EP0057513A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Coating apparatus and process
Assignee: Rio Tinto Alcan International Ltd
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Filing: 1982-01-12
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Granted: —
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Expires: 2002-01-12
Abstract
Abstract A longitudinally striated coating on a strip article is produced by advancing the article past an open side of an otherwise-enclosed trench (26) so that the article surface to be coated closes the open trench side, while delivering concurrent laminar flows of two different liquid coating materials to the trench at least at one locality spaced from the open side of the trench, to keep the trench completely filled and to deposit a layer of coating material on the moving surface of the article. Liquid circulation in the trench caused by the motion of the article surface so distributes the two coating materials along the trench that the applied coating layer is constituted of alternating longitudinal striations of the two materials. With delivery of concurrent flows of the two coating materials at each of plural localities spaced along the trench, positional and other variations of the striations can be achieved by varying the relative total flows delivered at different ones of these localities, for example to create a simulated woodgrain pattern.
Inventors
- 👤 Carl A. Wollam
- 👤 J. Lynn Gailey
- 👤 Alexander A. Chalmers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:12
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/34; B05C; B05C5/00; B05C5/02; B05C5/0254; B05C5/0266; B05C9/00; B05C9/06; B05D1/26; B05D1/265; B05D5/00; B05D5/06; B44; B44F; B44F9/00; B44F9/02; B05C5/0245; B05C5/025; B05D2252/00; B05D2252/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
177 words
A process for producing a longitudinally striated coating on a major surface of an elongate strip article, comprising continuously advancing the article lengthwise of itself past an open long side of an otherwise enclosed elongate trench extending transversely of the article with said major article surface disposed in facing proximate relation to said open trench side to constitute a moving wall closing said open side, while continuously delivering liquid coating material to the trench under pressure at least at one locality in a long side of the trench, and for maintaining the trench continuously entirely filled with liquid coating material, characterised in that at least one additional liquid coating material is delivered under pressure to the trench along a common path with and in concurrent laminar flow with the first said coating material, thereby to deposit a continuous coating layer on said major surface through said open side, the two liquid coating materials being circulated within the trench by motion of said major surface so as to be distributed in said coating layer in alternating longitudinal striations.
Claim 2
Dependent Claim
177 words
A process for producing a longitudinally striated coating on a major surface of an elongate strip article, comprising continuously advancing the article lengthwise of itself past an open long side of an otherwise enclosed elongate trench extending transversely of the article with said major article surface disposed in facing proximate relation to said open trench side to constitute a moving wall closing said open side, while continuously delivering liquid coating material to the trench under pressure at least at one locality in a long side of the trench, and for maintaining the trench continuously entirely filled with liquid coating material, characterised in that at least one additional liquid coating material is delivered under pressure to the trench along a common path with and in concurrent laminar flow with the first said coating material, thereby to deposit a continuous coating layer on said major surface through said open side, the two liquid coating materials being circulated within the trench by motion of said major surface so as to be distributed in said coating layer in alternating longitudinal striations.
Claim 3
Dependent Claim
21 words
A process according to claim 1, at the striations of the two coating materials differ visibly from each other in appearance.
Claim 4
Dependent Claim
19 words
A process according to claim 2, characterised in that the two coating materials differ from each other in pigmentation.
Claim 5
Dependent Claim
47 words
A process according to claim 1, characterised in that the delivering step comprises delivering the two liquid coating materials to the trench in concurrent laminar flows along a common path, at least at one locality in a long side of the trench spaced from said open side.
Claim 6
Dependent Claim
80 words
A process according to claim 1, characterised in that said coating materials are delivered to the trench under pressure along common paths at least at two localities, spaced apart along the length of the trench in a long side of the trench and spaced from said open side, such that adjacent longitudinal portions of said coating layer are respectively constituted of coating materials delivered at said two localities, each of said portions comprising alternating striations of said two coating materials.
Claim 7
Dependent Claim
50 words
A process according to claim 5, further characterised by the step of varying the relative total flows of coating materials respectively delivered at said two localities during the course of coating said major surface so as to vary the relative widths of said adjacent longitudinal portions of said coating layer.
Claim 8
Dependent Claim
26 words
A process according to claim 6, characterised in that the varying step comprises alternately starting and shutting off the total flows respectively delivered at said localities.
Claim 9
Dependent Claim
69 words
A process according to claim 1, further characterised by the step of advancing the strip article, immediately beyond said open side of said trench, past an extended surface facing the coated major surface of the article and fixed in relation to the trench, while maintaining the extended surface and the article major surface uniformly spaced apart by a distance equal to a predetermined desired thickness of said coating layer.
