Molding Compounds are suited for hearing aid fabrication.
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Press Release Summary:
Available in 14 low-viscosity and 8 high-viscosity verisons, Loctite® ResinAid molding compounds are offered in various colors to closely match natural skin tones. Compounds comply with ISO-10993 standards for skin surface medical devices. Line also includes 9 adhesive formulations for bonding shell components. Batch curing chamber, Loctite® ResinAid Shell Curing System, light cures multiple assemblies while blanketing parts with inert gas to ensure surface gloss.
Original Press Release:
Henkel Expands Line of Molding Compounds for Hearing Aid Fabrication
Rocky Hill, Conn. - August 24, 2004.... Henkel Corporation has expanded its line of Loctite® ResinAid molding compounds, adhesives, and equipment for hearing aid shell fabrication, assembly, and repair. The expanded product line includes UV/visible light curable molding compounds, light cure equipment, and instant adhesives, UV silicones, light cure acrylics, and light cure cyanoacrylate adhesives.
Fourteen (14) low viscosity and eight (8) high viscosity molding compounds are available in a range of colors for shell fabrication. With four variations of pink, ten variations of brown, two reds, two blues, and four clear formulations, hearing aid manufacturers can be sure of closely matching natural skin tones. Loctite® ResinAid molding compounds comply with ISO-10993 standards for skin surface medical devices. The line also features nine adhesive formulations used for bonding shell components.
In addition, Henkel offers a complete line of application and curing equipment, including the newest offering, the Loctite® ResinAid Shell Curing System, a batch curing chamber designed to light cure multiple assemblies while blanketing the parts with inert gas to ensure excellent surface gloss. The equipment line also includes simple pressure-time dispense systems and molding compound retrieval applicators that ensure repeatable, consistent hearing aid manufacturing.
The Process
The ResinAid process is simple and fast. Once a solid mold of the patient's ear is received and the shell investment has been made, the shell molding process begins. The investment is filled with the one-part ResinAid low-viscosity molding compound, covered, and placed into the ResinAid light cure system for initial cure. Upon exposure to light for just 5 to 20 seconds, the outer portion of the shell cures to a uniform wall thickness of 0.030" throughout. The remaining molding compound is then poured out of the investment; the shell is filled with a water/glycerin solution, and returned to the cure chamber for full and final cure.
Once cure is complete, a high-viscosity molding compound is used to form a vent channel and is cured using a spot light cure system. The receiver is assembled and positioned in the shell where it is tacked in place with a light cure silicone adhesive. Once the electronics are inserted into the shell, the faceplate is bonded to the open end of the shell using instant or light cure adhesives. Finally, the faceplate is trimmed to the contours of the shell, and the hearing aid production process is complete.
For more information on the Loctite® ResinAid product family, call 1-800-323-5106 or visit the company's website at www.loctite.com/medical.
"Henkel - A Brand like a Friend". With brands and advanced technologies, Henkel makes people's lives easier, better, and more beautiful. The business sector Henkel Technologies is one of the leading suppliers of adhesives, sealants and surface treatments for industrial customers. Strong brands, such as Loctite, Teroson, P3, Hysol and Liofol, are key drivers behind the success of the business sector. Henkel Technologies serves the automotive, electronics, aerospace, metal industries, assembly, maintenance and repair, consumer goods and packaging industries.
The Henkel Group operates in three strategic business areas - Home Care, Personal Care, and Adhesives, Sealants and Surface Treatments. In fiscal 2003 the Henkel Group generated sales of 9.436 billion euros and an operating profit (EBIT) of 706 million euros. 50,000 employees work for the Henkel Group worldwide. People in 125 countries around the world trust in brands and technologies from Henkel.
