WO2015198586A1 - 防音材、及び防音カバーの製造方法 - Google Patents
防音材、及び防音カバーの製造方法 Download PDFInfo
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- WO2015198586A1 WO2015198586A1 PCT/JP2015/003127 JP2015003127W WO2015198586A1 WO 2015198586 A1 WO2015198586 A1 WO 2015198586A1 JP 2015003127 W JP2015003127 W JP 2015003127W WO 2015198586 A1 WO2015198586 A1 WO 2015198586A1
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- material layer
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- soundproofing
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- soundproof
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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
- 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
- B32B5/024—Woven fabric
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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
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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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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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
- 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
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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
- 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
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0884—Insulating elements, e.g. for sound insulation for mounting around noise sources, e.g. air blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
- F02B77/13—Acoustic insulation
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
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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
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
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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
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/10—Fibres of continuous length
- B32B2305/18—Fabrics, textiles
- B32B2305/188—Woven fabrics
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
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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
- B32B2323/00—Polyalkenes
- B32B2323/10—Polypropylene
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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
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
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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
- B32B2377/00—Polyamides
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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
- B32B2605/00—Vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3223—Materials, e.g. special compositions or gases
Definitions
- the present invention relates to a soundproofing material and a method for manufacturing a soundproofing cover, and more particularly to a soundproofing material suitable for reducing noise generated around an automobile engine and a method for manufacturing a soundproofing cover using such a soundproofing material. .
- the applicant of the present invention includes a sound absorbing material disposed opposite to a sound source, a non-breathable soft sound insulating layer laminated on the sound absorbing material, and a soft cover that forms an air layer between the soft sound insulating layers.
- a soundproof cover is provided which is provided with a sealed air layer (see Patent Document 1).
- the soundproof cover proposed by the present applicant in Patent Document 1 has also undergone such a revision of the rules, but in order to meet the increasingly demanding reduction of vehicle exterior noise, soundproofing measures have previously been taken. For example, sound sources around the engine that have not been taken, such as oil pans, have to take soundproofing measures.
- the soundproofing material used for this is cooling water (LLC), battery liquid, window washer liquid, etc. used in the engine room. Durability is required, and it is necessary to prevent deterioration even if these liquids spill and adhere.
- the soundproofing material used for soundproofing the sound source around the engine installed in the engine room can withstand long-term use by enhancing its durability under harsh usage environments and suppressing its aging degradation. It is desirable that In addition, it is necessary to prevent the formability when forming into a predetermined shape in accordance with the shape of a sound source such as an oil pan.
- the present invention has been made in view of the above circumstances.
- the present invention is a soundproofing material that can be suitably used for soundproofing measures such as a sound source around an engine installed in an engine room of an automobile, and has a moldability.
- An object of the present invention is to provide a soundproofing material that can withstand long-term use while suppressing deterioration over time even in a harsh use environment, and a method for manufacturing a soundproof cover using such a soundproofing material.
- the soundproofing material according to the present invention includes a sound absorbing material layer disposed opposite to a sound source, and an exterior material layer laminated on the sound absorbing material layer, and the exterior material layer is a holding material made of a woven fabric; And a skin material made of a thermoplastic resin film, and the skin material is laminated on the sound-absorbing material layer so as to be located on the surface side.
- the soundproof cover manufacturing method according to the present invention is a method in which the above soundproofing material is hot press-molded into a predetermined shape.
- a soundproof material that can withstand long-term use while suppressing deterioration over time even under severe use environment without impairing moldability, and a soundproof cover using such a soundproof material A manufacturing method can be provided.
- FIG. 1 is a perspective view showing an outline of a soundproof cover formed by heat press-molding the soundproof material according to this embodiment
- FIG. 2 is an enlarged cross-sectional view of a main part of the soundproof material according to this embodiment. .
- the soundproofing material 1 in the present embodiment can be suitably used for soundproofing by laying it on a sound source around an engine installed in an engine room of an automobile.
