CN101880942B - Non-woven composite material and preparation method thereof - Google Patents
Non-woven composite material and preparation method thereof Download PDFInfo
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- CN101880942B CN101880942B CN2010101976215A CN201010197621A CN101880942B CN 101880942 B CN101880942 B CN 101880942B CN 2010101976215 A CN2010101976215 A CN 2010101976215A CN 201010197621 A CN201010197621 A CN 201010197621A CN 101880942 B CN101880942 B CN 101880942B
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Abstract
The invention discloses a non-woven composite material and a preparation method thereof. The composite material is characterized in that the composite material is in a sandwich structure in which an upper layer and a lower layer are provided with melt-blown fiber nets or melt-blown nonwovens, the middle layer is provided with an air-laid fiber net or air-laid nonwoven, and the effective adhesion of the air-laid fiber net and between the fiber net layers or the effective adhesion of the air-laid nonwoven and between the nonwoven layers is caused by the fusion adhesion of low melting point fiber in the air-laid fiber net or air-laid nonwoven; the structures of the upper layer and the lower layer of melt-blown fiber nets are identical or different; and the mass fraction of the low melting point fiber in the air-laid fiber net or air-laid nonwoven is 10 to 20%. The preparation method of the non-woven composite material comprises an online preparation method and an offline preparation method.
Description
Technical field
The present invention relates to composite technology, particularly relate to a kind of adopt that melt-blowing nonwoven production technology and air lay method nonwoven manufacturing technique prepare have novel non-woven composite of sandwich structure and preparation method thereof.
Background technology
The non-weaving cloth mode of production is varied, the nonwoven product of being produced is of a great variety, each nonwoven product all has its particular performances, and the non-weaving cloth product is compound, especially different nonwoven product compound, can make nonwoven product after compound on the basis that has each the non-weaving cloth performance before compound concurrently, give the new performance of nonwoven product after compound.Thereby, in recent years, countries in the world are all at combination process and the product of studying non-weaving cloth, and applied for corresponding patent: for example, the TaiWan, China patent gazette has been reported a kind of composite non-weaving cloth that is composited by spun-bonded non-woven and melt-blowing nonwoven No. 375664, this composite non-weaving cloth comprises the stratum reticulare/spunbond web layer that melts and sprays more than spunbond web layer/one deck in regular turn, and this composite non-weaving cloth has preferable effect aspect barrier; Chinese patent CN1323574A has reported a kind of composite non-weaving cloth, comprises three-layer network layer at least, and wherein one deck stratum reticulare is the air lay stratum reticulare at least, and one deck stratum reticulare is selected from spunbond web layer or melts and sprays stratum reticulare at least; U.S. Pat 4196245 has been reported and a kind ofly will have been melted and sprayed stratum reticulare and other stratum reticulare, carried out the compound method for preparing the composite non-weaving cloth product as spunbond web layer, wet-laying stratum reticulare, carding stratum reticulare, air lay stratum reticulare etc.; U.S. Pat 7600813 reported adopt spunbond-melt and spray-spunbond complex technique makes the method for SMS non-weaving cloth, this product is used for the cover for seat of automobile temporary protection; Japan Patent JP 2006-185381 has then reported a kind of that spun-bonded non-woven, melt-blowing nonwoven and air lay method non-weaving cloth is compound, produces the processing Technique for Composite Nonwovens that is used for gas filtration.Though foregoing invention relates to the complex technique of melt-blowing nonwoven and air-laid nonwoven fabric, but in the scope of applicant's retrieval, do not see as yet with two-layer meltblown fibers network folder one deck air lay fiber web, or two-layer melt-blown non-woven cloth clamp one deck air-laid nonwoven fabric, and direct compound bibliographical information.
Summary of the invention
At the deficiencies in the prior art, the technical problem that quasi-solution of the present invention is determined is that a kind of non-woven composite and preparation method thereof is provided.This composite has sandwich structure, and two-layer up and down is meltblown fiber web, and the intermediate layer is the air lay fiber web, or two-layer up and down for melt-blowing nonwoven, intermediate layer be air-laid nonwoven fabric.This non-woven composite can give non-woven composite new function by selecting different composite beds for use.This preparation method makes full use of melt-blown non-woven material and air lay nonwoven material good strainability separately, adopt the unique design of sandwich structure, realize filtering step by step, and give the splendid strainability of novel non-woven composite of prepared sandwich structure, and technology is simple, is suitable for industrial applications.
