CN111331990A - Light wall decoration plate and preparation method thereof - Google Patents

Light wall decoration plate and preparation method thereof Download PDF

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Publication number
CN111331990A
CN111331990A CN202010297774.0A CN202010297774A CN111331990A CN 111331990 A CN111331990 A CN 111331990A CN 202010297774 A CN202010297774 A CN 202010297774A CN 111331990 A CN111331990 A CN 111331990A
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China
Prior art keywords
layer
natural
fiber reinforced
reinforced polypropylene
natural fiber
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CN202010297774.0A
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Chinese (zh)
Inventor
王志民
肖峰
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Shanghai Shengfeng Building Material Technology Co ltd
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Shanghai Shengfeng Building Material Technology Co ltd
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Priority to CN202010297774.0A priority Critical patent/CN111331990A/en
Publication of CN111331990A publication Critical patent/CN111331990A/en
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    • 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
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    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0866—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements composed of several layers, e.g. sandwich panels or layered panels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
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    • E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Finishing Walls (AREA)

Abstract

The invention discloses a light wall veneer, which comprises a decorative surface layer and a natural fiber reinforced polypropylene plate layer; the decorative surface layer and the natural fiber reinforced polypropylene plate layer are bonded through a moisture-curing reaction type polyurethane hot melt adhesive; the natural fiber reinforced polypropylene plate layer is composed of a transition layer, a middle layer and a balance layer, the natural fiber reinforced polypropylene plate layer is formed by three-dimensionally interweaving 40-60% of natural fibers and 60-40% of polypropylene short fibers into a fiber felt, and hot-pressing and bonding after the transition layer and the balance layer are respectively attached to two surfaces of the natural fiber reinforced polypropylene plate layer, wherein the transition layer and the balance layer are made of polyester non-woven fabrics with the same material, and the natural fiber reinforced polypropylene plate layer is bonded with the decorative surface layer through the transition layer. The natural fiber leftovers used in the light wall veneer can be recycled by 100 percent after being opened, volatile pollutants are not generated in the production process, and the light wall veneer is environment-friendly and can meet different aesthetic requirements.

Description

Light wall decoration plate and preparation method thereof
Technical Field
The invention belongs to the field of wall panels, and particularly relates to a light wall decoration board and a preparation method thereof.
Background
The wall protection veneer is mainly focused on medium and high density plates such as solid wood composite plates, wood-plastic plates, stone-plastic plates and the like at present, and the wall protection veneer is a synthetic plate prepared by using substances containing volatile pollutants such as adhesives, resins, fillers, flame retardants, water-proofing agents and the like in proportion through high temperature and high pressure in the manufacturing process. During the preparation process, the solvent volatilizes to generate toxic and harmful gas, which has certain harm to human body and environment. In addition, the dust particles are easy to generate in the recycling process, and are slowly decomposed, thereby having adverse effects on the global ecological environment. On the other hand, the traditional wall protection veneer has high density, high hardness and brittleness, low toughness and heavy weight, and is not suitable for light-weight and modularized installation. Therefore, it is necessary to prepare a high-quality, green, ecological and environment-friendly functional wallboard material. In addition, the appearance of the wall protection veneer is also required, and therefore, the wall protection panels which can meet different aesthetic requirements are more concerned.
Disclosure of Invention
The invention aims to provide a light-weight wall panel which is green, ecological and environment-friendly and can meet different aesthetic requirements.
The conception of the invention is as follows: the natural fiber is renewable resource, low pollution, low energy consumption, can be naturally degraded after being used, the natural fiber and the polypropylene fiber are interwoven into a felt, and the natural fiber and the polypropylene fiber are fixed by utilizing the thermoplastic heating of the polypropylene fiber, thereby overcoming the harm of organic solvent and volatile toxic gas used in the traditional manufacture of wall decoration boards. Meanwhile, in order to meet various aesthetic requirements, decorative layers with various patterns used for different requirements can be adhered to the outer surface of the wall decorative plate.
