FEP tubing and ptfe liner comparison of regarding adhesion

A, FEP tubing hot melt bonding can not?FEP chemicals: Tetrafluoroethylene-hexafluoropropylene copolymer or Fluororesin-46, abbreviation: FEP or F46 . F46 (FEP) is a copolymer of tetrafluoroethylene and hexafluoropropylene, which has good thermal stability, outstanding chemical inertness, excellent electrical insulation and low coefficient of friction, and can be processed by thermoplastic processing methods.F46 resin has similar properties to polytetrafluoroethylene, but also has good processing properties of thermoplastics.
The molecular structure of FEP, like PTFE, is also a fully fluorinated structure, the difference being that part of the fluorine atom of the F46 main chain is replaced by trifluoromethyl (-CF3).
Chemically: It is stable to almost all chemicals and solvents.
Thermally: PTFE, PFA continuous use temperature is 260 degrees, FEP continuous use temperature is 200 degrees
Mechanically: Minimal coefficient of friction and sealability
Electrical: Insulator with small dielectric constant and dielectric loss factor
Others: non-adhesive, weathering, flame-retardant, low temperature resistance
Invention process: PTFE -> FEP -> PFA
Hot fusion is generally used as a hot melt connection. The principle of hot fusion connection is to heat the flat end surfaces of two FEP tubing by pressing the mating surfaces against a heating tool until they are molten, and after removing the heating tool, the two molten end surfaces are pressed together and held under pressure until the joint cools, making the two sections of tubing connected into a single operation.
Note: FEP can only be made of FEP material and FEP hot fusion, same sex fusion, opposite sex repulsion .
FEP has similar characteristics to PTFE, but also has the good processing performance of thermoplastic. Thus, it makes up for the processing difficulties of PTFE, making it a material that replaces PTFE. It is widely used in wire and cable production for transmission wires of electronic equipment used at high temperatures and high frequencies, connection wires inside electronic computers, wires for the aviation universe and its special purpose installation wires, oil pump cables and insulation layers for winding wires of submerged oil motors.
Its main applications are for making inner villages of tubes and chemical equipment, the surface layer of drums and various wires and cables, such as aircraft hook-up lines, booster cables, alarm cables, flat cables and oil well logging cables. fep film has been seen used as a thin coating for solar collectors. It is mainly used in communication cables, electric wires, semiconductors, chemical anti-corrosion, medical materials, automobiles, industrial coatings and other fields.

Also can be used as corrosive liquid and gas transport tube, lining tube, tube for heat exchanger and liquid level meter. Also can be used as wire, cable and electrical components used in various frequencies

Teflon is commonly known as polytetrafluoroethylene (abbreviated as Teflon or [PTFE, F4]), which is also known as “Teflon”, , “Teflon”, “Teflon” and “Teflon”, “Teflon” and so on. It is a polymer compound made of tetrafluoroethylene by polymerization.
The color of polytetrafluoroethylene is milky white, and it can be produced in color, but the defect is that it cannot be made transparent. The alternatives to transparent are polyvinylidene fluoride (ptfe) and fep (soluble polyvinylidene fluoride). Teflon is a hose with a Shore hardness of D55.
Polytetrafluoroethylene tube is the use of high-quality plunger worker extrusion tube, using a special processing technology, so that the steel and plastic tube closely combined, can withstand positive pressure 1.6Mpa, negative pressure: 77Kpa; can be used normally within -60 ℃ ~ +260 ℃, with reliable and excellent corrosion resistance, conveying strong corrosive gas and liquid at high temperatures.
Polytetrafluoroethylene (PTFE) has excellent chemical stability, can resist all strong acids, strong alkalis, strong oxidants, and a variety of organic solvents do not occur. PTFE use a wide range of temperature, atmospheric pressure can be used for a long time -180 ℃ ~ 250 ℃, after processing at 250 ℃ high temperature 1000h, its mechanical properties change very little. PTFE has a very low friction factor, is a Its static friction coefficient is smaller than the dynamic friction coefficient, so it is used to make bearings with the advantages of low starting resistance and smooth running. Because PTFE is non-polar, heat-resistant and non-absorbent, it is an excellent electrical insulation material. It also has excellent aging resistance, non-stick and non-combustibility.
PTFE rods, tubes, films, bearings, gaskets, valves and other profiles and parts are widely used in machinery, chemicals, aviation, electrical and electronic, national defense industry, cutting-edge science and technology, medical and health care and electrical insulation and other fields.

FEP Heat Shrink tubing medical grade

Aokeray has been one of the best FEP Heat Shrink tubing manufacturers and suppliers in China since 2009. As the only FDA approved manufacturer and ISO13485 certified FEP Heat Shrink tubing medical grade factory in China for over 13 years.

