CN111391423B - Multilayer structure sound insulation carpet and preparation method thereof - Google Patents
Multilayer structure sound insulation carpet and preparation method thereof Download PDFInfo
- Publication number
- CN111391423B CN111391423B CN202010219400.7A CN202010219400A CN111391423B CN 111391423 B CN111391423 B CN 111391423B CN 202010219400 A CN202010219400 A CN 202010219400A CN 111391423 B CN111391423 B CN 111391423B
- Authority
- CN
- China
- Prior art keywords
- sound
- propagation
- carpet
- sound insulation
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 39
- 230000002349 favourable effect Effects 0.000 claims abstract description 24
- 238000009792 diffusion process Methods 0.000 claims description 34
- 239000002994 raw material Substances 0.000 claims description 25
- 239000004744 fabric Substances 0.000 claims description 19
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 238000009732 tufting Methods 0.000 claims description 12
- 230000009286 beneficial effect Effects 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000002657 fibrous material Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 6
- 238000009489 vacuum treatment Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 239000006185 dispersion Substances 0.000 abstract description 6
- 230000000452 restraining effect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
- B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
- B32B3/20—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side of hollow pieces, e.g. tubes; of pieces with channels or cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
- B60N3/04—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets
- B60N3/042—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets of carpets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
- B60N3/04—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets
- B60N3/048—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets characterised by their structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Passenger Equipment (AREA)
Abstract
The invention discloses a sound insulation carpet with a multilayer structure and a preparation method thereof, wherein the sound insulation carpet separates the inner wall of an automobile compartment from the space of the automobile compartment; the sound insulation carpet is arranged on the inner wall of the automobile compartment at regular intervals; the sound-proofing carpet has a sound-proofing component; the sound insulation component is arranged between the sound insulation carpet and the inner wall of the automobile compartment; the sound insulating member has a propagation favorable portion which is a favorable portion for through propagation of noise outside the vehicle, and a propagation favorable portion which surrounds a periphery of the propagation unfavorable portion and is favorable for propagation as compared with the propagation unfavorable portion; the sound insulation component restrains the transmission of noise in a transmission mode, thereby restraining the transmission of noise to the compartment of the automobile; the sound insulation carpet provided weakens the sound energy in transmission in a mode of combining dispersion and extension under the mode of ensuring normal material consumption, enhances the sound impedance force and has higher sound insulation property.
Description
Technical Field
The invention relates to the technical field of carpets, in particular to a sound insulation carpet with a multilayer structure and a preparation method thereof.
Background
Noise generated by the running automobile and the outside of the automobile is transmitted into the automobile compartment, including but not limited to: noise from friction between the road surface and the tires, noise from the engine and the transmission, noise from the chassis of the vehicle, etc.;
the noise can be transmitted into the automobile compartment through the automobile compartment, so that the riding feeling and static escape of the automobile are influenced, generally, manufacturers can insulate sound by paving a carpet, the carpet is provided with sound insulation materials, and most manufacturers can improve the sound insulation of the compartment by stacking (increasing the material consumption and using more expensive and rare materials);
schematic illustration: the common sound insulation carpet has a structure with less than 5 layers, and the sound insulation performance is improved by increasing the using amount to 8 layers; the common sound insulation carpet is a fiber fabric, has low cost, has filling power but poor resilience after being pressed, is made of wool which is more expensive and rare, has high filling power and good resilience after being pressed;
therefore, the stacking mode directly increases the raw material purchasing difficulty, the preparation process and the preparation cost of the carpet, and is not suitable for each automobile; therefore, a sound insulation carpet for suppressing noise propagation from a propagation manner is required in the vehicle compartment to ensure higher sound insulation performance in a normal material usage manner.
Disclosure of Invention
In view of the problems of the prior art, the invention provides a sound-insulating carpet with a multilayer structure and a preparation method thereof, wherein the sound-insulating part is used for inhibiting the transmission of noise in a transmission mode, so that the transmission of noise to the carriage of an automobile is inhibited; the sound insulation carpet weakens the sound energy in transmission in a mode of combining dispersion and extension under the condition of ensuring normal material consumption, enhances the sound impedance force and has higher sound insulation property.
