3D Preforming technologies for composite applications

With the high end applications like aerospace, the orientation of the fibrous reinforcement is becoming more and more important from load bearing point of view as well as need of placing the reinforcement oriented in the third dimension. In textile process, there is direct control over fiber placements and ease of handling of fibers. Textile technology is of particular importance in the context of improving certain properties of composites like inter-laminar shear and damage tolerance apart from reducing the cost of manufacturing. Depending upon textile preforming method the range of fiber orientation and fiber volume fraction of preform will vary, subsequently affecting matrix infiltration and consolidation. As a route to mass production of textile composites, the production speed, material handling and material design flexibility are major factors responsible for selection of textile reinforcement production. This article reviews the developments occurred in this field of textile preforming along with their advantages and disadvantages and also presents the studies on 3D multilayer interlocked woven reinforced composite materials performance

Green textile dyeing process by using natural dyes: a review

In the textile industry, up to 200,000 tons of dyes are lost to effluents every year during the dyeing and finishing operations, due to the inefficiency of the dyeing process. Today, the textile industry used average six hundred dyes and chemical for the in production of textile dyeing industry (Christy, 2014). Due to the toxicity of dyes and chemicals used in textile dyeing processes has led to both human health and environment directly or indirectly. Therefore, “Go-green” or going green is one alternative way to maintain the sustainability and productivity of textile dyeing industry hence maintaining natural ecological balance in the environment and preserving its natural system and resources. The textile dyeing industry makes a big contribution to the economic growth and has become a massive industry throughout the years. This is because higher demand in the production of synthetic dyes since they are affordable, good colour fastness, has various of colours available and are easy to manufacture. However, the environmental impact arising from these industries aroused attention in today’s society. In terms of pollution, the textile dyeing industries has been condemned as one of the world’s most offensive industry among other sectors in the world. In fact, World Bank stated that textile processing polluted 20% of water pollution globally

FORMING A CLUSTER STRATEGY FOR TEXTILE INDUSTRY DEVELOPMENT IN UZBEKISTAN

The article confers urgency of establishing clusters in textile industry. Particular focus is given to resource interaction among compound elements of national textile cluster. Policy recommendations targeted to development of cluster in the textile sector of Uzbekistan are provided.Cluster, textile industry, competitiveness, cotton fiber, innovations., Industrial Organization, Marketing, Production Economics, L67, O25,

The structure-permeability relation of textile reinforcements

The limits of production processes of composites are explored increasingly. A higher performance and a higher quality are demanded at lower cost prices. Inevitably, a thorough understanding of the processes occurring during the production is essential to meet the imposed demands. The research presented here aims to increase the fundamental knowledge on a crucial part of the Resin Transfer Moulding (RTM) production technology: the impregnation behaviour of textile reinforcements. In RTM, a near-net-shaped, dry, textile preform is manufactured and placed in a closely fitting mould. Resin is subsequently injected, typically at a pressure varying between 2 and 10 bars relative to the atmospheric pressure. The textile reinforcement is made of a fibre bundle structure, which can either be a preform made of (a stack of) woven fabrics or Non¿Crimp Fabrics (NCF), or be a preform manufactured employing automated preforming technologies such as braiding and fibre placement technologies

The Brazilian Trade Liberalisation: the regionalized impacts on the productive chain of cotton, textile and apparel industries

During the last 8 years Brazil has experiencing a large program of commercial overture. A lot of administrative and tax barriers had suppressed and the textile sector had been one of the most affected by this process. The paper analyses the regional impact of this process over the so-called textile chain (cotton-textile-confections) utilising dates of production and sales from 1980 until 1994 for the most important production regions in Brazil. These informations are analyzed by nonparametrical statistics. In a synthesis, the commercial overture that happened in Brazil during the last 8 years didn't change the structural tendencies in the spatial division of work of the production links of Cotton, Textile and Confections. It incremented the Cotton March to West, the concurrence among decadent textiles regions as Pernambuco, Minas Gerais and S?o Paulo and those, more dynamics, as Santa Catarina and Ceara. The commercial overture has been a double, because are growing the exports and imports figures of Textile. On the other hand those that are still using old technologies, are closing the plants. But the price of this adjusting process was paid by the cotton's farmers and, maybe, by the small and medium firms of Confections. The new regions are growing due to different factors. Ceara, in the northwest of Brazil, due to fiscal incentives by SUDENE and advantages from direct importation of cotton from Africa. Santa Catarina, in the south, due to a special characteristic of its industrial organisation and a new territorial organisation of production buying cotton from Argentina, Paraguay and Parana (Brazil) and inputs textile from EEC.

