EP 1009608 A1 20000621 - PROCESS FOR MANUFACTURING MOULDED ARTICLES MADE OF PLASTICS, CELLULOSE OR WOOD PULP AND PROVIDED WITH CAVITIES
Title (en)
PROCESS FOR MANUFACTURING MOULDED ARTICLES MADE OF PLASTICS, CELLULOSE OR WOOD PULP AND PROVIDED WITH CAVITIES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON AUS KUNST-, ZELL- ODER HOLZSTOFF BESTEHENDEN FORMTEILEN MIT HOHLRÄUMEN
Title (fr)
PROCEDE DE PRODUCTION DE PIECES MOULEES MUNIES DE CAVITES, REALISEES EN MATIERE PLASTIQUE, EN CELLULOSE OU EN PATE MECANIQUE
Publication
Application
Priority
- AT 128497 A 19970729
- DE 9802205 W 19980729
Abstract (en)
[origin: WO9906200A1] A process for manufacturing moulded articles made of plastics, cellulose or wood pulp and provided with cavities (9), in particular composite parts for light-weight construction, by means of tool parts (1, 2), has the following steps: (a) a matrix material (5) is provided at preselected locations with inserts (7) which contain gas-developing blowing agents; and (b) the inserts (7) are caused to develop gas in the tool parts (1, 2) and expand the matrix material (5). Also disclosed are the gas-developing inserts for use in said process and made of gas-developing blowing substances enclosed in gas-tight sheaths or inserted into the matrix material (5) so as to form locally delimited regions therein. This process allows particularly light and at the same time solid tool parts to be produced, in particular composite parts for light-weight construction.
IPC 1-7
IPC 8 full level
B29C 33/76 (2006.01); B29C 44/00 (2006.01); B29C 44/18 (2006.01); B29C 45/00 (2006.01); B29C 49/04 (2006.01); B32B 5/18 (2006.01)
CPC (source: EP US)
B29C 44/185 (2013.01 - EP US); Y10T 156/1003 (2015.01 - EP US)
Citation (search report)
See references of WO 9906200A1
Designated contracting state (EPC)
AT BE CH DE ES FR GB IE IT LI LU
DOCDB simple family (publication)
WO 9906200 A1 19990211; AU 9337498 A 19990222; CA 2297934 A1 19990211; CA 2297934 C 20071211; DE 19881053 D2 20000706; EP 1009608 A1 20000621; JP 2001512059 A 20010821; US 2002157758 A1 20021031; US 6447627 B1 20020910; US 6875298 B2 20050405
DOCDB simple family (application)
DE 9802205 W 19980729; AU 9337498 A 19980729; CA 2297934 A 19980729; DE 19881053 T 19980729; EP 98946251 A 19980729; JP 2000504992 A 19980729; US 16454702 A 20020607; US 46219600 A 20000103