In order to accomplish the above objects, the present invention provides a soundproof carpet having a multi-layered structure,
the sound insulation carpet separates the inner wall of the automobile compartment from the space of the automobile compartment;
the sound insulation carpet is arranged on the inner wall of the automobile compartment at regular intervals;
the sound-proofing carpet has a sound-proofing component; the sound insulation component is arranged between the sound insulation carpet and the inner wall of the automobile compartment;
the sound insulating member has a propagation favorable portion, which is a favorable portion for through propagation of noise outside the vehicle, and a propagation unfavorable portion, which is favorable for propagation compared with the propagation unfavorable portion.
As a further optimization of the above-described solution,
the propagation unfavorable part is in a frame shape and protrudes towards the direction of the inner wall of the automobile compartment, the propagation unfavorable part and the inner wall of the automobile compartment are in surface contact and are tightly attached, the propagation forceful part is arranged in the area in the frame of the propagation unfavorable part, and the propagation unfavorable part is adjacent to the periphery of the propagation favorable part;
the straight line distance of the unfavorable propagation part protruding towards the inner wall of the automobile compartment is equal to the straight line distance of the favorable propagation part to the inner wall of the automobile compartment.
As a further optimization of the above-described solution,
the sound insulation carpet is sequentially provided with a receiving layer, a diffusion layer and a decoration layer from bottom to top;
the lower end of the receiving layer abuts against the propagation facilitating portion;
the receiving layer upper end abuts against the diffusion layer;
the decorative layer covers the upper end of the diffusion layer;
and a sound channel for noise to pass through and disperse noise is formed between the receiving layer and the diffusion layer in a communication manner, and the noise which passes through the transmission beneficial part directly enters the sound channel through the receiving layer.
As a further optimization of the above-described solution,
the unfavorable part of propagation is the rectangle frame that has thickness, and the shape of rectangle frame matches with the shape of automobile compartment inner wall, the inside hollow structure that is of rectangle frame.
As a further optimization of the above-described solution,
the interior of the rectangular frame is subjected to vacuum treatment, and the interior of the rectangular frame is of a vacuum structure after the vacuum treatment.
As a further optimization of the above-described solution,
the transmission beneficial part is a fluff layer, and the fluff height of the fluff layer is equal to the linear distance from the transmission beneficial part to the inner wall of the automobile compartment.
As a further optimization of the above-described solution,
the receiving layer is composed of a plurality of transversely extending straight pipes;
the diffusion layer is formed by a transversely bent pipe;
the straight pipes are longitudinally arranged and not communicated, the bent pipe and the straight pipes are tightly attached up and down, two end parts of the straight pipes extend upwards and are respectively communicated with two end parts of the bent pipe, and small holes facing the propagation beneficial parts are formed in the bottom surfaces of the straight pipes.
As a further optimization of the above-described solution,
the overlooking cross sections of the receiving layer, the diffusion layer and the decorative layer are consistent with the overlooking cross section of the inner wall of the automobile compartment;
and the inner wall of the automobile compartment is at least one of the bottom surface, the top surface and the side surface of the compartment.
The invention also provides a preparation method of the multilayer structure sound insulation carpet based on any one of the above steps, which comprises the following steps:
a. selecting raw materials of the fluff layer, preheating and shaping the fluff layer into fiber materials, and spinning the fiber materials into bottom fabrics;
b. tufting fiber yarns, and after tufting and shaping, tufting the lower end of the bottom fabric in a whole row at a high speed by using a row needle machine to lead the fiber yarns so as to form neat and dense loop velvet on the surface of the carpet; coating adhesive on the back of the blanket, and bonding the bottom fabric and the tufting into a firm whole to form a fluff layer;
c. selecting a hardenable raw material, filling the raw material into a tooling die, cooling and hardening the raw material after demolding to form a hollow rectangular frame with a specified specification, coating an adhesive on the back of the rectangular frame, and adhering the rectangular frame to the edge of the fluff layer to form a sound insulation part;
d. selecting raw materials with elasticity, filling the raw materials into a tool die, and forming a diffusion layer and a receiving layer which are integrally formed after demolding;
e. selecting raw materials of the decorative layer, spinning the raw materials into a top fabric, forming the decorative layer at the upper end of the top fabric through a needling process, coating an adhesive at the lower end of the top fabric, and adhering the adhesive and the diffusion layer into a firm whole to form the sound insulation carpet;
f. covering the sound-insulating carpet on the sound-insulating part, bonding the sound-insulating carpet by using an adhesive, cutting the sound-insulating carpet according to the shape of the sound-insulating part, and uniformly performing a taping process on the peripheries of the sound-insulating carpet and the sound-insulating part after cutting;
g. and carrying out nondestructive inspection on the sound insulation carpet and the sound insulation part, completing cleaning and packaging, issuing a product qualification certificate and finally putting the product qualification certificate into a warehouse.
