AS40 - Butylen AS40 Plus Self-Amalgamating Inner Wrap Tape 50mm x 15M BUTYLEN tapes can be combined in various ways to make tape systems. All systems have in common that a self-amalgamating three-ply tape or a butyl tape is always used for the innermost layer of corrosion protection. Only tapes of this type amalgamate in the overlap area to form a sleeve-like coating that is practically diffusion resistant to water vapour and oxygen. Two tape system for the corrosion protective coating of metal pipes according to DIN 30672 and EN 12068. For highly corrosive conditions and high mechanical stresses. Features Description BUTYLEN-System AS40+ – R20HT • Mechanically highly resistant tape system (stress-class C-50 according to DIN EN 12068) • Sleeve-type coating due to amalgamation of innerwrap tape • Practically impermeable to water vapour and oxygen. • Resistant to soil bacteria and soil electrolyte • Compatible with coatings from PE PP FBE PU CTE and Bitumen. The BUTYLEN-System AS40+ Consists of: BUTYLEN-Primer HT • Solvent based priming solution. BUTYLEN-Tape AS40+ Black • 3-ply plastics tape with stabilised polyethylene backing and butyl rubber adhesive layers on both sides. • Fully amalgamating within overlap area. • Highly conformable to any surface structure by thick grey butyl rubber layer facing pipe surface. • Excellent bonding between adhesive and carrier film via co-extruded intermediate layer
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