Is PVC tape the same as electrical tape?

Electrical tape is a type of insulating tape commonly used to wrap pipes and wires. It is made of a slightly elastic material. The tape also has a pressure sensitive rubber type adhesive.

There are two main types of electrical tape. These include PVC and vinyl. However, vinyl is the more popular version of electrical tape. In a sense, you can think of vinyl as synonymous with electrical tape.

Therefore, when we talk about the differences between PVC tape and electrical tape, we mainly compare PVC tape and vinyl tape.

Essentially, both types of tape serve a similar purpose. However, they are differences between the two, so you can’t just say that PVC tape and electrical tape are the same.

pressure sensitive adhesive

What are they used for?

Electrical tape has good insulation properties. Therefore, it is useful for protecting wire joints. It can also be used to provide extra insulation for electrical wires. If you do a quick search for PVC tape, you’ll find that they help insulate electrical applications.
The difference is that it’s made from a popular plastic, a material called polyvinyl chloride or polyvinyl chloride.

As a result, it exhibits some valuable features, such as long-lasting stickiness and good insulation. The tape also withstands temperature well. That means it can work efficiently at temperatures below 80 degrees Celsius.

You might think electrical tape is only black. However, there are several options for colored PVC. This means that you can get tapes in different colors, such as red, blue, orange, and so on.

PVC cold resistant tape is usually suitable for outdoor use.

PVC’s tough coating shows good potential to resist a variety of physical injuries, such as metal corrosion, different weather conditions and wear.

This durability makes PVC cold-resistant electrical tape perfect for wrapping underground and outdoor pipes. Vinyl cold weather tape, on the other hand, is waterproof. At the same time, it is durable. These two attributes make it most suitable for outdoor use.

Again, in cold weather, both types of tape showed significant differences. Electrical tape made from vinyl performs well in the temperature range of 15 to 175 degrees Fahrenheit.
This means vinyl electrical tape is not suitable for outdoor applications when temperatures are below freezing. PVC electrical tape, on the other hand, can withstand temperatures below -50 degrees Fahrenheit. This is despite the fact that PVC has the same heat resistance as vinyl electrical tape.

However, in this case, PVC tape is best for cold weather use compared to electrical tape. Finally, vinyl tape is best for enclosed mechanical and electrical repairs. It can cope well with metal corrosion (such as chemical acid leakage). PVC tape can also help. However, it has a better grasp of outdoor tape demand transactions.

black & white PE films

When wrapping – Things to keep in mind

PVC tape is an electrical tape that is best suited for outdoor use due to its durability and weather resistance. But the important thing to remember is to use the correct tape when wrapping the wire.

PVC electrical tape is made of a rubber-based adhesive that helps it stretch. Know that using any other conventional tape to secure cables and wires is unsafe and increases the chance of a fire.

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Why pressure sensitive tape does not stick in winter?

The failure of pressure sensitive adhesive in extremely cold weather is mainly caused by interface failure. The main reason is that the adhesion between the pressure sensitive adhesive and the substrate is insufficient. Pressure sensitive adhesive with sufficient adhesion requires the following conditions:

Apply uniform pressure at the appropriate temperature to make the pressure sensitive adhesive realize effective contact with the adhesive surface, and then infiltrate the adhesive surface through molecular movement and achieve adhesion. At low temperature, the molecular movement of pressure-sensitive adhesive is slow and it is difficult to quickly infiltrate the adhesive surface. At the same time, the modulus of pressure-sensitive adhesive increases at low temperature. When the same pressure is applied, the adhesive deformation is smaller and the effective contact area is smaller than that at room temperature, which eventually leads to the lower bonding strength.

flame retardant

Provide a certain curing time to make the molecular chain of the pressure sensitive adhesive and the substrate surface close enough to establish the bonding strength. As a kind of polymer product, pressure sensitive adhesive requires sufficient time for its molecular movement, which generally requires curing at appropriate temperature for 72 hours.

Only in this way can the bonding strength between pressure sensitive adhesive and the adhesive surface develop from the weak initial strength to the final bonding strength, so as to achieve the ideal bonding effect. Temperature is also an important factor in this process and at low temperatures the molecules move slower and it takes longer to build up their strength.

