Classification and Uses of Spun Polyester Thread

What is Spun Polyester Thread?

Generally speaking, spun polyester thread can be divided into three categories: large, medium, and small chemical fibers:

Large Chemical Fiber

This type of spun polyester thread is produced through direct spinning of melt or PET slicing. It is characterized by its bright-colored fabric and strong stability, with relatively fewer fabric defects.

Medium Chemical Fiber

Unlike large chemical fiber, it does not use the direct spinning process but instead uses either PET slicing or recycled PET. The price and quality of medium chemical fiber are between those of large and small chemical fibers. Some factories produce this type of fiber in large quantities to ensure fabric quality while saving costs.

Small Fiber

This type exclusively uses the process of spinning with recycled PET, and its price and quality are relatively lower. It is often used to produce textiles that do not require high quality or as auxiliary materials (fillers). The article mentions PET slicing, a process that generally produces spun polyester thread without defects, with relatively uniform thickness, a smooth and soft texture, and good strength. The small chemical fiber of spun polyester thread is not produced in this way, so its various physical indicators are not comparable to those of medium and large chemical fibers.

Uses of Spun Polyester Thread

Spun polyester thread can be mainly classified into three categories based on its use: for spinning and making threads (77%), for filling (6%), and for non-woven fabrics (17%).

Spinning and making threads include cotton spinning and wool spinning. Cotton spinning and wool spinning refer to the spinning of cotton-type and wool-type fibers respectively. Cotton spinning mainly includes pure polyester spinning, polyester-cotton blending, polyester-viscose blending, and the production of spun polyester thread sewing threads.

Filling mainly involves using short fibers as filler materials for home furnishings and clothing insulation, such as in bedding, padded jackets, sofa furniture, plush toys, etc. Filling fibers are mostly hollow spun polyester threads.

Non-woven fabric is an extension of the use of short fibers and has developed rapidly in recent years. Non-woven fabrics have a wide range of applications. For example, spunlace nonwoven fabric is mainly used in wet wipes, medical fields, etc., while geotextiles, synthetic leather base fabrics, and roofing felt base fabrics are primarily used in engineering fields.