- a sound source for example, as shown in FIG. Is heat-press-molded into a predetermined shape so as to cover the sound source, and attached to the laying site as a soundproof cover 10.
- the soundproofing material 1 includes a sound absorbing material layer 9 disposed facing the sound source, and an exterior material layer 8 laminated on the sound absorbing material layer.
- a holding material 3 made of woven fabric and a skin material 2 made of a thermoplastic resin film are laminated on the sound absorbing material layer 9 so that the skin material 2 is located on the surface side.
- the cross section of the soundproof material 1 is shown as what a sound source is located in the downward direction in the figure.
- thermoplastic resin film forming the skin material 2 examples include polyamide resin film, polyester resin film, polyolefin resin film, soft vinyl chloride resin film, polyvinyl alcohol resin film, polycarbonate resin film, and polystyrene resin.
- a resin film, a polyacrylonitrile-based resin film, an ethylene-vinyl acetate copolymer-based resin film, and the like can be used.
- a polyamide-based resin film excellent in toughness, impact resistance, and flexibility is preferably used.
- These thermoplastic resin films may be either a stretched film or an unstretched film, but are preferably unstretched films in view of moldability when the soundproofing material 1 is hot-press molded into a predetermined shape. .
- the unstretched film is preferably stretchable at an elongation of 5 to 500%, more preferably. Is 10 to 500%, more preferably 20 to 200%.
- the stretch rate of the unstretched film was 10N when the tensile test was performed in accordance with JIS K7161 and a strip-shaped test piece having a width of 25 mm and a length of 150 mm was pulled at a speed of 100 mm / min. It shall mean the elongation percentage of the film.
- Examples of the woven fabric forming the holding material 3 include polyolefin resin fibers such as polypropylene resin fibers, polyester resin fibers, polyamide resin fibers, soft vinyl chloride resins, polycarbonate resin fibers, and polyacrylonitrile resin fibers.
- a woven fabric formed by weaving thermoplastic resin fibers such as the above can be used, and among these, considering the moldability when the soundproofing material 1 is hot-press molded into a predetermined shape and the shape retention after molding, It is preferable to use a woven fabric formed by weaving any one or two or more of polypropylene resin fibers, polyester resin fibers, and polyamide resin fibers.
- These woven fabrics may be a woven fabric woven by plain weave, twill weave, etc. However, considering the formability when the soundproofing material 1 is hot-press molded into a predetermined shape, it is woven by 2-way tricot weaving. It is preferable that the woven fabric has stretchability.
- the exterior material layer 8 is formed by laminating the skin material 2 and the holding material 3 as described above. When laminating the skin material 2 and the retaining material 3, an adhesive or the like is interposed as necessary. You may let them. Further, since the exterior material layer 8 is laminated by adhering the exterior material layer 8 to the sound absorbing material layer 9, for example, a polyurethane elastomer film, a polyolefin blend is provided on the back surface side of the holding material 3 facing the sound absorbing material layer 9.
- the exterior material layer 8 having such a laminated structure was formed into a predetermined shape after the molding by melting the fibers of the woven fabric forming the holding material 3 when the soundproofing material 1 was subjected to hot press molding.
- the soundproofing material 1 in the present embodiment has flexibility and good moldability before hot press molding, but has improved rigidity and good shape retention after hot press molding.
- the exterior material layer 8 preferably has a Young's modulus before hot press molding of 0.005 to 0.5 GPa, more preferably.
- the Young's modulus after hot press molding is preferably 0.6 to 5.0 GPa, more preferably 1.0 to 3.0 GPa.
- the Young's modulus is a value measured according to JIS K7127.
- the sound absorbing material layer 9 on which the exterior material layer 8 is laminated includes the sound absorbing material 5, and it is preferable to use artificial mineral fibers such as glass wool and rock wool as the sound absorbing material 5. It is preferably 100 to 5000 g / m 2 .
