1, formaldehyde emission determination: use good sealing performance of large mouth bottles, saw the same size of a few alternative brand model, into a different bottle, install a half bottle sealed for 24 hours, open the bottle, one by one, you smell It will be compared, which brand of floor formaldehyde emission is small. If you are afraid of being inaccurate, you can have two people, have heard of each other, and have a better grasp.
2, the surface wear resistance: 180 sandpaper (sandpaper thickness, the problem is not), the same person, with the same strength and methods, continuous friction back and forth to the same place on the floor, 50 times. Floors with very low aluminum oxide or low alumina content are likely to be severely damaged. 46g wear-resistant paper flooring, the surface will not have serious scratches; 38 grams or less grams of wear-resistant paper, the surface will have varying degrees of wear; or with a key to vigorously across, the same strength under the most damaged The worst quality is worst.
3, water thickness expansion rate: sawing the size of the alternative sample, numbering, into the boiling water, 5-8 minutes. Take it out and compare the degree of swelling on their edges. It is best to use a micrometer to measure the thickness of the measuring point of the template and make a mark. After immersion in boiling water, take out and measure the thickness, and calculate the relative water swelling rate of the floor after immersion in boiling water; if the expansion rate is small, the deformation will be smaller in the future (brand flooring comparison); but if the glue is too large, it will swell The rate is small (no-name), and the odor is relatively large. You should give up buying directly.
4, the geometry of the floor: This comparison test needs to use a whole board for comparison.
a) Put the two floors together and touch the height of the joints. You can also consciously feel and compare the models selling floors. The difference between brands should be obvious.
b) Secondly, look at the tightness of the splice seam. There are a few corners on the floor and the seams will not be tight. This reflects the processing accuracy of the floor.
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