CN1140659C - Multilayer compounded non-woven fabric and its producing method and manufacturing apparatus - Google Patents
Multilayer compounded non-woven fabric and its producing method and manufacturing apparatus Download PDFInfo
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- CN1140659C CN1140659C CNB981204481A CN98120448A CN1140659C CN 1140659 C CN1140659 C CN 1140659C CN B981204481 A CNB981204481 A CN B981204481A CN 98120448 A CN98120448 A CN 98120448A CN 1140659 C CN1140659 C CN 1140659C
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Abstract
The present invention relates to multilayered composite non-woven fabric, a producing method thereof and a producing device thereof. The composite non-woven fabric is composed of more than two layers of fibre webs, wherein each layer of fibre web is made of composite fibre which is made up with at least of two ingredients. The producing device of the multilayered composite non-woven fabric comprises a layer collecting device and more than two groups of spinning devices. The spinning devices which can produce various kinds of composite fibre are on the upper of the layer collecting device and arranged front and back corresponding to the conveying direction of the layer connecting device. A fibre web layer is formed by stacking the composite fibre hierarchically on the layer collecting device. A heat treatment device or a water rolling device can be arranged on the end point in the conveying direction of the layer collecting device.
Description
[technical field]
The present invention relates to a kind of manufacturing installation and manufacture method thereof of multi-layer composite nonwoven fabrics.
[background technology]
As shown in Figure 1, it is the manufacture method of spinning glutinous nonwoven fabric in the past, mainly be that raw material is placed barrel, be delivered to by pipeline and spin in the mouth 11, be pumped into after the long fibre via spinning mouth, the collection layer is made stratum reticulare on a collection bed device 12 again, again with hot pressing wheel 13 in addition pressure roller become nonwoven fabric, but, this manufacture method has following shortcoming:
1. because each spins mouth 11 single outlet is only arranged, have the long fine of single composition and fusing point so only can make.
Because its fiber to be single fusing point long fine, and stratum reticulare is combined, so that flexibility and a sense of touch are not only had in its surface is not good by the roll-in mode.
A kind of nonwoven laminate was once disclosed in PCT international application case WO97/23676, it comprises and the second thermoplastic polymer non-woven layer one deck of heat bonding or two-layer first thermoplastic polymer film or non-woven layer mutually that wherein the second thermoplastic polymer non-woven layer comprises bicomponent fiber or long filament.In another PCT international application case WO97/31145, once disclosed a kind of device of producing supatex fabric, comprised by collection bed device that constitutes by a conveyer belt platform and the device for spinning above this collection bed device, established, and the annealing device of nonwoven fabric.But existing equally, the supatex fabric of this device production do not have flexibility and not good problem of sense of touch.
[summary of the invention]
The object of the present invention is to provide a kind ofly have high ventilative, high water pressure resistance, the hole is little and the manufacturing installation and the manufacture method thereof of the multi-layer composite nonwoven fabrics of the low effect of pressure reduction.
The manufacturing installation of a kind of multi-layer composite nonwoven fabrics provided by the invention, it includes the collection bed device that is made of a conveyer belt platform, it is characterized in that:
This collection bed device top be provided with the throughput direction of two groups of above corresponding above-mentioned collection bed devices and be arranged before and after make different types of composite fiber spinning device;
This different types of composite fibre is to be accumulated on this collection bed device with being level, and forms a fiber web layer;
The destination county of above-mentioned collection bed device throughput direction be provided with one the aforementioned fibers stratum reticulare by the time can divided composite fibre dash the water that is divided into the littler new fine fibre of diameter of section again in this fiber web layer and roll treating apparatus.
The manufacturing installation of described multi-layer composite nonwoven fabrics is characterized in that:
Having one group of composite fiber spinning device at least is to make the compound device for spinning that spins glutinous spinning fibre.
The manufacturing installation of described multi-layer composite nonwoven fabrics is characterized in that:
This is compound, and to spin glutinous spinning stratum reticulare be the continous mode long fiber, and its composition is respectively that compound polypropylene, polyethylene, polyester/polyethylene, polyester/polypropylene, polypropylene/low melting point polypropylene, polyester/low-melting point polyester, high-melting-point nylon/low melting point nylon compound spun glutinous spinning long fiber.
The manufacturing installation of described multi-layer composite nonwoven fabrics is characterized in that: having one group of composite fiber spinning device at least is to make the compound device for spinning that melts and sprays spinning fibre.