The technical scheme of the invention is as follows:
a light wall veneer comprises a decorative surface layer and a natural fiber reinforced polypropylene plate layer; the decorative surface layer and the natural fiber reinforced polypropylene plate layer are bonded through a moisture-curing reaction type polyurethane hot melt adhesive; the natural fiber reinforced polypropylene plate layer is composed of a transition layer, a middle layer and a balance layer, the natural fiber reinforced polypropylene plate layer is formed by three-dimensionally interweaving 40-60% of natural fibers and 60-40% of polypropylene short fibers into a fiber felt, and hot-pressing and bonding after the transition layer and the balance layer are respectively attached to two surfaces of the natural fiber reinforced polypropylene plate layer, wherein the transition layer and the balance layer are made of polyester non-woven fabrics with the same material, and the natural fiber reinforced polypropylene plate layer is bonded with the decorative surface layer through the transition layer.
In the technical scheme of the invention, the veneer layer and the natural fiber reinforced polypropylene plate layer are bonded by the moisture curing reaction type polyurethane hot melt adhesive, and the process is bonding by a hot melt physical method without using toxic and harmful substances; and the adhesion is carried out at a lower temperature, generally at 110-130 ℃, and damage such as color change and the like to the surface of the veneer layer can not be caused, so that the veneer layers of various different materials can be freely spliced to be made into textures with three-dimensional sense formed by different materials, and different aesthetic requirements of people can be met. If the method of the invention is not used, the method of hot-melting and sticking the finish coat when the polypropylene plate is hot-melted is directly used, the surface of the finish coat can be damaged by color change and the like at the higher temperature because the melting point of polypropylene is 165 ℃ and the hot-press molding temperature is 180-240 ℃; other facing layers which do not resist high temperature cannot be used, so that the requirements of people on various facing layers with different patterns are limited.
According to the invention, 40-60% of natural fibers and 60-40% of polypropylene short fibers are three-dimensionally interwoven into a fiber felt, air exists between the interwoven fibers, and after a transition layer and a balance layer are respectively attached to two surfaces of the fiber felt, hot-pressing adhesion of a facing layer is carried out. Like this, in the hot pressing in-process, the polypropylene staple fiber that interweaves in natural fibre is met the heat and is melted, and the shaping under the pressure seals the air in some fibre between the fibre to formed the natural fibre reinforced polypropylene sheet layer of low density that has certain still air, evenly distributed's polypropylene makes natural fibre reinforced polypropylene sheet layer intensity high, the toughness is big, is fit for the integrated installation of lightweight. The transition layer and the balance layer are attached to two sides of the fibrofelt before hot pressing, and due to the fact that the transition layer and the balance layer are made of the same material, the stress on the front side and the back side of the fibrofelt can be balanced in the hot pressing process, and the fibrofelt is straight and does not warp. During the hot pressing process, the molten polypropylene fibers bond the transition layer and the balance layer firmly, thereby forming the natural fiber reinforced polypropylene plate layer.
The polypropylene fiber that natural fiber reinforced polypropylene sheet layer melted in the hot pressing process not only glues transition layer and balancing layer together, still close to the inner face of transition layer and balancing layer simultaneously and seal the most part of space tip in the fibre, when gluing the finish coat with moisture cure reaction type polyurethane hot melt adhesive, the transition layer can block hot melt glue solution and get into the natural fiber reinforced polypropylene sheet layer inside, so not only reduced the glue solution waste, strengthened the bonding fastness, the adhesive strength of polypropylene fiber and veneer sheet layer has been improved, the glue solution has still been avoided simultaneously and has been immersed and block up the inside gas pocket of natural fiber reinforced polypropylene sheet layer. Therefore, the veneer layer can be firmly bonded by using a small amount of the moisture-curing reaction type polyurethane hot melt adhesive, and a hot melt adhesive film is not required to be specially arranged for bonding, so that the material is saved. Because the decorative surface layer and the natural fiber reinforced polypropylene board layer of the light wall decorative board are bonded by the moisture curing reaction type polyurethane hot melt adhesive, the temperature required by bonding is lower, and the decorative surface layer or patterns on the decorative surface layer are not discolored due to the overhigh temperature required during bonding, so that the usable decorative surface layer materials are wider, and the wide selection of the decorative surface layer can meet different aesthetic requirements of people. The balance layer ensures that the plate is not warped, the stress on the front surface and the back surface is balanced, and the flatness of the product is ensured.
