Tesi sul tema "Textile processes"
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Sutton, Kristen Ruth. "Systematic Approach for Error Proofing Transaction Processes". NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-03232009-132445/.
Veja, Priti. "An investigation of integrated woven electronic textiles (e-textiles) via design led processes". Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/10528.
Kanz, Philippe. "Characterization of Textile Draping Behaviours for Composite Manufacturing Processes". Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/41864.
Ward, P. T. "Visual inspection, its automation and application in the textile industry". Thesis, De Montfort University, 1986. http://hdl.handle.net/2086/10675.
Türgay, Orcun. "Decolourization of azo dyes in textile wastewater by microbial processes". Thesis, Växjö University, School of Technology and Design, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-7425.
Decolorization of Azo dyes in synthetic wastewater composition which is similar to real textile wastewater was carried out by microbial process. Experiments were performed in two continuous systems. Experiments were performed under anaerobic conditions in order to break the nitrogen bond of the azo group (-N=N-). A synthetic dye solution which contained 200 mg/L Reactive Black 5, 200 mg/L Procion Red MX-5B and 1 g/L yeast extract was prepared. In this study, living microorganisms were used to degrade the dyes in wastewater. Rice husks which contain bacteria and fungi were used in the reactors of continuous systems. The parameters tested on continuous system were wastewater composition, the number of reactors, the amount of yeast extract in wastewater composition, the wastewater flowrate, washing the system with wood chips solution, addition of yeast extract solution. Results have shown that increasing the number of reactors, the retention time, the amount of yeast extract and washing the system with wood chips solution had positive effects for degradation of the dyes from wastewater. When the flowrate was increased the retention time has decreased so degradation of dyes has decreased but although the flowrate increased twice, % degradation hasn’t decreased as the same ratio. Therefore this result showed that this process can be worked for faster flowrates. Microbial process is a promising technology which might be used to treat wastewater containing azo dyes with good performance.
Morgan, Laura. "Laser textile design : the development of laser dyeing and laser moulding processes to support sustainable design and manufacture". Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/23176.
Briggs, Amanda. "A study of photographic images, processes and computer aided textile design". Thesis, Nottingham Trent University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388871.
BORGES, ALINE RAMOS. "MODELING IN REPLICATED FACTORIAL EXPERIMENTS FOR IMPROVEMENT OF TEXTILE INDUSTRIAL PROCESSES". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24390@1.
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Esta dissertação descreve a aplicação de Modelos Lineares Generalizados (MLGs) à análise de um experimento visando identificar a combinação dos níveis das variáveis independentes: concentração de hidróxido de sódio (A), volume de hipoclorito de sódio (B) e sua interação (AB), que minimiza a variável resposta: proporção de itens com defeitos, em um processo de beneficiamento numa indústria têxtil de pequeno porte. A variável resposta encontra-se na forma de proporção, violando os pressupostos básicos do Modelo Linear Clássico e com isso as estimativas dos coeficientes pelo método de Mínimos Quadrados Ordinários (MQO) é menos confiável. O planejamento utilizado foi o fatorial completo 22 com ponto central e replicado. Após o planejamento, a modelagem pelo MLG é aplicada, só então é possível identificar uma subdispersão dos dados, verificar que o modelo empregado está correto e que o volume de hipoclorito de sódio (B) é o único fator significativo, no processo de alvejamento industrial da empresa. Portanto, como a finalidade é minimizar a resposta, utiliza-se o nível inferior (-1) desta variável. Consequentemente, como o intuito é reduzir os custos com insumos químicos pode-se utilizar o nível mínimo da concentração de hidróxido de sódio (A) e o nível máximo da interação entre os fatores (AB), já que eles não são significativos ao modelo.
This dissertation describes the application of Generalized Linear Models (GLMs) to the analysis of an experiment with the purpose identify the levels combination of independent variables: concentration of sodium hydroxide (A) volume of sodium hypochlorite (B) and their interaction (AB), that minimizes the response variable: proportion of defective items, in a process in a small plant of the textile industry. The response variable takes the form of a proportion, that violates the basic assumptions of the Classic Linear Model and, as a result, the estimates of the coefficients by Ordinary Least Squares method is less reliable. The design employed was a replicated complete 22 factorial design with central point. After doing the planning, the modeling by MLG is applied, and then it is possible to identify a underdispersion data; to verify that the model used is correct and that the volume of sodium hypochlorite (B) is the only significant factor in the industrial process of bleaching the company. Therefore, as the purpose is to minimize the response, it is used the lower level (-1) of this variable. Consequently, as the aim is to reduce costs of chemical inputs can use the minimum level of concentration of hydroxide sodium (A) and the maximum level of interaction between factors (AB), since they are not significant to the model.
Wei, Yang. "Screen printable sacrificial and structural pastes and processes for textile printing". Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/360759/.
Lezeck, Hendrick. "Textile CearÃ: reverticalizaÃÃo processes and their impacts on the quality and productivity". Universidade Federal do CearÃ, 2007. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=3590.
