Adhesives for Hearing Aid Assembly
Panacol-USA offers light curable medical device adhesive products that address the challenges of hearing aid assembly and their operating environments. The inner ear canal surface is acidic, coated with a combination of oil, perspiration, and ear wax. Hearing aid devices must function in this wonderland, and require assembly adhesives that are impervious to these substances to ensure reliable operation. Hearing aid assembly also has its challenges. Shells and faceplates are molded in assorted colors using pigmented resins. Pigmentation reduces the transmission of light energy, which has a negative impact on curing typical light curable adhesives. Longer curing cycles and higher power equipment is typically required to overcome lower light transmission.
Panacol-USA offers light curable medical device adhesive products that address the challenges of hearing aid assembly and their operating environments. Panacol-USA’s selection of adhesives includes our LED light curable adhesives. LED curable adhesives will fully cure under low intensity UV or visible light in seconds. They are ideal for use with LED light curing equipment. The ability to cure with low intensity light makes these adhesives particularly well suited for applications involving pigmented substrates. Typical applications include faceplate/shell bonding, as well as attaching receiver tubes to the shell.
LEDcure adhesives are extremely clear in appearance. They offer cured properties from hard/rigid to soft/flexible. Cured surfaces are smooth and tack-free, including products with the greatest elongation and flexibility.
Light curable adhesives from Panacol-USA are used to bond the pigmented miniature parts of hearing aids
UV curing equipment:
UV system solutions with Panacol uv adhesives and innovative curing systems from Honle
View the hearing aid/audiology device assembly adhesives listed below for a possible candidate for your application. Please contact Panacol-USA to confirm your product selection and to secure additional application assistance, including samples and process recommendations. In the event that these standard products do not satisfactorily address your performance requirements, Panacol-USA will investigate other solutions that include development of adhesive specifically tailored to the complexity of your application.
| Adhesives: | Viscosity [mPas] | Base | Curing* | Properties |
|---|---|---|---|---|
| Vitralit® 5140 | 250-500 | acrylate |
UV VIS |
Flexible, well suited for bonding plastics with low UV translucence and permeable to visible light, biocompatible: certified to USP Class VI standards |
| Vitralit® 6108 T | 3,000-6,000 | acrylate |
UV VIS secondary heat cure |
non-yellowing excellent gap-filling certified to USP Class VI standards shear thinning |
| Vitralit® 7041 | 50-90 (LVT 25°C, Sp. 2/60 rpm) | acrylate |
UV VIS |
Excellent adhesion to glass, plastics and metals; biocompatible: certified to USP Class VI standards |
| Vitralit® 7090 VHS | 40-100 | acrylate |
UV VIS |
Dry surface, very high adhesion to plastics, biocompatible: certified to USP Class VI standards |
| Vitralit® 2004 F | 60-100 | epoxy |
UV secondary heat cure |
fluorescing flexible autoclavable dry surface after curing low ion content sprayable |
| Cyanolit® 203 TX | shear thinning | cyanoacrylate |
moisture, room temperature |
Biocompatible: certified to USP Class VI standards |
| Cyanolit® 241 F | 30-50 | cyanoacrylate |
moisture, room temperature |
Capillary flow, biocompatible: certified to USP Class VI standards |
| Cyanolit® 732 F | 230-350 (LVT, 25 °C, Sp. 2/60 rpm) | cyanoacrylate |
moisture, room temperature |
Film forming, suitable for bonding porous materials, biocompatible: certified to USP Class VI standards |
| Vitralit® UD 8540 | 1,800-3,200 (Rheometer, 25°C, 10s^-1) | acrylate |
UV VIS secondary moisture cure |
optically clear low shrinkage dual curing |
| Vitralit® 7311 | 30-100 | acrylate |
UV VIS |
High resistance to alcohols and moisture non-yellowing very high adhesion to plastics, glass and metals suitable for bonding large areas certified according to USP Class VI |
| Vitralit® 7313 | 40-70 | acrylate |
UV VIS |
Flexible high elongation at break perfect solution for bonding large surfaces very high adhesion to plastics glass and metals |
*UV = 320 - 390 nm VIS = 405 nm
To download the technical datasheets (TDS) please click on the adhesive name.