Properties of Novel Reactive Transfer Printing of Silk

The novel reactive transfer printing of silk was carried out through a hot-press adhesion and steaming. The special transfer paper was prepared by coating the paste mainly containing hot-melt adhesive hlgh-substituted hydroxypropyl cellulose （H-HPC） and printing thickener earboxymethyl cellulose （CMC）. The effects of each ingredient in the paste on color yield of the prints and dye penetration were investigated. The major results indicate that, color yield is chiefly governed by the adhesion extent imparted by H-HPC, the type of fixing alkaline agent, and the content of urea. Trichloroacetic acid （TCAA） as the fixing alkaline agent and adding 5% urea can enhance the color depth obviously. Dye penetration depends on the coating quantity on the transfer paper, the contents of urea and dicyandiamide. The printed silk possesses a higher color yield, color fastness of grade 3 or above, clear sharpness, and good handle when the paste contains 3 % H-HPC, 0. 7 % CMC, 3 % TCAA, 5 % urea, 3 % dicyandiamide, and 0. 5 % physical sorbent nano-silica.

Estimating the costs of one hectare of poplar planting and supplying wood required for producing various types of paper in Iran

In Iran, due to abundant restrictions on harvesting wood from northern forests by implementing the preservation project and also lack of possibility for sufficient wood production, development of the area of planting poplar is quite inevitable. Poplar wood properties have special importance to produce many wood production, particularly pulp and paper. Paper factories are the major consumers of poplar wood at the global level and this is because of unique morphological, physical, mechanical and technological properties of poplar wood. Therefore, regarding the importance of using this species in making various printing and writing paper, packaging or carton, cardboard and newsprint, in this study, costs of poplar production in one hectare including planting and harvesting were examined and determined. Then, based on conversion coefficients of FAO, required round wood, productivity and the cost of poplar wood were calculated for the producing various kinds of paper. The results indicate that carton and cardboard paper or packaging allocate the lowest cost and highest return, while printing and writing paper had highest cost and lowest return in terms of poplar wood supply needed for paper production.

Preparation of Water Based Polymeric Binders for Paper Surface Coating

Binder is an important ingredient in pigment coating as it is used to impart adhesion, gloss and flexibility to the dried film as well as binding the pigment particles together. The aim of this work was to synthesize polymeric binders via radical copolymerization of acrylic acid (AA) with maleic anhydride (MA) and with 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS). The chemical structures of the prepared binders were characterized by FTIR and 1HNMR analysis. The rheology of the prepared binders was also investigated. The prepared binders were applied in paper coating suspensions and their effects on optical, mechanical, and physical properties in addition to printability of the coated paper were studied. The results showed that acrylic maleic anhydride copolymers increased the adhesion, gave good film forming properties and good surface activity which increased print quality of paper coating. It was also found that MA/AA (50:50) and the blend between MA/AA (50:50) with AMPS:AA (30:70) have more suitable coating film properties and have highest pick resistance which is resemble to the commercial binder.

A breathing A4 paper by in situ growth of green metal-organic frameworks for air freshening and cleaning

Surface modification of natural cellulose fibers with nanomaterials is an effective strategy for producing functional textiles for multiple applications.A4-sized printing paper is a commonly used,cheap,and easily acquirable office supply which is mainly made of cellulose fibers.Here,we report green and simple nanofabrication of A4 paper to endow it with high capability for fragrance encapsulation and sustained release,and strong adsorption to indoor air pollutants.The method utilizes the sugar molecule of cellulose for in-situ growth ofγ-cyclodextrin(γ-CD)metal-organic frameworks(MOFs)on A4 paper.The obtainedγ-CD-MOF/A4 nanocomposites have superior specific surface area and high porous structure.Theγ-CD-MOF/A4 nanocomposites can effectively encapsulate fragrant molecules through host-guest interaction.Theγ-CD-MOF/A4 nanocomposites also show strong absorption capability to formaldehyde and carbon dioxide through the formation of hydrogen bonding and chemical bonds.Theseγ-CD-MOF/A4nanocomposites combine the advantages of both A4 paper andγ-CD-MOF,which can be used in indoor air freshening and cleaning.