O trabalho tem como objetivo verificar os impactos da reverticalizaÃÃo de processos nos resultados de qualidade e produtividade gerados em empresas tÃxteis cearenses que optaram por esta estratÃgia. ApÃs anÃlise na sua cadeia de valor, muitas empresas, que incialmente adotaram o processo da terceirizaÃÃo, estÃo repensando suas decisÃes e quando necessÃrio, seguindo o caminho inverso, ou seja, desterceirizando suas atividades. Portanto, torna-se importante, compreender quais foram os principais fatores motivadores deste processo. A pesquisa, quanto aos fins, à de natureza descritiva e exploratÃria; com relaÃÃo à abordagem do problema, à de foco qualitativo. Com base na pesquisa bibliogrÃfica, que subsidiou o referencial teÃrico, procedeu-se a uma busca de campo, que deu suporte à anÃlise empÃrica. Foram aplicados questionÃrios e entrevistas semi-estruturadas para os gestores executivos e operacionais em trÃs empresas tÃxteis de grande porte do CearÃ, com base na amostragem intencional. Os resultados indicam que a decisÃo estratÃgica da reverticalizaÃÃo foi motivada pelo compromisso com a qualidade de seus produtos e processos, visando principalmente ao melhor atendimento aos clientes. Isto decorreu de problemas diversos observados pelas empresas com a terceirizaÃÃo de suas atividades-meio. Palavras-chave: reverticalizaÃÃo, terceirizaÃÃo, cadeia de valor e indÃstrias tÃxteis.
Adner, Johanna. "Exploring the Outdoors : mapping microplastics in the textile design- and production processes". Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-22087.
Nyström, Matilda, e Emelie Johansson. "Textile waste is only matter out of place : Antecedents of value creation in reverse textile value chains". Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-641.
Petreca, Bruna Beatriz. "An understanding of embodied textile selection processes & a toolkit to support them". Thesis, Royal College of Art, 2016. http://researchonline.rca.ac.uk/2363/.
Baldeon, Lazaro Thania Yamile, e Salas Pedro Sebastian Malasquez. "Modelo de producción para mejorar la eficiencia de una empresa exportadora de prendas de punto de algodón en Perú utilizando 5s, estandarización de operaciones y mantenimiento autónomo". Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/651723.
Nowadays, organizations in the cotton knitwear industry have had to adapt to a client who is not willing to pay an additional cost for activities that do not add value to the product. In Peru, exporting companies of cotton knitwear are closed every year, since they cannot compete with countries such as China and Hong Kong due to their high production costs. Therefore, the aim of this article is to develop a production management model based on Lean Manufacturing techniques and standardization of operations to reduce waste in the production flow, thus improving quality, and reducing production time and costs. For this, Production model and Continuous improvement (PDCA) were implemented. It was validated in an export company of cotton knitwear in Peru, where it was posible to obtain as an improvement the efficiency by 10%, reduce defective products by 20% and generate savings of 5,000 soles per month.
Trabajo de investigaciòn
Onggar, Toty, Shayed Mohammad Abu, Rolf-Dieter Hund e Chokri Cherif. "Silvering of three-dimensional polyethylene terephthalate textile material by means of wet-chemical processes". Sage, 2015. https://tud.qucosa.de/id/qucosa%3A35399.
Harper, Alison. "How can my textile art and my textile craft processes contribute to a dialogue through an investigation of materials used in a disposable culture?" Thesis, Bath Spa University, 2017. http://researchspace.bathspa.ac.uk/10709/.
Li, Shiqi. "On-line dye analysis for carpet dyeing processes". Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/8596.
Langham, Karin. "Exploring Maori identity (Whakapapa) through textile processes : a visual arts program for year 11 students". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2010. https://ro.ecu.edu.au/theses/1862.
Paleologos, Esther, e esther paleologos@rmit edu au. "An exploration of new processes and products for knitted textiles: this research will explore the combination of standard and non-standard fibres and finishing processes to create three-dimensional and sculptural knitted fabric structures, while expanding the potential of domestic machine knitting to be viewed as an art form". RMIT University. Fashion & Textiles, 2010. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20100329.143129.
Gupta, Murari Lal. "Development of commercial, sustainable processes for dyeing generic, unmodified polypropylene fiber". Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26643.
Committee Chair: Cook, Fred; Committee Member: Beckham, Haskell; Committee Member: Bottomley, Lawrence; Committee Member: Carr, Wallace; Committee Member: Etters, Nolan. Part of the SMARTech Electronic Thesis and Dissertation Collection.
SILVA, Rogério Ferreira da. "Degradação de corante de efluente têxtil por processo oxidativo avançando". Universidade Federal de Pernambuco, 2015. https://repositorio.ufpe.br/handle/123456789/17383.
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CNPq
As indústrias têxteis são importantes na economia de um país devido à geração de recursos. Constituem indústrias que consomem bastante água e produzem efluentes líquidos potencialmente poluidores. Entre as substâncias tóxicas despejadas em corpos receptores, destacam-se os corantes. A fiscalização destas indústrias no Arranjo Produtivo Local Pernambucano (APL) é precária e os processos aplicados nos tratamentos não são totalmente eficientes, sendo necessária a busca por novas formas de tratamento a fim de remover os poluentes e aumentar a eficiência dos processos de tratamento. Este trabalho visa contribuir para a minimização de problemas ambientais, promovendo a redução de parâmetros como cor, turbidez, demanda química de oxigênio, carbono orgânico de efluentes têxteis e toxicidade, utilizando Processos Oxidativos Avançados como uma das etapas do tratamento do efluente de uma das lavanderias da região do agreste pernambucano. Para tanto, examinou-se uma solução aquosa com concentração de 1000 mg.L-1 do corante vermelho drimaren CL-5B, amplamente utilizado pela lavanderia estudada, e um efluente real, coletado numa lavadeira de jeans de Caruaru. Como resultado, obteve-se degradação maior que 90% e redução de 73% da DQO para a solução do corante. Para o efluente real, obteve-se redução de 98% de turbidez, 80% de cor e 70% para DQO. Um estudo ecotoxicológico com sementes de alface foi realizado antes e depois do tratamento pelo processo foto-Fenton, sendo observada elevada redução da toxicidade após o processo oxidativo avançado utilizado, alcançando-se índices de germinação superiores a 80%, indicando redução na toxicidade. O trabalho resultou na sugestão de um sistema para tratamento efetivo do efluente de uma industria do agreste pernambucano. Para esse sistema, já foi protocolado um pedido de patente.
