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Is 100% polyester fiber good or not?

November 03,2023

Polyester fiber, also known as polyester, is a fabric that many people have heard of but not many understand. In the majority of people's impression, polyester fiber (polyester) is synonymous with chemical fibers and is considered inferior and of low quality. Recently, a famous brand received widespread criticism on the internet for selling clothes made of polyester fiber fabric for nearly a thousand yuan.

However, if we look at the bedding and clothing industries, we can see that many top brands use this material. So what exactly is polyester fiber and is it good or not?


01-What is polyester fiber made of?

Polyester fiber is a synthetic fiber formed by condensing organic diacids and diols. Polyester fiber is the internationally recognized name, while in China it is commonly referred to as polyester, and the "Dacron" used in the 1980s was polyester.


Polyester fiber is a general term for synthetic fibers made from polyester as raw materials. Depending on the different synthetic raw materials and processing techniques, it can be further divided into different types of fibers. The most common ones are polyethylene terephthalate fibers (PET), polybutylene terephthalate fibers (PBT), polytrimethylene terephthalate fibers (PTT), and various modified polyethylene terephthalate fibers (PET). These fibers have gradually improved performance in terms of wear resistance, water absorption, elasticity, etc.

The most common and widely used in daily life is polyethylene terephthalate fiber (PET). When people mention polyester fiber, they usually mean polyethylene terephthalate fiber, which is the fiber we commonly call polyester. Modified polyethylene terephthalate fiber refers to a fiber that has been treated with specific technologies to significantly improve moisture absorption and moisture-wicking effects. We refer to it as modified polyester fiber.

02-Advantages and disadvantages of polyester fiber

Advantages of polyester fiber:

Durable: Polyester fiber is strong, heat-resistant, lightfast, acid and alkali resistant, colorfast, and resistant to washing and sunlight. It does not fade easily and is long-lasting.

Easy to wash and quick-drying: Polyester fiber has a regain rate of 0.4%-0.5%, absorbs little water after being immersed in water, and has low moisture content. Therefore, it dries more quickly after washing compared to natural fibers such as cotton.

Resistant to microbial growth: Polyester fiber has low moisture content and lacks the growth environment for bacteria and mites, so it can effectively inhibit the reproduction of bacteria and mites.

Strong stability: Polyester fiber has elasticity similar to wool. After stretching or compressing, it can almost fully recover. Therefore, when woven into fabric, it is resistant to wrinkles and deformation. As a filling material, it can quickly restore fluffiness and thermal insulation after vacuum compression.

Affordable price: Without modification or brand premium, polyester fiber is relatively inexpensive. A set of bedding can generally be purchased for less than 100 yuan, and a quilt can usually be obtained for around 200 yuan.


Disadvantages of polyester fiber:

Poor moisture absorption and breathability: Polyester fiber has small and few pores, low water regain rate, and is not hydrophilic. Therefore, when using bedding made of this material, it may feel less skin-friendly, not close-fitting, and stuffy and not breathable.

Prone to static electricity: Due to the low water absorption and low moisture content of the fiber, static electricity is easily generated when friction occurs, leading to the adsorption of dust, which affects the user experience. However, after certain technological treatments, such as 3M moisture absorption technology, polyester fiber can also achieve good moisture absorption and breathability, improving comfort. The principle of the 3M moisture absorption technology is to increase the micro-pores and surface grooves that allow internal and external communication of the original fibers, making it easier for moisture to enter the fibers, thereby improving moisture absorption. At the same time, because the surface grooves of the fibers are open, moisture can transfer to the surface of the fabric and dissipate, allowing the fabric to quickly evaporate moisture and maintain a dry and non-sticky feeling.


03-Is 100% polyester fiber good?

The quality of a material is not necessarily determined by its low cost. As mentioned earlier, polyester fiber has high plasticity, is wear-resistant, sun-resistant, washable, durable, stable, and has good resilience. Therefore, many famous brands use polyester fiber in their jackets, suits, skirts, pants, and other products. Through different processing techniques, polyester fiber can also have a soft or silky luster and a smooth touch.

After being modified to improve moisture absorption and breathability, it becomes easy to absorb moisture, refreshing and cool. Therefore, sports apparel brands and summer quilts also incorporate it. After modification, the cost of polyester fiber is no lower than that of natural fibers such as pure cotton.

In the bedding industry, polyester fiber is also commonly used in quilts and quilt covers. As a filling material, it is lightweight, soft, fluffy, and economically affordable, suitable for most families, especially in damp and cold southern regions. When used as a quilt cover, it is strong and durable, without worrying about easily wearing out or pilling.

Therefore, polyester fiber does not necessarily mean low quality and cheapness. Depending on its performance and application, it can have different advantages. However, for close-fitting items such as bedding sets, underwear, and home clothing, it is recommended to choose materials with higher moisture absorption and a closer fit, such as pure cotton, modal, viscose, etc., for greater comfort.


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