“Designing and Pro
“Designing and Producing Fabrics Suitable for Being Used as Waterproof Raincoats”
Abstract
This research is mainly concerned with producing fabrics suitable for raincoats, which is considered the main protection garment beside hoods, ponchos ….etc. which used to provide protection to the body from rain showers .All samples under study were produced of polyester yarns 50, 70 and 100 denier .Three weft sets were used 60, 80 and 100 picks /cm and three fabric structure (plain weave 1/1, twill 1/4 and satin 5). Samples were coated using P.V.C in order to produce a waterproof, moisture vapor permeable laminated fabrics and having perforation to provide ventilation to the user. Their influence on the performance of the end-use fabric and the achieved properties were studied. On the other hand physic-chemical properties including, tensile strength and elongation, abrasion resistance, water permeability, water repellency, tear resistance, 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.
Types of rain protection garments
Rain protection garments can also be disposable specially rain hoods and ponchos and they are typically made of plastic sheets. Disposable rain hoods find particular uses at outdoor events, such as festivals and sporting events, where a sudden unexpected rain shower may catch individuals .
Properties of raincoats
protective garments for wear in rain and other wet conditions should keep the wearer dry by preventing the leakage of water into the garment and at the same time allow perspiration to evaporate from the wearer to the atmosphere. Rain garments should also withstand the impingement pressure of falling and wind blown rain and pressure that are generated in folds and crease in the garment.
Experimental work
This research concerns with producing fabrics suitable as a protective clothing from rain showers. All samples in the research were produced with woven technique. all samples in the research were produced with polyester yarns using three woven structure (Plain weave 1/1, twill 1/4 and satin 5) three weft sets were also used (60,80 and 100 picks ),sing three different yarns count (50,70 and 100 yarns ).
3. Results and Discussion
Tensile strength and elongation
It is clear from figures that there is a direct relationship between number of picks /cm and fabrics tensile strength, . It is obvious from the tables that plain weave has recorded the highest rates of tensile strength .
Abrasion resistance
It is also clear from the results, that there is a direct relationship between number of picks per cm and abrasion resistance (lost weight and thickness ratio).
Water permeability
It is obvious from the diagrams plain weave 1/1 has recorded the highest rates of water permeability, whereas satin 4 has recorded the lowest rates.
Water repellency
From tables and figures that fabric structure was insignificant on water repellency.
It was also found that, there is a direct relationship between weft set and water repellency.
Tearing resistance
From the results in tables it can be seen that, with the increase of weft set, the tear resistance increases. It is also clear from figures that treatment samples had a highest tear resistance compared to samples before treatment .
Thickness
It was also found that the more yarns per unit area the more thicker the samples become
Weight
It is clear from the results, that satin weave has recorded the highest rates of weight, whereas samples with satin which achieved the lowest rates, and it was found that the difference was insignificant.