Aokeray offers FEP Heat Shrink tubing medical grade with heat shrink ratio of 1.3:1, 1.6:1, 1.7:1, 2: FEP HS tubing Exp ID 0.035″ up , Rec ID 0.59″ down ,wall thickness 0.001″ to 0.01″ Customize any thin-walled FEP hs tubing in these heat shrinkage ratio ranges. We can also provide customized PTFE tubing, PTFE etch liner and PEBAX tubing and PTFE Peelable Sheaths tubing service according to your requirements. Please contact us for more information or to request a complete product assortment


All you need to know about FEP Heat Shrink tubing medical grade

FEP full name Fluorinated ethylene propylene FEP FEP abbreviation, FEP crystalline melting point of 304 ℃, the density of 2.15g/CC . FEP can be applied to soft plastics, its tensile strength, wear resistance, creep resistance is lower than many engineering plastics . Teflon FEP heat shrink tubing has outstanding wear resistance, chemical resistance and high-temperature performance, especially for high-temperature performance of the occasion, used to connect the welding seam at the insulation protection and pressure lifting and covered components to distinguish the identification and corrosion-resistant .

This article discusses what makes FEP Heat Shrink medical tubing . We will guide you through FEP Heat Shrink tubing market medical grade application specifications, various types, advantages and disadvantages, and what to consider when purchasing.

fep heat shrink tubing Exp wall
fep heat shrink tubing coat PEBAX

What are the uses of FEP heat shrink tubing medical grade?

FEP Medical Tubing Applications

  • Insulin delivery tubes
  • Intravenous catheters
  • Epidural catheters
  • Urology catheter lines
  • Vascular access dilators, sheaths, and introducers
  • FEP Heat Shrink, used in the FLASH Catheter

FEP HS tubing is useful in medical solutions because of the solubility and ductility of the FEP material, which allows for the production of various forms of fluoroplastic tubing, and the high transparency of FEP tubing, which allows for the observation of internal fluid transport.

How does FEP HS tubing work ?

FEP Heat Shrink tubing medical grade, it is mainly used for interventional medical instruments. The larger the shrinkage ratio of FEP Heat Shrink tubing, the stronger the cladding effect. Currently, Aokeray produces FEP Heat Shrink tubing medical grade that is peelable and non-tearable, but we have specific tools that allow the FEP Heat Shrink tubing to be torn off directly. We also make custom PTFE Peelable -tearable Sheaths tubing on request.


Why choose FEP Heat Shrink tubing ?

Teflon FEP heat shrinkable tube has outstanding smooth wear resistance, chemical resistance and high temperature performance, especially for high temperature corrosion resistance acid and alkali environment, heat shrinkable tube can work at -200 – 200 ℃, corrosion resistance only high temperature element fluorine, alkali metal and it plays a role, all other concentrated, dilute inorganic organic acids, alkalis, esters are not useful, so for human interventional surgical instruments medical tube is very suitable.

Purchasing and selecting FEP Heat Shrink tubing medical grade ?

Considerations when purchasing FEP heat shrink ratio, wall thickness before and after shrink, production lead time and problems encountered in use are some of the factors that interventional medical device engineers often consider to determine and adjust specifications immediately.

As with many tubing components, the larger the heat shrink ratio, when the FEP hs tubing rheology, the tighter it will be wrapped, there will be no air bubbles, inflammation after the patient surgery, etc.. So the general selection of shrink ratio is 1.6 : 1 is the most cost-effective, because the selection of 2 : 1 production difficulties, low yield and higher costs; if you choose 1.3 : 1, it is possible that the wrapping is not comprehensive, shrinkage can not be, will bring the sequelae of subsequent medicine.

Aokeray has customized FEP Heat Shrink tubing medical grade for more than 500 customers in China and internationally with more than 1,000 specifications and products. Aokeray will provide you with proven solutions based on your experience in troubleshooting and solving sample assembly problems.

What is the difference between FEP heat-shrinkable tubing and PTFE heat-shrinkable tubing?

A temperature: FEP heat shrinkable tube temperature resistance of 200 degrees Celsius, heat shrinkage temperature in 90-150 degrees. PTFE heat shrinkable tube temperature resistance of 260 degrees, heat shrinkage temperature in 350 degrees or more.

A temperature: FEP heat shrinkable tube temperature resistance of 200 degrees Celsius, heat shrinkage temperature in 90-150 degrees. PTFE heat shrinkable tube temperature resistance of 260 degrees, heat shrinkage temperature in 350 degrees or more

Specifications: FEP heat shrink tubing,FEP;HS Exp ID 0.035” up , Rec ID 0.59″ down ,wall thickness 0.001“ to 0.01

PTFE heat shrink tubing,ID0.023” TO 0.04” wall thickness 0.00314” to 0.0082”.It is clear that FEP heat shrink tubing spans a wide range

Heat shrink ratio. Aokeray FEP heat shrink tubing is usually 1.6:1; 1.7:1; 1.3:1; 2:1 for medical grade and 1.7:1 for PTFE, as the market is more mature, aokeray 1.7:1; 4:1 。

What are FEP heat shrinkage tubing ratio types?

1.3:1, 1.6:1, 1.7:1, 2.0:1, 1.6:1 is the most cost-effective for interventional medical devices.