发明授权
- 专利标题: Protective wrapping material
- 专利标题(中): 保护性包装材料
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申请号: US413129申请日: 1989-09-27
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公开(公告)号: US4983449A公开(公告)日: 1991-01-08
- 发明人: Robert M. Nee
- 申请人: Robert M. Nee
- 申请人地址: TX Ennis
- 专利权人: Polyguard Products Incorporated
- 当前专利权人: Polyguard Products Incorporated
- 当前专利权人地址: TX Ennis
- 主分类号: B32B11/04
- IPC分类号: B32B11/04 ; E02D31/02 ; F16L58/16
摘要:
A continuous strip non-shielding and pressure-resistant wrapping material for protecting buried metallic pipe is disclosed. The wrapping material comprises a continuous layer of cold-flowable rubberized bitumen bonded to a substantially non-elastic porous support backing with a release film positioned on the exposed face of the bitumen to protect the bitumen prior to application. When applied to a metallic pipe, the protective bitumen is secured to and held in place by the non-elastic support backing and thus cannot sag away from the pipe. The porous support backing provides potential electric current paths through each pore so that cathodic protection can be effectively utilized to protect against corrosion in even the smallest holiday in the bitumen layer.
公开/授权文献
- US5613625A Anticounterfeit device for dispenser 公开/授权日:1997-03-25