The manufacturing installation of described multi-layer composite nonwoven fabrics is characterized in that:
This compound spinning stratum reticulare that melts and sprays is to be composited by superfine fibre, and its composition is to be selected from compound polypropylene, polyethylene, polyester/polyethylene, polyester/polypropylene, polypropylene/low melting point polypropylene, polyester)/superfine fibre of low-melting point polyester, high-melting-point nylon/low melting point nylon.
The manufacturing installation of described multi-layer composite nonwoven fabrics is characterized in that:
This compound fiber diameter of spinning stratum reticulare that melts and sprays is below 5 μ m.
The present invention also provides a kind of manufacture method of multi-layer composite nonwoven fabrics, it is characterized in that it includes:
Step 1: extract composite spun fiber out by the device for spinning that the throughput direction along the collection bed device is provided with, this composite spun fiber also is stacked on the above-mentioned collection bed device, forms its level number and the same number of fiber web layer of device for spinning that starts; And
Step 2: the fiber web layer that above steps is formed rolls treating apparatus by a water, to be divided into the littler new fine fibre of diameter of section with can divided composite fibre in the above-mentioned fiber web layer dashing again.
The manufacture method of described multi-layer composite nonwoven fabrics is characterized in that:
The fiber web layer structure of this nonwoven fabric includes compound spinning at least and sticks the spinning stratum reticulare.
The manufacture method of described multi-layer composite nonwoven fabrics is characterized in that:
This is compound, and to spin glutinous spinning stratum reticulare be the continous mode long fiber, and its composition is respectively that compound polypropylene, polyethylene, polyester/polyethylene, polyester/polypropylene, polypropylene/low melting point polypropylene, polyester/low-melting point polyester, high-melting-point nylon/low melting point nylon compound spun glutinous spinning long fiber.
The manufacture method of described multi-layer composite nonwoven fabrics is characterized in that:
The fiber web layer structure of this nonwoven fabric includes a compound spinning stratum reticulare that melts and sprays at least.
The manufacture method of described multi-layer composite nonwoven fabrics is characterized in that:
This compound spinning stratum reticulare that melts and sprays can be to be composited by superfine fibre, and its composition is to be selected from compound polypropylene, polyethylene, polyester/polyethylene, polyester/polypropylene, polypropylene/low melting point polypropylene, polyester)/superfine fibre of low-melting point polyester, high-melting-point nylon/low melting point nylon.
The manufacture method of described multi-layer composite nonwoven fabrics is characterized in that:
This compound fiber diameter of spinning stratum reticulare that melts and sprays is below 5 μ m.
Take a broad view of above-mentioned, the manufacturing installation of multi-layer composite nonwoven fabrics of the present invention and the effect of manufacture method thereof mainly are: nonwoven fabric construct of the present invention is that the fiber web layer by multilayer is constituted, and each fiber web layer is made up of composite fibre, via hot rolling, hot blast or water roll processing again such as processing, the structure that makes composite fibre with cohere degree and mode changes, make the marriage relation of each fiber web layer more fine and close, so, its nonwoven fabric of making nonwoven fabric more before has more high ventilation effect, therefore higher water pressure resistance degree and lower pressure reduction are the filter materials that quite is suitable as filtered air and water; In addition, fiber web layer of the present invention has fluffy and soft characteristic equally, so be used for making surgical medical articles for use such as paper diaper waterproof barricade, panty liner substratum for waterproofing (amenities), operating coat robe, operating cap, mouth mask, also can satisfy the user to requirement comfortable, high water absorbing force.
Below in conjunction with drawings and Examples multi-layer composite nonwoven fabrics of the present invention and manufacture method thereof and device are elaborated:
[description of drawings]
Fig. 1 is the flow process and the device schematic diagram thereof of known manufacturing nonwoven fabric.
Fig. 2 is the schematic diagram of first preferred embodiment of manufacturing process of the present invention and device thereof.
Fig. 3 is the schematic diagram of second preferred embodiment of manufacturing process of the present invention and device thereof.
Fig. 4 to 7 is schematic cross-sections of made wherein several composite fibres of the present invention.
