- 上一篇：高速切削加工在模具制造英文文献和中文翻译
- 下一篇：施涂机英文文献和中文翻译
根据胶合板表面的形状，模切机可分为两种类型：平板模切机和旋转模切机
2.6.1平板模切机
顾名思义，它是在一个平面夹板模制成。框的形状在胶合板通过使用激光或锯切割。然后压痕和切割规则被切割成所需
长度并固定到所述夹板表面。模切被压在坯料模进行。从机械辅助模过程中的坯料和一个冲切成品件压力在输出侧被接收。
平板模切是用于处理复杂的形状在需要非常详细和精确度，如购买的显示器点一个简单的过程源Z自+751+文/论^文]网[www.751com.cn。然而速度比在旋转模切机慢。
2.6.2旋转模切机
旋转模切机是高速模切机，通常用于大批量的工作。模具是由与模安装筒的弯曲胶合板表面同心的。压痕和切削钢规则也弯曲的形状，以便它可以被适当地埋设在胶合板表面。辊隙压力是通过与模具安装筒沿运行的支撑气缸提供。
旋转模切机一般都安装在行以柔印，糊盒机机然而平板模切机通常是一个单独的机器和处理光刻标签和岩性复合盒空白。
在模切部，模具成本的前期成本给客户。就像印刷板，客户必须支付金属模具的成本。
：外文原文
THE COST OF PRINTING A CORRUGATED BOX
Introduction
The purpose of this research is to identify the primary drivers of selection of a particular process to manufacture and print corrugated boxes. This research also explores the estimated cost of producing a printed corrugated box using the traditional processes, with special emphasis on the relative cost of low volume printing.
Conventional “brown box” shipping containers comprise a majority of the corrugated board production. A significant proportion of these are printed with simple 1-2 colors (up to 4) using flexography. The printing occurs concurrently with cutting, scoring, and gluing along the manufacturer’s joint, in a specialized piece of equipment called a“Flexo-Folder-Gluer”(Shulman 1986). The flexo-folder-gluer is a high speed machine and produces high volume with limited color reproduction compared to litho and digital printing processes in a cost effective
way. The printing methodology using this machine is called flexo post-sheet printing.
Two factors have contributed to a shift in the cost of printed corrugated board. There is an increase in the number of colorful displays, and have a much smaller run size. About 6% of corrugated fiberboard is used in colorful point-of-purchase (POP) displays. This is a segment of
the market that is growing, and represents the highest value (per square foot) of corrugated packaging produced (Slembrouk 2007).
A number of factors influence the cost of color printing methods including prepress time,set-up/changeover costs, press production, and post-press operations (Ruggles 1996). Customers are moving to just-in-time and zero inventory and as a result the industry is moving away from traditional long runs to shorter runs. Shorter product life cycles and fragmentation of product markets have reduced the average print run to below 5,000 sheets with few repeat orders. In some cases, the total annual set up time is longer than the annual net production time (Slembrouk
2007).
The quality of color print on corrugated board is sensitive to the texture of kraft paper,the “washboard” effect from the corrugation, and the uneven absorptive capacity of the substrate.As a result, printing methods have grown increasingly sophisticated. The highest quality colorful printing requires a “white top” bleached or clay-coated substrate to better reflect the colors and provide contrast.
In contrast to post-sheet printing (using flexo post-sheet), the paper can be pre-printed (using flexo pre-print, lithography or gravure) before the board is combined or a pre-printed label can be applied after the board is combined. Pre-printing is an expensive option because of the