# US 5,702,537 A · Method for removing liquid edge bead

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,702,537 A
- Document ID: US5702537A
- Status: Granted
- Kind: A
- Application number: 08/575,803
- Filed: 1995-12-22
- Granted: 1997-12-30
- Earliest claimed: 1993-10-29
- Assignees: Kaiser Aluminum & Chemical Corporation
- Inventors: Donald C. Kush
- Web page: https://patentgrep.com/patent/US5702537A

## CPC

- F26B 13/007: {Treating a particular portion of the web or plate, e.g. the edge}
- B08B 5/026: {Cleaning moving webs}
- B21B 45/0278: {removing liquids}
- F26B: DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (drying devices for combines A01D41/133; racks for drying fruit or vegetables A01F25/12; drying foodstuffs A23; drying hair A45D20/00; body-drying implements A47K10/00; drying household articles A47L; drying gases or vapours B01D; chemical or physical processes for dewatering or like separating liquids from solids B01D43/00; centrifugal apparatus B04; drying ceramics C04B33/30; drying yarns or fabrics in association with some other form of treatment D06C; drying frames for laundry without heating or positive air circulation, domestic laundry-or spin-driers, wringing or hot pressing laundry D06F; furnaces, kilns, ovens F27)
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B21B: ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B21, see B21C; bending by rolling B21D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B21H; pressure welding by means of a rolling mill B23K20/04)

## Abstract

Method for removal of a liquid edge bead from the side marginal edges of a moving web, such as a strip. The method involves providing a moving web and two pair of manifolds, which are positioned above and below the top and bottom surfaces of the web, discharging a gas curtain approximately normal to the plane of the web, and introducing gas to the manifolds to produce a gas curtain from each manifold so that a portion of the gas curtains are deflected towards the edge of the web. The gas curtains that directly impact the web, in combination with a portion of the gas curtain that extends beyond the edge of the web and the portion that is created by the opposing gas curtain, create turbulence at the side marginal edges of the moving web to remove the liquid edge bead and to carry the liquid away from the marginal edges and the moving web.

## Claims

### Claim 1

A method for removing liquid edge bead from the side marginal edges of a moving web which comprises:
(a) providing a moving web having a top surface, a bottom surface, and two side marginal edges, the;
(b) providing two or more pairs of manifolds, one pair of manifolds being arranged at one side marginal edge of the web, while the other pair of manifolds being arranged on the other side marginal edge of the web in an opposing relationship, each pair of manifolds consisting of a top and a bottom manifold, the top manifold being positioned above the surface of the moving web, while the bottom manifold being positioned below the surface of the moving web, the manifolds being capable of discharging a gas curtain onto the top and bottom surfaces of the moving web, approximately normal to the plane of the web, in each pair of manifolds the top and bottom manifolds being arranged in a substantially parallel relationship and also located substantially equidistant from the top and bottom of the moving web, each pair of manifolds being positioned parallel to each other and to the top and bottom surfaces of the moving web and rotated to an angle from about 10.degree. to about 80.degree. relative to the side marginal edges of the moving web, the individual manifolds extending beyond the side edges of the moving web;
(c) introducing compressed gas to the manifolds to produce a gas curtain from each manifold approximately normal to the plane of the web, which curtains then impinge on the top and bottom surfaces of the moving web so that at least a portion of each gas curtain is deflected towards the side edges and the deflected gas curtains, in combination with the portion of gas curtains produced by those sections of the manifolds which extend beyond the side edges of the moving web, collide with each other and create turbulence at the side marginal edges of the moving web;
(d) using the turbulence to dislocate and remove the liquid edge bead from the side marginal edges of the web; and
(e) recovering the moving web substantially free of the liquid edge bead.

### Claim 2 (depends on 1)

A method according to claim 1, wherein the moving web is a metal sheet or strip.

### Claim 3 (depends on 1)

A method according to claim 1, wherein the moving web is an aluminum sheet or strip.

### Claim 4 (depends on 1)

A method according to claim 1, wherein the compressed gas is selected from the group consisting of air, nitrogen and inert gases.

### Claim 5 (depends on 1)

A method according to claim 1, wherein the compressed gas is air.

### Claim 6 (depends on 1)

A method according to claim 1, wherein the each pair of manifolds is rotated to an angle from about 40.degree. to about 50.degree. relative to the side marginal edges of the moving web.

### Claim 7

A method for removing a liquid edge bead from the side marginal edges of a moving web which comprises:
(a) providing a moving web having a top surface, a bottom surface, and two side marginal edges, the side marginal edges having a liquid edge bead;
(b) providing at least two pair of manifolds, each manifold of the pair being positioned above and below the top and bottom surfaces of the web,
each manifold being capable of discharging a gas curtain, the gas curtain of each manifold being placed in an opposing relationship to the gas curtain of the other manifold and both gas curtain being approximately normal to the plane of the web,
each pair of manifolds being positioned parallel to each other and to the top and bottom surfaces of the moving web, and rotated to an angle from about 10.degree. to about 80.degree. relative to the side marginal edges of the moving web, the individual manifolds extending beyond the side edges of the moving web;
c) introducing gas to the manifolds to produce a gas curtain from each manifold which is approximately normal to the plane of the web and aligned so that the gas curtains are placed in an opposing relationship, a portion of the gas curtains are deflected towards the edge of the web and, in combination with the portion of the gas curtain that extends beyond the edge of the web and the portion that is created by the opposing gas curtain, create turbulence at the side marginal edges of the moving web to remove the liquid edge bead and to carry the liquid away from the marginal edges and the moving web.