CN104797748B

CN104797748B - Composite spinning jete and composite fibre, the manufacture method of composite fibre

Info

Publication number: CN104797748B
Application number: CN201380060030.5A
Authority: CN
Inventors: 增田正人; 宫下雅臣; 船越祥二
Original assignee: Toray Industries Inc
Current assignee: Toray Industries Inc
Priority date: 2012-11-19
Filing date: 2013-11-15
Publication date: 2018-04-03
Anticipated expiration: 2033-11-15
Also published as: JP6344235B2; JPWO2014077359A1; EP2921576A4; EP2921576B1; KR20150086235A; KR102061153B1; WO2014077359A1; EP2921576A1; CN104797748A; TW201425666A; US20180320290A1; TWI633216B; US20150329991A1

Abstract

Even if it is high that the problem of the present invention is to provide a kind of density with island component, also easily by the composite fibre of the island structure of extra large polymer dissolution, and it is suitable for manufacturing the spinning head of above-mentioned composite fibre.The composite fibre of the present invention has island region (42) and marine origin subregion (44), and marine origin subregion (44) are clipped by island region (42), and with specific width above.The composite spinning jete of the present invention has discharge plate, and the discharge plate has the tap aggregate built by following tap group：The marine origin subregion formed by extra large tap is formed with tap group and island tap group.

Description

Composite spinning jete and composite fibre, the manufacture method of composite fibre

Technical field

The present invention relates to for discharge the composite spinning jete of composite polymeric logistics that is made up of two or more polymer and The manufacturer of composite fibre, composite fibre obtained from carrying out melt spinning by using the composite spinning machine of the composite spinning jete Method.

Background technology

By combining two or more polymer, to replenish performance insufficient in the polymer of single component or assign The composite fibre of brand-new function is given largely to be developed due to the variation of purposes.

Island-in-sea type composite fiber as one of composite fibre is following fiber, when observing section, forms different two In being separated, certain polymer is dispersed in another polymer the polymer of the kind above, regards the former polymer as island And regard the polymer of the latter as sea.The former polymer is referred to as " island polymer " below, the polymer of the latter is referred to as " sea Polymer ".

Moreover, after melt spinning manufactures island-in-sea type composite fiber, can by being extra large polymer dissolution by easy dissolved element Only to make difficult dissolved element i.e. island polymer residue, the string diameter for obtaining single fiber is nano level superfine fibre.In dress material purposes In, flexible touch, superfine degree that general fiber can not obtain are shown, is applicable to dermatine, new sense of touch textile etc..Separately Outside, because fibrous septum is densification, so high-density fabric can be used as, windproof, hydrophobic motion dress material purposes is being needed In can also deploy.In addition, in industry material applications, because specific surface area increase, dust catching improve and can be applicable In high-performance filter etc., enter fine groove additionally, due to superfine fibre, wipe dirt, and be readily applicable to precision machinery Deng cleaning wiping cloth or precise finiss cloth etc..

Generally, composite polymeric logistics is formed in composite spinning jete, the gimmick for thus manufacturing composite fibre is referred to as compound Spin processes, polymer alloy method will be referred to as and the gimmick manufactured by the mutual melting mixing of polymer.

In polymer alloy method, superfine fibre can be manufactured in the same manner as composite spinning method, but in the control of fibre diameter On the limit be present, it is difficult to obtain uniform superfine fibre.In contrast, composite spinning method is formed by two kinds in composite spinning jete The composite polymeric logistics that polymer above is formed, can critically control composite construction.Therefore, high accuracy can be formed uniformly Silk section morphology aspect, superiority is higher than polymer alloy method.

In the composite spinning method, in order to which the silk section control that can be stablized, composite spinning jete technology are most important. Therefore, at present, miscellaneous motion has been carried out.

If the composite spinning jete technology relevant with island-in-sea type composite fiber is roughly divided into two classes, there is pipe method spinneret Head technology and method of salary distribution spinning head technology.

The typical example of pipe method spinning head is disclosed in patent document 1.Figure 15 represents the composite spinning jete of patent document 1 Partial enlargement longitudinal section.In addition, in the various figures, exist with it is stated that figure corresponding same reference numerals part In the case of, omit the description sometimes.

Pipe method spinning head shown in Figure 15 is made up of distributor 1, discharge plate 2 and contracting flowing plate 3, the distributor 1, which is provided with extra large polymer, imports stream 21, island polymer importing stream 22, pipeline 20 and extra large polymer distribution room 23, the row Ejecting plate 2 is provided with composition polymer tap 15, and the contracting flowing plate 3 is provided with spinning head tap 6.

In the spinning head, easy dissolved element is that extra large polymer is directed into extra large polymer from extra large polymer importing stream 21 Distributor chamber 23, the periphery full of pipeline 20.On the other hand, difficult dissolved element is that island polymer is imported stream 22 from island polymer Pipeline 20 is directed into, is discharged from pipeline 20.It is inserted into from the island polymer of the pipeline 20 discharge full of extra large polymer distribution room In extra large polymer in 23, the composite polymeric logistics that extra large polymer is coated to island polymer is formed.Then, the composition polymer flows through By composition polymer tap 15, composite polymeric logistics is collaborated each other, is discharged from spinning head tap 6, thus, turns into sea The composite fibre in island section.

In pipe method spinning head as above, by the way that the radical of the pipeline 20 of unit area is brought up into manufacturing limit, In the section of island-in-sea type composite fiber, the quantity of island component becomes more, can increase the radical of the superfine fibre after extra large polymer dissolution, Or the fibre diameter of superfine fibre can be reduced.But in the case where improving the radical of pipeline 20, because pipeline enclosure distance becomes Narrow, so as to which extra large polymer can not invade the central part of pipeline 20, the distributivity of extra large polymer deteriorates.Therefore, there is island polymerization The part that thing is not coated to by extra large polymer, especially in the case where carrying out spinning with high island polymer ratio, generation be present The situation at the mutual interflow of island polymer.In order to eliminate the situation, it is necessary to optimize the configuration of pipeline 20, point of extra large polymer is improved With property, the typical example of the solution countermeasure is disclosed in patent document 2 and patent document 3.

