The problems raised by the usage and manufacturing of composite materials are numerous, starting from the prediction of the properties of a new material and going to the determination of some procedures, methods or materials that will eliminate some disadvantages. Because there is a wide variety of the materials already used, with a great diversity of characteristics and properties in a wide range of combinations involving various effects (mechanical, physical, chemical and so on), there have also been a number of issues that need to be addressed differently. The general properties of the composites are decisively influenced by the nature and proportions of constituents, by the nature of the matrix-reinforcement interface, the volume fraction of reinforcement in the composite and its orientation, and the reinforcing component architecture. This paper addresses a major research area of great interest and relevant in the present context, the emphasis is increasingly on environmental protection, saving material resources by developing and creating new manufacturing and execution technologies to be used in composite materials. The paper presents the ways of producing composite materials reinforced with textile materials made of natural fibres, as matrix being used polyester resins. Considering the quantitative availability of these textile fabrics, the experiments take into consideration variants of the bast fibers (flax, hemp and/or jute) for the reinforcement component.
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