高光泽喷墨打印纸的涂层结构及其性能比较研究

以三种市售喷墨打印纸为研究对象,分别以样品A、样品B、样品C表示,其中样品A和样品C为国内产品阿博特和佳艺,样品B为国外产品古楼.研究确定了三种样品涂层的结构组成,并分析三种样品涂层的表面性能,这有助于了解市场上喷墨打印纸的产品性能现状,对影响喷墨打印纸涂层性能的各因素的研究具有指导意义.采用AFM和SEM观察三种样品涂层表面形貌,发现样品A和样品B的涂层颜料颗粒分散均匀性良好,样品C涂层颜料颗粒聚集,分散均匀性较差;截面SEM和EDS分析结果表明:只有样品B涂层具有双层结构,其中,底层为铝基颜料和硅基颜料,面层只有铝基颜料,样品A和样品C的涂层均为单层铝基材料.对三种样品涂层表面的性能进行分析,结果表明:三种样品的基础性能都符合产品质量标准,其中,样品B的涂层具有最高的光泽度(74.30%),硬度(3H)和耐水性,在吸墨性上样品B涂层的吸墨性(64.7%)高于样品C(57.9%),略低于样品A(69.2%),样品B在三种样品中综合性能最优异.最后,提出一种提高喷墨打印纸性能的双层涂布工艺方案,这为提高喷墨打印纸性能提供了方向,对高级喷墨打印纸的研究具有实际意义.

ANJI MEILUN PAPERMAKING EQUIPMENT CO.,LTD.

Improve Paper Uniformity&Eliminate Fiber Flocculatioin Reduce MD/CD Ratio of Tensile Strength Energy Saving&Consumption Reduction,Reduce Maintenance Anji Meilun Papermaking Equipment Co.,Ltd.is the former Anji Dandy Roll and Watermark Roll Mill.We started to learn from foreign advanced technology of printing roller from1994,and then combined with the needs of domestic customers to provide them with satisfactory services.The company now owns a factory area of 10,000 m^2 and a workshop floor space of 12,000 m^2.

印刷装饰纸透气度对浸渍胶膜纸饰面刨花板表面耐开裂性能的影响

对比研究了不同透气度印刷装饰纸,经相同浸渍、压贴工艺制成饰面刨花板的表面耐龟裂性能和表面耐冷热循环性能。结果表明,印刷装饰纸透气度(单位s/100 mL)数值越低,透气性能越好,相同工艺条件制备浸渍胶膜纸时上胶越容易,透气度为16.37 s/100 mL的样品比透气度为65.02 s/100 mL的浸胶量提高了8.4%。当印刷装饰纸透气度大于35 s/100 mL时,由其浸胶后饰面制得的饰面刨花板表面耐龟裂性能和耐冷热循环性能不合格率分别为87.5%和75.0%。

数字媒体视域下纸质书籍装帧印刷和设计的发展趋势

在数字化媒体高速发展的今天,纸质书籍及其装帧设计正面临前所未有的挑战。如何在这一转型期内,既解决纸质书的诸多问题,又能发挥其固有的优势,成为业界亟需探讨的课题。基于此,立足纸质书装帧设计的演进与现状,深入剖析了数字化时代给其印刷和设计带来的综合影响,并进一步探讨了在数字化视角下,纸质书装帧设计未来的发展方向。目标在于确保纸质书在数字化浪潮中不仅保留独有的魅力和形式,还能通过自身阅读、收藏与欣赏的独特价值,展现出与时俱进的生命力。

室外印刷装饰纸透气度对内层装修材料表面开裂性的影响研究

装修材料在室外环境下容易受到空气、阳光等的多重作用而出现表面开裂。为分析室外印刷装饰纸透气度对内层装修材料表面开裂性的影响,以不同透气度的印刷装饰纸为例,采用相同的工艺条件在装修材料表面进行贴敷,通过对比纸张透气度对浸胶量的影响和装修材料表面的开裂情况,以得到室外环境下印刷装饰纸透气度对内层装修材料表面开裂性的影响。结果表明:装饰纸的透气度越高则浸胶越简单,当透气度超过36.7s/100mL后,装修材料开始出现开裂现象。

