A kind of sound insulation coated cotton and its production process
A production process and film-covering technology, applied in the field of sound-absorbing materials, can solve problems such as environmental pollution, cotton wool and cotton dust flying, and achieve the effects of reducing noise, convenient construction, and protecting human health
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[0024] Such as Figure 1-2 As shown, a sound-insulating film-coated cotton includes glass wool 1, and the top surface and both sides of the glass wool 1 along its length direction are covered with an upper plastic film 2 and extend to the bottom surface. A through hole 4 is provided, and the glass wool can absorb sound by using the through hole. The bottom surface of the glass wool 2 along its length direction is covered with a lower plastic film 3 , and the lower plastic film 3 is covered and connected to the upper plastic film 2 by hot melt adhesive. Both ends of the upper plastic film 2 and the lower plastic film 3 along the length direction are sealed by a hot melt machine. The closed upper plastic film 2 and the lower plastic film 3 are used to block the fly generated by the glass wool during transportation or use, so as to protect the environment.
[0025] A production process of sound-insulating film-coated cotton is characterized in that: its specific steps are as fo...
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