Can the meltblown cloth electrostatic electret keep the static electricity for a long period of time

Not really. The electrostatic attenuation of meltblown cloth is also related to factors such as packaging and storage environment.

So how do meltblown cloth be stored?

To prevent the static electricity of meltblown cloth from disappearing, the following are usually required:

Clause. 1. Keep away from places with electric potential energy, such as televisions, refrigerators, transformers and other electrical appliances;

Clause. 2. Do not place directly on the metal surface, and use insulator materials for placing the utensils;

Clause. 3. Place it in a cool and dry place to avoid the influence of water vapor on the meltblown cloth;

Clause. Fourth, single-roll PE bag vacuum packaging, storage temperature 18 32.

DKM is a professional melt-blown cloth manufacturer, the following are our packaging steps for melt-blown cloth:

1. Automatic winding and slitting machine to complete winding and slitting;

2. The cloth roll after the completion of winding and slitting shall be monitored immediately, and the monitoring report shall be attached to the single volume;

3. After passing the test, it is vacuum-packed with PE bags according to the requirements of different standards, so that the melt-blown cloth can maintain the electrostatic adsorption effect when it is rolled into a roll and prolong the shelf life;

4. After vacuum packaging, PE bags are packed in cartons of corresponding specifications, and desiccant is placed in the carton packaging to absorb excess moisture in the air and further anti-static attenuation;

5. The carton is wrapped, transferred out of the shipment or temporarily stored in the warehouse, and the temporary storage environment temperature is 18 32.

Only by doing a good job of packaging and storage can the meltblown cloth still maintain excellent electrostatic adsorption effect.

The common electret on the market is to fight static electricity, and there is now a gy-2768E self-charged electret on the market. It is possible to achieve that static electricity never disappears. Even if the commission is discharged by way of discharge, it will be automatically restored.

The electrostatic electret (referred to as the electret) has the advantages of high efficiency, low resistance, adsorption of very small particles, and improvement of the purification efficiency of very small particles. Electrostatic electricity is currently the best electrostatic electret method, the electret machine implants electrons into the material through the electret rod to polarize the material, so that it can store static electricity for a long time, such as the material in the electret microphone, the electrostatic energy can be stored for more than 5 years or even longer.

Meltblown cloth is a filter material with polypropylene as the main raw material. The diameter of its fibers can reach 1 5 microns, and these ultra-fine fibers with unique capillary structure increase the number and surface area of fibers per unit area, so that meltblown cloth has good filtration, shielding, thermal insulation and oil absorption, and can be used in the fields of air and liquid filter materials, isolation materials, absorption materials, mask materials, warm materials and wiping cloths.

The electrostatic electret of meltblown cloth does not need to add other substances, but the electret electrostatic electricity obtained by applying high-voltage electric field and other methods, theoretically the electrostatic charge can exist for a long time, similar to the electret microphone can be used for a long time, but the premise is that it cannot be damp, and the charge will gradually lose after moisture.

Hello! Electrostatic electret refers to the electret for short, "pole" refers to the electric charge, and "station" refers to the application, the electrostatic electret equipment attaches the charge to the meltblown non-woven fabric through high-voltage discharge. Here's how it works:

Combined with the dense characteristics of meltblown microfiber material, a large number of electrodes are formed between the charged fibers, which can not only attract most of the charged particles in the environment like magnets, but also polarize the charged particles, and then adsorb some smaller pollutants, and even viruses can also carry out electrostatic adsorption or charge repulsion barriers. It can be seen that the filter material treated by electrostatic electret has the advantages of high efficiency, low resistance, and adsorption of very small particles.

When many people judge the authenticity of a mask, they will do a test - cut the mask to reveal the meltblown layer to see if it can absorb the scraps of paper. In fact, this is the application of electrostatic adsorption, a physical feature, to verify whether the meltblown cloth material is electrified. Although there is meltblown cloth in some fake and shoddy masks, it has not been electret treated, or because the electret technology is not up to standard, the storage time is too long, etc., resulting in a large amount of charge dissipation, and its protective performance is naturally not up to standard.

Therefore, it is recommended that you buy a mask made of meltblown cloth that has been treated with electrostatic electret technology, such as the KN95 protective mask RX9501 of Raxwell, which uses double-layer electrostatic electret meltblown cloth for strong protection, and has been authorized by the US FDA for emergency use, and the protection is more guaranteed.

