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The composition of the pipe wrap tape — polypropylene rubberized bitumen consists of three layers: PP film backing, rubberized bitumen adhesive layer, and separator sheet.
Adhesive: Rubberized Bitumen Compound
Film Backing: Polypropylene Woven Geotextile
Interleaving: Silicone Coated Separator Sheet
| Property | Test Temp | Unit | Requirements | Test Method |
|---|---|---|---|---|
Thickness |
— |
mm |
≥0.9 × nominal value |
Annex B |
Holiday detection at 5 kV/mm + 5 kV, max. 25 kV |
— |
— |
no holiday |
Annex C |
Impact resistance |
23 °C |
J/mm |
≥1.25 |
Annex D |
Indentation resistance, pressure |
23 °C |
N/mm2 |
0.1 |
Annex E |
Cathodic disbondment resistance at 28 days |
23 °C |
mm |
≤10 |
Annex G |
|
Peel strength between tape layers — inner/inner — outer/inner — inner/inner, outer/inner — outer/outer — outer/outer |
23 °C 23 °C 60 °C 23 °C 60 °C |
N/mm |
≥1.5 n.a b n.a n.a |
Annex L |
|
Peel strength — to steel surface — to steel surface — to plant coating — to plant coating after 28-day hot-water immersion at 50 °C — to steel surface after 28-day hot-water immersion at 50 °C |
23 °C 60 °C 23 °C 60 °C 23 °C 23 °C |
N/mm |
≥0.2 ≥0.04 ≥0.4 ≥0.04 ≥0.4 ≥0.04 |
Annex H Annex I |
Lap shear strength |
23 °C |
N/mm2 |
≥0.05 |
Annex J |
|
Thermal ageing resistance — Ratio of — elongation at break — peel strength between tape layers — peel strength to pipe surface |
— |
— |
P′100/P′0 ≥ 0.75 P′100/P′70 ≥ 0.8 P100/P0 ≥ 0.75 P100/P70 ≥ 0.8 |
Annex M |
☑ Standard: ISO21809-3 Type 12B-1
☑ Note: Custom-made is available to meet any customer special demand.