Textile industries are important in the economy of a country due to the generation of resources. They consume plenty of water and produce potentially polluting liquid effluents. Among the toxic substances discharged into receiving bodies, stand out the dyes. The supervision of such industries in the Local Productive Arrangement Pernambucano (APL) is precarious and the procedures applied in treatments are not totally efficient, requiring the development of new forms of treatment to remove pollutants and increase the efficiency of treatment processes. This work aims to contribute to minimizing environmental problems, promoting the reduction of parameters such as color, turbidity, chemical oxygen demand, organic carbon total in textile effluents and toxicity from use Advanced Oxidation Processes as one of the stages of treatment of effluent from one textile industry. Were studied two systems: an effluent model – an aqueous solution containing red dye Drimaren CL-5B (1000 mg L-1), widely used by the studied laundry, and a real effluent, collected in Caruaru jeans laundress. As a result the assays indicated degradation more than 90% and 73% reduction at COD in the effluent model. For the real effluent, were obtained 98% reduction in turbidity, color and COD equals to 98%, 80% and 70%, respectively. Ecotoxicological studies with lettuce seeds were performed before and after treatment by photo-Fenton process, being observed high reduction of toxicity after advanced oxidation process used, reaching up germination rates of over 80%, indicating a reduction in toxicity. It was also idealized a system to effective treatment of industrial effluent. To this system were protocoled a register of patent.
Hou, Yi. "Experimental characterization and modeling of the permeability of fibrous preforms using gas for direct processes application". Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2012. http://tel.archives-ouvertes.fr/tel-00848600.
Puglia, Roger Luis. "Redução da geração de resíduos sólidos em um processo de fabricação em uma empresa de confecção de lingerie utilizando o conceito de produção mais limpa". reponame:Repositório Institucional da UCS, 2017. https://repositorio.ucs.br/handle/11338/3510.
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Lundberg, Malin, e Maja Blomqvist. "Textil fotokatalys : biomimetik med textila processer". Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-230.
Younes, Basel. "The statistical modelling of production processes of biodegradable aliphatic aromatic co-polyester fibres used in the textile industry". Thesis, Heriot-Watt University, 2012. http://hdl.handle.net/10399/2522.
Oliva, Bravo Giancarlo, e Quispe Francisco Roberto Soncco. "Impacto financiero de la identificación y valoración de riesgos de incorrección de las MYPEs para la gestión de recursos y procesos operativos del sector comercial textil en la Asociación “Señor de Luren”, del 2017". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2018. http://hdl.handle.net/10757/625946.
In the present work of investigation the determination of the Financial Impact of the Identification and Assessment of Risks of Improvement of the mechanisms for the Resource Management and Operational Processes of the Textile Trade Sector in the Association "Señor de Luren" was analyzed; As a reference for the application of ISA 315. The type of research was analytical, descriptive and field. The population studied for the quantitative analysis is composed of 115 micro enterprises dedicated to textile trade in the "Señor de Luren" Commercial Association; likewise, the population for the qualitative study is composed of three specialists of the sector. In addition, an analysis has been made of the cases in which each company meets the particular requirements for a better understanding of the research. A sample with a confidence level of 0.95 is shown. The data were analyzed with descriptive statistics. The results showed that 100% of respondents do not have their controls mapped; however, in the case of the experience they have in the field. Microentrepreneurs have deficiencies in accounting policies; As well as inefficiency in risk management. It is recommended to implement the improvements for Resource Management and of Operational Processes.
Tesis
Schliephake, Hanna Josephina, e Charlotte Laila Niemann. "Digital Institutions to Support Data-Driven Circularity Innovation : The Improvement of Textile and Apparel Recycling Processes through Blockchain Technology". Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-26415.
Aguilar, Johansson Ida, e Andrea Runstrand. "Obstacles in the textile upcycling chain, a case study of the communication between small-scaled upcycling actors and their processes". Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-23802.
Återbruk av textilier är en väl omtalad metod för att ta vara på använda textilier för att minska på miljöpåverkan som kommer från textilindustrin. Många snabbt modeväxlande företag har försökt implementera återbruk i deras egna värdekedjor för att bli mer cirkulära. Även om tanken är god, så är det mer som behöver göras för att få en bättre effektivitet när det kommer till att återbruka textila modeprodukter. Syftet med rapporten var att undersöka hinder i den textila återbrukskedjan hos småskaliga aktörer som ägnar sig åt designdriven återbruk. Rapporten utreder dels en specifik textil värdekedja som grundar sig på att omdesigna hemtextilier som kommer ifrån textilt konsumentavfall. Rapporten utreder samarbetet mellan leverantör, designer och tillverkare i denna specifika värdekedja. Detta genom att redogöra för deras nuvarande kommunikation och processteg. Studien avser att ligga till grund för skapandet av kommunikationsverktyg för aktörer som arbetar liknande. Re:textile på Science Park Borås är en verksamhet som jobbar med att utveckla nya designmetoder, företagsmodeller samt produktionssystem i textilindustrin för ett bättre cirkulärt flödessystem. Samarbetet med Anna Lidström, Konstnärlig Ledare på Re:textile gjorde det möjligt för författarna att undersöka återbruksindustrin och identifiera bristerna i förproduktion och produktionsprocessen. För insamling av information till denna rapport har datainsamling och intervjuer med svenska företag gjorts. Företagen som ställde upp på intervju var ifrån olika verksamheter i den textila återbruksindustrin. Företagen var Rave Review, XV Production, Björkåfrihet och SIPTex. Information från intervjuerna bidrog till underlag för en analys. De semi-konstruerade intervjuerna varierade med både telefonintervju samt platsbesök. Sammanställningarna från intervjuerna har med aktsamhet använts för få svar på rapportens frågeställningar. Slutsatser redogörs som hinder för den textila återbrukskedjan hos designdrivna småskaliga aktörer. Ett hinder är bland annat att tillgodose större kvantiteter av textilt konsumentavfall som håller samma kvalitet. Ett annat hinder är att säkerställa kvalitén av produkten genom värdekedjan till kund. Ett tredje hinder är att kommunikationsverktygen inte är skrivna enligt några principer vilket bidrar till misstag i tillverkningsprocessen.
