High temperature wrap-around heat shrink sleeve
CNP 80 system is a wrap-around heat shrink sleeve which replicates
the structure and the performance of factory applied three-layer PE
coatings. It is installed on a welded joint by wrapping it around
the welded joint of the gas & oil & water pipeline over the applied
layer of epoxy primer CNP-EP in the field. The sleeve (piece of
tape) is fixed on the lash with a closure patch.
Construction
First layer: Liquid epoxy, solvent-free two-component.
Second layer: High shear strength hot melt adhesive.
Third layer: Radiation cross-linked, high density polyethylene.
Features & Benefits
● CNP 80 is a wraparound sleeve with a separate closure
●Cross-linked backing provides superior mechanical and chemical
attack resistance.
●CNP 80 Sleeve provide super barrier protection against
corrosion,good performance of sealing, widely application range.
● High performance adhesive provides excellent resistance to
Cathodic Disbondment to against abrasion and chemical attack.
● Just-in-time customized lengths allow bulk rolls to be field cut
top protect any pipe size
● Dimpled backing provides a “permanent change” indicator for
application when heat.
● CNP 80 can be used on the PE, FBE, Coal Tar, DFBE coatings.
● Meet for standard ISO21809,EN12068,GOST
Product properties
| Radiation cross-link PE Backing |
| Tensile strength | ASTM D 638 | 22MPa |
| Elongation | ASTM D 638 | 550% |
Thermal ageing 150°C 21d elongation | ASTM D 638 EN 12068 | 420% 1.08 |
| Hardness, Shore D | ASTM D 2240 | 55 |
| Shrink force | ASTM D 638, 150°C | 43psi |