Through field visits to customers, we found that many pressure-sensitive adhesive users were not prepared enough for cold weather, and the ambient temperature used for construction was much lower than our recommended temperature, which was the main reason for the failure of a large number of unconventional pressure-sensitive adhesives in winter.

In addition, the low ambient temperature in the storage or post-construction maintenance period of pressure-sensitive adhesives was also an important reason for the bonding failure. It is recommended to choose low temperature adhesive tape to complete the adhesive application in winter. The ability of these tapes to maintain molecular motion at lower temperatures ensures cryogenic performance.

In addition, it can also be improved from storage, construction and maintenance conditions to ensure the winter performance of pressure-sensitive adhesive products.

Storage conditions: low temperature storage will not only make the molecular movement is “frozen” can not be effectively infiltrated, but also will change it from a semi-solid to a brittle non-viscous glass state, resulting in the initial viscosity decline or even disappear. In addition. When the belt is moved directly from the low-temperature storage environment to the greenhouse, the surface is easy to condensation, which will cause the pressure sensitive adhesive release paper to be affected by moisture and fold, which will affect the normal use of the belt. In order to obtain the best performance of pressure-sensitive adhesive, it is recommended that pressure-sensitive adhesive tape be sealed in its original packaging and stored at 23℃ and 50% relative humidity. For rolled pressure-sensitive tape, place the roll core vertically to avoid adhesive overflow caused by local pressure on the tape. If multiple rolls are to be stacked, place the release paper between different rolls to prevent the sides of the rolls from sticking to each other. If the storage conditions cannot meet the above requirements, place the adhesive tape in the original package in the oven or near the heater for a period of time before use to ensure that the adhesive tape temperature is higher than the operating temperature recommended by the manufacturer.

pressure sensitive adhesive

Construction conditions: as far as possible to ensure that the construction environment temperature above 15℃, if necessary, can use the hot air gun and other local heating method. Take measures to warm the tape before use to ensure that the temperature of the tape and the attached position is higher than the recommended temperature. If construction must be carried out at low temperature due to technological conditions, low temperature pressure sensitive tape should be selected. For example, 525 product series can be carried out at 0℃ environment. For more severe application environment, it is recommended to use low-temperature adhesive tape at the same time to pretreat the adhesive surface to improve the affinity between the adhesive surface and the adhesive tape, and speed up the establishment of adhesive strength.

Curing conditions: The establishment process of bonding strength is related to temperature and time. The bonded parts need to be cured in the appropriate temperature environment for a certain period of time to reach the final strength. During this process, the bonded parts should be avoided to be placed in a low temperature environment or subjected to load too early. It is recommended to use fixtures to extend the pressure action time and cooperate with insulation measures to accelerate the strength establishment.

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What are the differences between anti-static PET protective film and electrostatic film?

As we often say, anti-static PET protective film is generally divided into rubber surface anti-static, film surface anti-static, and double-sided anti-static; First of all, the anti-static rubber surface refers to the coating process of PET protective film, adding anti-static agent in the glue, in order to achieve the effect of anti-static rubber surface, the anti-static protective film cleanliness of the rubber surface will be relatively better.

The second film surface antistatic refers to the PET substrate surface coated with a layer of antistatic agent or direct use of antistatic PET substrate made of a protective film, film surface antistatic protective film generally in die cutting punching type can make the protective film between each other not because of static electricity and stick together;

PET Protective Film

The third double-sided antistatic refers to the combination of the first two ways to make a protective film, this protective film will have a certain shielding effect, and these several anti-static protective film can play a role in preventing electrostatic breakdown of the circuit board, so some electronic products screen surface will be used more.

Anti-static pet protective film and electrostatic film are two completely different things, first from the material, our common anti-static protective film is generally pet material protective film, and electrostatic film is generally pe material protective film; The second difference is that the anti-static pet protective film is coated with anti-static agent inside the glue or on the surface of the pet film, so that the pet protective film can prevent the electrostatic adsorption of dust and breakdown of the circuit board, while the PE electrostatic film is bonded to the surface of the paste by electrostatic adsorption, because it does not have adhesive itself. So there’s no risk of gum residue.

