Global Patent Index - EP 1005409 A1

EP 1005409 A1 2000-06-07 - IMPROVEMENTS IN OR RELATING TO GAS ASSISTED INJECTION MOULDING

Title (en)

IMPROVEMENTS IN OR RELATING TO GAS ASSISTED INJECTION MOULDING

Title (de)

VERBESSERUNGEN AN ODER IN BEZUG AUF DURCH GAS UNTERSTÜTZTES SPRITZGIESSEN

Title (fr)

AMELIORATIONS CONCERNANT OU APPORTEES AU MOULAGE PAR INJECTION AUX GAZ

Publication

EP 1005409 A1 (EN)

Application

EP 98935110 A

Priority

  • GB 9801879 W
  • GB 9714807 A

Abstract (en)

[origin: WO9903665A1] A mould for a gas assisted method of injection moulding has first and second mould parts defining a mould cavity. A series of upstanding ribs extend from the surface of the mould defining the mould cavity. These ribs produce complementary channels (30) in a moulding produced in the mould. These channels (30) split the mould cavity into a plurality of communicating sub-sections (31). Channels are provided splitting the ribs into sections and forming, during the moulding process, connecting ribs (35) of plastic between the plastic adjacent the channels (30). These ribs contribute to the lateral rigidity of the moulded product. The sub-sections enable an otherwise uncontrollable void to be divided into controllable smaller voids.

IPC 1-7 (main, further and additional classification)

B29C 45/17

IPC 8 full level (invention and additional information)

B29C 45/17 (2006.01); B29D 35/12 (2010.01)

CPC (invention and additional information)

B29D 35/122 (2013.01); B29C 45/1704 (2013.01); B29D 35/124 (2013.01); B29D 35/128 (2013.01)

Citation (search report)

See references of WO 9903665A1

Designated contracting state (EPC)

DE GB

EPO simple patent family

WO 9903665 A1 19990128; AU 8447298 A 19990210; EP 1005409 A1 20000607; GB 9714807 D0 19970917

INPADOC legal status


2003-06-18 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021213

2002-03-06 [RTI1] TITLE (CORRECTION)

- Free text: APPARATUS FOR GAS ASISTED INJECTION MOULDING OF A FOOT WEAR COMPONENT

2001-08-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010622

2000-06-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000211

2000-06-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE GB