How to do moistureproof shenzhen carton
shenzhen cardboard-box factory products can be used in many industries, but in the process of using the product is relatively easy to damp, now it's time to carefully to understand this knowledge introduction?
suggest to switch to better waterproof effect of base paper, especially the pit in shenzhen, the cartons. To examine how base paper waterproof effect, can be through the instrument testing of base paper surface water imbibition, general degree of surface water in the 50 g/m2 ( 60S) The following, the waterproof effect is good. If failed to test instrument, directly on the corrugated board paper or corrugated paper sprinkled a few drops of water, wait for 60 seconds after the paper blot, observe whether there is a paper surface discoloration after penetration, if not, the waterproof effect is good.
usually, in order to improve the surface of the base paper waterproof, shenzhen a cardboard-box factory and was in the papermaking process need to improve the waterproof agent in surface sizing starch paste liquid ratio, due to the fertilizer price expensive, waterproof good paper than poor waterproof paper costs more than 50 - per ton 100 yuan