[specific embodiment]
At first as shown in Figure 2, multi-layer composite nonwoven fabrics manufacturing installation of the present invention includes a collection bed device 20, mainly be to constitute by a conveyer belt platform 21, above this collection bed device 20, be provided with corresponding its throughput direction and tandem device for spinning, wherein each group device for spinning can be made different types of composite fibre, and in this disclosed preferred embodiment, above-mentioned device for spinning then is made as one first in regular turn and spins glutinous device for spinning 30, first melts and sprays device for spinning 40, the second melts and sprays device for spinning 50 and one second and spins glutinous device for spinning 60.And these device for spinning optionally start, and then form the nonwoven fabric tissue of the different numbers of plies, and can detailed explanation for asking at this, make the understanding that obtains generality, all are that the state that is in the unlatching start describes so select all device for spinning for use.
First spin and include the different charging basket 31 that spins glutinous fibrous raw material of two splendid attires in the glutinous device for spinning 30 at this, 31 ', and individually through an extruder 32,32 ' and heated and be molten condition and extrude, these two kinds of being molten condition spin glutinous fibrous raw material and pass through the filter 33 in order to impurity screening after extruding, 33 ', relend by a certain amount of pumping 34, and delivered to jointly in the spinning box 35, promptly extract comprise two compositions compound out from this spinning box 35 and spin glutinous spinning fibre, this is compound to spin glutinous spinning fibre and is positioned at the cooling chamber 351 of spinning box below and cooling and shaping by one, extend air-flow 36 and import the normal temperature high speed winds at outlet 352 places of this cooling chamber lower end, so that this is compoundly spun glutinous spinning fibre and applies pull power, it is discharged from exporting 352, and downward stacked collection layer is on the forming web that advances 22 on the conveyer belt platform 21 of above-mentioned collection bed device 20, below this forming web 22 and be provided with an air intake device 23 that comprises windmill, this forming web 22 is applied downward air draught strength, make and above-mentionedly compoundly spin glutinous spinning fibre and can concentrate to the next part layer on this forming web 22, this is compound to spin glutinous spinning fibre and forms promptly that first (two composition) is compound to spin glutinous spinning stratum reticulare (BICOMPONENTSPUNBOND, " BS ").
Compound to spin the glutinous required raw material of spinning stratum reticulare can be respectively compound polypropylene (POLYPROPYLENE and constitute this, PP)/polyethylene (POLYETHYLENE, PE), polyester (POLYESTER, PET)/and polyethylene (PE), polyester (PET)/polypropylene (PP), polypropylene (PP)/low melting point polypropylene (COMPOUND POLYPROPYLENE COPP), polyester (PET)/low-melting point polyester (COMPOUND POLYESTER, COPET), high-melting-point nylon (NYLON)/low melting point nylon (NYLON) etc. or materials similar; And produce according to the structure of spinning box and pattern that the veriform pair of composition is compound to spin glutinous spinning stratum reticulare, stick the spinning stratum reticulare such as compound the spinning of two compositions of parallel type or sheath core pattern.
Melt and spray device for spinning 40 in first of centre, include the charging basket 41 of the different meltblown fibers raw material of two splendid attires, 41 ', and individually through an extruder 42,42 ' and heated and be molten condition and extrude, this is two kinds of meltblown fibers raw materials of molten condition and passes through the filter 43 in order to impurity screening after extruding, 43 ', relend by a certain amount of pumping 44 and delivered to jointly in the spinning box 45, promptly extract the compound spinning fibre that melts and sprays that comprises two compositions out from this spinning box 45, this is compound to melt and spray spinning fibre and is positioned at the cooling chamber of spinning box below and cooling and shaping by one, extend air-flow 46 and import the normal temperature high speed winds in the exit of this cooling chamber lower end, can apply pull power to this compound spinning fibre that melts and sprays, it is discharged from outlet, and downward stacked collection layer is on the forming web that advances 22 on the conveyer belt platform 21 of above-mentioned collection bed device 20, below this forming web 22 and be provided with an air intake device 23 that comprises windmill, this forming web 22 is applied downward air draught strength, the above-mentioned compound spinning fibre that melts and sprays can be concentrated to the next part layer this first previous compound spinning on the glutinous spinning stratum reticulare, spray spinning stratum reticulare (BICOMPONENT MELTBLOWN, " BM ") and form compound the melting of first (two composition).
