CN107584853B - Preparation method of sound-absorbing cotton - Google Patents
Preparation method of sound-absorbing cotton Download PDFInfo
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- CN107584853B CN107584853B CN201710648432.7A CN201710648432A CN107584853B CN 107584853 B CN107584853 B CN 107584853B CN 201710648432 A CN201710648432 A CN 201710648432A CN 107584853 B CN107584853 B CN 107584853B
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- 229920003023 plastic Polymers 0.000 claims description 29
- 239000004033 plastic Substances 0.000 claims description 29
- 239000002023 wood Substances 0.000 claims description 24
- 150000002148 esters Chemical class 0.000 claims description 21
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 21
- 239000004626 polylactic acid Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 14
- 239000004743 Polypropylene Substances 0.000 claims description 13
- -1 polypropylene Polymers 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 10
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- 238000003825 pressing Methods 0.000 claims description 9
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
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- 238000009987 spinning Methods 0.000 claims description 2
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- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
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- 241000195493 Cryptophyta Species 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
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- 229920000515 polycarbonate Polymers 0.000 description 3
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- 229920002379 silicone rubber Polymers 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
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Abstract
The invention discloses a preparation method of sound-absorbing cotton, wherein a sound-absorbing cotton main body comprises a square groove, a circular through hole, a trapezoidal groove, a double-sided edge seal, a sound-absorbing middle layer, a sound-absorbing outer layer, a sound-absorbing inner layer, sound-absorbing through holes and sound-absorbing mesh holes, the lower part of the sound-absorbing cotton main body is provided with the square groove on the right side, the central position of the upper part of the sound-absorbing cotton main body is provided with the trapezoidal groove, the circular through hole is arranged in the middle of the sound-absorbing cotton main body, the sound-absorbing inner layer is designed in the center of the internal structure of the sound-absorbing cotton main body, the sound-absorbing middle layer is wrapped at two ends of the sound-absorbing inner layer, and the sound-absorbing outer layer is wrapped at two ends of the sound-absorbing middle layer. The environment-friendly material is used, so that the pollution is reduced, the environment-friendly effect is improved, and the recycling of the sound-absorbing cotton is facilitated.
Description
Technical Field
The invention relates to the technical field of sound-absorbing materials, in particular to a preparation method of sound-absorbing cotton.
Background
With the progress of society and the continuous improvement of the consumption level of people, customers demand more and more for the aspects of sound absorption and insulation, light weight, comfort and the like of automobiles. The traditional PET (polyethylene terephthalate)/PP (polypropylene) double-component sound-absorbing cotton is widely applied to the fields of automobile sound insulation and noise reduction, and the NVH (noise, vibration and harshness) performance of the whole automobile is greatly improved. However, the PET polyester fiber is a chemical synthetic fiber with high melting point (above 250 ℃) and difficult degradation, so that the temperature of the edge sealing die of the traditional PET/PP double-component sound-absorbing cotton product is high. Meanwhile, PET/PP double-component sound-absorbing cotton leftover material is difficult to recycle.
The existing silencing felt cotton for the automobile has the advantages of silencing, fire prevention, shock prevention, heat insulation and the like, but the silencing effect cannot achieve the expected effect, the shock prevention and heat insulation effects are not good, and the hardness is insufficient, so that the service life of the product is directly influenced, the radiation around the existing automobile is large, and the damage to a human body is easily caused.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation method of sound-absorbing cotton.
In order to realize the purpose of the invention, the adopted technical scheme is as follows: a method for preparing sound-absorbing cotton comprises a sound-absorbing cotton main body (1), and the method for preparing the sound-absorbing cotton comprises the following steps:
the first step is as follows: putting the polylactic acid ester plastic into a spray melting machine for heating and spraying to prepare polylactic acid ester plastic fibers with the diameter of 2-5 mu m, building the polylactic acid ester plastic fibers into a porous irregular plate-shaped structure with sound-absorbing reticular pores, pressing and forming the porous irregular plate-shaped structure into a sound-absorbing inner layer with a plate-shaped structure, and punching sound-absorbing through holes on the sound-absorbing inner layer by using a punching machine;
the second step is that: putting light wood shaving sawdust into a mold, pressing the wood shaving sawdust into a soft sound-absorbing middle layer with a micropore strip-shaped structure by micro force, and bonding the strip-shaped sound-absorbing middle layer on two end faces of the sound-absorbing inner layer by using an adhesive;
the third step: respectively bonding polypropylene plastic cloth of the upper sound-absorbing outer layer on the upper end surface and the lower end surface of the sound-absorbing middle layer, and performing staggered edge sealing by using a steel plate or copper plate blunt knife with the thickness of 1mm on a folding edge sealing die;
the fourth step: after the cutter height is set, the sound-absorbing cotton main body subjected to edge sealing is subjected to 180-degree staggered cutter process treatment by using the cutter, so that complete sound-absorbing cotton is obtained.