- polyester fiber felt such as polyethylene terephthalate, nylon fiber felt, polyethylene fiber felt, polypropylene fiber felt, acrylic fiber felt, silica-alumina ceramic fiber felt, silica fiber felt, or cotton, wool, wood wool
- Felts such as resin felt obtained by processing waste fibers into a felt with a thermosetting resin, polyurethane foam, polyethylene foam, polypropylene foam, phenol foam, melamine foam, or nitrile butadiene rubber, chloroprene rubber, styrene rubber, silicone rubber, Porous materials such as open-celled foam that foams urethane rubber, ethylene, propylene, diene rubber, etc. in a continuous foam form, or foamed by crushing after foaming It may be used as the sound absorbing material 5.
- the sound-absorbing material layer 9 has a laminated structure of first sound-absorbing material 5a / soft sound-insulating material 6 / second sound-absorbing material 5b / lining material 7 in this order from the side where the exterior material layer 8 is laminated.
- thermoplastic resin film for the backing material 7.
- thermoplastic resin film similar to the skin material 2 can be used as the thermoplastic resin film.
- the soft sound insulating material 6 is laminated in order to attenuate the vibration of the sound that is deformed and transmitted through the second sound absorbing material 5b.
- the soft sound insulating material 6 is formed of a material that is flexible enough to be deformed by vibration of sound, but the Young's modulus is preferably 0.001 to 0.5 GPa, more preferably 0.02 to 0. .1 GPa.
- the Young's modulus of the soft sound insulating material 6 is preferably 1/5 or less, more preferably 1/10 or less, of the Young's modulus of the exterior material layer 8 after hot press molding.
- the soft sound insulating material 6 preferably has an air permeability of 10 cc / cm 2 ⁇ sec or less, more preferably 0.001 to 10 cc / cm 2 ⁇ sec, and particularly preferably 0 in order to improve the sound insulation. 0.01 to 1 cc / cm 2 ⁇ sec.
- the air permeability refers to a value measured according to JIS L1018.
- a soft sound insulating material 6 for example, a resin film can be used, but it is not particularly limited as long as it has a predetermined Young's modulus and air permeability.
- the soundproofing material 1 in the present embodiment includes the sound absorbing material layer disposed facing the sound source and the exterior material layer laminated on the sound absorbing material layer, and the exterior material layer is made of woven fabric. And a skin material made of a thermoplastic resin film, and is laminated on the sound-absorbing material layer so that the skin material is located on the surface side. Although the moldability is good, the rigidity is improved after hot press molding and the shape retention is good. And by laying such an exterior material layer on the sound-absorbing material layer so that the skin material is located on the surface side, durability against cooling water (LLC), battery fluid, window washer fluid, etc.
- LLC cooling water
- the heat resistance against heat from the engine, the oil resistance against fats and oils, and the durability against external environments such as wind and rain and stepping stones can be enhanced. Thereby, it is possible to provide the soundproofing material 1 that can withstand long-term use while suppressing deterioration over time even under harsh use environments.
- Example 1 A non-stretched polyamide resin / polyolefin resin co-extruded laminated film with a thickness of 55 ⁇ m using a plain weave of polypropylene resin fibers with a fabric weight of 200 g / m 2 (Ube Eximo Co., Ltd .: SIMTEX cloth) as a holding material.
- Ube Film Co., Ltd .: 35N-L is used as the skin material
- 30 ⁇ m thick polyurethane elastomer film (Seadam Co., Ltd .: DUS-235) is used as the adhesive layer
- An exterior material layer was formed by laminating with a laminated structure of polyamide resin / inner surface side polyolefin resin) / woven fabric / adhesive layer. The Young's modulus of the exterior material layer thus formed was measured and found to be 0.2 GPa.