What this was established in regular turn second melts and sprays the structure of device for spinning 50 and makes flowing mode and melt and spray device for spinning 40 disclosed structures and make flowing mode just like above-mentioned first, so seldom give unnecessary details at this; But, the compound spinning fibre that melts and sprays that it is discharged also piles up the collection layer downwards on this forming web 22 that conveying is advanced, the union layer sticks spinning stratum reticulare and this first compound melting and spraying on the spinning stratum reticulare this first compound spinning, and forms the compound spinning stratum reticulare that melts and sprays of second (two composition).
Make this and first compoundly melt and spray the spinning stratum reticulare and the second compound required material of spinning stratum reticulare that melts and sprays can be respectively compound polypropylene (PP)/polyethylene (PE), polyester (PET)/polyethylene (PE), polyester (PET)/polypropylene (PP), polypropylene (PP)/low melting point polypropylene (COPP), polyester (PET)/low-melting point polyester (COPET), high-melting-point nylon (NYLON)/low melting point nylon (NYLON) etc. or materials similar, and according to the structure of spinning box and pattern and produce the veriform pair of compound spinning stratum reticulare that melts and sprays of composition, such as the compound spinning stratum reticulare that melts and sprays of two compositions of parallel type or sheath core pattern; And the average diameter that these are compound to melt and spray spinning stratum reticulare fiber is all little than this compound fibre diameter that spins glutinous spinning stratum reticulare, and its diameter is below 5 μ m, and interfibrous arrangement is promptly more fine and close and even, so can obtain the lower fiber web layer of pressure reduction.
Melt and spray device for spinning 40 above-mentioned two, after 50, then then be provided with one second and spin glutinous device for spinning 60, and this second spins glutinous device for spinning 60 and first spins that to stick device for spinning 30 identical with this, its discharge compound spun glutinous spinning fibre and then piles up the collection layer downwards on this forming web 22, the union layer has collected layer on this forming web 22 the first compound glutinous spinning stratum reticulare, first that spins compoundly melts and sprays the spinning stratum reticulare and second compound the melting and spraying on the spinning stratum reticulare, and one deck second (two composition) is compound to spin glutinous spinning stratum reticulare and form.
And via above-mentioned manufacture method, its formed fiber web layer structure includes first in regular turn and compoundly spins that glutinous spinning stratum reticulare/first is compound to melt and spray that spinning stratum reticulare/second is compound to melt and spray that spinning stratum reticulare/second is compound spins glutinous spinning stratum reticulare, the fiber web layer of BS/BM/BM/BS structure just, each layer of fiber web layer of this multilayer itself all has the composite fibre of two kinds of compositions, be and can handle again and change connection relationship between composite fibre, to promote its characteristic via suitable; Below promptly enumerate two kinds of heat treatment processes that change above-mentioned fiber web layer structure:
(1) it is carried carry out heat by a hot pressing wheel 71 and cohere processing, the structure that each spinning stratum reticulare can be closely as one, and form the nonwoven fabric of BS/BM/BM/BS structure, and on a batching apparatus 90 coiling, finish the manufacturing of nonwoven fabric.
(2) it is carried by a hot bellows 72, the temperature of this hot bellows 72 is set in the compound high-melting fibre composition of glutinous spinning stratum reticulare (or the compound spinning stratum reticulare that melts and sprays of two composition) and the temperature between low-melting fiber composition fusing point spun of two compositions, make compound the spinning of two compositions stick low-melting fiber composition hot melt in the spinning stratum reticulare (or the compound spinning stratum reticulare that melts and sprays of two composition), promptly produce between fiber and bind, fiber heat is cohered and form the nonwoven fabric of BS/BM/BM/BS structure, and on a batching apparatus 90 coiling, finish the manufacturing of nonwoven fabric; Owing to after hot blast is handled, still include not molten fiber in the above-mentioned fiber web layer, can make fiber web layer have bulkiness, constitute high bulk, soft tissue in this nonwoven fabric.
