The paper cup machine paper cup what is the difference between single and double face?

Paper is divided into single PE film paper cups and double PE paper cup single PE film laminating paper cups: use single PE film paper production of paper cups called single PE paper cup ( Most domestic common market dao paper cup, advertising paper cups are single PE film paper cups) , the form is: paper cups of water side has a smooth PE film; Double PE film paper cups: with double PE film paper cups is called double PE paper cup, paper production form of: paper cups inside and outside have PE film paper cup size: we use an ounce For the unit to measure the size of paper cups. Common on the market, for example, 9 ounces, 6. 5 ounces, 7 ounces cups, etc. An ounce : ounce is a unit of weight, here represent: an ounce of weight is equivalent to 28. The weight of the 34 ml water, can express like this: 1 oz = 28. Ml (34 ml) = 28. 34 grams ( g) Paper cups: at home, we put 3 - - 18 ounces The size of the cup is called a paper cup.