Calendering
Calendering is a textile finishing process that involves passing fabric between two or more heavy rollers to smooth and polish its surface. The rollers are typically made of steel or other hard materials and can be heated or cooled, depending on the desired effect. Calendering is used to improve the appearance and texture of fabrics, as well as to enhance their durability, strength, and other performance characteristics.
The calendering process involves feeding a length of fabric through a set of rollers, which compress and flatten the surface of the fabric, giving it a smooth and polished appearance. The rollers can be set at different temperatures and pressures, depending on the desired effect. For example, high pressure and low temperature can be used to create a matte finish, while low pressure and high temperature can be used to create a shiny finish.
There are several different types of calendering, each with its own unique characteristics and applications. One common type is hot calendering, which involves passing the fabric through heated rollers that can reach temperatures of up to 300 degrees Celsius. Hot calendering is typically used to improve the smoothness and luster of fabrics, as well as to improve their dimensional stability and resistance to creasing.
Another type of calendering is emboss calendering, which involves imprinting a pattern or design onto the surface of the fabric using engraved rollers. The engraved rollers can create a wide range of patterns and designs, including geometric shapes, floral motifs, and other decorative elements. Emboss calendering is often used in the production of upholstery fabrics, curtains, and other home textiles.
Calendering can also be used to improve the strength and durability of fabrics, through a process called compacting. Compacting involves passing the fabric through a series of rollers that compress and condense the fibers, reducing the overall thickness of the fabric while increasing its density and strength. Compacting is often used in the production of denim and other heavy-duty fabrics, as it can improve their resistance to abrasion, tearing, and other forms of wear and tear.
In addition to improving the appearance and performance of fabrics, calendering can also be used to add certain functional characteristics to textiles. For example, some types of calendering can be used to make fabrics water-repellent or flame-retardant, while others can improve their resistance to UV radiation or other forms of environmental damage.
In conclusion, calendering is a textile finishing process that involves passing fabric between two or more heavy rollers to smooth and polish its surface. Calendering is used to improve the appearance, texture, and durability of fabrics, as well as to add certain functional characteristics. There are several different types of calendering, each with its own unique characteristics and applications, including hot calendering, emboss calendering, and compacting. When selecting a fabric, it is important to consider the type of calendering that has been used, as this can have a significant impact on its appearance, performance, and overall quality.
Calendering
A process of passing cloths between one or more rollers (or calenders), usually under carefully controlled heat and pressure, to produce a variety of surface effects or textures in a fabric such as high luster, glazing, embossing, and moire.
Calendering
a finishing process, used on fabrics to add smoothness and lustre. The process works by passing fabric between two rollers, which may or may not be heated - this makes the fabric flat and smooth.