High Temperature Teflon Tape Is Applied To The Pulp Drum

Many mortar rollers use Teflon spray processing for convenient use, which can reduce friction and make winding more convenient. But when using, the Teflon spray coating on the drum will wear out, causing abnormal production. If the cost of the scrap roller is too great, and the repair roller is sprayed again, the cost is not low, and the operation is very troublesome.

High Temperature Teflon Adhesive Tape

Now, Teflon tape with release paper can be used instead of Teflon spraying, and Teflon tape can be pasted on the pulp drum, and the effect of Bitter Flon spraying is better.

Compared with traditional spray rollers, the use of Teflon tape is convenient, low technical requirements, and durable.

However, in order to make the service life of the Teflon tape sticking roller longer, pay attention to the following technical points:

  • Clean the surface of the yarn pulp drum that needs to be pasted with Teflon tape. The cleaning agent is best to use alcohol and wipe with cotton sliver. The yarn sizing drum must have a smooth surface, no iron filings, and no other impurities, so that the Teflon tape can better stick to the drum.
  • When the rollers are pasted with Teflon tape, they need to be partially overlapped. Use scissors to cut out the Teflon tape that is about 5CM longer than the required length, and take the cut Teflon tape to the side of the roller to be pasted.
  • Take the Teflon tape to the roller, slowly tear off the yellow release paper, and at the same time, attach the exposed part of the rubber surface to the roller, tear off the tape while attaching it. You can use cloth or newspaper during the attaching process The soft objects are rubbed and flattened at the roller where the Teflon tape has been applied. After the application is completed, make sure that the two sides of the Teflon tape overlap
  • After attaching the Teflon tape, carefully check whether there are small bubbles between the tape and the drying cylinder. If so, you can use a pin or other sharp object to remove the small bubbles one by one and flatten them.

Contact us by infocorefrp@gmail.com to get free samples of high temperature Teflon adhesive.

Application of PTFE (Teflon) high temperature cloth (PTFE high temperature cloth as release cloth)

PTFE (Teflon) high temperature cloth is a high-performance, multi-purpose composite material new product which is made of polytetrafluoroethylene emulsion and impregnated with high-performance glass fiber cloth.

Application of PTFE (Teflon) high temperature cloth

PTFE (Teflon) high temperature cloth is commonly known as release cloth in the demoulding industry, and its characteristics of high anti-sticking, high temperature resistance, low friction and anti-corrosion. The release cloth has the following advantages:

1. The mold release is complete, the product qualification rate is highly improved, the scrap rate is greatly reduced, and the cost is saved.

2.The surface is uniform, flat, high gloss, so that the appearance of the mold is very grade.

3. No environmental pollution, saving cost, avoiding the rubber vulcanization and bonding.

4. No rubber particles remain on the surface of the mold, so cleaning process is not required, thus shortening the demolding process, improving production efficiency, reducing losses, and reducing production costs.

5. Durable (5,000 times).

The main thickness: 0.11mm、0.13mm、0.18mm.

The main color: brown, white and black.

Main performance characteristics:

1.Temperature resistance: up to 260℃. After 200 days at 250℃, the strength and weight of the belt are kept the same

2.Non stick: not easy to stick any substance. It is easy to clean, all adhesive substances such as paste, resin, paint, etc. can be easily removed.

3. Chemically resistance: resistant to strong acids, alkalis, aqua regia and various organic solvents.

4.Low friction coefficient (0.05-0.1).

5.The light transmittance is 6-13%.

6.With high insulation properties, the dielectric constant is 2.6

7.Good dimensional stability (extension coefficient less than 5‰) and high strength.

8. Non-toxic.

9.Fire retardant.

What is the special use of Teflon high temperature cloth as breathable cloth?

tom of the pan is a non-stick pan, coated on the equipment is the anti-fouling surface, coated on the cloth is oil-proof, dust-proof cloth.
In addition to being waterproof, breathable, dirt-resistant and anti-aging, PTFE (Teflon) fabrics have the advantages of low shrinkage, corrosion resistance.

What is the special use of Teflon high temperature cloth as breathable cloth?

PTFE (Teflon) breathable cloth is made of high quality glass fiber, which is weaved into high-grade fiberglass cloth. The PTFE (Teflon) high temperature resistant varnish of various thicknesses is produced by using unique process technology, fully immersing, dipping and coating PTFE resin. The thickness of the breathable cloth is generally 0.21 mm, 0.28 mm, 0.105 mm, 0.07 mm, and 1.05 mm. The normal width is 1 meter, and the special width can be customized.

Breathable cloth is one of the PTFE (Teflon) high-temperature cloth, we have developed a new type of breathable cloth, which has smooth surface, good integrity and uniform air permeability.

