涤纶经编衬衫面料开发

文中从原料选择、编织工艺、染整工艺3个方面阐述涤纶经编衬衫面料的设计思路及开发工艺。选用5.6 tex涤纶在HKS3-M型特里科经编机上开发经编针织衬衫面料,利用改性涤纶、常规涤纶的不同染色性能结合不同编织工艺,设计出素色效果、条纹效果、方格效果三款不同外观的高档经编针织衬衫面料。同时对衬衫面料的编织工艺及染整技术过程中的技术要点进行分析和总结,并对面料的拉伸性能、钩纱、速干性等性能进行测试。结果表明,所开发的3款涤纶经编针织衬衫面料具有手感柔软、弹性适中、速干、抗皱性好等优点,是理想的春夏季衬衫面料。     

多轴向经编复合材料预制件的几何模型

为更好地了解复杂多轴向经编复合材料预制件的细观结构,在对多轴向经编复合材料预制件结构特征进行研究的基础上,通过合理假设,从细观几何角度出发,建立了带有短切毡的多轴向经编复合材料预制件单元结构模型.利用这个模型推导几何结构特征参数和加工工艺参数之间的关系,得出多轴向经编复合材料预制件理论纤维体积分数公式.以不同规格的多轴...     

经编对称花纹织物的开发

结合锦纶纱线的不同亮暗光泽、锦纶与改性可染涤纶的不同染色效果以及织物组织结构设计,在32针/25.4 mm卡尔·迈耶RSE4-1型4梳栉拉舍尔经编机上,开发钻石花纹、菱形花纹、双色花纹3种不同外观效果的经编对称花纹织物。详细介绍织物的编织工艺,包括设备参数、原料选择、垫纱数码、送经量、成品织物参数,以及染整工艺,并总结编织工艺及染整工艺的技术要点。该研究对经编花色织物的设计及生产具有一定的指导意义。     

鞋面用经编麻花效果间隔织物的开发

采用涤纶与阳离子涤纶纱为原料,在双针床贾卡经编机上设计开发具有麻花效果的经编间隔织物。详细介绍织物的设计思路、原料选择、编织工艺和染整工艺,分析整经工艺、编织工艺的技术关键点以及对编织麻花效果经编间隔织物的影响,测试并分析织物的物理性能。结果表明,通过穿纱排纱方式得到的经编麻花效果织物,不仅能够达到采用麻花纱编织的外观效果,而且能够获得多样花型设计,织物外观新颖、性能良好。     

纬编轴向织物的开发与应用

本文介绍了纬编轴向织物的特点及应用,比较了其与经编轴向织物、缝编轴向织物的性能和生产优势,分析了不同类型纬编轴向织物的生产原理及编织工艺,对比了目前纬编轴向织物生产过程中常用原料的特点和应用情况,阐述了影响纬编轴向织物性能的因素和指标,可为纬编轴向织物的开发和应用提供理论支持。     

棉经编纵条纹衬衫织物的开发与性能评价

为开发免烫舒适性衬衫,提高衬衫的美观性和舒适度,首先对棉经编衬衫的纵条纹进行分类;其次阐述棉经编纵条纹衬衫织物的开发工艺,包括形成纵条纹的经编结构、特点及条纹染色工艺;然后开发了3款棉经编衬衫织物,并给出织物的编织参数和成品参数;最后利用灰色近优模型对织物的综合服用性能进行评价。结果表明：3款纵条纹织物图案清晰、线圈平整;其中,采用9.8 tex聚集纺棉纱、5.6 tex普通涤纶DTY和8.3 tex普通涤纶FDY开发的编链组织纵条纹织物的性能最优,为棉经编衬衫织物的图案设计和开发提供理论依据和实践指导。     

多轴向经编织物的防刺性能

 为了研究多轴向经编织物的防刺性能,实验选用了不同规格的多轴向经编织物进行准静态防刺性能测试,通过对实验结果的分析研究了多轴向经编织物的结构参数对防刺性能的影响,以及多轴向经编织物的防刺特性;并且通过SEM观察多轴向经编织物在穿刺时织物断裂口纤维的截面形貌,分析了多轴向经编织物在防刺过程中的能量吸收机理。结果表明织物的体积质量与最大穿刺力存在正相关关系,体积质量增加,织物的最大穿刺力增大;而且提高经编多轴向织物的表面紧密度,有利于提高织物的防刺性能。在多轴向经编织物中使用较细的纱线编织而成的四轴向织物的防刺性能最佳,能够很好地吸收穿刺能量,抵抗刀刃切割。     

经编涤纶呢染整工艺

国产Z303经编机用二梳节编织涤纶起绒织物酷似毛呢,具有挺括、尺寸稳定性好、易洗快干,洗后免烫不皱等特点。我厂于1982年底开始对经编起绒织物涤纶呢进行了探索,该产品在国内市场上试销50,000米后已正式投入生产。通过近二年的实践认识到经编涤纶低弹丝起绒织物的编织、染整和起绒工艺对织物的绒毛长度、绒面丰满度、成品门幅     

竹炭纤维经编内衣面料的开发

选择竹炭纤维、锦纶半光丝、氨纶为原料,开发高档竹炭纤维经编内衣面料。阐述该面料的编织工艺以及在编织中遇到的问题和解决方法。并以涤纶和锦纶经编平布作为对比样,测试各经编面料的紫外线屏蔽性能、负离子发射性能、润湿性能和顶破性能,结果表明,竹炭纤维经编面料各项性能优良,适合制作高档内衣面料。     

国内外多轴向经编设备的研发状况

阐述了多轴向经编技术的发展现状以及多轴向经编机的工作原理。分别介绍了国外的利巴(Liba)Copcentra MAX 3 CNC型设备和卡尔.迈耶(Karl Mayer)Malimo Multiaxial型设备,以及国内的常州润源RCD-l型多轴向经编机和常州第八纺机GE2-M2型多轴向经编机的性能特点。指出:多轴向编织正在朝着自动化、人性化、铺纬准确等方向发展。我国多轴向经编设备的生产企业及从业人员要积极应对,努力开发具有高附加值、高技术含量的有自主知识产权的多轴向经编机。     

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