- a polyethylene terephthalate short fiber felt with a basis weight of 500 g / m 2 (manufactured by Takayasu Co., Ltd .: S500-HSGYN) is used as the first sound-absorbing material, and a polyolefin resin / polyamide resin / polyolefin resin coextruded with a thickness of 70 ⁇ m.
- a soundproof material is produced by laminating the exterior material layer on the sound absorbing material layer so that the skin material is located on the surface side, and the soundproof material thus produced is subjected to hot press molding at 175 ° C. to obtain a test molded product.
- the Young's modulus was measured by cutting out the exterior material layer from the test molded product, it was 3.0 GPa.
- test-resistant After placing the test molded product in a gear oven (heat aging tester) and leaving it at a set temperature of 100 ° C. for 144 hours (1 week), the test molded product is significantly deformed and the appearance is wrinkled, wrinkled, peeled and cracked. The case where no harmful damage such as the above was found was marked with ⁇ , and the case where such deformation or damage was found was marked with x.
- the sound transmission loss of the test molded product was measured by a small reverberation box (diffuse sound field), anechoic chamber (free sound field), and sound intensity method. The result is shown in FIG. When the sound transmission loss at 5 kHz is 36 dB or more, ⁇ , less than 36 dB 33 dB or more, ⁇ , less than 33 dB 30 dB or more, and less than 30 dB x.
- FIG. 3A shows the measurement results for the example
- FIG. 3B shows the measurement results for the comparative example.
- Example 2 An exterior material layer is formed in the same manner as in Example 1 except that a woven fabric (made by Asahi Kasei Intertextiles Co., Ltd .: KARI140) having a basis weight of 140 g / m 2 in which polyester resin fibers are woven in 2 ways is used. did. The Young's modulus of this exterior material layer was measured and found to be 0.15 GPa. Then, a soundproof material is produced by laminating an exterior material layer on the sound absorbing material layer formed in the same manner as in Example 1, and the soundproof material thus produced is hot-press molded at 175 ° C. to obtain a test molded product. Obtained. It was 2.0 GPa when the Young's modulus was measured by cutting out the exterior material layer from the test molded product. Table 1 shows the results of evaluating the test molded products in the same manner as in Example 1.
- Example 3 An exterior material layer is formed in the same manner as in Example 1 except that a woven fabric having a basis weight of 40 g / m 2 (AG1529, manufactured by Asahi Kasei Intertextiles Co., Ltd.) obtained by weaving polyamide resin fibers in a 2-way tricot is used. did. The Young's modulus of this exterior material layer was measured and found to be 0.1 GPa. Then, a soundproof material is produced by laminating an exterior material layer on the sound absorbing material layer formed in the same manner as in Example 1, and the soundproof material thus produced is hot-press molded at 175 ° C. to obtain a test molded product. Obtained. It was 1.5 GPa when the Young's modulus was measured by cutting out the exterior material layer from the test molded product. Table 1 shows the results of evaluating the test molded products in the same manner as in Example 1.
- Example 4 An exterior material layer is formed in the same manner as in Example 1 except that a woven fabric (manufactured by Asahi Kasei Intertextiles Co., Ltd .: 1430) having a basis weight of 70 g / m 2 in which polyester resin fibers are woven in 2 ways is used. did. The Young's modulus of this exterior material layer was measured and found to be 0.1 GPa. Then, a soundproof material is produced by laminating an exterior material layer on the sound absorbing material layer formed in the same manner as in Example 1, and the soundproof material thus produced is hot-press molded at 175 ° C. to obtain a test molded product. Obtained. It was 1.0 GPa when the Young's modulus was measured by cutting out the exterior material layer from the test molded product. Table 1 shows the results of evaluating the test molded products in the same manner as in Example 1.
- Example 5 Using unstretched polyamide-based resin / polyolefin-based resin co-extruded laminated film (Ube Film Co., Ltd .: 35N-L) as the backing material, the first sound absorbing material / co-extruded laminated film (polyolefin-based resin / polyamide-based resin / Soundproofing material in the same manner as in Example 1 except that a sound absorbing material layer was formed by laminating with a laminated structure of (polyolefin resin) / second sound absorbing material / non-stretched coextruded laminated film (polyolefin resin / polyamide resin).
