The following three testing methods are recommended testing methods for ordinary consumers, and are short, flat and fast testing methods based on the characteristics of wooden doors on the market.
1. Look at the weight. The formula of sound insulation is directly related to the density of the material. Therefore, high-density sound insulation is relatively good, and molded doors are relatively light. This is the source of poor sound insulation of molded doors. But be careful: adding soundproof cotton in the middle of the flat hollow door will sound more sound than solid wood flush doors.
2. Look at the thickness of the wooden door surface laminate. The thicker the surface layer, the better the sound insulation effect. Generally, the surface layer of mdf wood door should be 8mm thick. The thickness of the surface layer and the flatness are better, but the cost will increase. However: the iron sheet of the iron plate fireproof door is 3mm thick, and the sound insulation effect is also good.
3. Look at the flatness of the wooden door. The flatter the wooden door, the better the combination with the door cover, regardless of the structure. As long as the deformed wooden door is not soundproof, it will leak air.
There is also a slightly more professional, the quality of the expansion glue between the door cover and the wall, if this is not good, it will seriously affect the sound insulation.
Note: In fact, the sound insulation of the door and window industry has a national level like fire doors, rather than a single item of content. The concept of "sound insulation" and "sound absorption". The principle of sound insulation depends on the quality or the density of the material (when the overall weight of the iron plate per unit area is less than the wooden door, its sound insulation is not as good as the wooden door), and the sound absorption depends on the fine surface area of the material and the uneven surface Space (rock wool, mineral wool, and foam are all sound-absorbing materials, not sound-insulating materials).