Claim 10
Dependent Claim
34 words
A process according to any one of claims 1 to 8, characterised in that the article is advanced around a roll disposed adjacent but in spaced relation to the open side of the trench.
Claim 11
Dependent Claim
35 words
A process according to any one of claims 1 to 9, characterised in that said strip article is advanced in a direction perpendicular to the long dimensions of the trench and the open side thereof.
Claim 12
Dependent Claim
40 words
A process according to any one of claims 1 to 10, further characterised by the step of varying the relative flows of said two liquid coating materials delivered to the trench for providing concurrent laminar flows at said one locality.
Claim 13
Dependent Claim
225 words
Apparatus for producing a longitudinally striated coating on a major surface of an elongate strip article, comprising structure defining an elongate trench for containing liquid coating material, said trench having an open long side of length equal to a predetermined desired width of coating to be applied to a strip article major surface, said trench being otherwise enclosed and further having at least one aperture, in a long side of the trench and spaced from said open side, for admitting flow liquid coating material to the trench, means for continuously advancing a strip article longitudinally past said trench open side in a direction transverse to the long dimension of the trench open side while maintaining a major surface of the article in facing proximate relation to the open side of the trench so as to constitute a moving wall closing said open side, characterised by means for delivering under pressure to the trench, through each said aperture, concurrent laminar flows of at least two liquid coating materials, for maintaining the trench entirely filled with the liquid coating materials and applying to the article major surface at said open side a coating layer thereof comprising alternating longitudinal striations of the two coating materials resulting from distribution of the two coating materials within the trench caused by movement of the article major surface at said open side.
Claim 14
Dependent Claim
225 words
Apparatus for producing a longitudinally striated coating on a major surface of an elongate strip article, comprising structure defining an elongate trench for containing liquid coating material, said trench having an open long side of length equal to a predetermined desired width of coating to be applied to a strip article major surface, said trench being otherwise enclosed and further having at least one aperture, in a long side of the trench and spaced from said open side, for admitting flow liquid coating material to the trench, means for continuously advancing a strip article longitudinally past said trench open side in a direction transverse to the long dimension of the trench open side while maintaining a major surface of the article in facing proximate relation to the open side of the trench so as to constitute a moving wall closing said open side, characterised by means for delivering under pressure to the trench, through each said aperture, concurrent laminar flows of at least two liquid coating materials, for maintaining the trench entirely filled with the liquid coating materials and applying to the article major surface at said open side a coating layer thereof comprising alternating longitudinal striations of the two coating materials resulting from distribution of the two coating materials within the trench caused by movement of the article major surface at said open side.
Claim 15
Dependent Claim
47 words
Apparatus as claimed in claim 12 characterised in that said delivering means includes means for varying the relative flows of said two coating materials through the same aperture thereby to vary the relative widths of the striations of the two coating materials in the applied coating layer.
Claim 16
Dependent Claim
48 words
Apparatus as claimed in claim 12 or claim 13, characterised in that there are at least two of said apertures spaced apart along the length of said trench, such that the applied coating layer comprises adjacent longitudinal portions respectively constituted of coating materials delivered through said two apertures.
Claim 17
Dependent Claim
43 words
Apparatus as claimed in claim 14, characterised in that.said delivering means includes means for varying the relative total flows of coating materials respectively delivered through different apertures, thereby to vary the relative widths of said adjacent longitudinal portions of the applied coating layer.
Claim 18
Dependent Claim
28 words
Apparatus as claimed in claim 15, characterised in that each of said varying means comprises valve means for selectively shutting off and permitting a flow of coating material.
Claim 19
Dependent Claim
60 words
Apparatus as claimed in any one of claims 13 to 17, characterised in that the trench-defining structure has an extended surface disposed, immediately beyond the trench open side in the path of strip advance, to face the coated major surface of the advancing strip article and to define therewith a gap uniformly equal to a predetermined desired coating layer thickness.
Claim 20
Dependent Claim
50 words
Apparatus as claimed in any one of claims 12 to 17, characterised in that the advancing means advances the strip past the trench open side in a direction parallel to the long dimension of the strip and perpendicular to the long dimension of the trench and the open side thereof.
Claim 21
Dependent Claim
59 words
Apparatus as claimed in any one of claims 12 to 18, characterised in that the advancing means comprises a roll having an axis parallel to the long dimension of the trench open side and a cylindrical surface positioned closely adjacent the trench open side, and means for moving the strip article around the roll past the trench open side.
References Cited (Backward Citations)
No citation records indexed.
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