There are mainly unqualified items of dip stripping performance and water absorption thickness expansion rate. The dip peeling performance is to inspect whether there is peeling and delamination between the adhesive layers of wood-based panels or between the veneer and the substrate. The main factors affecting the dip stripping performance are:
First, the production process control of the enterprise is rough, and the moisture content difference between the core plate and the core plate is too large;
Second, the thickness of the plate core is uneven and the quality of the plate core is poor;
Third, the quality of adhesive is poor or the uniformity of sizing is poor, or the water resistance of adhesive is poor. The use of such plates for furniture processing or decoration will shorten the service life of the finished products. Once the indoor relative humidity is too high, the furniture or decoration objects will be seriously deformed or even scrapped; The water absorption thickness expansion rate mainly reflects the dimensional stability of MDF when the ambient humidity changes. The unqualified index will easily lead to problems such as moisture deformation and excessive expansion of MDF during use. The reason why the water absorption thickness expansion rate is unqualified is mainly because the manufacturer does not control the quality of raw materials, the quality of adhesive, the amount of glue, the amount of waterproof agent, the hot-pressing process parameters, and the density and moisture content of the product well.
