Why Melt Blown Air Heaters Are Used in Meltblown Machine?

Meltblown machine cloth heater is a kind of electric heating device which uses to heat gas in a cylindrical heat preservation container. The non-woven cloth heater has the characteristics of fast heating speed, good heat preservation performance and high heating temperature.

The heater is composed of body and control system. The heating parts are made of stainless steel tube as protective casing. High temperature electric resistance alloy wire crystallized magnesium oxide powder by compression process. In the control part, the advanced digital integrated circuit trigger and high reverse voltage thyristor use to make adjustable temperature measurement. And constant temperature system, which ensures the normal operation of the electric heater.

Melt Blown Cloth Heater Technical Features:

  1. It can obtain higher working temperature under lower operating pressure.
  2. The thermal efficiency of melt-blown cloth heater is high, up to 95%, and the temperature control accuracy can reach ± 1 °C.
  3. The equipment size is small, the installation is more flexible. And it should installe near the heating equipment and the power is large.
  4. Fast thermal response, high temperature control accuracy, high comprehensive thermal efficiency.
  5. The melt-blown cloth heater has a wide application range and strong adaptability. It can apply to explosion-proof or ordinary occasions. Its explosion-proof grade can reach B and C grades, and its pressure can be 20Mpa. And according to the needs of users using vertical or horizontal cylinder installation.
  6. High heating temperature: The maximum operating temperature of the design can reach 650 ° C, which is not available in general heat exchangers.
  7. The melt-blown cloth heater has long service life and high reliability. It has composition of special electric heating material, and the design power load is conservative.

Why Melt Blown Air Heaters Uses in Meltblown Cloth Equipment?

Since the airflow pressure of the melt-blown airflow drafting system is higher, it requires a fan with higher output pressure. Roots fans, spiral fans, screw compressors are the more commonly used draft fans.

Which Meltblown Air Heater Performance to Choose?

The air gap of melt-blown components is small and the system resistance is large. In order to maintain a certain flow rate, it is necessary to choose the air compressor with high energy consumption and high pressure as the draft airflow pressure source. You would use a ducted air heater.

Guanlong Meltblown Machine Non Woven Fabric

What is the operating principle of a melt blown air heater?

In meltblown systems, most air heaters are electrically heated. Inside the heater housing made of stainless steel. The tubular electric heating element equips with a large number of stainless steel material. When it energize, the tube will heat up and exchange heat with the airflow sent by the fan. And the heat will transfer to the airflow, which becomes the high temperature draft airflow needed by the process.

What is the attention point of the melt-blown air heater?

  1. The heater control part is a precision instrument. Be careful when transporting. It strictly forbids to impact or hit.
  2. The cylinder part should hoist reasonably to avoid deformation and damage the internal heating element.
  3. The heater and control cabinet place in the library, and it strictly forbids to rain.

Technical Debugging of Meltblown Machine

The quality of meltblown cloth is more and more demanding. Here are some technical points of the meltblown machine in the production process of melt blowing cloth:

  1. Production equipment

As long as the following standards achieves to produce high-quality melt-blown cloth is not a problem. Its production equipment composition is not much to say that you all know. The extruder will melt the material. You have enough pressure to squeeze it out. The metering pump supplies mold melt continuously and stably. Uniform wire tapping and hot air. The heating tank can stabilize the heating air. The air supply equipment can have sufficient air volume and pressure. In fact, this is enough, many people say that the pressure should be more than 0.4 or even 0.6, in fact, no, the air volume is enough to be able to produce filaments. Electrostatic electret can hit above 60KV.

  1. Raw material

We use the basic material melt refers to the basic 1500, not less than 1200 on the line. Set the appropriate temperature according to the level of the melt. Electret masterbatch can have a continuous ability to lock electricity, there is no need to pursue organic inorganic.

  1. Adjusting machine

Equipment materials are no problem, to have a good technician to set the appropriate parameters of high-quality cloth out. The same equipment can use to set a variety of parameters to make the same quality of cloth, here will be a half time to say, you can send me a private letter according to their own situation.

  1. Frequently Asked Questions

Cloth hard or brittle toughness poor solution. Low temperature hardness increases air flow and air temperature and mold temperature to make the wire thin and soft. High temperature appropriate increase the receiving distance, increase the net transfer suction.

  1. Crystal point

The temperature is the main reason to cause the crystal point. The melt temperature is too high (viscosity is too thin) or too low (viscosity is too large). And observing the change of the mold temperature or the wind temperature adjust the crystal point. The second material is wet, open the dryer 75 ~ 90 degrees baking material on the line. Third, the hot air has large water content, and the water and gas separat before the air enters the heating tank.

  1. Filtration rate

The filter rate of the cloth itself, the filamentary filter effect is naturally improved. The second electrostatic electret and masterbatch with enough particle adsorption, the simplest test method cloth roll open about 20 cm can be their own absorption fit on the line.

