First, it introduces how to detect the formaldehyde content of PVC floor with simple method to open the moistureproof layer and expose the substrate. The smell of the nose is stimulating, and the formaldehyde content exceeds the standard. Formaldehyde is a colorless and soluble stimulant substance, exceeding the national standard 1.5mg/L (E1 grade), light sore throat discomfort, chest tightness, asthma, the serious cause of respiratory disease or emphysema, pregnancy syndrome, nerve, lung immunity are poisoned, especially to young children and the elderly more serious.
Secondly, how to test the quality of PVC flooring substrate with simple method? Good substrate should be high density wood fiberboard with a density of 0.83. Between 0.95g/cm3, it has good stability. The naked eye should be compared with pure color, soft and hard, and no peculiar smell.