纸浆模塑托盘对角刚度的跌落试验测试

通过跌落试验机对纸浆模塑平托盘进行对角线刚度试验,分析了其从不同高度跌落后的变形,校核了托盘的对角刚度,并利用数字图像相关方法对高速摄像机采集的图像进行了定量分析,得到了纸浆模塑材料的弹塑性力学特性,从而可以定量评定托盘抗冲击变形能力及对货物的承载能力。为纸浆模塑托盘的设计提供了重要指导。     

纸浆模塑平托盘的发展与未来

作为一种新型绿色环保包装材料,纸浆模塑因为具有无污染、成型工艺简单、可反复回收再利用等突出优点备受关注。利用其设计制作平托盘可代替部分木质平托盘以及塑料平托盘。本文介绍了纸浆模塑平托盘的新结构设计变化与发展,如层叠式结构、嵌合结构、拼装结构等。同时指出纸浆模塑平托盘今后将朝着标准化、智能化、循环化以及功能化等方向进一步发展。     

纸浆模塑托盘结构强度的实验测试分析

实验研究了纸浆模塑托盘结构的力学性能,测试分析了纸浆模塑托盘的承载能力,包括纸浆模塑托盘支腿单元结构的抗压能力,纸浆模塑托盘整体结构的抗压能力、抗弯性能。结果表明:纸浆模塑托盘的抗弯能力相对较弱,实验样品的平均抗弯载荷为1.32 kN;从抗压能力来看,纸浆模塑托盘整体承载能力与各个支腿承载能力的总和相接近;纸浆模塑托盘整体结构的抗压承载能力可达47.80 kN。     

纸浆模塑托盘构型三维设计及支腿结构 CAE 分析

运用 Pro/ E 软件对纸浆模塑托盘构型进行了三维设计,完成了托盘支腿和面板的零部件建模及相应的装配。 运用 ABAQUS 有限元分析软件对托盘支腿结构进行了强度计算,模拟分析了纸浆模塑托盘支腿在压缩载荷作用下的弹塑性变形,得到了模型受载变形全过程的载荷-位移曲线,从而确定了支腿的承载能力。     

层叠式纸浆模塑平托盘结构设计与性能分析

在分析原有纸浆模塑托盘结构的不足的基础上,设计出层叠式纸浆模塑托盘。利用有限元法对静载和叉车作业进行了仿真,得到了托盘的变形和应力分布云图。仿真结果表明:与单层式托盘相比,新型托盘较好地解决了应力集中的问题,使载荷分布更加均匀,提高了承载能力,减小了变形量,降低了各向力学性能的差异。另外,层叠式托盘降低了单层厚度,易于干燥。     

新型纸浆模塑通用平托盘的结构与性能研究

研究了一种新型纸浆模塑通用平托盘的结构及其性能,这种新型托盘采用双面吸附成型工艺,结构合理、壁厚大、强度高.基于ANSYS有限元分析软件分析并确定了该托盘的结构要素;利用正交试验方法,设计并优化了托盘的结构.     

重载纸浆模塑托盘研究现状及存在的问题

重载纸浆模塑托盘是一种典型的绿色包装制品,它采用木质剩余物、农作物秸秆、废纸等为原料,不仅可以节省资源,保护生态环境,还有效降低废弃物回收再生费用,符合国际包装的发展趋势。从原料制浆、浆料处理、成型工艺、结构与性能等方面,对国内外重载纸浆模塑托盘的研究现状进行分析,指出重载纸浆模塑托盘存在的问题,并对重载纸浆模塑托盘的发展趋势作出展望。     

纸浆模塑开口薄壁圆锥筒压缩力学性能研究

利用MSC.Marc有限元仿真软件对纸浆模塑开口薄壁圆锥筒的压缩力学行为进行了仿真分析,并将仿真分析的结果与实验结果进行了比较。结果表明,仿真结果与实验结果基本吻合,利用MSC.Marc软件可以对纸浆模塑材料的力学行为进行有效的仿真分析。     

十几个省市和有关公司开会推广鲜蛋包装技术

全国包装大检查办公室在湘潭召开了改进鲜蛋包装技术交流推广应用会。会上有十几位代表介绍交流了国内外纸浆模塑托盘用于包装鲜蛋的情况,使用该材料做内衬垫物与其他内垫材料用于鲜蛋包装破损率的对比:内衬纸浆托盘包装的平均破损率为1.25％;黄板纸井字架蛋格包装的平均破损率为10.89％,鲜蛋内衬纸浆托盘对鲜蛋的储存、运     

纸模总厂迈出新的步伐──苹果纸浆托盘

纸模总厂迈出新的步伐──苹果纸浆托盘湖南省纸浆模塑总厂在发展“源于自然，回归自然”的“绿色包装”产品又一次取得突破。由中国包装总公司湖南分公司主持的对该厂最新研制的ＺＧＴＰ纸浆模塑系列苹果托盘产品进行了技术鉴定。参加组织鉴定的有湖南省经委、湖南省新技...     