The electrostatic electret is the best way to improve the filtration efficiency of the melt-blown cloth after selecting the best raw material formula, using the best equipment and technology, but it should be emphasized that the electrostatic electret must not be used as a "panacea" when improving the filtration efficiency of the melt-blown cloth, and the filtration of the cloth made by the soil cannon machine is only 10-20% after adding the masterbatch, the first thing to consider is to change the raw material formula and process, and then consider the electrostatic electret. The following are the replies of Shanghai Lishan to the most common questions encountered in the meltblown cloth industry:

1. Is it better to choose the greater the voltage or power when purchasing electrostatic electret equipment?

Re: The voltage and power are not as large as possible, we need to reside the positive and negative charges on the molecular layer of the melt-blown cloth, if the voltage and power are too large, it is easy to destroy the molecular layer of the melt-blown cloth so that the static electricity can only be added to the surface of the cloth, and the static electricity on the surface usually runs out in 2-3 days. Experiments have shown that the electrostatic electret equipment usually used on meltblown cloth has a voltage between 20-60kv, and the appropriate power is selected according to the width of the cloth.

2. Is it correct to produce a visible arc (commonly known as a spark) during the electrostatic electret?

Re: Visible sparks can break down meltblown cloth, and the following test results are typical reports of spark breakdown, and the filterability is much lower.

3. Is it a cloth with good filtration effect if you can feel a strong current or feel numb to the touch when you feel electrostatic electret?

Re: As mentioned in question 1, the cloth that feels strong static electricity does not mean that it is a cloth with good filtering, because it may not be located in it. On the contrary, according to the actual measurement, the static electricity of the meltblown layer of the KN95 of the American 3M and the KF94 finished mask of South Korea does not exceed 2KV, and there will be no static electricity sensation when touched by the hand, so the filter effect of the cloth made cannot be speculated by feeling, and the PFE filtration test is its gold standard.

In 2020, the global epidemic began to break out, and masks became a shortage item, and the main raw material of masks: meltblown cloth also became a shortage item. With the shortage of melt-blown cloth, many people have begun to make melt-blown cloth, resulting in uneven melt-blown cloth products, and in the context of increasing the vigorous crackdown on counterfeit and shoddy melt-blown cloth, melt-blown cloth electrostatic electret equipment is one of the necessary supporting products for the production of melt-blown cloth.

As a result, the most advanced electrostatic electret equipment on the market from thousands of yuan to tens of thousands of yuan has flocked to the melt-blown cloth industry overnight, and customers do not know how to choose an electrostatic generator, and they must understand its principle when choosing melt-blown cloth electrostatic electret equipment.

Meltblown cloth is polypropylene, polypropylene is a homopolymer polymer material, because the conductivity of polypropylene is particularly poor, so it becomes a good electret material, electret, "pole" refers to electric charge, "station" refers to the application, meltblown cloth electrostatic electret equipment how to apply static electricity to meltblown non-woven fabric? It is a high-voltage discharge, the charge is attached to the meltblown non-woven fabric, the electret treatment makes the filter material fiber charged, combined with the dense characteristics of the meltblown microfiber material, so a large number of electrodes are formed between the charged fibers, and the charged fiber can not only attract most of the charged particles in the environment like a magnet, but also polarize the uncharged part of the particles, and then adsorb some pollutants with smaller particle size, and even the nano-scale substance of the virus can also be electrostatic adsorption or charge repulsion barrier.

Meltblown cloth electrostatic electret equipment (also known as electrostatic generator) is a kind of special equipment that generates static electricity, with stable output voltage, comprehensive protection, simple operation, high efficiency, low flow resistance, antibacterial, energy saving and other advantages, on the basis of ensuring the physical collision barrier effect of conventional filter media, the electrostatic adsorption effect is increased.

Respondent: Huatian Power.

With the increase of electret time, the charge density of the deposited equivalent surface increases, and the electric potential on the surface of the electret increases, so that the electret time increases, and when the surface potential of the filter material is high enough, the charge under the tip of the needle will be repelled and move to other places with less charge density. When the electret ends, its charge surface density reaches a saturated state, so when the electret time increases again, the filtration efficiency of the filter material does not change significantly.

Electrostatic electret equipment, dust, bacteria, and viruses in the air are attached to the particles, which are mainly negatively charged, and the meltblown cloth is positively charged, which is easy to adsorb these negatively charged particles.

