Patent Number: 6,251,326

Title: Process and apparatus for coinjection molding of articles having complex shape

Abstract: An article having complex geometrical shape is obtained by consecutively coinjection molding a first and a second material substantially without stopping time between the two injections. Pressure, temperature and mass flow rate are controlled to obtain a homogeneous distribution of the several flows of injected material and to have them meet in a fluid condition and melt together at the meeting point.

Inventors: Siano; Dante (Cologno Monzese, IT), Vecchiarino; Luigi (Vaprio d'Adda, IT)

Assignee: Commer, S.p.A.

International Classification: B29C 45/00 (20060101); B29C 45/16 (20060101); B29C 045/03 (); B29C 045/16 ()

Expiration Date: 06/26/2018