Many customers have asked us whether the pet protective film is adsorbed by static electricity. I have asked many of our friends about this question, and reached the same conclusion: No. The common materials of electrostatic film are PE, PVC and so on. But there may be a misunderstanding here. Customers regard the pet protective film that is slightly sticky and only a little sticky as an electrostatic film to use. The viscosity of the micro-mucosa is very low, and they even don’t feel it when they touch the rubber surface by hand. It’s just very low viscosity.

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Single layer PET protective film and double layer PET protective film feature introduction

PET properties: PET protective film material is transparent and colorless, the surface has been hardened; Data show that the general PET protective film material according to the different factory, the surface hardening value is between 3H~4H, which means that the better the surface hardening, the stronger its wear resistance. Another is the transmittance, which is also the main property of PET protective film material. The general transmittance is more than 90%. The transmittance determines the quality of a visual effect in the use of related instruments, and it has a good protective effect on the eyes.

compositing

PET protective film features:

  1. Surface resistance 107-109Ωcm, environmental protection, non-toxic and tasteless;
  2. No electrostatic material migration phenomenon on the surface of the product;
  3. 1000 level clean environment processing, excellent cleanliness;
  4. Excellent transparency, can be in the state of fitting protective material for optical film appearance inspection;
  5. Low viscosity, adhesive force changes little after attaching;
  6. Excellent anti-static effect, durable and stable performance;
  7. The product has single-side anti-static and double-side anti-static stripping voltage.

PET protective film can be divided into: single layer PET protective film, double layer PET protective film and three layers of PET protective film.

A, the structure of single layer PET: polyester film (PET) as a material, is based on polyethylene terephthalate ethanol fat as raw material, is made of extrusion thick sheet, and then made of bidirectional stretching film material, single coated silicone who made of single layer PET silicone protective film.

Thickness and viscosity of single layer PET protective film: thickness is 6C, viscosity is low viscosity, gram number is 1~2 grams.

Single layer PET use: mobile phone screen protection film, optical acrylic plate diffusion film, brightening film surface protection, liquid crystal panel, other smooth flat materials or workpiece processing protection.

Two, the structure of the double layer PET protective film: polyester film (PET) as the base material, polyethylene terephthalate as the raw material, the film material made by extrusion method; Single side coated silica gel, and release paper or release film and other release materials composite.

protective films

Characteristics of double layer PET protective film:

  1. Easy to peel, no residual glue, stable viscosity
  2. The protective film of the release material is dust-free coating, with high cleanliness
  3. Suitable for use in PC, PMMA, ABS, metal and glass material related products surface protection

Thickness and viscosity of double layer PET: the thickness is 6C, and the viscosity is divided into low viscosity and medium viscosity (the gram number of low viscosity is 1~2 grams).

The use of double layer PET: mobile phone lens, polarizer, LCD optical film during the process of surface protection film liquid crystal display panel, touch screen process protection, photoelectric material molding after the temporary carrier. The characteristics of double layer pet protective film are widely used, and as consumables in industrial production and life has been widely used.

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Why should double 85 test be performed on PET protective film?

What exactly is Double 85?

Double 85 test refers to the aging test of the test body in the environment set at the temperature of 85℃ and humidity of 85%, that is, the harsh reliability test. The usual time is 1000 hours, mainly testing the product in the harsh environment of high temperature and humidity can withstand the limit.

Constant temperature and humidity test is used to test the heat resistance, cold resistance, dry resistance and moisture resistance of materials or products in various environments, while double 85 test is aimed at the heat and humidity resistance of products.

Double 85 test refers to comparing the performance changes of products before and after aging, such as photoelectric performance parameters of lamps, mechanical properties of materials, yellows index, etc., after aging products at 85℃/85%RH. The smaller the difference, the better, so as to test the heat and humidity resistance of products.

Low-E glass protective film usage-1

Reliability “double 85” test is widely used in LED and photovoltaic industry, LED light source, module and accessories need to carry out reliability “double 85” test to reproduce the high temperature and humidity environment damage to its components, and this is also a common use of product life test environmental test conditions.

