CN109823283B - Method for manufacturing sound insulation pad under automobile rear seat - Google Patents
Method for manufacturing sound insulation pad under automobile rear seat Download PDFInfo
- Publication number
- CN109823283B CN109823283B CN201711185079.XA CN201711185079A CN109823283B CN 109823283 B CN109823283 B CN 109823283B CN 201711185079 A CN201711185079 A CN 201711185079A CN 109823283 B CN109823283 B CN 109823283B
- Authority
- CN
- China
- Prior art keywords
- rear seat
- sound insulation
- blank
- manufacturing
- felt
- 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
Abstract
The invention relates to a method for manufacturing a lower sound-insulating pad of an automobile rear seat, which comprises the manufacturing of a semi-finished felt blank and the molding manufacturing of parts, wherein the lower sound-insulating pad of the automobile rear seat consists of the felt blank (cloth flower plus molten fiber) and a surface decorative fabric (PET plus back glue). Compared with the prior art, the sound insulation pad under the automobile rear seat, which is light, beautiful, adjustable in thickness and surface density, moderate in strength, low in cost and excellent in acoustic performance, is manufactured, the defects that the existing sound insulation layer on the surface of the sound insulation pad under the rear seat is high in density and not attractive are overcome, the excellent sound absorption performance of the felt blank material is fully exerted, and the acoustic performance of parts can meet requirements.
Description
Technical Field
The invention relates to an automobile sound insulation pad, in particular to a manufacturing method of a sound insulation pad under an automobile rear seat.
Background
Automotive interior parts mainly play a role in protection, sound insulation, sound absorption and decoration, and the interior parts are required to have certain strength, good acoustic performance (sound insulation and sound absorption) and good visual effect. Automotive interiors are developing towards light weight, beauty, comfort, energy conservation, environmental protection and individuation, and people have higher and higher requirements on the weight, strength, acoustics and structure of the automotive interiors.
The lower sound insulation pad of the automobile rear seat is an automobile interior part which is arranged below the automobile rear seat and used for filling a gap between a metal plate and the rear seat and playing roles of sound insulation, sound absorption and decoration. Give sound insulation under current back seat pad mainly is two-layer structure, and the upper strata is the material that density is high (give sound insulation and decorative effect), for example: EPDM; the lower layer is an elastic layer (sound insulation, filling function), such as: PET felt. But has the following disadvantages: heavy weight, high price, not beautiful enough, difficult to meet the acoustic performance requirements.
Chinese patent CN102336232A discloses a method for manufacturing a resin felt part for the outer side of a front wall of an automobile, which comprises the steps of manufacturing a semi-finished product felt blank and forming the part, mixing cloth blossoming, ED fibers and phenolic resin, manufacturing a fiber net by an air-flow net forming machine, obtaining the felt blank by high-temperature treatment, laying a glass fiber and a non-woven fabric on the surface of the semi-finished product felt blank, putting the semi-finished product felt blank into a forming die for the outer side of the front wall of the automobile, carrying out two-time pressing treatment on the semi-finished product felt blank, then carrying out cooling treatment, and finally trimming to obtain the formed resin felt part for the outer side of the front wall of the automobile. The main material of the part described in the previous patent is a resin felt, phenolic resin is mixed in the felt blank, and during the forming process, the phenolic resin is heated and cured to realize the forming of the part. The method is essentially different from the materials, process principles and forming processes of parts described in the patent.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for manufacturing a lower sound-insulating pad of a rear seat of an automobile.
The purpose of the invention can be realized by the following technical scheme:
a manufacturing method of a lower sound insulation pad of an automobile rear seat comprises the following steps:
a. manufacture of semi-finished felt
(a-1) air-laying: respectively roughening the cloth and the molten fibers, fully mixing the cloth and the molten fibers according to a proportion, and forming a rough blank through air-laying;
(a-2) heat setting: conveying the rough blank into a drying room through a conveying belt for heating and shaping, adjusting the thickness of the formed felt blank through the gap of a net chain, and adjusting the cutting size through the width of the net chain to obtain a semi-finished felt blank;
b. part forming and manufacturing
(b-1) cutting the surface decorative fabric according to a required shape;
(b-2) coating back glue on the back of the cut surface decorative fabric;
(b-3) heating the semi-finished felt blank in an oven, then placing the semi-finished felt blank in a lower die of a forming and punching die, facing the back of the surface decorative fabric with the gum downwards, attaching the surface decorative fabric to the surface of the felt blank, closing the die, punching, maintaining the pressure, and opening the die to take out a formed piece;
and (b-4) binding the barbed fasteners on corresponding positions on the formed part by using the tacking nails to manufacture the lower sound insulation pad of the automobile rear seat.
