Car carpet with high sound-absorbing performance and preparation method thereof

Abstract

The invention discloses a vehicle carpet high in sound absorption performance and a manufacturing method thereof. The carpet is formed by combining a carpet blank, a bonding layer, a composite sound absorption pad and sound absorption foam from top to bottom. The composite sound absorption pad is a composite material pad which is formed by mixing 30% of cotton fibers and 70% of polyester fibers, in this way, holes still exist after the cotton fibers are formed through roasting, the sound absorption capacity is improved, and the requirement for the strength of polyester products can also be met; meanwhile, all the layers are arranged according to a certain density ratio, and thus it is guaranteed that the optimum sound absorption effect can be achieved.

Description

technical field [0001] The invention belongs to textile manufacturing technology, in particular to a car carpet. Background technique [0002] The car carpet is one of the sound-absorbing interior parts of the passenger car. It is usually installed on the floor of the car, and the second row of seats is installed on it. The main functions of car carpets are: ① Cover the sheet metal inside the car and play a decorative role. ② Absorb the reverberation sound in the car and improve the sound quality. ③ Block the noise transmitted from the bottom sheet metal. ④ Reduce the vibration of the car during driving. ⑤You will feel comfortable when you step on the carpet. ⑥ Block the heat source outside the car. [0003] The basic requirements for the materials of car carpets are that they can be molded, have good manufacturability, and the molded products are not damaged; they can have good sound absorption; they can have good wear resistance. [0004] The sound absorption mechani...

AI Technical Summary

Problems solved by technology

[0005] Existing passenger car carpet materials are composite film blanks, which use polyester blanks as the surface, polyethylene as the adhesive layer, and a layer of polyester sound-absorbing Felt, the bottom is PUR sound-absorbing foam, the carpet of this structure, after the interlayer polyester sound-absorbing felt is baked, the material will become denser, resulting in reduced sound absorption

See Figure 1 for the sound absorption of this structural material, according to Figure 1 test data analysis, sound absorption of materials Low, the voice of talking in the car is relatively unclear, and the comfort is low

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