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Introduction Description of Spunbond fabric

As the first hyper nonwoven in the world, Yazd Lai has the most complete basket of spunbond with medical, health, industrial, packaging, etc. applications.

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Spunbond PP

Non-woven fabrics consist of continuous filaments produced during processes such as extrusion, stretching, web formation, and bonding. Among the prominent features of this product are high strength and proper uniformity.
• Specifications :
– Weight 8-150
– Ability to produce in two ways, water absorption and water repellency
– Very favorable mechanical properties
– The maximum width of fabric production is 420 cm
– In various colors according to the order

Composites of Spunbond

The combined fabrics of spunbond and Mellat Bloun are produced simultaneously and online by placing the Mellat Bloun’s layers between the Spunbond’s layers. The most prominent features of the shoes mentioned above are high impermeability against liquids, breathability, and the ability to separate very fine solid particles.
Specifications:
– Grammage 13-90
– Ability to be impervious to liquids and the possibility of producing a layer with pores with the required pore size
– Ability to adjust air permeability (Air Permeability)
– Resistant to chemicals (Chemical Stability)
– The maximum width of the fabrics is 445 cm
– In all kinds of colors according to the order

laminated fabrics

Spunband laminated fabrics are very effective for preventing the virus from passing and are necessary for areas with high risk and contamination. Yazd Lai Group can supply laminated spunbonds with different weights.

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Introduction of spunbond fabricCommunity Verified icon

What is spunbond? What are its advantages and functions? What is the suggested price for this type of fabric? What points should we prioritize when buying these products? In the following section, we will provide you with useful general information. Stay with us.
Spunbond is made of propylene. Because of its good quality and efficiency, it has attracted a lot of attention and has been used in various cases. Extruder machines are used in the production process of this type of product. This device can reduce the thickness of the fabric as desired.
. You can finalize the online purchase of Spanband right now. Complete information about the brands of this product is included. Buy great quality at a reasonable price with us. These fabrics are often referred to as disposable and non-woven fabrics. A press makes this type of fabric instead of yarn fibers. According to the standard, they are produced in different sizes and weights. Most people benefit greatly from the functionality of these types of fabrics throughout the day without even knowing it exactly.

With us, you can benefit from wholesale and retail purchases of spunbond online and receive the desired product as soon as possible. Your trust is our capital, so we care greatly about choosing the products on our sales list.

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Spunbond and Industry

The spunbond is used in various centers due to its favorable characteristics and excellent quality. You can easily be sure of its quality. To be satisfied with its benefits in multiple uses, you should prioritize high-quality samples. Among its most important uses, the following can be mentioned:
A) medical and health expenses
B) Agricultural uses
C) Extensive use in the automotive industry
D) road industry and, of course, construction
E) Industrial strainers
F) Packaging industries
G) Environment
H) Miscellaneous items
Companies producing this type of product are trying to consider different manufacturing standards to increase the final quality and efficiency of their products. Due to this, the requested fee is also different for other samples. You can finalize your order online for the wholesale and retail purchase of Spunbond right now without wasting time.

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Technical characteristics of the productCommunity Verified icon

Spunbond has many advantages, so it has been used in large quantities all these years. The high consumption of this product has also increased its production and sales. These fabrics are different in terms of various factors. The following are among the most important factors that distinguish them.
Weight (grams)
Width
Coloring
· Length of each roll
Although the characteristics of Spunbond fabrics can be different according to the production brand, various advantages can be considered in general. Low-quality fabrics could be more effective, and their use in other areas can cause many problems. For this reason, it is emphasized to choose reliable and reliable centers. The following are the most important advantages of these fabrics:

· hydrophobic
· Hydrophilic
· Antibacterial
· Anti-UV
· Subtlety

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Buying all kinds of Spunbond

To buy spunbond fabric, you can contact the experts of Yazd Lai company using the contact numbers on this page, and after consulting, prepare the amount of spunbond fabric you need. Complete information about the specifications of each product is included. As one of the stores active in the field of selling different types of sewing accessories and fabrics, we have been able to serve you by providing excellent quality. Among the most important advantages of buying from us are the following:
• Excellent quality, reasonable price, online order
• Major shopping
• Retail purchase
• Immediate receipt
We are proud that, by providing excellent services and original quality, we have been able to be the first choice of your dear ones in all these years. By choosing excellent quality, you can be sure of its efficiency. Various companies are active in the production and distribution of Spunbond. Of course, many profit seekers are not left behind, so it is emphasized that you choose reliable centers to be satisfied with their quality. Any carelessness, especially in major purchases, can cause many losses.

