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3-Ply PE Pipe Coating Tape / Underground Pipeline Inner Tapes for Corrosion Protection

1. 3-ply PE anti-corrosion inner tape system description:

The 3-ply PE anti-corrosion inner tape is Cold applied tape coating system for corrosion protection of Oil, Gas, Petrochemical, and Waste Water underground or overhead pipelines.

It is a three-ply cold applied tape with stabilized polyethylene backing and butyl rubber adhesive layers on both sides. It is also used as inner-layer tape. It shall be applied by hand or with a wrapping machine

The 3-Ply PE anti-corrosion inner tape shall be applied after the Liquid adhesive and before the outer-layer tape by hand or with a wrapping machine

2. 3-ply PE anti-corrosion inner tape structure

The specification of the tape consists of four layers,

Internal Adhesive layer:Butyl rubber

External Adhesive layer: Butyl rubber

Film backing:Special blend of stabilized polyolefines

Interleaf: Antiadhesive Film Treated with Silicone

3. 3-ply PE anti-corrosion inner tape features:

Excellent bonding between adhesive and carrier film via co-extruded intermediate layer.

Mechanically highly resistant tape system.

Practically impermeable to water vapour and oxygen.

Resistant to soil bacterial and soil electrolyte.

Compatible with coating from PE,PP,FBE,PU,CTE and Bitumen and ext… .

A Total Coating System with:

High adhesion and shear resistance

Resistance to corrosion disbondment

High electrical resistance

High dielectric strength

High corrosion protection for steel substrates

4. 3-ply PE anti-corrosion inner tape physical properties

PROPERTIES	UNIT	T 480	T 4100	TEST METHOD
Color Carrie film Adhesive inner layer Adhesive outer layer	--	black(grey/green) black black	black(grey/green) black blac	--
Thickness Carrie film Internal Adhesive External Ahesive	mm mm mm	0.30 0.34 0.16	0.30 0.45 0.25	ASTM D 1000
Tensile strength	N/cm	67	70	ASTMD1000
Elongation at break	%	450	500	ASTMD1000
Peel strength to pipe surface at 23 ℃ at 50℃	N/cm	18 1.3	20 1.5	EN 12068 Annex C
Peel strength tape to tape at  23 ℃                         at 50℃	N/cm	25 3.5	30 4.0	EN 12068 Annex B
Dielectric strength	Kv/mm	32	33.8	ASTMD149
Insulation    Resistance	Ohm.m²	1012	1012	EN 12068
Water Vapor Transmission	g/ m2 /24h	0.1	0.1	ASTM E 96
Brittleness temperature	℃	-46±4	-46±4	DIN53372
Water Absorption	%	0.1 max	0.1 max	ASTM D 570
Impact resistance at 23°	J	18	18	EN 12068
Cathodic disbandment at 23°c at 50°c	mm	15 30	15 30