- the soundproof material thus produced was hot press molded at 175 ° C. to obtain a test molded product. It was 3.00 GPa when the Young's modulus was measured by cutting out the exterior material layer from the test molded product. Table 1 shows the results of evaluating the test molded products in the same manner as in Example 1.
- Example 1 An exterior material layer was formed in the same manner as in Example 1, except that a water- and oil-repellent treated non-woven fabric having a basis weight of 125 g / m 2 (Maeda Kosen Co., Ltd .: 125H) was used as the holding material. The Young's modulus of this exterior material layer was measured and found to be 0.25 GPa. Then, a soundproof material is produced by laminating an exterior material layer on the sound absorbing material layer formed in the same manner as in Example 1, and the soundproof material thus produced is hot-press molded at 175 ° C. to obtain a test molded product. Obtained. When the Young's modulus was measured by cutting out the exterior material layer from the test molded product, it was 0.5 GPa. Table 2 shows the results of evaluating the test molded products in the same manner as in Example 1.
- Example 2 A 30 ⁇ m-thick polyurethane elastomer film (Seadam Co., Ltd .: DU-235) is used as an adhesive layer on the back surface of a water- and oil-repellent non-woven fabric with a basis weight of 125 g / m 2 (Maeda Kosen Co., Ltd .: 125H).
- the exterior material layer was formed by laminating. The Young's modulus of this exterior material layer was measured and found to be 0.25 GPa. Then, a soundproof material is produced by laminating an exterior material layer on the sound absorbing material layer formed in the same manner as in Example 1, and the soundproof material thus produced is hot-press molded at 175 ° C.
- Example 2 shows the results of evaluating the test molded products in the same manner as in Example 1.
- Example 2 shows the results of evaluating the test molded products in the same manner as in Example 1.
- Example 4 The soundproofing material prepared in Example 1 was evaluated for water resistance, heat resistance, icing peelability, smoothness, moldability, and sound insulation performance without performing hot press molding. The results are shown in Table 2.
