CN116462026A - Roll paper structure with bearing sound absorption function and light weight and preparation method - Google Patents

Roll paper structure with bearing sound absorption function and light weight and preparation method Download PDF

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Publication number
CN116462026A
CN116462026A CN202310478848.4A CN202310478848A CN116462026A CN 116462026 A CN116462026 A CN 116462026A CN 202310478848 A CN202310478848 A CN 202310478848A CN 116462026 A CN116462026 A CN 116462026A
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CN
China
Prior art keywords
paper
paper strip
wide
narrow
strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310478848.4A
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Chinese (zh)
Inventor
卢天健
陈昕
李墨筱
段明宇
沈承
于晨磊
赵龙武
耿振鑫
王新
田玉前
杨玲
贾祥省
孙庆玉
夏迎安
夏江丽
彭博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Aeronautics and Astronautics
Weihai Creditfan Ventilator Co Ltd
Original Assignee
Nanjing University of Aeronautics and Astronautics
Weihai Creditfan Ventilator Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing University of Aeronautics and Astronautics, Weihai Creditfan Ventilator Co Ltd filed Critical Nanjing University of Aeronautics and Astronautics
Priority to CN202310478848.4A priority Critical patent/CN116462026A/en
Publication of CN116462026A publication Critical patent/CN116462026A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/28—Wound package of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
    • B65H37/04—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for securing together articles or webs, e.g. by adhesive, stitching or stapling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/113—Size
    • B65H2701/1133—Size of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Building Environments (AREA)

Abstract

The invention provides a roll paper structure with a bearing and sound absorbing function and a preparation method thereof, which realize the mutual matching between spiral seams and paper pores through reasonable design of the structure, realize the high-performance sound absorption of paper and solve the problems of bearing and sound absorbing function integration and light design. The multifunctional light-weight paper roll structure with the function of bearing sound absorption comprises a wide paper strip and a narrow paper strip, wherein the wide paper strip and the narrow paper strip are mutually overlapped and curled into a plurality of layers and spirally curled, and an air slit is formed between the adjacent wide paper strip and the narrow paper strip. The preparation method of the roll paper structure with the bearing and sound absorbing functions and light weight comprises the following steps: cutting paper into two strips of wide strips and narrow strips; the narrow paper strips are stuck to the bottoms of the wide paper strips to form paper strips with one thick side and one thin side; and (3) starting from one end, curling, and tightly attaching one thick side of the bottom of the wide paper strip to obtain the paper roll structure with the multifunctional light weight for bearing and absorbing sound.