Teflon breathable cloth is mainly used for pneumatic conveying chutes of cement, alumina and other powder materials. It is also suitable for pneumatic conveying devices of other powder and granular materials, such as trains and automobile bulk powder tankers. The pneumatic conveying device has been widely used in metallurgy, building materials, chemical industry, power plant, food and transportation industry, and have achieved good results, and instead of the traditional belt conveying and screw conveying. Since the material is in a gasification state during transportation, it has good fluidity, the equipment is not damaged by friction, and the maintenance amount of the equipment is reduced. The material is transported in a closed chute, there is no flying loss, the environment is not polluted.

How to classify Teflon tape according to the degree of high temperature resistance?

Specifically, if the working environment is just up to about 100℃ and the company does not pay much attention to the quality and service life to Teflon tape, the choice of Teflon tape that temperature resistance reaches 260℃ is a waste.

How to classify Teflon tape according to the degree of high temperature resistance?

If the working environment requires that its temperature resistance is up to 180-260℃, then you must choose the 260℃ Teflon tape.

Therefore, domestic customers are generally divided into above two types except the customers who uses imported rape. Most customers, especially end-use customers, will choose the 260℃ Teflon tape taking into account the degree of temperature resistance and service life, so this kind Teflon tape is more popular in the market.

Teflon coating is a unique high-performance coating that combines heat resistance, chemical inertia, excellent insulation stability and low friction, which has the combined advantages that other coatings cannot compete with, and the flexibility it applies allows it to be used in almost all shapes and sizes of products.

Teflon is divided into several basic types as PTFE, FEP, PFA, ETFE.

1, Teflon PTFE: non-stick PTFE (polytetrafluoroethylene) coating can be used continuously in 260 ℃, with a 290-300 ℃maximum temperature, very low friction coefficient, good wear resistance and chemical stability.

2, Teflon FEP: non-stick FEP (ethylene fluoride propylene copolymer) coating melts and forms porous film in baking. It has excellent chemical stability and non-stick characteristics, and the maximum operating temperature is 200℃.

3, Teflon PFA: non-stick PFA (over fluorine alkylation) coating melts and forms porous film in baking. The advantage of PFA is that it has a higher continuous temperature ( 260℃) and stronger toughness, which especially suitable for the high temperature conditions of anti-adhesion and chemical resistance.

4, The Teflon ETFE: ETFE is a copolymer of ethylene and tetrafluoroethylene. That is the toughest fluorine polymer that can form a highly durable coating with excellent chemical resistance, and it can continuous operate at 150 ℃.

After Teflon coating, it has the following characteristics:
1 Non-adhesion: almost all substances are not bonded with Teflon coating even if the coating is very thin membrane.
2 Heat Resistance: Teflon coating has excellent high and low temperature resistance characteristics. It can withstand high temperature to 300 ℃ in short time. And it can be used continuously between 240℃~260℃ with significant thermal stability. What’s more, it will not embrittle at freezing temperature, and will not melt in the high temperature.
3 Sliding: Teflon coating has a low friction coefficient. The friction coefficient changes when the load is sliding, and the coefficient is 0.05-0.15.
4 Moisture Resistance: Teflon coating surface does can keep free from water, oil and solution when operating. If it is sticky a small amount of dirt, simple wipe can removed it. Short downtime can save working hours and increases productivity.
5 Wear Resistance: Teflon coating has excellent wear resistance under high load. And, it has the dual advantages of wear resistance and non-adhesion under a certain load.
6 Corrosion Resistance: Teflon is almost immune from drug erosion, so that it can protect parts from any kind of chemical corrosion.

Installation precautions and applications of Teflon mesh belt

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.

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

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.

How can Teflon tape be safely stored and how to use it?

How to store, transport and use Teflon tape, Teflon adhesive tape, PTFE tape, pure Teflon tape and other tapes during daily use and transportation?

1. Teflon tape should be stored in the warehouse to avoid sun and rain. It is forbidden to contact with the organic solvent of acid and alkali oil, keep it clean and dry at the room temperature (-15℃ to 40℃)away from the device.

2. Teflon tape should be placed in rolls without folding. It should be flipped once a quarter.

3. Use the crane to load and discharge the conveyor belt, and use the rigging with the beam to hoist to avoid the damage of the belt edge. Do not load and discharge arbitrarily.

4. The type and specification of Teflon tape should be reasonably chose with the needs.

5. Do not connect (match) tapes of different varieties, different specifications, strength, and layers of fabrics.

6. Teflon conveyor belt joints are preferably hot vulcanized to improve reliability and maintain high effective strength.

7. The diameter of the conveyor roller and the diameter of the smaller conveyor pulley should comply with the relevant regulations.