Cushioning properties of moulded pulp

Cushion curves for a moulded pulp material were constructed and compared with cushion curves for an expanded polystyrene (EPS) foam. The ability of the moulded pulp material to provide some shock absorption resulted from a number of ‘dimples’ moulded into the pulp sheet. As an impact was applied to the moulded pulp, these dimples crushed and thereby mitigated the shock. Results showed that the moulded-pulp test samples had good cushioning characteristics for low static loadings, low drop heights, and single impacts. However, the cushioning characteristics of the material were inferior to those of EPS foam at static loadings above about 5kPa, and where higher drop heights or multiple impacts occurred. These properties were improved by using two samples with interlocking dimples. It was concluded that the material had the potential to replace EPS foam in a limited number of situations, and several recommendations for future research were given.     

纸浆模制品的模体结构特征分类

根据纸浆模制品在应用过程中的受力方式,将纸浆模制品的结构分为:承受不同方向外力作用下的侧棱模体结构,承载顶向压力的结构,局部凹槽结构和棱、角处的结构等类别,为实际生产中各类模体性能的测试分析提供依据;并对各类别结构进行受力分析,得到了各类别结构的受力及变形特点。     

纸浆模塑材料本构方程拟合的改进

对描述纸浆模塑材料经验型本构关系的拟合方程进行了改进,给出一种新的本构关系拟合方程,根据不同密度的材料在不同加载速率下的压缩实验数据,对该模型中的相关待定系数进行了拟合。验证结果表明,提出的本构方程能较好地反映材料的应力-应变关系。     

Moulded Pulp Manufacturing: Overview and Prospects for the Process Technology

Eco‐friendly packaging such as moulded pulp products have gained commercial importance in the recent years. However, it remains a greatly under‐researched area, and there is an arising need to consolidate the best practices from research and industry in order to increase its implementation. The goal of this paper is to give an overview of the main aspects involved in the manufacture of moulded pulp products. This includes a classification of moulded pulp products, historical and current applications, production processes, materials, mechanical properties and environmental sustainability. Moreover, based on the latest research in the field, an innovative drying technique that utilizes concepts derived from impulse drying is presented, and the implementation of this process technology is discussed. Copyright © 2017 John Wiley & Sons, Ltd.     

秸秆纤维栈板的设计与研究

目的研究可用于工业包装的秸秆纤维栈板。方法通过对1/4栈板进行建模和有限元分析,而后用一定配比的秸秆纤维浆通过半湿压工艺对其进行试制,并对其进行最大压力和耐破强度试验。结果该方案测试结果与软件分析的结果比较接近,栈板的最大压力可达7424 N,材料的耐破极限达到2.833 MPa。结论通过有限元分析与试验验证,文中设计的栈板能够满足使用要求,且承重为750kg,该设计方案可行。     

Multidimensional life cycle assessment on various moulded pulp production systems

Moulded pulp has been used as an alternative to plastic in certain packaging applications, but some problems in the production system lead to higher costs including energy consumption. Industry tends to operate on the basis of experience rather than through scientific evaluation and systematic design methods. The research aims at detecting the problems in the production system by a multidimensional life cycle assessment (MLCA) with transparent analysis. The MLCA measures the performance of the moulded pulp production system with regard to technical, economic and environmental aspects and produces quantitative results (in monetary units), and finally indicates the overall efficiency of the production system using a sustainability index (SI). A life cycle impact assessment method based on endpoint modelling (LIME) is mainly adopted in the MLCA. Three existing moulded pulp production systems for industrial packaging in China were assessed in this study. The results show that the main environmental impacts of the three production systems are the atmospheric emissions and landfill waste; the drying stage in the production systems, which is dominated by consumption of resources and environmental impacts, is the key to controlling costs; steam should be the first preferred heat source in the drying process for achieving sustainability in the moulded pulp production system. The optimum for the three cases is identified by calculating the newly developed SI. The MLCA approach can be used to assist in identifying potential improvements and practical new packaging designs. Copyright © 2009 John Wiley & Sons, Ltd.     

Compression and cushioning characteristics of moulded pulp packaging

Experiments have been carried out to determine the relationship between the geometry of a moulded pulp packaging and the resulting static and dynamic strength. The influence of the shape of the moulded pulp sample has been examined. The shapes were of rounded and squared geometry, with different draft angles, sample heights, volumetric density in order of the level of hotpressing and surface densities. Static strength was examined by compression test. The experimental results show that cylinders, cones and shapes with large roundings produce better compression strength than squared or rectangular products with small roundings. Dynamic strength was found using drop tests to obtain G curves for first impact of the test samples at different conditions. An equation to determine the maximum G value during the drop was found. The equation shows good correlation to the results achieved for small static loads (the left side of the G curves). C/e curves for the different geometries show that the minimum cushion factor attainable for the tested moulded pulp products is approximately 2.0. Copyright © 2000 John Wiley & Sons, Ltd.