FEP HEAT-SHRINKABLE TUBING WITH A SHRINKAGE RATIO OF 1.3:1

FEP heat-shrinkable tubing

We manufacture FEP heat-shrinkable tubing basically in two different shrinkage ratios of 1.3:1 and 1.6:1. Our FEP heat-shrinkable tubing is easy to process and has a very smooth surface. Our FEP heat-shrinkable tubing is applied, for example, in the food industry to protect UV spotlights or luminaries and to provide a coating for conveyor rollers and rollers, in the chemical industry to protect sight glasses or level sensors, in electrical applications for insulation, in medical technology as a “sliding medium” in endoscopic applications and in the printing industry to coat printing rollers.

We are manufacturers of tubing and heat-shrinkable tubing and therefore offer an extensive range of standard dimensions, which can usually be supplied at short notice and in smaller quantities. Apart from our standard dimensions, we also manufacture customised dimensions that are perfectly tailored to your product. Please feel free to contact us at any time.

Overview of the most important properties of our FEP heat-shrinkable tubing

  • easy to apply
  • UV-resistant
  • food-safe
  • temperature resistant between -100°C and 205°C
  • highly transparent
  • sterilizable
  • anti-adhesive

PROCESSING INSTRUCTIONS FOR FEP HEAT-SHRINKABLE TUBING

Safety instructions:

Avoid temperatures above 330°C during processing. The decomposition temperature of PTFE is reached at this point. Fluoropolymer fever and other secondary manifestations are possible. Process PTFE heat-shrinkable tubing only when a suitable exhaust system is in place.

Application:

The optimum processing window for our PTFE heat-shrinkable tubing is between 160°C and 220°C.
It is recommended to use ring nozzles, stationary or conveyor ovens for shrinking
Objects with a diameter of 15mm or more should always be shrunk from the centre to the ends.

THE FOLLOWING ERROR PATTERNS ARE TYPICAL DURING PROCESSING:

1. The heat-shrinkable tubing is not tightly attached to the object

If temperature is applied to the heat-shrinkable tubing from the outside, the heat-shrinkable tubing isolates the temperature from the object. In this case, the object is too cold and cools the heat-shrinkable tubing from the inside. Consequently, it does not fit tightly onto the object.
The heating should be continued for a longer period of time in order to heat up the processed object accordingly.

2. The processed object is “wavy”after shrinking

Any visible waves that appear on the shrunken object are usually air inclusions. The best way to avoid this is to reduce the temperature and at the same time increase the exposure time. If this does not prove effective, the shrinking process should be initiated from the centre of the processed object. Start from the centre and proceed to both sides. This will force excess air out to the ends.

In the event that waves persist, it is possible that the contracted object is “outgassing”. In this case, please contact us to solve the problem jointly.

3. The heat-shrinkable tubing ruptures during the shrinking process

The polymer is soft and fragile throughout the shrinking process. The heat-shrinkable tubing may crack if the objects are very sharp-edged. The same applies to selective overheating in the course of the shrinking process. If the product is subject to repeated damage, try using the next larger size. In many cases, the problem will resolve itself.

However, please do not hesitate to contact us if you have any problems with the application of our heat-shrinkable tubing. It is also possible to provide your products with a coating in our company.

FEP heat-shrinkable tubing

Shrinkage ratio of 1.3:1

Type

Expanded I.D. (mm)

Shrunk I.D.(mm)

Wall thickness after max. Shrinkage (mm)

Tol. Wall thickness (+/-mm)

Rec. Object Diameter (mm)

Item No.

FS 24 0,78 0,68 0,20 0,05 0,70-075 33120078006801
FS 22 0,91 0,81 0,20 0,05 0,83-0,89 33120091008101
FS 20 1,14 0,99 0,20 0,05 1,01-1,12 33120114009901
FS 18 1,52 1,24 0,20 0,05 1,26-1,50 33120152012401
FS 16 1,90 1,55 0,23 0,05 1,58-1,88 33120190015501
FS 14 2,34 1,83 0,23 0,05 1,85-2,30 33120234018301
FS 12 2,92 2,26 0,23 0,05 2,30-2,90 33120292022601
FS 10 3,58 2,90 0,25 0,08 2,92-3,55 33120358029001
FS 9 4,00 3,15 0,25 0,08 3,20-3,95 33120400031501
FS 8 4,57 3,63 0,25 0,08 3,60-4,52 33120457036301
FS 7 5,00 4,00 0,28 0,10 4,10-4,90 33120500040001
FS 6 5,70 4,57 0,28 0,10 4,65-5,60 33120570045701
FS 5 6,30 5,03 0,28 0,10 5,15-6,20 33120630050301
FS 4 7,36 5,75 0,28 0,10 5,85-7,20 33120736057501
FS 3 7,85 6,33 0,28 0,10 6,40-7,60 33120785063301
FS 2 9,30 7,12 0,30 0,10 7,30-9,10 33120930071201
FS 1 10,16 7,90 0,30 0,10 8,10-10,00 33121016079001
FS 0 11,17 8,87 0,30 0,10 9,00-11,00 33121117088701
FS 3/8 12,70 9,73 0,38 0,10 9,50-12,50 33121270097301
FS 7/16 14,70 11,38 0,50 0,10 11,60-14,50 33121470113801
FS ½ 16,93 12,95 0,50 0,10 12,20-16,70 33121693129501
FS 5/8 21,00 16,20 0,64 0,10 16,50-20,50 33122100162001
FS 3/4 25,40 19,40 0,75 0,10 19,60-25,00 33122540194001
FS 7/8 29,70 22,63 0,90 0,12 22,40-29,20 33122970226301
FS 1 33,78 25,90 0,90 0,12 26,30-33,40 33123378259001
FS 1 1/8 38,10 29,08 0,90 0,12 29,50-37,50 33123810290801