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Upholstery fabrics in general (and covers in Especially) are of great importance for consumers to use frequently in the summer As it provides comfort and appearance Necessary In view of its importance and features, it deserves to be studied from a technical and technological point of view, as the design of this type of fabrics is typical and is implemented on jacquard devices and its designs are considered as one-piece system. It is a canar and a sea of woven. There are hardly any of them implemented by the production method by the meter. Hence, the development of this quality of fabrics appears to reduce costs and increase production and by adapting the idea of woven phenomenon Whether the phenomenon was by Drawing in, design, or by shade and light, designs were made to be implemented New innovative designs have been created and are produced in thobe style to facilitate the production process and reduce costsThe phenomenon of textile reflection in its scientific and technical concept is one of the most widespread phenomena in textile science in general and in the methods of intercourse in particular. It means reflection in decorations, whether longitudinal or transverse, or their combination. And the reverse extrusive cast system in the dobby designs in addition to the axial designs with a central tendency implemented on the looms of the dobby or jacquard, and this method is suitable for the designs of the coverlets because it can be used on both sides, where the proportion of the appearance of the dam with the weft in both sides1. Reflection by light. 2. Reflection by finding and coverage factor.3. Reflection by spinning threads (properties of threads).4. Reflection by design.The following specifications and applied methods have been studied:Specifications and applied methods of covert fabrics: -The most important operational techniques used in the production of camouflage fabrics in descending order of popularity:1. Executed covers with extra-black style.2. Coverings executed in the imperial style (POLOMITA).3. Double-sided style coversThe research followed the experimental analytical method.So that the research plan includes an introduction and three chapters: -In the introduction, the research problem, the goal of it, the research hypotheses, the limits of research, and the research method were addressed, and previous studies were dealt with

The multi-layered fabrics have both natural and mechanical properties that effect the final use of the product, These layers are either separate or coherent with each other and this is commensurate with the requirements for its use, It is used for various purposes such as bed covers,tables,fabric coats, curtains, and in making some types of blankets , and in its fabrics the tents of camps and festive tents, It is also used in industrial fields such as cementing the soil with layers of geotextiles, and in lining drainage pipes,and in filters to filter the water to prevent pollution, and also in sound insulation and heat insulation, And within these fabrics are the three-layered fabrics where three warps are used, Which are exchanged in special places with three wefts to obtain patterns or fabrics with different effects, There are several methods of creating color effects with fabrics using colored yarns and wefts arranged in aspecial order in the warp and the weft or both, The color effect is one of the most important factors that affect the appearance of the woven fabric, and it gives different shapes, prepare adatabase that includes all these effects Where a table was made showing the maximum number of effects that can be obtained for multi-layer fabrics (triple) in the event that the warp color arrangement is fixed and the weft colors are different.Taking into account the stability of the Fabric Structure used,which is plain(1/1) in all layers, where the research interest in mathematics study of Structural composition of yarns and fabrics .To be areference for textile designers to save time and effort .

Fabrics produced on fabric looms with Dobby devices play a major role in meeting the needs of consumers of woven fabrics, especially in the field of clothing fabrics. With the great technological development in these lines and their connection to computers, this gave the designer the opportunity to increase his creative and innovative ability to produce designs with values Functional and aesthetic within the limits of the number of limited textile differences in those looms.Jacket fabrics are very important for consumers to use frequently in the winter as they provide the required warmth, and given its importance and advantages, it deserves technical and Technology consideration,Whereas the design of that kind of fabrics carried on dobby looms almost typical is represented in plain,streak, and plaid designs . There are rarely simple engravings , Hence the importance of developing this type of fabric and providing a new vision by adapting some of the relevant scientific theories and applying them to the production of innovative designs with a new aesthetic and artistic vision. The most important research is Presenting a new vision for winter jacket fabric designs, Promote the use of scientific foundations and theories to obtain new and diverse designs, Take advantage of the recent developments of dobby looms to develop dobby fabric designs, and Enrich the local market with advanced products.and Objectives is Development of winter jacket fabrics executed on dobby looms, Emphasis on the adaptation of theories and scientific foundations and use in the dobby fabric design, Developing the local product to face the competition of the foreign product.