The titer of the molten fiber PET fiber is 3-6 dtex.
The cloth flower and the molten fiber are mixed according to the weight ratio of 60: 25-80: 30.
The width of the rough blank is 20-2400 mm, the thickness of the rough blank is 10-30 mm, and the gram weight of the rough blank is 400-2000 g/m2。
The temperature of the heating and setting in the step (a-2) is 140-180 ℃, and the thickness of the formed felt blank is 20-30 mm.
The back glue is hot-melt glue, the bonding effect is good when the back glue is melted at high temperature, and no small-molecule volatile matter exists under the condition of medium and low temperature, so that the part can meet the VOC requirement of automotive interior parts, and the health and environmental protection are really realized.
The surface decorative fabric is made of PET raised or needled fabric.
In the step (b-3), a drawer type oven is adopted, and the temperature is controlled to be 150-. The pressure maintaining time is 2-4min, and the pressure is 5-20 Mpa. The heat is freely dissipated during pressure maintaining, and the press is automatically opened after the pressure maintaining and timing are in place, so that the die opening and part taking are realized.
By adopting an air-laid process and taking cloth blossoms and molten fibers as raw materials, the felt blank with light weight, adjustable thickness and dough density, moderate strength, low cost and excellent acoustic performance is manufactured, and the light weight of parts is realized on the premise that the acoustic performance meets the requirements. The felt blank forming process adopts an air-laid process to mainly ensure that the gaps of the felt blank are uniform, and good porosity is ensured by adjusting the thickness and the gram weight, so that the acoustic effect is good only if the gaps are uniform.
The lower floor is felt base, the upper strata is the two-layer structure of surface decoration surface fabric, made light and beautifully, thickness and surface density are adjustable, intensity is moderate, with low costs, acoustic properties is good under the car back seat acoustic pad, avoided because the acoustic pad surface acoustic layer density under the current back seat is big, the shortcoming of unaesthetic, brought into full play felt base material excellent sound absorption performance to guarantee that part acoustic properties satisfies the requirement, this patent the proportion of melting fibre and cloth blossoming must be in the required scope, too low felt base formability is poor, too high felt base makes the part, too hard, can lead to the sound absorption performance to descend. The width is designed according to the width of the part, the thickness and the gram weight are mutually adjusted, and the gap is adjusted through the matching of the thickness and the gram weight, so that the good acoustic performance of the part is ensured.
Compared with the prior art, the invention has the following advantages:
(1) light weight and beautiful appearance: the part weight is 1.5kg, the requirement of light weight is met, the style and color of the surface decorative fabric can be adjusted, and the requirements of attractive appearance and personalized design are met;
(2) the acoustic performance is excellent, and standing wave tube and reverberation room test results show that the acoustic performance is good under low, medium and high frequency conditions, and can meet and exceed the requirements of automobile host factories on the acoustic performance of parts.
(3) The structural design of the part is flexible, the structure of the part can be flexibly designed by changing the thickness of the felt blank and the structure of the forming punching die, and other performances are not influenced;
(4) the surface decorative fabric is attractive, anti-fouling and wear-resistant.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The utility model provides a sound insulation pad under car rear seat and preparation method thereof, includes that semi-manufactured goods felt base makes and part shaping makes, and this kind of sound insulation pad under car rear seat comprises felt base (cloth is opened flower + melting fiber) and surface decorative fabric (PET + gum), and the concrete step is as follows:
a. manufacture of semi-finished felt
(1) Air laying: the method comprises the steps of respectively roughing cloth, fully mixing the cloth and the molten fibers according to a certain mass ratio, and forming a rough blank with a certain width, thickness and gram weight through air-laying.
(2) Heating and shaping: conveying the rough blank prepared by the air-flow-removing net-forming process into a drying room through a conveying belt for heating and shaping, adjusting the thickness of the formed felt blank through the gap of a net chain, and finally adjusting the cutting size through the breadth to obtain the required felt blank for later use;
b. parts forming and manufacturing
(1) Cutting the surface decorative fabric into required shapes for later use;
(2) coating back glue (hot-melt glue) on the back of the cut surface decorative fabric for later use;
(3) placing the semi-finished felt blank in a drawer type oven at the temperature of 150-.
