Fast Curing Catheter Assembly with difficult-to-bond substrate

Customer Challenge

Following a change in their material suppliers, a medical device manufacturer required an ultra-fast curing adhesive for difficult to bond substrate, TPE.
Other industry solutions product was not able to provide the bond strength or cure speed necessary to achieve the desired outcome.

The customer objective was to find an adhesive that could successfully bond TPE despite it being a difficult substrate to bond.
High speed curing was required to enable immediate quality control testing.
Given the flexible nature of the substrate, it was also a necessity that the adhesive matched this flexibility.
Additionally, fluorescent detection of the adhesive was a requirement for the customer.

Henkel recommended LOCTITE^® AA3953 Light Cure Adhesive which is designed for superior adhesion where a fast-curing, highly flexible adhesive is required.
The Henkel solution enabled improved bond strength while increasing line speed and throughput, and resulted in fewer warranty claims.
LOCTITE^® AA3953 is a fluorescent, urethane acrylic adhesive used to bond TPEs as well as plasticized PVC and thermoset rubbers.
The selected product is colorless, transparent, fluorescent, of medium viscosity, and LED light or UV cured.
LOCTITE^® standard equipment including the Dual Channel Semi-Automatic Dispenser, Curejet^® LED and Light Cure Valve was used for accurate, repeatable shot sizes.
LOCTITE^® AA3953 is tested to ISO-10993 biocompatibility standards.

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