Description

Roll paper structure with bearing sound absorption function and light weight and preparation method
Technical Field
The invention relates to a roll paper structure with a bearing sound absorption function and a light weight and a preparation method thereof, belonging to the technical field of sound absorption and noise reduction.
Background
With the rapid development of society, noise pollution has become one of the major pollution problems in parallel with air pollution, water pollution and light pollution. People can generate neurasthenia symptoms such as tinnitus, headache, memory decline and the like after long-time exposure in a high-noise environment, and seriously damage normal functions of cardiovascular and laughing systems and the like of human bodies, thereby inducing diseases. Moreover, long-time strong noise can lead to acoustic fatigue linearity of mechanical structures such as rockets, spacecrafts and the like, and the service life of the structure is reduced. With the continuous development of lightweight equipment, in order to reduce the harm of noise, there is a more urgent need for novel sound-absorbing materials with lightweight, low cost, high sound absorption and high mechanical properties.
Currently, most sound absorbing materials are porous materials, including foamed metal, foamed polyurethane, natural fiber materials, and the like. The principle of sound absorption of such materials is that kinetic energy is converted into heat energy by friction between air and the walls of the pores of the material to be dissipated. The sound absorption performance of the porous material is closely related to the microstructure morphology of the porous material, and the pores are limited by the preparation process and cannot be accurately controlled. In addition, the porous material is not required to have more residual defects in the preparation process, the mechanical property is damaged, and the porous material cannot be used as a multifunctional bearing structure. In view of the foregoing, the conventional porous material cannot meet the noise control requirement of high-end equipment, and a multifunctional lightweight structure with load-bearing and sound-absorbing functions is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the roll paper structure with the bearing and sound absorption functions and the preparation method, and the reasonable design of the structure realizes the mutual matching between the spiral seam and the paper pore, realizes the high-performance sound absorption of paper, and solves the problems of bearing and sound absorption functions and light design.
The invention aims to achieve the aim, and the aim is achieved by the following technical scheme:
a multifunctional light-weight paper roll structure with sound absorption function comprises a wide paper strip and a narrow paper strip, wherein the wide paper strip and the narrow paper strip are mutually overlapped and curled into a plurality of layers and spirally curled, and an air slit is formed between the adjacent wide paper strip and the narrow paper strip.
On the basis of the multifunctional light roll paper structure with the function of bearing and absorbing sound, the wide paper strips and the narrow paper strips are Xuan paper, office paper or kraft paper, and the thickness is 0.05-0.5 mm.
On the basis of the paper roll structure with the bearing sound absorption multifunctional light weight, the width of the wide ceramic fiber paper strip is 10-100 mm.
On the basis of the paper roll structure with the bearing sound absorption multifunctional light weight, the width of the narrow paper strip is 1-10 mm.
On the basis of the multifunctional light roll paper structure with the function of bearing and absorbing sound, the cross section of the roll paper structure is round, triangular and petal-shaped.
On the basis of the paper roll structure with the multifunctional light weight for bearing and absorbing sound, the density of the wide paper strip and the narrow paper strip is 0.323-0.717g/cm 3 。
A preparation method of a roll paper structure with bearing and sound absorbing functions and light weight comprises the following steps:
(1) Cutting paper into two strips of wide strips and narrow strips;
(2) The narrow paper strips are stuck to the bottoms of the wide paper strips to form paper strips with one thick side and one thin side;
(3) And (3) starting from one end, curling, and tightly attaching one thick side of the bottom of the wide paper strip to obtain the paper roll structure with the multifunctional light weight for bearing and absorbing sound.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention relates to a multifunctional light-weight roll paper structure with bearing and sound absorption functions, which is formed by crossed, inlaid and curled paper strips with wide and narrow paper strips. Because the bottoms of the two paper strips are connected, a slit is formed between every two layers of roll paper on the upper layer, and the size of the slit is equivalent to the width of the bottom paper. As the air passes through the slot, the acoustic energy is converted to heat due to friction between the air and the slot walls. On the other hand, since the paper itself is a porous material, the oscillations of the air in the slit become more severe, i.e. the viscous effect in the slit is enhanced, in addition to the oscillations of the internal sound waves absorbing a part of the sound energy. In the mechanical aspect, as the layers of paper are mutually nested, buckling and crushing of the inner cylinder and the outer cylinder can be restrained by the adjacent round pipes, so that the mechanical property is enhanced. Further, the structure is made of paper, which has a low density and has excellent lightweight characteristics with respect to a metal material such as aluminum.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
