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.

Adhesives for hearing aid assembly

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 4,000-6,000 acrylate UV
VIS
secondary heat cure
non-yellowing
excellent gap-filling
certified to USP Class VI standards
Vitralit® 7041 50-90 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 cyanoacrylate moisture,
room temperature
Film forming,
suitable for bonding porous materials,
biocompatible: certified to USP Class VI standards
Vitralit® UD 8540 1,800-2,500 acrylate UV
VIS
secondary humidity cure
optically clear
low shrinkage
duel curing
Vitralit® 7311 40-70 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.