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CN111002658A - Composite material passenger car floor and manufacturing method thereof - Google Patents

Composite material passenger car floor and manufacturing method thereof Download PDF

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Publication number
CN111002658A
CN111002658A CN201911186832.6A CN201911186832A CN111002658A CN 111002658 A CN111002658 A CN 111002658A CN 201911186832 A CN201911186832 A CN 201911186832A CN 111002658 A CN111002658 A CN 111002658A
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CN
China
Prior art keywords
base plate
substrate
manufacturing
composite
vehicle floor
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.)
Pending
Application number
CN201911186832.6A
Other languages
Chinese (zh)
Inventor
孟凡颢
姚康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tengzhou Deepwater Bay Composite Technology Co Ltd
Original Assignee
Tengzhou Deepwater Bay Composite Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tengzhou Deepwater Bay Composite Technology Co Ltd filed Critical Tengzhou Deepwater Bay Composite Technology Co Ltd
Priority to CN201911186832.6A priority Critical patent/CN111002658A/en
Publication of CN111002658A publication Critical patent/CN111002658A/en
Pending legal-status Critical Current

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    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B3/26—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
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3017—Floor coverings
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a composite material passenger car floor and a manufacturing method thereof, wherein the composite material passenger car floor comprises a substrate and an enhancement layer, the substrate is a rectangular plastic plate with a plurality of through holes, the enhancement layer is thermoplastic prepreg, and the enhancement layer is tightly attached to the upper surface and the lower surface of the substrate; the base plate comprises raw materials including 20-30 wt% of high-density additives with the density of 2.0-5.0 g/cc, and is manufactured by adopting an extrusion process; the reinforced layer is manufactured by adopting a thermoplastic prepreg manufacturing process; the fiber direction of the reinforced layer comprises 1-3 of three angles of 0 degree, +/-45 degrees and 90 degrees; the substrate and the reinforcing layer are compounded together through a hot pressing process to form a complete cuboid. When the base plate and the reinforcing layer are compounded through hot-pressing equipment, the inner part of the small hole is provided with a support for preventing the small hole from collapsing.

