瓶级聚酯切片中乙醛含量的控制

对瓶级聚对苯二甲酸乙二酯(PET)原料中的乙醛含量、第三组份(间苯二甲酸)含量、原料比表面积以及工艺参数控制等对产品中乙醛含量的影响进行了讨论，得出了合适的工艺操作条件，并注意到预结晶单元和冷却单元的工艺参数控制对产品乙醛含量的影响最显著，从而为生产乙醛含量小于1．0μg/g的瓶级高粘度PET切片提供了参考。     

聚酯瓶的生态性能分析及设计

利用材料的生命周期评估法对聚酯瓶的生态性能和设计要点进行分析。瓶级聚酯的巨大市场 ,优良的物理化学性能 ,简便安全的加工使用特点 ,使聚酯瓶成为一次包装革命。其可持续发展的关键是回收利用。目前回收最多的国家为 3 4% ,60 %以上回收物用于生产纤维。应针对各种回收方法 ,建立稳定的消费 回收 再循环加工的网络。     

基于图像的静脉输液无液检测的新方法

针对国内外为实现静脉输液无液自动检测而采用的各种传感器技术存在的各种问题,提出基于图像的静脉输液无液检测的新方法.通过CCD摄像机采集输液器液位图像,数字化后输入计算机,由计算机软件进行图像处理和分析,得到输液器是否无液的信息.该方法的研究,实现了将数字图像处理技术融合到静脉输液无液检测应用中,丰富了图像处理内容的同时为静脉输液无液检测提供了新思路.     

封头盘管槽的制造

我司为台资厂制造EPS槽为例。对封头盘管式罐的生产工艺论述。说明了筒体盘管和封头盘管的制造和安装工艺。     

Numerical solution of nonlinear system of Klein–Gordon equations by cubic B-spline collocation method

A technique to approximate the solutions of nonlinear Klein–Gordon equation and Klein–Gordon-Schrödinger equations is presented separately. The approach is based on collocation of cubic B-spline functions. The above-mentioned equations are decomposed into a system of partial differential equations, which are further converted to an amenable system of ODEs. The obtained system has been solved by SSP-RK54 scheme. Numerical solutions are presented for five examples, to show the accuracy and usefulness of proposed approach. The approximate solutions of both the equations are computed without using any transformation and linearization. The technique can be applied with ease to solve linear and nonlinear PDEs and also reduces the computational work.     

Cost benefits from standardization of the packaging glass bottles

This study deals with a recycling system with two competing brewers. It is assumed that they coordinate their manufacturing operations through standardization of their glass bottles for easy implementation of extended producer responsibility (EPR). Immediate benefits from the standardization are three folds. Firstly, the sorting and exchange processes of the bottles collected for reuse by each brewer become no longer necessary. Secondly, cost reduction is achieved through streamlining of collection and reuse processes. Finally, under the stochastic demand of glass bottles their inventory holding costs and lost sales cost are reduced via inventory pooling. Through the development of the mathematical models we determine an optimal operation policy of the two brewers that maximizes the sum of benefits obtained from standardization. Numerical examples are solved to show the validity of the model. Sensitivity tests are also performed to examine the effects of system parameters on the objective function value and decision variables.     

注吹一次成型全自动吹瓶机的研制

介绍注吹一次成形全自动吹瓶机的工作原理和各主要部件的结构设计特点。该吹瓶机是在普通注塑机的动、定板间加装一个回转模部件，将定板做成凹模部件，将开边模部件安装在动板上并改装液压和控制系统制成。样机试制结果表明，设计方案基本合理。     

我国瓶级聚酯发展现状与展望

回顾我国瓶级聚酯产业的发展历程，通过分析我国瓶级聚酯产业的现状和存在的问题。对我国瓶级聚酯产业今后的发展提出了建议。     

奶瓶中双酚A、烷基酚及烷基酚聚氧乙烯醚残留量的高效液相色谱-荧光测定法

建立了奶瓶中双酚A、烷基酚及烷基酚聚氧乙烯醚残留量的高效液相色谱-荧光测定方法.样品用二氯甲烷-甲醇提取后,采用高效液相色谱分离,荧光检测器检测.BPA、OP、NP、OPEO在0.05～1.0 μg/mL,NPEO在0.2～1.0 μg/mL范围呈线性.对奶瓶样品作添加回收试验,各种成分的平均回收率在81.1%～100.3%之间,相对标准偏差在2.7%～5.5%之间.方法检出限:BPA为1 mg/kg;OP、NP、OPEO为2 mg/kg ;NPEO为5 mg/kg.结果表明,该法简便、灵敏、精确度高,适用于奶瓶中双酚A、烷基酚及烷基酚聚氧乙烯醚的残留分析.