Price Tags

Spunbond prices can vary according to different parameters. To provide the best service, we offer a reasonable purchase price. Various factors can affect its final price, the most important of which are the following:
• Quality
• Type
• Size
• Performance
• Construction standards
Remember that its price is a certain amount, so whenever this type of product is sold to you at a lower cost, be suspicious of its quality. No discount is without reason.

Dos and Don’ts of Spunbond

Based on your existing needs, you can choose the right option. If requested, you can also choose patterned samples. Workshops producing this type of product consider special conditions for production according to their consumption area. By buying from reliable stores, you can be sufficiently satisfied with its efficiency. To make more profit, a reputable company will never question its reputation by selling inferior products.
One of the most important advantages of shopping online and over the phone is that you will no longer need to waste time. Rather, you can easily complete your purchase process and buy the desired product. For major purchases, you can also benefit from the advice provided by our experts. We are here so that you can easily buy the desired product at the right price. The experts of our sales department have serious reviews about the quality and efficiency of the product.

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Production steps of Spunbond

۱- Raw materials

Many polymers, including polypropylene, polyester, polyethylene, polyamide, polyurethane, etc., produce spunbond. Among the many polymers, isotactic polypropylene (pp) is the most widely used in nonwoven spunbond products because it is relatively expensive (not too expensive) and has the highest efficiency. This polymer also has the lowest specific weight and the highest adaptability for nonwoven products. Polyester (PET) has the ability and properties of fabric (stretchability, modulus, and thermal stability). It is more suitable for those polypropylene products used in almost all nonwoven product production technologies. However, it is more difficult and expensive to produce polyester than polypropylene.

۲- Production of SpunbondCommunity Verified icon

The production of Spunbond consists of several integrated stages: polymer feeding, extruder (pressure casting), metering pump, mold block assembly, fiber spinning, stretching and deposition system, collecting belt, bonding, and twisting area. (Pay attention to Figure 1.)

نمودار شماتیک (طرحواره) تولید اسپان باند

The figure shows a schematic diagram (schema) of the production of spunbond Hills.

۲-۱ Pressured casting

When the desired polymer is transferred to the injection molding machine, it is melted by heat and mechanical action. This polymer is mixed in the machine with stabilizers, additives, masterbatch color, resin modifiers, and other additives. The mixed polymer is transferred through the twist and melted by its heat, then moves into the plate. The device requires heat that increases gradually. The melting pressure and temperature must also be controlled.

شکل دو شماتیک دستگاه ریخته گری فشاری را نشان میدهد

۲-۲ metering pump

The melted polymer is transferred to a filter or strainer, and foreign particles such as metals, small polymers, and other materials are separated. Filtering is very important because unfiltered polymers may cause problems such as clogging of pores and splitting or breaking in fibers.

After filtering, it is transferred to a metering pump, which plays an important role in the accurate volume flow of the molten polymer. Once the polymer is melted and becomes a liquid with a uniform temperature, it must be stored in a set of molds. The metering pump must be insulated from all sides. The heating temperature is between 40 kg/h and 100 kg/h, and the speed is generally between 10 rpm and 40 rpm.

۲-۳ packages of spinning yarn in the production of Spunbond

The mold block set (spinning package) is one of the important parts of extraction, which includes the polymer feeding distributor and spinning. The distributor of polymer feeding must control the uniformity of this distribution and the uniformity of temperature to create a balance between the flow of melted polymer and its storage in the set of molds. The molten polymer is transferred from the feed distributor to the spinning yarn.

The spinning thread is a metal piece with thousands of apertures or holes; this part’s design and construction affect the threads’ uniformity. For mass production of yarns, several groups of spinning mills called blocks or banks are placed next to each other to produce suitable fibers on a large scale. In commercial or commercial production, two or more blocks are used in a row to increase fiber coverage.