For welded components, the reliability of the “double 85” test can be tested against the long-term penetration of high temperature moisture. For plastic components, the reliability of the “double 85” test can examine the mechanical properties of the material, yellow resistance, heat resistance, acid, alkali and salt resistance, especially the data comparison before and after the test can show this trend. Reliability of the “double 85” test has penetrated into all walks of life, electronic, electrical, communication technology, instrument, vehicle, medical, plastic products, aerospace and other industries widely used.

For our ordinary glass-bonded PET protective film, the test temperature is generally 60 degrees and the high humidity is 90%, and the test time is about 3 days. For some industries, such as the pet protective film of the car screen, the test time may be 4-5 days. If the PET protective film is exported to foreign countries, it will be required to do a double 85 test. Because most of the products go abroad by sea, which takes a long time on the sea, the test time is required to be 7-10 days.

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Why does Pet protective film appear crystal point and foreign body point?

How is the crystal point of PET film formed?

PET film left on the surface of the round small points, it is embedded in the film, there is an obvious protrusion, under the irradiation of the light source, there will be a little obvious bright point, that is, the crystal point, it is very big influence on the film, then how is it formed?

As we all know, PET film is formed by two-way stretching and calensing, before stretching and calensing, it is necessary to melt the raw material PET pellets, after melting PET pellets in the nozzle flow out, after two-way stretching, but in the melting process, due to the quality of the particle itself, the temperature of the furnace and other conditions, As a result, some particles are not fused effectively, and thus crystal points are formed during casting elongation. But now, after the improvement of machinery and testing equipment, the current PET film production process has been greatly improved, and the crystal point problem has also been improved a lot.

pressure sensitive adhesive

Similarly, due to the improvement of the process and production method, the quality of the frosted PET film produced is also continuously improved. Therefore, the quality of the film in the future will be better and better with the improvement of the production process and production method. The crystal point and foreign body point of PET protective film is a very common adverse phenomenon in the industry. The crystal point of pet protective film refers to those very small bright spots on the protective film. This situation generally appears on the pet substrate of pet protective film. The crystal point of pet protective film is related to the production environment of the original film, as well as the raw material of pet film and the quality of pet particles.

The appearance of foreign body points is because there are impurities, dust and other fine particles of glue, generally because the workshop environment level is not enough or is an adverse phenomenon of improper operation. Another possibility is that the reaction occurred after the pet protective film was fitted with the object, resulting in the phenomenon of crystallization, which would also be judged as a foreign body point.

Crystal spots and foreign body spots appear in Pet protective film. There are several solutions as follows. One is to improve the cleanliness of the workshop and prevent dust from entering the air to avoid crystal spots or foreign body spots.

The second is to improve the storage and transportation environment, ensure the cleanliness of raw materials and glue, strictly control the order of production, to prevent cross-contamination of different types of raw materials;

The third is to avoid this kind of undesirable phenomenon when choosing glue with the original film, do not ignore the quality in order to pursue the price;

The fourth is that when customers use pet protective film, they should try their best to test the sample first to ensure that the pet protective film material will not react with the paste, and help customers to match the material, so as to avoid this kind of adverse phenomenon.

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Classification of protective film

Protective film is a product of polyethylene film manufactured by machining technology. It has certain characteristics of wear resistance, cost economy, strong impact resistance, easy printing and strong barrier performance, which can improve the protective performance of products and ensure that products are not easy to be damaged.

The protective film is mainly composed of plastic and polyethylene. The protective film is mainly used in hardware industry, printing industry, stainless steel plate and other fields or scenarios. Protective film can be made into computer case, galvanized plate stamping, stainless steel plate in the metal industry scene, can be made into PC board, aluminum plate, film in the printing industry scene, can be made into mirror steel plate, frosted steel plate, color steel plate in the stainless steel plate scene.

pressure sensitive adhesives

What is a single layer protective film?

Single-layer protective film is generally made of PE material, PET material, PVC material, PP material, etc., different materials, the price difference is very large, and the field of use is also very different.

