Colour blending apparatus and method

Details Colour blending apparatus and method Colour blending apparatus and method

B - Operations, Transporting

29

B

B29B 7/72 (2006.01) B28B 13/02 (2006.01) B28B 15/00 (2006.01)

Patent

CA 2254301

An apparatus for colour blending an agglomerating flowable material from a differently coloured individual batches, to collect a charge of mottled heterogeneous material from at least two batches so that mottled products (i.e. with irregular arrangement of spots or confluent blotches of colour) are produced from a relatively dry concrete mixture (zero slump concrete), which agglomerates into clumps that tumble randomly from individual hoppers containing individually coloured concrete batches. By controlling positioning of a filling tray relative to a hopper outlet, the time sequencing and quantity of material released from each hopper outlet, it is possible to fill the filling tray in a large number of seemingly random mottled patterns where clumps of each of the individual colours remain visible in the moulded product.

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