Method of mixing and applying multi-component paint

• US 8,647,720 B2
• Filed: 09/13/2012
• Issued: 02/11/2014
• Est. Priority Date: 10/17/2008
• Status: Active Grant

• Current Assignee: Sherwin-Williams Company
• Original Assignee: Sherwin-Williams Company
• Inventors: Staunton, Thomas J., Brainard, Gregory A., Brainard, Michael J.
• Primary Examiner(s): Meeks, Timothy
• Assistant Examiner(s): Leong, Nathan T
• Application Number:
  US13/613,524
• Publication Number:
  US 20130001317A1
• Time in Patent Office: 516 Days
• Field of Search: 427/421.1, 427/426, 222/94, 222/105, 222/145.5, 222/145.6, 222/209, 222/213, 222/214, 222/324, 239/323, 239/324, 239/325, 239/327, 239/329, 239/330, 239/331, 239/337, 239/356, 239/357, 239/365, 239/363, 137/206, 137/209
• US Class Current: 427/421.1
• CPC Class Codes: B05B 12/1409 the selection means being part of the discharge apparatus, e.g. part of the spray gun
• CPC Class Codes: B05B 12/1418 for supplying several liquids or other fluent materials in selected proportions to a single spray outlet controlling ratio of two or more flows of fluid G05D11/02
• CPC Class Codes: B05B 7/2408 characterised by the container or its attachment means to the spray apparatus
• CPC Class Codes: B05B 7/2427 and a secondary stream of atomising fluid being brought together in the container or putting the carried liquid under pressure in the container
• CPC Class Codes: B05B 7/2472 comprising several containers
• CPC Class Codes: B05B 7/2481 with a flexible container for liquid or other fluent material
• CPC Class Codes: Y10T 137/3115 Gas pressure storage over or displacement of liquid
• CPC Class Codes: Y10T 137/3127 With gas maintenance or application

Abstract

A system for applying coatings and more specifically paint coatings is provided that combines fluid stored in separate reservoir containers prior to expelling the mixture for application. The reservoirs may be comprised of collapsible and disposable bags that eject its fluid upon activation of an actuator or expanding bladder. The fluid components are combined and blended together in a mixer that is positioned between the reservoirs and a nozzle.

Claims

1. A method of mixing and applying a multi-component paint comprising:

(1) providing a coating applicator comprising;

a nozzle configured for dispensing paint;

a mixing device in fluid communication with the nozzle;

a plurality of fluid storing reservoirs;

a plurality of paint components stored in said plurality of fluid storing reservoirs;

an expandable bladder operatively engaged with the plurality of fluid storing reservoirs;

(2) expanding the bladder to compress the plurality of fluid storing reservoirs;

(3) discharging the plurality of paint components from the plurality of fluid storing reservoirs into the mixing device; and

(4) spraying a mixed paint composition onto a surface through the nozzle.

2. The method as defined in claim 1, wherein the mixing device is a static mixer.

3. The method as defined in claim 2, wherein the static mixer includes one or more baffles defining a circuitous route for blending the associated fluid components.

4. The method as defined in claim 1, wherein the plurality of fluid storing reservoirs are comprised of collapsible bags.

5. The method as defined in claim 1, wherein the expandable bladder is accordion shaped.

6. The method as defined in claim 1, wherein the plurality of fluid storing reservoirs comprises at least two fluid storing reservoirs.

7. The method as defined in claim 1, wherein the plurality of paint components comprise paint components which are reactive with each other upon mixing.

8. A method of mixing and applying a multi-component paint comprising:

(1) providing a coating applicator comprising;

a nozzle configured for dispensing paint;

a mixing device in fluid communication with the nozzle;

a plurality of fluid storing reservoirs;

a plurality of paint components stored in said plurality of fluid storing reservoirs;

an expandable bladder operatively engaged with the plurality of fluid storing reservoirs;

(2) expanding the bladder to compress the plurality of fluid storing reservoirs; and

(3) spraying a mixed paint composition onto a surface through the nozzle.