ITW Plexus® Announces Revolutionary 1:1 Technology for Bonding of Large Composite Structures

Many advantages seen through the use of 1:1 technology

APRIL 2003 - ITW Plexus® announces the introduction of 1:1 ratio methacrylate adhesives for structural bonding of large composite structures fabricated in the marine industry. Two products have been released: MA560 and MA590 with more formulations scheduled for future release.

MA560 has a working time of 60 minutes while MA590 has a working time of 90 minutes. Both can be dispensed in large masses and bonds gaps of up to one and one-half inches. “We’re very excited about this technological breakthrough. The long open times, anti-sag properties, the ability to cure in large gaps without boil, small gaps without worry of inconsistent cure, all while being packaged in a 1:1 formulation once again demonstrates why Plexus® is the leader in Methacrylate technology,” said Pat Shannon, National Marine Accounts Manager of ITW Plexus®.

Another significant advantage associated with the 1:1 products is the high dispensing rates; up to 2.2 gallons per minute. “Dispensing rates are especially critical when bonding stringers larger than 28’ in length. The increased dispensing rates along with the extended open times allow a manufacturer plenty of time to dispense and fixture large stringer assemblies”, Shannon notes.

MA560 and MA590 were initially designed for the installation of composite stringers. However, because of there ability to consistently cure in small gaps, these products are also well suited in applications such as deck and hull joints or radar arch assemblies where bond gaps are typically very thin.

The 1:1 technology uses a non-geroter metering system that simplifies maintenance. It also allows for easy hand mixing for field repair or for smaller users who are not ready for the purchase of metering equipment.