Figure 17 is the close-up plan view of the discharge plate used in patent document 2 and patent document 3.

In Figure 17 discharge plate, there is composition polymer tap 15, by setting the sea of non-configuring pipes 20 to polymerize Thing enters stream 11 (not having tap in the part), even if the quantity increase of tap, can also make the distribution of extra large polymer Property it is good, so as to equably integrally supplying extra large polymer to composition polymer tap group.Therefore, arranged even in composition polymer Portal the central part of group, and extra large polymer is existed between the polymer of island, can suppress the interflow of island polymer.Therefore, in patent In the spinning head technology of document 2 or patent document 3, even if being pipe method spinning head, it can also obtain the island more than the number of island and answer Condensating fiber.

On the other hand, in the case of increased in view of island number, method of salary distribution spinning head is effective technology.It is used as it Typical example, patent document 4 can be enumerated.Figure 16 is the close-up plan view of the discharge plate of the shape disclosed in patent document 4.

In Figure 16, in the case of on the basis of located at discharge Ban Mou islands tap 13, have each tap as follows The composition of configuration：In the island tap 13a adjacent with the island tap 13 of the distance between most short central and the island tap of benchmark In the common outer area encompassed of tangent line 30 of 2 of 13, the part at least in the presence of extra large tap 12.Therefore, in Figure 16 row In ejecting plate, extra large being forced property of polymer is configured between the polymer of island, can be prevented from island tap 13 and island tap 13a discharges Island polymer interflow.Therefore, in the case that adjacent island tap 13 is close to manufacturing limit level, due to can be with Prevent the interflow of island polymer, it is possible to the further row of the discharge island polymer of the unit cross-sectional area of increase discharge entrance hole The quantity portalled.

As above, in conventional spinning head technology, by carrying out various improvement, the island that can be manufactured more than the number of island is compound Fiber, in recent years, by being multiply according to the Dao Shuojiang islands polymer segments, as described above, can the company's of acquisition fibre diameter to receive The nanofiber of meter level.But in the technology that patent document 1~4 is enumerated, merely increasing the feelings of hole packed density etc. Under condition, the mutual distance of island component in the section of island-in-sea type composite fiber diminishes.Therefore, in the use for manufacturing superfine fibre In the process of solvent dissolution sea polymer, the extra large polymer being dissolved by the solvent can not be between the polymer of island or between superfine fibre Expeditiously discharge, the dissolution efficiency of extra large polymer reduces sometimes.Therefore, the time increase of complete dissolution sea polymer, especially Be the deterioration of nanofiber in the case of nanofiber to be obtained etc. be present, nanofiber aggregates with one another etc., cannot get nanometer The problems such as function that fiber is expected.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2001-192924 publications

Patent document 2：Japanese Unexamined Patent Publication 2009-91680 publications

Patent document 3：Japanese Unexamined Patent Application Publication 2012-518100 publications (say by U.S. Patent Application Publication No. 2010/205926 Bright book)

Patent document 4：Japanese Unexamined Patent Publication 2011-208313 publications

The content of the invention

Invent problem to be solved

As discussed above, it is desired to the island-in-sea type composite fiber of the composite spinning jete using the hole packed density for improving island tap Manufacture method.But as described above, because the dissolution that extra large polymer occurs in the dissolution of extra large polymer is bad, so in the presence of Make the problem of its reduction, turn into the obstacle of the manufacture of superfine fibre.Therefore, solving the problem industrially has important meaning Justice.Therefore, problem of the invention is, there is provided a kind of good sea of dissolution efficiency of the sea polymer in the dissolution of extra large polymer Island composite fibre, additionally, it is provided a kind of composite spinning jete for being suitable for manufacturing the island-in-sea type composite fiber.

Means for solving the problems

In order to solve the above problems, island-in-sea type composite fiber of the invention, the manufacture method of island-in-sea type composite fiber and compound spray Silk head has following composition.

(1) a kind of composite fibre, there is sea component and island component, when observing the section of composite fibre, the compound fibre There is region below in the section of dimension：

Be configured with sea component multiple island components island region,

The marine origin subregion of 1 or more than 2 for only being formed by sea component and being clipped by island region,

The subregional width of marine origin (H), more than be present in the island region and adjacent island component each other it Between distance (W) maximum.

(2) internal direction is led to from the top layer of the composite fibre according to foregoing composite fibre, the marine origin subregion.

(3) regularly configured according to foregoing composite fibre, the island component in the island region.

(4) composite fibre according to foregoing any one, when observing the section of the island-in-sea type composite fiber, sea component The ratio between the length (L) in region and the diameter (D) of composite fibre (L/D) are more than 0.25.

(5) composite fibre according to foregoing any one, when observing the section of the island-in-sea type composite fiber, sea component The width (H) in region is more than the maximum gauge (d) of island component.

(6) according to foregoing composite fibre, when observing section, at least one following marine origin subregion be present：Sea component The width (H) in region is more than the maximum gauge (d) of island component, and the subregional length of the marine origin (L1) is more than or equal to sea component The width (H) in region, the subregional length of marine origin (L1) are more than the 1/4 of the diameter (D) of composite fibre.

(7) composite fibre according to foregoing any one, when observing section, the subregional width of marine origin (H) and multiple The diameter (D) of condensating fiber meets following formula：

0.001 ＜ H/D ＜ 0.2.

(8) composite fibre according to foregoing any one, when observing section, the sectional area (Ac) of composite fibre and The subregional area of marine origin adds up to (As) to meet following formula：

0.05≤As/Ac≤0.35。

(9) composite fibre according to foregoing any one, when observing section, marine origin subregion is cross.

(10) a kind of manufacture method of superfine fibre, have extra large polymer from the composite fibre described in foregoing any one The process of dissolution.