Inkjet4Tex: Creative implications of 3D inkjet printing technologies for textiles

This project expands future applied-design capabilities for textiles as a function of inkjet deposition technology. The project investigates 3D inkjet rapid-production tools’ potential, focusing on creative gaps in the developing technology in its application to the textile design process. As such, the research investigates future design possibilities for inkjet printing technology in the creation of 3D textile structures and surfaces. The research “demonstrates how tacit knowledge can be employed, observed and created in a methodical way, with new artefacts playing a role in provoking insights based on tacit understanding”… [with a ] focus on developing and employing tacit insights that would not be revealed in situations where nothing has been changed.” (Rust, 2007) As inkjet textile technology evolves past a rapid prototyping tool into a series of responsive manufacturing techniques for textile products, designers, textile technology developers and soft goods industries will be able to use the results of this research to maximize their creative development. By developing and employing modified 2D/3D textile design processes with the technology future creators will be assisted to conceptualise and manufacture locally, creatively and with more accessible technologies. Keywords: 3D textiles, surface design, technology-driven design process, inkjet printing, fused deposition modelling, novel textile design</p

Textile structures modeled on a spider's net

Innovative textile fabrics modelled on the structure of a spider web can find application in the reinforcing of composites in conditions of where a centrifugal force occurs, for example rotational discs. At the Institute of Architecture of Textile at the Technical University of Łódź research work is carried out on mechanised production of woven fabrics whose struc- ture is modelled on a spider webweb. The paper presents a review of textile techniques and technologies from the point of view of their usefulness for producing fabrics of a flat round net type structure modelled on the structure of a spider web.There is also an analysis of the mechanical properties of the different textile structures from the point of view of fulfilling the requirements to operate in conditions which are affected by a centrifugal force

AUXILIARIES FOR THE TEXTILE INDUSTRY AND ENVIRONMENTAL PROTECTION

The textile industry is an industrial field that affects the environment, from the plant growth until the production process. The obtaining of environmental licence for Romanian companies that produce textile products is related to elaboration and implementation of a modern system for an environmental management, that consist in utilization of ecological technologies for finishing, in diminution the water and energy consumption, cleaning of waste waters, reutilization of cleaned waters, sustenable management of wastes. In this study, the surfactant categories used in the textile industry that fulfil the conditions of environment protection, are presented. Some exemplifications were made involving the existing surfactants in Romanian textile industry, obtained from both domestic and external production. Also, some recommendation are suggested regarding the utilization of surfactants manufactured from either vegetal oils or chemical/petrochemical wastes, with similar properties as those from import having decreased prices an that affect as small as possible the environment.textile industrie, surfactant, pollution, environmental protection

Sino-U.S. and Sino-E.U. Textile Safeguard Agreements: Comparing the Effects to Free Market Conditions

The effects of Sino-US and Sino-EU safeguard agreements on US, China and world cotton and textile sectors are investigated using a partial equilibrium model. The effects are compared to a free trade scenario under the provisions of the Agreement on Textiles and Clothing (ATC). The two agreements capping Chinese textile exports would decrease China's textile and apparel exports, production and domestic consumption by an average 1.57 percent, 0.63 percent and, 0.32 percent respectively. The safeguard agreements cause an increase in the U.S. cotton textile price index and a slight decrease in U.S. net textile imports and textile consumption. The agreements cause a decrease in the world cotton price and the quantity of cotton traded, but these trends reverse at safeguard expiration. The results generally support the view that the safeguard agreements forestall the effects of free trade in textiles and apparel rather than creating long lasting shifts in the textile trade.International Relations/Trade,