparent portion adjacent the opaque portion so that the inside portion can be seen through the transparent portion.