基于Kano-FAST的瓦楞纸激光印刷设备设计研究

目的推动印刷行业朝更高效的方向迈进,提高印刷设备的易操作性和视觉识别性。方法将Kano和FAST(Function Analysis System Technique)模型引入瓦楞纸激光打印设备设计的前期应用需求分析中,通过问卷的方法获取用户的基本要求,并划分为几个子类型,进而建立Kano的二维功能属性模型。采用FAST法建立功能树,辅助使用Kano模型,从而更精准地分析用户需求,并更好地根据其需求进行优化设计。结果综合运用设计原理,针对性地挖掘瓦楞纸激光印刷设备在造型识别性、操作易用性、生产安全性上存在的问题,进而输出更优解。结论该设计方法的引入有助于为同类型的印刷设备设计提供参考,并引起更多相关厂家的重视,推动印刷行业向更积极的方向发展。

激光诱导羟基磷灰石夹层纸表面碳化实现无墨打印

传统的油墨打印具有方便快捷的优势,但打印过程中墨水或碳粉的大量使用对人体和环境造成了不可忽视的危害。基于激光的高能粒子特性和光热辐射热效应,利用激光欠焦和聚焦两种工作模式,可实现激光无墨打印和微区加工。本文报道了一种基于羟基磷灰石的“有机-无机-有机”三明治结构多功能纸,并利用激光的光热辐射效应使功能纸表层有机材料——纤维素纤维表面温度升高,实现表层均匀碳化,夹层无机材料——羟基磷灰石阻挡能量继续传导防止纸张烧穿,以此来达到无墨打印的效果。基于激光烧蚀的无墨打印,能够显著降低打印成本,有利于激光烧蚀打印技术的推广。此外,采用激光烧蚀打印技术作用于功能纸上的打印效果具有稳定、绿色环保等特点,在档案存储用纸、食品包装用纸和后天致盲患者阅读等方面具有广泛的应用。

酰胺类化合物改性印刷装饰纸用干酪素水性油墨

【目的】为了解决传统装饰纸水性油墨耐水性差及其印刷装饰纸浸胶量不高的问题,通过化学改性制备出一种酰胺类化合物改性干酪素水性油墨。【方法】采用己内酰胺(CPL)、羟甲基丙烯酰胺(NMA)和双丙酮丙烯酰胺(DAAM)改性干酪素制备出改性干酪素乳液,并制备出相应的水性油墨和印刷装饰纸。通过测试改性干酪素及其相应水性油墨和印刷装饰纸的性能,分析水性油墨的耐水性和印刷装饰纸浸胶量的变化,并探讨CPL、NMA和DAAM联合改性干酪素机制。【结果】加入改性剂后,干酪素体系中引入大量氨基,干燥后可形成致密的膜。改性干酪素乳液的Zeta电位为-45.0 mV,黏度为1482 mPa·s,水接触角为14.2°,浸泡40 min后残留率为80.5%;改性干酪素膜的水蒸气透过率为586.0 g/(m2·24 h),明显低于干酪素膜。改性干酪素水性油墨印刷装饰纸的耐水性明显提升,且浸胶量高于市购干酪素水性油墨印刷装饰纸。在210℃下,该印刷装饰纸的色差ΔE<1,其颜色未发生变化。【结论】较未改性干酪素,CPL、NMA和DAAM联合改性干酪素的耐水性和耐热性都有很大提升,且印刷装饰纸的浸胶量能够满足生产需求。