Here I will focus on introducing the single layer protective film of pet material. Single layer pet protective film is also divided into bubble and no bubble. Single layer pet protective film with bubble is mostly used as a base for waste discharge. And the bubble free single layer PET protective film is often used for mobile phone screen protection film, optical acrylic plate diffusion film, brightening film and other surface protection, more suitable for some appearance of shipping products.

What is a triple shield?

Three layers of protective film is generally made of a layer of surface protective film, a layer of the middle of the use of layer, plus a layer of rubber surface bottom film or release film. Generally, three layers of protective film will be used as a functional film, because three layers of protective film is actually more will flow to our end customers, like our common anti-scratch, anti-glare, anti-fingerprint, scrub, anti-blue ray protective film and so on. Three-layer protective film is often used to protect the surface of mobile phone screens, tablets, laptops, LCD panels, etc.

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Why does the protective film appear white fog?

Now the fast drying glue can not put an end to this kind of whitening phenomenon, we have also encountered this problem, our solution is silicone glue, put in a ventilated place with a fan after 2H, and then it is fully dry in the product packaging gift box, so that there is basically no white fog. This is a common phenomenon!!

flame retardant

There may be the following reasons for whitening of quick-drying silicone glue:

  1. glue water control is not good, leading to bleaching
  2. The air in the working environment is too stuffy and not ventilated enough. Because the quick-drying silicone glue is cured by moisture, the white fog left behind will cause bleaching in the process of curing.
  3. In addition, the glue whitening itself is more serious. If you want to solve this problem, there are many ways to solve it.

In the face of quick-drying silicone glue whitening phenomenon you can try:

  1. Depending on the bonding surface, control the amount of glue, if it is manual operation, try to change to machine control
  2. Make ventilation points for the indoor environment
  3. Convenient can add accelerator UV glue can not be used and to use the quick-drying silicone glue + accelerator to solve the problem of bonding, whitening is really a headache, this is because of the curing basis of the quick-drying silicone glue, its curing needs wet air but not too much, if less strength is not enough, more there is white fog, So low white fog product strength is not high, but from the current point of view this is a worldwide problem, only the accelerator + glue is the best method at present, of course, the number of white fog or depends on the operator’s technology, can not be generalized.

a pressure sensitive adhesive

PU protective film is normally more stable than silicone protective film and acrylic protective film, but there are still some customer feedback pu protective film will appear white fog phenomenon. Pu protective film white fog is the root cause of precipitation, precipitation refers to the molecular weight is too small, with the change of time to penetrate into the surface of a phenomenon, electrostatic agent is a very small molecular weight of a substance, because of the influence of environmental relations, or the amount of electrostatic agent is not well controlled, there may be precipitation phenomenon; There is also a situation that the instability between the glue and the original film caused by the precipitation of water molecules, when the water meets the oil glue, because of the incompatible principle, there may be a phenomenon of white fog.

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Basic knowledge of PU protective film

Basic information

polyurethane (English name) : PU polyurethane, Chinese name: polyurethane; In Chinese, polyurethanes, also known as polycarbamates, are macromolecular compounds containing a duplicate carbamate group (NHCOO) in their main chain. It is composed of organic diisocyanate or polyisocyanate and dihydroxyl or polyhydroxyl compounds.

In addition to carbamate, polyurethane macromolecules can also contain ether, ester, urea, biuret, urea formate and other groups.

Polyurethane (PU for short) is a polymer made from polyisocyanate and polyether polyols or polyester polyols or/and small molecule polyols, polyamines or water and other chain extenders or crosslinking agents.

Acrylic pressure sensitive tape

Physicochemical properties

CAS No. : 51852-81-4

Subformula: The general formula can be -[-O-conh -]n- a polymer compound formed by the action of binary or multiple isocyanate with binary or multiple hydroxyl compounds, binary amines, etc.

Poly (carbamate) is a polymer compound with a molecular structure containing NHCOO – unit, which is formed by the reaction of isocyanate group and hydroxyl group. The reaction formula is as follows: -n =C=O+HO-→ -Nh -COO-

Product summary

A high temperature protective film with environmentally friendly PET as the base material, coated with PU adhesive, so that it has low adhesion, and can be bonded for a long time, and will not appear degumming phenomenon after removal.

