在包装设计中使用EPE或EPS各应注意些什么？

有一标准19英寸插箱，材料为1。2毫米的冷轧钢板，设备重量约18千克。现我使用EPS作为包装材料，但在高度为800毫米的跌落试验中未能通过。由于设备结构和包装纸箱已定，不知有无哪位高手能指点一二，从改变现有的结构入手，使其结构改进完善一下。

    EPS俗称保丽珑，用模具“煮”出来的，太硬，韧性不够,实验中，外界应力容易传到产品本身
    EPE，目前厂家将一块块片材粘在一起，贵，韧性非常好，材料本身具有极强的吸水性，所以保存材料要求极高，和EPU一样，目前很少厂家用模具来打

My Experience :  
  
***1) PS Form touching area with product . Must touch strong place for   exp the ribs, so that the force can be absorb.
Try to modify the foam by cut and add material .  
  
2) Too much touching area means more force, try to reduce .  
  
3) PS foam density . Higher density can absorb more force.
  
4) PS foam condition. Not enough process will be too hard .

三年松下电视落下试验实战。 以上为主要原因， 当你产品不能改为有如上。 华语速度太慢， 不好意思。

hi.ccf.thanks for your advice.it's very helpful to solve th pb..but pls.give me more information about the 3rd,how can i limite the density.very greatful if you can recommend some reference to me.

   Well,buddys,basically, you just need to tell your supplier how big is the density of the material (EPS), I can hardly remember the exact number, but I know we have two options, consult your suppliers.
   As to EPS, it's no good for big machine, for instance, PDP, 40-inch LCD,
we opt for EPE, even the package of DELL computer, they use EPE to pack machines sold in U.S. because long trip from Amoy to overseas

wangtaosunwave wrote:
hi.ccf.thanks for your advice.it's very helpful to solve th pb..but pls.give me more information about the 3rd,how can i limite the density.very greatful if you can recommend some reference to me.

  
For example my product . We normally use PS foam with Density (Specific gravity) 2.0kg/m3 - 2.2Kg/m3. Since your product is smaller or not so emphasized on quality . It might be lower .
  
1) Many case when problem happen. We check the density . Supplier tend to cheat us using lower grade material.
Also the PS foam can absorb moisture easily , if drying time in oven is not enough. The weight also appear higher then it suppose to be.
  
2) But to increase the density so much just to countermeasure a drop test might not good as cost increase. I also not sure how much you should increase. It is simply base on experience.  
  
3) If lets say your previous model is OK using same density , I think you better concentrate on 1 & 2 .
  
4) I cant comment much unless I see you product and testing standard. I normally deal with MIS ( Matsu *** a Industrial Standard) . Drop for 1 corner, 3 edges , and all 5 Surfaces.
  
Good Luck