Tie Layer

  • Accelerate Your Prototyping
  • Fast
  • Easy
  • Free

Tie Layer is a new solution for catheter construction created to reduce delamination and ultimately improve patient safety. This ultra-thin thermoplastic layer is applied over a catheter liner during construction. Tie Layer creates a melt-bondable surface that improves adhesion to both the liner and catheter jacket during the reflow process.

Delamination is a challenging failure mode in catheter construction; it carries both risk and cost burden for device manufacturers. Detection typically does not occur until final testing – after catheter assembly is complete – resulting in significant product loss. Delamination can also lead to failures in the field and product recalls.

By creating a stronger bond between the outer catheter jacket and inner liner, Zeus’ Tie Layer solution increases consistency in catheter performance and ultimately improves patient safety. Tie Layer reduces inspection requirements, increases product yield, and lowers manufacturing costs. Tie Layer is a true total solution in catheter design and manufacturing.

Multiple Options

Tie layers can be used wherever there is a need to bond one surface to another.

Catheter Assembly

Tie layers are a convenient and highly useful option that can be used to enhance bonding of surfaces to the catheter or wire jackets. For catheter components, tie layer options include:

  • Tie layer-coated PTFE liners and multi-lumen tubing
  • Tie layer-coated FEP liners
  • Tie layer-coated polyimide tubing

Tie Layer can also be used to promote adhesion of a coated liner to the ID of a metallic tube. In fact, Tie Layer can be applied to almost any round substrate.

Available Tie Layer Materials Include:

  • Pebax® – 35D to 72D durometers
  • Vestamid® 75D (Nylons)

Coating thicknesses can be as low as 0.0001″ (0.0025 mm).

Don’t see what you want?   Tell us what you need.   Additional materials and durometers are available upon request.


    Catheter Construction – Tie layer coatings can be applied to bondable substrates such as etched PTFE liners to promote adhesion of the subsequent jacket during the reflow process of catheter construction.

    Metalic Hypotubes – Additionally, tie layer coatings can be used in conjunction with an etched PTFE liner and used to apply to the ID of a metallic tube, such as a laser cut hypotube, to create a very low friction  ID (lumen).

    Other – Tie layer coatings can be applied to components that can be coated and need improved bondability to top layer applied materials.


    Biocompatibility – For medical applications, tie layer coatings use only USP Class VI approved thermoplastic materials.

    Heat Weldable – Tie layer coatings easily melt to coincide with any jacket reflow process creating a strong and heat welded bond.

    Thin Layer – Tie layer coatings can be as low as 0.0001″ (0.0025 mm) to minimize the overall dimensions of your device.

    Bond Strength – Tie Layer increases liner-to-jacket bond strength ranging from 20-40% with minimal to moderate liner stretching.


    Standard capability ranges include OD’s of 0.015″ – 0.250″ (0.381 – 6.350 mm).  Custom sizes and colors are available.  Let us know your need – there is a good chance we have the solution.

    Tie Layer thicknesses range 0.0001″ – 0.0003″ (0.0025 – 0.0076 mm) (REF).