Description

Composite material passenger car floor and manufacturing method thereof
Technical Field
The invention relates to a composite material passenger car floor and a manufacturing method thereof, belonging to the technical field of automobile part manufacturing.
Background
The floor is an important part of a passenger car, and in general, a good passenger car floor should have the following performance characteristics: the density is low, and the lightweight requirement is met; no formaldehyde is released; waterproof and no mildew occurs; the cutting is convenient, the nail-holding power is good, and the installation requirement is met; the material has good recycling property and meets the requirement of environmental protection; the thermal insulation and sound insulation material has good thermal insulation and sound insulation performance, and meets the NVH requirements of automobiles; the strength is higher because the passenger car floor is paved on the body keel, and the body keel has different intervals and spans; in addition, lower life-cycle costs, including lower maintenance costs, are required to meet business requirements.
At present, the floor used in the passenger car industry is various in types, and mainly comprises bamboo offset plates, composite wood plates, foam plastic plates, solid plastic plates and the like. The bamboo offset plate and the composite wood plate are the floors of the passenger car which are used more at present, and mainly have the defects of formaldehyde release, higher density, easy mildew and rot, high maintenance cost and incapability of recycling; the main disadvantages of the foam plastic board are low strength and poor nail holding power; the main problems of the fiber reinforced solid plastic plate are that the density is high and the fiber reinforcing effect is general.
In summary, the passenger car industry needs a new floor with the advantages mentioned above, which is a problem that the passenger car manufacturing industry has not been well solved for many years.
Currently, the building industry has a hollow plastic plate with many through small square holes, as shown in fig. 5, and the hollow plastic plate is generally used as a building template in the building industry. If the panel is used as a passenger car floor, some advantages are achieved, but the overall bending strength is not sufficient and large deformations are expected at locations where the keel span is large. In addition, the pressure resistance effect of the small square holes of the hollow plastic plate is not good, and the purpose of the small square holes of the hollow plastic plate is to reduce the weight and the cost.
Fiber prepregs are a commonly used intermediate material in the composite industry, being reinforcing fibers pre-impregnated with a thermoplastic or thermoset resin, where the fiber direction generally comprises 0 degrees, plus or minus 45 degrees and 90 degrees, with the 0 degree being generally the length direction. In order to improve the bending strength of the hollow plastic plate, the method of compounding a layer of thermoplastic fiber prepreg on the surface by a hot melting method is an effective means, because the resin of the prepreg and the resin of the plastic plate are completely compatible after the thermoplastic prepreg and the plastic plate are compounded and cured, and the resin is integrated after compounding, so that the reinforcing effect of the fiber can be exerted to the maximum extent. However, if the hot-pressing composite technology is directly adopted, because the hollow plastic plate loses the pressure resistance after being heated, the small square holes in the plate can be collapsed under the action of pressure, and the whole plate also loses a plurality of original properties and the original shape.
To solve this problem, an effective composite process is required.
Disclosure of Invention
Based on the background, the invention provides the composite material passenger car floor and the manufacturing method thereof, which can meet the related requirements of the passenger car floor and can avoid a plurality of defects of the conventional passenger car floor.
The structure of the composite material passenger car floor is shown in FIG. 1 and comprises a substrate 101 and a reinforcing layer 102, wherein the substrate 101 is a rectangular plastic plate with a plurality of through holes 103, the reinforcing layer 102 is a rectangular thermoplastic prepreg, the reinforcing layer is tightly attached to the upper surface and the lower surface of the substrate, and the size of the reinforcing layer is the same as that of the substrate; the substrate 101 comprises raw materials including 20-30 wt% of high-density additives with the density of 2.0-5.0 g/cc, and the substrate 101 is manufactured by adopting an extrusion process; the reinforced layer (102) is manufactured by adopting a thermoplastic prepreg manufacturing process, and the fiber direction of the reinforced layer (102) comprises 1-3 of three angles of 0 degree, +/-45 degrees and 90 degrees; the substrate 101 and the reinforcing layer 102 are combined together through a hot pressing process, the reinforcing layer 102 is tightly attached to the upper and lower surfaces of the substrate 101 to form a complete cuboid, as shown in fig. 2, and the hot pressing process is characterized in that when the substrate 101 and the reinforcing layer 102 are combined through a hot pressing device 301, a support for preventing the pores from collapsing is arranged in the pores.
Preferably, the material of the substrate 101 is polypropylene and other additives.