Oliveira, Clélia Aparecida da Silva 1972. "Tratamento de corante têxtil por eletrólise, fotólise e fotocatálise utilizando LED UV = Treatment of textile dye by electrolytic, photolytic and photocatalytic processes". [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267750.
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Tecnologia
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Resumo: A indústria têxtil gera elevados volumes de efluentes com alta carga orgânica e compostos recalcitrantes, os quais são tratados por sistemas baseados em processos físicos, químicos e biológicos convencionais. Entretanto, o caráter não destrutivo dos tratamentos convencionais representa um sério problema no setor. Nos últimos 20 anos, os Processos Oxidativos Avançados (POA) têm estado em evidência devido à sua capacidade em degradar inúmeros compostos orgânicos contidos em águas e efluentes. Uma grande quantidade de trabalhos utilizando luz UV a partir de lâmpadas de vapor de mercúrio tem resultado em elevada eficiência de degradação de substratos recalcitrantes incluindo efluentes têxteis; entretanto, demandam elevado consumo de energia elétrica, encarecendo o tratamento. Em contrapartida, o surgimento de Diodos Emissores de Luz Ultravioleta (LED UV) abre novas fronteiras de aplicação no campo de tratamento de águas residuárias, quanto a custo, operacionalidade e tamanho dos sistemas. Nesse trabalho estudou-se a degradação de um efluente têxtil simulado contendo o corante Remazol Azul Brilhante (C.I. Reactive Blue 19) através de processos eletroquímicos e fotoeletroquímicos que utilizam LED UV, utilizando-se dois reatores: um operando em batelada contendo o fotocatalisador TiO2 e o outro, em fluxo, contendo um cátodo (tela cilíndrica de aço-inoxidável), um tubo de quartzo contendo os LED UV e o Anodo Dimensionalmente Estável (ADE 70%TiO2/30%RuO2). Os resultados demonstraram que, no reator de bancada, a eficiência de remoção de cor foi de 100% para concentração inicial de 50 mg L-1 do corante, em 24 horas de tratamento. No reator em fluxo, utilizando Na2SO4 como eletrólito, o processo eletrolítico resultou em eficiência de 65%; o fotoeletrocatalítico, em 68%, operando a 750 L h-1 e em 57,3 mA cm-2. Quando foi utilizado o eletrólito NaCl, obteve-se remoção de 100% da cor em 5 minutos de tratamento a 750 L h-1, independente da concentração inicial do corante utilizada (50 mg L-1 ou 100 mg L-1), da concentração do eletrólito (0,05 M ou 0,1 M), da densidade de corrente (14,3 mA cm-2 , 28,7 mA cm-2 ou 57,3 mA cm-2) e do processo utilizado
Abstract: The textile industry generates large amount of wastewater containing significant organic load and recalcitrant compounds, which in most cases are treated by conventional systems involving physical, chemical and biological processes, the latter represented mainly by activated-sludge treatment. However, the non-destructive profile of conventional treatments is a serious problem for textile-based industry. Over the past 20 years, the study of Advanced Oxidation Processes (AOP) has been carried out due to its high capacity degradation of numerous organic pollutants contained in waters and wastewaters. Research using UV light from mercury vapor lamps usually has resulted in high efficiency degradation of recalcitrant substrates including textile effluents but requires high electrical power consumption besides other drawbacks. In contrast, the emergence of Ultraviolet Light Emitting Diodes (UV LED) opens new perspectives for application on wastewater treatment, concerning efficiency, footprint and costs of the systems. In this work we studied the degradation of a simulated wastewater containing a textile dye, Remazol Brilliant Blue (C.I. Reactive Blue 19) through electrochemical and photoelectrochemical processes using UV LED as ultraviolet radiation source. The experimental apparatus consisted of two systems: the first, a bench-scale reactor containing TiO2 photocatalyst (P25 DEGUSSA) in solution, and another pilot-scale system operated in batch recirculation mode composed of an tubular stainless-steel screen cathode, a quartz tube containing the UV LED and a oxide-coated titanium anode (DSA©30%TiO2/70%RuO2). The results showed total decolorization of a solution containing 50 mg L-1 of RB in 24-hour treatment in the bench-scale reactor. Tests on flow reactor using Na2SO4 as supporting electrolyte resulted in 65% of color removal using electrolytic process and 68% for photoelectrocatalytic process operating at 750 L h-1 and 57.3 mA cm-2. In experiments using the electrolyte NaCl it was obtained 100% in the color degradation within 5 minutes of treatment at 750 L h-1, regardless of the: initial concentration of dye used (50 mg L-1; 100 mg L-1), concentration of the electrolyte (0.05 M; 0.1 M) and current density value (14.3; 28.7; 57.3 mA cm-2)
Mestrado
Tecnologia e Inovação
Mestra em Tecnologia
Sellar, Christian Pickles John. "The relationship between the processes of outsourcing of Italian textile and clothing firms and the emergence of industrial districts in Eastern Europe". Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2007. http://dc.lib.unc.edu/u?/etd,1162.