The natural fibers used in the technical scheme of the invention include sisal fibers, abaca fibers, ramie fibers, flax fibers, hemp fibers and the like, and preferably, the natural fibers are natural jute fibers or natural bamboo fibrils. The natural fibrilia has natural antibacterial component of the sesamol, and the hemicellulose component in the natural fibrilia has the function of absorbing ultraviolet rays; the natural bamboo fiber has natural antibacterial components bamboo jade, and the hemicellulose component in the natural bamboo fiber has the function of absorbing ultraviolet rays, so that the wall decoration plate prepared from the natural jute fiber or the natural bamboo fiber has the functions of natural antibacterial, antibacterial and ultraviolet ray absorption.
Preferably, the decorative surface layer is decorative wall cloth, a PVC decorative film or leather. Of course, the above-mentioned various decorative materials can be matched and used to make various three-dimensional or plane spliced decorative surface layers.
Preferably, the light weight wall veneer contains 75-80% of still air. Static air is sealed in the light wall veneer, so the light wall veneer has light weight, also has obvious heat insulation and heat preservation, sound absorption and noise reduction effects, and is suitable for modularized installation.
The invention also provides a preparation method of the light wall veneer, which comprises the following steps:
the method comprises the following steps: manufacturing natural fiber reinforced polypropylene plate layer
A. Mixing natural fibers and polypropylene short fibers in proportion, then carrying out coarse opening and fine opening, carding to form a fiber net, and carrying out pre-needling and main needling to prepare a fiber felt;
B. adhering polyester non-woven fabrics with the same material on two sides of the prepared fibrofelt, performing hot pressing at 180-200 ℃ by using a continuous contact type flat press, and performing cold press molding at 10-15 ℃;
step two: and adhering a decorative surface layer on the surface of the natural fiber reinforced polypropylene plate layer by using a moisture-curing reaction type polyurethane hot melt adhesive.
According to the preparation method of the light wall decorative panel, the fibers are subjected to processes of mixing, opening, carding, needling and the like, so that the fibers are fully interwoven and keep proper gaps, regular static air is formed in the hot pressing process, and the density of the light wall decorative panel is reduced.
In the step B of the first preparation method of the light wall decoration plate, the polyester non-woven fabrics made of the same material are firstly stuck on two surfaces of the fiber felt, and then hot pressing is carried out. In the hot pressing process, polypropylene short fibers interwoven among natural fibers are melted and then solidified to form a polypropylene support with certain strength, so that the strength of the light wall veneer is increased; in addition, the polypropylene that melts in the hot pressing process is bonded with the transition layer and the balance layer, and most of the gaps in the fibers are sealed at the inner surfaces close to the transition layer and the balance layer, so that the penetration of glue liquid to the fiber gaps during the adhesion of the moisture-curing reaction type polyurethane hot melt adhesive in the second step is avoided, the moisture-curing reaction type polyurethane hot melt adhesive can be saved on one hand, and the adhesion is firmer on the other hand.
Preferably, the contact type cold and hot plate machine of the first step is a continuous type. Continuous heat baking can improve thermal efficiency and produce longer sheets.
The invention has the beneficial effects that:
the natural fiber leftovers used in the light wall veneer can be recycled by 100 percent after being opened, and the light wall veneer is green, ecological and environment-friendly. In the preparation process of the light wall veneer, the transition layer and the balance layer are bonded by hot-melt polypropylene; the decorative surface layer is bonded by using a moisture-curing reaction type polyurethane hot melt adhesive, the bonding processes are all bonded by a hot melt physical method, no volatile pollutants are generated, and the preparation process is environment-friendly. In the preparation process, the transition layer and the balance layer are firstly attached to two sides of a fiber felt formed by polypropylene staple fibers and natural fibers, and then hot-melt adhesion is carried out, so that closed static air is formed inside the light wall veneer, the density is reduced, the sound insulation and heat preservation effects are achieved, the using amount of the moisture curing reaction type polyurethane hot melt adhesive can be reduced, and the adhesive force is enhanced. The decorative surface layer is pasted by using the moisture-curing reaction type polyurethane hot melt adhesive, the color is not easy to change, and various materials can be pasted. Therefore, the light wall veneer of the invention has the advantages of green environmental protection, low density and high strength, and can meet different aesthetic requirements.
Drawings
Fig. 1 is a schematic structural view of a lightweight wall veneer according to the present invention.
In the figure: 1. decorating the surface layer; 2. a transition layer; 3. an intermediate layer; 4. and (4) a balancing layer.
Detailed Description
The present invention will be described in detail with reference to examples.