The technical scheme that the present invention solves described composite technology problem is, design a kind of non-woven composite, it is characterized in that this composite is upper and lower two-layer be meltblown fiber web or melt-blowing nonwoven, the intermediate layer is the sandwich structure of air lay fiber web or air-laid nonwoven fabric, and effectively bonding or air-laid nonwoven fabric itself between air lay fiber web and fiber web layer and non-weaving cloth interlayer is effectively bonding, be in air lay fiber web or the air-laid nonwoven fabric low-melting fiber melt bonded due to; The structure of described upper and lower two-layer meltblown fiber web or melt-blowing nonwoven is identical or inequality; The mass fraction of described low-melting fiber in air lay fiber web or air-laid nonwoven fabric is 10～20%.
The present invention solves one of technical scheme of described preparation method's technical problem, design a kind of online preparation method of non-woven composite of the present invention, this online preparation method adopts following technology: the spinning head of melt blown webbing is faced lace curtaining spray, meltblown fiber web is deposited on the lace curtaining, form meltblown fiber web, thickness is 1～10mm, and moves forward with lace curtaining; At this moment, after mixed and disorderly fiber falls naturally from the forming head of air lay, under the swabbing action of the vacuum draw case below the lace curtaining, make the air lay fiber web that has just formed attached to above the meltblown fiber web that just is deposited on the lace curtaining, its thickness is 1～20mm, enters into the lace curtaining zone that another section is equipped with the vacuum draw case then; At this moment, make the spinning head of another device for melt blowing face the lace curtaining injection, make the meltblown fiber web of its formation cover again air lay fibroreticulate above, its thickness is 1～10mm, form the upper and lower two-layer meltblown fiber web that is, the intermediate layer is the fibroreticulate upper, middle and lower-ranking non-woven composite of an air lay fiber web; And then the 3-layer composite material fiber web enters into drying box, under pneumatic conveying drying or infrared drying effect, make the low-melting fiber fusion in the air lay fiber web, realize air lay fiber web itself and effectively bonding with two-layer meltblown fiber web up and down thereof, promptly obtain the integrally-built non-woven composite of described sandwich.
The present invention solve described preparation method's technical problem technical scheme two be, design a kind of non-online preparation method of non-woven composite of the present invention, this non-online preparation method adopts following technology: with lower floor's melt-blowing nonwoven, the intermediate layer air-laid nonwoven fabric, the upper strata melt-blowing nonwoven is respectively under the effect of three debatching rollers, being layered on the below successively is equipped with on the lace curtaining of vacuum draw case, in the formation, in, following three layers of composite nonwoven material structure, and then this composite is sent in the drying box, be under 70～120 ℃ the thermal current drying or infrared drying effect in temperature, make the low-melting fiber fusion in the air-laid nonwoven fabric, realize air-laid nonwoven fabric itself and with last, two-layer melt-blowing nonwoven is effectively bonding down, promptly obtains the integrally-built non-woven composite of described sandwich.
Compared with prior art, composite of the present invention is because of having adopted upper and lower two-layer be meltblown fiber web or melt-blowing nonwoven, the intermediate layer is the sandwich structure of air lay fiber web or air-laid nonwoven fabric, thereby can give full play to the characteristics of two kinds of fiber webs or two kinds of non-weaving cloths, realize filtering step by step, have the effect that improves filter efficiency; Preparation method of the present invention has adopted online compound or non-online composite technology, but compared with prior art has characteristics such as production technology is simple, easy to operate flexible modulation.Test shows, when composite of the present invention is done filtering material, is that the filter efficiency of 3 μ m solid particles can reach 99.99% for particle diameter.
Description of drawings
Fig. 1 is the online combination process process schematic diagram of a kind of embodiment of non-weaving cloth composite material preparation method of the present invention;
Fig. 2 is the non-online combination process process schematic diagram of the another kind of embodiment of non-weaving cloth composite material preparation method of the present invention.
Specific embodiment
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof:
The present invention is intended to develop a kind of novel non-weaving cloth composite material, adopt online compound and non-online compound mode, obtain a kind of composite of sandwich structure, promptly two-layer up and down is meltblown fiber web or melt-blowing nonwoven, the intermediate layer is the composite of air lay fiber web or air-laid nonwoven fabric structure, by means of melt-blown non-woven material and air lay nonwoven material good strainability separately, realize filtration step by step, and give the splendid strainability of novel non-woven composite of prepared sandwich structure.
