Patent ID: 9498911
Filing Date: 2016-11-22
CPC Classification: B29C

Claim Text:
1. A method of coinjection, the method comprising: flowing a first melt stream of a first molding material within a hot runner valve-gated nozzle; flowing a second melt stream of a second molding material within the nozzle; dividing the first melt stream with a nozzle tip of the nozzle into an inner layer melt stream and an outer layer melt stream; creating a combined melt stream with the second melt stream disposed between the inner layer melt stream and the outer layer melt stream, whereby the second melt stream becomes a core layer melt stream; varying a volume of the inner layer melt stream to a volume of the outer layer melt stream within the combined melt stream to control a radial position of a core layer formed within a molded article produced by the combined melt stream; and adjusting a volume of the second material melt stream within the nozzle tip by increasing or decreasing a width of an annular opening between a downstream end of a sleeve component and a corresponding surface of the nozzle tip to control a volume of the core layer melt stream within the combined melt stream whereby a thickness is adjusted of the core layer formed within the molded article produced by the combined melt stream.