As a further optimization of the above scheme, in the step c, after the rectangular frame is shaped, air in the rectangular frame is substantially pumped out through an air pumping device, so that the inside of the rectangular frame is in a vacuum state;
in the step d, after the diffusion layer and the receiving layer are integrally formed, sound absorption units are filled into the diffusion layer and the receiving layer at intervals, and the sound absorption units are preferably section-shaped sound absorption cotton.
The sound insulation carpet with the multilayer structure and the preparation method thereof have the following beneficial effects:
1. the sound insulation component is provided with a favorable transmission part and an unfavorable transmission part, when the noise is transmitted to the sound insulation component through the inner wall of the automobile compartment, the unfavorable transmission part has a sound blocking effect for the vacuum mechanism, and the noise cannot be transmitted outwards through the unfavorable transmission part;
the transmission beneficial part is positioned in the center of the transmission unfavorable part and is a down convex fluff layer which is used as a layer contacting noise firstly and mainly has the functions of intensively absorbing sound and reflecting partial sound, specifically, the fluff layer is provided with dense and convex loop fluff to form a rough surface and keep certain fluffiness, the sound can be diffusely reflected, and micro gaps are arranged among the loop fluff to weaken the energy of the sound;
on one hand, the propagation unfavorable part protrudes downwards, so that the sound insulation carpet above the propagation unfavorable part forms a floating structure for stopping the solid propagation effect, and the vibration of the sound insulation carpet is reduced when the sound insulation carpet is contacted with the solid propagation effect, so that the noise is reduced;
on the other hand, the unfavorable transmission part protrudes downwards, and a space is also created for the favorable transmission part, so that the fluff layer can keep fluffy degree, and the unfavorable transmission part also replaces the fluff layer to bear pressure when being pressed, so that the fluff layer has a certain fluff height after being pressed, and the resilience of the fluff layer is ensured;
in general, the sound insulation component restrains the transmission of noise in a transmission mode, thereby restraining the transmission of noise to the automobile compartment;
3. the sound insulation carpet has three layers, wherein a receiving layer and a diffusion layer are communicated to form sound channels distributed up and down, sound penetrating through a fluff layer enters different straight pipes for dispersion and isolation, and a zigzag bent pipe prolongs the transmission path of the sound; generally, the arranged sound insulation carpet weakens the sound energy in transmission in a mode of combining dispersion and extension under the condition of ensuring normal material consumption, enhances the sound impedance force and has higher sound insulation performance.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic side view of the overall structure of the present invention.
In the figure: sound-proof carpet 1, sound-proof component 2, receiving layer 3, diffusion layer 4, decorative layer 5, sound channel 6, rectangular frame 7, fluff layer 8, straight pipe 9, bent pipe 10, and loop pile 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the sound insulation carpet with a multi-layer structure according to the present invention has a sound insulation carpet 1 separating an inner wall of a vehicle compartment from a space of the vehicle compartment; the sound insulation carpet 1 is arranged on the inner wall of the automobile compartment at regular intervals; the soundproof carpet 1 has a soundproof member 2; the sound insulation component 2 is arranged between the sound insulation carpet 1 and the inner wall of the automobile compartment; the sound insulating member 2 has a propagation favorable portion which is a favorable portion for through propagation of noise outside the vehicle, and a propagation unfavorable portion which is favorable for propagation as compared with the propagation unfavorable portion.
