Title:
A METHOD OF PRINTING AN ELECTRIC HEATING ELEMENT, AND AN ELECTRIC HEATING ELEMENT PRODUCED THEREBY
Document Type and Number:
WIPO Patent Application WO/2019/137994
Kind Code:
A1
Abstract:
The invention provides a stencilled mesh for use in screen print ing apparatus, a method of screen printing using such a stencilled mesh, and a substrate printed as a result of screen printing using said stencilled mesh. The stencilled mesh is elastically deformable and the stencil is fixedly applied thereto. Ideally, the stencilled mesh is larger in cross-sectional area than a substrate to be printed, and the pattern provided therein defines multiple identical void regions through which a fluent printing composition can be forcibly caused to pass during screen printing onto the substrate upper surface and thus each of said discrete multiple identical void regions results in multiple identical corresponding patterns of said fluent printing composition being applied to said substrate. The invention is characterised in that the identical stencil void regions are continuous and comprise at least two distinct portions, a first portion in which is defined at least two adjacent separate elongate void portions substantially rectangular in shape and orientated with their longer edges parallel with the direction of travel of a squeegee disposed within the printing apparatus and adapted to be caused to move over one of the mesh surfaces, and a second portion in which is defined at least one meandering void portion having an entry point and an exit point at which points said meandering void portion is connected to a respective one of said elongate void portions, and further characterised in that said meandering void portion is serpentine in shape and comprises a plurality of essentially adjacent linear parallel parts, and a corresponding plurality of arcuate or angular parts which connect them, said linear parts being orientated substantially parallel with the longer edges of the elongate void portions and thus also with the direction o f travel of said squeegee, and yet further characterised in that the width of any one of the linear parts of a meandering void portion is at least one order of magnitude smaller than the width of both of the elongate void portions to which it is connected.
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Inventors:
LAWSON DAVID (GB)
DIGNUM MARK (GB)
DIGNUM MARK (GB)
Application Number:
PCT/EP2019/050533
Publication Date:
July 18, 2019
Filing Date:
January 10, 2019
Export Citation:
Assignee:
PROJECT PARADISE LTD (GB)
International Classes:
A24F40/46; A24F40/70; H05B3/26; H05K1/16; H05K3/12; A24F40/10; H05K1/02; H05K3/00
Domestic Patent References:
| WO2017005471A1 | 2017-01-12 |
Foreign References:
| US6169275B1 | 2001-01-02 | |||
| US3324212A | 1967-06-06 | |||
| EP2316286A1 | 2011-05-04 |
Other References:
ANONYMOUS: "The Gwent Group, Leaders in paste manufacturing, sensor/ biosensor development and Instrumentation .", 22 September 2015 (2015-09-22), XP055575247, Retrieved from the Internet [retrieved on 20190328]
Attorney, Agent or Firm:
DENMARK, James (GB)
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