浅析卷烟包装箱YP11型封箱机改造

在卷烟厂的自动化生产过程中,YP11型装封箱机是被广泛运用的自动封箱设备。YP11是根据德国FOCKE公司465/329B装封箱机转让技术进行转化设计的,可靠性高。但是随着卷烟厂对工作效率、包装质量、回收应用等各方面的需求不断发生变化,YP11型封箱机对提高卷烟厂的生产能力、效率质量等方面已经不能发挥更好的作用了。所以文章从提高缺条检测装置的准确率、改进胶带纸粘贴的外观质量、对烟箱进行回收应用三方面探讨如何改造YP11型封箱机。     

缺条检测在装封箱机上的应用研究

装封箱机完成50条烟的装箱,是卷烟生产的最后一道工序。装封箱生产过程有着严格的工艺质量要求,但是缺条在生产过程中是不能被忽视的严重质量问题。为了有效地避免缺条箱烟的产生,卷烟生产企业均在生产现场配备了缺条检测装置。现有的缺条检测种类繁多,在使用过程中存在或多或少的问题。了解现有缺条检测的工作原理与使用特点对生产厂家因地制宜地选择缺条检测具有十分重要的指导意义。在同一生产线配合使用两种类型的缺条检测会更有效地避免箱缺条的产生。     

提高SENZANI装封箱机缺条检测系统性能

分析SENZANI装封箱机的工作流程,查找因为设备自身原因导致缺条产生的具体因素,采取更换外围检测器类型、增加检测项目、增加检测器自检系统、推进器电机增加变频器和设计缺条控制程序等措施,实现对SENZANI装封箱机缺条检测系统的改进。     

件烟封箱胶带端部压紧装置的设计

卷烟工业企业通常使用装封箱机对条烟进行自动装箱及封箱。在实际生产过程中,YP11型装封箱机对条烟进行装箱及封箱后,存在封箱胶带端部粘贴不牢、翘边等现象,产生箱装外观质量缺陷。同时,该质量缺陷产品在后续的输送及运输过程还会出现封箱胶带完全裂开而导致条烟散落的现象。通过在件烟输送通道两侧设计安装件烟封箱胶带端部压紧装置,解决了件烟封箱胶带端部粘贴不牢、翘边的问题。应用效果表明,设计安装的件烟封箱胶带端部压紧装置运行可靠,提高了产品质量及生产效率。     

香烟包装机组电气控制系统研究

通过对香烟包装生产线卷接机组的供料成条、卷制成型、接装和重量控制装置的电气控制系统工作原理及协同工作进行分析研究,得出卷接机组电气控制系统对提高烟支质量有着重要作用,并结合生产实际情况对卷接机组电控系统进行改进,实现了香烟卷接生产的自动控制,保证了产品生产质量。     

基于SIWAREX FTA称重技术的烟箱缺条检测及剔除系统设计

为防止因卷烟包装过程中装封箱机烟箱缺条质量事故给烟草企业造成不良影响,通过分析烟箱缺条的原因,比较现有的烟箱缺条检测方法,设计了一种基于物联网平台的分牌号的集成化称重式烟箱缺条检测及剔除系统。采用条形码技术、西门子S7 300 PLC和SIWAREX FTA称重模块等技术,改进了传统称重式系统的漏检、误检等缺陷,烟箱缺条检出率提高至98%,误检率则降低至5‰以内。该系统可有效减少烟箱缺条事故发生,并对产品质量实现了追踪、追溯,也为烟箱缺条质量事故认定提供了真实、准确的证据。     

YP11A型装封箱机纸箱歪斜报警装置的设计

根据烟草行业降本增效的管理方针,要求对件烟纸箱进行回用生产。目前行业大多数卷烟工厂使用的是YP11A型自动装封箱机,当使用回用纸箱被推送到成型工位时,因回用纸箱存在不同程度破损导致受力不均,容易造成纸箱歪斜。歪斜的纸箱在烟条推送进箱时就会造成烟条触皱。本文通过对YP11A型自动装封箱机纸箱成型部位的工作原理进行研究分析,设计一套检测装置来及时检测出歪斜的纸箱并停机报警,杜绝条烟发生外观质量缺陷流入市场,确保了产品质量,提升了品牌竞争力和企业形象。     

包装车间主要机台常见问题及维护保养

在包装车间连续生产过程中,常常会出现一些机械故障,如果不能及时的进行调整和排除,将会造成整条生产线的效率低下,各种损耗随之增高,产品质量也将会受到一定的影响。下面就包装车间各主要机台常见故障以及维护与保养,作一下简单介绍。     