(4) And binding the barbed fasteners at corresponding positions on the parts by using the stacking nails, thus finishing the manufacture of the lower sound insulation pad of the rear seat of the automobile.
The standing wave tube test results of the acoustic pad under the rear seat of the automobile manufactured by the above embodiment are shown in the following table:
example 2
A manufacturing method of a lower sound insulation pad of an automobile rear seat comprises the following steps:
a. manufacture of semi-finished felt
(a-1) air-laying: respectively roughening the cloth and the molten fibers, fully mixing the cloth and the molten fibers according to a proportion, forming a rough blank by air-laying, wherein the adopted molten fibers are PET fibers with the fineness of 3dtex, and the cloth and the molten fibers are mixed according to the weight ratio of 60:25 to form the rough blank with the width of 20mm, the thickness of 10mm and the gram weight of 400g/m2，；
(a-2) heat setting: conveying the rough blank into a drying room through a conveying belt for heating and shaping, wherein the heating and shaping temperature is 140 ℃, the thickness of the formed felt blank is adjusted to be 20mm through the gap of a net chain, and the cutting size is adjusted through the width of the felt blank to obtain a semi-finished felt blank;
b. part forming and manufacturing
(b-1) cutting the PET raised fabric serving as a surface decoration fabric according to a required shape;
(b-2) coating hot-melt glue on the back of the cut surface decorative fabric;
(b-3) heating the semi-finished felt blank in a drawer type oven at the temperature of 150 ℃ for 5min, placing the semi-finished felt blank in a lower die of a forming and punching die, enabling the back surface of the surface decorative fabric with the back adhesive to face downwards, attaching the semi-finished felt blank to the surface of the felt blank, closing the die, punching and maintaining the pressure for 2min, wherein the pressure is 20Mpa, the heat is freely dissipated during maintaining the pressure, after the pressure maintaining timing is finished, a press is automatically opened, and the die is opened to take a part;
and (b-4) binding the barbed fasteners on corresponding positions on the formed part by using the tacking nails to manufacture the lower sound insulation pad of the automobile rear seat.
Example 3
A manufacturing method of a lower sound insulation pad of an automobile rear seat comprises the following steps:
a. manufacture of semi-finished felt
(a-1) air-laying: respectively roughening the cloth and the molten fibers, fully mixing the cloth and the molten fibers according to a proportion, forming a rough blank by air-laying, wherein the adopted molten fibers are PET fibers with the fineness of 6dtex, and the cloth and the molten fibers are mixed according to a weight ratio of 80:30 to form the rough blank with the width of 1000mm, the thickness of 20mm and the gram weight of 1000g/m2，；
(a-2) heat setting: conveying the rough blank into a drying room through a conveying belt for heating and shaping, wherein the heating and shaping temperature is 150 ℃, the thickness of the formed felt blank is 25mm through adjusting the gap of a net chain, and the cutting size is adjusted through adjusting the width of the felt blank to obtain a semi-finished felt blank;
b. part forming and manufacturing
(b-1) cutting the PET needled fabric serving as a surface decorative fabric according to a required shape;
(b-2) coating hot-melt glue on the back of the cut surface decorative fabric;
(b-3) heating the semi-finished felt blank in a drawer type oven at the temperature of 180 ℃ for 3min, placing the semi-finished felt blank in a lower die of a forming and punching die, enabling the back surface of the surface decorative fabric with the back adhesive to face downwards, attaching the semi-finished felt blank to the surface of the felt blank, closing the die, punching and maintaining the pressure for 3min, wherein the pressure is 10Mpa, the heat is freely dissipated during maintaining the pressure, after the pressure maintaining timing is finished, a press is automatically opened, and the die is opened to take a part;
and (b-4) binding the barbed fasteners on corresponding positions on the formed part by using the tacking nails to manufacture the lower sound insulation pad of the automobile rear seat.