Fig. 1 is a light weight wall decoration board of the present invention, which comprises a decorative surface layer 1 and a natural fiber reinforced polypropylene board layer; the decorative surface layer 1 and the natural fiber reinforced polypropylene plate layer are bonded through a moisture-curing reaction type polyurethane hot melt adhesive; the natural fiber reinforced polypropylene plate layer is composed of a transition layer 2, a middle layer 3 and a balance layer 4, the natural fiber reinforced polypropylene plate layer is formed by three-dimensionally interweaving 40-60% of natural fibers and 60-40% of polypropylene short fibers into a fiber felt, adhering the transition layer 2 and the balance layer 4 to two sides of the natural fiber reinforced polypropylene plate layer respectively, and then carrying out hot pressing and bonding on the two sides of the natural fiber reinforced polypropylene plate layer, and the fiber felt formed by three-dimensionally interweaving 40-60% of natural fibers and 60-40% of polypropylene short fibers is cooled into the middle layer after being hot pressed; the transition layer 2 and the balance layer 4 are made of polyester non-woven fabrics with the same material, and the natural fiber reinforced polypropylene board layer is bonded with the decoration surface 1 layer through the transition layer 2.
Example 1
The natural bamboo fiber light wall decoration board is prepared by the following specific preparation processes:
the method comprises the following steps: manufacturing natural bamboo fiber reinforced polypropylene plate layer
A. Feeding natural bamboo fiber and polypropylene fiber short fiber into a bale opener, mixing according to the mass ratio of 40% to 60%, primarily opening, finely opening, and carding into an upper layer and a lower layer of fiber nets by a carding machine. Feeding the fiber web into a lapping machine to be laminated into the fiber web with required thickness, feeding the fiber web into a needle machine to be pre-needled and formed, and then carrying out upper and lower main needling to form a fiber felt.
B. Adhering polyester non-woven fabrics with the same material on two sides of the prepared fibrofelt, performing hot pressing at 180-200 ℃ by using a continuous contact type flat press, and performing cold press molding at 10-15 ℃;
in the hot pressing process, the polypropylene short fibers interwoven in the natural bamboo fibers are subjected to hot melting plasticization at high temperature and are bonded with the natural bamboo fibers, and the natural bamboo fibers are molded under pressure to seal air in part of the fibers among the fibers, so that the low-density reinforced polypropylene board layer with certain static air is formed. Meanwhile, the polypropylene fiber melted in the hot pressing process is bonded with the non-woven fabrics of the transition layer and the balance layer to prepare the bamboo fiber reinforced polypropylene plate layer.
And cutting the bamboo fiber reinforced polypropylene plate layer into required sizes.
Step two: and adhering decorative wall cloth on the surface of the natural bamboo fiber reinforced polypropylene board layer by using a moisture curing reaction type polyurethane hot melt adhesive, thus obtaining the natural bamboo fiber light wall decorative board.
In the manufacturing process of the natural bamboo fiber light wall decoration plate manufactured in the embodiment 1, the natural jute fiber light wall decoration plate can be manufactured by replacing the natural bamboo fiber with the natural jute fiber, and the manufacturing process is the same. Of course, there may be used natural fibers such as sisal, abaca, ramie, flax, hemp, etc. The natural fibrilia has natural antibacterial component of the sesamol, and the hemicellulose component in the natural fibrilia has the function of absorbing ultraviolet rays; the natural bamboo fiber has natural antibacterial components bamboo jade, and the hemicellulose component in the natural bamboo fiber has the function of absorbing ultraviolet rays, so that the wall decoration plate prepared from the natural jute fiber or the natural bamboo fiber has the functions of natural antibacterial, antibacterial and ultraviolet ray absorption.
The natural bamboo fiber light decorative board prepared by the invention is detected, and the result is shown in table 1.
The natural jute fiber light decorative board is prepared by the invention, wherein the natural jute fiber and the polypropylene short fiber are mixed according to the mass ratio of 60 percent to 40 percent, and the rest process is the same as the process for preparing the natural bamboo fiber light decorative board. The prepared natural jute fiber light decorative board is detected, and the result is shown in table 1.
The formula of the percentage (%) of the still air is × 100% of (1-material volume divided by board volume), wherein the material volume is the real volume of the material and the board volume is the apparent volume of the board.
