CN102493128A - Preparation method of melt blowing warm retention wadding - Google Patents
Preparation method of melt blowing warm retention wadding Download PDFInfo
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- CN102493128A CN102493128A CN2011104284780A CN201110428478A CN102493128A CN 102493128 A CN102493128 A CN 102493128A CN 2011104284780 A CN2011104284780 A CN 2011104284780A CN 201110428478 A CN201110428478 A CN 201110428478A CN 102493128 A CN102493128 A CN 102493128A
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Abstract
The invention discloses a preparation method of melt blowing warm retention wadding; in the preparation method, high polymer superfine fibers are spun by adopting a known melt blowing method; the preparation method is characterized in that an electrostatic flocking box is arranged between a melt blowing die head and a receiving device, the superfine fibers are led to pass through the electrostatic flocking box and be bonded with short fibers which vertically fly down in the electrostatic flocking box under the action of an electrostatic field; when the superfine fibers bonded with the short fibers reach the receiving device, the warm retention wadding is formed; high polymer is polypropylene, polyester, polybutylene terephthalate, polytrimethylene terephthalate or a mixture thereof; the short fibers are thermal storage temperature adjustment short fibers; the diameters of the short fibers are 2-20 mum, the lengths of the short fibers are 3-15mm, and the additive amount of the short fibers accounts for 5-30% of the total weight of the warm retention wadding; and the short fibers are supplied by a feeding mechanism; the flocking output voltage of the electrostatic flocking box is 20-100kV; and the distance between the melt blowing die and the electrostatic flocking box is 10-40 cm; and the distance between an upper polar plate and a lower polar plate in the electrostatic flocking box is 30-50 cm.
Description
Technical field
The present invention relates to the non-weaving cloth technology of field of textiles, be specially a kind of preparation method who melts and sprays insulation flocculus of heat-accumulation temperature-adjustment function.
Background technology
The melt-blowing nonwoven technology is that polymer directly becomes a kind of in the net method.It is that the high polymer molten that screw extruder is extruded is formed superfine fibre through make the melt thread receive extremely stretching with the high-speed and high-temperature air flow blowing; Gather into then on lace curtaining or the one-tenth net drum and form fibre web, be able to reinforce a kind of production technology of processing non-weaving cloth through the autoadhesion effect again.Through melt-blowing nonwoven technology preparation melt and spray insulation flocculus or wadding, its fibre fineness is generally between 1 μ m～5 μ m.Have a large amount of fine voids in the insulation flocculus, make flocculus contain a large amount of still airs, the wandering retardation of heat apparently higher than general fibre, thereby is formed better warming effect.Because the ultra-fine and high porosity of fibrous material itself makes material have better pliability, ventilative, water vapour permeability, be one of ideal material of doing the insulation clothes simultaneously.Measure through the national unit that detects, in the clothes insulation material of identical weight, it is best to melt and spray the insulation flocculus heat insulation effect.Insulation flocculus uses at present both at home and abroad in a large number, and market growth speed is also very fast.
But, the existing poor durability that melts and sprays insulation flocculus, in use, because the effect repeatedly of external force, its volume weight becomes greatly gradually, even becomes the shape flocculus that hardens, thin and hard flocculus, thereby loses good heat insulating ability and other wearability.
Number of patent application is 200610127389.1 to have announced a kind of preparation method who contains the staple fibre melt spraying non-woven fabrics.Number of patent application is 200810175886.8 to have announced a kind of method of making melt-blown nonwoven down dual constituent thermal insulating interlining.More than the purpose of two patents be to play a supporting role through adding staple fibre or eider down, in order to improve the withstand voltage properties of melt-blown non-woven flocculus, the preparation method of employing sneaks in the melt spray fibre web staple fibre or eider down through the air-negative-pressure effect.This preparation method makes staple fibre or eider down arragement direction consistent with meltblown fibers on the one hand, and the thickness of non-weaving cloth flocculus and withstand voltage properties improve limited; The uniformity that makes staple fibre or eider down mix with melt spray fibre web on the other hand is not high.