(11) a kind of fibre, the fiber described in any of the above-described is included.

(12) a kind of fibre, the superfine fibre obtained by previous building methods is included.

(13) a kind of composite spinning jete, for the composition polymer discharge that will be made up of island polymer and extra large polymer, institute State spinning head and meet important document<1>With<2>：

<1>Composite spinning jete is built by distributor, discharge plate and contracting flowing plate,

The distributor is used to distribute each polymer；

The discharge plate is located at the downstream in the polymer spun outbound path direction of the distributor, and has multiple seas The tap of tap and at least one or more in multiple island taps and multiple composition polymer taps；

The contracting flowing plate imports positioned at the downstream in the polymer spun outbound path direction of the discharge plate with discharge Hole, the tap connection that the discharge entrance hole combines with any combination tap in following combination：The sea discharge The combining of Kong Hegai islands tap, the combination of the extra large tap and the composition polymer tap and the sea discharge The combination in hole, the island tap and the composition polymer tap；

<2>The discharge plate has the tap aggregate that is built by multiple taps, the tap aggregate be by Following tap group structure：The marine origin subregion formed by the extra large tap is formed with tap group and by (i)~(v) Any one formed the island tap group of at least more than one,

(i) the extra large tap and the island tap,

(ii) the composition polymer tap,

(iii) the extra large tap and the composition polymer tap,

(iv) the island tap and the composition polymer tap,

(v) the extra large tap, the island tap and the composition polymer tap.

(14) according to foregoing composite spinning jete, important document is also met<3>,

<3>The marine origin subregion forms and use tap group, from the periphery of the tap aggregate towards inside, with The mode that both sides clip the part of the island tap group is continuously configured.

(15) there are multiple composition polymers to discharge for the composite spinning jete according to foregoing any one, the distributor Hole, and be by formed with dispensing orifice and distributing trough or they at least one of distribution plate be laminated more than 1 and build , the dispensing orifice or the distributing trough and the extra large tap selected from the discharge plate or the island tap and described More than a kind of tap connection in composition polymer tap.

(16) there are multiple composition polymers to discharge for the composite spinning jete according to foregoing any one, the distributor There are multiple pipelines, extra large polymer to import stream and extra large polymer distribution room for hole, the composite spinning jete,

The multiple pipeline is disposed in the one-to-one position of composition polymer tap with the discharge plate 2, And for the island polymer to be supplied to polymer tap 15,

The extra large polymer imports stream and is used to supply extra large polymer,

The extra large polymer distribution room imports fluid communication with extra large polymer, and is disposed about the multiple pipeline,

The composition polymer tap of the discharge plate connects with the pipeline and the extra large polymer distribution room.

(17) composite spinning jete according to foregoing any one, the sea row of a part for the tap aggregate is formed Portal and be configured in each summit of n sides shape grid, the island tap for forming a part for the tap aggregate is configured in n The position of centre of gravity of side shape grid, for forming the marine origin subregion formation extra large tap of tap group, with The distance between centers of the hithermost extra large tap or the island tap is following to configure m on the imaginary circumference of radius The island tap, n and m meet any important document in (x)~(xii)：

(x) n=6, m=2

(xi) n=4, m=3

(xii) n=3, m=5.

(18) composite spinning jete according to foregoing any one, by the radius of the circumcircle of the tap aggregate When being set to R, untill being the inner side of the circle away from below center 0.5R from the outer thoughtful radius of the circumcircle, the marine origin subregion Domain formation is continuously configured with tap group in the form of both sides are clipped by the island tap group.

(19) composite spinning jete according to foregoing any one, for manufacturing the composite fibre described in foregoing any one.

(20) a kind of manufacture method of composite fibre, includes following process：Island polymer and extra large polymer, which are put into, to be made In the composite spinning jete with the spinning-drawing machine of the composite spinning jete described in foregoing any one, make island polymer and extra large polymer The process discharged from composite spinning jete and carry out spinning.

(21) according to the manufacture method of foregoing composite fibre, manufactured composite fibre is answering described in foregoing any one Condensating fiber.

In addition, the meaning of the term used in the present invention is as follows.

" dispensing orifice " refers to form hole by the combination of multiple distribution plates and realized in spinning for polymer on path direction Distribute the effect of polymer.

In the present invention, " distributing trough " refers to form groove by the combinations of multiple distribution plates and is spinning path with polymer The effect of distribution polymer is realized on the vertical direction in direction.Here, distributing trough can be slot, can also scrape out elongated Groove.

In the present invention, " polymer spun outbound path direction " refers to that each polymer flows to spinning head tap from distributor Principal direction.

" composition polymer tap " refer to close island polymer and extra large polymer with core sheath, side by side, stratiform, island shape or The tap of the circle-shaped composition polymer discharge collaborated.

" hole packed density " refers to lead by the number of island tap and the number sum of composition polymer tap divided by discharge The value for entering the sectional area sum in hole and trying to achieve.In addition, in the present invention, there is also the situation of only island tap, additionally, there are only There is the situation of composition polymer tap." diameter " when observing fibre section refers to In the case of circle with the area diameter of a circle of the same area of the figure.But only remain island polymerization for removing extra large polymer The fiber of thing, refer to the circumscribed diameter of a circle of fibre section.

When observing fibre section figure " " center " refers to position of centre of gravity.

" de- sea " in the present invention refers to the extra large polymer dissolution by composite fibre with solvent.

Invention effect

, can also even if the quantity of the island component of the unit cross-sectional area of composite fibre is more according to the composite fibre of the present invention Easily superfine superfine fibre can be obtained with solvent efficiently by extra large polymer dissolution.Moreover, answering according to the present invention Spinning head is closed, can easily manufacture above-mentioned composite fibre.

Brief description of the drawings

Fig. 1 is the outline longitudinal section of the composite spinning jete used in embodiments of the present invention.