Preferably, the material of the reinforced layer 102 is polypropylene resin and glass fiber.
Preferably, before the substrate 101 and the reinforcing layer 102 are combined, the burrs 503 on both sides of the substrate are not cut off. Typically, the extrusion process is used to produce a hollow plastic sheet by cutting off the burrs 503 on both sides. When the base plate 101 and the reinforcing layer 102 are fused, burrs on both sides of the base plate are not cut off, the sealing area between the sealing cover 201 and the sealing cover 202 with the air inlet pipe and the base plate 101 can be increased, and better air tightness can be obtained. After the fusion of the substrate 101 and the reinforcing layer 102 is completed, burrs of the substrate 101 and the reinforcing layer 102 are cut off again, so that the production efficiency can be improved.
Besides reducing weight and cost, the through holes of the base plate 101 play a more important role in increasing the sound and heat insulation function of the passenger car floor to improve the NVH performance of the car. Preferably, the through-holes of the substrate 101 are circular. Passenger train floor uses bearing pressure as the owner, according to the arched bridge principle, and the circular port can bring better resistance to compression effect.
As mentioned above, the raw material of the substrate 101 includes a certain proportion of high-density additives, and the high-density additives have two functions, one is to significantly improve the broadband sound insulation effect of the passenger car floor, and the other is to significantly improve the compressive rigidity of the passenger car floor. Preferably, the high-density additive is talc.
The substrate 101 softens and loses its compressive rigidity when heated, and if the substrate 101 and the reinforcing layer 102 are directly pressed and fused, the pores in the substrate 101 collapse and lose their original shape and properties. To avoid this collapse, it is necessary to apply support inside the pores. Preferably, the internal support for preventing the collapse of the small holes is high-pressure air 204 with the pressure of 0.1-1.0 MPa, as shown in FIG. 2. When the small hole 103 is supported by the high-pressure air 204, both ends of the substrate 101 are sealed by the sealing caps 201 and the sealing caps 202 with the air intake pipes, as shown in fig. 2.
Preferably, the sealing cover 201 includes a soft sealing gasket 301 and a hard end cover 302, as shown in fig. 3, the soft sealing gasket 301 can ensure air tightness, and the hard end cover 302 is used for pressing the sealing gasket 301.
Preferably, the sealing cover 202 includes a soft gasket 401, a hard end cover 402, and an air inlet pipe 403, as shown in fig. 4, the soft gasket 401 can ensure air tightness, the hard end cover 402 is used for pressing the gasket 401, and the air inlet pipe 403 is used for introducing the high-pressure air 204.
Drawings
FIG. 1 is a schematic view of a passenger car floor structure provided by the present invention, wherein 101 is a substrate, 102 is a reinforced layer using a thermoplastic prepreg as a raw material, and 103 is a small circular hole in the substrate.
FIG. 2 is a schematic view of a manufacturing method of a passenger car floor according to the present invention, wherein 101 is a base plate, 102 is a reinforcing layer, 201 is a sealing cover, 202 is a sealing cover with an air inlet pipe, 203 is a hot press device, and 204 is high pressure air.
Fig. 3 is a schematic view of the seal cap 201, 301 a soft gasket, and 302 a hard end cap.
Fig. 4 is a schematic view of the seal cap 202 with an intake pipe, 401 is a soft gasket, 402 is a hard end cap, 403 is an intake pipe, and 204 is high-pressure air.
Fig. 5 is a schematic view of a conventional hollow plastic plate, 501 is the hollow plastic plate, 502 is a small square hole in the hollow plastic plate, and 503 is burrs cut off from both sides of the substrate.
Detailed Description
Fig. 1 is a schematic view of a specific embodiment of the composite passenger car floor according to the present invention, the composite passenger car floor includes a substrate 101 and a reinforcement layer 102, the substrate 101 is a rectangular plastic plate with a plurality of small through holes 103, the reinforcement layer 102 is a thermoplastic prepreg, the reinforcement layer is closely attached to the upper and lower surfaces of the substrate, and the size of the reinforcement layer 102 is the same as that of the substrate 101.
The specific method of manufacturing a composite passenger vehicle floor as shown in FIG. 1 includes the following two steps.
In the first step, an extrusion process is used to manufacture a substrate 101, which is made of polypropylene and contains 25 wt% of talc powder. The length of the substrate was 1830 mm. The width of the substrate is 915 mm, and the cross section of the substrate is provided with 3 layers of circular through holes, as shown in figure 1, the diameter of each through hole is 2.5 mm. The thickness of the substrate was 15 mm.
And secondly, performing fusion operation on the substrate 101 and the enhancement layer 102 by using hot-pressing equipment. The material of the reinforced layer 102 is polypropylene and glass fiber. The substrate 101 is left with burrs 503. In the fusion operation, both ends of the substrate 101 are sealed with the sealing caps 201 and the sealing caps 202 with the intake pipes. Meanwhile, high-pressure air with a pressure of 0.8MPa is applied to the inside of the small hole through the air inlet pipe 403. The material of the gasket 301 and the gasket 401 is rubber, and the material of the end cap 302 and the end cap 402 is steel.

