CN113022092A - Manufacturing process of fiber-made three-dimensional wall surface acoustic board - Google Patents
Manufacturing process of fiber-made three-dimensional wall surface acoustic board Download PDFInfo
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- CN113022092A CN113022092A CN202110332859.2A CN202110332859A CN113022092A CN 113022092 A CN113022092 A CN 113022092A CN 202110332859 A CN202110332859 A CN 202110332859A CN 113022092 A CN113022092 A CN 113022092A
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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
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
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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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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/55—Polyesters
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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
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
- B32B2037/1215—Hot-melt adhesive
- B32B2037/1223—Hot-melt adhesive film-shaped
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a process for manufacturing a three-dimensional wall surface sound-absorbing board by using fibers, which relates to the technical field of wall body sound-absorbing boards and comprises the steps of manufacturing needle-punched non-woven fabrics, manufacturing hot-air non-woven fabrics, combining the needle-punched non-woven fabrics with the hot-air non-woven fabrics, shaping a finished product, taking 4 pet short fibers with conventional melting points, putting the pet short fibers on 4 needle machines, carrying out needle punching work on the pet short fibers by each needle machine, carrying out cross needle punching reinforcement on the pet short fibers, and manufacturing the pet short fibers into needle-punched non-woven fabrics. The device is manufactured by adopting multiple processes, and the traditional needling hot air non-woven product is subjected to special hot drying and cold pressing for shaping, so that strong odor and volatile toxic substances are not generated in each step of process processing, the current environment-friendly energy-saving low-carbon concept is met, and in addition, the product has special structure and density combination by utilizing different fineness and special cross section shapes of fibers under multiple process combinations, so that a good sound absorption and sound insulation effect is realized, and the customer requirements are met.
Description
Technical Field
The invention relates to the technical field of wall acoustic boards, in particular to a process for manufacturing a three-dimensional wall acoustic board by using fibers.
Background
With the continuous development of the construction industry, people seek to gradually improve the construction aspect, and in some buildings, usually, a layer of sound-absorbing board is installed on the wall surface of a building, the sound-absorbing board is a plate-shaped product with the functions of sound absorption and noise reduction, and is mainly applied to places with higher acoustic environment requirements and high-grade decoration, such as movie theaters, music halls, museums, exhibition halls, libraries, auditorias, galleries, auction halls, gymnasiums, report halls, multi-functional halls, hotel lobbies, hospitals, markets, schools, music houses, meeting rooms, studios, recording rooms, KTV (Karaoke television) rooms, pubs, industrial factory buildings, machine rooms, families, and the like.
The invention with Chinese patent number CN102587525A discloses a production process method of an acoustic board, which is characterized in that the acoustic board is prepared by the following 9 procedures arranged in sequence on the premise of the assembly line arrangement of acoustic board moulds: step 1, placing a bottom plate; step 2 is a first filling; step 3, placing a steel wire mesh for the first time; step 4, filling for the second time; step 5, placing the steel wire mesh for the second time; step 6, filling for the third time; step 8, positioning and stamping a die; step 9 is demolding; the step 10 is baking.
According to the comparative example and the practice, the manufacturing process of the sound-absorbing wall panel used in each relevant place at present mainly adopts the manufacturing process of foaming and cutting forming to finish the manufacture of the shape of a sound-absorbing product, and the main foaming process has the defects that the conditions of strong odor release, toxic substance volatilization and the like exist because of the mixing and stirring of chemical preparations and the subsequent hot processing and shaping, when workers inhale the odor, the bodies of the manufacturing workers and the subsequent users are easily damaged, the sound insulation effect is not ideal, and the defect is not correspondingly improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a process for manufacturing a three-dimensional wall sound-absorbing plate by using fibers, which solves the problems that the existing manufacturing process of the sound-absorbing wall plate used in various related places mainly adopts a foaming and cutting forming manufacturing process to finish the manufacturing of the shape of a sound-absorbing product, the main defect of the foaming process is that the conditions of strong odor release, volatilization of toxic substances and the like exist due to the mixing and stirring of chemical preparations and subsequent hot processing and shaping, when workers inhale the odors, the bodies of the manufacturing workers and the subsequent users are easily damaged, and the sound-insulating effect is not ideal.
