ZLGA801型分条整浆联合机的应用

探讨整浆联合机的性能特点及其在生产中的应用.通过分析ZLGA801型分条整浆联合机筒子架、浆槽、烘燥机构、传动系统、分条卷绕机构、张力补偿架等机构的特点,对纯棉和涤棉混纺两个品种进行整经、上浆实践,认为:整浆联合机适用于小批量、多品种的色织物的生产;整浆联合机的浆槽及烘筒的纱线覆盖系数较低,有利于设备高速运行;整浆联合机采用的低温上浆工艺解决了浆纱容易产生浆皮的缺点.     

分条式整浆联合机的试制与使用

一、分条式整浆联合机的适应性 色织行业的生产具有小批量、多品种、组织复杂、色泽繁多的特点。准备工序通常可采用轴经上浆。但是,对于某些特殊的织物品种,如色纱繁多、排列复杂、色泽近似、难以区分的姐妹色一类织物和双轴织物的花经副轴以及经纱根数在500根以下乃至数十根的产品,轴经上浆就显得无能为力,而分     

色织物分轴整经上浆的实践

本文对分条整、浆联合机,分条整经、单轴上浆,分批整经、并合轴经上浆等三种色织浆纱工艺进行了分析比较,并着重介绍了后一种浆纱工艺。根据色织的特点,用实例阐述了分层排花、分色分层排花、整经浆纱排花、双轴品种排花等四种排花型的方法。     

LSGA600型小样整浆联合机的性能与应用

介绍了LSGA600型小样整浆联合机的主要机构和性能特点.通过对几个品种进行整浆试验的结果表明,LSGA600型小样整浆联合机上浆效果基本达到常规浆纱机的水平,在开发新产品方面具有时效性强、适应市场灵活多变需求的特点,有利于提高企业快速反应能力.     

长丝使用的上浆机

日本的上浆机与别国比较,不同的在于对长丝与短纤纱上浆,机型显著不同,分别有其各自的专用机械。对长丝上浆采用两种机械,即分层烘燥式全经上浆机和整浆联合机。这两种机械虽然各有优缺点,但确系日本长丝织物发展的动力。据说过去的整浆联合机比全经分层上浆机容易控制,但生产能力较低,最近逐渐地出现了高速整浆联合机,操作也相当简便。目前逐渐认为这种整浆联合机已成为长丝上浆机的主流。在三、四年前,     

无拈尼纶长丝上浆-并轴新工艺

随着我国化纤生产的日益增长,急需作好生产设备的配套工作。上海第六丝织厂根据丝织三厂等单位无拈尼纶丝加工的经验,对本厂的整浆联合机进行了技术改造,解决了三十多个技术问题,初步搞成了上浆-并轴新工艺,并投入试生产。 该厂自络-拈-整改为整浆联合工艺后,生产效率有了较大提高。但整浆联合机的热风干燥效率较低,车速因而无法提高。现在在整浆联合机烘房后增加三只锡林,经丝烘干后卷在     

全棉色织经起花双层织物的开发

总结全棉色织经起花双层织物的生产要点。经纱采用6种色纱,纬纱采用5种色纱;介绍了经纬纱排列顺序、织物纹板图、穿综穿筘规律;采用LSGA600型整浆联合机,上浆率控制在7%,含固率控制在9%;采用GA747型剑杆织机双织轴生产,采用晚进剑、早开口工艺,优化后梁高度、上机张力等,最终使产品顺利生产,织机效率达90%。认为:开发的全棉色织经起花双层织物产品附加值较高,适合做春秋衫面料。     

分条整浆联合机低温上浆的实践

我厂生产的13×13色织涤棉府绸织物,一直采用绞纱上浆的方法,生产效率低,上浆质量差,造成纱线起毛,上机后开口不清,严重影响产品质量和布机效率。为此在G121分条整经机上进行了改造,试制了三台分条整浆联合机,采用以PVA为主加入少量CMC的浆料新配方,和低温上浆的工艺路线,取得了良好的生产效果。     

分条经浆联合机

上海色织二厂为了适应小批量、多品种、组织复杂、色泽繁多的色织物生产,在吸取外地兄弟单位的经验基础上,自行改装成功了一台“分条经浆联合机”。经过一段时间的生产实 践表明:设备性能较好,浆纱和织轴质量良好,并能适应原来轴经轴浆所不能生产的品种,如:双织轴织物的花经付轴,头份在500根以下,甚至数十根,也能上浆成轴;某些经纱色泽繁多、排列复杂、姐妹色一类的色织物,也不愁浆纱排花型和穿综分不清了;对新品种小量试制,也较机动灵活;且为色织生产穿练工序的机械化、自动化,提供了有利的条件。     

天丝/黏胶/聚酯色织条纹布的设计与生产

设计并生产了天丝/黏胶/聚酯色织条纹布.对织物规格、色纱循环、外观及织物组织等进行了设计.通过试验确定工艺参数为:络筒速度1 100 m/min,络筒张力5 cN,筒子卷绕密度0.39 g/cm3;整浆联合机车速40 m/min,上浆率15％±0.5％,回潮率7％±0.5％;织机开口时间300°,开口量30°,车速70...     

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.     

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     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press