Title from electronic title page (viewed Mar. 27, 2008). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Geography." Discipline: Geography; Department/School: Geography.
Romero, Sánchez José Miguel Ernesto, e Vílchez Ruby Dadiana Martínez. "Propuesta de mejora en el proceso de tintorería y acabado de tela de una empresa del rubro textil empleando la metodología Lean Manufacturing". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/657010.
The textile sector presents a general problem, due to the increasing introduction of international products (Chinese, Hindu, etc.) due to the low cost of labor and the use of high-tech equipment, this forces companies in the sector to improve your production processes, produce more with less, and reduce costs from the most basic jobs. Therefore, it is proposed to implement the Lean Manufacturing methodology, focusing directly on the optimization of production processes using its various tools and a selection of indicators for monitoring results. To validate, a case study was carried out applied in a real company that implemented the different Lean tools and the Kaizen matrix in the dyeing and finishing process, a process that presents a high percentage of defects. This allowed to effectively reduce the amount of reprocessing by a significant 10.94%, which allowed the company to save $ 184,320.42.
Tesis
Kirschner, Auguste. "Contribution à l'étude des variables et processus aléatoires associés aux structures textiles linéaires". Mulhouse, 1987. http://www.theses.fr/1987MULH0047.
Matysíková, Jana. "Znovu-užití vyčištěných odpadních vod v papírenském a textilním průmyslu". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225374.
Motoki, Edison Massao. "Procedimentos para mitigação do impacto de qualidade de energia na indústria têxtil". Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-27072007-164807/.
The increasing evolution of technology in the current industrial processes, as well as the high interaction degree of equipment items and processes, have caused the increase in their sensitivity to voltage variations. The increase of sensitivity in some industrial loads generates interruptions in the industrial production. That happens due to power quality problems, which causes many undesired effects to the industries, such as losses in production, invoicing and raw material, unreasonable use of energy, among others. A textile process presents large production losses whenever these events in the process occur. This dissertation presents a sequence of technical procedures adopted experimentally in two yarn plants, to mitigate and reduce the impact of power quality problems in the chemical textile plant. The problem of power quality studied was short duration voltage variations, specifically the voltage sags. These events lead to a big volume of loss in the process, by operational disruption of sensitivity loads provoked by the voltage sags. By means of the proposed procedures it was possible to identify the critical load, in this case the ASD (Adjustable Speed Drive), a kind of load used extensively in the textile process; once identified this load, it was possible to carry out interventions aiming at the reduction of loads sensitivities. Two experiences were realized through a panel that simulated the process, by applying voltage sags to the drivers - ASD (Adjustable Speed Drive). Besides that other research works surveyed to complement and conclude this dissertation. The interventions realized have had as consequence the improvement in the product quality, increasing productivity, as well as an excellent payback.
Dréan, Jean-Yves, e Marc Renner. "Contribution à l'étude théorique et expérimentale du processus d'obtention des textiles linéaires". Mulhouse, 1986. http://www.theses.fr/1986MULH0018.
Badmus, Kassim Olasunkanmi. "Treatment of persistent organic pollutants in wastewater with combined advanced oxidation". University of the Western Cape, 2019. http://hdl.handle.net/11394/6785.
Persistent organic pollutants (POPs) are very tenacious wastewater contaminants with negative impact on the ecosystem. The two major sources of POPs are wastewater from textile industries and pharmaceutical industries. They are known for their recalcitrance and circumvention of nearly all the known wastewater treatment procedures. However, the wastewater treatment methods which applied advanced oxidation processes (AOPs) are documented for their successful remediation of POPs. AOPs are a group of water treatment technologies which is centered on the generation of OH radicals for the purpose of oxidizing recalcitrant organic contaminants content of wastewater to their inert end products. Circumvention of the reported demerits of AOPs such as low degradation efficiency, generation of toxic intermediates, massive sludge production, high energy expenditure and operational cost can be done through the application of the combined AOPs in the wastewater treatment procedure. The resultant mineralisation of the POPs content of wastewater is due to the synergistic effect of the OH radicals produced in the combined AOPs. Hydrodynamic cavitation is the application of the pressure variation in a liquid flowing through the venturi or orifice plates. This results in generation, growth, implosion and subsequent production of OH radicals in the liquid matrix. The generated OH radical in the jet loop hydrodynamic cavitation was applied as a form of advanced oxidation process in combination with hydrogen peroxide, iron (II) oxides or the synthesized green nano zero valent iron (gnZVI) for the treatment of simulated textile and pharmaceutical wastewater.
Laktim, Mariana Costa. "Cama, mesa e banho: desenvolvimento de materiais e processos têxteis, design e moda no Brasil (1976 - 2017)". Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/100/100133/tde-31102018-172203/.
