PET HEAT SHRINK TUBING
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ADVANTAGES OF PET
PET Heat Shrink Tubing is an extremely unique material with impressive characteristics including:
▪ Ultra-thin wall, ultra-high strength, and high dielectric strength
▪ Can be recovered at relatively low temperatures
▪ Axial shrinkage pulls components together
▪ Can be transformed into custom parts by drawing/shrinking onto a shaped mandrel(conical, square, triangular, etc.)
▪ Can be “heat-set” so that it is stable up to a rescribed temperature
▪ Can be printed for shaft marking/indicating
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FEATURES
Features
Diameter range
0.006” – 1.5” (0.15 – 38.1 mm)
Wall thickness range
0.0001” – 0.004” (0.0025 – 0.10 mm)
Shrink ratios
1.1:1 up to 3:1*
Tight fit is best
15% gap or less**
Material shrink
temp range
185°F to 374°F (85°C to 190°C)
Material melt temp
473°F (245°C)
Recommended hot box range
300°F to 450°F (149°C to 232°C)
Releases
PET releases easily from most common thermoplastics. However, some low-durometer urethanes tend to tack to the PET and may require a resting period (~1hr) or may not be compatible. Run test samples with these materials.
Tensile Strength
Very high tensile strength can be realized (>20,000 PSI)
Electrical Insulation
Good
Surface Finish
Ultra smooth, hard, glossy finish
Color/Clarity
Available in clear and a variety of opaque and transparent colors
Bondability
Bondability：Can be bonded using a wide range of adhesives (surface treatment recommended)
Flex Fatigue
Very high flex fatigue properties
生物相容性
符合 USP VI 类和 ISO 10993要求
消毒
环氧乙烷、伽马辐射、电子束和高压灭菌（不建议重复进行高压灭菌）
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APPLICATION
Recommended Uses (Catheter Processing)
▪ Tube joining (variable stiffness catheters)
▪ Balloon bonding
▪ Shaft lamination
▪ Tipping
▪ General reflow (RX ports, etc.)
▪ Braid termination
▪ Masking for coating procedures
▪ Micro-hose clamps (compliant balloons, etc.)
▪ Encapsulation, bundling and strain relief
APPLICATION 1: VARIABLE-STIFFNESS CATHETERS
Because of its ultrathin walls, PET heat shrink tubing can be used to add stiffness to catheters without significantly adding to the profile of the device. By using different thicknesses of heat shrink tubing along the length of the catheter, you can achieve varying degrees of flexibility for improved control of the device.
For example, you could use heat shrink tubing with a one-mil wall at the back end of a catheter, a half-mil wall in the middle, a quarter-mil wall near the end, and none at the tip for full flexibility.
APPLICATION 2: PROTECTIVE COVERING/COATING & BUNDLING
PET heat shrink tubing is often used to cover laser cut hypo tubes, braided catheter shafts, spring coils,
radiopaque marker bands, and other parts that requirea thin but very strong outer layer. The tubing provides a smooth transition over sharp edges and can be sealed against fluid leakage. PET heat shrink tubing also can be used to cover tapered structures—such as tapered coils—that cannot easily be covered using conventional techniques. In addition, you can use PET heat shrink tubing to bundle and compress components such as plastic and metaltubing, wires, and optical fibers into the smallest possible
space. Ultrathin-wall tubing allows you to downsize or add features to a device without increasing the profile.For example, using PET heat shrink tubing to bundle components can free up enough space to add another working channel inside an endoscope. It might even enable you to reduce the size of a device by a whole French size.
Another use for PET heat shrink tubing is for bundling common plastic and metal tubes to create a quick,