Moreover, as shown in Figure 3, second preferred embodiment for multi-layer composite nonwoven fabrics manufacturing installation of the present invention, according to the disclosed structure of first preferred embodiment, above this collection bed device, and along its throughput direction and front and rear row is shown one first and spun glutinous device for spinning 30, first melts and sprays device for spinning 40, second melts and sprays device for spinning 50 and one second spins glutinous device for spinning 60 (for convenience of description, following embodiment, components identical is represented with identical label), and these device for spinning make flowing mode just like preceding taking off embodiment, also be to start all device for spinning simultaneously, so seldom give unnecessary details, and also formed the fiber web layer of BS/BM/BM/BS structure this moment; The feature of the composite fibre of making via said apparatus and method is shown in Fig. 4 to 7, it is the schematic cross-section of this composite fibre, the composite fibre that wherein constitutes above-mentioned fiber web layer has and partly belongs to the severability fiber, its also can borrow water to roll to handle again and again row be divided into thinner new composite fibre.Therefore, be provided with a water at the destination county of above-mentioned collection bed device 20 throughput directions and roll treating apparatus 80, be divided into the littler new fine fibre of diameter of section with can divided composite fibre in the above-mentioned fiber web layer dashing again, thereby the staggered binding of the level between the fiber is more evenly careful, and the fiber web layer of each level also can vertical interlaced, makes the nonwoven fabric that is made of this fiber web layer have the speciality of highly-breathable, high water pressure resistance.
Take a broad view of above-mentioned, nonwoven fabric construct of the present invention is that the fiber web layer by multilayer is constituted, and each fiber web layer is made up of composite fibre, roll processing again such as processing via hot rolling, hot blast or water, the structure that makes composite fibre with cohere degree and mode changes, make the marriage relation of each fiber web layer more fine and close, so, its nonwoven fabric of making nonwoven fabric more before has more, and high ventilation effect, higher water pressure resistance degree reach lower pressure reduction, so are the filter materials that quite is suitable as filtered air and water; In addition, fiber web layer of the present invention has fluffy and soft characteristic equally, so be used for making surgical medical articles for use such as paper diaper waterproof barricade, panty liner substratum for waterproofing (amenities), operating coat robe, operating cap, mouth mask, also can satisfy the user to requirement comfortable, high water absorbing force.
Claims (12)
1. the manufacturing installation of a multi-layer composite nonwoven fabrics, it includes the collection bed device that is made of a conveyer belt platform, and it is characterized in that:
This collection bed device top be provided with the throughput direction of two groups of above corresponding above-mentioned collection bed devices and be arranged before and after make different types of composite fiber spinning device;
This different types of composite fibre is to be accumulated on this collection bed device with being level, and forms a fiber web layer;
The destination county of above-mentioned collection bed device throughput direction be provided with one the aforementioned fibers stratum reticulare by the time can divided composite fibre dash the water that is divided into the littler new fine fibre of diameter of section again in this fiber web layer and roll treating apparatus.
2. the manufacturing installation of multi-layer composite nonwoven fabrics as claimed in claim 1 is characterized in that:
Having one group of composite fiber spinning device at least is to make the compound device for spinning that spins glutinous spinning fibre.
3. the manufacturing installation of multi-layer composite nonwoven fabrics as claimed in claim 2 is characterized in that:
This is compound, and to spin glutinous spinning stratum reticulare be the continous mode long fiber, and its composition is respectively that compound polypropylene, polyethylene, polyester/polyethylene, polyester/polypropylene, polypropylene/low melting point polypropylene, polyester/low-melting point polyester, high-melting-point nylon/low melting point nylon compound spun glutinous spinning long fiber.
4. the manufacturing installation of multi-layer composite nonwoven fabrics as claimed in claim 1 is characterized in that: having one group of composite fiber spinning device at least is to make the compound device for spinning that melts and sprays spinning fibre.
5. the manufacturing installation of multi-layer composite nonwoven fabrics as claimed in claim 4 is characterized in that:
This compound spinning stratum reticulare that melts and sprays is to be composited by superfine fibre, and its composition is to be selected from compound polypropylene, polyethylene, polyester/polyethylene, polyester/polypropylene, polypropylene/low melting point polypropylene, polyester)/superfine fibre of low-melting point polyester, high-melting-point nylon/low melting point nylon.
6. the manufacturing installation of multi-layer composite nonwoven fabrics as claimed in claim 5 is characterized in that:
This compound fiber diameter of spinning stratum reticulare that melts and sprays is below 5 μ m.
7. the manufacture method of a multi-layer composite nonwoven fabrics is characterized in that it includes:
Step 1: extract composite spun fiber out by the device for spinning that the throughput direction along the collection bed device is provided with, this composite spun fiber also is stacked on the above-mentioned collection bed device, forms its level number and the same number of fiber web layer of device for spinning that starts; And
Step 2: the fiber web layer that above steps is formed rolls treating apparatus by a water, to be divided into the littler new fine fibre of diameter of section with can divided composite fibre in the above-mentioned fiber web layer dashing again.
