瓦楞纸板托盘的压力性能

通过大量实验对不同结构的瓦楞纸板托盘进行测试，得出了其相应的压力试验参数，为瓦楞纸板托盘设计的应用选择提供了依据。     

瓦楞纸板衬垫缓冲性能的研究

介绍了楞纸板衬垫垂直方向和平面方向的动态压缩特性。     

瓦楞纸板缓冲垫的动态性能

通过大量实验对瓦楞纸板缓冲垫进行了动态性能测试，得出了其相应的最大加速度－－静应力曲线，作为用这种材料进行缓冲包装设计的理论论据。     

瓦楞纸板缓冲包装结构的缓冲性能研究

在分析瓦楞纸板特点的基础上，设计了四种瓦楞纸板缓冲结构，并对其进行测试，总结其缓冲性能，以探索代替泡沫塑料的可能性。     

瓦楞纸板工艺探讨

介绍了瓦楞纸板基本结构、楞形和形状,阐述了瓦楞纸板的生产过程及相关设备,分析了瓦楞纸板的粘合原理,在生产上具有一定的指导意义.瓦楞纸板在包装印刷行业将扮演越来越重要的角色.     

新型瓦楞纸板(双拱)组合结构性能的研究

研究了一种新型组合结构的4层双拱瓦楞纸板,通过大量的分析及对该新型纸板的各项性能测试,得出了较理想的结果:4层双拱瓦楞纸板的平压强度超过了5层瓦楞纸板,边压强度仅次于5层瓦楞纸板;在频率加速度振动曲线中得出双拱瓦楞纸板的初始抗压性远远超过了5层瓦楞纸板,这使4层双拱瓦楞纸板在运输包装中很有利用价值.     

4层瓦楞纸板复合瓦楞纸弹性模量的计算

应用复合材料细观力学分析方法,推导了4层瓦楞纸板的复合瓦楞纸的弹性模量。考虑2层瓦楞原纸间粘合剂的影响,分析了复合瓦楞纸纵向弹性模量与粘合剂体积分数及其纵向弹性模量的关系,并用实验进行了验证。为4层瓦楞纸板进一步的相关理论分析奠定基础。     

瓦楞纸板性能介绍

多功能性瓦楞纸板的研究开发,给纸箱行业提供了更新的市场。随着全球环保和可持续发展理念的渗入,以及包装领域的不断拓宽,对设计方式灵活,功能独特,成本低廉,可用于多种行业的瓦楞纸板的需求会更大。加之造纸行业对特种纸和加工纸技术的不断创新,未来的瓦楞纸板将从原来的单一包装保护功能逐步向商品保护与环境保护、     

蜂窝状瓦楞纸板的研究

将多层瓦楞纸板粘合制成蜂窝状瓦楞纸板衬垫，替代泡沫塑料缓冲衬垫材料，经研究结果表明：蜂窝状瓦楞纸板具有较高的垂直抗压强度，且抗夺强度随纸板百和宽度的增加而呈近似线性增加；随纸板高度的增加而降低，但降低幅度不大。蜂窝状瓦楞纸板具有一定的缓冲性能，尤其适用于家电产品、小型机电产品、陶瓷制品等较重产品的缓冲包装，可以根据不同产品的外形特征设计缓冲衬势，以替代泡沫塑料衬垫。从有利于环境保护，适应全球性的绿     

加筋瓦楞纸板的承压能力分析

首先对加筋瓦楞纸板的受压稳定性问题作出分析，从而说明合理地加筋处理能有效地提高其承压能力。     

瓦楞纸板在线增强技术

为了解决国产普通瓦楞原纸存在的质量问题,东经控股集团公司通过使用自行研制的水性增强剂,在瓦楞纸板生产线生产过程中,对国产普通瓦楞原纸进行喷涂处理,在线增强来提高国产低克重,低质量瓦楞纸的韧度和强度.经实际使用,具有明显的效果.阐述了该技术的研制过程.     

Print uniformity of corrugated board in flexo printing: effects of corrugated board and halftone dot deformations

Print non‐uniformity is a major concern for flexo post‐printers. Many of these non‐uniformities are suspected to be caused by the corrugated board structure itself. Striping is the most obvious one, but also other print quality problems might be structure‐related. This work focuses on how deformations of the board might lead to print non‐uniformities, and if the deformation of halftone dots is the mechanism behind striping in halftone flexo post‐printing. Finite element models were used to analyse the effects of deformations of corrugated boards and compressed halftone dots in the printing nip. Distortions of the board due to non‐uniform hygro‐thermal strains were shown to be a potential cause of print non‐uniformities. Striping in halftone prints was found to be caused by differences in dot gain between areas above ridges and valleys of the flute structure. Copyright © 2008 John Wiley & Sons, Ltd.     

Quantification of banding on printed corrugated board using spatial frequency analysis

The human visual system has an exceptional ability to detect systematic print mottle. One type of systematic print mottle is banding on printed corrugated board, resulting in a disturbing print defect. A new method that quantifies banding on printed corrugated board is proposed. The method is based on spatial frequency analysis, and the degree of banding is determined using a band‐pass filter range adapted to fit the flute wavelength and orientation of the acquired image of the printed board. The results for B‐flute corrugated board gave a correlation coefficient of 0.98 between the technical measurements and the subjective ratings. Methods of quantifying the banding on the different types of corrugated board available on the market are discussed. Copyright © 2005 John Wiley & Sons, Ltd.     