Fig. 2 is the general of composite spinning jete used in embodiments of the present invention, filament spinning component and cooling device periphery Slightly longitudinal section.

Fig. 3 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Fig. 4 is the plan of the discharge plate used in embodiments of the present invention.

Fig. 5 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Fig. 6 is the partial enlargement longitudinal section of the discharge plate used in embodiments of the present invention.

Fig. 7 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Fig. 8 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Fig. 9 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 10 is the outline longitudinal section of the composite spinning jete used in embodiments of the present invention.

Figure 11 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 12 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 13 is the sectional view of the composite fibre of one of the present invention.

Figure 14 is the sectional view of the composite fibre of one of the present invention.

Figure 15 is the partial enlargement longitudinal section of the composite spinning jete of conventional example.

Figure 16 is the close-up plan view of the discharge plate of conventional example.

Figure 17 is the close-up plan view of the discharge plate of conventional example.

Figure 18 is the close-up plan view of the discharge plate used in another embodiment of the present invention.

Figure 19 is the partial enlarged drawing in the section of the composite fibre of the present invention.

Figure 20 is the sectional view of the composite fibre of one of the present invention.

Figure 21 is the sectional view of the composite fibre of one of the present invention.

Figure 22 is the sectional view of the composite fibre of one of the present invention.

Figure 23 is the sectional view of the composite fibre of one of the present invention.

Figure 24 is the sectional view of the composite fibre of one of the present invention.

Figure 25 is the sectional view of the composite fibre of one of the present invention.

Figure 26 is the sectional view of the composite fibre of one of the present invention.

Figure 27 is the sectional view of one of existing composite fibre.

Figure 28 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 29 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 30 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 31 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 32 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 33 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 34 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 35 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Figure 36 is the close-up plan view of the discharge plate used in embodiments of the present invention.

Embodiment

Below, the present invention is illustrated together with preferred embodiment.

The composite fibre of the present invention is as illustrated in Figure 13, it is characterised in that exists and island component 43 is configured with sea component 41 Island region 42 and the marine origin subregion 44 that is only formed by sea component 41.

As shown in figure 13, marine origin subregion 44 described in the present invention refers to, is only formed by extra large polymer, above-mentioned sea component The width (H) in region, which is more than, to be present in the region of island and the region of the maximum of the distance of adjacent island component to each other. In the composite fibre of the present invention, the marine origin subregion exists with the state clipped by the island region of composite fibre, is cut in observation 1 or 2 marine origin subregion described above during face be present.

As described above, a purpose of composite fibre of the invention be manufacture superfine fibre, formed the structure be in order to, even if Increase island packed density, the efficiency that the dissolution of extra large polymer is handled will not also reduced.It is arranged with conventional sea component more In the compound cross-section of individual island component, gradually carried out from the outer layer of composite fibre naturally using the processing of solvent.In extra large polymer Dissolution processing reach composite fibre inside untill before, island component is also affected by the solvent.Therefore, gained is superfine Fiber, which has quality, to be significantly reduced, or the problem of de- sea etc. can not be completed.

Therefore, such as the composite fibre of the present invention, it is conceived to the marine origin that setting is only made up of extra large polymer when observing section Subregion.That is, in the composite fibre of the present invention, when by the extra large polymer dissolution of composite fibre, with being present in island region In extra large polymer phase ratio, solvent is quickly by the subregional extra large polymer dissolution of marine origin.Therefore, solvent reach in early days it is compound The center of fiber, it is possible to shorten the dissolution time of extra large polymer.

Distance (the distance between island component of adjacent island component to each other in island region mentioned here：) and sea component W The width (H) in region can try to achieve as follows.

That is, composite fibre is embedded with embedding mediums such as epoxy resin, after cutting its cross section with slicer, passes through scanning electron Microscope (SEM), its cutting face is shot so that the overall multiplying power in section can be observed.Now, if implementing to contaminate with metallic compound Color, then it can make the poor contrast sharpening of island component and sea component.Can cutting from more than 10 selected at random composite fibres In the image of face, the subregional width of marine origin is determined using image processing software.Distance and sea component between island component mentioned here The width in region refer to using from image relative to the section of fiber axis vertical direction as section, in the image of the section Middle showed island component distance to each other and the subregional width of marine origin.Distance refers to in island area between the island component 2 adjacent island components, the minimum value of the distance between a certain island component and another island component in domain.The width of sea component is calculated as follows Go out.Imaginary marine origin subregion and the boundary line of island composition range.Imagination forms the point of boundary line, by each point to opposite direction Island composition and the beeline of the boundary line in island region.

Distance and the subregional width of marine origin are measured to decimal point the 2nd with a μm unit between the island component, by decimal point 2nd rounds up.Respectively at 10 extracted out at random more than carry out the operation of the above.For island component distance, using being surveyed The average value of fixed value.

When observing section as above, in the presence of marine origin subregion is with big width, in the molten of extra large polymer Go out the initial stage of processing, form crackle from the side of composite fibre towards central part, solvent easily invades the interior of composite fibre Portion.In addition, the crackle of the formation significantly propagates to the inside of composite fibre, divisible composite fibre.If by this way will be multiple Condensating fiber is divided into multiply, then the specific surface area of the composite fibre in the dissolution processing of extra large polymer in solvent increases Add, the dissolution rate of extra large polymer rises, and is suitable.Specific surface area mentioned here refers to the surface of unit fiber quality Product.

As the standard for showing this phenomenon, the diameter (D) of the subregional width of marine origin (H) and composite fibre is preferably full 0.001 ＜ H/D ＜ 0.2 of foot relation.If such model group, then extra large polymer is carried out in the flow liquid of liquid-flow dyeing machine etc. When dissolution is handled, during due to processing composite fibre by liquid stream physical stimulation, so as to the crackle that is temporarily forming as sea polymerize Thing dissolution processing progress and expand.Further, since the effect of above-mentioned liquid stream, if applying towards compression direction to composite fibre Power, then by physics Ground Split.From the point of view of the easness that easness, crackle inside solvent intrusion composite fibre are formed, H/D is bigger More suitable, therefore, H/D is preferably more than 0.01, and more preferably more than 0.03.On the other hand, from composite fibre and exist multiple The qualitative control of the homogenieity (such as diameter, shape) of section morphology of island component, cross-section etc. examined for easy aspect Consider, preferably less than 0.2.