In the embodiment, the unfavorable propagation part is in a frame shape and protrudes towards the inner wall direction of the automobile compartment, the unfavorable propagation part and the inner wall of the automobile compartment are in surface contact and are tightly attached, the powerful propagation part is arranged in the area inside the frame of the unfavorable propagation part, and the unfavorable propagation part is adjacent to the periphery of the favorable propagation part;
the linear distance of the unfavorable propagation part protruding towards the inner wall of the automobile compartment is equal to the linear distance of the favorable propagation part from the inner wall of the automobile compartment;
the favorable propagation part is positioned at the center of the unfavorable propagation part and is a downwards convex fluff layer 8, the fluff layer 8 is used as a layer which is firstly contacted with noise and mainly has the functions of intensively absorbing sound and reflecting partial sound, particularly, the fluff layer 8 is provided with dense and convex loop fluff 11 to form a rough surface and keep certain fluffiness, the sound can be diffusely reflected, and micro gaps are arranged among the loop fluff 11 to weaken the energy of the sound;
on one hand, the unfavorable transmission part protrudes downwards, so that the sound insulation carpet 1 above the unfavorable transmission part forms a floating structure, the solid transmission effect is cut off, the vibration of the sound insulation carpet is reduced when the sound insulation carpet is contacted with the sound, and the noise is reduced; on the other hand, the unfavorable transmission part protrudes downwards, and a space is also created for the favorable transmission part, so that the fluff layer 8 can keep fluffy degree, and the unfavorable transmission part also replaces the fluff layer 8 to bear pressure when being pressed, so that the fluff layer 8 has a certain fluff height after being pressed, and the resilience of the fluff layer 8 is ensured; in general, the sound insulation member 2 suppresses the transmission of noise in a transmission manner, thereby suppressing the transmission of noise into the vehicle compartment;
in the present embodiment, the sound-insulating carpet 1 has a receiving layer 3, a diffusion layer 4, and a decorative layer 5 in this order from the bottom up; the lower end of the receiving layer 3 abuts against the propagation facilitating portion; the upper end of the receiving layer 3 is abutted to the diffusion layer 4; the decorative layer 5 covers the upper end of the diffusion layer 4; and a sound channel 6 for noise to pass through and disperse noise is formed between the receiving layer 3 and the diffusion layer 4 in a communication way, and the noise which passes through the transmission beneficial part directly enters the sound channel 6 through the receiving layer 3.
Further, the propagation unfavorable portion is a rectangular frame 7 with thickness, the shape of the rectangular frame 7 is matched with the shape of the inner wall of the automobile compartment, the inside of the rectangular frame 7 is of a hollow structure, the inside of the rectangular frame 7 is subjected to vacuum treatment, and the inside of the rectangular frame 7 is of a vacuum structure after the vacuum treatment.
Furthermore, the propagation facilitating portion is a pile layer 8, and the pile height of the pile layer 8 is equal to the straight distance of the propagation facilitating portion from the inner wall of the vehicle compartment.
Specifically, the receiving layer 3 is composed of a plurality of transversely extending straight pipes 9; the diffusion layer 4 is formed by a transversely zigzag bend 10; the straight pipes 9 are longitudinally arranged and are not communicated, the bent pipe 10 and the straight pipes 9 are tightly attached up and down, two end parts of the straight pipes 9 extend upwards and are respectively communicated with two end parts of the bent pipe 10, the bottom surfaces of the straight pipes 9 are provided with small holes facing to the propagation beneficial part, and in the embodiment, the overlooking sections of the receiving layer 3, the diffusion layer 4 and the decorative layer 5 are consistent with the overlooking section of the inner wall of the automobile compartment; the inner wall of the automobile compartment is at least one of a compartment bottom surface, a compartment top surface and a compartment side surface; the receiving layer 3 and the diffusion layer 4 are communicated with each other to form sound channels 6 distributed up and down, sound penetrating through the fluff layer 8 enters different straight pipes 9 for dispersion and isolation, and the zigzag bent pipe 10 prolongs the transmission path of the sound; in general, the sound insulation carpet 1 is ensured to have higher sound insulation performance by weakening the sound energy in the transmission and enhancing the sound impedance force in a mode of combining dispersion and extension under the normal material using mode.
