How to identify the quality of a packaging belt?
The above can not be confirmed, please again by fire, in the burning process of black smoke or quickly melt rapidly dropping, not good.6. use teeth bite: first to experience the new material PP (PP regeneration material) strength, and then contrast, if relatively soft, absolutely inside add PE.7., look at the incision section: rough and dry surface, no luster, poor quality.8.: as long as the submerged floating difference, if the above is not sure, or undecided, then only the test machine. Experience, whether good or bad, must be identified by machines, because it is the safest. Other materials can also be applied to the above, of course, they have to understand the nature of the new material first.
Method: blow after the fire, iron objects quickly contact the melt, and then quickly opened, look at the wire forming is not uniform, uniform is good, Dora several times after the wire will overlap, opened again, to see if it has no elasticity, can not be opened again without fault, no fault the distance or break is good.
1, smell: use lighter ignited 3 seconds after blow out, the smell of it, identify it and new material PP difference, one should note that some color toner, smell great, will cover PP (PP renewable materials) part of the taste, don't worry, there's another way.2, color law: every belt is better than impenetrable, no matter what color.3, look shiny: gloss better than no gloss, gloss is the so-called material itself has, just as the same color, the color of the surface material is.