In the overall viewpoint that the formation of such crackle is extended into composite fibre, the preferred subregional section of marine origin Product (As) has the ratio more than certain, preferably 0.05≤As/Ac relation relative to the sectional area (Ac) of composite fibre.Separately Outside, preferably in the scope of As/Ac≤0.35.In parameter as As/Ac, and more big then de- extra large efficiency is higher, but if Such scope, then it is few to be used to be formed the amount of the subregional extra large polymer of marine origin, due to that can also be supplied in the region of island pair Island section sufficiently extra large polymer is formed, so can be with the compound fibre in island of the high island polymer ratio manufacture present invention Dimension.In addition, except the homogenieity of above-mentioned island component, the easness of qualitative control, it is not required that optionally improve spinning head The difficulty of design etc..

The island region being present in the composite fibre of the present invention, refers to multiple island components in sea component be present as described above Region, but in the island region, preferably island component is regularly configured.

Regular configuration mentioned here refers in 4 close island components that connection is adjacent 2 as illustrated in Figure 19 (45- (a) (straight line at the center of 2 island components of connection) and 45- (b) in Figure 19 (are connected the straight line at the center of island component each other The straight line at the center of other 2 island components)) it is in parallel relation.Parallel relation mentioned here refers to above-mentioned two straight lines institute Into angle be less than more than 0 ° 5 °.In the evaluation of the parallel relation of island component, the situation phase with the subregional width of marine origin Together, in the section of captured composite fibre, for the position extracted at random, as described above at 20 more than by 2 straight line structures Into goniometry to decimal point the 1st, if by the value for rounding up and trying to achieve below the decimal point of the average value above-mentioned Scope, then in parallel relation.

In the island region of the composite fibre of the present invention, if island component is regularly arranged, produce in throwing with after The effect that the tension force of composite fibre is integrally equably undertaken by composite fibre section, throwing, aft-loaded airfoil are put in processing Greatly improve.Generally, in the case of island-in-sea type composite fiber, it is difficult to spinning is carried out with high spinning speed, but the present invention's In the case of island-in-sea type composite fiber, because island component is regularly configured, so even if with high spinning speed, it can also carry out Spinning.In addition, now due in the absence of stress concentration a part for fibre section situation, so excellent quality.

In order to improve the raising effect of the dissolution efficiency of extra large polymer, the marine origin in composite fibre of the invention is subregional The ratio between the diameter (D) of length (L) and composite fibre (L/D) is preferably more than 0.25 (referring for example to Figure 13).If in such model Enclose, then the initial stage handled in the dissolution of extra large polymer, due to being cracked in marine origin subregion, solvent invades wherein, So as to the specific surface area increase of the extra large polymer in solvent, therefore, the dissolution of efficient extra large polymer can be carried out. Because extra large polymer is dissolved by the processing of solvent.By the effect, extra large polymer result is brittle, but because To be formed by holding diffluent extra large polymer, so the initial stage in dissolution processing is brittle, with liquid-flow dyeing machine etc. In the case of carrying out dissolution processing, due to the physical stimulation by liquid stream, so as to simply form crackle.

For sample because marine origin is subregional brittle and caused by crackle formed, as long as the diameter and sea component of compound cross-section The ratio between the width in region can just show for more than 0.25, but more preferably L/D is more than 0.50.If that is, in such scope, In the progress that is handled with the 1/2 of composite fibre diameter crackle formed above, the crackle due to dissolution of initial stage of dissolution processing, Further stimulated by physics, so as to transmit the section of composite fibre crosscuttingly, composite fibre is finally divided into half. Under such circumstances, the segmentation number of the specific surface area handled by solvent and composite fibre square in ratio increase.Therefore, it is extra large The dissolution efficiency of polymer further improves.If for such viewpoint, the longer the better for the subregional length of marine origin (L), can The value maximum of implementation can be 1, can be enumerated as particularly preferred scope.

In addition, the subregional width of marine origin (H) in the composite fibre of the present invention is preferably greater than the maximum gauge of island component (d).Because the raising effect of the de- extra large efficiency brought by configuring marine origin subregion as the object of the invention, substantially Dependent on the subregional width of marine origin (H), but in the case where the width is more than the maximum gauge (d) of island component, due to solvent Intrusion, crackle form the obstruction that can be carried out well without being influenceed by island component, so being preferable.

In addition, in the composite fibre of the present invention, at least one following sea component preferably be present：The marine origin is subregional Width (H) is more than the maximum gauge (d) of island component, and the subregional length of marine origin (L1) is more than or equal to the marine origin subregion Width (H), the subregional length of marine origin (L1) for composite fibre diameter (D) more than 1/4.

In addition, the evaluation method of the diameter of the island component is as follows.That is, in the same manner as the situation of the subregional width of marine origin, The section of island-in-sea type composite fiber is shot, in the multifilament of composite fibre, is shot with the multiplying power of the observable island component of more than 150 Image.Determine the diameter for the island component of 150 extracted out at random from captured image.Island component diameter mentioned here is Refer in the image that will be shot by two dimension relative to the section of fiber axis vertical direction as section, with 3 points in the section Circumscribed imaginary diameter of a circle above.On the value of island component diameter, determined with nm units to decimal point the 1st, by decimal point Round up below.The diameter of 150 captured island components of investigation, using the maximum as the island component described in the present invention Maximum gauge (d).