瓷质餐具全纸包装生命周期评价案例研究

以瓷质餐具全纸包装为研究对象,采用生命周期评价中分类、特征化和量化“三步走冶方法对全瓦楞纸包装进行了从原纸的供给到产品销售等各过程的环境影响评价,总环境影响潜力为1. 83×10-2 。结果表明,瓷质餐具全纸包装对环境的影响主要来源于包装产品的运输过程,消耗了资源并使全球变暖,并提出了产品的生产厂商应就近寻找包装产品的生产商,以减小其产生的环境影响。     

Numerical and experimental investigation of the strength of corrugated board packages

The buckling behaviour of corrugated paper packages was studied by means of an experimental and theoretical analysis. Mechanical behaviour of paperboard was first evaluated experimentally, then a local geometry FEM model, able to reproduce with a very good accuracy buckling loads obtained experimentally in the standard edge compression test, was developed. In order to investigate the buckling of a complete package, a finite element ‘corrugated board’ was introduced by means of a dedicated homogenization procedure. The FEM model of the package, assembled with this new element, can accurately predict the experimental data of incipient buckling observed during the standard box compression test, despite the few degrees of freedom and the minimal computational effort. Copyright © 2003 John Wiley & Sons, Ltd.     

预压缩多层钙塑瓦楞纸板准静态压缩与动态缓冲性能研究

对不同预压程度下多层钙塑瓦楞纸板缓冲衬垫的力学性能以及缓冲特性进行了研究。通过静态压缩试验对比了缓冲衬垫在不同预压缩程度下的力学性能以及缓冲特性。将材料的应力-应变曲线转化为缓冲系数-最大应力曲线,从而获得最小缓冲系数,研究发现压缩率为5%到25%的缓冲材料可以有效地扩大缓冲保护范围。通过连续冲击试验得到了多层钙塑瓦楞纸板缓冲衬垫在连续冲击载荷条件下的冲击响应,利用加速度-时间曲线和冲击放大系数曲线分析了缓冲衬垫的缓冲特性。研究结果将对多层钙塑瓦楞纸板在缓冲包装设计中的应用起到一定的参考价值。     

Predicting creep lifetime performance in edgewise compression of containerboards and for stacked corrugated board boxes

Predicting how long time a corrugated board box can be stored with a constant load stacked on top of it without failing is an everyday challenge for a box designer. This is a basic step in corrugated board box material design which is usually resolved by utilizing so-called stacking factors. A stacking factor is the ratio between the compression strength of the box and the stacking load. Higher stacking factors are used to accommodate for longer storing times or high relative humidity conditions. Utilizing stacking factors in the way commonly done today can be a good first approximation. However, this method often neglects or overcompensates for the inherent non-normal distribution statistical behaviour associated with corrugated board box lifetimes. A higher precision in predicting box lifetimes enables material optimization and, thus, a more efficient use of resources. This work presents a convenient way of predicting lifetimes of both containerboards and corrugated board boxes. The approach additionally introduces the concept of reliability into lifetime prediction. The prediction is made directly from material or structural parameters and the applied load. This is accomplished by relating two different parameter sets for the Weibull distribution. It is shown that lifetime is indeed dependent not only on a stacking factor but also on durability and the variations associated with the material or box.     

Washboarding and print quality of corrugated board

This paper is a concluding survey of the research presented in three previous reports by the author. It deals with the problem of washboarding, which is the wavy pattern coinciding with the flute tips on the surface of corrugated board. The causes of washboarding on the surface of corrugated board have been determined and the effect of washboarding on the print quality of corrugated board has been studied and discussed. Measuring equipment for quantifying washboarding has been developed. Which has a non-contact, optical measuring device which measures the distance to a corrugated board sheet with an accuracy of 1 μm. The effects of paper properties and process and converting conditions on the degree of washboarding were studied and the effects of the degree of washboarding on the appearance of the unwanted stripes in flexo print (so called printed stripes) has been analysed. The main influencing factor for washboarding to occur on corrugated board surfaces is the amount of glue between the liner and the fluting. The more glue, the more washboarding. The liner grammage is also important; a high liner grammage decreases the degree of washboarding and a low fluting grammage decreases the washboarding. The degree of washboarding influences print quality to a surprisingly low extent, contrary to what has been claimed before, with other parameters influencing the printed result much more. The distance between the plate and the pressure roll (the print nip) and the ratio between the stiffness in the thickness direction of the board and the printing plate, influence quality print dominantly. The type of print, i.e. half-tone or full-tone, also influences print quality. It is not possible to get perfect printing results in both half-tone and full-tone prints when using the same inking station. To avoid printed stripes on half-tone areas one should increase the print nip, decrease the fluting stiffness and/or increase the plate hardness. To avoid printed stripes on full-tone areas one should do the opposite: decrease the print nip, increase fluting stiffness and/or decrease plate hardness. © 1998 John Wiley & Sons, Ltd.     

微细瓦楞纸板及其在包装领域的应用

随着环保型包装材料的广泛应用,微细瓦楞纸板以其优势逐渐引起同行关注.文章首先对微细瓦楞纸板的特性进行分析,并简要介绍了其在国内外的现状.然后叙述了微细瓦楞纸板在包装领域的应用及其印刷方式的选择,最后对微细瓦楞纸包装进行了展望.     

Some experimental aspects of the compression behaviour of boxes made up of G‐flute corrugated boards

The load‐bearing capacity of boxes made up of thin‐walled G‐flute corrugated boards was investigated by performing monotonic and cyclic compression tests on boxes of various geometries. Results provided a large experimental database on the influence of the box dimensions and compression velocities on buckling parameters such as critical load and the corresponding critical axial deformation. Cyclic loading tests permitted the detection of the onset of an irreversible strain state, which could be related to damage initiation and propagation in the microstructure of the panels of boxes. Moreover, main differences, which could be observed between G‐flute corrugated boards and folding boards, were emphasized. Finally, the ability of some usual modelling approaches to predict the critical load of boxes was discussed. Copyright © 2009 John Wiley & Sons, Ltd.