The CANUSA Multi-Layer
System is a heat shrinkable joint protection system which consists of three layers - crosslinked
polyolefin backing, hot melt adhesive, and a two-part epoxy primer. This
new and improved Multi-Layer System, designed for operating temperatures up to 80ºC
(75ºF), combines excellent corrosion protection with lower pipe preheat
temperatures than required with comparable sleeves of traditional design. The three-layer
sleeve system is fully compatible with Fusion Bonded Epoxy and with-direct bond or
three-layer polyethylene line coatings.
Historically, achievement of superior performance levels at
these temperatures would require a two-layer sleeve or tape with a hot-melt adhesive
requiring very high pre-heat temperatures. The new Multi-Layer System can achieve high
adhesion to steel with significantly lower preheat in the field. Lower pre-heat will save
both time and money during pipeline construction. The Multi-Layer System will provide
pipeline joint protection with long-term integrity.
