First, the appearance of the quality of the floor
Observe the surface of multi-layer solid wood flooring:
1. Surface paint brushing gloss, paint film is full and even, with or without pin particles, indentation, sand marks.
2. The surface material has no obvious defects.
Wood floor surface should not have rot, dead knot, wormhole, cracks, clips and other defects
Second, the product size tolerances meet the requirements
1. Whether the length, width, and thickness of the product's specification and dimensions are consistent with the label of the package;
2. Whether the product's splicing and groove size splicing is tight and smooth, this can be done by spot-checking multiple floors, assembling on a flat ground, and viewing the degree of tightness and touching whether the surface is smooth or not.
Third, the intrinsic quality of the floor
Intrinsic quality is a key indicator of various wooden floors, but it is difficult to determine it intuitively, so it must pass inspection methods. Its content is as follows:
Formaldehyde emission
This problem has been found in multi-layer solid wood flooring made of urea-formaldehyde resin. If the amount of formaldehyde released into the air is too large, it will be harmful to the human body.
Multi-layer solid wood flooring contains a certain amount of formaldehyde, the national standard value is ≦1.5mg/L.
2. Moisture content
The moisture content is usually about 5 to 12%, which is qualified (different from region to region, and the standard range is also different) and does not exceed 12%.
3. Gluing performance
Multi-layer solid wood flooring is manufactured by hot-pressing the surface of the adhesive-coated plate, so the quality of the glue directly affects the use effect and the service life.
The quality of gluing can be reflected by two performance indicators, namely impregnation and gluing strength.
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