In the composite fibre of the present invention, the maximum gauge (d) of the island component is preferably smaller than the subregional width of marine origin (H), in the viewpoint for the obstruction for suppressing to form above-mentioned crackle, H/d relation is more preferably more than 2.0.In addition, in the present invention Composite fibre in, the diameter of the island component is preferably 100~5000nm, if in the scope, has the de- sea effect of the present invention The raising effect of rate, and the superfine fibre for implementing the dissolution processing of extra large polymer turns into the pole with the high excellent specific property of quality Fine fibre.If fibre diameter in 100~5000nm scope, will not turn into the obstruction that the dissolution of extra large polymer is handled, except The subregional effect of marine origin of the present invention is significantly outside the pale of civilization, and can also obtain to have can not be reached by single spining technology The limit fineness superfine fibre.

The superfine fibre as caused by the composite fibre of the present invention, if its a diameter of less than 5 μm, with common fiber Soft sense of touch that (tens of μm) can not obtain, superfine degree.Using the characteristic, such as dermatine or high feel can be used as to take Dress materials'use.Moreover, also using the compactness of fibrous septum, form high-density fabric, and for need it is windproof or Hydrophobic motion dress material.In addition, the fiber through superfineization enters in stria, and catch specific surface area increase or fine fiber Between dirt in space.Therefore, high adsorptivity and dust catching are shown., can in industry material applications using the characteristic Cleaning wiping cloth or precise finiss cloth as precision machinery etc..Particularly to be used for IT grindings or wipe, due to requiring height Wiping properties etc., so the diameter of superfine fibre is more thin better, 100~1000nm model can be enumerated as preferred scope Enclose.In the composite fibre of the present invention, it can also turn into the island component and be less than 100nm, but be handled from the dissolution of extra large polymer In operability wait from the viewpoint of, the diameter of island component is preferably more than 100nm.

In superfine fibre described above and by the manufacture of its fibre formed, preferably applying flexibly compound fibre of the invention The fundamental characteristics of the superfine fibre of dimension, the mechanical characteristic due to that can make conventional difficulty etc. improves, or improves its superfine fibre beam Uniformity, so as to improve by the quality of its fibre formed.

Generally it is mostly to be dissolved into so that island polymer is difficult in the case of the composite fibre for the purpose of producing superfine fibre Point, the situation using extra large polymer as easy-soluble component.For example, there is island polymer for PET (PET), sea Polymer is the copolymerization PET of easy stripping property situation.In this case, the copolymerization PET and island polymer as extra large polymer Compare, there is the dissolution velocity high to solvent.But the inefficient of the dissolution processing in extra large polymer, extra large polymer are completely molten In the case of time length before going out, You Lian islands polymer is also by the situation of solvent disposal.Particularly, the straight of island component is being reduced In the case of footpath, the influence highly significant.Especially in the case where island component is μm level, because the specific surface area of island component carries Height, so as to have the situation of the reduction of the mechanical characteristic of superfine fibre beam, be configured in composite fibre outermost island component and It is configured at its diameter situation that equal quality does not reduce in the island component of internal layer.

In the composite fibre of the present invention, by configuring marine origin subregion as the present invention, so as to from extra large polymer The influence for the processing that the initial stage of dissolution processing starts solvent just feeds through to the inside of composite fibre, therefore, turns into conventional The problem of quality of the problem of composite fibre reduces is few.In addition, even if improving island packed density, can also be gathered by improving island Compound manufactures what island polymer was formed improving relative to the yield of the composite fibre of raw material relative to the ratio of extra large polymer Superfine fibre.In addition, the island polymer ratio is improved due to can expeditiously pass the stress of silk producing procedures (spinning, stretching) It is handed to island component, it is possible to which height generates the fibre structure of island component.Therefore, except the mechanics that can improve superfine fibre is special Property, progress can also be crystallized by the orientation of island component, to improve itself patience to solvent.

As above, the subregional presence of marine origin as important document of the invention, even if increase is in the past close for the island filling of problem Degree, the dissolution efficiency of extra large polymer will not also reduce.Therefore, superfineization can be carried out by archipelagoization, is gathered in addition by improving island The ratio of compound, the excellent superfine fibre of the fundamental characteristics such as mechanical characteristic can be stably manufactured with high production rate.For realizing So marine origin subregion of effect, if meeting scope given to this invention, also include Figure 13, Figure 14 figure and Figure 20~figure Illustrated embodiment in 26, and play its effect.Particularly, by marine origin subregion from the surface of composite fibre internally Direction is effective in the case of configuring.Further, since marine origin subregion exists with the sectional area ratio of certain degree, so as to crackle The segmentation of composite fibre caused by formation is efficiently carried out.In addition, composite fibre caused by if crackle is formed as expanding The viewpoint of segmentation, then island composition range of the invention preferably largo configured in the section of composite fibre.Wherein, preferably It is criss-cross configuration for marine origin subregion as shown in fig. 13 that.

The fracture strength of the island-in-sea type composite fiber of the present invention is preferably 0.5~10.0cN/dtex, and elongation is preferably 5~ 700%.Intensity mentioned here refers to that loading-elongation that multifilament is tried to achieve under conditions of shown in JIS L1013 (1999) is bent Elongation when line, value obtained by the loading value divided by initial titre when will be broken, so-called elongation refer to fracture divided by initial Value obtained by sample length.In addition, so-called initial titre refers to put down obtained by the quality of the unit length as repeatedly determining fiber Average calculates the value of every 10000m quality.In order to actually be made by property, tolerable fiber as the process of post-processing process Value, the fracture strength of island-in-sea type composite fiber of the invention is preferably more than 0.5cN/dtex.The higher limit that can be manufactured is 10.0cN/dtex or so.In addition, on elongation, if being also contemplated for the process of post-processing process by property, preferably 5% with On.The higher limit of the elongation for the object that can generally manufacture is 700%.Fracture strength and elongation can lead to according to intended applications The condition for crossing control manufacturing process is adjusted.