The trousseau has been known since antiquity and has undergone a series of modifications, reflected in the type of fabric, confection, design, fashion and market share. These changes were also influenced by the changing position of women in society. The present study aimed to study the development of the bed, table and bathroom sector in Brazil, from 1976 to 2017, in terms of market, materials and textile processes, design and fashion. The methodology consisted of a survey of Casa Vogue Brasil and Casa Claudia magazines from 1977 to 2017 for the study and analysis of textile materials, designs and brands in the bed, table and bathroom sector based on images and texts. In addition, on the basis of the main reports related to the textile and clothing industry and other literature, research was carried out on the processes and machinery for the production of bed, table and bath and market aspects of this sector. Finally, interviews were conducted with companies in the bed, table and bathroom sector. The classic textile materials and designs are crisp in style presentation preference. In terms of trade, there were major changes in the Brazilian market from 1976 to 2017. At the beginning of this period the highlights were department stores and, over the years, companies were creating their space with highlights in the brands. The most prominent brands in the last two decades (2000 and 2010) of Casa Vogue Brasil magazine were Trousseau, Trussardi and the multi-brand department store Mundo do Enxoval (these brands have the highlight for the most affluent public in Brazil). In the magazine House Claudia, were Buddemeyer, Trousseau and MMartan. With the technological advance, it became more accessible the purchase of products of bed, table and bath industrialized and thus increased the Brazilian export. The evolutions of the machinery and the whole process involved, helped to obtain products with more accessible values, better quality and standardization of the finished products. It is observed that, the sector advances and develops playing an important role in the textile production. However, classic patterns predominate with white and cotton in bed, table and bath products, with embroidery being the most outstanding ornament of the style of these products. The maintenance of these standards by the Brazilian manufacturers is interesting to maintain sales in the domestic market, but a limitation for export products destined to audiences with different values and aesthetic tastes and with a greater supply of items with a variety of surface designs
Barrientos, Ramos Nicole Jonika, e Cayetano Luz Milagros Tapia. "Modelo Lean Manufacturing de reducción de mudas aplicando el trabajo estandarizado para reducir la cantidad de productos con defectos en Mypes textiles". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653024.
Currently, the textile industry is equivalent to 7.2% of the GDP of manufacturing companies and is the second group with the largest market share, as it has a significant impact on the country's economy. However, it has suffered great instability in its sales due to the high competitiveness coming especially from Southeast Asia, who have carried out high-volume productions with operating costs below the market, compared to this, many companies have opted for outsourcing of Various stages of production with the proposal of reducing their costs. Low productivity, the variability of its processes, operating cost overruns, long production times, among others, are the main causes of the gap that exists in the sector and which must be attacked. Therefore, the purpose of this research is to contribute to the textile industry with methodologies and tools that will be competitive in the sector, reducing operating costs. A real case study applied to an affected company TEXTIL S.AC. will be analyzed. following the application of the combined work that allows integrating labor, work method and machines and with it the changes as products with defects that incur costs for the company. The main results led to the conclusion that Lean tools are effective in normalizing the process and thereby reduce variability and increase the productivity of a textile company.
Trabajo de investigación
Párraga, Orellana Jhony Joel, e Flores Jonathan Eduardo Yarlequé. "Mypes textiles de fibra de alpaca para poder atender pedidos de gran volumen". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/628190.
The objective of the thesis is to elaborate a basic Process Management model so that the Alpaca fiber textile SMEs that exist in the City of Puno, in the department of Puno of Peru, can begin to take care of large orders. This model outlines the standardization of Production Planning and Control. The purpose is that the different SMEs work under the same scheme to standardize the final products through an associative behavior to meet large orders. This work focuses on four chapters, the first chapter focuses on the research of the sector on which we are conducting the research. The second chapter shows the results of the research that was done using the snowball. The third chapter establishes improvement plans aligned to a basic process approach. Finally, in the fourth chapter the validations of both experts and the producers of the SMEs are presented. The results obtained through interviews with the 49 SMEs producers were that 84% work without stipulated processes, simply by experience. Also, 79% are unaware of the importance of control panels to achieve improvements to reprocesses. Additionally, 90% reject large orders, since they do not have the production capacity or the raw material required. Finally, only 9% follow up on their customers and suppliers.
Tesis
Santivañez, Enciso Mayerlin Arazeli, e Orcottoma Leonidas Aaron Saroli. "Modelo de Manufactura Esbelta Adaptada a la Reducción de Tiempo de Entrega de Pedidos en una Pyme Peruana del Sector Textil-Confección". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/651892.
The existence of delays in the delivered orders in SMEs in the clothing sector, the growing demand of customers to obtain a quality product and receive the orders on time has forced organizations to implement improvement models in their production systems. For these reasons, this article proposes to use a model that adapts to the reduction of delivery times in the production lines of garment companies based on the combined application of good practices, tools and concepts of lean manufacturing. This combination emphasizes the use of the value stream map (VSM) as a diagnostic tool, work standardization as an opportunity for improvement and a modular system that highlights lean concepts that are applicable to minimize the time of inventories in process. Achieving a 24% reduction in the total lead time of the garments.
Trabajo de investigación
Wilsby, Astrid. "Insight in cellulose degradation". Thesis, KTH, Fiber- och polymerteknologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302670.
To reduce the extensive environmental impact of the textile industry, new methods for textile recycling are being developed. Today, cotton-based fabric is recycled by Renewcell at their facility in Kristinehamn. The recycled product, Circulose®, is a dissolving pulp that can be used to spin new viscose fibers, which in turn can be used to make new clothes. The present work is a feasibility study on the possibility of optimizing Renewcell's recycling process. The work includes an optimization of the pulp process, which results in a more efficient process with a reduced consumption of process chemicals.
Pichon, Noémie. "Méthode de génération de données d’inventaire du génie des procédés textiles : contribution à l’écoconception des vêtements". Electronic Thesis or Diss., Centrale Lille Institut, 2023. http://www.theses.fr/2023CLIL0039.