Example 4
A manufacturing method of a lower sound insulation pad of an automobile rear seat comprises the following steps:
a. manufacture of semi-finished felt
(a-1) air-laying: respectively roughening the cloth and the molten fibers, fully mixing the cloth and the molten fibers according to a proportion, forming a rough blank by air-laying, wherein the adopted molten fibers are PET fibers with the fineness of 6dtex, and the cloth and the molten fibers are mixed according to a weight ratio of 70:30 to form the rough blank with the width of 2400mm, the thickness of 30mm and the gram weight of 2000g/m2，；
(a-2) heat setting: conveying the rough blank into a drying room through a conveying belt for heating and shaping, wherein the heating and shaping temperature is 180 ℃, the thickness of the formed felt blank is 30mm through adjusting the gap of a net chain, and the cutting size is adjusted through adjusting the width of the felt blank to obtain a semi-finished felt blank;
b. part forming and manufacturing
(b-1) cutting the PET needled fabric serving as a surface decorative fabric according to a required shape;
(b-2) coating hot-melt glue on the back of the cut surface decorative fabric;
(b-3) heating the semi-finished felt blank in a drawer type oven at the temperature of 200 ℃ for 2min, placing the semi-finished felt blank in a lower die of a forming and punching die, enabling the back surface of the surface decorative fabric with the back adhesive to face downwards, attaching the semi-finished felt blank to the surface of the felt blank, closing the die, punching and maintaining the pressure for 4min, wherein the pressure is 20Mpa, the heat is freely dissipated during maintaining the pressure, after the pressure maintaining timing is finished, a press is automatically opened, and the die is opened to take a part;
and (b-4) binding the barbed fasteners on corresponding positions on the formed part by using the tacking nails to manufacture the lower sound insulation pad of the automobile rear seat.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. A method for manufacturing a sound insulation pad under a rear seat of an automobile is characterized by comprising the following steps:
a. manufacture of semi-finished felt
(a-1) air-laying: respectively roughening cloth and molten fibers, fully mixing the cloth and the molten fibers according to a weight ratio of 60: 25-80: 30, and forming a rough blank through air-laid, wherein the molten fibers are PET fibers with a fineness of 3-6 dtex, the width of the rough blank is 20-2400 mm, the thickness of the rough blank is 10-30 mm, and the gram weight of the rough blank is 400-2000 g/m2；
(a-2) heat setting: conveying the rough blank into a drying room through a conveying belt for heating and shaping, adjusting the thickness of the formed felt blank through a net chain gap, and adjusting the cutting size through the breadth to obtain a semi-finished felt blank;
b. part forming and manufacturing
(b-1) cutting the surface decorative fabric according to a required shape;
(b-2) coating back glue on the back of the cut surface decorative fabric;
(b-3) heating the semi-finished felt blank in an oven, then placing the semi-finished felt blank in a lower die of a forming and punching die, facing the back of the surface decorative fabric with the gum downwards, sticking the surface decorative fabric to the surface of the felt blank, closing the die, punching, maintaining the pressure, opening the die and taking out a formed piece;
and (b-4) binding the barbed fasteners on corresponding positions on the formed part by using the tacking nails to manufacture the lower sound insulation pad of the automobile rear seat.
2. The method for manufacturing the sound insulation pad under the rear seat of the automobile as claimed in claim 1, wherein the heat setting temperature in the step (a-2) is 140 to 180 ℃, and the thickness of the formed felt is 20 to 30 mm.
3. The method for manufacturing the sound insulation pad under the rear seat of the automobile as claimed in claim 1, wherein the back adhesive is hot melt type glue.
4. The method for manufacturing the sound insulation pad under the rear seat of the automobile as claimed in claim 1, wherein the surface decoration fabric is made of PET raised or needle punched fabric.
5. The method as claimed in claim 1, wherein the step (b-3) is performed by a drawer oven, and the temperature is controlled at 150 ℃ and 200 ℃ for 2-5 min.
