The way that the sound wave transmits through the door is mainly the door leaf and the door gap. Therefore, to obtain a sound insulation door with high sound insulation capacity, it is necessary to start from the above two aspects.
(1) Improve the sound insulation of the door leaf
In order to ensure the door closing is light and flexible, it is impossible to excessively increase the door leaf and reorganize the method to obtain a higher sound insulation capacity. You can use:
1) Combining materials with different acoustic resistance to form a multi-layer composite door leaf;
2) Prevent the anastomosis effect of the panel from appearing in the effective frequency range to reduce the sound insulation.
(2) Improve the sealing measures of the door gap
1) The effect of the door gap on the sound insulation is the change in the sound insulation when different door gap sealing methods are used on the same door;
2) The method of sealing the door gap.
a. Early "9" shaped rubber sealing strip;
b. Adopt dual-channel sealing strip measures;
c. The muffler effect of the door gap muffler.