8. Don’t let the tape serpentuate, keep the roller, the vertical roller is flexible, and the tensionshould be moderate.

9. Avoid wear of the tape in case of the conveyor is equipped with baffle and cleaning device.

10. Cleanliness is the basic condition for the good operation of the tape. Extraneous substances can affect the belt eccentricity, tension, and even breakage.

11. If there is damage during using the Teflon tape, find the cause and repair in time to avoid the occurrence of adverse consequences.

Related terms in this article

Tape

Richard Gurley Drew applied in the United Kingdom and the United States that he developed a very light, pressure-matching adhesive, it was not sticky enough at the beginning, so Drew was told: “Get this tape back to your Scottish boss and ask them to put more adhesive!” (“Scotland” means “stingy”. But during the Great Depression, people had found hundreds of uses for this type of tape.

Why the Teflon conveyor belt is deflected?

Teflon conveyor belt is one of the key equipment for belt conveyors, So whether it can run smoothly is related to the operation of the entire conveyor.

Once the Teflon conveyor belt is deflected, it will accelerate the wear of the belt edge, shorten the service life, and seriously affect the production progress.

In addition to routine maintenance, installation accuracy is an important factor affecting the smooth operation of Teflon conveyor belts. Installation accuracy is mainly in conveyor belt and conveyor debugging of two aspects .

How do we judge which problem is caused by the deviation caused by the installation accuracy?

First, check whether the front and rear rollers of the conveyor are on the same center line and confirm whether they are parallel to each other;

Secondly, check whether the perimeter and diagonal of the two sides of the Teflon conveyor belt are equal.

When the Teflon conveyor belt is deflected to one side, the conveyor belt can be turned in the same direction. If the deviation is still to the original side, it is necessary to focus on checking the conveyor problem; if it is to the other side, it needs to pay attention to the situation of the Teflon conveyor belt.

Related terms in this article

Conveyor belt

Product structure: This product is made of multi-layer hanging cotton canvas as the skeleton, and the surface is covered with good rubber material and vulcanized. Conveyor belt series products include ordinary cotton canvas conveyor belt and nylon (NN) conveyor belt (divided into NN-100 type, NN-150 type, NN-200 type, NN-250 type, NN-300 type, NN-350 type, NN-400 type), polyester (EP) belt (divided into EP-100 type, EP-150 type, EP-200 type, EP-250 type, EP-300 type, EP-350 type, EP-400 type) , large dip angle (corrugated rib) conveyor belt, skirt partition conveyor belt, endless conveyor belt, pattern conveyor belt(as?delivery?and?distribution of materials?with different?angle?sizes, shapes?and?height?requirements?are also?different patterns). Commonly used pattern conveyor belts such as: chevron pattern conveyor belt (herringbone conveyor belt including upper convex, lower concave herringbone conveyor belt), figure-8 shaped pattern conveyor belt, fishbone pattern conveyor belt, U-shaped pattern conveyor belt, cylindrical Pattern conveyor belt, pitting pattern conveyor belt, grass pattern conveyor belt, or according to user requirements), water stop belt, PVC or PVG whole core flame retardant belt; and can provide a variety of special performance conveyor belt (general Flame-retardant conveyor belt, heat-resistant conveyor belt, burning-resistant conveyor belt, high wear-resistant conveyor belt, acid-resistant conveyor belt, alkali-resistant conveyor belt, cold-resistant conveyor belt, oil-resistant conveyor belt, high-temperature conveyor belt, high-strength conveyor belt and food Conveyor belt, Teflon conveyor belt, stainless steel conveyor belt, chain conveyor belt, conveyor belt).

Teflon

Teflon was discovered in 1938 by chemist Dr. Roy J. Plunkett at DuPont’s Jackson Laboratory in New Jersey, USA: When he tried to make new chlorofluorocarbon refrigerants Tetrafluoroethylene is polymerized in a high pressure storage vessel (iron on the inner wall of the vessel becomes a catalyst for polymerization). DuPont obtained its patent in 1941 and in 1944 registered its trademark under the name “Teflon”. Subsequently, DuPont developed a series of products in addition to Teflon? PTFE resin, including Teflon; AF (amorphous fluoropolymer), Teflon; FEP (fluorinated ethylene propylene resin), Teflon; FFR (fluorine polymerization) Foam resin), Teflon; NXT (fluoropolymer resin), Teflon; PFA (perfluoroalkoxy resin) and so on. In 1954, Colette, the wife of French engineer Marc Gregoire, had a whimsy. She thought that if the non-stick material “Teflon” that her husband used to apply on the fishing line which to prevent knotting could be used on the frying pan, the effect must be good. The “non-stick” that saved countless modern housewives was born.

Conveyor

According to the operation mode, the conveyor can be divided into: belt conveyor, screw conveyor, bucket elevator, roller conveyor, metering conveyor, chain conveyor, mesh belt conveyor and chain conveyor.