It is used to internal or external etc. general dress material in the superfine fibre that will be obtained by the island-in-sea type composite fiber of the present invention use During way, fracture strength is preferably 1.0~4.0cN/dtex, and elongation is preferably 20~40%.It is in addition, harsher in behaviour in service Motion dress material purposes etc. in, fracture strength is preferably 3.0~5.0cN/dtex, and elongation is preferably 10~40%.This is superfine Fiber is considered as cleaning wiping cloth or abrasive cloth uses in non-dress material purposes.In these purposes, fibre is aggravating below Pull side wiping object thing.It is therefore preferable that fracture strength is more than 1.0cN/dtex, elongation is more than 10%.Due to for this The mechanical characteristic of kind scope, so as to medium for example in erasing, no superfine fibre is broken and come off.

The present invention island-in-sea type composite fiber can be formed fiber batch packaging or tow, cut staple, cotton, fibrous nodules, rope, Various intermediate such as fine hair, fabric, non-woven fabrics, dissolution processing is carried out to extra large polymer and produces superfine fibre, formed various The fibre of various kinds.In addition, the island-in-sea type composite fiber of the present invention can not also be handled and directly used, it is poly- partly to remove sea Compound, or be removed the processing of island polymer etc., so as to which fibre be made.

As fibre, available for the general dress material such as jacket, skirt, trousers, underwear, motion dress material, clothing materials, The vehicle such as the inner products such as blanket, sofa, curtain, seat cushions Interior Parts, cosmetics, cosmetic mask, cleaning wiping cloth, healthy articles for use The environment such as product, battery separator, industry material applications or seam are removed Deng household use or abrasive cloth, filter, harmful substance The medical applications such as plying, support, artificial blood vessel, blood filter.

Below, referring to the drawings further to the present invention composite fibre manufacture method and the compound spinneret used can be manufactured Head is described in detail.

Fig. 1 is the summary sectional view of the composite spinning jete of one of embodiment of the present invention.Fig. 2 is the compound spinneret of the present invention First 7, the filament spinning component 8 used, cooling device 9 and its summary sectional view on periphery are merged with it.Fig. 4 is implemented as the present invention The plan for the discharge plate that one of mode uses, Fig. 5 is Fig. 4 close-up plan view.In addition, Fig. 3, Fig. 7, Fig. 8, Fig. 9, figure 11st, Figure 12, Figure 18, Figure 27~Figure 35 are the close-up plan views of the discharge plate used in the various embodiments of the present invention.Separately Outside, they are the skeleton diagrams for passing on the main points of the present invention, and the record in figure is simplified.In the composite spinning jete of the present invention, Hole and the quantity of groove and its size ratio etc. are not limited to illustrate, and embodiment can be coordinated to change.

Composite spinning jete 7 used in embodiments of the present invention is fixed on spinning as shown in Fig. 2 be installed in filament spinning component 8 In silk block 10.Cooling device 9 is arranged with composite spinning jete 7.Composite spinning jete 7 is as shown in figure 1, stack gradually for dividing Distributor 1 with each polymer, discharge plate 2 and contracting flowing plate 3 and form.In addition, as shown in figure 5, discharge plate 2 formed with Island tap 13 in discharge island polymer or extra large tap 12 for discharging extra large polymer, by island tap group and sea Composition range is formed forms tap aggregate 18 with tap group, and island tap Qun Shi islands tap 13 and sea are discharged Hole 12 forms what group formed, and marine origin subregion formation forms group with the only extra large tap 12 of tap group and formed.

Here, by the polymer of each composition of distributor distribution (not shown), from the island tap 13 shown in Fig. 5 or Extra large tap 12 is discharged, and the polymer interflow of each composition, forms composite polymeric logistics.Then, composition polymer stream passes through Fig. 1 institutes Discharge entrance hole 4, the contracting discharge orifice 5 for the contracting flowing plate shown, are discharged from spinning head tap 6.The composite polymeric logistics is from shown in Fig. 2 After spinning head tap 6 is discharged, the air-flow blown out by cooling device 9 cools and solidifies.Then, after finish is granted, as sea Island composite fibre batches.In addition, in fig. 2, using the ring-type cooling device 9 of the blowout air-flow into ring-type, but it can also use From the cooling device of unidirectional blowout air-flow.

Here, bad to dissolution when can suppress extra large polymer dissolution, the device for shortening extra large polymer dissolution time enters Row explanation.

Illustrated in discharge plate such as Fig. 5 used in the composite spinning jete of embodiment of the present invention, following tap group be present： The marine origin subregion that is formed by multiple extra large taps 12 forms with tap group and formed by any one of following (i)~(v) The tap group (hereinafter referred to as " island tap group ") for being used to form island region of at least more than one, by these taps Merge and form a tap aggregate.The formation of marine origin subregion is with tap group in the form of being clipped by island tap group Continuously configured.Here, the configuration of the island tap group formed by the combination of following (i) is exemplified in Fig. 5, example in Fig. 3 Show by the configuration of (ii) the island tap group formed, the island tap group formed by the combination of (iii) is exemplified in Fig. 9 Configuration, the configuration of the island tap group formed by the combination of (iv) is exemplified in Figure 11, the combination by (v) is illustrated in Figure 18 The configuration of the island tap group of formation.

(i) extra large tap 12 and island tap 13

(ii) composition polymer tap 15

(iii) extra large tap 12 and composition polymer tap 15

(iv) island tap 13 and composition polymer tap 15

(v) extra large tap 12 and island tap 13 and composition polymer tap 15

Thus, each polymer discharged from the island tap group of discharge plate and the formation of marine origin subregion with tap group exists Discharge after collaborating in entrance hole, discharged from spinning head tap, turn into the composite fibre with marine origin subregion and island region.

Here, as one of embodiments of the present invention, in the case where island tap group is as the configuration of (i), edge The flowing pair of polymer and can form the subregional principle of marine origin and illustrate.

