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September 4, 2007

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Originally Published MPMN September 2007



Light-curable adhesive


Bonding dissimilar substrates such as polycarbonate, nylon, PET, acrylic, Pebax, and stainless steel typically requires the use of multiple adhesives or assembly methods. A light-curable adhesive designed to provide a single solution for bonding combinations of substrates, MD 209-CTH is suited to simplifying the catheter assembly process. The adhesive fluoresces under low-intensity black light for in-line inspection. It is also solvent free and cures in seconds upon exposure to UV and visible light.
Dymax Corp., Torrington, CT

Structural adhesives


A supplier of structural adhesives for medical devices offers a range of UV and epoxy adhesives. Formulations are available for bonding needles and tubing sets. Designed to offer accelerated cure times and reduce stress cracking, the adhesives can also bond dissimilar materials. Component-bonding adhesives formulated to resist harsh environmental conditions also are supplied.
Bondmaster, a div. of National Adhesives, Monroe, NJ

Flexible-packaging adhesive


An adhesive features sure-seal DotCoat technology designed to enhance the value and functionality of Tyvek, Ovantex, and paper for rollstock, lid, and pouch applications. Xhale adhesive technology uses a proprietary hot-melt coating process that consists of applying a uniform dot pattern to substrates being bonded. The dots merge during sealing to provide a caulked effect that verifies that a strong seal is made. Medical device manufacturers may be able to accelerate their EtO sterilization cycles, increase run speeds, and reduce costs owing to the product's high level of porosity, according to the supplier. The adhesive resists condensation and UV light, and offers smooth peelability.
Oliver Medical, Grand Rapids, MI

Electronically conductive adhesives


A line of electronically conductive pressure-sensitive adhesives create electrical interconnections in devices such as electrodes, defibrillators, and biosensors. The adhesives remain stable and consistent while maintaining bond strength under mechanical and environmental stress. Several tape configurations are offered, including thin transfer films, and single- and double-faced constructions. ARcare 90366, a highly conductive 2-ml transfer adhesive, and ARcare 90447, ­a double-faced electronically conductive adhesive with a nonwoven conductive carrier, are two examples of available products. They can be customized by modifying adhesive chemistry, construction, and thickness.
Adhesives Research, Glen Rock, PA

Pressure-sensitive adhesives


A manufacturer offers pressure-sensitive adhesives for medical devices. Scantapes and Scanfoams are designed to be used as adhesive components in surgical products, electrodes, and IV and diagnostic devices. They also can be used in allergy test devices, wound dressings, and ostomy devices. The company also offers a range of skin-friendly tapes and wound dressings on coated nonwovens, films, foams, and fabrics.
Norgesplaster, the medical device div. of Actavis Norway A/S, Vennesla, Norway

Nonwoven with silicone-gel adhesive


A single-coated nonwoven product features a skin-friendly silicone-gel adhesive. The Rx1306P material is designed for use in a range of direct-skin applications, such as neonatal care, medical device attachment, wound care, hypertrophic scar management, and skin therapy. The nonwoven backing is a tan-colored version of the manufacturer's white Bioflex Rx1248P. It blends well with skin tones for inconspicuous wear. The product consists of a 2.4-oz nonwoven material that is coated on one side with a 7.0-ml-thick layer of silicone-gel adhesive and is supplied on a 5.0-ml clear film liner. It can be removed, cleaned, and reused multiple times.
Scapa Medical, Windsor, CT

Foam-bonding guides


Two manufacturers recently completed studies on the bonding capabilities of their adhesive tapes and polyurethane foam systems to supply engineers with information on selecting proven product candidates for evaluation. The International Foam-Bonding Charts are designed to help customers reduce costs and development time when selecting foam and foam-bonding adhesive systems. The charts offer guidelines for creating products that combine one supplier's adhesive tapes and the other's polyurethane foam products.
Adchem Corp., Riverhead, NY

Foamex International Inc., Linwood, PA

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