Achieving Optimum Scientific Standards for Designing and Producing Fabrics Suitable for Ultraviolet Protective Clothing
This research is mainly concerned with producing woven cotton fabrics used in Ultraviolet Protective Clothing. The produced fabrics were treated with UV-Fast AO. Different parameters were studied including, fabric structure (plain weave 1/1, twill 3/3 and satin 6), Three weft sets were also used (24,30 and 36 pick/cm) and using two yarn counts (30/1 and 40/1 English ).Their influence on the performance of the end-use fabric and the achieved properties were studied. On the other hand physic-chemical properties including, U.V resistance, air permeability, water permeability, handle, thickness and weight were evaluated according to the final product needs. Some more results were reached concerning structures and materials. Most samples have achieved the expected results.
Ultraviolet radiation (U.V. radiation)
Solar radiation striking the earths surface is composed of light waves with wavelengths ranging from the infrared of (800 – 3000 nm wavelength) to the ultraviolet of ( 280 – 320 nm wavelength ).
Effects of ultraviolet radiation
Effects of solar ultraviolet (UV) radiation on human skin were recognized in the early1990 s. Elevated exposure to UV radiation can result in skin damage such as sunburn, premature skin ageing, allergies and even skin cancer .
Fabrics used in UV protection
Designing and modifying fabrics to offer high protection against ultraviolet (UV) radiation is a relatively new application, and is considered one of the most important element in preventing skin cancer. Owing to their low weight, cotton fabrics especially viscose fabrics made from filament yarns, are ideal for summer clothing and enjoy a high degree of acceptance among consumers.
This research concerns with producing fabrics suitable for ultraviolet protective clothing. All samples in the research were produced with cotton yarns using three woven structures ( plain weave 1/1,twill 3/3 and satin 6) .Three weft sets were also used (24,30 and 36 pick /cm) , using two different yarn counts (30/1 and 40/1 English )
3. Results and Discussion
It can be seen that there is an inverse relationship between number of picks and U.V resistance.
It is also notice from the diagrams that samples of 30/1 English have scored the highest rates of U.V resistance followed by 40/1 English.
It is clear from the diagrams that plain weave 1/1 has obtained the highest rates of air permeability, whereas satin 6 has obtained the lowest rates.
After treatment the fabrics smoothness is less because the treatment made in alkali and high temperature, these factors cause decrease in fabric smoothness. Softness material should be added in treatment bath to increase the fabric smoothness.
It is obvious from the diagrams, that plain weave 1/1 has recorded the highest rates of water permeability, whereas satin 6 has recorded the lowest rates.
It is clear from the diagrams, that regular hopsack 2/2 has recorded the highest rates of thickness, followed by twill and then satin weave .