Luyuan electrostatic electret equipment, 120kv high power, up to 99 levels!

The electret masterbatch has little ability to increase static electricity, mainly to store the charge and make the attenuation slower.

It is difficult to prevent the natural loss of static electricity from meltblown cloth, but in a humid and high-temperature environment, it will accelerate the loss of static electricity. If you want to delay the loss of static electricity of meltblown cloth, try to avoid humid and high temperature environments, and try not to stock for a long time. <

It is difficult to prevent the natural loss of static electricity from meltblown cloth, but in a humid and noisy environment with high temperature, it will accelerate the loss of static electricity. If you want to delay the loss rate of static electricity of meltblown cloth, try to avoid humid and high temperature environments, and try not to stock for a long time.

Meltblown cloth is a filter material with polypropylene as the main raw material. The fiber diameter can reach 1 to 5 microns, and these ultra-fine fibers with a unique capillary structure increase the number and surface area of fibers per unit area, so that the meltblown cloth has good filtration, shielding, thermal insulation and oil absorption, and can be used in the fields of air and liquid filter materials, isolation materials, absorption materials, mask materials, warm materials and wiping cloths.

Scope of application: 1. Medical and health cloth: surgical gowns, protective clothing, disinfection wraps, masks, diapers, women's sanitary napkins, etc.

2. Cloth for home decoration: wall cloth, tablecloth, bed sheets, bedspreads, etc.

3. Clothing cloth: lining, sticky lining, wadding, shaped cotton, various synthetic leather base fabrics, etc.

4. Industrial fabrics: filter materials, insulating materials, cement packaging bags, geotextiles, covering fabrics, etc.

5. Agricultural cloth: crop protection cloth, seedling raising cloth, irrigation cloth, thermal insulation curtain, etc.

6. Others: space cotton, thermal insulation and sound insulation materials, linoleum, smoke filters, tea bags, etc.

1-3 months. Meltblown cloth is the core material of the mask, and the meltblown cloth is mainly made of polypropylene, and the fiber diameter can reach 1 5 microns. There are many voids, fluffy structure, good anti-wrinkle ability, and the ultra-fine fiber with unique capillary structure increases the number and surface area of fibers per unit area, so that the melt-blown cloth has good filtration, shielding, thermal insulation and oil absorption.

It can be used in the fields of air and liquid filter materials, materials for separation, absorbent materials and wiping cloths. <

1-3 months. Melt-blown cloth is the core material of the mask, and the melt-blown cloth is mainly made of polypropylene royal grill as the main raw material, and the fiber diameter can reach 1 5 microns. There are many voids, fluffy structure, good anti-wrinkle ability, and the ultra-fine fiber with unique capillary structure increases the number and surface area of fibers per unit area, so that the melt-blown cloth has good filtration, shielding, thermal insulation and oil absorption.

It can be used in the fields of air and liquid filter materials, isolation materials, absorbent materials and wiping cloths.

On March 8, 2020, the State-owned Assets Supervision and Administration Commission (SASAC) introduced that in the face of the blowout demand for meltblown fabric, the core material of masks, the SASAC guided and promoted the relevant first-class enterprises to speed up the construction of production lines, put into production as soon as possible, expand the market supply of meltblown fabrics, and provide guarantee for epidemic prevention and control. According to the special working group of medical supplies of the State-owned Assets Supervision and Administration Commission, as of 24 o'clock on March 6, the output of meltblown cloth reached about 26 tons on the same day. With the completion and operation of the new production line, the output of meltblown cloth is expected to increase significantly in the coming week.

SASAC and ** enterprises will continue to increase efforts to ensure medical supplies such as raw materials for the production of medical masks.

1 to 3 months. The melt-blown cloth is mainly made of polypropylene, with a fiber diameter of 1 5 microns, and a unique capillary structure that can increase the unit area and the number of fibers, so that the melt-blown cloth has good filtration, shielding, thermal insulation and oil absorption. <

The electrostatic energy of the meltblown cloth lasts for 1 to 3 months. The melt-blown cloth uses polypropylene as the main raw material, and the diameter of the fiber hail can reach 1 5 microns, and it has a unique capillary structure that can increase the unit area and the number of fibers, so that the melt-blown cloth has good filtration, shielding, thermal insulation and oil absorption.