FIG. 1 is a schematic illustration of a roll paper structure of the present invention carrying sound absorbing multifunction lighter weight;
FIG. 2 is a cross-sectional view of a single cell;
FIG. 3 is a diagram of a preparation process;
FIG. 4 is a diagram of three different curl shapes, wherein (a) a triangle curl, (b) a square curl, and (c) a petal curl;
FIG. 5 is a schematic view of sound absorption coefficients of three embodiments of a roll paper structure of the present invention carrying sound absorption multifunction lighter weight;
FIG. 6 is a schematic view of a quasi-static compression curve of three embodiments of a roll paper structure carrying sound absorption and multifunctional lightweight according to the present invention;
wherein: 1. a wide paper tape; 2. a narrow paper strap.
Detailed Description
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Various structural schematic diagrams according to the disclosed embodiments of the present invention are shown in the accompanying drawings. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
The invention provides a multifunctional light-weight roll paper structure for bearing sound absorption, which adopts paper common in ordinary life to construct a certain gap between curled paper in a cutting and curling mode. The presence of the slits facilitates the entry of sound waves into the structure, absorbing a large portion of the sound wave energy by friction of the paper surface with the air. Compared with a tightly curled paper structure, the sound absorption performance is greatly improved, and the sound absorption coefficient is more than 0.8 in a very wide frequency band range. And the formed structure has very excellent mechanical bearing capacity.
Referring to fig. 1 and 2, a paper roll structure with a bearing sound absorption function and a light weight comprises a wide paper strip 1 and a narrow paper strip 2, wherein the wide paper strip 1 and the narrow paper strip 2 are mutually overlapped and curled into a plurality of layers and spirally curled, and an air slit is formed between the adjacent wide paper strip 1 and the narrow paper strip 2.
Referring to fig. 3, first, a method for preparing a roll paper structure with a bearing sound absorption multifunctional light weight comprises the following steps:
(1) Cutting paper into two strips of wide strip 1 and narrow strip 2;
(2) The narrow paper strip 2 is stuck to the bottom of the wide paper strip 1 to form a paper strip with one thick side and one thin side;
(3) And (3) starting from one end, curling, and tightly attaching the thick side of the bottom of the wide paper strip 1 to obtain the multifunctional light roll paper structure with the bearing and sound absorption functions.
The curling shape of the structure is related to the processing mode, and the structure with different shapes can be prepared according to different engineering requirements by continuously folding, bending and other modes so as to adapt to different application scenes, especially irregular spaces in vehicles such as automobiles, trains and the like. The cross-sectional shape is circular, triangular, and petal-shaped as shown in fig. 4.
Example 1
In the embodiment, the wide paper strip 1 and the narrow paper strip 2 are rice paper, and the density is 0.323g/cm 3 The height of the wide paper strip is 50mm, and the width of the narrow paper strip is 10mm.
Example 2
In this example, the wide paper strip 1 and the narrow paper strip 2 are office A4 paper with a density of 0.646g/cm 3 The height of the wide paper strip is 50mm, and the width of the narrow paper strip is 10mm.
Example 3
In this example, the wide paper strip 1 and the narrow paper strip 2 are kraft paper with a density of 0.717g/cm 3 The height of the wide paper strip is 50mm, and the width of the narrow paper strip is 10mm.
The comparative example was a uniform slit-free roll paper structure of the same thickness as the example. To ensure objectivity of the control, the paper and examples were the same batch of product.
The sound absorption coefficients of the examples and comparative examples are given in comparison with the following, using the above materials and structural dimensions for preparation and acoustic test tests:
the sound absorption coefficient of the control group of the uniform slit-free roll paper was tested for the implementation structure between 0 and 6400 Hz.
Referring to fig. 5 (a-c), wherein the solid black line indicates the sound absorption coefficient of the equal thickness slit-free roll structure, and the dashed black line indicates the sound absorption coefficient of the slit roll structure. As can be seen from the figure, compared with the equal-thickness slit-free roll paper structure, the sound absorption structure provided by the invention has great improvement in 0-6400 Hz. The concrete steps are as follows:
in the embodiment 1, the sound absorption coefficient of the rice paper slit roll paper structure is more than 0.8 at 750-6400 Hz, and the overall average sound absorption coefficient is 0.91. The average sound absorption coefficient of the slit-free roll paper structure was 0.4.
In the office A4 paper tape slit roll paper structure in the embodiment 2, the sound absorption coefficient is more than 0.8 at 800-6400 Hz, and the overall average sound absorption coefficient is 0.89. The average sound absorption coefficient of the slit-free roll paper structure was 0.17.