火焰原子吸收光谱法测定水性食品油墨中铜与铅的溶出量

为探究水性油墨和印刷纸杯中可溶性铅和铜的溶出量,有效控制重金属迁移的安全风险,提出基于火焰原子吸收光谱法测定铜与铅元素的溶出量方法。先配制两种水性食品油墨即深红油墨和深绿油墨,并分析其性能,然后采用火焰原子吸收光谱法测定两种油墨和印刷纸杯中铜和铅的溶出量。实验结果表明:两种油墨的物理状态较为稳定,铜与铅元素在检测中质量浓度与光谱强度线性关系良好,其相对标准偏差分别为1.64%与2.24%,回收率分别在94.0%~101.0%和91.0%~94.8%之间;时间和温度对重金属溶出有较大影响,100℃条件下2 h的铅与铜溶出量分别是25℃条件下24 h铅与铜的8.3与2.36倍;深红墨的安全性高于深绿墨,所配制油墨及纸杯中铅与铜元素的溶出量在高温或长时间使用下存在超标的风险,因而需要严格控制材料制品与食物接触的时间和温度。所建立的方法快速简单、经济环保,可满足企业日常检验的要求。

基于MXene空气电极的印刷柔性锌空电池及其应用研究

目的探究承印材料和添加单层或少层Mxene(SLMxene)对柔性锌空电池性能的影响,以及在不同氧气含量环境下的表现。方法利用丝网印刷在不同承印基材上制备柔性锌空电池,研究承印材料对柔性锌空电池放电性能的影响。结果得到了在PE防水膜上印刷的柔性锌空电池放电性能最佳,初始开路电压最高,达到5.5V。在此基础上,探究SLMXene的质量分数对电池放电性能的影响。利用HCl与HF混合溶液对Ti_(3)AlC_(2)进行刻蚀,并剥离得到SLMXene,将SLMXene加入空气电极油墨中,发现SLMXene添加量超过2%时,柔性锌空电池的放电电压保持平稳,放电电压不再改变,并且在弯折时电池的放电电压保持平稳;弯折200次后,电池的放电电压保持96%以上。结论改变柔性锌空电池所处环境中的氧气含量时,其放电电压表现出与氧气含量呈正相关的特性,表明其在氧气智能包装领域具有应用潜力。

高不透印新闻纸的生产实践

介绍了影响新闻纸印刷不透印性的因素、生产高不透印新闻纸的浆料配比、化学品添加及过程参数控制等生产工艺,并对高不透印新闻纸的产品质量及使用效果进行了介绍。

Solid-state yet flexible supercapacitors made by inkjet-printing hybrid ink of carbon quantum dots/graphene oxide platelets on paper

Paper-based flexible supercapacitors(SCs) show advantages due to the improved adhesion between paper and active materials, the simplified printing process and the lower cost, compared to other substrates such as plastics. Here we report the fabrication of solid-state yet flexible SCs by inkjetprinting a hybrid ink consisting of carbon quantum dots(CQDs) and graphene oxide(GO) platelets, followed by casting of polyvinyl alcohol(PVA)/sulfuric acid(H2SO4) gel electrolyte. The SC obtained from 100-time-printing of the hybrid ink shows a specific capacitance of ~1.0 mF cm-2 at a scan rate of 100 mV s-1, which is enhanced by nearly 150%;the whole device including paper substrate, gel electrolyte and active material demonstrates an energy density of 0.078 mW h cm-3 at a power density of 0.28 mW cm-3. In addition, the excellent mechanical strength of GO platelets ensures the good flexibility and mechanical robustness of the printed SCs, which show a retention of 98% in capacitance after being bended for 1,000 cycles at a bending radius of 7.6 mm. This study demonstrates a promising strategy for the large-scale preparation of low-cost, lightweight, and flexible/wearable energy storage devices based on carbon-based ink and paper substrate.