In fact, it is not difficult to make high-quality cloth, as long as the equipment and materials are no problem. Other debugging on the two points of temperature and air volume with a good line.

Guanlong Meltblown Machine

The difference between medical non-woven fabrics and ordinary non-woven fabrics

At present, the common types of non-woven fabrics on the market can be mainly divided into two types, one is ordinary non-woven fabrics, and the other is medical non-woven fabrics. Because they are mainly used in medical treatment, they have strict quality requirements. Besides, what are the differences between the two?

  1. Antibacterial ability

Since it is a medical non-woven fabric, the first criterion is the antibacterial ability. Generally, the smmms three-layer melt-blown layer structure is used. The ordinary medical non-woven fabric uses a single-layer melt-blown layer structure. Compared with the two, it must be a three-layer structure. Antibacterial ability is stronger. As for non-medical ordinary non-woven fabrics, because there is no meltblown layer, it does not have antibacterial ability.

  1. Suitable for a variety of sterilization methods

Since it has antibacterial ability, it also needs corresponding sterilization ability. High-quality medical non-woven fabrics can be applied to a variety of sterilization methods. There are three common sterilization methods: pressure steam, ethylene oxide, and hydrogen peroxide. However, ordinary non-medical non-woven fabrics cannot be applied to various sterilization methods.

  1. Quality control

Medical non-woven fabrics all need to pass the certification of the relevant product quality control system, and there are strict standards and requirements for each step of the product in the production process.

The main difference between medical non-woven fabric and ordinary non-woven fabric is mainly reflected in these aspects.

Our company is a professional manufacturer of non-woven fabrics, producing various types of non-woven products. We can produce non-woven fabrics of various widths and colors according to customer requirements. They are widely used and have many specifications. Special treatment such as hydrophilic, anti-aging, anti-static and anti-ultraviolet.

Production process and advantages of non-woven geotextiles

The non-woven fabric has no warp and weft threads, so it is very convenient to cut and sew, and it is light and easy to shape.
Because it is a fabric that does not require spinning or weaving, it just orients or randomly arranges textile staple fibers or filaments to form a web structure, and then uses mechanical, thermal bonding or chemical methods to reinforce it.
It is not interwoven and braided by yarns one by one, but the fibers are directly bonded together by physical methods, so when you get the sticky scale in your clothes, you will find that, You can’t get a single thread out. Nonwovens break through the traditional textile principles, and have the characteristics of short process flow, fast production rate, high output, low cost, wide application, and many sources of raw materials.

The relationship between non-woven fabrics and spunbond fabrics

Spunbond and non-woven fabrics are subordinate. There are many production processes for the manufacture of non-woven fabrics, of which spunbond is one of the non-woven production processes.
(Including spunbond, meltblown, hot rolling, spunlace, most of the non-woven fabrics on the market are produced by spunbond)
According to the composition of non-woven fabrics, there are polyester, polypropylene, nylon, spandex, acrylic, etc.; different components will have completely different styles of non-woven fabrics. The spunbond fabric usually refers to polyester spunbond and polypropylene spunbond; and the styles of these two kinds of fabrics are very similar, and can only be judged by high temperature test.
Non-woven fabric is a kind of non-woven fabric, which directly uses polymer chips, short fibers or filaments to form fibers through air flow or machinery, and then undergoes hydroentanglement, needle punching, or hot rolling reinforcement, and finally after finishing Formed non-woven fabric. A new type of fiber product with a soft, breathable and flat structure, the advantage is that it does not produce lint, it is strong, durable, and silky soft, and it is also a kind of reinforcing material, and it also has a cotton feel. Compared with cotton fabrics, non-woven Cloth bags are easy to form and inexpensive to manufacture.

