Maiqiang T-400 3 PLY Inner layer tape

1.Excellent bonding between adhesive and carrier film via 3ply inner layer tape 2.Practically impermeable to water vapour

Coating System for pipelines-Inner Layer

Maiqiang 3 PLY tape is a three-ply cold applied tape with 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 machineThe 3 Ply tape shall be applied after the Liquid adhesive and before the outer-layer tape by hand or with a wrapping machine.

PROPERTIES	UNIT	T680	T6100	TEST METHOD
Color Carrie film		Black(grey/green)	Black(grey/green)
Adhesive inner layer Adhesive outer layer Thickness Carrie film		Black	black
		Black	black
	mm	0.3	0.3	ASTM D1000
Internal Adhesive	mm	0.34	0.45
Internal Adhesive	mm	0.16	0.25
Tensile  strength	N/cm	67	70	ASTM D1000
Elongation at break	%	450	500	ASTM D1000
Peel strength to pipe surface	N/cm			EN 12068
at 23ºC		18	20	Annex C
at 50ºC		1.3	1.5
Peel strength tape to tape	N/cm			EN12068
at 23ºC		25	30	Annex B
at 50ºC		3.5	4.0
Dielectric strength	Kv/mm	32	33.8	ASTMD149
Insulation Resistance	Ohm. m2			EN12068
Water Vapor Transmission	gm/m2/24h	0.1	0.1	ASTM E96
Brittleness temperature	ºC	-46+-4	-46+-4	Din53372
Water Absorption	%	0.1  max	0.1 max	ASTM D570
Impact resistance at 23ºC	J	18	18	EN 12068
Cathodic disbandment at 23ºC	Mm	15	15
at 50ºC		30	30	EN 12068
Lap hear strength at 50ºC	N/mm2	0.05	0.05	EN 12068

FeaturesExcellent 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 resistanceResistance to corrosion disbondmentHigh electrical resistanceHigh dielectric strengthHigh corrosion protection for steel substrates

Maiqiang T-400 3 PLY Inner layer tape