The warpage of PVC celuka board is the cause in many aspects, and the main problem is that the stability of the floor is not well controlled. Whether it is coiled flooring or sheet flooring, most of them appear in pvc flooring with a base layer. Because pvc floor is affected by environmental factors, the changes of thermal expansion and contraction are different, which leads to the expansion or contraction of the floor. The thermal expansion and contraction changes of different coefficients are different, so the floor warps. In floor production, attention should be paid to the reasonable use and balanced collocation of materials to reduce the deformation of the floor.
　　 1. Check whether the temperature of the pvc board is too high during demolding. If so, lower the barrel temperature.
　　 2. Is it the deformation caused by internal stress? If so, lower the injection pressure.
　　3. Is the cross section irregular and the shrinkage uneven? If so, redesign the mold with a uniform cross section to make it evenly filled.
　　 4. The ejector pin is unbalanced. If so, adjust or dispose of the release pin.
　　The reason for the warpage of the pvc board is that the production process of the board is not in place, and the good board needs to have a consistent paving density and a symmetrical structure. If the difference is too large, the internal expansion and contraction of the plate will be inconsistent, resulting in internal stress. The second is the improper control of the moisture content of the sheet, and the moisture content of the sheet exceeds or falls below the environmental humidity, which is likely to cause warpage and deformation, so the moisture content needs to be kept within the normal range. The third is that the density of the board is unqualified. The low density of the board will cause the processed surface to be unsmooth and easy to be deformed by moisture absorption. Fourth, the waterproof performance of the board is unqualified, and it is easy to absorb moisture and deform. Fifth, the maintenance is unqualified. If the pvc board is not stored in a dry and ventilated environment, it will easily affect the stability of the board and cause problems such as deformation.
　　From a mechanical point of view, the warping deformation of the plate is the result of the release of internal stress. If no measures are taken during the production process, the plate cannot offset the internal stress, resulting in warpage and deformation of the pvc plate when produced under pressure and high humidity. After reading these, if you have other questions. Welcome to contact us for consultation.

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