Polyester is a synthetic fiber that’s typically attained from petroleum. This fiber is one of the world’s most popular filament fibers and it is used in thousands of different consumer and manufactured products. Ethylene polyester is the most produced form of polyester fiber. Depiction of polyester according to F.T.C-
Polyester filament are chemically formulated of at least 85% by wt. of an ester of a substituted aromatic carboxylic acid, including but not confined to substituted Terephthalate units and Para substituted hydroxyl benzoate units.
Polyethylene Terephthalate, the repeating unit of the polyester polymer with a degree of polymerization of 115-140 units (i.e. n= 115-140).
structure of Polyester Polyester Fiber Manufacturing ProcessThe procedure of creating polyester filament begins with the reaction of ethylene glycol with dimethyl terephthalate at extensive heat. This composition results in a monomer.
Further addition of dimethyl terephthalate with the resulting monomer to create a polymer.
This molten polyester polymer is extruded from the reaction chamber in long stripes and these stripes are allowed to cool and dry and then they are broken apart into small pieces.
Polyester basically go through melt spinning system. The resulting chips are then melted again to create a honey like substance which is extruded through spinneret to create fibers. The fibers are then transferred to winding machine and produce a sliver that looks like noodles. Then the slivers are taken to the creel stage. This creel is the first stage of drawing section. Into the roller of drawing machine, the slivers are drafted in several steps by using chemicals like lubricant and titanium dioxide. Then we get 1.4 denier primary fiber. This primary fiber automatically runs into the dryer to get moisture free smooth fiber. Moisture free primary fiber automatically transfers to the cutting machine and cut it into desired length as per the requirement of the buyer. After cutting we get the moisture free smooth polyester staple fibers.
1. Fibers are extremely strong.
2. Very durable.
3. Resistant to most chemicals.
4. Stretching and shrinking.
5. Wrinkle resistant.
6. Mildew and abrasion resistant.
7. Hydrophobic in nature.
8. Quick drying.
9. Easily washed and dried.
10. Retains its shape
11. Good for making outdoor clothing for harsh climates.
Polyester fiber is used alone or blended with wool, cotton, flax and other fibers provides-
1. An extensive range of hard-wearing.
2. Comfortable.
3. Easily looked after garments.
4. High dimensional stability.
5. Wrinkle resistance.
Use of polyester in apparel-
1. Reduces production costs but it also decreases the comfort ability of apparel.
Use of polyester also covers-
1. Curtains.
2. Floor coverage.
3. Laundry equipment.
4. Conveyor belt.
5. Ropes.
6. Net.
7. Sail cloth.
8. Sewing thread.
9. Electrical insulation.
While some forms of polyester are biodegradable, most of them are not biodegradable and polyester production and use contribute to pollution around the world.
As a Printed Polyester Fabric Manufacturer, share with you. Printing process refers to a process of printing various patterns on various textiles through dyes or pigments. Polyester fabric is the most common clothing fabric in our lives. Many friends want to know what polyester fabric printing process is, so I will take you to find out below.
Printing Polyester Fabric
Polyester fabric printing process method
Polyester fabric is printed with disperse dyes. After drying, it can be fixed by high temperature and high pressure steaming method and hot melt method.
High temperature and high pressure steaming method
The high-temperature and high-pressure steaming method is steamed in a closed steaming box at a high temperature of 125-135°C for about 30 minutes. The degree of superheating of the steam in the steaming box is not high, close to saturation, so the fiber and color paste absorb more moisture. The swelling is better, which is conducive to the transfer of disperse dyes into the fiber. At the same time, due to the high heat content of the high-pressure saturated steam, the temperature of the fabric is increased quickly and the temperature is relatively constant, which is conducive to dyeing. Compared with other methods, the fixation rate is Higher.
The sublimation temperature of disperse dyes is mostly much higher than 135t. Therefore, the problem of sublimation staining will not occur during fixation, so dyes with lower molecular weight and lower sublimation temperature can also be used. The range of dyes is wide, the fabric feels good, and it can be applied to fabrics that are easily deformed. However, this method is mostly batch production, suitable for small batch processing, and the steaming process must be strictly controlled. If the temperature is lower than 120'C for printing, the amount of color is insufficient. If it is higher than 150t, because the dye is hydrolyzed, especially for color matching, it is easy to produce color difference. The steaming time should be about 30min. If it is too short, it will not reach the highest fixation rate.
Hot melt method
The hot-melt method has basically the same fixation mechanism and method as hot-melt dyeing. The hot-melt temperature is 180-2201C. In order to prevent the dye from contaminating the white ground during sublimation, it also requires a higher fixation rate. Strictly control the nature of dyes used in printing.
The uniformity of printing mainly depends on the uniformity of fixation, and the uniformity of fixation depends on whether the temperature and the flow rate of hot air sprayed to different parts of the fabric are uniform. Because the hot-melt method is used to fix the color under tight dry heat conditions, which has an adverse effect on the feel of the fabric, the hot-melt method is not suitable for elastic polyester fabrics and knitted polyester fabrics.
Our company also has Printing Polyester Fabric on sale, welcome to contact us.
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