EP 0833564 A1 19980408 - PROCESS FOR MANUFACTURING DEGRADABLE THIN-WALLED MOULDINGS
Title (en)
PROCESS FOR MANUFACTURING DEGRADABLE THIN-WALLED MOULDINGS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON VERROTTBAREN, DÜNNWANDIGEN FORMKÖRPERN
Title (fr)
PROCEDE DE FABRICATION D'ARTICLES MOULES DECOMPOSABLES, A PAROI MINCE
Publication
Application
Priority
- AT 9600107 W 19960614
- AT 102695 A 19950614
- AT 103896 A 19960613
Abstract (en)
[origin: WO9700015A1] The invention concerns a process for manufacturing degradable, thin-walled moulded articles such as beakers, plates, fast-food packaging, trays, flat sheets and the like. A starch-based bake material is applied to the lower mould part of a multiple part, preferably two-part, mould. The material is then baked and conditioned to leave a moisture content of 6-22 wt %. The bake material contains, in addition to water and a starch or starch mixtures and/or flour or flour mixtures and/or starch derivatives, a fat- or oil-free parting compound and, as required, other standard additives. It is proposed that polyvinyl alcohol should be added to the baking mixture in quantities of 0.5 - 40 wt % as a proportion of the starch products, the polyvinyl alcohol having a degree of polymerisation of above 1000, preferably above 1600 and in particular above 2000, and the water content being 100-360 wt % as a proportion of starch product. Polyvinyl alcohol can be added in dry form or in the form of an aqueous solution.
IPC 1-7
IPC 8 full level
A21D 2/14 (2006.01); A21D 13/00 (2006.01); B65D 65/46 (2006.01)
CPC (source: EP KR US)
A21D 2/14 (2013.01 - EP US); A21D 13/00 (2013.01 - KR); A21D 13/33 (2016.12 - EP US); A21D 13/38 (2016.12 - EP US); B65D 65/466 (2013.01 - EP US); Y02A 40/90 (2017.12 - EP US); Y02W 90/10 (2015.05 - EP US)
Citation (search report)
See references of WO 9700015A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9700015 A1 19970103; AU 5887396 A 19970115; AU 714445 B2 20000106; CA 2224393 A1 19970103; CN 1153518 C 20040616; CN 1196658 A 19981021; EP 0833564 A1 19980408; JP H11507543 A 19990706; KR 100433815 B1 20040816; KR 19990022991 A 19990325; US 6146573 A 20001114
DOCDB simple family (application)
AT 9600107 W 19960614; AU 5887396 A 19960614; CA 2224393 A 19960614; CN 96196286 A 19960614; EP 96915905 A 19960614; JP 50240097 A 19960614; KR 19970709461 A 19971215; US 99034597 A 19971215