  1. Light weight: Polypropylene resin is used as the main raw material, with a specific gravity of only 0.9, only three-fifths of cotton, with fluffy and good hand feeling.
  2. Soft: It is composed of fine fibers (2-3D) and is formed by light point-like hot melt bonding. The finished product is moderately soft and comfortable.
  3. Water repellency and breathability: Polypropylene chips do not absorb water, have zero moisture content, and the finished product has good water repellency. It is composed of 100% fiber, which is porous and has good air permeability. It is easy to keep the cloth surface dry and easy to wash.
  4. Non-toxic and non-irritating: The product is produced with FDA-compliant food-grade raw materials, does not contain other chemical ingredients, has stable performance, is non-toxic, has no peculiar smell, and does not irritate the skin.
  5. Antibacterial and anti-chemical agents: Polypropylene is a chemically passive substance, not moth-eaten, and can isolate the erosion of bacteria and insects in the liquid; antibacterial, alkali corrosion, and finished products do not affect the strength due to erosion.
  6. Antibacterial. The product is water-repellent, not moldy, and can isolate the erosion of bacteria and insects in the liquid, and is not moldy.
  7. Good physical properties. It is made of polypropylene spun directly into a mesh and thermally bonded. The strength of the product is better than that of ordinary staple fiber products. The strength is non-directional, and the vertical and horizontal strengths are similar.
  8. In terms of environmental protection, the raw material of most of the non-woven fabrics used is polypropylene, while the raw material of plastic bags is polyethylene. Although the two substances have similar names, they are very different in chemical structure. The chemical molecular structure of polyethylene is quite stable and extremely difficult to degrade, so it takes 300 years for plastic bags to be decomposed; while the chemical structure of polypropylene is not strong, the molecular chain can be easily broken, so it can be effectively degraded , and enter the next environmental cycle in a non-toxic form, a non-woven shopping bag can be completely decomposed within 90 days. Moreover, non-woven shopping bags can be reused more than 10 times, and the pollution to the environment after disposal is only 10% of that of plastic bags.

Advantages and disadvantages of non-woven fabrics

Advantages of non-woven fabrics:

Non-woven fabrics are non-woven fabrics, also known as non-woven fabrics. A sheet, web or batt made of oriented or randomly arranged pure natural cotton and linen fibers bonded to each other by friction, cohesion or bonding or a combination of these methods. The non-woven material has a unique hollow structure, which is convenient for ventilation, formaldehyde-free, waterproof and moisture-proof, and can effectively adjust the indoor air humidity. It is rich, recyclable, and feels friendly and natural. Its filaments have strong weaving tension. When the whole non-woven paper is completely burned, only carbon dioxide and water will be produced, and no toxic gas will be produced. It is a new type of environmentally friendly wallpaper that can be safely attached to various rooms in the home.

Disadvantages of non-woven fabrics:

Because non-woven wallpaper is made of pure natural plant fibers, the lack of other chemical additives means that its form and color options are very narrow, and there are not as many colors as ordinary wall varieties. There is also a big gap in price between non-woven wallpaper and ordinary wallpaper. It is made of pure natural plant fibers. The whole production process is very complicated, so the cost is relatively high, and the price is higher than ordinary wallpaper. expensive.

Application of auxiliaries in non-woven fabrics:

improve the dispersion of filler masterbatch and pigment masterbatch, and obtain good mechanical properties and brightly colored threads; reduce the breakage of non-woven fabrics and the decline of fiber strength; reduce the surface of the thread. The friction coefficient prevents the wire from sticking and surface static electricity; it improves the processing fluidity, and the wire drawing production is stable; the surface of the wire is silky, delicate and bright.

Non Woven Manufacturing Machine Introduce

Basic process flow of non woven manufacturing machine is as flow:

  • Automatic non-woven manufacturing machine basic process flow:
  • Feeding (non-woven coil)
  • Fold
  • Ultrasonic bonding
  • Tailoring
  • Bag making (outlet)
  • Waste recycling
  • count
  • Stacking

The process can has fully automated time only need 1 ~ 2 people to operate. It’s in a certain range of production speed and product size using touch screen operation. Equipped with stepper fixed length, photoelectric tracking, automatic counting. Automatic drilling and other industrial control devices, colleagues in order to further achieve the effect of energy saving. And environmental protection in the production process with the residual material recovery function. The production of bag-making leftover waste automatically collected, help secondary use to reduce labor intensity and increase the efficiency of work.

Guanlong Manufacture Non Woven Fabric Making Machine

Features of Automatic Non-woven Manufacturing Machine

Advanced design technology, production speed, high efficiency, can process different specifications, different shapes of environmentally friendly non-woven bags, with good quality bonding strength and other characteristics.

  1. Non-woven bag edge: pressing the edge of non-woven bag;
  2. Non-woven bag embossing: non-woven bag upper and edge of the pattern pressure;
  3. Non – woven arm belt pressing: through the sleeve automatically pressing arm bag.

Equipment advantages

  1. The use of ultrasonic welding saves the trouble of changing the needle and thread frequently, and the textile can be neatly cut and sealed locally without the traditional suture broken joint. Stitching colleagues also played the role of decoration. Bonding strength can achieve the effect of waterproof embossing clear, the surface is more three-dimensional relief effect, the work speed is fast, the product effect is better and more high-grade appearance.
  2. The use of ultrasonic and special steel wheel processing, sealing edge does not crack does not hurt the edge of the cloth, and there is no rough edge, crimping phenomenon.
  3. No preheating is required during manufacturing and can be operated continuously.
  4. The operation is simple, and the traditional sewing machine operation method is not much different, fully automatic equipment only need to understand the simple operation of knowledge can be directly started.
  5. Low cost 5 to 6 times faster than traditional machines and high efficiency.