经编泳衣面料的数码印花工艺实践

采用数码印花工艺对锦氨经编泳衣面料进行印花,详细分析了来样处理、打底上浆、数码打印、汽蒸、水洗和烘干等各个印花工序的工艺,并对加工后产品的测试指标与传统圆网印花进行了对比。结果表明,数码印花产品参数均达到传统印花指标,且缩水率减少、手感较好;同时,数码印花工艺流程大大缩短,能够实现快速反应,低污染、低噪声,是一种绿色环保印花工艺。     

微言信语

正国际网印及数字化印刷展:数码直喷印花具有提高印花速度与产量、比传统印花色域广泛、色彩转化饱和度效果更逼真、印花整体分辨率更高、打印介质更广、打印材料不受限、可实现批量打印与生产等优势,结合当下的互联网时代,数码直喷印花被广泛用于多种电子商务产品中,越来越多的产品都开始完全采用这种新工艺。未来的数码印花行业将会愈发成熟,结合     

谈谈数码印花图案设计及制作

正目前,随着我国纺织服装行业发展步入新常态,数码印花行业的优势更加显而易见,发展前景被业内人士广泛看好,众多企业大举转型进军数码印花行业。然而,在实际生产过程中,数码印花图案清晰度的问题已成为众多数码印花企业的掣肘。众所周知,在数码印花打印过程中图案的清晰程度决定数码喷印效果的好坏,可以说图案在数码印花中的比重比传统印花还要重要。在数码印花设备和墨水等硬件设施固     

针织物印花图案设计与数码印花工艺研究

文中从数码印花图案设计原则、图案来源及图案类别3方面介绍了针织物数码印花图案的设计。并阐述了针织物数码印花面料整体应用、数码印花面料局部应用及多种数码印花拼接应用。从半制品要求、预处理要求、墨水特点、色彩管理、打印技术及后处理工艺的角度进行阐述,以便探讨影响针织物数码印花的工艺因素。     

一款高速数码滚筒印花机

数码纺织印花也叫数码喷墨印花,是利用国际上最先进的数字化喷墨技术在纺织品表面实现即时的印花过程,简称数码印花。高速数码滚筒印花机是高速度、宽幅面、生产型的纺织品数码印花设备,是为解决传统纺织品印花工艺及现有数码印花工艺的不足而研发的。     

酸性墨水在纺织品转移印花中的应用

<正>目前,数码转移印花的工艺技术设备如繁星点点,处处涌现,而市场上的尼龙面料印花主要采用丝网印花、冷转移印花、数码直喷印花等几个方式。采用平网或圆网印花,对于一些颜色比较复杂和精致的图案难于表现,另外在印花过程中污水较多。采用冷转移印花,是将面料湿润后在常温下转移印花,在转印过程中对面料的湿润程度敏感,一旦在转印过程中出现湿润程度变化,其印花色差往往令人不能容忍。数码直喷印花是业界同仁努力的方向,这是在上浆处理过的面料上喷墨打印酸性墨水,再汽蒸发色和洗涤烘干,这种工艺可以     

数码印花墨水性能和预处理对纺织品印花效果的影响

<正>数码印花就是将数码喷墨打印技术应用于纺织品印花,把花样图案通过数字形式输入计算机,经过计算机印花分色描稿系统(CAD软件)编辑处理,再由计算机控制将含有染料的专用墨水在压缩空气的驱动下,经由喷墨印花机的喷嘴喷射到纺织品上形成所需图案。数码喷墨印花技术彻底改变了纺织品传统的印花生产方式,省去了描稿、制片、制网、雕刻等一系列复杂工艺及相应设备,通过电脑可以很方便地设计和核对花样及图案,提高分辨率和准确得到花     

数码印花——纺织品印染行业转型升级新动力

<正>数码印花发展现状及新技术介绍数码印花技术作为纺织品印花新技术,在发展初期,就以无需制版、快变化、色彩丰富、渐变以及节能环保等诸多优点引起了行业内的高度关注。但是在数码印花发展初期,打印速度慢、印花成本高和印花工艺不完善等因素一直是制约数码印花快速发展的主要障碍。近些年,随着数码印花工艺和配套设施的不断发展、完善,以及技术的突破和革新,数码印花设备在精度、打印速度以及稳定性方面已经取得了长     