- the sound source is installed around a sound source around an engine such as an oil pan installed in an engine room of an automobile and applied to the soundproofing measure is shown, but the present invention is not limited to this. It can be applied to soundproofing measures in various fields.
Abstract
Description
なお、図1は、本実施形態に係る防音材を熱プレス成形してなる防音カバーの概略を示す斜視図であり、図2は、本実施形態に係る防音材の要部拡大断面図である。
なお、図2では、図中下方に音源が位置するものとして防音材1の断面を示している。
このように、本実施形態における防音材1は、熱プレス成形前には柔軟性があり成形性が良好でありながらも、熱プレス成形後には剛性が向上して形状保持が良好となる。防音材1の成形性と、成形後の形状保持を良好にするには、外装材層8は、熱プレス成形前のヤング率が、0.005~0.5GPaであるのが好ましく、より好ましくは0.05~0.3GPaであり、熱プレス成形後のヤング率が、0.6~5.0GPaであるのが好ましく、より好ましくは1.0~3.0GPaである。
なお、ヤング率は、JIS K7127に準拠して測定した値をいうものとする。
なお、通気率はJIS L1018に準拠して測定した値をいうものとする。
そして、このような外装材層を表皮材が表面側に位置するように吸音材層に積層することで、エンジンルーム内で扱われる冷却水(LLC)、バッテリー液、ウインドウォッシャー液などに対する耐久性、エンジンからの熱に対する耐熱性、油脂類に対する耐油性、風雨や飛び石などの外部環境に対する耐久性を高めることができる。これにより、過酷な使用環境下にあっても経年劣化を抑制しつつ、長期にわたる使用に耐え得る防音材1を提供することができる。
ポリプロピレン系樹脂繊維を平織りした目付量200g/m2の織布(宇部エクシモ(株)製:SIMTEXクロス)を保持材とし、厚さ55μmの無延伸ポリアミド系樹脂/ポリオレフィン系樹脂共押し出し積層フィルム(宇部フィルム(株)製:35N-L)を表皮材とし、厚さ30μmのポリウレタンエラストマーフィルム(シーダム(株)製:DUS-235)を接着層として、これらを無延伸共押し出し積層フィルム(表面側ポリアミド系樹脂/内面側ポリオレフィン系樹脂)/織布/接着層の積層構成で積層して外装材層を形成した。このようにして形成された外装材層のヤング率を測定したところ、0.2GPaであった。
一方、目付量500g/m2のポリエチレンテレフタレート短繊維フェルト(高安(株)製:S500-HSGYN)を第一吸音材とし、厚さ70μmのポリオレフィン系樹脂/ポリアミド系樹脂/ポリオレフィン系樹脂共押し出し積層フィルム(宇部フィルム(株)製:35N-LL)を軟質遮音層とし、目付量500g/m2のポリエチレンテレフタレート短繊維フェルト(高安(株)製:S500-HSGYN)を第二吸音材とし、目付量125g/m2の不織布(前田工繊(株)製:125H/PUR)を裏地材として、これらを第一吸音材/共押し出し積層フィルム(ポリオレフィン系樹脂/ポリアミド系樹脂/ポリオレフィン系樹脂)/第二吸音材/不織布の積層構成で積層して吸音材層を形成した。
そして、表皮材が表面側に位置するように外装材層を吸音材層に積層して防音材を作製し、このようにして作製された防音材を175℃で熱プレス成形して試験成形品を得た。試験成形品から外装材層を切り出してヤング率を測定したところ、3.0GPaであった。
試験成形品の表面に3Nの衝撃が加わるように、ポンプ圧7MPaでノズルから水を噴射したときに、表皮材から内部への水の浸透の有無で評価し、水の浸透が認められなかったものについては○、水の浸透が認められたものは×とした。
試験成形品をギヤーオーブン(熱老化性試験機)に入れて、100℃の設定温度で144時間(1週間)放置した後に、試験成形品に著しい変形や、外観にヤブレ、シワ、剥離、亀裂等の有害な損傷が認められなかったものについては○、そのような変形、損傷が認められたものは×とした。
試験成形品の表面に円筒状の樹脂カップを載置して、内部に水を注入し、凍結させた後、樹脂カップを取り除いて、試験成形品の表面に凍結して固着した氷柱を形成した。試験成形品の表面から氷柱を引き剥がして、試験成形品の表面にヤブレ、剥離等の有害な損傷が認められなかったものについては○、そのような損傷が認められたものは×とした。
試験成形品のなるべく平らな部分について、JIS K7125(1999)の摩擦試験を実施し、動摩擦係数が0.3以下のものを○、動摩擦係数が0.3を超えるものを×とした。