In order to achieve the purpose, the invention is realized by the following technical scheme: a process for manufacturing a three-dimensional wall surface acoustic board by fibers comprises the following steps:
s1, manufacturing a needle-punched non-woven fabric: taking 4-5 pet short fibers with conventional melting points, putting the pet short fibers into 4-5 needle machines, and enabling each needle machine to carry out needle punching work on each pet short fiber, carrying out cross needle punching reinforcement on the pet short fibers, and manufacturing the pet short fibers into needle punched non-woven fabrics;
s2, manufacturing the hot-air non-woven fabric: taking 4-5 low-melting-point pet short fibers and 4-5 conventional-melting-point hollow pet short fibers, putting the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers on a hot rolling machine, and hot rolling the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers together to manufacture hot-air non-woven fabrics;
s3, combining the needle punched non-woven fabric with the hot air non-woven fabric: taking out the hot-air non-woven fabric manufactured in the step S2, adhering a layer of hot melt film on the upper surface and the lower surface of the hot-air non-woven fabric, adhering the needled non-woven fabric manufactured in the step S1 on the back surfaces of the two layers of hot melt films, baking the two layers of hot melt films in a ceramic heating oven to soften and melt the low-melting-point and combined hot melt films in the three layers of products, taking out the three layers of products after softening and melting, putting the three layers of products into a cooling mold, matching the cooling mold with the product in shape, and carrying out cold pressing on the product in the cooling mold to finish the shaping work of the product in the cooling mold;
s4, shaping of a finished product: and (5) separating the product shaped in the step (S3) from the die, putting the product on a cutting machine after the separation is finished, cutting the product on the cutting machine by using a cutting die, cutting the product into a size matched with the drawing according to the size on the drawing, and obtaining the final product after the cutting is finished.
Preferably, in the step S1, the conventional melting point of each pet short fiber is 160-240 ℃.
Preferably, in the step S1, the cross-sectional curl fineness of each pet staple fiber is controlled to be within a range of 2 to 7D.
Preferably, in the step S2, the low melting point of each pet staple fiber is 120 to 190 ℃, and the conventional melting point of each hollow pet staple fiber is 160 to 240 ℃.
Preferably, in the step S2, the crimp fineness of each of the low-melting-point pet staple fibers and the hollow pet staple fibers is controlled to be in the range of 2 to 15D.
Preferably, in the step S3, the baking temperature is controlled to be 170 to 210 ℃, and the baking time is controlled to be 1 to 3 min.
Preferably, in the step S3, the molding cooling and setting time is controlled to be 2-4 min.
Preferably, in step S4, after the product is cut, the remaining product is packaged and recycled, and the recycled product is recycled, so as to save materials.
Advantageous effects
The invention provides a process for manufacturing a three-dimensional wall surface acoustic board by using fibers. Compared with the prior art, the method has the following beneficial effects:
the manufacturing process of the three-dimensional wall sound-absorbing board made of the fibers comprises the steps of adopting a double-layer needling process and a sandwich non-woven product made of a hot air process, carrying out one-step forming through a subsequent hot-drying and cold-pressing die pressing process, and carrying out a cutting process and final forming by a cutting bed, wherein the manufacturing process of the sound-absorbing board adopts multiple processes, and the traditional needled hot-air non-woven product is subjected to special hot-drying and cold-pressing forming, so that strong smell and volatile toxic substances are not generated in each step of processing, the manufacturing process accords with the current environment-friendly energy-saving low-carbon concept, in addition, the product has special structure and density combination by utilizing different fineness and special section shapes of the fibers under the combination of multiple processes, and the non-woven fabric has certain mechanical strength and more pores on the surface by utilizing the crossed needling of multiple needling machines, so as to provide better structural requirements for subsequent acoustic wave bands and further realize, the requirements of customers are met.
