The warmth retention performance of chunky knitted fabrics is outstanding among many fabrics, thanks to its unique weaving process and material characteristics.
Chunky knitted fabrics use thicker yarns, which are knitted into coils through knitting technology and then connected into knitted fabrics through stringing. This structure forms many tiny air pockets inside the fabric, which can effectively lock in heat and reduce heat loss, thereby enhancing the warmth retention performance of the fabric. At the same time, during the weaving process of chunky knitted fabrics, the gaps between the yarns are relatively large, which also provides a certain space for air convection and helps to form a heat preservation layer inside the fabric.
Common materials for chunky knitted fabrics include wool, cashmere, cotton, polyester fibers, etc. These materials themselves have certain warmth retention properties. For example, wool and cashmere have good heat retention and moisture absorption, can effectively maintain body temperature and absorb sweat, making the human body feel comfortable and warm. Cotton and polyester fibers have good elasticity and wear resistance, which can increase the durability and wrinkle resistance of the fabric. The selection and matching of these materials further enhance the warmth retention performance of chunky knitted fabrics.
The quantitative evaluation of warmth retention performance is usually measured by indicators such as heat retention rate and heat transfer coefficient. The heat retention rate refers to the percentage of the difference between the heat dissipation without a sample and the heat dissipation with a sample in the heat retention test and the heat dissipation without a sample. The heat transfer coefficient refers to the heat flow through a unit area when the surface temperature difference of the textile is 1°C. Chunky knitted fabrics usually have a higher heat retention rate and a lower heat transfer coefficient due to their unique structure and material characteristics, showing good warmth retention performance.
The warmth retention performance of chunky knitted fabrics makes them particularly suitable for autumn and winter. In cold weather, people need to wear clothes with good warmth retention performance to resist the cold. Chunky knitted fabrics not only have good warmth retention performance, but also have a soft and comfortable feel and rich texture changes, which can meet people's dual needs for fashion and comfort. Therefore, chunky knitted fabrics have been widely used in clothing design in autumn and winter.
Although chunky knitted fabrics have good thermal insulation performance, breathability is also one of the important indicators for evaluating fabric performance. Too thick fabrics may affect breathability, causing the human body to feel stuffy and uncomfortable. Therefore, when designing chunky knitted fabrics, it is necessary to balance thermal insulation performance and breathability to ensure wearing comfort. By adjusting parameters such as yarn thickness and weaving density, the breathability of the fabric can be improved to a certain extent.
In order to further improve the thermal insulation performance of chunky knitted fabrics, a variety of methods can be adopted. For example, use higher quality thermal insulation fiber materials such as microfiber, thermal insulation polyester fiber, etc.; adopt a multi-layer structure design to increase the thermal insulation layer of the fabric; post-process the fabric, such as coating, brushing, etc., to improve its thermal insulation performance. The application of these methods can be selected according to specific needs and budget.
In practical applications, chunky knitted fabrics are widely used in various thermal clothing and household items. For example, sweaters, scarves, hats and other common clothing in autumn and winter are usually made of chunky knitted fabrics, which are both warm and fashionable. In addition, chunky knitted fabrics are also used to make bedding, pillows and other household items to provide people with a warm and comfortable home environment. These practical application cases fully demonstrate the excellent performance of chunky knitted fabrics in terms of thermal insulation.
Chunky knitted fabrics have good thermal insulation performance due to their unique structure and material characteristics. Through quantitative evaluation, seasonal applicability analysis, balance between breathability and thermal insulation performance, and research on improvement methods, we can better understand and apply chunky knitted fabrics to provide people with a warmer and more comfortable wearing experience.
