September 2018 – Teflon Adhesive Tape

Installation precautions and applications of Teflon mesh belt

Teflon mesh belt alias: Teflon mesh belt, Teflon mesh conveyor belt, drying mesh belt, drying room mesh belt, PTFE anti-sticking high temperature resistant mesh belt. Teflon mesh belt specifications: mesh: 0.5-10 mm square (4X4 mm, 1X1 mm, etc.).

Teflon mesh belts are used in a wide range of applications. Dryer mesh belt, sterilizer mesh belt, annealing furnace mesh belt, fryer mesh belt, sintering furnace mesh belt, instant noodle steamer mesh belt, etc. which are all common application fields of Teflon mesh belt. The main applications are as follows:

A: Textile, printing and dyeing: printing drying, bleaching and dyeing cloth drying, fabric shrinking drying, non-woven drying, etc. drying tunnel, drying room conveyor belt.

B: Silk screen, printing: loose dryer, offset printing machine, UV series light curing machine, paper oil drying, ultraviolet drying, plastic products silk screen drying and other drying tunnels, drying room conveyor belt.

C: Other items: high-frequency drying, microwave drying, various food freezing and thawing, baking, heat shrinkage of packaged articles, drying of general moisture-containing articles, rapid drying of flux-type inks, etc. Teflon mesh conveyor belts are suitable for where hot air flow applications and hot processing conditions are required.

Teflon mesh belt installation precautions:

1. Before installing the Teflon mesh belt, check the machine to see if the machine running roller is flexible. If there are sharp objects inside or inside the machine, make sure that the mesh belt is not damaged or scratched during installation.

2. When installing the mesh belt, it is better to have two or more people to cooperate. You can also use the roll holder to pull up the mesh belt to prevent the mesh belt from being bent and injured.

3. When the mesh belt is inserted into the pin, the mesh belt is aligned on both sides and then worn to ensure that the joints are flat on both sides. The two ends of the pin need to be folded 180° to ensure that the joint and the bolt do not slip. Remarks: If you have a guide pin, after inserting it, please cut the wire part, the other is the same as above.

4. After the pin is inserted, check the safety condition and correct the manual or automatic correction to ensure that it is correct.

5. Then slowly tighten the mesh belt, and adjust the two sides symmetrically. Note that the mesh belt should not be too tight, which can be normal. If there is an automatic correcting mechanism, first adjust the manual correction to ensure that the automatic correcting mechanism is turned on after the mesh belt is in normal operation, so as to avoid the mesh belt being injured.

6. After the belt is installed and adjusted, run at room temperature for 15 minutes, then raise the temperature to 150 °C for 30 minutes, then adjust the normal use temperature.

Safety precautions to be followed during operation of the Teflon mesh belt

Teflon mesh belts are used in a wide range of applications. The belts can be applied to dryer mesh belt, sterilizer mesh belt, annealing furnace mesh belt, fryer mesh belt, sintering furnace mesh belt, instant noodle steamer mesh belt, etc., which are common application fields of Teflon mesh belts. So what are the safety regulations that should be observed during the use of Teflon mesh belts?

1. The Teflon mesh belt can be placed in the oven after all preparations are ready. A red light indicates that the box is heated. When the temperature reaches the controlled temperature, the red light turns off and the green light is on, and the temperature is started. In order to prevent temperature control failure, you must also look after it.

2. When placing the sample, it should be noted that the arrangement should not be too dense. The test piece should not be placed on the heat sink to avoid affecting the upward flow of hot air. It is forbidden to bake flammable, explosive, volatile and corrosive items.

3. When it is necessary to observe the Teflon mesh belt sample in the working room, the outer door can be opened and observed through the glass door. However, it is better to open the door as little as possible to avoid affecting the constant temperature. Especially when working above 200 °C, opening the door may cause the glass door to quench and rupture.

4. In a blasted oven, the blower must be turned on during heating and constant temperature, otherwise it will affect the uniformity of the temperature of the working chamber and damage the heating element.

5. It should be placed indoors in a dry and level place to prevent vibration and corrosion.

6. When using the microwave conveyor belt, pay attention to the safe power supply, according to the power consumption of the oven power consumption device with sufficient capacity. Use enough power leads and have a good grounding wire.

7. Teflon mesh belt oven with electric contact mercury thermometer type thermostat should connect the two wires of the electric contact thermometer to the two terminals on the top of the box. In addition, an ordinary mercury thermometer is inserted into the exhaust valve. The thermometer in the exhaust valve is used to check the electrical contact mercury thermometer and the opening of the exhaust valve for observing the actual temperature in the tank. Adjust the electric contact mercury thermometer to the required temperature and tighten the screws on the steel cap to achieve the purpose of constant temperature. However, be careful not to screw the indicator iron out of the scale.

