Title:
【発明の名称】ガス導入
Document Type and Number:
Japanese Patent JP2001519734
Kind Code:
A
Abstract:
The cylinder head (8) of an injection molding machine has a transverse bore (20), in which is threadedly engaged a gas introduction device (21) connected to a gas bottle (22), having a pressure regulator (23). The device has a body (24) which carries a valve poppet (25) in a complementarily shaped bore (26) opening to the passage through the cylinder head. A spring (27) normally closes the poppet valve. A control valve (28), under control of the system (7) is provided upstream of the poppet valve. Gas is introduced into the injection chamber of the machine after suck back and before screw rotate for feeding plastics material to the injection chamber. On injection, the material is injected with the gas added to it.
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Inventors:
Clark Peter Reginald
Application Number:
JP54128198A
Publication Date:
October 23, 2001
Filing Date:
April 02, 1998
Export Citation:
Assignee:
Coral Tech Limited
International Classes:
B29C45/00; B29C44/34; B29C45/17; B29C45/46; B29C45/52; (IPC1-7): B29C45/00; B29C45/46
Attorney, Agent or Firm:
Ando