Thermal Bonding Catheter

Thermal bonding catheter is a widely used bonding technology that uses hot melt materials as adhesives to connect two tubes by heating, melting and cooling to solidify as a catheter.

Thermal bonding technology is widely used in the medical device industry.
In the manufacture of medical devices such as medical catheters, infusion bags, and dressings, thermal bonding is a commonly used and important connection technology.
Reliable bonding strength and sealing performance are key requirements for medical devices, and thermal bonding can meet these requirements well.

Its basic principles are as follows:

First, the catheter itself is heated to a molten state by heating. Common heating methods include hot air, hot plates, etc. Then the two surfaces to be bonded are placed between the molten adhesive and a certain pressure is applied to make them fully contact. Finally, after a certain period of heating contact, the heating source is turned off to allow the catheter to cool and solidify, thereby forming a strong bonding interface.

The advantages of thermal bonding catheter are mainly reflected in:

  • It can form a bond close to the strength of the substrate itself and has a strong load-bearing capacity.
  • The thermal bonding process is simple, and automated production can be achieved, greatly improving efficiency.
  • No organic solvents are required, environmentally friendly, and in line with green manufacturing requirements.
  • It can bond plastics, metals, rubber and other materials.
  • It can form a sealed bonding interface, which is conducive to waterproof and dustproof.

Common thermal bonding techniques include:

Hot welding: place two surfaces on a heating plate to heat, then press and cool.
Hot air shrinking: use hot air to heat the tube surface, then press and weld.

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