EP 1156917 A1 20011128 - METHOD AND APPARATUS FOR BLOW MOULDING
Title (en)
METHOD AND APPARATUS FOR BLOW MOULDING
Title (de)
METHODE UND VORRICHTUNG ZUM BLASFORMEN
Title (fr)
PROCEDE ET APPAREIL DE MOULAGE PAR SOUFFLAGE
Publication
Application
Priority
- FI 9900841 W 19991011
- FI 982216 A 19981012
Abstract (en)
[origin: WO0021730A1] The invention relates to a method and apparatus for blow moulding. In the blow moulding apparatus, an extruder (1) feeds material into a connecting channel (9) to form an annular parison. The annular parison is fed into a mould and air is blown into the parison. In the connecting channel (9) there is a regulating cavity (10) with a variable volume, the volume being regulated by moving a regulating piston (11) of the apparatus back and forth. When increasing the volume of the regulating cavity (10), more material is left in said regulating cavity (10), the exit flow decreases and thus the wall of an article becomes slightly thinner. When contracting the regulating cavity (10), more material is extruded from the apparatus, and the wall of the article to be manufactured becomes thicker.
IPC 1-7
IPC 8 full level
B29C 48/09 (2019.01); B29C 48/325 (2019.01); B29C 48/33 (2019.01); B29C 48/92 (2019.01); B29C 49/04 (2006.01); B29C 49/22 (2006.01)
CPC (source: EP KR US)
B29C 48/09 (2019.02 - EP US); B29C 48/10 (2019.02 - EP KR US); B29C 48/12 (2019.02 - EP KR US); B29C 48/325 (2019.02 - EP KR US); B29C 48/33 (2019.02 - EP KR US); B29C 48/92 (2019.02 - EP KR US); B29C 49/04 (2013.01 - KR US); B29C 49/22 (2013.01 - KR); B29C 49/04 (2013.01 - EP); B29C 49/22 (2013.01 - EP); B29C 2948/92514 (2019.02 - EP KR US); B29C 2948/926 (2019.02 - EP KR US); B29C 2948/92647 (2019.02 - EP KR US); B29C 2948/92904 (2019.02 - EP KR US); B29C 2949/00 (2013.01 - KR US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU
DOCDB simple family (publication)
WO 0021730 A1 20000420; AU 6205699 A 20000501; CN 1323255 A 20011121; EP 1156917 A1 20011128; FI 107896 B 20011031; FI 982216 A0 19981012; FI 982216 A 20000413; JP 2002527257 A 20020827; KR 20010075624 A 20010809; PL 347155 A1 20020325
DOCDB simple family (application)
FI 9900841 W 19991011; AU 6205699 A 19991011; CN 99812029 A 19991011; EP 99949033 A 19991011; FI 982216 A 19981012; JP 2000575674 A 19991011; KR 20017004563 A 20010411; PL 34715599 A 19991011