TABLE 1
Figure BDA0002452858910000051
The results show that the light wall decorative board prepared by the invention does not contain formaldehyde and other volatile pollutants, and has the advantages of good mildew-proof effect, good sound absorption effect, good heat preservation effect, firm bonding and difficult peeling.
It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described above may be combined with each other as long as they do not conflict with each other. In addition, the above embodiments are only some embodiments of the present invention, not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Claims (6)

1. A light wall decoration board is characterized by comprising a decorative surface layer and a natural fiber reinforced polypropylene board layer; the decorative surface layer and the natural fiber reinforced polypropylene plate layer are bonded through a moisture-curing reaction type polyurethane hot melt adhesive;
the natural fiber reinforced polypropylene plate layer is composed of a transition layer, a middle layer and a balance layer, the natural fiber reinforced polypropylene plate layer is formed by three-dimensionally interweaving 40-60% of natural fibers and 60-40% of polypropylene short fibers into a fiber felt, and hot-pressing and bonding after the transition layer and the balance layer are respectively attached to two surfaces of the natural fiber reinforced polypropylene plate layer, wherein the transition layer and the balance layer are made of polyester non-woven fabrics with the same material, and the natural fiber reinforced polypropylene plate layer is bonded with the decorative surface layer through the transition layer.
2. The light weight wall tile of claim 1, wherein the natural fiber is natural jute fiber or natural bamboo fiber.
3. The lightweight wall trim panel of claim 1, wherein the decorative face layer is decorative wall cloth, a PVC decorative film, or leather.
4. A light weight wall tile according to any one of claims 1 to 3, wherein said light weight wall tile contains between 75% and 80% of still air.
5. A method of manufacturing a lightweight wall tile according to any of claims 1 to 4, comprising the steps of:
the method comprises the following steps: manufacturing natural fiber reinforced polypropylene plate layer
A. Mixing natural fibers and polypropylene short fibers in proportion, then carrying out coarse opening and fine opening, carding to form a fiber net, and carrying out pre-needling and main needling to prepare a fiber felt;
B. adhering polyester non-woven fabrics with the same material on two sides of the prepared fibrofelt, performing hot pressing at 180-200 ℃ by using a continuous contact type flat press, and performing cold press molding at 10-15 ℃;
step two: and adhering a decorative surface layer on the surface of the natural fiber reinforced polypropylene plate layer by using a moisture-curing reaction type polyurethane hot melt adhesive.
6. The method for preparing a lightweight wall decorative panel as set forth in claim 5, wherein said contact type cold and hot plate press in said first step is a continuous type.
CN202010297774.0A 2020-04-16 2020-04-16 Light wall decoration plate and preparation method thereof Pending CN111331990A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113580615A (en) * 2021-08-03 2021-11-02 绍兴寿春针纺织有限公司 Anti-static wall cloth production process
CN113829446A (en) * 2021-11-05 2021-12-24 德华兔宝宝装饰新材股份有限公司 Textile wall cloth decorative artificial board and manufacturing process thereof
CN114889237A (en) * 2022-01-06 2022-08-12 江阴延利新材料科技有限公司 Sound-insulation and sound-absorption fibrilia inner wallboard and manufacturing method thereof
CN115366501A (en) * 2022-08-25 2022-11-22 吉林省华纺静电材料科技有限公司 Coconut fiber composite material for automotive interior material and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113580615A (en) * 2021-08-03 2021-11-02 绍兴寿春针纺织有限公司 Anti-static wall cloth production process
CN113580615B (en) * 2021-08-03 2022-02-08 绍兴寿春针纺织有限公司 Anti-static wall cloth production process
CN113829446A (en) * 2021-11-05 2021-12-24 德华兔宝宝装饰新材股份有限公司 Textile wall cloth decorative artificial board and manufacturing process thereof
CN114889237A (en) * 2022-01-06 2022-08-12 江阴延利新材料科技有限公司 Sound-insulation and sound-absorption fibrilia inner wallboard and manufacturing method thereof
CN114889237B (en) * 2022-01-06 2023-12-15 江阴延利新材料科技有限公司 Sound-insulating and sound-absorbing fibrilia inner wallboard and manufacturing method thereof
CN115366501A (en) * 2022-08-25 2022-11-22 吉林省华纺静电材料科技有限公司 Coconut fiber composite material for automotive interior material and preparation method thereof

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