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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

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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.

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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.

How classified vascular interventional surgical robots?

vascular interventional surgical robots classified

The vascular interventional surgery robot is the eyes, hands and brain of the doctor. Vascular intervention is an operational technique that uses instruments such as puncture needles, guidewires, (medical PTFE ETCH TUBING FEP HS PEBAX manufactured by AOKERAY provides high quality thin-walled medical tubing for this purpose) catheters for diagnosis and treatment via vascular pathways under the guidance of medical imaging. The procedure of vascular intervention is mainly divided into: puncture, access establishment, imaging, balloon pre-dilation, stent release, and withdrawal of guidewire catheter. Currently, the vascular interventional surgery robot can assist in most of the procedure steps, except for the trivial operations such as puncture and replacement of guidewires and catheters.
According to the functional classification, vascular interventional surgical robots can be divided into two categories: those that assist physicians in performing vascular interventional electrophysiological examinations or treatments, and those that assist physicians in completing angioplasty. The former requires the use of special vascular interventional instruments and the manipulation of active marker catheters and electrode catheters under magnetic navigation, while various types of intracavitary operations such as balloon and stent pushing cannot be performed; the latter is compatible with conventional interventional instruments such as smaller diameter catheters and guidewires, and can perform most of the operations in vascular interventional procedures without customizing special instruments.

According to the classification of application procedures, vascular interventional robots are mainly divided into three categories: coronary intervention, neurointervention, and peripheral intervention (including aortic intervention). Globally, coronary intervention is the most mature, with a large number of PCI (percutaneous coronary intervention) procedures each year, so most vascular interventional surgery robot companies are the first to apply their robots to PCI procedures.

Which development China’s vascular interventional surgery robot products in the future?

Which development China’s vascular interventional surgery robot products in the future?

1, covering the whole process of vascular interventional surgery and breaking through the dilemma of homogenization of surgical robot products. Some companies focus on intravascular operations, and product homogenization is serious. Intravascular operation is the core part of PCI surgery, and the existing surgical robot products may only function for a few minutes in the surgery, and the preliminary work of puncture, imaging and diagnosis still depends on the personal experience and technology of doctors. In interventional surgery, the angiographic and diagnostic process takes up 70-80% of the entire surgery time. These tasks are trivial and more difficult to standardize, but they can affect subsequent disease diagnosis and treatment.

With the rapid development of Aokeray China’s thin-walled medical tube customization, it plays a key role in driving the development process of vascular interventional surgery robots in China.

In order to cover more surgical processes, the vascular interventional surgery robot has to solve the problem of compatibility with different product models, flexibility, aseptic operation, and complete the whole process of unpacking, switching catheter guidewires, and recovery. Meanwhile, with the development of vascular interventional surgery robotic products, catheters, guidewires and other consumables are also moving toward a stage of intelligence and multi-functional integration. A catheter can achieve multiple functions, avoiding replacement during surgery and saving resources while improving efficiency.

2、Applicable to coronary intervention, peripheral intervention and neurointervention in multiple procedures, the pan-vascular surgery robot saves hospital procurement costs. Due to the high cost and expensive start-up fee of the vascular interventional surgery robot, the ideal product should adopt modular design and can carry out coronary interventional surgery, neurointerventional surgery and peripheral interventional surgery at the same time. The pan-vascular interventional surgery robot is equipped with a multifunctional platform inside, and the operator can choose the corresponding technical module by himself. In this way, the hospital can save a purchase cost. The surgical robot can be used with most commercially available guidewires, stents and balloons, and is compatible with existing catheterization laboratories, eliminating the need for custom-made specialized medical devices, facilitating in-hospital use and strengthening hospitals’ willingness to purchase.

