In the production of non-woven fabrics, what is the difference between large chemical fiber, medium chemical fiber, and small chemical fiber?

Large chemical fiber: CHEMICAL FIBER 

Staple fibers spun with PET chips or melt-spun directly have the characteristics of good color, large batch number, stable strength, few defects and good spinnability.

Small chemical fiber: SMALL CHEMICAL FIBER
Using PET backspinning, the price and quality are uneven, suitable for national conditions, and exported to some markets and areas where the quality requirements are not too high (such as fillers, etc.)

Same point:

"Big Chemical Fiber", "Medium Chemical Fiber" and "Small Chemical Fiber"

First of all, this is a popular saying in the market, and there is not necessarily an accurate definition.

All three are for polyester staple fiber (polyester staple fiber), and other chemical fiber product categories are not yet included.

The difference is:

simply put:

"Large chemical fiber" Generally, large-scale chemical fiber companies directly produce fibers with better quality slices. The technology is more advanced, and the equipment is mostly imported. The product quality index is ideal, stable, and the spinnability is relatively high.

On the contrary, many small chemical fibers on the market currently use slices made from recycled raw materials such as coke bottles. At the same time, the process is relatively backward, the equipment is mostly domestic, and the fiber quality is obviously affected, but the cost is much lower than that of large chemical fibers, and some quality requirements Low-grade yarns can be mixed with small chemical fibers.

1. "Big chemical fiber" products refer to polyester staple fibers spun using relatively sophisticated imported and domestic production equipment, using polyester melt direct spinning method or polyester chip indirect spinning method. Since the raw materials used in the "Dahua Fiber" products are basically qualified grades, the quality indicators of their regular products are superior. "Big chemical fiber" polyester staple fiber is the leading raw material for the cotton textile industry. The "big chemical fiber" production equipment is equipment for eating "fine grain".

2. The vast majority of the production equipment used for "China Chemical Fiber" products and "Small Chemical Fiber" products are produced by domestic small chemical fiber machinery factories. This type of production equipment has a large distance from the production equipment used by "large chemical fiber" in terms of scale and quality, so the products produced by such equipment and the products produced by "large chemical fiber" are also obvious. Quality difference.

Because of this, the "medium chemical fiber" and "small chemical fiber" equipment generally use polyester chips and foams after processing such as polyester cutting and recycling as raw materials for polyester staple fibers. The production equipment for "Middle Chemical Fiber" and "Small Chemical Fiber" is equipment for eating "coarse grains".

3. The equipment used by "Medium Chemical Fiber" and "Small Chemical Fiber" is basically the same.

The main difference between them is that the "China Chemical Fiber" generally uses foreign products produced by regular polyester chip production plants and well-treated imported polyester recycling bottles.

The raw materials used for "Small Chemical Fiber" are basically general recycled polyester bottle flakes, polyester recycled waste silk and waste materials, and polyester bubble materials.

Due to differences in investment in production equipment, differences in raw material prices and differences in product quality, from the current prices, under normal circumstances, "large chemical fiber" polyester staple fiber products and "medium chemical fiber" polyester staple fiber products differ by 2000 yuan / The difference between polyester staple fiber products of “China Chemical Fiber” and polyester staple fibers of “small chemical fiber” is about 1,000 yuan / ton.

Product Usage

The application scope of "big chemical fiber" products is relatively wide.

In some applications, "Middle Chemical Fiber" products can replace "Big Chemical Fiber" products to provide greater profit margins for downstream products.

"Small chemical fiber" products are generally used in areas where the quality of short fibers is not high, and produce products with lower grades (thicker yarns, sprayed cotton and filler materials than 30s).

"Medium chemical fiber" and "small chemical fiber" polyester staple fiber products have relatively small investment in equipment, relatively low raw material prices, and can be used in place of "large chemical fiber" products in some application areas. Product manufacturers are welcome.