How to caculate the cost of straws

How to estimate the cost of paper straw

Let’s do 6*197mm paper straws as an example:

1 ton 6*197mm paper straw.

How many paper straws: 1ton*1000kg/ton*1000g/kg/1.2g/pcs=833thousand pcs.

Since there are some waste during the production, about 5%. So, 833/1.05=793333 pcs.

(5% is higher compare with stable working if has more experience)

So one ton 6*197mm paper straw has 790000 pcs.

So total paper weight is 0.87ton, glue is 0.13ton. (rate=100:13)

The usage rate of 60gsm paper with 120gsm paper is 1:4 (0.2:0.8)

Son total 60gsm paper weight=0.87*0.2=0.174ton

120gsm paper=0.87-0.174=0.696ton

So total raw material cost=2000*0.174+1800*0.696+2000*0.13=1860 USD

So unit 6*197mm paper straw, 3 layers, raw material cost=1860/790000=0.00235 USD

 ( After you get less waste, the cost will come down)  4 layers, the cost increase about 33%.