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　　一般來講，紙箱長寬比在1~1.8的范圍內，長寬比對抗壓強度的影響僅為±5%。其中長寬比RL=1.2~1.5時，紙箱的抗壓值最高。紙箱長寬比為2：1時，抗壓強度下降約20%，因此設計紙箱時長寬比不宜超過2，否則會造成成本浪費。<br /> 　　二、合理制定堆碼時間及堆碼方式<br /> 　?、偌埾涞目箟簭姸入S堆碼時間的延長而降低，這種現象稱為疲勞現象。試驗表明，在長期載荷的作用下，只要經歷一個月的時間，紙箱的抗壓強度就會下降30%，在經歷一年后，其抗壓強度就只有初始值的50%。在設計紙箱材質時，對流通時間較長的紙箱應提高其安全系數。<br /> 　?、诩埾涠汛a方式也對紙箱的抗壓強度產生一定影響。紙箱豎坑方向承受的壓力大大超過橫坑方向，紙箱堆碼時應保持豎坑方向受壓。從試驗結果來看，紙箱的箱角部位承受的壓力最高，離箱角越遠,承壓力越低。因此紙箱在堆碼時應盡量保持箱角與箱角對齊疊放。<br /> 　　常見的紙箱堆碼方式有三種：磚砌式、上下平行式及風車式.此三種方式中，上下平行式堆碼有利于保持箱角充分受壓,因而最為合理。而磚砌式及風車式則應盡量避免。<br /> </div> </div> <div style="width:702px; text-align:right; line-height:180%;" class="news_content_back"> <a href="javascript:history.go(-1)">[返回]</a> </div> </div> <div id="bodycontent" style="text-align:left;" class="news_prev"> 上一篇:<a href=news_content-730744.html>關于紙箱的基本知識</a> </div> <div id="bodycontent" style="text-align:left;" class="news_next"> 下一篇:<a href=news_content-730746.html>展示盒的基本介紹</a> </div> </div> <div id="right">  </div> <div class="clear"></div> </div>  <div id="copy"></div> <div 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