Manufacture of papermachine clothing

• US 20060017196A1
• Filed: 07/20/2005
• Published: 01/26/2006
• Est. Priority Date: 07/21/2004
• Status: Abandoned Application

• Current Assignee: The Voith Fabrics Patent GmbH
• Original Assignee: The Voith Fabrics Patent GmbH
• Inventors: Sayers, Ian
• Application Number:
  US11/184,902
• Publication Number:
  US 20060017196A1
• Time in Patent Office: Days
• US Class Current: 264/259
• CPC Class Codes: D21F 1/0027 Screen-cloths
• CPC Class Codes: D21F 1/0063 Perforated sheets

Abstract

A method of manufacturing papermachine clothing including electrostatically charging selected areas of an electrostatically chargeable surface. Applying a dry material to the surface, wherein the dry material adheres to the selected areas, then removing non-adhering material. Melting the dry material adhering to the selected areas, and applying the molten dry material to an extended surface to form a planar article. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Claims

1. A method of manufacturing papermachine clothing comprising:

electrostatically charging selected areas of an electrostatically chargeable surface;

applying a dry material to the surface, wherein the dry material adheres to the selected areas;

removing non-adhering material;

melting the dry material adhering to the selected areas; and

applying the molten dry material to an extended surface to form a planar article.

2. The method as claimed in claim 1, wherein the melting of the dry material occurs at a same time as the molten dry material is applied to the extended surface.

3. The method as claimed in claim 1, further comprising discharging certain electrostatically charged areas of the surface.

4. The method as claimed in claim 1, further comprising applying a second dry material, serving as a carrier matrix for the dry material, in non-selected areas of the surface.

5. The method as claimed in claim 4, wherein the second dry material comprises a material that is at least one of soluble and removable from the dry material.

6. The method as claimed in claim 1, wherein the extended surface comprises a conveyor belt with a non-stick coating.

7. An apparatus for manufacturing papermachine clothing comprising:

an electrostatically chargeable surface;

a charging device to charge the surface, so that selected areas of the surface are charged;

an applicator unit to apply a dry material to the surface;

a removal device to remove non-adhering dry material from the surface;

a heater for melting the dry material adhering to the selected charged areas, and

a device to apply the molten dry material to an extended surface.

8. The apparatus as claimed in claim 7, wherein the extended surface comprises a conveyor belt with a non-stick coating.

9. The apparatus as claimed in claim 8, wherein the non-stick coating comprises a fluoropolymer.

10. The apparatus as claimed in claim 7, wherein the application unit is structured and arranged for movement at least transverse to a machine run direction, so as to apply successive panels of the dry material from a edge to a edge over the width of the surface.

11. The apparatus as claimed in claim 7, wherein the application unit is structured and arranged to traverse from one edge of the surface to another and to return to an initial position to deposit a following layer.

12. The apparatus as claimed in claim 7, further comprising a control device structured and arranged to control selection and electrostatic discharging of the selected areas of the surface.

13. The apparatus as claimed in claim 12, wherein the control device comprises a computer that is programmable to control scanning and on/off operation of an emitter of deionizing radiation.

14. An apparatus comprising:

at least one electrostatic charging device that electrostatically charges a surface;

at least one discharging device that selectively discharges selected areas of the surface;

at least one dispenser dispenses a material that adheres to the charged areas to form a panel;

a melting device that melts the adhered material of the panel; and

a device to apply the panel to an extended surface forming a planar article.

15. The apparatus as claimed in claim 14, further comprising a device to apply a second material into areas of the discharged surface.

16. The apparatus as claimed in claim 15, wherein the second material is at least one of soluble and removable from the material.

17. The apparatus as claimed in claim 14, wherein the extended surface comprises a conveyor belt with a non-stick coating.

18. The apparatus as claimed in claim 14, wherein the at least one electrostatically charging device is a corona discharge device, and the at least one discharging device is a radiant energy source such as a computer controlled laser used to direct de-ionizing radiation onto the selected areas on the surface;

19. The apparatus as claimed in claim 14, wherein the material is a toner material in the form of a divided dry thermoplastic material.

20. The apparatus as claimed in claim 19, wherein at least a portion of the toner adheres to the electrostatically charged areas of the surface and at least a portion the toner does not adhere to the discharged selected areas.

21. The apparatus as claimed in claim 19, wherein the portion of toner not adhered to the discharged selected areas is removed via at least one removal device.

22. The apparatus as claimed in claim 14, wherein the melting device fuses the material and second material, and the material provides the designed layer of the planar article and the second material is removable by one of dissolving in water and a solvent.

23. The apparatus as claimed in claim 14, wherein the second material is a support matrix for the material so as to prevent collapse of overhangs in succeeding layers of the material.