Features: high light transmittance, high weather resistance, low adhesion and easy to tear, no glue residue, high temperature resistance

Features: high cleanliness, strict foreign body control; Excellent adhesion properties for the pasted objects; There is no residual glue after pasting, and the product transparency is 90%. Optical grade PET material, good transmittance.

PET is a composite optical protective film based on polyurethane adhesive. Its reuse and good air tightness, can be used for various optical parts protection. Compared with the previous protective film, the pollution is low, especially suitable for the touch screen ITO glass processing, the performance is better than the ordinary silicone protective film, can solve the ordinary silicone protective film white fog and local degummy problems.

aluminum profile surfaces

Application and function of PU protective film

Anti-static PU protective film, is to die cutting processing, laminating with antistatic function, which can prevent and avoid die cutting processing and environmental dirt; The rubber surface anti-static PU protective film is to avoid the electrostatic generated by friction when the protective film is torn, resulting in short circuit on the sensor surface. Chen said, “Kaismau protective film started from Apple’s IPAD products, and now high-end customers have adopted Kaismau PU protective film Xinli, Foxconn, TPK and many other well-known enterprises.”

Kaisimao PU protective film is also the world’s most complete and most manufacturers, according to the different functions of rubber surface anti-static, film surface anti-static, rubber film double-sided anti-static, non-anti-static and other functions of PU protective film; According to different PU adhesive strength, there are 1 g, 3 g, 5 g, 8 g, 10 g series PU protective film; According to the different thickness of PET substrate, there are 0.05mm, 0.075mm, 0.1mm PU protective film; According to different release film, there are 5 g, 8 g, 10 g equal release rate PU protective film; According to different temperature resistance, there are 90 degrees, 150 degrees, 230 degrees and other PU protective films. There are more than 20 types of PU protective films publicly sold by Kaisimao in the market and PU protective films exclusively for projects.

Common faults of PU protective films

In the process of die cutting, improper treatment, usually cause fog, residual glue, bubble printing, dust, dirt and other phenomena, so the protective film treatment technology is particularly important. The reason for these problems is that the precision of die cutting equipment is not enough and the process is improper. In the chemical molecular structure of PU glue, the molecules are tightly held, and other chemical molecules are excluded, so it is easy to be lost by gravity of foreign objects. The solution is to improve the die cutting process and equipment, cover PE film and mesh film to avoid dust.

The good and bad quality of protective film products, in addition to the research and development of technical strength, production equipment, production experience and other differences in the reasons, as well as the choice of raw materials. Material selection directly affects the quality of PU protective film.

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What should I do if the PET protective film is dirty?

PET protective film is a new type of plastic protective film, which has a good protective effect on LCD screen, mobile phone screen, glass cover plate and so on. It improves the beauty of glass products sales as a whole, and plays a protective role on the surface cleanliness of glass products.

First, the high temperature resistance of PE protective film is determined by the use of materials?

PE protective film does not have the characteristics of high temperature resistance, the use of temperature in 60 degrees Celsius, and the material used in the protective film has a certain relationship, the material determines the high temperature resistance of PE protective film is poor.

Second, PE protective film, in the stripping force test, what are the main influencing factors? How do you peel the protective film off the cabinet without leaving a trace?

In the peeling test of protective film, there are many factors affecting it. The main ones are the electrostatic strength of the film surface, the amount of lubricant used on the film surface and the release processing factors. As for the protective film on the cabinet, as long as the hair dryer blows, the protective film can be torn down.

Three, the keyboard protective film, how to have stains on it, how to remove it?

The protective film on the keyboard, if there are stains on it, can be easily removed, and the operation is not complicated, one is to add a small amount of cleaning detergent in clear water, and then wash with a brush, one is to clean with an organic solvent, such as ethanol.

There are three reasons for the dirty Pet protective film. One is caused by environmental reasons in the production process, the other is produced in the process of processing into finished products, and the other is produced in transit. To solve the problem of dirt, we can improve the environment of the workshop, or cover the surface with a layer of PE film to isolate foreign bodies or prevent scratches. We can also pay attention to the tightness of the package when packaging.

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