EP 0784668 A1 19970723 - IMPROVED EXTRUSION PROCESS FOR MANUFACTURING DETERGENTS
Title (en)
IMPROVED EXTRUSION PROCESS FOR MANUFACTURING DETERGENTS
Title (de)
VERBESSERTES EXTRUSIONSVERFAHREN ZUR HERSTELLUNG VON WASCHMITTELN
Title (fr)
AMELIORATION APPORTEE A UN PROCEDE D'EXTRUSION POUR LA PRODUCTION DE DETERGENTS
Publication
Application
Priority
- DE 4434500 A 19940927
- EP 9503668 W 19950918
Abstract (en)
[origin: DE4434500A1] In the production of washing and cleaning agents by pressing a homogeneous pre-mixture of washing agent components into strands through perforated moulds, subsequent crushing of the extrudate and treatment in a rounding device producing a product consisting of largely uniform spherical granules with bulk densities generally in the 700g/l - 1050 g/l range, the aim is to improve the degree of homogeneity of the pre-mix used for the extrusion process and the smoothness of the surface of the extruded granules, while avoiding differences in length. This is achieved in essence by using hot drying gases to spray-dry an aqueous sludge containing a surfactant, inorganic builders and silicone oil; the spray-drying product is optionally mixed with other solid washing or cleaning agents, or washing or cleaning agents prepared in solid form, the mixture is extruded through a perforated plate and the extrudate is optionally rounded and/or pulverised.
IPC 1-7
IPC 8 full level
C11D 3/37 (2006.01); C11D 11/02 (2006.01); C11D 17/06 (2006.01)
CPC (source: EP)
C11D 3/373 (2013.01); C11D 11/02 (2013.01); C11D 17/065 (2013.01)
Citation (search report)
See references of WO 9610070A1
Designated contracting state (EPC)
AT BE CH DE ES FR IT LI NL
DOCDB simple family (publication)
DE 4434500 A1 19960328; EP 0784668 A1 19970723; WO 9610070 A1 19960404
DOCDB simple family (application)
DE 4434500 A 19940927; EP 9503668 W 19950918; EP 95933387 A 19950918