热熔胶系统在YP13条烟装封箱机上的应用

为解决YP13条烟装封箱机用胶带封箱导致封箱不紧实、无法满足机器人堆垛系统要求等问题,采用热熔胶技术对条烟装封箱机进行了改进:1增加了热熔胶系统,包括ProBlue热熔胶机及配套的输胶管和喷枪。2对热熔胶系统的控制系统和人机界面进行了集成设计。3经过测试,在烟箱侧面对4个小压盖各喷射两条40 mm长的胶线,工作温度为165℃,喷胶相位为86~91°和133~138°,喷胶效果最佳,可以将成品件烟的大压盖与小压盖牢固粘接。应用效果表明:有效解决了机器人将成品件烟堆垛时存在的外形超限、成品件烟被拉开、条烟散落等问题,故障次数由平均36次/周减少为0,保证了卷烟生产的顺利进行。     

香烟包装生产线与包装设备的柔性化改进

为提高香烟包装生产的自动化程度,在香烟包装工艺的基础上,建立香烟包装生产线物流量变模型。结合技改项目的实施对香烟生产线量变环节的烟丝交换站、滤棒交换站、条烟输送、条烟存储器、柔性滤棒输送等包装设备进行具体改进;改进后能够减少烟丝、滤棒输送通道的拆分时间,减少生产线设备停机率,提高生产线的运行效率。     

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.     

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.     

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.     

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.     

Textural Properties of Cold-set Gels Induced from Heat-denatured Whey Protein Isolates

A 9% whey protein (WP) isolate solution at pH 7.0 was heat-denatured at 80°C for 30 min. Size-exclusion HPLC showed that native WP formed soluble aggregates after heat-treatment. Additions of CaCl2 (10–40 mM), NaCl (50–400 mM) or glucono-delta-lactone (GDL, 0.4–2.0%, w/v) or hydrolysis by a protease from Bacillus licheniformis caused gelation of the denatured solution at 45°C. Textural parameters, hardness, adhesiveness, and cohesiveness of the gels so formed changed markedly with concentration of added salts or pH by added GDL. Maximum gel hardness occurred at 200 mM NaCl or pH 4.7. Increasing CaCl2 concentration continuously increased gel hardness. Generally, GDL-induced gels were harder than salt-induced gels, and much harder than the protease-induced gel.     

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.     

Occurrence of bisphenol-F-diglycidyl ether (BFDGE) in fish canned in oil

The levels of bisphenol-F-diglycidyl ether (BFDGE) were quantified as part of a European survey on the migration of residues of epoxy resins into oil from canned fish. The contents of BFDGE in cans, lids and fish collected from all 15 Member States of the European Union and Switzerland were analysed in 382 samples. Cans and lids were separately extracted with acetonitrile. The extraction from fish was carried out with hexane followed by re-extraction with acetonitrile. The analysis was performed by reverse phase HPL C with fluorescence detection. BFDGE could be detected in 12% of the fish, 24% of the cans and 18% of the lids. Only 3% of the fish contained BFDGE in concentrations considerably above 1mg/kg. In addition to the presented data, a comparison was made with the levels of BADGE (bisphenol-A-diglycidyl ether)analysed in the same products in the context of a previous study.     

Contribution of European research to risk analysis

The European Commission's, Quality of Life Research Programme, Key Action 1—Health, Food & Nutrition is mission-oriented and aims, amongst other things, at providing a healthy, safe and high-quality food supply leading to reinforced consumer confidence in the safety of European food. Its objectives also include the enhancing of the competitiveness of the European food supply. Key Action 1 is currently supporting a number of different types of European collaborative projects in the area of risk analysis. The objectives of these projects range from the development and validation of prevention strategies including the reduction of consumers risks; development and validation of new modelling approaches; harmonization of risk assessment principles, methodologies, and terminology; standardization of methods and systems used for the safety evaluation of transgenic food; providing of tools for the evaluation of human viral contamination of shellfish and quality control; new methodologies for assessing the potential of unintended effects of genetically modified (genetically modified) foods; development of a risk assessment model for Cryptosporidium parvum related to the food and water industries; to the development of a communication platform for genetically modified organism, producers, retailers, regulatory authorities and consumer groups to improve safety assessment procedures, risk management strategies and risk communication; development and validation of new methods for safety testing of transgenic food; evaluation of the safety and efficacy of iron supplementation in pregnant women; evaluation of the potential cancer-preventing activity of pro- and pre-biotic ('synbiotic') combinations in human volunteers. An overview of these projects is presented here.