# US 4,396,651 A · Process for spraying water-dilutable paint systems

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- Number: US 4,396,651 A
- Document ID: US4396651A
- Status: Granted
- Kind: A
- Application number: 05/970,955
- Filed: 1978-12-19
- Granted: 1983-08-02
- Earliest claimed: 1977-12-27
- Assignees: Vianova Kunstharz, A.G.
- Inventors: Klaus Behmel; Werner Gessner; Norbert Wamser; Werner Wilfinger
- Web page: https://patentgrep.com/patent/US4396651A

## CPC

- B05D 1/02: performed by spraying
- B05B 7/08: with separate outlet orifices, e.g. to form parallel jets {, i.e. the axis of the jets being parallel}, to form intersecting jets {, i.e. the axis of the jets converging but not necessarily intersecting at a point}
- B05D 1/34: Applying different liquids or other fluent materials simultaneously
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)

## Abstract

A spray coating process for application of water-dilutable paint systems which includes spraying a water-dilutable paint through a main nozzle which atomizes the paint and simultaneously therewith spraying at least one additional material from at least one lateral ancillary nozzle into and/or around the paint stream from the main nozzle. The additional material can be water to control the water content of the paint film, or it can be an additive such as a leveling aid for the paint. The spraying of the additional material into and around the paint stream while it is being projected to the surface to be painted causes the material to locate primarily at the surface of the atomized paint droplets.

## Claims

### Claim 1

A spray coating process for application of water-dilutable paint systems to a surface to be painted with a decorative coating comprising (1) spraying a water-dilutable paint through a main nozzle to atomize said paint; and (2) simultaneously with (1) spraying a stream of water atomized by at least one ancillary nozzle around the atomized paint stream from said main nozzle before said atomized paint stream reaches the surface to be painted building up a substantially uniform water atmosphere around the paint stream without said water being homogeneously mixed with said paint.

### Claim 2 (depends on 1)

The process of claim 1 wherein said water is sprayed from a plurality of ancillary nozzles.

### Claim 3 (depends on 1)

The process of claim 1 wherein said water sprayed from said ancillary nozzle includes a solvent mixed with said water.

### Claim 4 (depends on 1)

The process of claim 1 wherein said water sprayed from said ancillary nozzle includes a paint leveling aid.