SPLIT MOULD Russian patent published in 2014 - IPC B28B7/00 

FIELD: construction.

SUBSTANCE: method to manufacture an item includes attachment of walls to a tray of a split mould by means of fixation elements. At the same time a part from hardened water with frozen-in embedded elements is installed under conditions of negative temperatures into openings made in walls or tray, wrapped with a polymer film or greased paper, with the possibility to support the part with the help of at least one support arranged on the tray with a flat or a curvilinear site to retain the part from the hardened water. Afterwards the mould is filled with a concrete mix with anti-freezing chemical additives. The content of the mould is compacted and left to harden under conditions of negative temperatures. After hardening of concrete the part from hardened water is changed into liquid condition or damaged mechanically. The finished item is withdrawn.

EFFECT: increased reliability and reduced labour intensiveness of item manufacturing.

4 dwg