The fashion and textile industry is a complex, highly fragmented, and globalized valuechain, requiring a wide range of professions with specific expertise, and a highly heterogeneous level ofknowledge regarding the sector's environmental burdens. Given that climate and environmental issueshave never been so high on the agenda, scientific literature has been growing in recent years to assessthe environmental and human health impacts of this sector, which has been identified as the fourth mostpolluting industry in Europe, all impact categories combined. The eco-design of products is today acentral approach to achieve the sector's impact reduction targets. The challenge today is to extend itsuse to as many players as possible.The main aim of this research was to develop a method for generating textile Life Cycle Inventory(LCI) data, in order to promote eco-design and continuous improvement in the production stage of agarment's life cycle. The research work was carried out at the finest scale of textile process engineering,i.e. at the unit process scale. An illustration of this method for a specific transformation stage in textileengineering: from fiber to yarn, also known as spinning, was therefore carried out, including thecalculation of uncertainties. Finally, the analysis of the contributions to the results highlighted eco-design leverages
Asurza, Espíritu Rossmery Isabel, e Rivera Verónica Inés Pardo. "Los costos por procesos y su influencia en la rentabilidad de las MYPES del sector textil en el Emporio Comercial de Gamarra en el 2018". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653170.
The purpose of this research work is to analyze the impact that the cost-per-process system has on the profitability of micro and small businesses that are dedicated to manufacturing clothing in the Commercial Emporium of Gamarra. We focus on the MYPES because it is the main percentage of participation of the Commercial Emporium of Gamarra, the latter is the most important traditional market and of great economic movement related to the textile industry. Likewise, this sector is one of the most relevant because it contributes to the productive growth of the country through the use of raw materials of national origin. This research was developed with the purpose of helping microentrepreneurs to make sound decisions so that they can improve their productivity and competitiveness. Through interviews, surveys and the case study that we have developed, it is intended to demonstrate the positive impact on the profitability of businesses that use a process cost system.
Tesis
Achando, Susana Alexandra Ginja. "A multimédia como ferramenta de ensino à distância do desenho têxtil". Master's thesis, Instituições portuguesas -- -Universidade do Minho -- -Escola de Engenharia -- -Departamento de Engenharia Têxtil, 2000. http://dited.bn.pt:80/29336.
Galvão, Davi Simão. "Desenvolvimento de um tratamento contínuo de efluente têxtil utilizando filtros de cigarros modificados com íons férricos". Universidade Estadual de Ponta Grossa, 2018. http://tede2.uepg.br/jspui/handle/prefix/2545.
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Com o aumento da população nas últimas décadas, consequentemente aumenta o número de indústrias para suprir as necessidades básicas da população. Dentre essas empresas, a indústria que ganha destaque na região do Paraná é o setor têxtil, onde ocupa o 2º maior pólo confeccionista do Brasil. O grande problema desse setor é que durante o beneficiamento dos tecidos 10-15% dos corantes são lixiviados ao meio ambiente, acarretando sérios danos ao próprio meio ambiente. Desta forma, buscam-se métodos mais eficientes para degradação desta matéria orgânica poluidora, dentre os métodos alternativos que têm sido estudados o Processo Avançado Oxidativo (PAO) é baseado na geração do radical hidroxila (HO•), que é um forte agente oxidante levando a oxidação da matéria orgânica. Esse processo ainda pode ser dividido em vários tipos, como processos com e sem radiação, homogêneos e heterogêneos. Assim o objetivo deste trabalho foi estudar a degradação de um efluente têxtil real utilizando o processo “tipo-Fenton”, onde utiliza-se os filtros de cigarros como material suporte para a imobilização de íons férricos. Para monitorar a degradação foi utilizado técnicas analíticas como Carbono Orgânico Total (COT), Demanda Química de Oxigênio (DQO),Turbidez, Cor, detecção de Ferro Total, e a detecção de peróxido de hidrogênio. Os resultados mostraram que no reator contínuo o COT foi reduzido em 78,62%, a DQO em 64%, a turbidez 65,5%, enquanto que a cor 42% em 90 minutos de reação. A lixiviação de ferro total foi de 0, 072 mg L-1 e o peróxido residual foi 29 mg L-1. Isso mostra a eficiência desse método para tratamento de efluentes têxteis.
With the increase of the population in the last decades, consequently the number of industries increases to satisfy the basic necessities of the population. Among these companies, the industry that stands out in the region of Paraná is the textile sector, where it occupies the second largest confectionary pole in Brazil. The biggest problem of this sector is that during the processing of the tissues 10-15% of the dyes are leached to the environment, causing serious damages to the own environment. The Oxidative Advanced Process (PAO) is based on the generation of the hydroxyl radical (HO•), which is a strong oxidizing agent leading to the oxidation of organic problem. This process can still be divided into several types, such as homogeneous and heterogeneous processes with and without radiation. Thus the objective of this work was to study the degradation of a real textile effluent using the "Fenton-like" process, where the cigarette filters are used as support material for the immobilization of ferric ions. To monitor the degradation, analytical techniques such as Total Organic Carbon (TOC), Chemical Oxygen Demand (COD), Turbidity, Color, Total Iron Detection and the detection of hydrogen peroxide.The results showed that in the continuous reactor the TOC was reduced by 78.62%, the COD by 64%, the turbidity 65.5%, while the color 42% by 90 minutes of reaction. Total iron leaching was 0.072 mg L-1 and the residual peroxide was 29 mg L-1. This shows us the efficiency of this method for treatment of textile effluents.
