A noise-absorbing pad with the function of purifying the air in the ceiling of the car

Abstract

The invention provides a sound elimination pad with an air purifying function on a car roof. The sound elimination pad comprises a regenerated fiber layer which is hot-pressed into a half-frame shape. An opening of the half-frame-shaped regenerated fiber layer is arranged downwards. A PEF layer is bonded to the upper end face of the regenerated fiber layer through polyene adhesives. A half-frame-shaped pure cotton layer is arranged on the inner surface of the half-frame-shaped regenerated fiber layer 1. An opening of the half-frame-shaped pure cotton layer is also arranged downwards. A half-frame-shaped purifying layer with a downward opening is arranged on the inner surface of the half-frame-shaped pure cotton layer. According to the sound elimination pad, by the adoption of the half-frame-shaped arrangement, the air purifying effect can be very good, diffusion of fragrance is slow, the service life can be prolonged when the sound elimination pad is used in an effective space, and the cost is lowered; as a result of the arrangement, the structure is simple, the space is saved, the sound insulation effect can be enhanced, the air can be purified, fresh fragrance can be diffused, the car roof is more resistant to a high temperature, and the heat insulation effect is enhanced.

Description

technical field [0001] The invention relates to the production field of automobile interior decoration, in particular to a sound-absorbing pad used for the roof of an automobile with the function of purifying air. Background technique [0002] Car noise not only increases the fatigue of drivers and passengers, but also affects the driving safety of cars. On the other hand, noise also has a serious adverse effect on the digestive system and cardiovascular system, which can cause indigestion, loss of appetite, nausea and vomiting, which will lead to an increase in the incidence of stomach disease and gastric ulcer disease, and increase the risk of hypertension, arteriosclerosis and coronary heart disease. The incidence rate is significantly higher than normal. Noise can also cause adverse effects on the visual organs; [0003] As one of the sound insulation devices for car interiors, the sound insulation pad installed on the inner layer of the car roof has a relatively singl...

AI Technical Summary

Problems solved by technology

Noise can also cause adverse effects on the visual organs;

[0003] The sound insulation pad installed on the inner layer of the car roof is one of the sound insulation devices for car interiors. The function is relatively simple, and the sound insulation effect of the materials used is not very good.

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