試験成形品の表面にヤブレ、シワ、剥離、亀裂等の有害な損傷が認められず、成形に用いた金型内径寸法と試験成形品の外形寸法の差が2.5mm以内であるものを○、同寸法差が2.5mmを超えるものを×とした。
小型残響箱(拡散音場)・無響室(自由音場)・音響インテンシティー法により、試験成形品の音響透過損失を測定した。その結果を図3に示す。5kHzにおける音響透過損失が36dB以上のものについては◎、36dB未満33dB以上のものを○、33dB未満30dB以上のものを△、30dB未満のものを×とした。
なお、図3(a)は、実施例についての測定結果であり、図3(b)は、比較例についての測定結果である。
ポリエステル系樹脂繊維を2wayトリコット織りした目付量140g/m2の織布(旭化成インターテキスタイルズ(株)製:KARI140)を保持材とした以外は、実施例1と同様にして外装材層を形成した。この外装材層のヤング率を測定したところ、0.15GPaであった。
そして、実施例1と同様にして形成した吸音材層に外装材層を積層して防音材を作製し、このようにして作製された防音材を175℃で熱プレス成形して試験成形品を得た。試験成形品から外装材層を切り出してヤング率を測定したところ、2.0GPaであった。
また、試験成形品につて実施例1と同様に評価した結果を表1に示す。
ポリアミド系樹脂繊維を2wayトリコット織りした目付量40g/m2の織布(旭化成インターテキスタイルズ(株)製:AG1529)を保持材とした以外は、実施例1と同様にして外装材層を形成した。この外装材層のヤング率を測定したところ、0.1GPaであった。
そして、実施例1と同様にして形成した吸音材層に外装材層を積層して防音材を作製し、このようにして作製された防音材を175℃で熱プレス成形して試験成形品を得た。試験成形品から外装材層を切り出してヤング率を測定したところ、1.5GPaであった。
また、試験成形品につて実施例1と同様に評価した結果を表1に示す。
ポリエステル系樹脂繊維を2wayトリコット織りした目付量70g/m2の織布(旭化成インターテキスタイルズ(株)製:1430)を保持材とした以外は、実施例1と同様にして外装材層を形成した。この外装材層のヤング率を測定したところ、0.1GPaであった。
そして、実施例1と同様にして形成した吸音材層に外装材層を積層して防音材を作製し、このようにして作製された防音材を175℃で熱プレス成形して試験成形品を得た。試験成形品から外装材層を切り出してヤング率を測定したところ、1.0GPaであった。
また、試験成形品につて実施例1と同様に評価した結果を表1に示す。
裏地材として無延伸ポリアミド系樹脂/ポリオレフィン系樹脂共押し出し積層フィルム(宇部フィルム(株)製:35N-L)を用いて、第一吸音材/共押し出し積層フィルム(ポリオレフィン系樹脂/ポリアミド系樹脂/ポリオレフィン系樹脂)/第二吸音材/無延伸共押し出し積層フィルム(ポリオレフィン系樹脂/ポリアミド系樹脂)の積層構成で積層して吸音材層を形成した以外は、実施例1と同様にして防音材を作製し、このようにして作製された防音材を175℃で熱プレス成形して試験成形品を得た。試験成形品から外装材層を切り出してヤング率を測定したところ、3.00GPaであった。
また、試験成形品につて実施例1と同様に評価した結果を表1に示す。
目付量125g/m2の撥水撥油処理不織布(前田工繊(株)製:125H)を保持材とした以外は、実施例1と同様にして外装材層を形成した。この外装材層のヤング率を測定したところ、0.25GPaであった。
そして、実施例1と同様にして形成した吸音材層に外装材層を積層して防音材を作製し、このようにして作製された防音材を175℃で熱プレス成形して試験成形品を得た。試験成形品から外装材層を切り出してヤング率を測定したところ、0.5GPaであった。
また、試験成形品につて実施例1と同様に評価した結果を表2に示す。
目付量125g/m2の撥水撥油処理不織布(前田工繊(株)製:125H)の裏面に、厚さ30μmのポリウレタンエラストマーフィルム(シーダム(株)製:DUS-235)を接着層として積層して外装材層を形成した。この外装材層のヤング率を測定したところ、0.25GPaであった。
そして、実施例1と同様にして形成した吸音材層に外装材層を積層して防音材を作製し、このようにして作製された防音材を175℃で熱プレス成形して試験成形品を得た。試験成形品から外装材層を切り出してヤング率を測定したところ、0.5GPaであった。
また、試験成形品につて実施例1と同様に評価した結果を表2に示す。
厚さ55μmの無延伸ポリアミド系樹脂/ポリオレフィン系樹脂共押し出し積層フィルム(宇部フィルム(株)製:35N-L)の裏面に、厚さ30μmのポリウレタンエラストマーフィルム(シーダム(株)製:DUS-235)を接着層として積層して外装材層を形成した。この外装材層のヤング率を測定したところ、0.1GPaであった。
そして、実施例1と同様にして形成した吸音材層に外装材層を積層して防音材を作製し、このようにして作製された防音材を175℃で熱プレス成形して試験成形品を得た。試験成形品から外装材層を切り出してヤング率を測定したところ、0.25GPaであった。