Bardales, Vasquez Zonia Brenda, e Alvarado Paolo Stevens Tito. "Propuesta de reducción de incumplimiento de pedidos en empresa productora de tela para exportación mediante la alineación de herramientas de calidad y gestión por procesos". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/657117.
The present project presents the implementation of an innovative methodology that allows integrating Process Management with the guidelines of quality tools in a company that exports Textile. This aims to be a guide for the applicability and adaptability of the innovative technique in different areas. First, the background of the textile environment and the main deficiencies with which it develops will be developed. Likewise, the importance of the sector for the country will be analyzed given its contribution to GDP, as well as the study of the technique to be used to solve the problem. Later the analysis of the case study will be carried out, which will begin with the qualitative and quantitative justification and then analyze the immediate causes and roots. The aim is to determine the relationship between variables that allow demonstrating the impact on the central problem found and the economic impact that demonstrates the effect on profitability. Subsequently, the innovative proposal will be presented as a solution to the problem and its structuring, the scope, considerations and a schedule will be outlined to determine the estimated time for its development. Then, the effectiveness of the pilot model and the indicators that allow it to be evidenced will be carried out in accordance with the analysis of the current situation of the company, accompanied by an economic evaluation that demonstrates its profitability and the period of return on investment. Finally, the conclusions and recommendations of the full report with the achievements are developed
Trabajo de Suficiencia Profesional
Romakkaniemi, I. (Idamaria). "Biodegradation of synthetic textile fibres". Bachelor's thesis, University of Oulu, 2018. http://urn.fi/URN:NBN:fi:oulu-201808232664.
Synteettiset kuidut ovat nopeasti yleistynyt materiaali tekstiiliteollisuudessa. Niitä käytetään monissa arkipäiväisissäkin tuotteissa sellaisenaan tai sekoitettuna muiden kuitujen kuten puuvillan kanssa. Niillä pyritään saavuttamaan tekstiilille halutut erityisominaisuudet. Synteettiset tekstiilikuidut koostuvat polymeereistä ja eivät pääsääntöisesti hajoa luonnossa sellaisenaan. Niiden kerääntyminen luontoon ja meriin on kasvava ympäristöongelma ympäri maailmaa. Synteettiset polymeerit voivat olla vaarallisia eliöille joutuessaan niiden ruuansulatukseen. Tämän ongelman ratkaisemiseksi on pyritty löytämään biologisia menetelmiä hajottaa synteettisiä kuituja. Erilaisia mikro-organismeja on tutkittu, jotta löydettäisiin organismeja, jotka pystyisivät hyödyntämään synteettisiä kuituja metaboliassaan. Tässä kandidaatin työssä pyrittiin keräämään mahdollisimman kattavasti tietoa tähän päivään mennessä tehdyistä tutkimuksista synteettisten kuitujen biohajoamisesta. Erilaiset kuitulajit ja niiden komponentit määriteltiin ja selvitettiin, millaisella prosessilla niitä valmistetaan. Jokaisen kuidun ja niiden komponenttien biohajoamista selvitettiin mikrobien ja entsyymien avulla. Eniten tutkimustuloksia löytyi polyuretaanikuiduista ja vähiten aromaattisista polyamidikuiduista. Tiedonhankinnan tuloksena voisi todeta, että aihe vaatii yhä tieteellistä lisätutkimusta, jotta löydetään tehokas biologinen keino hajottaa synteettisiä kuituja. Tämä kirjallisuustutkielman tavoite on antaa laaja yleiskuva synteettisten tekstiilikuitujen aiheuttamasta saasteongelmasta ja niiden biologisesta hajottamisesta sekä pyrkiä korostamaan, että kerättyjä taustatietoja tulisi hyödyntää ongelman ratkaisemisessa
Oliveira, Ivy dos Santos. "Integração do tratamento microbiológico com células imobilizadas e tecnologias emergentes (Processos Oxidativos Avançados) para o tratamento de efluentes gerados na indústria têxtil". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/87/87131/tde-11022010-105753/.
The integration of different treatment processes in the degradation of textile wastewater was evaluated using precipitation technique, advanced oxidation processes (AOP) and aerobic biological treatment. AOPs (Ozone/UV and reagent of Fenton/UV) were evaluated in batch experiments according to a factorial planning L18 (Tagushi Method) in function of the flow of ozone, concentration of reagent Fenton, UV radiation, pH and temperature. In the microbiological treatment for continuous process, a reactor of bed fluidized was used with immobilized cells of zeolites some parameters were evaluated such as pre-treatment with AOPs, aeration flow, diluition rate. Satisfactory results were obtained with the physical-chemistry pre-treatment in the reduction of COD and TOC, however it generated an unnecessary amount of sludge. The integration activated sludge/Reagent Fenton was shown quite appropriate, mainly in the removal of the color and turbidity; the variety and frequency of the microorganisms observed during the biological monitorament were suitable with the systems of activated sludge operating efficiently and the use of zeolites as support was shown significant, reaching 63,3 % of immobilization of the microorganism in the support.
Ho, Ping-Wing. "Discrete event simulation for yarn manufacturing processes". Thesis, University of Huddersfield, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315679.
Gallardo, Huamaní Andrea Blanca del Rosario. "Análisis y propuesta de mejora del proceso productivo de una empresa de confecciones de prendas femeninas mediante el uso de herramientas de manufactura esbelta y un sistema tecnológico RFID". Bachelor's thesis, Pontificia Universidad Católica del Perú, 2019. http://hdl.handle.net/20.500.12404/15948.
Tesis