Pp hollow sheet is a light weight, waterproof, moisture-proof, anti-aging, corrosion resistance, rich color of the new type of environmental protection packaging materials, mainly used in electronics, packaging, machinery, food, advertising and other industries, the use is very broad, so next, to the forest manufacturers to share the three methods for judging the quaility of pp hollow sheet.
1. First of all, we want to see the hardness of the corrugated sheet, the hardness of the general sheet is poor, with a light pinch edge parts will appear sag phenomenon, some even sag can not return, hard tearing can be hollow plate torn. And the plank with good material pledges is stronger, tenacity is tall, still be torn not easily.
2. Secondly, observe the material of the board, not only the surface, but also the gloss of the surface and the color of the cross-section. High grade plank is to use brand-new makings make it, for instance glossiness is even, and the plank of common makings make it, may appear pitted reach spot.
3. Finally, we look at the weight. Generally speaking, the thicker the plate is, the higher the weight will be, the higher the toughness will be, and the higher the price will be.
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