POST AND METHOD OF PROVIDING A POST
A method of providing a post includes providing an inner member, and providing an outer tubular layer of polymer or plastic around the inner member, the outer tubular layer including an outer surface having a surface roughness Ra of at least 3 μm. A post is also provided.
1 . A method of providing a post, the method comprising:
providing an inner member; and
providing an outer tubular layer of polymer or plastic around the inner member, the outer tubular layer comprising an outer surface having a surface roughness Ra of at least 3 μm.
2 . The method according to claim 1 , wherein the method comprises modifying the surface roughness of the outer surface to the surface roughness Ra of at least 3 μm while the outer tubular layer is provided around the inner member.
3 . The method according to claim 1 , wherein the method comprises modifying the surface roughness of the outer surface to the surface roughness Ra of at least 3 μm by wrapping a sheet onto the outer surface prior to consolidation of the outer tubular layer, and removing the sheet from the outer surface after consolidation of the outer tubular layer.
4 . The method according to claim 3 , wherein the sheet comprises a peel ply sheet.
5 . The method according to claim 3 , wherein the sheet is wrapped substantially helically onto and around the outer surface.
6 . The method according to claim 1 , wherein the method comprises modifying the surface roughness of the outer surface to the surface roughness Ra of at least 3 μm by machining, knurling and/or blasting of the outer surface.
7 . The method according to claim 1 , providing the inner member comprises winding the inner member by means of filament winding.
8 . The method according to claim 1 , wherein providing the outer tubular layer comprises winding the outer tubular layer around the inner member.
9 . The method according to claim 1 , wherein the inner member comprises a tubular layer.
10 . The method according to claim 1 , wherein the inner member comprises fiber-reinforced polymer or fiber-reinforced plastic.
11 . A post, comprising:
an inner member; and
an outer tubular layer of polymer or plastic around the inner member;
wherein the outer tubular layer comprises an outer surface having a surface roughness Ra of at least 3 μm.
12 . The post according to claim 11 , wherein the inner member comprises a tubular layer.
13 . The post according to claim 11 , wherein the inner member comprises fiber-reinforced polymer or fiber-reinforced plastic.
14 . The post according to claim 11 , wherein the post comprises a utility pole.
15 . A method of providing a post, the method comprising:
providing an inner member;
providing an outer tubular layer of polymer or plastic around the inner member; and
imprinting a surface structure on an outer surface of the outer tubular layer to provide a surface roughness Ra of the outer surface of the outer tubular layer of at least 3 μm.
16 . The method of claim 15 , wherein the outer tubular layer comprises a thermoplastic, the method further comprising curing the thermoplastic after imprinting the surface structure on the outer surface of the outer tubular layer.
17 . The method according to claim 15 , wherein imprinting the surface structure on the outer surface of the outer tubular layer comprises wrapping a sheet onto the outer surface prior to consolidation of the outer tubular layer, and removing the sheet from the outer surface after consolidation of the outer tubular layer.
18 . The method according to claim 17 , wherein the sheet comprises a peel ply sheet.
19 . The method according to claim 17 , wherein the sheet is wrapped substantially helically onto and around the outer surface.
20 . The method according to claim 15 , wherein imprinting the surface structure on the outer surface of the outer tubular layer is performed while the outer tubular layer is provided around the inner member.