what are knit fabrics

1. Definition and basic concept of knitted fabrics
Knitted fabrics are fabrics made of yarn through knitting. It is obviously different from woven fabrics. The coil structure of knitted fabrics makes it uniquely elastic and stretchable. For example, many of our common T-shirts, sportswear, etc. are made of knitted fabrics.

2. The production process of knitted fabrics
1. The basic principle of knitting
- Knitting is the process of bending yarn into coils through knitting needles and connecting the coils to each other to form fabrics. This process can be done with hand knitting tools such as knitting needles, but in large-scale industrial production, it is done by knitting machines. The knitting needles on the knitting machine move according to a specific pattern, continuously weaving the yarn into coil structures of various shapes.
2. Different knitting methods
- Weft knitting: Weft knitting is one of the most common knitting methods for knitted fabrics. In the weft knitting process, the yarn is fed into the knitting needles along the transverse direction (weft direction) of the fabric, and the knitting needles weave the yarn into coils one by one, and these coils are connected to each other to form fabrics. Weft knitted fabrics are soft and elastic, and can be easily made into various complex patterns and designs. For example, most common knitted sweaters are made using the weft knitting process, which can form a rich texture effect on the surface of the fabric.
- Warp knitting: Warp knitting is the process of feeding the yarn into the knitting needles along the longitudinal direction (warp direction) of the fabric for knitting. Compared with weft knitted fabrics, warp knitted fabrics have a more stable structure, better dimensional stability, and higher production efficiency. Warp knitted fabrics are often used to make products such as underwear and mosquito nets. The pattern of warp knitted fabrics usually presents a longitudinal, regular stripe or plaid effect, which is determined by the characteristics of its warp knitting.

III. Characteristics of knitted fabrics
1. Elasticity and stretchability
- Due to the coil structure of knitted fabrics, it has good elasticity and stretchability. This makes knitted fabrics very suitable for making clothing that needs to fit the body curve, such as sportswear. When athletes are engaged in various sports activities, the elasticity of knitted fabrics can ensure that the clothing does not restrain the body's movement too much, allowing athletes to stretch their limbs freely.
2. Softness and comfort
- The coil structure of knitted fabrics makes it soft and comfortable when in contact with the skin. This is one of the reasons why many underwear, pajamas and other close-fitting clothing choose knitted fabrics. For example, cotton knitted underwear, the soft fabric can bring a comfortable wearing experience to the wearer and will not cause skin discomfort.
3. Breathability
- There are certain gaps between the coils in the knitted fabric, which are conducive to the circulation of air, so that the knitted fabric has good breathability. In the hot summer, wearing a T-shirt made of knitted fabric, the skin can breathe, and sweat can evaporate more easily, making the wearer feel cool and comfortable.
4. Common types of knitted fabrics
1. Cotton knitted fabrics
- Cotton knitted fabrics are knitted fabrics made of cotton as raw material. It has the advantages of strong moisture absorption, comfortable wearing and good breathability. Cotton knitted fabrics are one of the most common fabrics in daily life and are widely used in the production of various clothing such as T-shirts, underwear, and home clothes. However, cotton knitted fabrics also have some disadvantages, such as easy shrinkage and wrinkling.
2. Polyester knitted fabric
- Polyester knitted fabric is made of polyester fiber. Polyester fiber has the characteristics of high strength, wear resistance, and not easy to deform. Polyester knitted fabric is often used to make sportswear because it can maintain the shape of the clothing and can also dry quickly after washing. For example, some professional sports running clothes will use polyester knitted fabric, which can withstand high-intensity sports friction and can quickly recover after sweating.
3. Wool knitted fabric
- Wool knitted fabric is woven with wool fiber. Wool has good warmth retention, so wool knitted fabric is very suitable for making winter clothing, such as sweaters, scarves, etc. Wool knitted fabric has a soft texture, elasticity, and a unique luster. However, wool knitted fabrics need special attention when washing and maintaining because wool is easy to shrink and felt.
5. Application fields of knitted fabrics
1. Clothing field
- In the field of clothing, knitted fabrics are widely used. In addition to the T-shirts, sportswear, underwear, sweaters, etc. mentioned above, knitted fabrics are also used to make dresses, pants, socks and other clothing. Different types of knitted fabrics are used in the production of clothing of different styles and functions according to their characteristics. For example, knitted fabrics with good elasticity are suitable for making leggings, and soft and comfortable knitted fabrics are suitable for making home clothes.
2. Home furnishings field
- Knitted fabrics are also widely used in home furnishings. For example, knitted blankets are soft and comfortable, giving people a warm feeling. There are also knitted sofa covers, cushions, etc., which can not only decorate the home, but also provide a comfortable use experience.
3. Medical field
- In the medical field, knitted fabrics also have special applications. Some medical bandages use knitted structures, which can better fit the body parts and have a certain elasticity, which is conducive to the bandaging and healing of wounds. In addition, some medical protective products, such as masks, may also use knitted fabrics to improve the comfort of wearing.