High speed intermittent barrier nozzle

Patent metadata

Field	Value
Publication number	US-10130972-B2
Application number	US-201615259388-A
Country	US
Kind code	B2
Filing date	Sep 8, 2016
Priority date	Sep 9, 2015
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A nozzle assembly for applying a fluid on a substrate includes a plurality of plates, a first fluid conduit having a first inlet configured and a first discharge orifice configured to discharge a first fluid generally in a first direction, and a second fluid conduit having a second inlet, a second discharge orifice configured to discharge a second fluid generally in a second direction intersecting the first direction and a third discharge orifice. The second fluid acts on the first fluid at the first discharge orifice. A method of applying the fluid on the substrate includes continuously feeding the substrate by the nozzle assembly, discharging, in the first direction, the first fluid from the first discharge orifice onto the substrate, discharging, in the second direction, the second fluid from the second discharge orifice, and discharging, generally in the first direction, the second fluid from the third orifice.

First claim

The invention claimed is:

1. A nozzle assembly for applying a fluid on a substrate, the nozzle assembly comprising:
a plurality of plates secured together;
a first fluid conduit having a first inlet configured to receive a first fluid;
a first discharge orifice disposed downstream from and in fluid communication with the first fluid conduit, the first discharge orifice open to the atmosphere and configured to discharge the first fluid generally in a first direction;
a second fluid conduit having a second inlet configured to receive a second fluid;
a second discharge orifice disposed downstream from and in fluid communication with the second fluid conduit, the second discharge orifice open to the atmosphere and configured to discharge the second fluid generally in a second direction intersecting the first direction; and
a third discharge orifice disposed downstream from and in fluid communication with the second conduit, the third discharge orifice open to the atmosphere and configured to discharge the second fluid to oscillate or vacillate the first fluid during discharge of the first fluid.

2. The nozzle assembly of claim 1 , wherein plurality of plates includes a face plate, a backing plate and a plurality of laminated nozzle plates positioned therebetween.

3. The nozzle assembly of claim 2 , wherein the first and second inlets are formed in the backing plate.

4. The nozzle assembly of claim 3 , wherein the first conduit extends through one or more of the laminated nozzle plates.

5. The nozzle assembly of claim 4 , wherein the second conduit extends through all of the laminated nozzle plates.

6. The nozzle assembly of claim 5 , wherein the second conduit extends in the face plate.

7. The nozzle assembly of claim 1 , wherein the plurality of plates are secured together with one or more fasteners.

8. The nozzle assembly of claim 1 , wherein the first direction is angled between 80 and 100 degrees relative to the second direction.

9. The nozzle assembly of claim 8 , wherein the first direction is angled approximately 90 degrees relative to the second direction.

10. The nozzle assembly of claim 1 , where the first discharge orifice is one of a plurality of first discharge orifices.

11. The nozzle assembly of claim 10 , wherein the second discharge orifice is one of a plurality of second discharge orifices.

12. The nozzle assembly of claim 11 , wherein the plurality of first discharge orifices are formed in a first single, common plate of the laminated nozzle plates.

13. The nozzle assembly of claim 12 , wherein the plurality of second discharge orifices are formed in a second single, common plate of the laminated nozzle plates adjacent to the first single, common plate.

14. The nozzle assembly of claim 13 , wherein the laminated nozzle plates extend in a thickness direction and a width direction, the plurality of first discharge orifices are aligned in the width direction, the plurality of second discharge orifices are aligned with the width direction, and each first discharge orifice of the plurality of first discharge orifices is aligned with a respective second discharge orifice of the plurality of second discharge orifices in the thickness direction.

15. The nozzle assembly of claim 14 , further comprising a plurality of orifice tips on one or more of the laminated nozzle plates, the orifice tips of each plate being spaced apart in the width direction and having distal ends defining a convex arc.

16. The nozzle assembly of claim 14 , wherein the first and second pluralities of discharge orifices are positioned along a convex arc defined by the laminated nozzle plates.

17. The nozzle assembly of claim 1 , wherein the first fluid is a hot melt adhesive and the second fluid is air.

18. A method of applying a fluid on a substrate with a nozzle assembly, the nozzle assembly comprising a plurality of plates secured together, a first fluid conduit having a first inlet configured to receive a first fluid, a first discharge orifice disposed downstream from and in fluid communication with the first fluid conduit, the first discharge orifice configured to discharge the first fluid generally in a first direction, a second fluid conduit having a second inlet configured to receive a second fluid, a second discharge orifice disposed downstream from and in fluid communication with the second fluid conduit, the second discharge orifice configured to discharge a second fluid generally in a second direction intersecting the first direction, and a third discharge orifice disposed downstream from and in fluid communication with the second conduit, the third discharge orifice configured to discharge the second fluid to oscillate or vacillate the first fluid, the method comprising:
continuously feeding the substrate by the nozzle assembly;
discharging, in the first direction, the first fluid from the first discharge orifice onto the substrate;
discharging, in the second direction, the second fluid from the second discharge orifice to cut the first fluid discharged from the first discharge orifice at the first discharge orifice; and
discharging the second fluid from the third discharge orifice generally in the first direction.

19. The method of claim 18 , wherein the first fluid is a hot melt adhesive and the second fluid is air.

20. The method of claim 18 , wherein the first discharge orifice is formed in a first plate of the plurality of plates and the second discharge orifice is formed in a second plate of the plurality of plates.

21. The method of claim 18 , wherein the substrate is fed in a direction and wherein the second fluid is discharged in a direction parallel to the direction in which the substrate is fed.

22. The method of claim 21 , wherein the second fluid is discharged in a same direction as the direction in which the substrate is fed.

23. The method of claim 21 , wherein the second fluid is discharged in an opposite direction to the direction in which the substrate is fed.

Assignees

• Illinois Tool Works

Inventors

• Pahl Andreas
• Bolyard Jr Edward W

Classifications

• B05B7/08

  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} · CPC title

• B05D1/02 Primary

  performed by spraying · CPC title

• B05C5/027 Primary

  Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated (B05C5/0254 takes precedence) · CPC title

• B05C11/1034

  specially designed for conducting intermittent application of small quantities, e.g. drops, of coating material (B05C5/0225, B05C11/1026 take precedence) · CPC title