Preferably, the sound-absorbing cotton main body comprises a square groove, a circular through hole, a trapezoidal groove, a double-sided edge seal, a sound-absorbing middle layer, a sound-absorbing outer layer, a sound-absorbing inner layer, a sound-absorbing through hole and a sound-absorbing mesh hole, wherein the square groove is formed on the right side of the lower part of the sound-absorbing cotton main body, the trapezoidal groove is formed in the central position of the upper part of the sound-absorbing cotton main body, the circular through hole is formed in the middle of the sound-absorbing cotton main body, the sound-absorbing inner layer is designed in the central structure of the sound-absorbing cotton main body, the sound-absorbing middle layer is wrapped at; the range upon range of the cotton main part of sound absorption is arranged the design and is for inhaling the sound skin, inhale the sound middle level, inhale the sound inlayer, inhale the sound middle level and inhale the sound skin, piles up from the top down in proper order.
Preferably, the sound-absorbing outer layer is designed to be a polypropylene plastic cloth layer, and the thickness of the polypropylene plastic cloth layer is designed to be 0.5-1.0 mm; the sound-absorbing middle layer is designed to be a wood shaving wood chip layer, the thickness of the wood shaving wood chip layer is designed to be 2-3 mm, and the wood shaving wood chip layer is a soft strip structure with holes; the sound-absorbing inner layer is designed to be a polylactic acid ester plastic fiber layer, the thickness of the polylactic acid ester plastic fiber layer is designed to be 2-5 mm, and the polylactic acid ester plastic fiber layer is pressed to be of a plate-shaped structure.
Preferably, inhale the inside sound through-hole that is provided with of sound inlayer, inhale the diameter design of sound through-hole and be 2 ~ 3mm, monolithic inhales the sound inlayer and is provided with 5 ~ 10 sound through-holes of inhaling.
Preferably, sound-absorbing mesh holes are formed in the sound-absorbing inner layer and are arranged among the sound-absorbing through holes, the diameter of each sound-absorbing mesh hole is 2-10 microns, and the sound-absorbing mesh holes are communicated with one another.
Preferably, the back of the sound-absorbing cotton main body is compounded with 2-3 double-sided adhesive tapes.
The invention has the beneficial effects that: the sound-absorbing cotton has the advantages that the sound-absorbing cotton is light in weight, good in sound-absorbing effect and performance, strong in decoration performance and convenient to process, the blunt cutters are used for staggering the double-sided edge sealing, the attractive feeling of the sound-absorbing cotton is improved, the processing working efficiency is improved, the sound-absorbing cotton is made of green materials, the pollution is reduced, the environment-friendly effect is improved, the sound-absorbing cotton is convenient to recycle, the market needs are met, and the process design and production are optimized.
Drawings
Fig. 1 is a schematic view of the structure of the sound-absorbing cotton of the present invention.
FIG. 2 is a schematic view of the inner layer structure of the sound-absorbing cotton of the present invention.
In the figure: 1. a sound absorbing cotton main body; 2. a square groove; 3. a circular through hole; 4. a trapezoidal groove; 5. sealing edges on two sides; 6. a sound-absorbing middle layer; 7. an outer sound-absorbing layer; 8. a sound absorbing inner layer; 9. a sound-absorbing through hole; 10 sound absorbing mesh holes.
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.