Drawings
FIG. 1 is a flow chart of a fabrication process of the present invention;
FIG. 2 is a schematic structural diagram of a first product of the present invention;
FIG. 3 is a schematic structural diagram of a second product of the present invention;
FIG. 4 is a schematic structural diagram of a third product of the present invention;
fig. 5 is a schematic structural diagram of a product four of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides three technical solutions:
example one
A process for manufacturing a three-dimensional wall surface acoustic board by fibers comprises the following steps:
s1, manufacturing a needle-punched non-woven fabric: taking 4 pet short fibers with conventional melting points, putting the pet short fibers into 4 needling machines, and needling each pet short fiber by each needling machine to carry out cross needling reinforcement on the pet short fibers so as to manufacture the pet short fibers into a needled non-woven fabric;
s2, manufacturing the hot-air non-woven fabric: taking 4 low-melting-point pet short fibers and 4 conventional-melting-point hollow pet short fibers, putting the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers on a hot rolling machine, and hot rolling the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers together to manufacture the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers into hot-air non-;
s3, combining the needle punched non-woven fabric with the hot air non-woven fabric: taking out the hot-air non-woven fabric manufactured in the step S2, adhering a layer of hot melt film on the upper surface and the lower surface of the hot-air non-woven fabric, adhering the needled non-woven fabric manufactured in the step S1 on the back surfaces of the two layers of hot melt films, baking the two layers of hot melt films in a ceramic heating oven to soften and melt the low-melting-point and combined hot melt films in the three layers of products, taking out the three layers of products after softening and melting, putting the three layers of products into a cooling mold, matching the cooling mold with the product in shape, and carrying out cold pressing on the product in the cooling mold to finish the shaping work of the product in the cooling mold;
s4, shaping of a finished product: and (5) separating the product shaped in the step (S3) from the die, putting the product on a cutting machine after the separation is finished, cutting the product on the cutting machine by using a cutting die, cutting the product into a size matched with the drawing according to the size on the drawing, and obtaining the final product after the cutting is finished.
Further, in the step S1, the conventional melting point of each pet staple fiber is 160 ℃.
Further, in the step S1, the cross-sectional crimp fineness of each pet staple fiber is controlled to be within 2D.
Further, in the step S2, the low melting point of each pet staple fiber is 120 ℃, and the conventional melting point of each hollow pet staple fiber is 160 ℃.
Further, in the step S2, the crimp fineness of each of the low melting point pet staple fiber and the hollow pet staple fiber is controlled to be within 2D.
Further, in the step S3, the baking temperature is controlled at 170 ℃, and the baking time is controlled at 1 min.
Further, in the step S3, the molding cooling and setting time is controlled to be 2 min.
Further, in step S4, after the product is cut, the remaining products are packaged and recycled, and the recycled products are recycled, so that the material is saved.
Example two
A process for manufacturing a three-dimensional wall surface acoustic board by fibers comprises the following steps:
s1, manufacturing a needle-punched non-woven fabric: taking 5 pet short fibers with conventional melting points, putting the pet short fibers into 5 needling machines, and needling each pet short fiber by each needling machine to carry out cross needling and reinforcement on the pet short fibers so as to manufacture the pet short fibers into a needled non-woven fabric;
s2, manufacturing the hot-air non-woven fabric: taking 5 low-melting-point pet short fibers and 5 conventional-melting-point hollow pet short fibers, putting the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers on a hot rolling machine, and hot rolling the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers together to manufacture the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers into hot-air non-;
s3, combining the needle punched non-woven fabric with the hot air non-woven fabric: taking out the hot-air non-woven fabric manufactured in the step S2, adhering a layer of hot melt film on the upper surface and the lower surface of the hot-air non-woven fabric, adhering the needled non-woven fabric manufactured in the step S1 on the back surfaces of the two layers of hot melt films, baking the two layers of hot melt films in a ceramic heating oven to soften and melt the low-melting-point and combined hot melt films in the three layers of products, taking out the three layers of products after softening and melting, putting the three layers of products into a cooling mold, matching the cooling mold with the product in shape, and carrying out cold pressing on the product in the cooling mold to finish the shaping work of the product in the cooling mold;
s4, shaping of a finished product: and (5) separating the product shaped in the step (S3) from the die, putting the product on a cutting machine after the separation is finished, cutting the product on the cutting machine by using a cutting die, cutting the product into a size matched with the drawing according to the size on the drawing, and obtaining the final product after the cutting is finished.