The non-woven composite (abbreviation composite) of the present invention's design, it is characterized in that this composite is upper and lower two-layer be meltblown fiber web or melt-blowing nonwoven, the intermediate layer is the sandwich structure of air lay fiber web or air-laid nonwoven fabric, and effectively bonding or air-laid nonwoven fabric itself between air lay fiber web and fiber web layer and non-weaving cloth interlayer is effectively bonding, be in air lay fiber web or the air-laid nonwoven fabric low-melting fiber melt bonded due to; The structure of described upper and lower two-layer meltblown fiber web or melt-blowing nonwoven is identical or inequality; The mass fraction of described low-melting fiber in air lay fiber web or air-laid nonwoven fabric is 10～20%.
The non-woven composite preparation method of the present invention's design (is called for short the preparation method, referring to Fig. 1,2), be applicable to preparation non-woven composite of the present invention, this preparation method can have two kinds of technologies that essence is identical: online complex method and non-online complex method.
1 online preparation method
Online preparation method adopts following technology: the spinning head of melt blown webbing is faced lace curtaining spray, meltblown fiber web is deposited on the lace curtaining, form meltblown fiber web, thickness is 1～10mm, and moves forward with lace curtaining; At this moment, after mixed and disorderly fiber falls naturally from the forming head of air lay, under the swabbing action of the vacuum draw case below the lace curtaining, make the air lay fiber web that has just formed attached to above the meltblown fiber web that just is deposited on the lace curtaining, its thickness is 1～20mm, enters into the lace curtaining zone that another section is equipped with the vacuum draw case then; At this moment, make the spinning head of another device for melt blowing face the lace curtaining injection, make the meltblown fiber web of its formation cover again air lay fibroreticulate above, its thickness is 1～10mm, form the upper and lower two-layer meltblown fiber web that is, the intermediate layer is the fibroreticulate upper, middle and lower-ranking non-woven composite of an air lay fiber web; And then the 3-layer composite material fiber web enters into drying box, under pneumatic conveying drying or infrared drying effect, make the low-melting fiber fusion in the air lay fiber web, realize air lay fiber web itself and effectively bonding with two-layer meltblown fiber web up and down thereof, promptly obtain the integrally-built non-woven composite of described sandwich.
2 non-online preparation methods
Non-online preparation method adopts following technology: with one deck (lower floor) melt-blowing nonwoven, the intermediate layer air-laid nonwoven fabric, another layer (upper strata) melt-blowing nonwoven is respectively under the effect of three debatching rollers, being layered on the below successively is equipped with on the lace curtaining of vacuum draw case, in the formation, in, following three layers of composite nonwoven material, and then this composite is sent in the drying box, be under 70～120 ℃ the thermal current drying or infrared drying effect in temperature, make the low-melting fiber fusion in the air-laid nonwoven fabric, realize air-laid nonwoven fabric itself and with last, two-layer melt-blowing nonwoven is effectively bonding down, promptly obtains the integrally-built non-woven composite of described sandwich.
The used fibrous raw material of composite of the present invention and preparation method thereof is meant any fiber that can be used for air-laid process, is 10～20% low-melting fiber but require all to contain in air lay fiber web or the air-laid nonwoven fabric mass fraction.Low-melting fiber both can adopt the one-component fiber, as polyethylene fiber, polypropylene fibre, ethylene-propylene copolymer fiber, polyamide fiber or polyester fiber etc., also can adopt bicomponent fibers, as polypropylene, polyethylene fiber (PP/PE), polypropylene/polyester fiber (PP/PET), polyethylene/polyester fiber (PE/PET) or polyamide/polyethylene fiber (PA/PE) etc., and bicomponent fibers can adopt parallel type, core-skin type or tangerine lobe type structure etc.
Though preparation method of the present invention can adopt online preparation method or non-online preparation method, with respect to composite of the present invention, two kinds of preparation methods' is essential identical.From technological angle, online preparation method adopts the fibrous raw material feeding, two melt-blowing equipments and an air lay equipment work online simultaneously, produce (or compound) continuously and go out described product composite, flow process is longer, and the control point is many, complex process, but the efficient height, cost is low, and product is convenient to innovative design.But not online preparation method then directly adopts the non-weaving cloth feeding, promptly produces described product composite after debatching is compound, and flow process is short, and technology is simple, but the relative cost height, efficient is low, is subject to the non-weaving cloth quality restriction of buying or producing.
The present invention does not address part and is applicable to prior art.
Provide specific embodiments of the invention below, but claim protection domain of the present invention is not subjected to the restriction of specific embodiment.
