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1.
潍坊凯信机械有限公司研发的HC-1000型真空圆网卫生纸机在保定开机成功。该真空圆网卫生纸机结构简单、操作方便、设计紧凑节省空间,适于生产高质量低定量的卫生纸,同时具有能耗低、生产及维护成本低等特点,在生活用纸领域有着大量的应用。其中流浆箱和真空网笼是真空圆网卫生纸机的关键设备,其设计及制造质量关系到成纸的品质。本文就HC-1000真空圆网卫生纸机流浆箱、真空网笼的结构与设计进行阐述。  相似文献   

2.
白雯锐 《中国造纸》2023,42(2):124-128
本文主要对卫生纸机上浆系统设计的具体要求,常见的工艺流程、设备及管道的设计要点进行了简要的介绍,为卫生纸机上浆系统的设计提供有益的参考。  相似文献   

3.
结合目前新型高档卫生纸机的白水系统设计过程,系统地介绍了卫生纸机白水系统设计的基本过程和原理,并对多盘过滤机白水回收系统的工程设计关键点进行详细阐述,可为相关设计人员及造纸厂工艺人员提供参考。  相似文献   

4.
一句话新闻     
《生活用纸》2013,(7):14-14
绵阳超兰签订2台潍坊凯信真空圆网卫生纸机 2013年1月,四川I省绵阳超兰卫生用品有限公司签订2台由潍坊凯信机械有限公司制造的HC-800型真空圆网卫生纸机。这两台纸机均为幅宽2,820mm,设计车速900m/min,产能1万t/a,计划分别于今年11月和明年8月投产。  相似文献   

5.
介绍了以商品木浆为原料的HC-1000真空圆网卫生纸机的工艺流程,阐述了工艺流程中选用设备和采用节能降耗的措施。  相似文献   

6.
一句话新闻     
◎宝拓卫生纸机落户四川 宝拓造纸设备有限公司的2台卫生纸机落户四川蜀邦实业有限责任公司。其中,第1台卫生纸机已于2013年1月21日上午进行投料运行试机仪式,并一举成功!该纸机为真空圆网型,幅宽2.860mm,车速800m/min。第2台同型卫生纸机预计于2013年投产。  相似文献   

7.
戴辉 《生活用纸》2012,(22):45-48
1前言 华林机械成立于2003年,是山东昌华造纸机械有限公司的子公司,专业从事卫生纸机的开发和推广乙华林机械致力于开发和推广适合中国国情的卫生纸机换代产品和新产品。前期产品主要定位为以非木材纤维为主要原料的中、低速纸机,随着市场需求的发展,2009年开始卫生纸机的研发重点逐渐转向新月型成形卫生纸机、真空圆网卫生纸机等中高速机型。  相似文献   

8.
由辽阳慧丰造纸技术研究所设计制造的AL-FORM V700w2900真空圆网卫生纸机于2013年10月在湖北真诚纸业有限公司开机,现车速稳定在600m/min,日产量26t。  相似文献   

9.
纸机真空系统的工艺设计   总被引:1,自引:0,他引:1  
分析了真空泵的选型比较,阐述了现代化纸机真空系统特点、设备布置、真空管道的设计原则.介绍南纸#5纸机真空系统设计情况.  相似文献   

10.
2012年2月,东莞市中桥纸业有限公司HC-800型高速卫生纸机试车成功,这是潍坊凯信机械有限公司自主设计制造的第一台车速800m/min的真空圆网高速卫生纸机。机械结构如下图1所示。  相似文献   

11.
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.  相似文献   

12.
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.  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
17.
Capillary electrophoresis (CE) and polarized light microscopy (PLM) were utilized in the detection of the adulteration of locust bean gum with guar gum. For CE analyses, standards of locust bean and guar gums were extracted with 30% CH3CN, removing the residual proteins from the gum matrix. A 8.75 mM NaH2PO4-20.6 mM Na2B4O7 buffer, pH 9, was used to separate these proteins and to identify marker proteins that were present in the guar gum. These markers did not co-migrate with components in the extracts of mechanically processed locust bean gum, and are used as indicators of adulteration. Using PLM with toluidine blue and iodine staining techniques, unadulterated locust bean gum samples were distinguished from mixed samples through the differential staining of components in locust bean versus guar and tara gums. These experiments in the use of CE and PLM provide orthogonal and complementary methods for the verification of 'true' positives and the elimination of 'false' positives.  相似文献   

18.
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.  相似文献   

19.
An investigation is described in which various polyfunctional compounds were applied to wool in attempts to stabilize the temporary improvements in wrinkle-recovery brought about by ‘annealing’. Several reactive systems involving formaldehyde were found to produce the desired permanently improved wrinkle-recovery.  相似文献   

20.
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.  相似文献   

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