The invention also provides a preparation method of the multilayer structure sound insulation carpet based on any one of the above, and the preparation method comprises the following steps:
a. selecting raw materials of the fluff layer 8, preheating and shaping the fluff layer into fiber materials, and spinning the fiber materials into bottom fabrics;
b. tufting fiber yarns, and after tufting and shaping, tufting the lower end of the bottom fabric in a whole row at a high speed by using a row needle machine to lead the fiber yarns so as to form neat and dense loop velvet 11 on the carpet surface; coating adhesive on the back of the blanket, and bonding the bottom fabric and the tufting into a firm whole to form a fluff layer 8; the fluff layer 8 protrudes downwards, is a rough surface compared with a plane, keeps certain fluffiness, can diffuse and reflect sound, and has tiny gaps among the loop fluff 11 to weaken the energy of the sound;
c. selecting a hardenable raw material, filling the raw material into a tool die, cooling and hardening the raw material after demolding to form a hollow rectangular frame 7 with a specified specification, coating an adhesive on the back surface of the rectangular frame 7, and adhering the rectangular frame 7 to the edge of the fluff layer 8 to form the sound insulation part 2, wherein the thickness of the sound insulation part 2 is one third of that of the sound insulation carpet 1, and the thickness of the sound insulation part 2 in the embodiment is 15 mm;
d. selecting elastic raw materials, filling the raw materials into a tool die, and demolding to form a diffusion layer 4 and a receiving layer 3 which are integrally formed; the elastic material is preferably a rubber material, so that the whole buffer property of the sound insulation carpet 1 is ensured while the sound is weakened; in addition, the integrally formed diffusion layer 4 and receiving layer 3 also improve the height of the floating structure, so that the effect of stopping the solid propagation effect is better;
e. selecting raw materials of the decorative layer 5, spinning the raw materials into a top fabric, forming the decorative layer 5 at the upper end of the top fabric through a needling process, coating an adhesive at the lower end of the top fabric and adhering the adhesive and the diffusion layer 4 into a firm whole to form the sound insulation carpet 1, wherein the thickness of the sound insulation carpet 1 is preferably 30-50mm, and in the embodiment, the thickness of the sound insulation carpet 1 is 45 mm;
f. covering the sound insulation carpet 1 on the sound insulation part 2, bonding the sound insulation carpet by using an adhesive, cutting the sound insulation carpet according to the shape of the sound insulation part 2, and uniformly performing a taping process on the peripheries of the sound insulation carpet 1 and the sound insulation part 2 after cutting;
g. the sound-insulating carpet 1 and the sound-insulating part 2 are subjected to nondestructive inspection, cleaning and packaging are completed, and a product certificate is issued and finally placed in a warehouse.
In the step c, after the rectangular frame 7 is shaped, air in the rectangular frame 7 is approximately pumped out through air pumping equipment, so that the interior of the rectangular frame 7 is in a vacuum state;
in step d, after the diffusion layer 4 and the receiving layer 3 are integrally formed, sound absorption units are filled in the diffusion layer and the receiving layer at intervals, the sound absorption units are preferably section-shaped sound absorption cotton, and the sound absorption cotton can further weaken the energy of sound in the sound channel 6, so that the sound insulation part 2 can suppress the propagation of noise in a propagation mode, and the sound insulation carpet 1 is combined to weaken the noise penetrating into the automobile compartment.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A multilayer structure sound insulation carpet which is characterized in that:
the sound insulation carpet separates the inner wall of the automobile compartment from the space of the automobile compartment;
the sound insulation carpet is arranged on the inner wall of the automobile compartment at regular intervals;
the sound-proofing carpet has a sound-proofing component; the sound insulation component is arranged between the sound insulation carpet and the inner wall of the automobile compartment;
the soundproof member has a propagation advantageous portion which is an advantageous portion for through propagation of the vehicle exterior noise, and a propagation disadvantageous portion which is advantageous in propagation compared with the propagation disadvantageous portion;
the propagation unfavorable part is in a frame shape and protrudes towards the direction of the inner wall of the automobile compartment, the propagation unfavorable part and the inner wall of the automobile compartment are in surface contact and are tightly attached, the propagation favorable part is arranged in the area inside the frame of the propagation unfavorable part, and the propagation unfavorable part is adjacent to the periphery of the propagation favorable part;
the linear distance of the unfavorable propagation part protruding towards the inner wall of the automobile compartment is equal to the linear distance of the favorable propagation part from the inner wall of the automobile compartment;
the sound insulation carpet is sequentially provided with a receiving layer, a diffusion layer and a decorative layer from bottom to top;
the lower end of the receiving layer abuts against the propagation facilitating portion;
the upper end of the receiving layer is abutted to the diffusion layer;
the decorative layer covers the upper end of the diffusion layer;
a sound channel for noise to pass through and disperse noise is formed between the receiving layer and the diffusion layer in a communication manner, and the noise which penetrates through the favorable transmission part directly enters the sound channel through the receiving layer;
the propagation favorable part is a fluff layer, and the fluff height of the fluff layer is equal to the linear distance from the propagation favorable part to the inner wall of the automobile compartment;
the receiving layer is composed of a plurality of transversely extending straight pipes;
the diffusion layer is formed by a transversely bent pipe;
the straight pipes are longitudinally arranged and not communicated, the bent pipe and the straight pipes are tightly attached up and down, two end parts of the straight pipes extend upwards and are respectively communicated with two end parts of the bent pipe, and small holes facing the propagation beneficial parts are formed in the bottom surfaces of the straight pipes.
