Strong sound-absorbing part for traffic, its preparation method and application

A manufacturing method and sound absorption technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., to achieve the effect of quiet travel and riding environment, noise reduction, adverse effects and safety problems

Active Publication Date: 2016-07-13
PAN ASIAN MICROVENT TECH JIANGSU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a strong sound-absorbing part for traffic and its preparation method and application, which can obviously absorb various frequency noises of traffic, greatly reduce the noise value of traffic facilities, and give people a quiet travel and ride environment that will significantly reduce adverse health effects and safety concerns due to traffic noise fatigue

Method used

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  • Strong sound-absorbing part for traffic, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A strong sound-absorbing part for transportation, comprising: an expanded polytetrafluoroethylene film layer or an expanded polytetrafluoroethylene modified film layer 1, a bonding firm layer 2 and a sound-absorbing sheet layer 3, the bonding The firm layer 2 is a PU polyurethane adhesive bonding layer, and the method for preparing specifically comprises the following steps:

[0033] Material preparation of expanded polytetrafluoroethylene film layer or expanded polytetrafluoroethylene modified film layer 1 and sound-absorbing sheet layer 2, blanking, die-cutting of sound-absorbing sheet layer 3, expanded polytetrafluoroethylene The ethylene film layer or the expanded polytetrafluoroethylene modified film layer 1 is unwound on the coating machine, and then the expanded polytetrafluoroethylene film layer or the expanded polytetrafluoroethylene modified film layer 1 is coated with a roller of the coating machine Attaching the firm layer 2, the expanded polytetrafluoroethy...

Embodiment 2

[0035] A strong sound-absorbing part for transportation, comprising: an expanded polytetrafluoroethylene film layer or an expanded polytetrafluoroethylene modified film layer 1, a bonding firm layer 2 and a sound-absorbing sheet layer 3, the bonding The firm layer 2 is a hot-melt micropowder welding layer, and the method for preparation specifically includes the following steps:

[0036] Material preparation of expanded polytetrafluoroethylene film layer or expanded polytetrafluoroethylene modified film layer 1 and sound-absorbing sheet layer 3, blanking, die-cutting of sound-absorbing sheet layer 3, The fluoroethylene film layer or the expanded polytetrafluoroethylene modified film layer 1 is sprayed with a solid layer 2, and the expanded polytetrafluoroethylene film layer or the expanded polytetrafluoroethylene modified film layer 1 is combined with the die-cut molded The sound-absorbing sheet layer 3 is laminated and coated, the seams are heated and sealed, the rollers are ...

Embodiment 3

[0038] A strong sound-absorbing part for transportation, comprising: an expanded polytetrafluoroethylene film layer or an expanded polytetrafluoroethylene modified film layer 1, a bonding firm layer 2 and a sound-absorbing sheet layer 3, the bonding The firm layer 2 is welded with a low-density grammage non-woven fabric, and the preparation method specifically includes the following steps:

[0039]Material preparation of expanded polytetrafluoroethylene film layer or expanded polytetrafluoroethylene modified film layer 1 and sound-absorbing sheet layer 3, blanking, die-cutting of sound-absorbing sheet layer 3, The fluoroethylene film layer or the expanded polytetrafluoroethylene modified film layer 1 is laid with a bonding firm layer 2, and the expanded polytetrafluoroethylene film layer or the expanded polytetrafluoroethylene modified film layer 1 and the die-cut molded The sound-absorbing sheet layer 3 is laminated and coated, the seams are heated and sealed, the rollers are...

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Abstract

The invention discloses a strong sound absorption member for traffics and its preparation method and application, the sound absorption member includes a micropore sound absorption film layer, a fitting firm layer and a sound absorption sheet material layer. The preparation method is as follows: preparing materials of the micropore sound absorption film layer and the sound absorption sheet material layer, feeding the materials, die cutting the sound absorption sheet material layer for molding, unreeling the micropore sound absorption film layer, arranging the fitting firm layer in the micropore sound absorption film layer, fitting the micropore sound absorption film layer and the die-cut molded sound absorption sheet material layer for coating and compounding, heating a joint seam for sealing, processing a hole or a hasp, reinforcing a honing seam for connection, testing, ripening at room temperature, storing, inspecting and packing. The strong sound absorption member for the traffics is used for seat cushions in carriage of transportation equipment, seat cushions of cars and wall hanging members in a subway platform. The strong sound absorption member can obviously absorb various frequency noises of the traffics, greatly reduces the noise value of traffic facilities, gives a person a serene trip and travel environment, and greatly reduces adverse effects on health and safety issues caused by traffic noise fatigues.

Description

technical field [0001] The invention relates to the field of sound-absorbing parts, in particular to a strong sound-absorbing part for traffic and its preparation method and application. Background technique [0002] As the production of urban rail transit equipment and automobiles increases year by year, rail transit equipment and automobiles have become popular in many areas, and noise control of rail transit and automobiles has gradually become a sensitive issue. Rail traffic and automobile noise can be divided into wheel-rail friction noise, impact noise, roaring noise, power noise, footsteps of people, and human high-frequency speech noise. Many field tests have shown that the spectrum of radiated noise from train operation is characterized by medium and low frequencies, the peak frequency is in the range of 63~500Hz, and the noise in stations and cars can generally reach more than 80dB. When the vehicle speed exceeds 50km / h, the noise generated by wheel rails and whee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/02B32B9/04B32B17/02B32B17/10B32B7/12B32B27/30B32B33/00
Inventor 张云丁荣华昌建忠
Owner PAN ASIAN MICROVENT TECH JIANGSU CORP
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