Further, in the step S1, the conventional melting point of each pet staple fiber is 240 ℃.
Further, in the step S1, the cross-sectional crimp fineness of each pet staple fiber is controlled to be within 7D.
Further, in the step S2, the low melting point of each pet staple fiber is 190 ℃, and the conventional melting point of each hollow pet staple fiber is 240 ℃.
Further, in the step S2, the crimp fineness of each of the low-melting-point pet staple fiber and the hollow pet staple fiber is controlled to be within 15D.
Further, in the step S3, the baking temperature is controlled at 210 ℃, and the baking time is controlled at 3 min.
Further, in the step S3, the molding cooling and setting time is controlled to be 4 min.
Further, in step S4, after the product is cut, the remaining products are packaged and recycled, and the recycled products are recycled, so that the material is saved.
EXAMPLE III
A process for manufacturing a three-dimensional wall surface acoustic board by fibers comprises the following steps:
s1, manufacturing a needle-punched non-woven fabric: taking 4 pet short fibers with conventional melting points, putting the pet short fibers into 4 needling machines, and needling each pet short fiber by each needling machine to carry out cross needling reinforcement on the pet short fibers so as to manufacture the pet short fibers into a needled non-woven fabric;
s2, manufacturing the hot-air non-woven fabric: taking 4 low-melting-point pet short fibers and 4 conventional-melting-point hollow pet short fibers, putting the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers on a hot rolling machine, and hot rolling the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers together to manufacture the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers into hot-air non-;
s3, combining the needle punched non-woven fabric with the hot air non-woven fabric: taking out the hot-air non-woven fabric manufactured in the step S2, adhering a layer of hot melt film on the upper surface and the lower surface of the hot-air non-woven fabric, adhering the needled non-woven fabric manufactured in the step S1 on the back surfaces of the two layers of hot melt films, baking the two layers of hot melt films in a ceramic heating oven to soften and melt the low-melting-point and combined hot melt films in the three layers of products, taking out the three layers of products after softening and melting, putting the three layers of products into a cooling mold, matching the cooling mold with the product in shape, and carrying out cold pressing on the product in the cooling mold to finish the shaping work of the product in the cooling mold;
s4, shaping of a finished product: and (5) separating the product shaped in the step (S3) from the die, putting the product on a cutting machine after the separation is finished, cutting the product on the cutting machine by using a cutting die, cutting the product into a size matched with the drawing according to the size on the drawing, and obtaining the final product after the cutting is finished.
Further, in the step S1, the conventional melting point of each pet staple fiber is 190 ℃.
Further, in the step S1, the cross-sectional crimp fineness of each pet staple fiber is controlled to be within 5D.
Further, in the step S2, the low melting point of each pet staple fiber is 150 ℃, and the conventional melting point of each hollow pet staple fiber is 190 ℃.
Further, in the step S2, the crimp fineness of each of the low melting point pet staple fiber and the hollow pet staple fiber is controlled to be within 8D.
Further, in the step S3, the baking temperature is controlled at 190 ℃ and the baking time is controlled at 2 min.
Further, in the step S3, the molding cooling and setting time is controlled to be 3 min.