2. The sound-proofing carpet of claim 1, wherein:
the unfavorable part of propagation is the rectangle frame that has thickness, and the shape of rectangle frame matches with the shape of automobile compartment inner wall, the inside hollow structure that is of rectangle frame.
3. The sound-proofing carpet of claim 2, wherein:
the interior of the rectangular frame is subjected to vacuum treatment, and the interior of the rectangular frame is of a vacuum structure after the vacuum treatment.
4. The carpet as claimed in claim 3, wherein:
the overlooking cross sections of the receiving layer, the diffusion layer and the decorative layer are consistent with the overlooking cross section of the inner wall of the automobile compartment;
and the inner wall of the automobile compartment is at least one of a compartment bottom surface, a compartment top surface and a compartment side surface.
5. A method for preparing the multilayer structure sound-insulating carpet based on the claim 4 is characterized in that: the method comprises the following steps:
a. selecting raw materials of the fluff layer, preheating and shaping the fluff layer into fiber materials, and spinning the fiber materials into bottom fabrics;
b. tufting fiber yarns, and after tufting and shaping, tufting the lower end of the bottom fabric in a whole row at a high speed by using a row needle machine to lead the fiber yarns so as to form neat and dense loop velvet on the surface of the carpet; coating adhesive on the back of the blanket, and bonding the bottom fabric and the tufting into a firm whole to form a fluff layer;
c. selecting a hardenable raw material, filling the raw material into a tool die, cooling and hardening the raw material after demolding to form a hollow rectangular frame with a specified specification, coating an adhesive on the back surface of the rectangular frame, and adhering the rectangular frame to the edge of the fluff layer to form a sound insulation part;
d. selecting elastic raw materials, filling the raw materials into a tool die, and demolding to form a diffusion layer and a receiving layer which are integrally formed;
e. selecting raw materials of the decorative layer, spinning the raw materials into a top fabric, forming the decorative layer at the upper end of the top fabric through a needling process, coating an adhesive at the lower end of the top fabric, and adhering the adhesive and the diffusion layer into a firm whole to form the sound insulation carpet;
f. covering the sound-insulating carpet on the sound-insulating part, bonding the sound-insulating carpet by using an adhesive, cutting the sound-insulating carpet according to the shape of the sound-insulating part, and uniformly performing a taping process on the peripheries of the sound-insulating carpet and the sound-insulating part after cutting;
g. and carrying out nondestructive inspection on the sound insulation carpet and the sound insulation component, cleaning and packaging, and finally warehousing.
