EP0137663A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Impact resistant moisture impermeable resinous coating and method of applying same
Assignee: Shawcor Ltd
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Filing: 1984-08-20
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Granted: —
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Expires: 2004-08-20
Abstract
Abstract A method of forming an impact-resistant, moisture impermeable coating on the surface of an object, such as a pipe (10), comprises heating the object to a temperature above which a resin applied to the heated surface will fuse, so that the resin forms a continuous layer (43). Before the layer (43) of resin has gelled, a second layer (44) consisting of a finely divided particulate mixture of the resin and a solid such as glass fibre or mica is applied over the first layer. The two layers are fused together to form a homogeneous resin covering (45) with one layer reinforced by the above solid. The resin coating is then cured and the object allowed to cool. An apparatus for carrying out the method is also described.
Inventors
- 👤 Stephen Evans Mcconkey
- 👤 Gordon George Macphail
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 09:49
CPC Classifications
B; B05; B05D; B05D1/00; B05D7/00; B05D7/14; B05D7/146; B05D5/00; B05D5/02; F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L58/1054; F16L58/1072
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
117 words
A method of forming an impact resistant moisture impermeable resinous coating on the surface of a metallic object (10) which comprises applying a resin onto said surface, the surface having been heated to a temperature above the fusion temperature of the resin, the resin being fused thereon to form a first continuous layer (43), characterized by the steps of applying onto said layer (43) before it has gelled a finely divided mixture consisting of said resin and a particulate solid to form a second continuous layer (44) covering the first layer, fusing the layers together to form a homogeneous resin covering (45) with the particulate solid reinforcing the second layer, and cooling and curing the applied resin.
Claim 2
Independent Claim
117 words
A method of forming an impact resistant moisture impermeable resinous coating on the surface of a metallic object (10) which comprises applying a resin onto said surface, the surface having been heated to a temperature above the fusion temperature of the resin, the resin being fused thereon to form a first continuous layer (43), characterized by the steps of applying onto said layer (43) before it has gelled a finely divided mixture consisting of said resin and a particulate solid to form a second continuous layer (44) covering the first layer, fusing the layers together to form a homogeneous resin covering (45) with the particulate solid reinforcing the second layer, and cooling and curing the applied resin.
Claim 3
Dependent Claim
22 words
A method according to claim 1, characterized in that the resin of said first and second layers is applied in powdered form.
Claim 4
Dependent Claim
25 words
A method according to claim 2, characterized in that the resin of said first layer and said finely divided mixture are applied by electrostatic spraying.
Claim 5
Independent Claim
33 words
A method according to any preceding claim, characterized in that the metallic object is a cylindrical pipe (10), the pipe being rotated continuously about its axis during said application, cooling and curing steps.
Claim 6
Independent Claim
16 words
A method according to any preceding claim, characterized in that the resin is an epoxy resin.
Claim 7
Independent Claim
17 words
A method according to any preceding claim, characterized in that the particulate solid consists of glass fibres.
Claim 8
Independent Claim
21 words
A method according to any one of claims 1 to 5, characterized in that the particulate solid consists of mica flakes.
Claim 9
Dependent Claim
54 words
A metallic object having an impact resistant moisture impermeable resinous coating thereon, characterized in that said coating consists of inner and outer layers (43,44) fused together to form a homogeneous covering, the outer layer being reinforced by a particulate solid reinforcement embedded therein and the inner layer (43) being substantially devoid of such reinforcement.
Claim 10
Dependent Claim
54 words
A metallic object having an impact resistant moisture impermeable resinous coating thereon, characterized in that said coating consists of inner and outer layers (43,44) fused together to form a homogeneous covering, the outer layer being reinforced by a particulate solid reinforcement embedded therein and the inner layer (43) being substantially devoid of such reinforcement.
Claim 11
Dependent Claim
17 words
A metallic object according to claim 8, characterized in that the object is a cylindrical pipe (10).
Claim 12
Dependent Claim
27 words
A metallic object according to claim 8 or 9, characterized in that the particulate solid reinforcement content of the outer layer (44) is from 5-30% by weight.
Claim 13
Independent Claim
26 words
A method of forming an impact-resistant, moisture-impermeable coating on the surface of a metallic object substantially as hereinbefore described and with reference to the accompanying drawings.
Claim 14
Independent Claim
26 words
A method of forming an impact-resistant, moisture-impermeable coating on the surface of a metallic object substantially as hereinbefore described and with reference to the accompanying drawings.
Claim 15
Independent Claim
27 words
An apparatus for forming an impact resistant, moisture-impermeable coating on the surface of a metallic object substantially as hereinbefore described and with reference to the accompanying drawings.
Claim 16
Independent Claim
27 words
An apparatus for forming an impact resistant, moisture-impermeable coating on the surface of a metallic object substantially as hereinbefore described and with reference to the accompanying drawings.
Claim 17
Dependent Claim
32 words
An object produced by the method of any one of claims 1 to 7 and/or substantially as hereinbefore described and with reference to Figure 1 and/or Figure 2 of the accompanying drawings.
References Cited (Backward Citations)
US3904346A
Cited
GB1470663A
Cited
DE2455443A1
Cited
AT345945B
Cited
DE2639051A1
Cited
DE3046263A1
Cited
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