Embodiment 1:
Adopt online combination process preparation method (referring to Fig. 1):
Melt and spray raw material and select polypropylene for use, the spinning head 11 of melt blown webbing sprays over against lace curtaining 7, fusion-jetting polypropylene fiber web 21 is deposited on the lace curtaining 7, and move forward with lace curtaining 7, at this moment, after mixed and disorderly cotton linter and low-melting-point polyethylene fiber (its mass fraction in whole air lay needed raw material is 20%) fall naturally from the forming head 3 of air lay, under the swabbing action of the vacuum draw case 51 below the lace curtaining 7, make the air lay fiber web 4 that has just formed attached to above the fusion-jetting polypropylene fiber web 22 that just is deposited on on the lace curtaining 7, enter into lace curtaining 7 zones that another section is equipped with vacuum draw case 52 then, this moment, the spinning head 12 of another device for melt blowing sprayed over against lace curtaining 7, make the fusion-jetting polypropylene fiber web 22 of formation cover air lay fiber web 4 above, in the formation, in, following three layers of non-woven composite fiber web, promptly go up, two-layer down is fusion-jetting polypropylene fiber web 22,21, the intermediate layer is the cotton linter of air lay and the fiber web 4 of low-melting-point polyethylene fiber.And then the 3-layer composite material fiber web enters into drying box 6, under 90 ℃ of thermal current desiccations, make the low-melting-point polyethylene fibers melt in the fiber web 4 of air lay, realize air lay fiber web 4 itself and effectively bonding with upper and lower two-layer fusion-jetting polypropylene fiber web 22,21 thereof, promptly obtain having the integrally-built novel non-woven composite of sandwich.
Embodiment 2
The material that melt-blown process is selected for use in the present embodiment is a polyethylene, and all the other preparation technologies are same as embodiment 1.
Embodiment 3
The material that melt-blown process is selected for use in the present embodiment is a polypropylene, and the fiber that air-laid process adopts is a short rayon fiber peacekeeping low melting point polyester fiber, and all the other preparation technologies are same as embodiment 1.
Embodiment 4
The material that melt-blown process is selected for use in the present embodiment is a polyester, and all the other preparation technologies are same as embodiment 1.
Embodiment 5
The material that melt-blown process is selected for use in the present embodiment is polyester and polypropylene, and promptly the upper and lower two-layer meltblown fiber web layer of composite nonwoven material is respectively meltblown polyester fiber web layer 22 and fusion-jetting polypropylene fiber web layer 21, and all the other preparation technologies are same as embodiment 1.
The material that melt-blown process is selected for use in the present embodiment is a polyamide, and all the other preparation technologies are same as embodiment 1.
Embodiment 7
Adopt non-online combination process preparation method (referring to Fig. 2):
Ground floor (lower floor) fusion-jetting polypropylene non-weaving cloth 91, (fibrous raw material is cotton linter and low-melting point polyester (mass fraction of low melting point polyester fiber is 10%) 10 to intermediate layer air lay method non-weaving cloth, the second layer (upper strata) fusion-jetting polypropylene non-weaving cloth 92 is respectively at debatching roller 81,82, under 83 the effect, being layered on lace curtaining 7 belows successively is equipped with on the lace curtaining 7 of vacuum draw case 51, form three layers of composite nonwoven material structure, this composite nonwoven material is sent in the drying box 6 then, mode by infrared drying, make the low melting point polyester fiber fusion in the air-laid nonwoven fabric 10, realize air-laid nonwoven fabric 10 itself and with last, following two-layer fusion-jetting polypropylene non-weaving cloth 92,91 bonding, have the overall structure of sandwich structure thereby form, promptly get described novel non-woven composite products.
Embodiment 8
Melt-blowing nonwoven is a polyester meltblown cloth in the present embodiment, and all the other preparation technologies are same as embodiment 7.
Embodiment 9
Melt-blowing nonwoven is the PLA fusion spray cloth in the present embodiment, and all the other preparation technologies are same as embodiment 7.
Melt-blowing nonwoven is a polypropylene melt-blown cloth in the present embodiment, and the fiber that air-laid process is selected for use is viscose and low melting point polyester fiber (its mass fraction is 18%), and all the other preparation technologies are same as embodiment 7.
Embodiment 11
Melt-blowing nonwoven is a polypropylene melt-blown cloth in the present embodiment, the fiber that air-laid process is selected for use is viscose and two component polypropylene, polyethylene fiber (its mass fraction is 12%), bicomponent fibers adopts the parallel type structure, and all the other preparation technologies are same as embodiment 7.