Summary of the invention
To the deficiency of prior art, technical problem to be solved by this invention is that a kind of preparation method of insulation flocculus is provided.This preparation method adopts improved melt blown technology to combine with improved static flocking technology, and it is simple to have technology, and product quality improves; Be applicable to characteristics such as industrialization use; Prepared insulation flocculus has the heat-accumulation temperature-adjustment function, and is in light weight, bulking intensity and compression reaction excellent performance; Characteristics such as breathable moisture permeability is good, and warming effect is obvious.
The technical scheme that the present invention solve the technical problem is: the preparation method who designs a kind of insulation flocculus; This preparation method adopts known meltblowing method spinning high polymer superfine fibre; It is characterized in that the electrostatic spinning case is set between meltblown beam and receiving system, and make melt-blown micro fibre, be bonded together with the sagging staple fibre that falls of flying nonstop to of effect of the inherent electrostatic field of electrostatic spinning case through the electrostatic spinning case; When arriving receiving system, promptly form insulation flocculus; Said high polymer is polypropylene, PETG, polybutylene terephthalate (PBT), polytrimethylene terephthalate or their mixture; Said staple fibre is the heat-accumulation temperature-adjustment staple fibre, and diameter is 2～20 μ m, and length is 3～15mm, and addition is to melt and spray 5～30% of insulation flocculus gross weight; The flocking output voltage of said electrostatic spinning case is 20～100kV; Distance between said meltblown beam and the electrostatic spinning case is 10～40cm; Distance in the said electrostatic spinning case between top crown and the bottom crown is 30～50cm.
Compared with prior art, preparation method of the present invention adopts melt blown technology to combine with static flocking technology, under the situation of not destroying original spinning machine structure; Through conventional melt-blown process of suitable improvement and electrostatic flocking technology, can prepare the excellent insulation flocculus of thermal property, it is simple to have technology; Output is big, and fibre web mixes, and product quality improves; Technology maturation, advantage such as use cost is low very is beneficial to industrialization promotion and uses.Prepared insulation flocculus has positive heat-accumulation temperature-adjustment function; And it is in light weight; Bulking intensity and compression reaction excellent performance; Characteristics such as breathable moisture permeability is good, and warming effect is obvious can be applicable to the military cotton clothes, flight thermal glove of extremely frigid zones, military cold or hot weather is made caliga, military diving dress, winter wear, marine corps's micro climate cooling clothes etc.; Also can be applicable to civilian outdoor exercises clothes, insulated cold wear etc.
Description of drawings
Fig. 1 is the technical process sketch map of a kind of embodiment of insulation flocculus preparation method of the present invention.
Fig. 2 is the electrostatic spinning principle schematic of a kind of embodiment of insulation flocculus preparation method of the present invention.
Fig. 3 is the prepared insulation flocculus structural representation of a kind of embodiment of insulation flocculus preparation method of the present invention.
The specific embodiment
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof:
The insulation flocculus preparation method of the present invention's design (is called for short the preparation method; Referring to Fig. 1-3), adopt known meltblowing method spinning high polymer superfine fibre, it is characterized in that between meltblown beam 1 and receiving system 3, electrostatic spinning case 2 being set; And make melt-blown micro fibre 7 through electrostatic spinning case 2; Be bonded together with the sagging staple fibre 6 that falls of flying nonstop to of the effect of electrostatic spinning case 2 inherent electrostatic fields, when arriving receiving system 3, promptly form insulation flocculus 5; Said high polymer is polypropylene, PETG, polybutylene terephthalate (PBT), polytrimethylene terephthalate or their mixture; Said staple fibre is a heat-accumulation temperature-adjustment staple fibre 6, and diameter is 2～20 μ m, and length is 3～15mm, and addition is to melt and spray 5～30% of insulation flocculus 5 gross weights, and staple fibre is provided by feeding machanism; The flocking output voltage of said electrostatic spinning case 2 is 20～60kV; Between said meltblown beam 1 and the electrostatic spinning case 2 is 10～40cm apart from a; Distance in the said electrostatic spinning case 2 between top crown 21 and the bottom crown 22 is 30～50cm.
Key of the present invention is between meltblown beam 1 and receiving device 3, suitably to be provided with electrostatic spinning case 2.The electrostatic spinning principle and the technical process of electrostatic spinning case 2 is (referring to Fig. 2): top crown 21 is plate-type metal nets, and bottom crown 22 is metal plate carriages, and the centre is the superfine fibre stream (fiber web) that meltblown beam 1 winding-up is come out.Top crown 21 is connected on the cathode output end and cathode output end of HV generator 4 with lead respectively with bottom crown 22.Feeding machanism is arranged on the top of top crown 21, mainly comprises hopper 23 and feed axle 24.Contain the heat-accumulation temperature-adjustment staple fibre in the hopper 23, the bottom of hopper 23 is the grid bushing, to make things convenient for the whereabouts of staple fibre; Feed axle 24 is installed in the hopper 23, and the rotation of feed axle 24 can make heat-accumulation temperature-adjustment staple fibre 6 drop on the utmost point on the wire netting (negative pole) plate 21.Because of heat-accumulation temperature-adjustment staple fibre 6 contacts chargedly in the landing process with negative pole, cause the part fiber by the direction of an electric field arranged vertical; Heat-accumulation temperature-adjustment staple fibre 6 polarizes in electric field simultaneously, and the charge concentration identical with negative pole polarity is at the end away from negative plate 21, and positive charge concentrates on the end near negative plate 21.When heat-accumulation temperature-adjustment staple fibre 6 contacts with negative plate 21; Because the electrical conductivity of metal electrode board is than heat-accumulation temperature-adjustment staple fibre 6 height; Thereby can in fiber, produce conductive current, promptly heat-accumulation temperature-adjustment staple fibre 6 can produce negative electrostatic charge, makes heat-accumulation temperature-adjustment staple fibre 6 in electric field E, have very big degree of stretching and circling in the air property; With higher speed vertical drop in the melt-blown micro fibre fibre web; Be bonded together with melt-blown micro fibre, arrive at last on the receiving system 3, solidify to form insulation flocculus 5 of the present invention.
The width of said electrostatic spinning case 2 can be made with the fibroreticulate width of ejection according to the width of meltblown beam 1.The casing embodiment of electrostatic spinning case 2 adopts the environmental protection pmma material; Top crown 21 is selected copper mesh for use, can effectively produce static, and directly conducts electricity.
Preparation method's of the present invention technical process is that heat-accumulation temperature-adjustment staple fibre 6 is placed in the casing of electrostatic spinning case 2, after the energized, can in electrostatic spinning case 2, form a high voltage electric field, makes heat-accumulation temperature-adjustment staple fibre 6 electrically charged; The superfine fibre net 7 of meltblown beam 1 ejection gets in the casing of electrostatic spinning case 2 from an end of electrostatic spinning case 2, and the rotation of feed axle 24 can make the continuous vertical landing of staple fibre, through three times to five seconds; Heat-accumulation temperature-adjustment staple fibre 6 is bonded together with melt-blown micro fibre net 7; Be solidified into net, the other end from casing comes out then, reaches on the receiving system 3 to collect; Form the flocking of Continuous Flow line type, and then prepare said insulation flocculus.
It is fast that preparation method of the present invention has speed of production, and fibre web such as mixes at advantage, adopts lucite to make casing in addition and have and be convenient to the advantage of observing, prevent that fine hair from flying upward.
The grammes per square metre of insulation flocculus according to the invention is 40g/m
2～500g/m
2, thickness is 5mm～50mm;
Melt-blown process according to the invention need be adjusted the common process parameter, mainly is the adjustment of air compressor machine rotating speed and receiving range, and is good and warmth retention property is good melts and sprays insulation flocculus with the preparation bulking intensity.It is better that the air compressor machine rotating speed is controlled at 18-26Hz, and it is better that receiving range is controlled at 30-50cm.
The addition of heat-accumulation temperature-adjustment staple fibre 6 according to the invention is to melt and spray 5～30% of insulation flocculus gross weight, preferred 15%.
Melt blown technology high polymer raw material of the present invention is polypropylene, PETG, modified poly ester (comprising PBT--polybutylene terephthalate (PBT) and PTT--polytrimethylene terephthalate) and composition thereof etc., optimization polypropylene.
Heat-accumulation temperature-adjustment staple fibre 6 of the present invention is to contain a certain amount of phase-change material; Can when variation of ambient temperature, change absorption or emit heat by solid-liquid and the liquid-solid phase through phase-change material, thereby reach the fiber of absorption, storage, reallocation and release heat effect.This fiber itself is a prior art.
The diameter of heat-accumulation temperature-adjustment staple fibre 6 of the present invention and length confirms according to the diameter and the melt spray fibre web density of meltblown fibers, and principle is heat-accumulation temperature-adjustment staple fibre 6 is evenly distributed in melt spray fibre web and play a supportive role; Research shows that the diameter of heat-accumulation temperature-adjustment staple fibre 6 is controlled at 2～20 μ m, and length is that 3～15mm effect is better.
Though preparation method of the present invention stresses to use the heat-accumulation temperature-adjustment staple fibre, does not get rid of the staple fibre that uses other kinds.
The flocking output voltage of electrostatic spinning case 2 according to the invention is identical with the output voltage of conventional electrostatic spinning, can be 20～100kV; But want to control the addition of heat-accumulation temperature-adjustment staple fibre 6.
Be designed to 10～40cm apart from a between meltblown beam of the present invention and the electrostatic spinning case.
Distance between the upper and lower pole plate of conventional electrostatic spinning is generally 10cm.The top crown 21 of electrostatic spinning case 2 according to the invention is different with conventional electrostatic spinning with the distance setting between the bottom crown 22, and the distance between the upper and lower pole plate is designed to 30～50cm.This mainly is to consider that melt spray fibre web has certain thickness.
The preparation method that the present invention adopts is the static flocking technology with reference to existing maturation; Staple fibre is implanted in the melt spray fibre web with vertical direction; Realize significantly improving of non-weaving cloth flocculus withstand voltage properties and mixture homogeneity; This preparation method has simple, and cost is low, very is beneficial to the advantage of popularization.The staple fibre that adopts among the present invention is to have heat-accumulation temperature-adjustment fiber actively warming and thermoregulation effect, makes human body under various harsh environmental conditions, and the longer time remains in the pleasant temperature range.
The present invention does not address part and is applicable to prior art.
Below provide specific embodiment of the present invention.Specific embodiment only is used for further concrete narration the present invention, does not limit application claim protection domain of the present invention.
The insulation flocculus preparation process condition of embodiment 1-12 is listed in table 1.
Prepare insulation flocculus according to process conditions, according to the compression performance of weaving FZ/T64003-93 canonical measure insulation flocculus; According to national GB11048-89 standard, adopt the measurement of A.S.T.M heat insulating ability testing machine to melt and spray the insulation flocculus thermal property, list in the table 2 respectively.
The process conditions table of table 1 insulation flocculus preparation method embodiment
* a is flocking case front end and the terminal distance of meltblown beam in the accompanying drawing 1;
The thermal property of table 2 insulation flocculus and compression performance table
Annotate: 1) clo value I, clo value II, compressive recovery rate I, compressive recovery rate II are respectively the numerical value that melt-blown non-woven material adds heat-accumulation temperature-adjustment staple fibre front and back;
2) the raising rate of clo value=[(clo value II-clo value I)/clo value I] * 100%;
Compressive recovery rate raising rate=[(compressive recovery rate II-compressive recovery rate I)/compressive recovery rate I] * 100%.
Claims (3)
1. preparation method who melts and sprays insulation flocculus; This preparation method adopts known meltblowing method spinning high polymer superfine fibre; It is characterized in that the electrostatic spinning case is set between meltblown beam and receiving system, and make superfine fibre, be bonded together with the sagging staple fibre that falls of flying nonstop to of effect of the inherent electrostatic field of electrostatic spinning case through the electrostatic spinning case; When arriving receiving system, promptly form insulation flocculus; Said high polymer is polypropylene, polyester, polybutylene terephthalate (PBT), polytrimethylene terephthalate or their mixture; Said staple fibre is the heat-accumulation temperature-adjustment staple fibre, and diameter is 2～20 μ m, and length is 3～15mm, and addition is to melt and spray 5～30% of insulation flocculus gross weight, is provided by feeding machanism; The flocking output voltage of said electrostatic spinning case is 20～60kV; Distance between said meltblown beam and the electrostatic spinning case is 10～40cm; Distance in the said electrostatic spinning case between top crown and the bottom crown is 30～50cm.
2. according to the said preparation method who melts and sprays insulation flocculus of claim 1, it is characterized in that said heat-accumulation temperature-adjustment staple fibre is to melt and spray 5～30% of insulation flocculus gross weight.
3.
A kind of claim 1, the 2 or 3 said insulation flocculus that melt and spray insulation flocculus preparation method preparation, the grammes per square metre that it is characterized in that said insulation flocculus is 40～500g/m
2, thickness is 5～50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104284780A CN102493128A (en) | 2011-12-20 | 2011-12-20 | Preparation method of melt blowing warm retention wadding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104284780A CN102493128A (en) | 2011-12-20 | 2011-12-20 | Preparation method of melt blowing warm retention wadding |
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| CN102493128A true CN102493128A (en) | 2012-06-13 |
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| CN2011104284780A Pending CN102493128A (en) | 2011-12-20 | 2011-12-20 | Preparation method of melt blowing warm retention wadding |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846549A (en) * | 2015-05-18 | 2015-08-19 | 武汉纺织大学 | Gummed multilayer flocking type high-elastic uvioresistant warmth keeping flaky material and manufacturing method thereof |
| CN107299455A (en) * | 2017-06-07 | 2017-10-27 | 宜兴市泰宇汽车零部件有限公司 | A kind of two-component acoustical cotton |
| CN107938172A (en) * | 2017-12-25 | 2018-04-20 | 安徽省临泉县万隆塑料包装有限公司 | A kind of hydrophily melt spraying non-woven fabrics |
| CN111101293A (en) * | 2019-12-25 | 2020-05-05 | 耿程辉 | Dandelion wool fiber blending electrostatic polymerization process and polymerization equipment thereof |
| CN112981712A (en) * | 2021-02-05 | 2021-06-18 | 东华大学 | Fiber composite thermal insulation flocculus and preparation method thereof |
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| US4892758A (en) * | 1986-10-17 | 1990-01-09 | Kimberly-Clark Corporation | Cleaning product |
| CN1920149A (en) * | 2006-09-18 | 2007-02-28 | 中国纺织科学研究院 | Preparation method of meltblow nonwoven containing short fiber |
| CN100998885A (en) * | 2007-01-15 | 2007-07-18 | 浙江理工大学 | Bamboo carbon fiber electrostatic flocket fabric apable of purifying air and its production method |
-
2011
- 2011-12-20 CN CN2011104284780A patent/CN102493128A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4892758A (en) * | 1986-10-17 | 1990-01-09 | Kimberly-Clark Corporation | Cleaning product |
| CN1920149A (en) * | 2006-09-18 | 2007-02-28 | 中国纺织科学研究院 | Preparation method of meltblow nonwoven containing short fiber |
| CN100998885A (en) * | 2007-01-15 | 2007-07-18 | 浙江理工大学 | Bamboo carbon fiber electrostatic flocket fabric apable of purifying air and its production method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846549A (en) * | 2015-05-18 | 2015-08-19 | 武汉纺织大学 | Gummed multilayer flocking type high-elastic uvioresistant warmth keeping flaky material and manufacturing method thereof |
| CN107299455A (en) * | 2017-06-07 | 2017-10-27 | 宜兴市泰宇汽车零部件有限公司 | A kind of two-component acoustical cotton |
| CN107938172A (en) * | 2017-12-25 | 2018-04-20 | 安徽省临泉县万隆塑料包装有限公司 | A kind of hydrophily melt spraying non-woven fabrics |
| CN107938172B (en) * | 2017-12-25 | 2020-06-23 | 安川科技(东阳)有限公司 | Hydrophilic melt-blown non-woven fabric |
| CN111101293A (en) * | 2019-12-25 | 2020-05-05 | 耿程辉 | Dandelion wool fiber blending electrostatic polymerization process and polymerization equipment thereof |
| CN112981712A (en) * | 2021-02-05 | 2021-06-18 | 东华大学 | Fiber composite thermal insulation flocculus and preparation method thereof |
| CN112981712B (en) * | 2021-02-05 | 2022-07-15 | 东华大学 | Fiber composite thermal insulating flocculus and preparation method thereof |
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Application publication date: 20120613 |