Example 1
Referring to fig. 1-2, a sound-absorbing cotton, wherein a sound-absorbing cotton main body 1 includes a square groove 2, a circular through hole 3, a trapezoidal groove 4, a double-sided edge seal 5, a sound-absorbing middle layer 6, a sound-absorbing outer layer 7, a sound-absorbing inner layer 8, a sound-absorbing through hole 9 and a sound-absorbing mesh hole 10, the lower part of the sound-absorbing cotton main body 1 is provided with the square groove 2 on the right side, the upper central position of the sound-absorbing cotton main body 1 is provided with the trapezoidal groove 4, the middle part of the sound-absorbing cotton main body 1 is provided with the circular through hole 3, the sound-absorbing inner layer 8 is designed in the central part of the sound-absorbing cotton main body 1, two ends of the sound-absorbing inner layer 8 are wrapped; inhale the range upon range of cotton main part 1 and arrange the design for inhaling sound skin 7, inhale sound middle level 6, inhale sound inlayer 8, inhale sound middle level 6 and inhale sound skin 7, pile up from the top down in proper order.
Further, the sound-absorbing outer layer 7 is designed to be a polypropylene plastic cloth layer, and the thickness of the polypropylene plastic cloth layer is designed to be 0.5-1.0 mm; the sound-absorbing middle layer 6 is designed to be a wood shaving wood chip layer, the thickness of the wood shaving wood chip layer is designed to be 2-3 mm, and the wood shaving wood chip layer is a soft strip structure with holes; the sound-absorbing inner layer 8 is designed to be a polylactic acid ester plastic fiber layer, the thickness of the polylactic acid ester plastic fiber layer is designed to be 2-5 mm, and the polylactic acid ester plastic fiber layer is pressed to be of a plate-shaped structure.
Further, inhale inside the 8 inner portions of inhaling the sound and be provided with and inhale sound through-hole 9, inhale the diameter design of sound through-hole 9 and be 2 ~ 3mm, monolithic inhale and be provided with 5 ~ 10 in the 8 inner portions of inhaling the sound and inhale sound through-holes 9.
Furthermore, sound-absorbing mesh holes 10 are arranged between the sound-absorbing through holes 9 in the sound-absorbing inner layer 8, the diameter of the sound-absorbing mesh holes 10 is designed to be 2-10 μm, and the sound-absorbing mesh holes 10 are communicated with each other.
Furthermore, tree-shaped connecting holes are formed in the core layer, the diameter of each tree-shaped connecting hole is 2-10 mu m, and the tree-shaped connecting holes are communicated with one another.
Further, 2-3 double faced adhesive tapes are compounded on the back surface of the sound-absorbing cotton main body 1.
The invention provides a technical scheme that: a method for preparing sound-absorbing cotton comprises the following steps:
the first step is as follows: putting the polylactic acid ester plastic into a spray melting machine for heating and spinning to prepare polylactic acid ester plastic fibers with the diameter of 2-5 mu m, building the polylactic acid ester plastic fibers into a porous irregular plate-shaped structure with sound-absorbing reticular holes 10, pressing the porous irregular plate-shaped structure into a sound-absorbing inner layer 8 with a plate-shaped structure, and punching the sound-absorbing inner layer 8 out of sound-absorbing through holes 9 by using a punching machine;
the second step is that: putting light wood shaving sawdust into a mold, pressing the wood shaving sawdust into a soft sound-absorbing middle layer 6 with a micropore strip-shaped structure by micro force, and bonding the strip-shaped sound-absorbing middle layer 6 on two end faces of a sound-absorbing inner layer 8 by using an adhesive;
the third step: the upper end surface and the lower end surface of the sound-absorbing middle layer 6 are respectively adhered with the polypropylene plastic cloth of the sound-absorbing outer layer 7, and staggered edge sealing is carried out by using a steel plate or copper plate blunt knife with the thickness of 1mm on a folding edge sealing die;
the fourth step: after the cutter height is set, the sound-absorbing cotton main body 1 subjected to edge sealing is subjected to 180-degree staggered cutter process treatment by using a cutter, so that complete sound-absorbing cotton is obtained.
Example 2
The present embodiment is different from embodiment 1 in that the sound absorbing middle layer 6 is made by uniformly laying and pressing algae plant fibers.
The algae plants are dried by squeezing and drying to obtain white algae plant fibers, and the algae plant fibers and the wood shavings have the same excellent sound absorption function.