Embodiment 12
Melt-blowing nonwoven is a polypropylene melt-blown cloth in the present embodiment, the fiber that air-laid process is selected for use is polyester fiber and two component polypropylene, polyethylene fiber (its mass fraction is 15%), bicomponent fibers adopts tangerine lobe type structure, and all the other preparation technologies are same as embodiment 7.
Claims (2)
1. the preparation method of a non-woven composite, this composite is the upper and lower two-layer meltblown fiber web that is, the intermediate layer is the fibroreticulate sandwich structure of air lay, and effectively bonding between air lay fiber web and fiber web layer, be in the air lay fiber web low-melting fiber melt bonded due to; The structure of described upper and lower two-layer meltblown fiber web is identical or inequality; The mass fraction of described low-melting fiber in the air lay fiber web is 10～20%; This preparation method adopts following at Wiring technology: the spinning head of melt blown webbing is faced lace curtaining spray, meltblown fiber web is deposited on the lace curtaining, form meltblown fiber web, thickness is 1～10mm, and moves forward with lace curtaining; At this moment, after mixed and disorderly fiber falls naturally from the forming head of air lay, under the swabbing action of the vacuum draw case below the lace curtaining, make the air lay fiber web that just formed attached to just be deposited on meltblown fiber web on the lace curtaining above, its thickness is 1～20mm, enters into the lace curtaining zone that another section is equipped with the vacuum draw case then; At this moment, make the spinning head of another device for melt blowing face the lace curtaining injection, make the meltblown fiber web of its formation cover again air lay fibroreticulate above, its thickness is 1～10mm, form the upper and lower two-layer meltblown fiber web that is, the intermediate layer is the fibroreticulate upper, middle and lower-ranking non-woven composite of an air lay fiber web; And then the 3-layer composite material fiber web enters into drying box, under pneumatic conveying drying or infrared drying effect, make the low-melting fiber fusion in the air lay fiber web, realize air lay fiber web itself and effectively bonding with two-layer meltblown fiber web up and down thereof, promptly obtain the integrally-built non-woven composite of described sandwich.
2. the preparation method of a non-woven composite, this composite is the upper and lower two-layer melt-blowing nonwoven that is, the intermediate layer is the sandwich structure of air-laid nonwoven fabric, and air-laid nonwoven fabric itself and non-weaving cloth interlayer is effectively bonding, be in the air-laid nonwoven fabric low-melting fiber melt bonded due to; The structure of described upper and lower two-layer melt-blowing nonwoven is identical or inequality; The mass fraction of described low-melting fiber in air-laid nonwoven fabric is 10～20%; This preparation method adopts following non-at Wiring technology: with lower floor's melt-blowing nonwoven, the intermediate layer air-laid nonwoven fabric, the upper strata melt-blowing nonwoven is respectively under the effect of three debatching rollers, being layered on the below successively is equipped with on the lace curtaining of vacuum draw case, in the formation, in, following three layers of composite nonwoven material structure, and then this composite is sent in the drying box, be under 70～120 ℃ the thermal current drying or infrared drying effect in temperature, make the low-melting fiber fusion in the air-laid nonwoven fabric, realize air-laid nonwoven fabric itself and with last, two-layer melt-blowing nonwoven is effectively bonding down, promptly obtains the integrally-built non-woven composite of described sandwich.
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| CN104480637B (en) * | 2014-12-08 | 2016-06-08 | 昆山天洋热熔胶有限公司 | The preparation technology of a kind of hot-melt adhesive film |
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| CN109680406A (en) * | 2019-01-15 | 2019-04-26 | 厦门延江新材料股份有限公司 | A kind of water suction cloth for cleaning and its manufacturing method |
| CN110258027B (en) * | 2019-07-29 | 2024-04-09 | 孙健 | Energy-saving and environment-friendly cosmetic cotton production equipment |
| CN111118742B (en) * | 2020-02-13 | 2020-11-17 | 安徽昊华环保科技有限公司 | Multi-layer non-woven fabric fiber spinning device and spinning method, non-woven fabric and filter material |
| CN112481820A (en) * | 2020-10-30 | 2021-03-12 | 张家港骏马无纺布有限公司 | Composite melt-blown non-woven fabric and preparation method thereof |
| CN114075718A (en) * | 2021-11-15 | 2022-02-22 | 大连瑞源非织造布有限公司 | Water-absorbing composite non-woven fabric and manufacturing method thereof |
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