In example 3, the sound absorption coefficient of the kraft paper tape slit roll structure is over 0.8 at 800-2500 Hz and 3100-6400 Hz, and the overall average sound absorption coefficient is 0.8. The average sound absorption coefficient of the slit-free roll paper structure was 0.25.
The results show that the sound absorption performance in a wide frequency range can be greatly improved for different types of paper. Among them, the sound absorption bandwidth was the widest with the rice paper of example 1, and the average sound absorption coefficient was the best.
The stress-displacement curves for the three examples were given using the above materials and structural dimensions for the preparation and quasi-static compression test tests, and compared as follows:
referring to fig. 5 (a-c), wherein the black dot line represents the quasi-static compression curve of example 1, the black dotted line represents the quasi-static compression curve of example 2, and the black solid line represents the quasi-static compression curve of example 3. Wherein, the compression strength of the rice paper is 0.5MPa. The compression strength of the A4 paper is 1.8MPa, and the compression strength of the kraft paper is 5.2MPa. Is a good bearing material.
From the above data, the technical effects achieved by the present invention are as follows:
1. the test result of the invention is that the sound absorption coefficient is above 0.8 at 750-6400 Hz, the average sound absorption coefficient is above 0.85, and the requirement of effective sound absorption in a wide frequency band is satisfied;
2. the material used by the structure is paper, so that the cost is low, and the material is easy to obtain;
3. the invention has simple sound absorption structure and convenient processing;
4. the invention provides that the compression strength of the sound absorption structure has great advantages compared with the conventional sound absorption material;
5. the mechanical and acoustic properties of the whole structure can be changed by changing the parameters of the roll paper structure and the types of the paper, so that the paper is suitable for the requirements of different occasions.
In summary, the presence of the slit in the roll paper structure with the multifunctional light weight for carrying sound absorption can greatly improve the sound absorption performance of the paper. The system has more adjustable parameters in the aspect of design, including structural parameters and paper types, and can be correspondingly adjusted according to the actual working condition requirements. Simple structure and easy manufacture.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A roll paper structure with bear sound absorption multi-functional lightweight, its characterized in that: the paper comprises a wide paper strip (1) and a narrow paper strip (2), wherein the wide paper strip (1) and the narrow paper strip (2) are mutually overlapped and curled into a plurality of layers and spirally curled, and air slits are formed between the adjacent wide paper strip (1) and the narrow paper strip (2).
2. The roll paper structure with load bearing sound absorbing multifunction and lightweight as claimed in claim 1, wherein: the wide paper strip (1) and the narrow paper strip (2) are rice paper, office paper or kraft paper, and the thickness is 0.05-0.5 mm.
3. The roll paper structure with load bearing sound absorbing multifunction and lightweight as claimed in claim 1, wherein: the width of the wide ceramic fiber paper strip (1) is 10-100 mm.
4. The roll paper structure with load bearing sound absorbing multifunction and lightweight as claimed in claim 1, wherein: the width of the narrow paper strip (2) is 1-10 mm.
5. The roll paper structure with load bearing sound absorbing multifunction and lightweight as claimed in claim 1, wherein: the cross section of the material is round, triangular and petal-shaped.
6. The roll paper structure with load bearing sound absorbing multifunction and lightweight as claimed in claim 1, wherein: the density of the wide paper strip (1) and the narrow paper strip (2) is 0.323-0.717g/cm 3 。
7. A method of making a roll paper structure having a load-bearing sound absorbing multifunctional weight reduction according to any one of claims 1 to 6, comprising the steps of:
(1) Cutting paper into two paper strips, namely a wide paper strip (1) and a narrow paper strip (2);
(2) The narrow paper strip (2) is stuck to the bottom of the wide paper strip (1) to form a paper strip with one thick side and one thin side;
(3) And (3) starting from one end, curling, and tightly attaching the thick side of the bottom of the wide paper strip (1) to obtain the multifunctional light-weight roll paper structure with the bearing and sound absorption functions.
CN202310478848.4A 2023-04-28 2023-04-28 Roll paper structure with bearing sound absorption function and light weight and preparation method Pending CN116462026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310478848.4A CN116462026A (en) 2023-04-28 2023-04-28 Roll paper structure with bearing sound absorption function and light weight and preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310478848.4A CN116462026A (en) 2023-04-28 2023-04-28 Roll paper structure with bearing sound absorption function and light weight and preparation method

Publications (1)

Publication Number Publication Date
CN116462026A true CN116462026A (en) 2023-07-21

Family

ID=87180655

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310478848.4A Pending CN116462026A (en) 2023-04-28 2023-04-28 Roll paper structure with bearing sound absorption function and light weight and preparation method

Country Status (1)

Country Link
CN (1) CN116462026A (en)

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