EP 1140453 A1 20011010 - ROTATIONAL MOULDING METHOD AND APPARATUS
Title (en)
ROTATIONAL MOULDING METHOD AND APPARATUS
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ROTATIONSFORMEN
Title (fr)
PROCEDE DE MOULAGE ROTATIF ET APPAREIL CORRESPONDANT
Publication
Application
Priority
- IE 9900144 W 19991223
- IE 981100 A 19981223
Abstract (en)
[origin: WO0038897A1] A method of rotation moulding comprises forming a reactant thermoplastic melt in a mould (1, 20). The reactant thermoplastic melt comprises a mixture of thermoplastic pre-polymer, such as lactam (12) and a polymerisation activator. The pre-polymer and activator may be mixed in the mould under an inert atmosphere or a premix of the pre-polymer and activator may be formed prior to delivery into a mould (1). The premix may be stored under an inert atmosphere in a sealed container such as a bag (16) from which it may be delivered into a mould (20) at room temperature. Alternatively the reactant melt may be formed in the mould (1) by delivering a pre-polymer into the mould and injecting a polymerisation activator into the mould.
IPC 1-7
IPC 8 full level
B29C 41/00 (2006.01); B29C 41/04 (2006.01); B29C 31/06 (2006.01); B29C 41/06 (2006.01)
CPC (source: EP)
B29C 41/003 (2013.01); B29C 41/04 (2013.01); B29C 31/06 (2013.01); B29C 41/06 (2013.01); B29C 2791/005 (2013.01); B29K 2077/00 (2013.01); B29K 2105/0002 (2013.01)
Citation (search report)
See references of WO 0038897A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0038897 A1 20000706; AU 1794600 A 20000731; EP 1140453 A1 20011010
DOCDB simple family (application)
IE 9900144 W 19991223; AU 1794600 A 19991223; EP 99961253 A 19991223