Example 3
The present example is different from example 1 in that the sound-absorbing inner layer 8 is made of a silicon rubber foam material.
The silicon rubber plastic is dissolved at high temperature into liquid, inert gas is introduced into the liquid, the liquid is rapidly cooled, the interior of the liquid contains a bubble structure, and the silicon rubber foam plastic is obtained and has the same excellent sound absorption function as the polylactic acid ester fiber.
Example 4
The present example is different from example 1 in that the sound-absorbing inner layer 8 is made of a blend of a polylactic acid ester fiber and a polycarbonate fiber.
The polylactic acid ester fiber and the polycarbonate fiber have the same excellent sound absorption function as the polycarbonate fiber or the plant fiber.
Example 5
The difference between the embodiment and the embodiment 1 is that the sound-absorbing middle layer 6 is made by uniformly laying mine asbestos fiber and pressing and molding.
Melting the stone ore and then spraying the stone ore through a high-temperature spraying and melting machine to obtain white mine asbestos fiber, wherein the mine asbestos fiber has the fireproof and high-temperature resistant performance, and the mine asbestos fiber layer and the wood shaving sawdust layer have the same excellent sound absorption function.
Example 6
The difference between the embodiment and the embodiment 1 is that the sound-absorbing middle layer 6 is prepared by uniformly laying and pressing soft silica gel fibers with the diameter of 2-5 mu m.
Melting the soft silica gel and then spraying the soft silica gel by a high-temperature spray-melting machine to obtain white soft silica gel fibers with the diameter of 2-5 mu m, wherein the soft silica gel fiber layer with the diameter of 2-5 mu m has the same excellent sound absorption function as the wood shaving sawdust layer.
According to the sound-absorbing cotton, the raw materials are reasonably selected and proportioned, the prepared sound-absorbing cotton is light in weight, good in sound-absorbing effect and performance, strong in decoration performance and convenient to process, the blunt knife is used for dislocation of double-sided edge sealing, the attractive feeling of the sound-absorbing cotton is improved, the processing working efficiency is improved, green materials are used, pollution is reduced, the environment-friendly effect is improved, the sound-absorbing cotton is convenient to recycle, the market needs are met, and the process design and production are optimized.
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 (6)
1. A preparation method of sound-absorbing cotton is characterized by comprising the following steps: the sound-absorbing cotton comprises a sound-absorbing cotton main body (1), and the preparation method of the sound-absorbing cotton comprises the following steps:
the first step is as follows: putting the polylactic acid ester plastic into a spray melting machine for heating and spinning to prepare a polylactic acid ester plastic fiber with the diameter of 2-5 mu m, building the polylactic acid ester plastic fiber into a porous irregular plate-shaped structure with sound-absorbing reticular holes (10), pressing and forming the porous irregular plate-shaped structure into a sound-absorbing inner layer (8) with a plate-shaped structure, and punching the sound-absorbing inner layer (8) out of sound-absorbing through holes (9) by using a punching machine;
the second step is that: putting light wood shaving sawdust into a mold, pressing the wood shaving sawdust into a soft sound-absorbing middle layer (6) with a micropore strip-shaped structure by micro force, and bonding the strip-shaped sound-absorbing middle layer (6) on two end faces of a sound-absorbing inner layer (8) by using an adhesive;
the third step: polypropylene plastic cloth of the sound-absorbing outer layer (7) is respectively bonded on the upper end surface and the lower end surface of the sound-absorbing middle layer (6), and staggered edge sealing is carried out by using a steel plate or copper plate blunt knife with the thickness of 1mm on a folding knife sealing die;
the fourth step: after the cutter height is set, the sound-absorbing cotton main body (1) subjected to edge sealing is subjected to 180-degree staggered cutter process treatment by using a cutter, so that complete sound-absorbing cotton is obtained.
