EP 0182619 A2 19860528 - Improvements in or relating to manufacture of building blocks.
Title (en)
Improvements in or relating to manufacture of building blocks.
Title (de)
Herstellung von Baublöcken.
Title (fr)
Fabrication de blocs de construction.
Publication
Application
Priority
- GB 8429558 A 19841122
- GB 8504398 A 19850220
- GB 8504399 A 19850220
Abstract (en)
An apparatus for manufacturing a building block is of the type having a mould box (1), and at least one core (3) rigidly mounted in the mould box by means of a spacer bar (4). At least a portion of the moulding surface of the core and/or the mould box is formed from a rubbery polymer. The polymer may be used as a coating (8) and/or the core (3) may be a moulding of the polymer. An undercut may be made in a block by providing a core (16) with an expandable resilient portion. The polymer may also be used to provide a cushion (8) under the lower edge of the mould box (1). In the process using the apparatus the mould box (1) and core (3) are removed from uncured mould blocks after a very short time e.g. 1 to 60 seconds.
IPC 1-7
IPC 8 full level
B28B 7/18 (2006.01); B28B 7/30 (2006.01); B28B 7/34 (2006.01); B28B 7/36 (2006.01)
CPC (source: EP)
B28B 7/183 (2013.01); B28B 7/303 (2013.01); B28B 7/348 (2013.01); B28B 7/364 (2013.01)
Designated contracting state (EPC)
BE DE FR IT NL
DOCDB simple family (publication)
EP 0182619 A2 19860528; EP 0182619 A3 19880720; GB 2174034 A 19861029; GB 2174034 B 19881116; GB 8528414 D0 19851224
DOCDB simple family (application)
EP 85308308 A 19851114; GB 8528414 A 19851119