数字印刷废纸纤维增强聚乳酸复合薄膜的性能研究

以数字印刷废纸、聚乳酸(PLA)为原料,采用熔融混炼、热压成形的工艺制备得到废纸纤维/PLA复合薄膜,探究了不同废纸纤维添加量和不同改性剂对复合薄膜性能的影响。分别加入硅烷偶联剂γ-缩水甘油醚氧丙基三甲氧基硅烷(KH560)、乙烯基三甲氧基硅烷(A171)、异丙基三(二辛基焦磷酸酰氧基)钛酸酯(TMC201)及木聚糖酶,对废纸纤维进行改性处理,研究了改性前后复合薄膜的力学性能、不透明度、化学结构及热稳定性等。结果表明,当废纸纤维质量分数为25%时,复合薄膜抗张强度最佳,达21.6MPa,相较于纯PLA薄膜提高了94.7%;当废纸纤维质量分数为20%时,其不透明度增加至95.5%;废纸纤维经改性处理后,复合薄膜抗张强度均有不同程度的提升,其中KH560的改性效果最佳,复合薄膜(废纸纤维质量分数25%)抗张强度达24.7 MPa,相较于改性前提升了14.4%;改性处理并未对复合薄膜的不透明度和热稳定性产生影响。

基于照相测色的镭射纸印品颜色检测方法研究

目的应用于精美包装的镭射纸表面具有光学微纳周期性结构,会对光产生散射、衍射和干涉等物理作用,难以采用分光光度计等传统颜色测量仪器对其颜色信息进行客观、准确及可重复测量。针对镭射纸印品颜色检测误差大、印品颜色稳定性控制难的问题,提出一种基于照相测量的镭射纸印品颜色稳定性检测方法。方法首先对样本进行视觉标定,选定标准印品的可接受色差宽容度样本集;其次使用均匀漫射照明拍照系统拍摄标准印品及样本集的数字图像,并使用光谱重建方法重建样本的光谱反射率,依据色度学理论计算拍摄样本颜色数据;再使用凸包算法构建合格印品的可接受色差宽容度色域体及对应的椭球和椭圆;最后拍摄任意待测试印品的数字图像,并获取其颜色数据,通过色域体和待测印品的位置关系来判断待测印品的色相是否合格。结果实验结果表明,所提方法能够实现镭射纸印品颜色的准确鉴别,对合格样品的检测精度能够达到100%,对不合格样品的检测精度能够达到90%以上。结论可以实现视觉感知一致的镭射纸颜色稳定性检测,为镭射纸印品颜色的品控提供了解决方案。

基于柔性印刷电路的动态纸媒防伪学习产品探究

为了提高儿童对防伪技术的认知水平,将复杂的防伪技术概念转化为易于理解和吸收的形式,探索并实现一种以纸媒为载体的柔性印刷电路与防伪知识相结合的动态纸媒交互方法。制备了成本低、导电性好、适用于纸基丝网印刷的碳系水性导电油墨,通过学习板、答题纸、知识卡的拼接交互动作,触发柔性印刷电路上的编码点位连通,实现在纸媒实物层面与儿童进行视觉、触觉、听觉的深度交互学习过程。该产品使纸媒与数媒相互融合在一起,共同表达防伪知识的内容并传递给受众,使知识点呈现更加准确、清晰、高效。这种动态纸媒交互方法不仅保留了纸质载体真实自然的教学体验,还通过实体操作充分发挥儿童手、眼、脑的协调作用。同时,以可视化拼接触发编码点位接通的形式让教育大数据有迹可循,进一步推动柔性印刷电路在纸媒创新方面展现出新的活力,更好地传承和发扬中华传统文化的精髓。

Printable,flexible ceramic fiber paper based on electrospinning

Based on the fact that it is challenging for the polymer flexible circuit substrates to meet the requirements of serving in high-temperature environments,this work proposed the idea of using printable ceramic fiber paper as a high-temperature flexible circuit substrate.A ceramic fiber paper with all ceramic components had been developed via electrospinning,solving the problems of low strength and severe strength drop at high temperatures of traditional ceramic fiber paper.The tensile strength of the prepared ceramic fiber paper is 2.63 MPa,and the reliable service temperature is 1200℃.Its bulk density is about 1.5 times that of traditional ceramic fiber paper.It can be printed with patterns by commercial inkjet printers like ordinary printing paper and has excellent printability.The feasibility of ceramic fiber paper as a flexible circuit substrate was verified by constructing a simple circuit.When the fiber paper is significantly bent,the circuit still forms a complete path,which proves that it has a strong application potential for high-temperature flexible circuit substrate and is expected to promote the development of flexible electronic devices serving at extreme high-temperature environments.