RICOH高速、宽幅喷墨打印机

<正>数码印花技术是把传统的技术和数码打印技术相结合以无制版形式印制彩色图像和图案的一项高新技术,给纺织印染行业带来了一个全新的概念,其先进的生产原理及工艺,给纺织印染带来了一个前所未有的发展机遇。数码喷墨印花技术经过近几年的发展,已经     

飞行船:全球首创双面数码印花机——让鄂尔多斯翘首以盼的机器

<正>有没有一种印花技术,可以将传统印花与数码印花的优势集于一身?全球首创的纺织印花革命性产品——飞图双面数码印花一次成型技术为我们找到了答案。"飞行船"企业在很早前就有了双面打印技术,但是在纺织界却鲜为人知,也是从2016年开始,由于客户的需要,飞行船采用之前广告双面打印机的原理,发明出了全世界第一款双面数码印花     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

An internet compendium of analytical methods and spectroscopic information for monomers and additives used in food packaging plastics

An internet website (http://cpf.jrc.it/smt/) has been produced as a means of dissemination of methods of analysis and supporting spectroscopic information on monomers and additives used for food contact materials (principally packaging). The site which is aimed primarily at assisting food control laboratories in the European Union contains analytical information on monomers, starting substances and additives used in the manufacture of plastics materials. A searchable index is provided giving PM and CAS numbers for each of 255 substances. For each substance a data sheet gives regulatory information, chemical structures, physico-chemical information and background information on the use of the substance in particular plastics, and the food packaging applications. For monomers and starting substances (155 compounds) the infra-red and mass spectra are provided, and for additives (100 compounds); additionally proton NMR are available for about 50% of the entries. Where analytical methods have been developed for determining these substances as residual amounts in plastics or as trace amounts in food simulants these methods are also on the website. All information is provided in portable document file (PDF) format which means that high quality copies can be readily printed, using freely available Adobe Acrobat Reader software. The website will in future be maintained and up-dated by the European Commission's Joint Research Centre (JRC) as new substances are authorized for use by the European Commission (DG-ENTR formerly DGIII). Where analytical laboratories (food control or other) require reference substances these can be obtained free-ofcharge from a reference collection housed at the JRC and maintained in conjunction with this website compendium.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

Chlorohydrins of bisphenol A diglycidyl ether (BADGE) and of bisphenol F diglycidyl ether (BFDGE) in canned foods and ready-to-drink coffees from the Japanese market

BADGE.2HCl and BFDGE.2HCl were determined in 28 samples of ready-to-drink canned coffee and 18 samples of canned vegetables (10 corn, 5 tomatoes and 3 others), all from the Japanese market. HPLC was used as the principal analytical method and GCMS for confirmation of relevant LC fractions. BADGE.2HCl was found to be present in one canned coffee and five samples of corn, BFDGE.2HCl in four samples of canned tomatoes and in one canned corn. No sample was found which exceeded the 1mg/kg limit of the EU for the BADGE chlorohydrins. However the highest concentration was found for the sum of BFDGE.2HCl and BFDGE.HCl.H₂O at a level of 1.5mg/kg. A Beilstein test confirmed that all cans containing foods contaminated with BADGE.2HCl or BFDGE.2HCl had at lest one part coated with a PVC organosol.     

European priorities for research to support legislation in the area of food contact materials and articles

A strong science base is required to underpin the planning and decision-making process involved in determining future European community legislation on materials and articles in contact with food. Significant progress has been made in the past 5 years in European funded work in this area, with many developments contributing to a much better understanding of the migration process, and better and simpler approaches to food control. In this paper this progress is reviewed against previously identified work-areas (identified in 1994) and conclusions are reached about future requirements for R&D to support legislation on food contact materials and articles over the next 5 or so years.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the