In producing two different types of fibers with different melting points, they must be melted separately and finally joined together in the spinning package or metering pump. Normally, the spinning package’s design is such that the temperature is 300 to 400 degrees Celsius. The internal pressure can withstand the entire mold plate, and its temperature must be uniform.

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۲-۴ cooling/weakening air

۴-۲ Cooling air/weakening of the molten polymer exits through the holes. As the removed fibers pass through the chambers, cool air is in direct contact with them to cool the molten fibers until they freeze. Cooling can be done by blowing air either by a one-way system or a two-way system, but if the cold air supply box is internal and two-way, it cools in a shorter time interval than the cooling box that has a flow in the opposite direction and is one-sided.

In weakening the fibers by high-velocity air, they are transported into a conical channel, which accelerates and weakens or stretches the fibers individually. Weakening causes the molecular orientation of the polymer to form continuous fibers and the thickness of the fibers to reach the desired level. The speed range of the spinning process varies from 1000 to 8000 meters per minute and depends on the characteristics of the polymer, the productivity of the process, etc. For example, polypropylene (pp) is usually spun around 2000 meters per minute, polyamide around 4000 meters per minute, and polyester around 6000 meters per minute. Other factors, such as temperature and humidity, must be controlled when using air cooling. Air is the most common attenuation method; rollers and electrostatic (static electricity) are also used for attenuation.
Generally, there are three spinning methods to produce Spunbond: Wet spinning, dry spinning, and melt spinning. Melt spinning is more widely used to produce Spunbond and has several systems. Riefenhauser GmbH of Germany developed the Ricoh Fill system.

How to form a fabric network

The filaments are deposited on the moving belt. An air gun that uses high-pressure air is used to move the threads, and then, by creating a vacuum under the belt, the threading of the fabric is helped. To make the most uniformity of strands, the strands are separated by mechanical force, aerodynamic force, or electrostatic charge before reaching the belt. Other processes, such as mechanical oscillation, electrostatic charging, slot attenuators, airfoils, full-width drawing rolls, and centrifugal foaming, are used for separation and drawing.

When producing Spunbond using the mechanical swing method, the strands are separated by mechanical or aerodynamic forces. Figure 4 shows the method and apparatus registered by Du Pont in 1967 for the production of nonwoven nets nonwoven. Figure 5 shows the process and apparatus for the production of nonwoven webs of filaments, patented by Hoechst in 1979.

As shown in Figures 4 and 5, the strand flow is oscillated by the damping gun’s mechanical or pneumatic oscillation for uniform separation of strands. Otherwise, the strand itself becomes bunched.

نوسان سازهای رشته مکانیکی

Figure 4. Mechanical and pneumatic string oscillators by Bundy, R.W. (1967)

دستگاه توزیع انحراف چرخان

Figure 5. Rotary deflection distribution device

شارژ رشته ای تریبوالکتریک

Figure 6. Triboelectric string charging

شارژ رشته

Figure 7. Filament charging

Debs used two rows of narrow slot attenuators that cover the entire device width.

As you can see in Figure 8, one row of attenuators has slots across the grid, while the other row has slots in the direction of the device. The two slots oscillate in different directions, and the threads are placed in a zigzag pattern on the surface of the moving belt, so this fabric has the property of balance in both directions.

slot attenuators

شکل ۸. slot attenuators

Create a link

Many methods can be used to create a bond in the Spunbond T process, such as hydroentangling bonding, needle punching bonding, M thermal bonding, chemical bonding, etc.

Although hydroentangled bonding is more complex and expensive, this technology can create very different continuous filament structures. It also helps to increase the tensile strength of fabrics, allowing them to be processed faster and more efficiently.

Needle punching bonding provides more comfortable and voluminous fabrics than thermal or chemical bonding. This technology passes barbed needles rapidly through a moving mesh screen.

Thermal bonding is more common and more economical than chemical bonding. In regional thermal bonding, many parts are bonded together and are primarily based on temperature. Point-thermal bonding connects small areas and uses temperature and pressure to effect fiber fusion. This mode is more flexible because the fibers remain almost free between the point links.

In the spun bond process, chemical bonding is uncommon and used less.

