真空镀铝内衬纸及其在烟包上的应用

卷烟内衬纸是包装于卷烟烟支和烟包小盒之间的纸张,主要有两种：压延铝箔复合内衬纸（以下简称“复合内衬纸”）和真空镀铝内衬纸,其作用主要是防潮,保持香味等。由于复合内衬纸工艺简单,对卷烟包装设备的要求也较低,加之真空镀铝内衬纸目前存在包装的折叠精度不够．成本相对偏高等因素．目前国内烟草行业基本上都是采用复合内衬纸,而国外卷烟内衬纸基本上都是使用真空镀铝内衬纸。     

不同类型烟用内衬纸的性能对比分析

烟用内衬纸是卷烟产品的重要包装材料,起到保护卷烟和美观的作用。本文对真空直镀内衬纸、转移镀铝内衬纸和涂布内衬纸这3种新型内衬纸产品的阻隔性、上机适用性、环保与卫生、外观等性能进行了简要分析和对比。     

新型涂布内衬纸的性能与应用分析

新型涂布内衬纸,是以水性丙烯酸酯树脂和云母粉复合溶液为面层涂布液,琼脂水溶液为背层涂布液,经过背涂和面涂两次涂布工序涂覆于原纸的两侧而制得。文中,对该涂布内衬纸的阻气性和阻湿性进行了测试,发现涂布内衬纸的阻气和阻湿性能与真空直接镀铝内衬纸在同一水平,可以满足卷烟包装的需求;分析了涂布内衬纸中挥发性有机化合物（VOCs）和重金属含量,含量均在较低水平,很好满足有关行业标准要求;同时,对上机适用性进行了分析,该内衬纸具有上机应用的普遍可行性;最后,分析指出涂布内衬纸具有良好市场应用前景。      

单头转移内衬纸组合折叠成型技术在GDX2包装机组中的应用

单头转移内衬纸替代复合铝箔纸应用于GDX2包装机组时,由于单头转移内衬纸铝层过薄、可塑性差、弹性大,衬纸成型易出现折叠后因回弹较大而造成内衬纸烟包折皱、折烂内衬纸等现象,增加了设备停机次数.为此,通过对内衬纸活动折叠、固定折叠两种折叠方式研究,改进了部分折叠零件,优化了活动折叠装置的调整间隙,采用“活动折叠+固定折叠”的组合方式完成单头转移铝箔纸在GDX2机组的折叠成型.活动折叠装置先按内衬纸烟包成型要求进行折叠,形成固定的折痕,减小了内衬纸的张力,固定折叠装置按活动折叠装置预设的折叠形式,完成内衬纸烟包的全部成型工作.试验结果表明:组合折叠成型技术折叠性能好,稳定性高,对材料适应性较强,易于维护,完全能够满足单头转移内衬纸的成型要求.改进后GDX2包装机组因内衬纸折叠成型引发的设备停机故障基本消除,不同内衬纸的换牌时间减少3.6 h/台·月,设备有效作业率提高10％,有效保证了内衬纸在成型过程中的可靠性和稳定性.     

烟用无铝内衬纸的制备技术与研究进展

无铝内衬纸由于其透气度低、防水性能和阻隔性能较好、成型度良好等特点,是具有保香防潮功能要求的卷烟包装的理想材料。本文从烟用无铝内衬纸的开发背景出发,论述了无铝内衬纸开发和应用的必要性,总结了常用烟用内衬纸的类型和特点,归纳了烟用无铝内衬纸的基本特性,对比了现有的烟用无铝内衬纸制备技术并总结其优缺点,展望了烟用无铝内衬纸未来制备技术的发展趋势。     

直镀铝烟用内衬纸及其发展现状

介绍了烟用内衬纸的分类,直镀铝烟用内衬纸的环保、防伪特性,分析了直镀铝烟用内衬纸现状和发展前景,并提出了相关思考。     

浅谈真空镀铝内衬纸

介绍了真空镀铝内衬纸的保质性能、环保性能、上机适应性以及直镀纸和转移纸的工艺、特点及鉴别方法。     

真空镀铝内衬纸在FOCKE703包装机中的应用与改进

为解决真空镀铝内衬纸在FOCKE703包装机中因铝层厚度薄、可塑性差、回弹力大等,导致折叠成型过程中烟包内衬纸易出现褶皱等问题,通过分析内衬纸输送系统的组成及影响烟包包装品质的因素,对折叠成型的相关机械部件及电气元件进行了改进:1调整压花辊筒的压力,减小折叠回弹力;2对内衬纸拉口短刀进行改进,解决内衬纸拉片易脱落问题;3改进电气检测元件,保证内衬纸左右偏移量在合理范围内。应用效果表明,改进后单班次平均内衬纸折叠次品烟包数量由165盒减少到28盒,设备有效作业效率由78.3%提高到84.2%,设备故障停机次数明显减少,有效提高了真空镀铝内衬纸在包装过程中的稳定性和可靠性。     

镀铝纸

◆环保型真空镀铝纸浙江爱迪尔包装股份有限公司环保型真空镀铝项目,总投资4.5亿元,采用欧美最新生产工艺,2001年被国家经贸委授予国家级真空镀铝包装材料绿色环保生产基地。公司的真空镀铝产品按生产工艺分为直接镀铝法和转移镀铝法两种;按品种分为普通镀铝纸和全息激光防伪镀铝纸两大类。主要产品有酒标纸、卷烟内衬纸、食品包装纸、礼品包装纸和镀铝卡纸等。2003年初,西南地区生产规模最大、技术工艺最先进的喷镀纸生产项目签字仪式在云南玉溪举行。此项目由玉溪中通公司和美国金星国际投资股份有限公司合资,总投资1.8亿元人民币。其中金…     

镀铝转移纸生产过程中的质量控制

近年来,我国政府对环境保护越来越重视,社会对包装材料也有了新的认识,镀铝转移纸作为一种新型环保包装材料得到了广泛运用。镀铝转移纸的主要表现形式是镀铝转移啤酒标签纸、镀铝转移卷烟内衬纸、镀铝转移包装卡纸、镀铝转移食品包装纸等。     

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