6. The method for manufacturing the sound insulation pad under the rear seat of the automobile according to claim 1, wherein in the step (b-3), the pressure maintaining time is 2-4min, the pressure is 5-20 Mpa, the heat is freely dissipated during the pressure maintaining, after the pressure maintaining time is over, the press is automatically opened, and the part is taken out after the mold is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711185079.XA CN109823283B (en) | 2017-11-23 | 2017-11-23 | Method for manufacturing sound insulation pad under automobile rear seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711185079.XA CN109823283B (en) | 2017-11-23 | 2017-11-23 | Method for manufacturing sound insulation pad under automobile rear seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109823283A CN109823283A (en) | 2019-05-31 |
| CN109823283B true CN109823283B (en) | 2022-03-04 |
Family
ID=66859138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711185079.XA Active CN109823283B (en) | 2017-11-23 | 2017-11-23 | Method for manufacturing sound insulation pad under automobile rear seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109823283B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202413662U (en) * | 2011-12-28 | 2012-09-05 | 上海新安汽车隔音毡有限公司 | Automobile sound insulating pad with layered composite structure |
| CN106183325A (en) * | 2016-07-04 | 2016-12-07 | 无锡吉兴汽车部件有限公司 | The production method of sound insulating pad under auto rear seat |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4126884B4 (en) * | 1991-08-14 | 2004-09-30 | Perstorp Häussling GmbH | Soundproofing molded part and process for its production |
| CN102336047B (en) * | 2010-07-26 | 2014-02-12 | 上海新安汽车隔音毡有限公司 | Manufacturing method of resin felt part of automobile engine cover |
| CN102336167A (en) * | 2010-07-26 | 2012-02-01 | 上海新安汽车隔音毡有限公司 | Multi-layer sound insulation pad for automobile and manufacture method thereof |
| CN102337628A (en) * | 2010-07-26 | 2012-02-01 | 上海新安汽车隔音毡有限公司 | Manufacture method for low-density superfine fibrofelt |
| CN202089002U (en) * | 2011-01-04 | 2011-12-28 | 潘姣莉 | Environment-friendly sound insulation pad for cars |
| CN206485008U (en) * | 2016-12-15 | 2017-09-12 | 昆山九子莲汽车隔音材料有限公司 | A kind of sound-absorbing Sound-proof automotive carpet |
| CN107297937B (en) * | 2017-07-12 | 2019-05-24 | 安徽凯密克企业管理咨询有限公司 | A kind of production method of vehicle noise insulation pad |
-
2017
- 2017-11-23 CN CN201711185079.XA patent/CN109823283B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202413662U (en) * | 2011-12-28 | 2012-09-05 | 上海新安汽车隔音毡有限公司 | Automobile sound insulating pad with layered composite structure |
| CN106183325A (en) * | 2016-07-04 | 2016-12-07 | 无锡吉兴汽车部件有限公司 | The production method of sound insulating pad under auto rear seat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109823283A (en) | 2019-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101612788B (en) | Method for producing sound-heat insulated cushion of automobile | |
| CN101961996B (en) | Method for producing automotive rear shelf | |
| CN103101255A (en) | Light composite board, production method and application thereof | |
| JPH0522578B2 (en) | ||
| CN102795087B (en) | Production method of automobile ceiling | |
| CN102381256B (en) | Wet-method roof producing process of spreaded glass fibers with adhesive | |
| CN109159500A (en) | It is a kind of using bamboo fibre as roof of the vehicle of substrate and preparation method thereof | |
| CN102689487A (en) | Preparing method for automobile interior trim plate | |
| CN105034531A (en) | Production technology of car carpets | |
| CN102896867A (en) | Production method of automotive blanket | |
| CN103171235B (en) | The production method of the inflatable Light laminated board of a kind of sandwich layer | |
| CN103434065B (en) | Production technology of automobile seat decorative cover | |
| CN111204294B (en) | Integrally formed automobile EPP ceiling and preparation method thereof | |
| CN109808287A (en) | The production method for having preceding wall sound-isolation pad in the automobile of the soft or hard structure of sound absorption function | |
| CN109823283B (en) | Method for manufacturing sound insulation pad under automobile rear seat | |
| CN101462520A (en) | Technique for processing fibrilia automobile ceiling | |
| CN110091560A (en) | A kind of production technology for the automobile ceiling that can install invisible microphones | |
| CN105015078A (en) | Wet method top line secondary molding edge bounding production process | |
| CN103434248B (en) | To mix the production technology of the back-shelf board that the PP wood flour board of glass is base material | |
| CN101337526B (en) | Wet process technique of PU flexible foam top-liner | |
| CN105109056A (en) | Process for producing automotive hat rack | |
| CN208682697U (en) | A kind of composite fibre car carpeting | |
| CN107554036A (en) | The production technology of Wet One-step ceiling flange | |
| CN207128172U (en) | Polyurethane foam mould | |
| CN103321311B (en) | A kind of overlay film 3D acoustic(al)absorbent and preparation method thereof |
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 |