Rolling and packing

After being connected, Spunbond fabrics undergo other processes such as embossing, resin work, flame retardant, rewet material, dyeing, printing, and anti-acetate.

In the cutting section, the fabrics are marked to provide fabric rolls with exact dimensions. Then, the fabrics are rolled, packed, and shipped.

Test methods in Spunbond production

A standard test means designing a test in which the product reaches the desired result. This test can be a detailed observation of the fabric or its technical examination. Several national and international standard organizations are important in conducting and checking standard testing. These standard organizations include the following.

  • ISO (International Organization for Standardization)
    ASTM (American Society for Testing and Materials)
  •   DIN  Deutsches Institut für Norming
 
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How to produce Spunbond fabric

Spunbond fabric is known as one of the most important fabrics in the market. Of course, this fabric has other names, such as disposable fabric, needle layer, etc. Getting to know the production process of this fabric can be interesting for you, too; that’s why we have gone to it. In the production process of this fabric, the raw materials are first placed in an extruder machine. After the melting operation is done on the raw materials of this fabric, the required polypropylene is placed in a set of syringe-like needles.

مطلب مرتبط: اسپان لس

In the next step, according to the pressure applied by the extruder, the molten materials are ejected from the syringe-like needles in the form of very thin fibers. Finally, the extracted fibers become filament strings. After the filaments are placed at a lower temperature and are cooled, they are aerodynamically placed on the conveyors of the production line and stretched. Finally, the span layers are produced and available to people after all these steps.

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Color and print on this fabric

Spunbond fabric is produced in different colors, and this is one of its most important features. This product’s variety of colors and prints has allowed other people to buy and use their favorite spun fabrics according to their tastes and interests. Of course, you can purchase plain spun fabrics without any specific color and design and print your desired design yourself.
Printing is usually done on spun fabrics in two ways: flexo printing and silk printing. Compared to silk, flexo printing is faster and cheaper, and economically, it seems to be more affordable. But if the quality of the products is important to you, it is better to go for silk printing, which prints the colors better on the fabric.
Of course, if you want to print on spun fabrics in low quantities, it is better to use silk printing because, despite the high quality in low quantities, it is similar in price to flexor printing.

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Advantages of using Spunbond fabric

The first important advantage of these fabrics is that they are produced in different weights. You can make these fabrics with the property of being water-loving and observe the property of being water-repellent in them during production. Among other features and advantages of these fabrics, their antibacterial properties have made them useful for medical and health purposes.
Spun fabrics are such that they can be cut in different widths according to the wishes of the customers, and they do not have any problems in this regard.

Be careful that the maximum production width of these fabrics is 3200 mm. The fabrics are produced with favorable mechanical properties and can have many applications. When you want to buy Spunbond, you will pay a much lower cost than other fabrics, and the interesting thing is that it is easier to recycle this product than other products.
Spun fabrics are anti-vivo. This feature makes them stable against the sun. All the advantages we have presented to you have made spun fabrics have many uses in different fields in our country over the past years.

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اهمیت استفاده از این پارچه در تولید ماسک

It might be interesting for you to know that spunbond is the most used fabric in the production of masks in our country. Balloon nation mask, three-layer mask, and various other types of masks are made in a combination of spunbond fabrics. Note that you can only name a mask as a three-layer spun mask when all its layers are made of spun fabric. To identify the span mask, you should pay attention to several points. Be careful that this fabric is mainly used for the outer and sparingly in the inner layers.
Masks made of spun fabric show elasticity when pulled on both sides. This causes them to rupture after the initial resistance they show. Note that the span mask shows little heat resistance and quickly catches fire. According to our explanations, you can identify the span mask and buy and use it.

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The use of Spunbond in masks

The use of Spunbond in masks

Even though the Spunbond fabric has shown that it can show high performance in the outer layers of the mask, unfortunately, it has not been able to have good applications in the middle layers. It failed the air passage test and has yet to obtain good results. It is better to look for masks whose outer layer is made of this fabric instead of looking for a three-layer spun mask. Of course, you can use the same three-layer span mask in environments where the risk of contracting viruses such as Corona is lower, but it does not seem wise to use this product in high-risk environments. For example, this mask can help you deal with dust.

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