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FLEXIBLE BONDING SOLUTIONS FOR MEDICAL DEVICE ASSEMBLY

FLEXIBLE BONDING SOLUTIONS FOR MEDICAL DEVICE ASSEMBLY
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FLEXIBLE BONDING SOLUTIONS FOR MEDICAL DEVICE ASSEMBLY

Product catalog summary
Introduction
LOCTITE® AA 3951 and AA 3953 are advanced light cure adhesives developed by Henkel, designed for flexible medical device assembly. These adhesives comply with ISO 10993 biocompatibility standards, making them suitable for medical applications.
Specifications
These adhesives offer high bond strengths on flexible substrates and exhibit high elongation. They are LED curable and highly fluorescent, allowing for easy detection in both cured and uncured states using black light or vision systems.
Application and Curing
LOCTITE® adhesives can be dispensed manually or through semi-automated and fully automated systems. They can be cured using UV or visible light, with the latest LED curing units providing rapid curing capabilities.
Detection and Bonding Challenges
Fluorescent additives in the adhesives facilitate detection. For difficult bonding applications, such as low-energy plastics like polyethylene and PTFE, LOCTITE® SF primers combined with cyanoacrylate adhesives ensure reliable adhesion without complex surface treatments.
Product Data
  • LOCTITE® AA 3951: Colourless to straw, viscosity 200 mPa.s, shear strength on polycarbonate 22.5 N/mm², tensile strength 22.9 N/mm², elongation 250%.
  • LOCTITE® AA 3953: Colourless to straw, viscosity 550 mPa.s, shear strength on polycarbonate 22.5 N/mm², tensile strength 22.1 N/mm², elongation 233%.
  • LOCTITE® AA 3926: Transparent hazy, viscosity 5,500 mPa.s, shear strength on polycarbonate 20.1 N/mm², tensile strength 19 N/mm², elongation 331%.
  • LOCTITE® 4314: Light yellow green to dark blue, viscosity 200 mPa.s, shear strength on polycarbonate 22 N/mm², tensile strength 25 N/mm², elongation 17%.
  • LOCTITE® 4902: Clear colourless liquid, shear strength on polycarbonate 7.9 N/mm², elongation 155%.
  • LOCTITE® SI 5056: Light yellow, transparent, viscosity 2,200 mPa.s, shear strength on polycarbonate 4 N/mm², elongation >170%.
Conclusion
Henkel's LOCTITE® adhesives provide robust solutions for medical device assembly, offering flexibility, high bond strength, and ease of detection. For specific applications and detailed specifications, consulting Henkel's Technical Data Sheets is recommended.
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Catalog excerpts

FLEXIBLE BONDING SOLUTIONS FOR MEDICAL DEVICE ASSEMBLY-1

FLEXIBLE BONDING SOLUTIONS FOR MEDICAL DEVICEASSEMBLY LOCTITE® AA 3951 and AA 3953 are the latest light cure innovations from Henkel. They have been tested to Henkel’s protocols based on ISO 10993 biocompatibility standards. These medical device adhesives are ideally suited for the assembly of a variety of flexible medical devices. HIGH BOND STRENGTHS ON FLEXIBLE SUBSTRATES HIGH ELONGATION Henkel Adhesive Technologies

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FLEXIBLE BONDING SOLUTIONS FOR MEDICAL DEVICE ASSEMBLY-2

The data provided represents typical properties. Please consult Henkel’s Technical Data Sheets for more detailed data and test methods. * with LOCTITE® SF Primer 7701 ** estimated data Henkel Adhesive Technologies The data contained herein are intended as reference only. Please contact Henkel Technical Support Group for assistance and recommendation on specifications for these products. Except as otherwise noted, all marks used above in this printed material are trademarks and/or registered trademarks of Henkel and/or its affiliates in US, Germany, and elsewhere. CURING LOCTITE® Tough & Flexible...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.