Claims (10)

1. The utility model provides a composite material passenger train floor, composite material passenger train floor includes base plate (101) and enhancement layer (102), base plate (101) are the rectangle plastic slab that has a lot of through holes (103), enhancement layer (102) are rectangular thermoplasticity preimpregnation material, enhancement layer (102) closely laminate on the upper and lower surface of base plate (101).
2. The composite passenger vehicle floor of claim 1, wherein the fiber directions of the reinforcement layer (102) include 1 to 3 of three angles of 0 degrees, ± 45 degrees and 90 degrees.
3. The composite passenger vehicle floor according to claim 1, wherein the base sheet (101) is made of polypropylene and other additives, and the reinforcement layer (102) is made of polypropylene resin and glass fiber.
4. The composite passenger vehicle floor according to claim 1, wherein the through-holes (103) are circular.
5. A method of manufacturing a composite passenger vehicle floor according to claim 1, the composite passenger vehicle floor comprising a substrate (101) and a reinforcement layer (102), the substrate (101) being a rectangular plastic sheet having a plurality of through holes (103), the reinforcement layer (102) being a rectangular thermoplastic prepreg, the reinforcement layer (102) being closely attached to the upper and lower surfaces of the substrate (101); the manufacturing method comprises the following steps: the base plate (101) comprises raw materials including a high-density additive with the weight ratio of 20-30% and the density of 2.0-5.0 g/cc, the base plate (101) is manufactured through an extrusion process, the reinforcing layer (102) is a rectangular flat plate with the size consistent with that of the base plate (101), the reinforcing layer (102) is manufactured through a thermoplastic prepreg manufacturing process, and the base plate (101) and the reinforcing layer (102) are compounded together through a hot pressing process to form a complete cuboid.
6. The method for manufacturing a composite material passenger vehicle floor according to claim 5, wherein the base plate (101) and the reinforcement layer (102) are combined by a hot pressing process, and the holes (103) have a support for preventing the holes from collapsing.
7. The method of manufacturing a composite passenger vehicle floor according to claim 5, wherein the base plate (101) is not trimmed (503) from both sides of the base plate (101).
8. The method of manufacturing a composite passenger vehicle floor as in claim 5 wherein the high density additive is talc.
9. The method of manufacturing a composite passenger vehicle floor according to claim 6, wherein the support is high pressure air (204) having a pressure of 0.1 to 1.0 MPa; when the small hole (103) is supported by high-pressure air (204), both ends of the substrate (101) are sealed by a seal cap (201) and a seal cap (202) with an air inlet pipe.
10. A method of manufacturing a composite passenger vehicle floor as claimed in claim 9 wherein the sealing cover (201) comprises a soft gasket (301) and a hard end cap (302); the sealing cover (202) comprises a soft sealing gasket (401), a hard end cover (402) and an air inlet pipe (403).
CN201911186832.6A 2019-11-28 2019-11-28 Composite material passenger car floor and manufacturing method thereof Pending CN111002658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911186832.6A CN111002658A (en) 2019-11-28 2019-11-28 Composite material passenger car floor and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911186832.6A CN111002658A (en) 2019-11-28 2019-11-28 Composite material passenger car floor and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN111002658A true CN111002658A (en) 2020-04-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932409A (en) * 1995-07-19 1997-02-04 Arai Pump Mfg Co Ltd Silencing bracket of air damper for automatically closable sliding door
US20040048036A1 (en) * 2001-05-24 2004-03-11 Japan Vilene Company, Ltd. Floor mat for automobile
KR20120108471A (en) * 2011-03-24 2012-10-05 현수건설 주식회사 Soundproof wall using fan type sound absorption assembly and construction method thereof
CN103950254A (en) * 2013-05-28 2014-07-30 太仓派欧技术咨询服务有限公司 Sound-absorption structured composite material and preparation method thereof
CN105667014A (en) * 2016-03-31 2016-06-15 广州金发碳纤维新材料发展有限公司 Passenger car floor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932409A (en) * 1995-07-19 1997-02-04 Arai Pump Mfg Co Ltd Silencing bracket of air damper for automatically closable sliding door
US20040048036A1 (en) * 2001-05-24 2004-03-11 Japan Vilene Company, Ltd. Floor mat for automobile
KR20120108471A (en) * 2011-03-24 2012-10-05 현수건설 주식회사 Soundproof wall using fan type sound absorption assembly and construction method thereof
CN103950254A (en) * 2013-05-28 2014-07-30 太仓派欧技术咨询服务有限公司 Sound-absorption structured composite material and preparation method thereof
CN105667014A (en) * 2016-03-31 2016-06-15 广州金发碳纤维新材料发展有限公司 Passenger car floor

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Application publication date: 20200414