The Characteristics and Applications of Teflon High Temperature Cloth

What is the high temperature cloth? High temperature cloth was used PTFE emulsion as raw material, impregnated high-performance fiberglass cloth. And then it becomes high-performance, multi-purpose composite products, which also known as Teflon high temperature cloth and PTFE high temperature cloth.

The Characteristics of Teflon High Temperature Cloth

High temperature cloth can use in the environment that temperature is between -196 ℃ and 300 ℃,and it has the advantage of weather resistance and anti-aging. After practical application, not only its strength have not been lower, but also its weight have not reduced when the cloth has been placed for 200 days at 250 ℃; its weight only have reduced by about 0.6% when it has been placed for 120 hours at 350 ℃;It have not cracked at-180 ℃ and maintain its original softness.

Non-adhesiveness: It is not easy to adhere to any substance. Various stains are easy to be cleaned on the surface. almost all adhesives, like paste, resin and paint, can be easily removed; it is resistant to chemical corrosion, such as strong acid, strong alkali, aqua regia and various organic solvents. With low friction coefficient (0.05-0.1), it becomes the best choice for oil free self-lubricating. It has great insulation performance (dielectric constant : 2.6, tangent<0.0025), dimensional stability (elongation coefficient is less than 5), strength and mechanical properties. And it is anti-ultraviolet, anti-static. Its light transmittance reached 6~13%.what’s more, almost all pharmaceutical products can be resistant.

Applications of Teflon High Temperature Cloth

Beacuse of its excellent performances, it is widely used in aviation, paper, food, environmental protection, printing and dyeing, clothing, chemical, glass, medicine, electronics, insulation, building (roof film structure of the canopy), grinding wheel slicing, machinery and so on. It can be made into anti-corrosion coating, liner and liner, anti-viscous transport belt, high-frequency CCL, building film, insulating materials, microwave drying conveyor belt, flexible compensator, friction material, etc. According to the different thickness, it can be used for a variety of conveyor belts of drying machinery. It also can be processed into adhesive tape and sealing belt for all kinds of petrochemical pipelines’ coat, electrical and electronic insulation, temperature-resistant package, environmental protection desulfurization.

The above is the introduction of high temperature cloth from Shenzhen Core-Tex Composite Materials Co., Ltd. in the daily life, the applications of high temperature cloth is very extensive. This invention shows how great the wisdom of mankind. There are increasing inventions that make people’s life become more convenient. Shenzhen Core-Tex Composite Materials Co., Ltd. believes that this materia ltetrafluoroethylene dose not only make people’s life become great, also speed up many aspects of technology development.

The Methods of Repairing the local wear of Teflon conveyor belt in time

Because of large load bearing capacity and high running speed,the higher flame retardant performance of teflon conveyor belt is also required. However, if the technology is not reach the quality standard, the wear resistance of the conveyor belt will decline. If the conveyor belt is seriously worn, the glass fiber will leak out. It won’t work and even be scrapped without a timely fix, which will have a bad impact on the production schedule. Therefore, it is of great significance to repair the local wear of teflon conveyor belt in time to ensure normal production.

Three methods of local wear repair

1.Rubber Patching: The biggest advantage of using of rubber patching that came from the German technology is the fast repair speed. Its downside is that the rubber usually falls off after 60-90 days. What’ more, if the conveyor belt operats in a moist environment, the water vapor will accumulate in the gap between the bonding surfaces and rust the steel wire ropes. It will rust and break the wire rope for a long time, and even cause the breakage of the whole conveyor belt . In addition, this repair method costs a lot.

2.Local Rubber Vulcanization: The partial damage place is vulcanized by the small vulcanizing device. Due to the size of the vulcanizing device, repairing speed is only about 05M/H. This method is not suitable for long-distance reparation.

Rubber Repair Adhesive Covering : The rubber repair adhesive produced at home and abroad is two-component polyurethane adhesive liquidhome and abroad. After mixing the two together, they are filled into the worn surface, and they can form an elastomer that is similar to rubber in a certain time.The time required for curing is generally 5-6h, which is related to the temperature. Laboratory data indicated that the peeling strengthcan reach 6kn/m180 degree, so the combination of repair surface and sealing is pretty good, and do not happen the situation that water vapor cracks into the binding surface and rusts wire rope. What’s more favorable is that its wear resistance is is quite excellent. And the superior wear resistance is the key requirement of the conveyor belt local wear repair. In summary, this method is the most effective way to repair the local wear of conveyor belt.

Through the comparison of three kinds of patching methods and the practice of repairing, we believe that the rubber repair adhesive covering is the most effective method. Furthermore, it can effectively prevent the corrosion of Teflon conveyor belt,which willl result in belt breakage accident.