Further, in step S4, after the product is cut, the remaining products are packaged and recycled, and the recycled products are recycled, so that the material is saved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A process for manufacturing a three-dimensional wall surface acoustic board by using fibers is characterized by comprising the following steps:
s1, manufacturing a needle-punched non-woven fabric: taking 4-5 pet short fibers with conventional melting points, putting the pet short fibers into 4-5 needle machines, and enabling each needle machine to carry out needle punching work on each pet short fiber, carrying out cross needle punching reinforcement on the pet short fibers, and manufacturing the pet short fibers into needle punched non-woven fabrics;
s2, manufacturing the hot-air non-woven fabric: taking 4-5 low-melting-point pet short fibers and 4-5 conventional-melting-point hollow pet short fibers, putting the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers on a hot rolling machine, and hot rolling the low-melting-point pet short fibers and the conventional-melting-point hollow pet short fibers together to manufacture hot-air non-woven fabrics;
s3, combining the needle punched non-woven fabric with the hot air non-woven fabric: taking out the hot-air non-woven fabric manufactured in the step S2, adhering a layer of hot melt film on the upper surface and the lower surface of the hot-air non-woven fabric, adhering the needled non-woven fabric manufactured in the step S1 on the back surfaces of the two layers of hot melt films, baking the two layers of hot melt films in a ceramic heating oven to soften and melt the low-melting-point and combined hot melt films in the three layers of products, taking out the three layers of products after softening and melting, putting the three layers of products into a cooling mold, matching the cooling mold with the product in shape, and carrying out cold pressing on the product in the cooling mold to finish the shaping work of the product in the cooling mold;
s4, shaping of a finished product: and (5) separating the product shaped in the step (S3) from the die, putting the product on a cutting machine after the separation is finished, cutting the product on the cutting machine by using a cutting die, cutting the product into a size matched with the drawing according to the size on the drawing, and obtaining the final product after the cutting is finished.
2. The process for manufacturing the three-dimensional wall surface acoustic board made of fibers according to claim 1, which is characterized in that: in the step S1, the conventional melting point of each pet staple fiber is 160-240 ℃.
3. The process for manufacturing the three-dimensional wall surface acoustic board made of fibers according to claim 1, which is characterized in that: in the step S1, the section curl fineness of each pet staple fiber is controlled within the range of 2-7D.
4. The process for manufacturing the three-dimensional wall surface acoustic board made of fibers according to claim 1, which is characterized in that: in the step S2, the low melting point of each pet staple fiber is 120-190 ℃, and the conventional melting point of each hollow pet staple fiber is 160-240 ℃.
5. The process for manufacturing the three-dimensional wall surface acoustic board made of fibers according to claim 1, which is characterized in that: in the step S2, the crimp fineness of each of the low-melting-point pet staple fibers and the hollow pet staple fibers is controlled within a range of 2 to 15D.
6. The process for manufacturing the three-dimensional wall surface acoustic board made of fibers according to claim 1, which is characterized in that: in the step S3, the baking temperature is controlled to be 170-210 ℃, and the baking time is controlled to be 1-3 min.
7. The process for manufacturing the three-dimensional wall surface acoustic board made of fibers according to claim 1, which is characterized in that: in the step S3, the molding cooling and shaping time is controlled to be 2-4 min.
8. The process for manufacturing the three-dimensional wall surface acoustic board made of fibers according to claim 1, which is characterized in that: in step S4, after the product is cut, the remaining products are packaged and recycled, and the recycled products are recycled, so that the material is saved.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100320030A1 (en) * | 2008-02-14 | 2010-12-23 | Nagoya Oilchemical Co., Ltd | Sound absorbing skin material and sound absorbing material utilizing the same |
| CN107429456A (en) * | 2015-03-12 | 2017-12-01 | 东丽株式会社 | It is laminated non-woven fabrics |
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2021
- 2021-03-29 CN CN202110332859.2A patent/CN113022092A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100320030A1 (en) * | 2008-02-14 | 2010-12-23 | Nagoya Oilchemical Co., Ltd | Sound absorbing skin material and sound absorbing material utilizing the same |
| CN107429456A (en) * | 2015-03-12 | 2017-12-01 | 东丽株式会社 | It is laminated non-woven fabrics |
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Application publication date: 20210625 |