# US 2023/0053546 A1 · Body of a sanitary fitting having an anti-corrosion layer and a method for manufacturing such a body

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- Number: US 2023/0053546 A1
- Document ID: US20230053546A1
- Status: Published application
- Kind: A1
- Application number: 17/795,352
- Filed: 2020-09-28
- Published: 2023-02-23
- Earliest claimed: 2020-01-31
- Assignees: Grohe AG
- Applicants: Grohe AG
- Inventors: Torsten MEIER
- Web page: https://patentgrep.com/patent/US20230053546A1

## CPC

- E03C 1/04: Water-basin installations specially adapted to wash-basins or baths (valves, faucets, mixing valves, taps F16K)
- F16L 58/08: by metal
- B05D 3/0254: {After-treatment}
- B05D 7/16: using synthetic lacquers or varnishes
- E03C 1/0404: {Constructional or functional features of the spout}
- E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)

## Abstract

A method for manufacturing a body for a sanitary fitting that involves the following steps: provision of the body, wherein the body contains at least partially a zinc alloy and has at least one area for guiding a liquid; and coating the at least one area using an anti-corrosion coating, wherein the anti-corrosion coating is at least partially formed of a polymeric material.

## Claims

### Claim 1

A method for manufacturing a body (1) for a sanitary fitting (2), at least comprising the steps listed below:
a) provision of the body (1), wherein the body (1) consists at least partially of a zinc alloy and has at least one area (3) for guiding a liquid; and
b) coating the at least one area (3) using an anti-corrosion coating (4), wherein the anti-corrosion coating (4) is at least partially formed of a polymeric material.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the zinc alloy contains zinc at a mass fraction greater than 80%.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the body (1) is manufactured by a zinc die-casting process before step a) is performed.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the coating of the at least one area (3) is performed in step b) without any prior treatment of the at least one area (3).

### Claim 5 (depends on 1)

The method according to claim 1, wherein the coating in step b) is applied by painting, immersing or spinning.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the corrosion protection layer (3) in step b) is formed having a layer thickness of 50 μm to 2 mm.

### Claim 7 (depends on 1)

The method according to claim 1, wherein after step b), the anti-corrosion layer (4) is solidified at a room temperature in step c).

### Claim 8

The method according to any one of , wherein, after step b), heat is used to solidify the corrosion protection layer (4) in step c).

### Claim 9 (depends on 1)

The method according to claim 1, wherein the polymeric material is at least in part polytetrafluoroethylene, polypropylene or polystyrene.

### Claim 10

A body (1) for a sanitary fitting (2), wherein the body (1) consists at least partially of a zinc alloy and has at least one area (3) for guiding a liquid, and wherein the at least one area (3) is coated with a corrosion protection layer (4) which consists at least partially of a polymeric material.