Analysis Of The Causes Of Towel Shrinkage

Beach towel shrinkage is a phenomenon in which the length or width of a textile changes in a certain state after washing, dewatering, drying and other processes. The degree of shrinkage involves a wide range of different types of fibres, the structure of the fabric, the different external forces to which the fabric is subjected during processing and so on. Then the fabric shrinkage is how to produce?

A, beach towel fabric shrinkage phenomenon of the reasons

1. Production process: fiber in the spinning, or yarn in the weaving and dyeing, the fabric of the yarn fibers by external forces and elongation or deformation. At the same time, the yarn fibres and fabric structure produce internal stress, in the static dry relaxation state, or static wet relaxation state, or in the dynamic wet relaxation state, full relaxation state, the release of different degrees of internal stress, so that the yarn fibres and fabric back to the initial state.

2. Different types of fibres: Different fibres and their fabrics have different degrees of shrinkage, mainly depending on the characteristics of their fibres - hydrophilic fibres have a greater degree of shrinkage. For example, cotton, linen, viscose and other fibres, especially viscose fiber beach towels; and hydrophobic fibres have less shrinkage, such as synthetic fibres.

3. Different conditions: the fiber in the wet state, due to the role of liquid immersion under the effect of expansion, so that the fiber diameter becomes larger, such as in the fabric, forcing the fabric interweaving point of the fiber radius of curvature increased, resulting in a shorter length of fabric. For example, cotton fibers in the role of water puffing, cross-sectional area increased by 40-50%, the length increased by 1-2%, while synthetic fibers are shrinkage to heat, such as boiling water shrinkage, general 5% or so; textile fibers under heat conditions, the form and size of the fiber changes and shrinkage, cooling can not return to the initial state, known as fiber heat shrinkage.

Second, the beach towel fabric shrinkage factors

1. fabric of different raw materials, shrinkage rate is different. Generally speaking, moisture-absorbing fibers, fiber expansion after immersion, diameter increases, length shortens, shrinkage rate is large. Such as some viscose fiber beach towel water absorption rate of up to 13%, and synthetic fiber fabric moisture absorption is poor, its shrinkage rate is small.

2. Yarn count is different, the shrinkage rate is different. The yarn is made of fibres arranged by twisting around the yarn axis, its size changes in water, in addition to the nature of the fibres, but also its structure such as twist, tightness, etc.. Generally speaking, the shrinkage of a fabric with a thick yarn count is large, and the shrinkage of a fabric with a fine yarn count is small.

3. The density of the fabric is different, the shrinkage rate is also different. Such as warp and weft density is similar, its warp and weft shrinkage rate is also close. By the density of the fabric, the warp shrinkage is large, and vice versa, the weft density is greater than the weft density of the fabric, the weft shrinkage is also large. In general, the dimensional stability of high-density fabrics is better than that of low-density ones. And viscose fiber beach towel density is relatively close to have certain advantages.

4. Fabric production process is different, the shrinkage rate is also different. Generally speaking, the fabric in the weaving and dyeing process, the fiber to stretch many times, the processing time is long, the applied tension is larger fabric shrinkage rate, and vice versa is small. In order to control the door width of the fabric, in the actual process, we generally use pre-shrinkage to solve this problem.

5. Washing care, including washing, drying and ironing, each of these three steps will affect the shrinkage of the fabric. For example, the dimensional stability of hand washing is better than that of machine washing, and the temperature of the wash will likewise affect its dimensional stability. Generally speaking, the higher the temperature, the less stable it is. Choosing a suitable ironing temperature according to the composition of the fabric can also improve the shrinkage. Viscose fiber beach towels require even more attention to washing.

In summary, there are many reasons and factors for fabric shrinkage, caused by more than one step, so strict control is needed from yarn weaving to the finished product.