8. the manufacture method of multi-layer composite nonwoven fabrics as claimed in claim 7 is characterized in that:
The fiber web layer structure of this nonwoven fabric includes compound spinning at least and sticks the spinning stratum reticulare.
9. the manufacture method of multi-layer composite nonwoven fabrics as claimed in claim 8 is characterized in that:
This is compound, and to spin glutinous spinning stratum reticulare be the continous mode long fiber, and its composition is respectively that compound polypropylene, polyethylene, polyester/polyethylene, polyester/polypropylene, polypropylene/low melting point polypropylene, polyester/low-melting point polyester, high-melting-point nylon/low melting point nylon compound spun glutinous spinning long fiber.
10. the manufacture method of multi-layer composite nonwoven fabrics as claimed in claim 7 is characterized in that:
The fiber web layer structure of this nonwoven fabric includes a compound spinning stratum reticulare that melts and sprays at least.
11. the manufacture method of multi-layer composite nonwoven fabrics as claimed in claim 10 is characterized in that:
This compound spinning stratum reticulare that melts and sprays is to be composited by superfine fibre, and its composition is to be selected from compound polypropylene, polyethylene, polyester/polyethylene, polyester/polypropylene, polypropylene/low melting point polypropylene, polyester)/superfine fibre of low-melting point polyester, high-melting-point nylon/low melting point nylon.
12. the manufacture method of multi-layer composite nonwoven fabrics as claimed in claim 11 is characterized in that:
This compound fiber diameter of spinning stratum reticulare that melts and sprays is below 5 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB981204481A CN1140659C (en) | 1998-10-20 | 1998-10-20 | Multilayer compounded non-woven fabric and its producing method and manufacturing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB981204481A CN1140659C (en) | 1998-10-20 | 1998-10-20 | Multilayer compounded non-woven fabric and its producing method and manufacturing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1251397A CN1251397A (en) | 2000-04-26 |
| CN1140659C true CN1140659C (en) | 2004-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981204481A Expired - Lifetime CN1140659C (en) | 1998-10-20 | 1998-10-20 | Multilayer compounded non-woven fabric and its producing method and manufacturing apparatus |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6743273B2 (en) | 2000-09-05 | 2004-06-01 | Donaldson Company, Inc. | Polymer, polymer microfiber, polymer nanofiber and applications including filter structures |
| CN100357509C (en) * | 2003-09-04 | 2007-12-26 | 高雨声 | Process for production of multifunctional composite bicomponent fiber spunbond nonwoven fabrics |
| CN103173936B (en) * | 2011-12-23 | 2016-07-06 | 东丽纤维研究所（中国）有限公司 | A kind of production method of high-strength hot bonded nonwoven |
| KR101448385B1 (en) * | 2013-05-21 | 2014-10-13 | 도레이첨단소재 주식회사 | Composite non-woven fabric comprising a composition derived from a plant and manufacturing method thereof |
| CN104452112A (en) * | 2014-11-22 | 2015-03-25 | 赵文龙 | Non-woven fabric production device |
| CN107022842A (en) * | 2017-05-08 | 2017-08-08 | 大连华纶无纺设备工程有限公司 | Double-mold-head is combined interlacing two-component spunbonded water-jet bonding non-woven fabrics production equipment and production technology |
| CN109835025B (en) * | 2017-11-24 | 2022-04-12 | 浙江工业职业技术学院 | Preparation method of composite non-woven fabric air filtering material |
| CN108442040A (en) * | 2018-03-13 | 2018-08-24 | 福建雷尔新材料有限公司 | A kind of preparation method of superfine fibre hot wind compound nonwoven cloth |
| CN109594200B (en) * | 2019-01-30 | 2019-10-15 | 山东俊富非织造材料有限公司 | A kind of high-barrier spinning mixing melting mould assembly ventilative new material, preparation method and applications |
| CN110386297B (en) * | 2019-07-31 | 2020-06-02 | 华中科技大学 | Automatic arrangement machine for strip caps |
| KR20230010654A (en) * | 2020-04-20 | 2023-01-19 | 미쉘 서쿠어 | Multi-layered textile as/for durable washable high-performance filtration media and assembly method thereof |
-
1998
- 1998-10-20 CN CNB981204481A patent/CN1140659C/en not_active Expired - Lifetime
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| CN1251397A (en) | 2000-04-26 |
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