8. When using, the temperature should not exceed the maximum operating temperature of the oven.

9. To prevent burns, use special tools when handling samples.

10. After the Teflon mesh belt is finished, the power should be cut off in time to ensure safety.

PTFE (teflon) adhesive tape

What is PTFE teflon adhesive tape.

PTFE (Teflon) adhesive tape: fiberglass is the base fabric, which is coated with PTFE (Teflon) emulsion and dried to PTFE (Teflon) coated glass fiber cloth; PTFE (Teflon) glass fiber cloth coated with silicone adhesive to PTFE (Teflon)adhesive tape.

PTFE (teflon) adhesive tape is high performance, new composite product. The surface is smooth, with good anti-stick, chemical, high temperature resistance and excellent insulation properties.

The application of PTFE (teflon) adhesive tape

Cladding of various high temperature drums, heating flat plates, stripping workpieces; heat sealing of food, medicine and plastic bags.
The cladding of runners, hoppers, aviation molds and other gaskets can also be applied to the sizing machine drum, thermoplastic demoulding and other industries, it’s reusable and easy to replace.
It is suitable for other surface treatment that requires anti-stick, corrosion and high temperature resistance. Be used in packaging, thermoplastic, composite, sealing and sealing, electrical and electronic industries, etc., where it needs to be adhered to heat-resistant and corrosion-resistant insulation, which can be pasted repeatedly.

The strength of PTFE (Teflon) adhesive tape is high and can be applied to the sizing machine drum, thermoplastic demoulding and other industries, and can be used repeatedly and easily replaced.
It can be directly pasted to various large flat surfaces and regular curved surfaces (such as drums). Without the limit of specialized equipment of spraying PTFE materials, special processes and without the transporttion of professional spray factory for processing. PTFE (Teflon) adhesive tape is excellent option, and the long term working temprature is up to 260℃.

The features of PTFE (Teflon) adhesive tape

1. Good thermal performance (continuous working temperature is above 260℃), the peak temperature can reach 300℃. The tape can be safely used even on overheated heaters;

2. Good adhesion, the slag of the melted packaging film will not stick to the heater.

3. Excellent electric insulativity.

Good stability, durability.

Application of PTFE (Teflon) adhesive tape

1. Heat sealing/cutting machine of food and medicine plastic packaging industry, and high speed heat sealing machine.

2. Anti-adhesive treatment on the surface of drying drums; anti-adhesive treatment on the surface of the laminating machine; anti-adhesive treatment on the surface of the drying drums.

3. Application of anti-adhesive, friction reducing.

The properties of PTFE (Teflon) adhesive tape

1. Weather, anti-aging resistance between low temperature -196℃ and high temperature 300℃.
For example, if it is placed at a high temperature of 250℃ for 200 days, the strength and the weight won’t be reduced. Be placed at 350℃ for 120 hours, the weight will only decrease by about 0.6%; Maintain the original softness at -180℃.

2. Non-stick: The surface is smooth and it is not easy to adhere to any substance. Easy to clean; all adhesive substances, such as paste, resin, paint, etc. can be easily removed.

3. Chemically resistant, which can resistant strong acids, alkalis, aqua regia and various organic solvent.

4. Medicament resistance and non-toxic. Resistant all pharmaceutical items.

5. High insulation performance (permittivity: 2.6, tangent below 0.0025), UV protection, anti-static.

6. Fire retardant.

7. Easy to use and long service life.

Advantages of the Teflon series products produced by Shenzhen Core-Tex

After the product has been coated with Teflon, the product will have the following characteristics:

1. Teflon coating with non-stick: Almost all materials do not adhere to the Teflon coating. Very thin films also show good non-stick properties.

2. Teflon coating with heat resistance: The Teflon coating has excellent heat resistance and low temperature resistance. It can withstand high temperature to 300 °C in a short time, and can be used continuously between 240 °C and 260 °C. It has remarkable thermal stability, it can work at freezing temperature without embrittlement, and does not melt at high temperatures.

3. Teflon coating with sliding resistance: Teflon coating has a lower coefficient of friction. The friction coefficient changes when the load slides, but the value is only between 0.05 and 0.15.

4. Teflon coating with moisture resistance: The surface of the Teflon coating is not water or oily, and it is not easy to get into the solution during production. If there is a small amount of dirt stuck, it can be removed by simple wiping. Short downtime, saving time and increasing productivity.

5. Teflon coating with wear resistance: The product has excellent wear resistance under high load. Under certain load, it has the dual advantages of wear resistance and non-sticking.

