Modified Fiber is also called functional fiber. It is obtained by imparting new properties to natural fibers, like hygroscopicity, dyeing, antistatic, flame retardant, etc.
Usually, the clothes people wear are woven from fibers. And the raw materials may be natural or synthetic materials. But the properties of raw materials are not so perfect. For example, it may have poor dyeing properties. So fiber modification is essential. Traditional modification methods include chemical, physical and biological ones.

Fiber Modification Methods

1 Physical Method
Physical modification improves the properties of fibers by changing the aggregated structure, morphological structure, and surface components of the fibers. At the same time, it remains the main structure of polymer macromolecules.
2 Biological method
This is a new modification method that only appears in recent years. It uses biotechnology, such as genetic engineering and biosynthesis, which can improve the properties of existing fibers and create some brand new “biofibers”. This is the synthesis of chemistry and biology.
3 Chemical method
The chemical modification changes the structures of macromolecules through the reactions of polymers. The effect is durable, but the change will also lead to changes in a series of fiber properties.

Common Modified Fiber Types

1. High Shrinkage Fiber
High shrinkage fiber is a new type of synthetic fiber. Fibers with a shrinkage rate of about 20% in boiling water are called ordinary shrinkage fibers. And fibers with a shrinkage rate of 35% to 45% in boiling water are called high shrinkage fibers. At present, high shrinkage acrylic fiber and polyester fiber are the two common types. We provide raw material of high shrinkage fiber. For more details, please refer to

2. Self-stretching Filament
It refers to the characteristic of self-elongation during heat treatment. Its self-elongation can reach 8-15%. The self-stretching filament is compounded with high-shrinkage and low-shrinkage filaments to form a high-shrinkage composite filament. And the shrinkage difference between the components can reach 30-45%.

3. Easy DyeingFiber
Easy dyeing means that it can be dyed with different dyestuff. And it enjoys the characteristics of bright color, complete color spectrum, uniform color tone, good color fastness, and mild dyeing conditions. Polyester is the most difficult fiber to dye among regular synthetic fibers. The common easy dyeing synthetic fibers include cationic dyeable polyester, normal temperature, and pressure cationic dyeable polyester (ECDP), acid dyed polyester, acid or basic dyed polyester, acid dyed acrylic fiber, dyeable nylon fiber, cationic dyeable nylon fiber, etc. Hubei Decon can supply CDP and ECDP chips,

4. Absorbency Fiber
Absorbency fibers have the ability to absorb moisture and transport it to adjacent fibers. Compared with natural fibers, most synthetic fibers have poor hygroscopicity, especially polyester and polypropylene fibers. To improve the hygroscopicity and comfort of synthetic fibers, chemical and physical modification methods can be used to improve the wetting and expansion properties. Or porous fibers are produced to form a micro-pore system inside to increase the moisture absorption capacity. Water-absorbing and hygroscopic fibers are mainly used in functional underwear, sportswear, training clothes, sports socks, etc. If you want to produce this fiber, our EDDP chip can make it. For more information, please click

5. Mixed Filament
Mixed filaments refer to multifilaments composed of monofilaments with different geometrical or physical properties. The purpose is to improve the natural feel of synthetic fibers. There are several types of commonly mixed yarns, such as additional shrinkage, special shape, different deniers, and multi-differential mixed fiber.