Vascular interventional diseases have commonality, mainly obstruction, stenosis, thrombosis, and reflux, and interventional devices mainly include catheters, guidewires, stents, and balloons. In coronary intervention, the vascular interventional surgery robot needs to meet better precision and flexibility; in neurointerventional surgery, the surgery robot needs to meet fast and sterile replacement of consumables in addition to achieving high precision; while in peripheral interventional surgery, the precision requirement is relatively not high due to the large peripheral blood vessels, and the requirement for image navigation technology is higher. At the same time, peripheral interventions are less difficult and can be treated locally in grassroots areas, thus requiring high requirements for robot automation and the pursuit of balanced and stable surgical quality, as well as the cooperation of multiple departments in hospitals.
3, semi-automated or even fully automated vascular interventional surgery robots are the final form to further improve surgical efficiency and relieve physician fatigue. The main information source of automated surgery is medical images and case data, and the core technology is deep learning and feedback, which is indispensable for image processing, high precision and high response speed. At present, the image segmentation and fusion technology and feedback mechanism are not yet mature, so companies can start with the automation module.

4, 5G remote accelerates the popularity of robotic surgery, which is a unique advantage of Chinese enterprises. “In addition to relying on 5G technology with large bandwidth and low latency, hospitals need to build a high-quality 5G intelligent ecology. 5G remote surgery safety and stability are crucial, and in addition to network transmission problems such as latency and lag, they also need to pay attention to Online system operation failure, third-party online attacks and other extraordinary circumstances.
In clinical applications, an important application scenario for 5G telesurgery is emergency surgery. At present, 5G telesurgery is still in the clinical trial stage, and the problem of responsibility attribution needs to be solved in order to be carried out in the clinical environment. 5G surgery involves a total of three main responsible parties: hospitals, surgical robot companies, and network providers, and it is difficult to judge responsibility attribution if there are unconventional situations other than network delays and robot failures.

5, lightweight, miniaturization is conducive to reducing robot costs and improving accessibility. In addition to the original robot products by changing the design, materials to achieve lightweight, miniaturization, disposable vascular interventional surgery robot is another idea. The emergence of disposable robots may also change the high-end positioning of surgical robots with their high price and high maintenance costs.

The future of vascular interventional surgery robots can be systematic or specialized. The vascular interventional surgery robot products are in the exploration stage, and the above-mentioned technical directions can be developed simultaneously and are not completely isolated. The vascular interventional surgery robot market is blossoming, and there is no standardized path to break through from segmentation, improve the accuracy and standardization of operations such as imaging and guidewire catheter pushing, and deal with complex lesions such as calcified lesions and chronic complete occlusion; or to build a pan-vascular surgery robot and integrate more high-end performance from the product as a whole

What features of PTFE peelable tubing sheaths and peelable heat shrink tubing FEP

Ptfe peelable tubing sheath: High temperature 300°C. Continuous use temperature 260°C. Continuous use temperature 260°C. P Very low coefficient of friction and good abrasion resistance and excellent chemical stability. Ptfe peelable sheathing Characteristics. No special techniques are required for removal, which can significantly reduce the working time. No need to use a razor during removal, […]

PTFE Peelable Tubing for Sheaths

Aokeray make polytetrafluoroethylene PTFE peelable tubing sheaths suited for use as cannulas and other medical introducer devices.The PTFE peelable tubing sheath facilitates easy and non-invasive removal of the sheath after insertion of the assistive medical device.

PTFE peelable tubing sheaths Thin-walled, Having some degree of flexibility .Aokeray PTFE peelable tubing Custom size ID0.039″ TO ID0.314″ (1mm to 8mm)wall 0.0078″ to 0.0016″Tolerance +- .0.0004″,Color custom .


The PTFE peelable tubing sheath is partly characterized by being easily split along its length (longitudinal) without the use of any type of mechanical scraping, scoring lines, etc.

What features of PTFE peelable tubing sheaths and peelable heat shrink tubing FEP ?

Medical Etched PTFE Liner Test Packag Storage

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etching PTFE liner tubing

PTFE is a non-stick material that is resistant to high temperatures and corrosion and is very smooth, and is widely used in military medical food, etc . However, when it needs to be bonded to the surface of another material, or in order to bond standard PTFE to another surface while combining the advantages of […]

Polyurethane TPU flexible tubing Features

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Ptfe tubing flexible Features 

1, high chemical stability: can withstand all strong acids, including aqua regia, hydrofluoric acid, concentrated hydrochloric acid, nitric acid, fuming sulfuric acid, organic acids, etc., strong bases, strong oxidizing agents, reducing agents and a variety of organic solvents. ptfe tubing flexible is very suitable for high-purity chemical feeding material use.  2, low coefficient of friction: […]