また、試験成形品につて実施例1と同様に評価した結果を表2に示す。
実施例1で作成された防音材について、熱プレス成形せずに、耐水性、耐熱性、着氷剥離性、平滑性、成形性、遮音性能を評価した。その結果を表2示す。
2 表皮材
3 保持材
4 接着層
5(5a,5b) 吸音材
6 軟質遮音材
7 裏地材
8 外装材層
9 吸音材層
Claims (6)
- 音源に対向して配設される吸音材層と、前記吸音材層に積層される外装材層とを備え、
前記外装材層が、織布からなる保持材と、熱可塑性樹脂フィルムからなる表皮材とを含み、前記表皮材が表面側に位置するように前記吸音材層に積層されていることを特徴とする防音材。 - 前記表皮材が、伸び率5~500%で延伸可能な無延伸ポリアミド系樹脂フィルムからなる請求項1に記載の防音材。
- 前記保持材が、ポリプロピレン系樹脂繊維、ポリエステル系樹脂繊維、ポリアミド系樹脂繊維のいずれか一種又は二種以上を織製してなる請求項1又は2に記載の防音材。
- 前記吸音材層の前記音源に対向する側に、熱可塑性樹脂フィルムからなる裏地材を積層した請求項1~3のいずれか一項に記載の防音材。
- 請求項1~4のいずれか一項に記載の防音材を所定形状に熱プレス成形することを特徴とする防音カバーの製造方法。
- 熱プレス成形前の前記外装材層のヤング率が、0.005~0.5GPaであり、熱プレス成形後の前記外装材層のヤング率が、0.6~5.0GPaである請求項5に記載の防音カバーの製造方法。
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PL2364881T3 (pl) * | 2010-03-09 | 2015-10-30 | Autoneum Man Ag | Motoryzacyjny element wykończeniowy do izolacyjności od dźwięku i pochłaniania dźwięku |
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JP4828658B1 (ja) * | 2011-03-14 | 2011-11-30 | 株式会社タケヒロ | 車両用防音材 |
FR2980902B1 (fr) * | 2011-10-04 | 2013-09-13 | Aircelle Sa | Panneau d'attenuation acoustique structural |
BR112015000215A2 (pt) * | 2012-07-06 | 2019-10-08 | C&D Zodiac Inc | painel de interior de aeronaves com materiais acústicos |
JP6165466B2 (ja) * | 2013-02-27 | 2017-07-19 | 株式会社神戸製鋼所 | 防音構造 |
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2015
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- 2015-06-23 CN CN201580033726.8A patent/CN106663419A/zh active Pending
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JP2000158575A (ja) * | 1998-11-30 | 2000-06-13 | Kanegafuchi Chem Ind Co Ltd | 自動車天井材用発泡積層シート及びそれを用いた自動車天井材 |
JP2003216158A (ja) * | 2002-01-18 | 2003-07-30 | Kasai Kogyo Co Ltd | 車両用防音材 |
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Also Published As
Publication number | Publication date |
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KR101983890B1 (ko) | 2019-09-03 |
JP6484408B2 (ja) | 2019-03-13 |
CN106663419A (zh) | 2017-05-10 |
EP3163567A1 (en) | 2017-05-03 |
JP2016009071A (ja) | 2016-01-18 |
KR20170012358A (ko) | 2017-02-02 |
US10421249B2 (en) | 2019-09-24 |
US20170129204A1 (en) | 2017-05-11 |
EP3163567A4 (en) | 2018-02-14 |
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