CN102831886A

CN102831886A - Silencing cotton structure

Info

Publication number: CN102831886A
Application number: CN2012103045077A
Authority: CN
Inventors: 何学斌; 罗敏雄; 张秀平
Original assignee: GUANGZHOU TECHNIC COMPOUND MATERIAL CO Ltd
Current assignee: GUANGZHOU TECHNIC COMPOUND MATERIAL CO Ltd
Priority date: 2012-08-24
Filing date: 2012-08-24
Publication date: 2012-12-19

Abstract

The invention discloses a silencing cotton structure. Multiple fiber layers with high fiber apparent densities and multiple fiber layers with low fiber apparent densities are stacked in a staggered manner to form the silencing cotton structure, and each fiber layer with the high fiber apparent density is of an S-shaped structure. Compressive resilience performance in two dimensions of the silencing cotton structure is excellent owing to the fiber layers with the high fiber apparent densities and the S-shaped structures, so that the appearance and the dimensions of silencing cotton can be kept for a long time, and an optimal silencing effect can also be kept for a long time.

Description

A kind of noise elimination cotton knot structure

Technical field

The present invention relates to the noise reduction deadener, particularly a kind of cotton structure of eliminating the noise.

Background technology

Noise pollution in daily life, commercial production and the business environment is very serious, the quality of people's work and life is brought have a strong impact on.In order to reduce the harmful effect that noise pollution produces, noise elimination cotton that can noise elimination noise reduction has obtained using widely.

At present, cotton manyly processes of eliminating the noise by fiber-like material, main adopt three kinds of construction structures are arranged: a kind of is the apparent density cotton knot structure of eliminating the noise relatively more uniformly, its each also comparatively even to rebound resilience, but rebound resilience is not very outstanding, sound insulation is relatively poor; Another kind of noise elimination cotton knot structure is made up of the bigger fibrage of multilayer apparent density; Each fibrage is parallel and pile up obliquely in the same direction, and for filling the lower fibrage of apparent density, all directions rebound resilience of this noise elimination cotton knot structure is different between the bigger fibrage of adjacent apparent density; On the direction vertical with fibrage; Rebound resilience is very poor behind the pressurized, occurs permanent strain easily, and distortion back soundproof effect just can seriously descend; And the fibrage that the apparent density between the bigger fibrage of apparent density is lower can form the transaudient passage of straight line, influences the noise elimination effect.The third noise elimination cotton knot structure is to be piled up by the bigger V-type fibrage of density to form, and this structure is good in the rebound resilience of two side directions of V-structure, and rebound resilience is very poor on the stacking direction of V-structure, and this makes its usable range limited.And it is aspect noise reduction equally, and the fibrage that the fiber apparent density that exists between v-shaped structure is lower only forms simple passage uniformly, and this has also influenced its noise elimination effect.

Summary of the invention

The object of the present invention is to provide that a kind of each is all better to the pressurized rebound resilience, and the noise elimination effect cotton knot structure of also better eliminating the noise.

Noise elimination cotton knot structure of the present invention; Comprise fibrage and the less fibrage of fiber apparent density that the multi-layer fiber apparent density is bigger; Fibrage that the fiber apparent density is bigger and the less fibrage of fiber apparent density are staggeredly stacked, the S-type structure of the fibrage that each fiber apparent density is bigger.

Noise elimination cotton knot structure of the present invention, the S-type structure of the fibrage that the fiber apparent density is bigger, it can all provide good pressurized rebound performance at two-dimensional direction, makes the noise elimination cotton can keep physical dimension more muchly, keeps best noise elimination effect more muchly.In addition; Sound channel in the less fibrage formation of fiber apparent density; Because the less fibrage both sides of fiber apparent density are the bigger fibrage of fiber apparent density of S type; Its passage bent angle that forms sound is many, length is long, sound through the time absorbed chance significantly increase, thereby further improved the noise elimination effect of noise elimination cotton.

Description of drawings

Fig. 1 is a kind of synoptic diagram of the cotton knot structure of eliminating the noise.

Fig. 2 is the synoptic diagram of another kind of noise elimination cotton knot structure.

Fig. 3 is the synoptic diagram of another noise elimination cotton knot structure.

Fig. 4 is the synoptic diagram of another noise elimination cotton knot structure.

Fig. 5 is a kind of synoptic diagram of the cotton knot structure of eliminating the noise also.

Embodiment

Like Fig. 1; A kind of noise elimination cotton knot structure; Comprise bigger fibrage of multi-layer fiber apparent density 1 and the less fibrage 2 of fiber apparent density, the fibrage 1 that the fiber apparent density is bigger is staggeredly stacked with the less fibrage 2 of fiber apparent density, and the fibrage that each fiber apparent density is bigger is S-type.

The crest and the wave trough position of the S type structure of each S fiber type layer can be consistent, like Fig. 1, Fig. 2.The crest of the S type structure of each S fiber type layer and the trough size that evenly distributes is identical, like Fig. 1.Also but trough is little and crest is big, like Fig. 2.Can also trough big and crest is little, like Fig. 3.

The crest of the S type structure of each S fiber type layer and trough also can be mutual dislocation and form various difform S fiber type layers; Like Fig. 4, it makes part position close between the S fiber type layer, occurs the strong point easily behind the slight pressurized; The pressurized rebound resilience can be better; The variable variation of width appears in the sound channel that the less fibrage of fiber apparent density between the while S fiber type layer forms, and the sound channel bent angle that the less fibrage of each fiber apparent density forms is many, constitutes the structure in similar labyrinth jointly; Thereby more help the absorption of sound in the noise elimination cotton, improve the cotton noise elimination effect of eliminating the noise further.

The S type structure of each S fiber type layer can also curvature have nothing in common with each other, and like Fig. 5, the S type structure of different curvature makes the shape of sound channel of adjacent S fiber type interlayer more complicated and changeable, thereby is more conducive to the absorption of sound, raising noise elimination effect further.

Claims

1. noise elimination cotton knot structure; Noise elimination cotton knot structure; Comprise fibrage and the less fibrage of fiber apparent density that the multi-layer fiber apparent density is bigger; Fibrage that the fiber apparent density is bigger and the less fibrage of fiber apparent density are staggeredly stacked, and it is characterized in that: the S-type structure of the fibrage that each fiber apparent density is bigger.

2. noise elimination cotton knot structure according to claim 1 is characterized in that: the crest of the fibrolaminar S type structure that each fiber apparent density is bigger and trough mutual dislocation form various difform S type structures.

3. noise elimination cotton knot structure according to claim 1 and 2 is characterized in that: the curvature of the fibrolaminar S type structure that each fiber apparent density is bigger has nothing in common with each other.