2. The method for preparing the sound-absorbing cotton according to claim 1, wherein the method comprises the following steps: the sound-absorbing cotton main body (1) comprises square grooves (2), circular through holes (3), trapezoidal grooves (4), double-sided sealing edges (5), a sound-absorbing middle layer (6), a sound-absorbing outer layer (7), a sound-absorbing inner layer (8), sound-absorbing through holes (9) and sound-absorbing mesh holes (10), wherein the square grooves (2) are formed in the lower right side of the sound-absorbing cotton main body (1), the trapezoidal grooves (4) are formed in the central position of the upper portion of the sound-absorbing cotton main body (1), the circular through holes (3) are formed in the middle of the sound-absorbing cotton main body (1), the sound-absorbing inner layer (8) is designed in the central position of the inner structure of the sound-absorbing cotton main body (1), the sound-absorbing middle layer (6) is wrapped at the two ends of the sound-absorbing middle layer (; the range upon range of the cotton main part of sound absorption (1) is arranged the design and is inhaled outer (7), inhale sound middle level (6), inhale sound inlayer (8), inhale sound middle level (6) and inhale sound outer (7), piles up from the top down in proper order.
3. The method for preparing the sound-absorbing cotton according to claim 1, wherein the method comprises the following steps: the sound-absorbing outer layer (7) is designed to be a polypropylene plastic cloth layer, and the thickness of the polypropylene plastic cloth layer is designed to be 0.5-1.0 mm; the sound-absorbing middle layer (6) is designed to be a wood shaving wood chip layer, the thickness of the wood shaving wood chip layer is designed to be 2-3 mm, and the wood shaving wood chip layer is a loose strip-shaped structure with holes; the sound-absorbing inner layer (8) is designed to be a polylactic acid ester plastic fiber layer, the thickness of the polylactic acid ester plastic fiber layer is designed to be 2-5 mm, and the polylactic acid ester plastic fiber layer is pressed to be of a plate-shaped structure.
4. The method for preparing the sound-absorbing cotton according to claim 1, wherein the method comprises the following steps: inhale inside being provided with of sound inlayer (8) and inhaling sound through-hole (9), the diameter design of inhaling sound through-hole (9) is 2 ~ 3mm, is provided with 5 ~ 10 in the monolithic sound inlayer (8) of inhaling and inhales sound through-hole (9).
5. The method for preparing the sound-absorbing cotton according to claim 1, wherein the method comprises the following steps: the sound-absorbing inner layer (8) is internally provided with sound-absorbing mesh holes (10) between the sound-absorbing through holes (9), the diameters of the sound-absorbing mesh holes (10) are designed to be 2-10 mu m, and the sound-absorbing mesh holes (10) are communicated with each other.
6. The method for preparing the sound-absorbing cotton according to claim 1, wherein the method comprises the following steps: the back of the sound-absorbing cotton main body (1) is compounded with 2-3 double-sided adhesive tapes.
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| CN201710648432.7A CN107584853B (en) | 2017-08-01 | 2017-08-01 | Preparation method of sound-absorbing cotton |
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| CN201710648432.7A CN107584853B (en) | 2017-08-01 | 2017-08-01 | Preparation method of sound-absorbing cotton |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105442185B (en) * | 2009-03-31 | 2018-01-16 | 3M创新有限公司 | Non-woven fibre web of dimensionally stable and production and preparation method thereof |
| CN104120962A (en) * | 2014-08-15 | 2014-10-29 | 无锡联创薄板有限公司 | Thin plate for sliding door |
| CN204124079U (en) * | 2014-09-26 | 2015-01-28 | 侯俊书 | Sound-proof material |
| CN204826275U (en) * | 2015-07-17 | 2015-12-02 | 浙江舒福家门业有限公司 | Sound insulation board |
| CN205256224U (en) * | 2015-11-04 | 2016-05-25 | 浙江乾丰汽车零部件有限公司 | It is thermal -insulated cotton that sound is inhaled to car |
| CN205149077U (en) * | 2015-11-04 | 2016-04-13 | 浙江乾丰汽车零部件有限公司 | Sound absorbing cotton |
| CN205800987U (en) * | 2016-07-20 | 2016-12-14 | 亿得宝科技发展有限公司 | A kind of automobile-used complex sound insulation is cotton |
| CN106218170B (en) * | 2016-07-26 | 2019-01-01 | 广西德福特科技有限公司 | A kind of automobile-used two-component acoustical cotton and preparation method thereof |
| CN206344516U (en) * | 2016-11-27 | 2017-07-21 | 江苏三弦建筑声学系统有限公司 | A kind of novel sound insulating sheet material |
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