Adhesives Magazine

HENKEL CORP.: Loctite Light/Moisture Cure Adhesives

December 15, 2008


Henkel Corporation has introduced a line of single-component light and moisture curing silicone adhesives designed for use on medical devices that incorporate silicone materials or require highly flexible bond joints or coatings. All three products in the line cure within 30 seconds on exposure to a suitable UV/visible light source.

These medical silicone adhesives eliminate part racking and allow immediate quality control testing. To ensure robust assemblies, the products offer high-bond strengths on silicone and plastics including polycarbonate. The silicones demonstrate tear strengths in excess of 50 pounds per inch and elongation of more than 140 percent in the cured state, resulting in tough, yet flexible bond lines. These adhesives are ideal for use on catheters, respiratory devices and connections, medical tubing and tracheotomy devices.

Loctite® 5055 is a low viscosity, light yellow, transparent liquid that offers excellent adhesion to polycarbonate and tensile strengths of nearly 1500 psi. Offering a similar uncured appearance, medium viscosity Loctite® 5056 offers heat and humidity resistance in its cured state. These two new light cure silicone adhesives join Loctite® 5240, introduced earlier this year. A UV/visible light curing silicone, Loctite® 5240 offers a secondary moisture cure that takes place in shadowed areas in 24 to 72 hours. This adhesive cures to depths of 0.75 inches and delivers a colorless bond line.

All three Loctite® products meet strict ISO-1093 biocompatibility requirements, making them ideally suited for medical device assembly.

For more information on Loctite® Medical Silicone Adhesives, visit www.loctite.com.