6. The method for preparing a soundproof carpet having a multi-layered structure according to claim 5, wherein: in the step c, after the rectangular frame is shaped, air in the rectangular frame is approximately pumped out through air pumping equipment, so that the interior of the rectangular frame is in a vacuum state;
in the step d, after the diffusion layer and the receiving layer are integrally formed, sound absorption units are filled into the diffusion layer and the receiving layer at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219400.7A CN111391423B (en) | 2020-03-25 | 2020-03-25 | Multilayer structure sound insulation carpet and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219400.7A CN111391423B (en) | 2020-03-25 | 2020-03-25 | Multilayer structure sound insulation carpet and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111391423A CN111391423A (en) | 2020-07-10 |
| CN111391423B true CN111391423B (en) | 2022-07-19 |
Family
ID=71425474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010219400.7A Active CN111391423B (en) | 2020-03-25 | 2020-03-25 | Multilayer structure sound insulation carpet and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111391423B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107161061A (en) * | 2016-03-07 | 2017-09-15 | 马自达汽车株式会社 | The sound insulating construction of automobile |
| CN207734013U (en) * | 2017-06-29 | 2018-08-17 | 江苏智布新材料科技有限公司 | It is a kind of can sound-absorbing curtain |
| CN210083026U (en) * | 2019-01-29 | 2020-02-18 | 福建长庚新材料股份有限公司 | Automobile foot pad with thick stripes and jacquard patterns |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10160533B2 (en) * | 2014-09-23 | 2018-12-25 | The Boeing Company | Aircraft cabin pressure regulating subfloor |
| WO2018187564A1 (en) * | 2017-04-05 | 2018-10-11 | Shaw Industries Group, Inc. | Floor coverings and floor covering systems and methods of making and installing same |
-
2020
- 2020-03-25 CN CN202010219400.7A patent/CN111391423B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107161061A (en) * | 2016-03-07 | 2017-09-15 | 马自达汽车株式会社 | The sound insulating construction of automobile |
| CN207734013U (en) * | 2017-06-29 | 2018-08-17 | 江苏智布新材料科技有限公司 | It is a kind of can sound-absorbing curtain |
| CN210083026U (en) * | 2019-01-29 | 2020-02-18 | 福建长庚新材料股份有限公司 | Automobile foot pad with thick stripes and jacquard patterns |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111391423A (en) | 2020-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8637414B2 (en) | Gradient density padding material and method of making same | |
| JP5266894B2 (en) | Carpet and manufacturing method thereof | |
| JP5741270B2 (en) | Nonwoven fabric for reinforcing foam molded products and products using the same | |
| US10427624B2 (en) | Fibrous automotive cladding | |
| TW201830376A (en) | Noise attenuating trim part for a vehicle and the use thereof | |
| JP6226707B2 (en) | Floor base material, flooring material, floor structure, and method of manufacturing floor base material | |
| CN111391423B (en) | Multilayer structure sound insulation carpet and preparation method thereof | |
| JP2007146356A (en) | Nonwoven fabric and method for producing the same | |
| ATE259714T1 (en) | PROTECTIVE MULTI-LAYER MATERIAL FOR MOTOR VEHICLE CARPETS | |
| JP4712840B2 (en) | Car-mounted carpet and method for manufacturing the same | |
| JP4167505B2 (en) | Felt sound absorber with multi-density construction | |
| JP2011031649A (en) | Vehicle floor carpet and method of manufacturing the same | |
| KR101209866B1 (en) | Carpet for vehicles and manufacture method thereof | |
| KR100916279B1 (en) | A sound absorbing and insulating material for automobile | |
| KR100989171B1 (en) | Vibration and sound proof material for vehicles | |
| JPH091704A (en) | Noise insulating structure | |
| US11900907B2 (en) | Dual density acoustic insulation | |
| KR20210002910A (en) | Tire for reducing tire noise | |
| KR100603424B1 (en) | Multilayered fibrous flame retardant sound-absorbing plate | |
| KR100889853B1 (en) | A sound absorbing and insulating material for automobile | |
| WO2005010262A1 (en) | Reinforcing material for polyurethane foam molded article, cushioning material for seat, and seat | |
| JP6134147B2 (en) | Floor base material, flooring material and method for producing floor base material | |
| JP3131534U (en) | Sound absorption mat | |
| JP2024065447A (en) | Laminated sound absorbing material | |
| KR200329877Y1 (en) | Soundproof material for automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A multi-layer structure soundproof carpet and its preparation method Effective date of registration: 20230915 Granted publication date: 20220719 Pledgee: Huainan Bagongshan Branch of Huishang Bank Co.,Ltd. Pledgor: ANHUI NANAO CARPET Co.,Ltd. Registration number: Y2023980056969 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |