CN101481851A - Thermal protection flocculus and manufacturing method thereof - Google Patents
Thermal protection flocculus and manufacturing method thereof Download PDFInfo
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- CN101481851A CN101481851A CNA2009100370050A CN200910037005A CN101481851A CN 101481851 A CN101481851 A CN 101481851A CN A2009100370050 A CNA2009100370050 A CN A2009100370050A CN 200910037005 A CN200910037005 A CN 200910037005A CN 101481851 A CN101481851 A CN 101481851A
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Abstract
The invention discloses a heat insulation flocculus which is made from the following fiber: 10-64wt/% of fine denier fiber and/or superfine denier fiber, 31-80wt/% of hollow fiber and 5-30wt/% of tacky fiber. The heat insulation flocculus is manufactured by the following method: shredding and mixing various fiber raw materials; carding and spreading webs to form a fiber web; then performing random drafting on the fiber web to cause the fiber web to form a 3D network crossed structure; heating and baking the fiber web to cause at least the surface layer of the tacky fiber to be melted, and binding the surrounding fiber of the fiber web. The use of the fine denier fiber greatly increases the content of still air in the heat insulation flocculus, reduces heat conduction, can divide the space in the heat insulation flocculus into smaller spaces, and prevents or reduces air convection, thus improving the heat insulation performance of the insulation flocculus; the hollow fiber can improve bulkiness and compression resilience of the heat insulation flocculus; and the random drafting causes the bulkiness and the compression resilience of the heat insulation flocculus to be higher.
Description
Technical field
The present invention relates to a kind of insulation flocculus of making by fiber, and the manufacture method of this insulation flocculus.
Background technology
Insulation flocculus is the main auxiliary material of clothes, mainly plays winter protection, effect such as warming, and its quality is soft usually.The material that traditional insulation flocculus adopts has cotton-wool, wool, cashmere and eider down etc. natural heat insulating material formed, these natural heat insulating material formed in, warmth retention property is best surely belongs to eider down, secondly is cashmere, be wool once more, cotton-wool natural heat insulating material formed in warmth retention property be the poorest.Most natural heat insulating material formed moisture absorption ratios are very high, and resilience is poor, and in use for some time, the warmth retention property of insulation flocculus can descend significantly, therefore in the evolution of insulation flocculus, and natural heat insulating material formedly constantly be eliminated.Natural heat insulating material formed in, eider down is made up of suede nuclear, suede branch, suede sprig, the fineness of its medium staple sprig very thin (having only 2～15 μ m) makes the still air of eider down absorption very many; The suede branch is thicker relatively, and elasticity is very good, makes the bulking intensity of eider down and resilience very good; The suede branch becomes umbrella length on suede nuclear.This natural structure of eider down has been brought up its excellent thermal property, and good bulking intensity and resilience, therefore also be applied in the down jackets now always, but eider down exist the price height, easily bore suede, easily mouldy, easily damage by worms, be inconvenient to wash, degradation problem under the warmth retention property after the moisture absorption, and be subjected to the influence of bird flu problem, its application, development are restricted.
Along with development of science and technology, synthetic heat insulating material formed kind is more and more, because of its sanction property, washability, non-hygroscopic property, in light weight, advantage such as thickness is little, replacement gradually natural heat insulating material formed.By the synthetic heat insulating material formed insulation flocculus of making gum sprayed cotton, imitative silk flosssilk wadding etc. are arranged at present.
The gum sprayed cotton of Xiao Shouing, imitative silk flosssilk wadding are all mainly made by the terylene regular staple (as the terylene regular staple of 2.2dtex, 3.3dtex, 5.5dtex) at thick dawn and 3-D crimped fiber (as the 3-D crimped fiber of 6.7dtex, 7.8dtex) in the market, although its bulking intensity and resilience are better, but the space is bigger between the fiber, when having wind and internal-external temperature difference big, cross-ventilation is comparatively serious in the insulation flocculus, and therefore warming effect still remains to be improved.In addition because the rigidity of terylene is fine, and use be coarse denier fiber, therefore the insulation flocculus feel of making is harder, does not meet the demand that people wish that insulation flocculus is soft comfortable.
In addition, the insulation flocculus that also useful fine count fiber is made on the market, because technologies such as combing and lapping is immature, obviously there are phenomenons such as combing is inhomogeneous, fiber balling in insulation flocculus; Because fibre fineness is very thin, the brute force and the rigidity of fiber are also very little, so the compression resilience of insulation flocculus is poor.For above-mentioned reasons, (the general 200g/m that caused the warmth retention property of insulation flocculus not high
2The clo value of insulation flocculus between 1.8～2.2clo), warming durability is also very poor.
Summary of the invention
It is good and have higher bulking intensity and elastic insulation flocculus that technical problem to be solved by this invention provides a kind of thermal property, and the manufacture method of this insulation flocculus.The technical scheme that adopts is as follows:
On the one hand, the invention provides a kind of insulation flocculus, this insulation flocculus is made by the viscose fibre of the doughnut, 5～30% (weight) of the fine count fiber of 10～64% (weight) and/or superfine Denier fibre, 31～80% (weight).
Above-mentioned fine count fiber can be one or both the mixture in microdenier polyester fibers and the fine denier polypropylene fibers, and preferably its fibre fineness is 0.44～1.65dtex (branch Tekes), more preferably 0.44～1.32dtex; Preferred its length is 32～64mm (millimeter).
Above-mentioned superfine Denier fibre can be the mixture of a kind of or these the two kinds of fibers in super fine denier polyester fiber and the superfine denier polypropylene fibers, and preferably its fibre fineness is more than or equal to 0.011dtex and less than 0.44dtex; Preferred its length is 32～64mm (millimeter).
Above-mentioned doughnut can be the mixture of a kind of or these the two kinds of fibers in hollow polyester fibre and the hollow far IR fibre, and preferably its fibre fineness is 1.1～7.7dtex, more preferably 3.3～6.7dtex; Preferred its length is 32～64mm.Doughnut is the mixture of a kind of or these the two kinds of fibers in three-dimensional doughnut and the two-dimentional doughnut, preferred above-mentioned doughnut is three-dimensional doughnut, particularly three-dimensional hollow, crimped fiber (hollow 3-D crimped polyester fiber or hollow three-dimensional crimp far IR fibre).
Above-mentioned viscose fibre can be that (polyester fiber has two kinds of low melting point and high-melting-points to low melting point polyester fiber, the present invention adopts low melting point polyester fiber wherein), a kind of in polypropylene fibre and the polypropylene polyester complex fiber or the mixture of multiple fiber wherein, preferably its fibre fineness is 2.2～4.4dtex; Preferred its length is 32～64mm.
Preferred above-mentioned insulation flocculus adopts following method to make, and this method comprises the steps: fibrous raw material shreddings such as fine count fiber and/or superfine Denier fibre, doughnut and viscose fibres and mixes; Carry out combing, lapping then, form fibre web; Then fibre web is carried out mixed and disorderly drawing-off, make fibre web form solid netted chi structure; Heating is cured to fibre web then, makes the top layer fusing of viscose fibre at least, and with the bonding of the fiber around it.
In the practical application, when the fibre web heating is cured, should guarantee that fine count fiber and/or superfine Denier fibre, doughnut can not melt, that is to say that stoving temperature should be lower than the fusing point of fine count fiber and/or superfine Denier fibre and doughnut.
Preferably fibrous raw material is carried out twice combing, lapping.
Preferably to two sides spray adhesive through the fibre web after the mixed and disorderly drawing-off.
Preferably after curing, optical processing is scalded on the insulation flocculus surface, the fiber that the insulation flocculus surface is upright plates, and at the insulation flocculus surface filming.
On the other hand, the invention provides the manufacture method of above-mentioned insulation flocculus, this manufacture method comprises the steps: successively
(1) with fibrous raw material shreddings such as fine count fiber and/or superfine Denier fibre, doughnut and viscose fibre and mixing;
(2) fibrous raw material that mixes is carried out combing, lapping, form fibre web;
(3) fibre web is carried out mixed and disorderly drawing-off, make fibre web form solid netted chi structure;
(4) heating is cured to fibre web, makes the top layer fusing of viscose fibre at least, and with the bonding of the fiber around it, obtains insulation flocculus.
Adopt single cylinder, two pass husband in the used carding equipment of above-mentioned steps (2), card clothing adopts ultra-fine toothing (space width of preferred card clothing is 1.8mm), fine count fiber and superfine Denier fibre combing can be opened.
Between preferred steps (2) and the step (3), increase step (2-2), carry out the combing second time, lapping.Various fibers are mixed more equably, fiber can be scatter fully, do not have the phenomenon of uniting, make interfibrous structure more stable, thereby improve the tensile strength of insulation flocculus, and the warming uniformity of insulation flocculus and grammes per square metre stability are guaranteed, can significantly increase the quantity of fiber cutting room simultaneously, reduce the flowability of air, improve the thermal property of insulation flocculus.
The mixed and disorderly draft process of above-mentioned steps (3) is that traditional insulation flocculus production technology is unexistent.Through mixed and disorderly drawing-off, originally be transversely arranged part fiber in the fibre web to vertically moving, make and form the netted arrangement of crossings on different level between fiber, and reduce the vertical and horizontal powerful difference of fibre web, regulate the mass area ratio of fibre web simultaneously, through after bonding, the setting, make fibre web keep stable fluffy structure, thereby the bulking intensity of insulation flocculus and compression resilience are improved again.The fibre web drawing machine mainly is made up of drawing rollers, and the drawing rollers surface coats card clothing.Common three drawing rollers constitute a draw zone, by a motor-driven; The gear ratio of the driving member of three drawing rollers in the draw zone, the fixedly drafting multiple of decision draw zone; When between the draw zone during no drawing-off, draw zone quantity has determined fixedly drafting multiple of the total minimum of fibre web drawing machine.Usually the fibre web drawing machine is provided with a plurality of draw zones, (drafting multiple is less usually by multistage drafting, generally between 1～2 times), make the part fiber that was transversely arranged in the intersection laying fibre web originally to vertically moving, thereby reduce the vertical and horizontal powerful difference of fibre web, the mass area ratio of regulating fibre web simultaneously.
In addition, between above-mentioned steps (3) and the step (4), increase step (3-2), to the two sides spray adhesive of fibre web.Adhesive is sprayed at fluffy fibrolaminar two sides, because certain pressure is arranged when spraying, therefore also can infiltrate adhesive in the inside of fibre web, through curing, curing molding is in the crosslinked film forming of fiber surface and fiber intersection again for fibre web behind the spray adhesive, thereby strengthened the adhesion of fiber intersection, improved the tensile strength of insulation flocculus, and improved the stiffness of fiber, the bulking intensity of insulation flocculus and compression resilience are improved.Above-mentioned adhesive does not preferably contain the environment-friendly adhesive of formaldehyde.
Preferably increase step (5) afterwards in step (4), optical processing is scalded on the insulation flocculus surface, the fiber that the insulation flocculus surface is upright plates, and at the insulation flocculus surface filming.Can alleviate the brill suede phenomenon of insulation flocculus so greatly, and improve the windproof performance of insulation flocculus.Can adopt hot smooth roll that insulation flocculus is scalded optical processing, the staple fibre upright the insulation flocculus surface plates, and slight film forming.
Finish above-mentioned steps (1), (2), (3), (4) (also comprising step (2-2), (3-2), (5) in case of necessity) afterwards, the insulation flocculus that obtains is cooled off (can cool off at normal temperatures), excision rim charge, but rolling then obtain the insulation flocculus of rolling.
Preferably when making insulation flocculus, also add fibre fineness and be in staple fibre between fine count fiber (or superfine Denier fibre) and the doughnut, as transitional fibre, help making various mixed with fibers more even like this, and both can assist doughnut to constitute the support skeleton structure of insulation flocculus, can assist fine count fiber (or superfine Denier fibre) to play thermal effect again.
The transfer mode of heat mainly is conduction, convection current and radiation, and human body is main conduction and the convection current dissipated heat of passing through, and the main path that therefore improves the thermal property of insulation flocculus is to cut off or reduce heat to conduct and convection current.The present invention uses an amount of fine count fiber (the suede sprig in the fine count fiber simulation eider down) in insulation flocculus, on the one hand, fiber surface can adsorb still air, and under the situation of equivalent weight, the specific area of fine count fiber is far longer than coarse denier fiber, like this, the use of fine count fiber has improved the insulation flocculus fiber specific surface area greatly, thereby increased the amount of the still air that is adsorbed on fiber surface, improve the content of still air in the insulation flocculus greatly, because the thermal conductivity factor of air is well below various fibrous materials, so the increase of still air can effectively reduce the heat conduction; On the other hand, the use of fine count fiber can be cut into the space in the insulation flocculus littler space, thus the cross-ventilation in prevention or the minimizing space, and therefore, the use of fine count fiber is improved the thermal property of insulation flocculus.The present invention uses an amount of doughnut (the suede branch in the doughnut simulation eider down) in insulation flocculus, can improve the bulking intensity and the compression resilience of flocculus; Through mixed and disorderly drawing-off, make to form the netted arrangement of crossings on different level between fiber, can further improve the bulking intensity and the compression resilience of flocculus.After testing, 200g/m
2The clo value of insulation flocculus of the present invention can reach 3.2～3.7clo, and the highest 2.4～2.5clo that can only reach of clo value of the gum sprayed cotton of same grammes per square metre, imitative silk flosssilk wadding; The compression rebound rate of insulation flocculus of the present invention reaches 96.8%.
Description of drawings
Fig. 1 is the flow chart of the embodiment of the invention 1 insulation flocculus manufacture method;
Fig. 2 is the structural representation of the fibre web before the mixed and disorderly drawing-off;
Fig. 3 is the structural representation of the fibre web after the mixed and disorderly drawing-off.
The specific embodiment
At first, by weight, be equipped with following fibrous raw material: (all be microdenier polyester fibers, its fibre fineness is 0.78dtex to fine count fiber 25%, length is 51mm), doughnut 60% (all be the hollow 3-D crimped polyester fiber, its fibre fineness is 3.3dtex, and length is 64mm), viscose fibre 15% (all is a viscose fibre 4080, be the skin-core structure low melting point polyester fiber, its fibre fineness is 4.4dtex, and length is 51mm).
Then, make insulation flocculus (with reference to figure 1) according to following step successively:
(1) with fibrous raw material shreddings such as fine count fiber, doughnut and viscose fibre and mixing;
(2) fibrous raw material that mixes is carried out combing, lapping, form fibre web; Adopt single cylinder, two pass husband in the used carding equipment, card clothing adopts ultra-fine toothing (space width of card clothing is 1.8mm);
(3) carry out the combing second time, lapping; The structure of used carding equipment is identical with step (2); The fibre net structure that obtains as shown in Figure 2, the fiber 1 in the fibre web is arranged along same direction basically.
(4) fibre web is carried out mixed and disorderly drawing-off, make fibre web form solid netted chi structure, as shown in Figure 3, intersect, make fibre web form space network through the fiber in the fibre web of mixed and disorderly drawing-off 1; Used fibre web drawing machine mainly is made up of drawing rollers, and the drawing rollers surface coats card clothing.Three drawing rollers constitute a draw zone, by a motor-driven; The gear ratio of the driving member of three drawing rollers in the draw zone, the fixedly drafting multiple of decision draw zone; When between the draw zone during no drawing-off, draw zone quantity has determined fixedly drafting multiple of the total minimum of fibre web drawing machine.The fibre web drawing machine is provided with a plurality of draw zones, (drafting multiple is less usually by multistage drafting, generally between 1～2), make the part fiber that was transversely arranged in the intersection laying fibre web originally to vertically moving, thereby reduce the vertical and horizontal powerful difference of fibre web, the mass area ratio of regulating fibre web simultaneously.
(5) to the two sides spray adhesive of fibre web, adhesive consumption is 10～12% of a fibre web gross weight;
(6) fibre web is sent into baking oven, heating is cured to fibre web, and 150 ℃ of baking temperatures make the top layer fusing of viscose fibre at least, and with the bonding of the fiber around it, obtain insulation flocculus;
(7) optical processing is scalded on the insulation flocculus surface that step (6) is obtained, and the fiber that the insulation flocculus surface is upright plates, and at the insulation flocculus surface filming.
(8) insulation flocculus that obtains is cooled off at normal temperatures, rolling behind the excision rim charge obtains the insulation flocculus of rolling.
Embodiment 2
At first, by weight, be equipped with following fibrous raw material: fine count fiber 40% (all be microdenier polyester fibers, its fibre fineness is 1.32dtex, and length is 51mm), doughnut 40% (all is a hollow three-dimensional crimp far IR fibre, its fibre fineness is 6.7dtex, and length is 64mm), viscose fibre 20% (all is a polypropylene fibre, its fibre fineness is 2.2dtex, and length is 51mm).
The manufacture method of this insulation flocculus is identical with embodiment 1.
Embodiment 3
At first, by weight, be equipped with following fibrous raw material: (wherein 28% is that fibre fineness is that 0.5dtex, length are the microdenier polyester fibers of 64mm to fine count fiber 38%; Other 10% is that fibre fineness is that 1.5dtex, length are the microdenier polyester fibers of 32mm), superfine Denier fibre 20% (all is the super fine denier polyester fiber, wherein 10% fibre fineness is that 0.012dtex, length are 38mm, other 10% fibre fineness is that 0.33dtex, length are 64mm), doughnut 34% (all is a hollow polyester fibre, its fibre fineness is 5.5dtex, length is 64mm), viscose fibre 8% (all is the polypropylene polyester complex fiber, its fibre fineness is 3.2dtex, and length is 36mm).
The manufacture method of this insulation flocculus is identical with embodiment 1.
Embodiment 4
At first, by weight, be equipped with following fibrous raw material: superfine Denier fibre 15% (all is the super fine denier polyester fiber, its fibre fineness is 0.42dtex, length is 51mm), doughnut 70% (all is hollow polyester fibre, wherein 40% is three-dimensional doughnut, and its fibre fineness is 3.3dtex, and length is 32mm; Other 30% is two-dimentional doughnut, and fibre fineness is 1.32dtex, and length is 51mm), (wherein polypropylene fibre 6%, and its fibre fineness is 3.3dtex, and length is 64mm for viscose fibre 15%; Polypropylene polyester complex fiber 9%, its fibre fineness are 4.0dtex, and length is 32mm).
The manufacture method of this insulation flocculus is identical with embodiment 1 basically, but omits step (5), promptly from step (4) directly to step (6).
Claims (10)
1, a kind of insulation flocculus is characterized in that being made by the viscose fibre of the doughnut, 5～30% (weight) of the fine count fiber of 10～64% (weight) and/or superfine Denier fibre, 31～80% (weight).
2, insulation flocculus according to claim 1 is characterized in that: described fine count fiber is one or both the mixture in microdenier polyester fibers and the fine denier polypropylene fibers, and its fibre fineness is 0.44～1.65dtex, and its length is 32～64mm; Described superfine Denier fibre is the mixture of a kind of or these the two kinds of fibers in super fine denier polyester fiber and the superfine denier polypropylene fibers, and its fibre fineness is more than or equal to 0.011dtex and less than 0.44dtex, and its length is 32～64mm.
3, insulation flocculus according to claim 1 is characterized in that: described doughnut is the mixture of a kind of or these the two kinds of fibers in hollow polyester fibre and the hollow far IR fibre, and its fibre fineness is 1.1～7.7dtex, and its length is 32～64mm.
4, insulation flocculus according to claim 3 is characterized in that: the fibre fineness of described doughnut is 3.3～6.7dtex.
5, insulation flocculus according to claim 1, it is characterized in that: described viscose fibre is a kind of in low melting point polyester fiber, polypropylene fibre and the polypropylene polyester complex fiber or the mixture of multiple fiber wherein, its fibre fineness is 2.2d～4.4dtex, and its length is 32～64mm.
6, the manufacture method of the described insulation flocculus of claim 1-5 is characterized in that comprising the steps: successively
(1) with fibrous raw material shreddings such as fine count fiber and/or superfine Denier fibre, doughnut and viscose fibre and mixing;
(2) fibrous raw material that mixes is carried out combing, lapping, form fibre web;
(3) fibre web is carried out mixed and disorderly drawing-off, make fibre web form solid netted chi structure;
(4) heating is cured to fibre web, makes the top layer fusing of viscose fibre at least, and with the bonding of the fiber around it, obtains insulation flocculus.
7, the manufacture method of insulation flocculus according to claim 6 is characterized in that: between described step (2) and the step (3), increase step (2-2), carry out the combing second time, lapping.
8, the manufacture method of insulation flocculus according to claim 6 is characterized in that: the used fibre web drawing machine of the mixed and disorderly drawing-off of described step (3) comprises drawing rollers, and the drawing rollers surface coats card clothing, and three drawing rollers constitute a draw zone; The fibre web drawing machine is provided with a plurality of draw zones, and fibre web is carried out multistage drafting.
9, the manufacture method of insulation flocculus according to claim 6 is characterized in that: between described step (3) and the step (4), increase step (3-2), to the two sides spray adhesive of fibre web.
10, the manufacture method of insulation flocculus according to claim 6, it is characterized in that: described step (4) increases step (5) afterwards, optical processing is scalded on the insulation flocculus surface, and the fiber that the insulation flocculus surface is upright plates, and at the insulation flocculus surface filming.
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