6. Teflon coating with corrosion resistance: Teflon is almost immune to drug erosion, it protects parts from any kind of chemical corrosion.

Analysis of main components of non-stick coatings in the production of Teflon

The basic film-forming materials for non-stick coatings in the production of Teflon are fluororesins and binders. The choice of fluororesin plays a crucial role in the non-stick properties of Teflon spray non-stick coatings.

There are many types of fluororesin sprayed on Teflon, among many fluororesins, polytetrafluoroethylene (PTFE) has the lowest friction coefficient, so PTFE is the preferred fluororesin for non-stick coatings. For better coating properties or ease of construction, Generally, a resin such as tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA) or tetrafluoroethylene-hexafluoropropylene copolymer (FEP) is added on the basis of PTFE. Therefore, the fluororesin for non-stick coatings is generally a PTFE-based Teflon mixture.

Teflon PTFE has a regular structure, high crystallinity, and is almost insoluble in any solvent under normal temperature conditions; and the melting temperature is high, the melt viscosity is large, the fluidity of the coating is not good, which directly affects the non-stickiness of the Teflon-coated non-stick coating. For the above reasons, the fluororesin used in general non-stick coatings is a mixture of PTFE and other fluororesins, such as FEP, PFA, and the like. Compared with PTFE, FEP has the advantages of better melt flow and lower crystallinity, which results in a lower porosity of the formed coating, which is especially suitable for the hot and humid environment of baked food factories. PFA is very close to the chemical and thermal stability of PTFE, but PFA has higher toughness than PTFE and improves the wear resistance of the coating. The addition of PFA prevents the formation of large crystalline areas on the surface of the coating film.

Usually, adding more than 40% by weight of PFA has a significant effect. However, the miscibility of PTFE and FEP is limited, and a crystallization zone is formed in a portion where each polymer is separated, and a coating film defect sometimes occurs. Large pores and coating film defects are not allowed in a coating for preventing the substrate from being permeable to water or gas. These defects are to a large extent related to the composition of the fluoropolymer and may also be related to other ingredients in the coating formulation. The method and conditions of using the coating are also important in controlling the structure of the coating (such as cooling rate). The addition of copolymers such as FEP and PFA contributes to the formation of a coating having a lower degree of amorphousness than pure PTFE due to its low crystallinity. Therefore, the mixing of PTFE with FEP or PFA in Teflon non-stick coatings can improve the impermeability of the coating and prevent the formation of defects such as bubbles or corrosion

Can the PTFE series be recycled ? Safe recycling method for PTFE

PTFE, Whose scientific name is PTFE, which is a high-performance material with heat resistance, chemical inertness, insulation stability and low friction. It is widely used as a frying pan coating, breathable sportswear materials, and electronic product insulators. There is no effective method for recycling, also recycling for this material, the conventional combustion treatment method not only easily damages the combustion equipment but also generates highly polluting gas.

The University of Bayreuth in Germany published a communique in 2015 saying that the school’s material processing scientists worked with the business community to develop a cost-effective and pollution-free method for recycling Teflon materials. This achievement will help solve the problem of Teflon waste disposal.

German researchers first decomposed this material into smaller molecules and used microwaves as a heating source to generate pyrolysis, resulting in a recovery of 93%. According to the researchers, another feature of the method is that it does not produce harmful by-products during the process and ensures safe recycling of Teflon.

According to the researchers, they will establish a small experimental plant in the next step to verify the industrial feasibility of this method.

Performance and application of Teflon series products

PTFE is widely used as Corrosive materials, insulating materials, anti-stick coatings materials in industries such as atomic energy, national defense, aerospace, electronics, electrical, chemical, machinery, instrumentation, instrumentation, construction, textile, metal surface treatment, pharmaceutical, medical, food, metallurgical smelting, etc. , which has been treated as an irreplaceable product.

Teflon coatings have excellent comprehensive properties and can be used as engineering plastics for PTFE tubes, rods, strips, plates, films, etc.

Generally it is used with high performance requirements in corrosion-resistant pipes, containers, pumps, valves, and radar, high-frequency communication equipment, radio equipment, etc. .

Adding any filler in PTFE that can withstand the sintering temperature which can greatly improve its mechanical properties.

At the same time, it can maintain other excellent properties of PTFE.

Filled varieties materials include glass fiber, metal, metal oxide, graphite, molybdenum disulfide, carbon fiber, polyimide, EKONOL, etc. The wear resistance and ultimate PV value can be increased for more than 1000 times.

Painting on the surface of the bullet warhead can increase the penetrability of the bullet, allowing the bullet to shoot through the bulletproof vest.