Method for ensuring that coating compositions have correct color
AssigneeImperial Chemical Industries PLC
InventorsCelia Charlotte Taylor, Ian David Oakes
Life of this patent
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Abstract
A method suitable for use in small trade stores or retail shops for assisting in providing the correct color or coating compositions mixed in the store or shop in which colorants (II) are added to a base paint (2), the base paint (2) being provided in a lidded container (I). The base paint (2) is pre dispensed in a lidded container (I), thereby avoiding the need to weigh it accurately in store thus saving time. Further time is saved by adding the colorants simultaneously to the base paint (2). The actual load (usually the combined weight of the can and the contents) is compared to the correct load stored in a database and the operator is alerted if the two fail to match.
Claims16
A method for assisting in providing the correct color for coating compositions, comprising:
- a) providing a container of base paint on a weighing member (3),
- b) simultaneously dispense more than one colorant into the container (1),
- c) determine the load on the weighing member (3) wherein d) the load is compared with data in a database, each datum being a correct load for a particular color for the coating composition, e) the absence of a match between the load and a datum in the database is detected and f) an alarm is sounded or the can and contents are rejected if the absence of a match is detected.
A tinting machine system for assisting in providing the correct color for coating compositions, comprising:
- a) weighing member (3) on which an open containter (1) of coating composition can be located and which is able to determine the load on the weighing member (3),
- b) reservoirs (10) for containing colorants (11),
- c) positive displacement members for delivering a plurality of colorants (11) simultaneously from reservoirs (10) into the container (1),
- d) at least one processor (5) having at least one storage member in which is stored a database in which each datum is a correct load for a particular color for the coating composition, and having a comparitor for comparing the load after delivery of the colorants (11) into the container (1) with data in the database,
- e) signaling member to indicate the absence of a match between the load and a datum in the database;
- and
- f) an alarm or rejection member which is activated when there is an absence of a match.
Dependencies are inferred from the claim text.