Island polymer and extra large polymer are together discharged to downstream from the discharge plate 2 shown in Fig. 1.The polymer edge discharged That polymer spins path direction flowing, is widened in the vertical direction of path direction that spins with polymer, thus, adjacent Polymer collaborates each other, turns into composite polymeric logistics.Now, plate is discharged as shown in figure 5, setting the island row of only extra large tap 12 Portal group, the composite fibre that marine origin subregion 44 as shown in fig. 13 that to manufacture be present is effective.But by being discharged Polymer is moved to fill flow path space in a manner of broadening, so only separated by between island tap group as shown in figure 17 Distance, it is difficult to marine origin subregion 44 is formed in the section of composite fibre.In addition, in such as Figure 17 discharge plate, polymer Broadening become big.Therefore, the configuration of island polymer shifts etc. and the section destabilization of fiber, can not turn into formed with equal The composite fibre of even island component.

As shown in figure 5, island tap group is arranged on composite spinning jete in a manner of separating into 4, set therebetween It is effective to put extra large tap 12.In the discharge plate shown in Fig. 5, due to having sea component in the space for separating island tap group The extra large tap 12a in region, so as to suppress the broadening in above-mentioned island region, the destabilization of fibre section can be suppressed.

In the case of fig. 5, with extra large tap 12a with it is hithermost in close extra large tap 12 or island tap 13 The island row of less than 2 is configured on imaginary circumference of the distance between centers as radius, centered on extra large tap 12a between hole Portal 13, thus, form the marine origin subregion formation tap group for having gathered multiple extra large tap 12a.Such as Fig. 5, by with The form that the part of island tap group is clipped in both sides continuously configures marine origin subregion formation tap group, can be with Obtain the composite fibre with marine origin subregion 44 such as Fig. 3.In addition, in the discharge plate shown in Fig. 5, as island tap The configuration pattern in the hole of group, in each apex configuration sea tap 12 of 6 side shape grid, forming the hexagonal center of gravity of the grid Position configures island tap 13.Hole shown in Fig. 5 is configured to n=6, m=2, turns into extra large tap 12 and surrounds island tap 13 The configuration of surrounding.Therefore, in the case of island polymer ratio is increased, extra large polymerization is also there will necessarily be between the polymer of island Thing, the polymer interflow from adjacent island tap can be suppressed.

As the other configurations pattern of island tap group, Fig. 7 shows 4 side shape grid, and Fig. 8 shows 3 angular grid.

In the pattern shown in Fig. 7, n=4, m=3.In this case, due to the adjacent mutual distance of island tap Can be more closer than the configuration of 6 side shape grid shown in Fig. 5, it is possible to further improve hole packed density.Shown in Fig. 8 In pattern, n=3, m=5.In this case, compared with the situation of 4 side shape grid shown in Fig. 7, phase can further be realized Adjacent 13 mutual closeization of island tap.Therefore, it can further improve hole packed density.As above, as island tap group Configuration pattern, can by the shape grid at shape grid, 6 of 3 angular grid, 4 order improve hole packed density, still, due to That the throwing condition to island polymer ratio etc. produces limitation be present, it is advantageous to the section shape according to target composite fibre The configuration pattern of state decision bore.

Below, distributor is illustrated using Fig. 6.Fig. 6 is the partial enlargement longitudinal section for discharging plate.Distributor By be referred to as metering plate 16 slab and referred to as the thin plate of distribution plate 17 be laminated respectively more than 1 and form.The metering plate 16 With distribution plate 17 by alignment pin, by the center (core) of composite spinning jete 7 into setting in a manner of consistent.The metering plate 16 With distribution plate 17 screw or bolt etc. can also be used fixed.In addition, each sheetmetal is engaged by (diffusion engages) by thermo-compression bonding etc., It also is adapted for suppressing polymer from leakage etc. between part.

It is machined with Fig. 6 metering plate 16 for distributing island polymer and extra large polymer respectively and supplying to distribution plate 17 Flow passage groove or stream hole.The stream hole by assigning polymer certain stream crushing, can supply by polymer uniform to Positioned at the inflow stream of the distribution plate 17 of topmost.

Formed with distributing trough 51 and the distribution for distributing island polymer and extra large polymer respectively on a piece of distribution plate 17 Hole 52 or any one.The distributing trough 51 is in the direction vertical with polymer spun outbound path direction (left direction arrow and right in Fig. 6 To arrow) on guide polymer, dispensing orifice 52 has the guiding on polymer spun outbound path direction (lower direction arrow in Fig. 6) poly- The function of compound.Here, if the distribution plate 17 with dispensing orifice 52 and the distribution plate 17 with distributing trough 51 are alternately laminated, Then 1 distributing trough of the position in the downstream in the polymer spun outbound path direction is communicated to relative to 1 dispensing orifice 52, formation 51.Therefore, the stream of the racing formula for the multiple dispensing orifices 52 for forming the end for being communicated in distributing trough 51 is formed, can will be by measuring Polymer of the polymer uniform Ground Split for each composition that plate 16 distributes into more pettiness.

Below, as another embodiment of the present invention, Fig. 3 and compound spray using the close-up plan view of discharge plate Figure 10 of the outline longitudinal section of silk head, the situation of the configuration to (ii) illustrate.Discharge plate shown in Fig. 3 refers to that island is arranged Group of portalling is built by composition polymer tap.Shown in Fig. 3 is commonly referred to as pipe method spinning head, island tap group by Composition polymer tap 15 is built.As shown in Figure 10, the pipeline 62 formed with supply island polymer in distributor 64, confession Extra large polymer to extra large polymer imports stream 61 and the extra large polymer distribution room 63 connected with extra large polymer importing stream 61. Here, the pipeline 62 of distributor 64 is formed correspondingly to connect with the composition polymer tap 66 of island tap group It is logical.In addition, extra large polymer distribution room 63 is formed and composition polymer tap 66 and marine origin subregion formation tap The extra large tap 65 of group connects.From the island polymer that the pipeline 62 of island tap group is discharged with from the extra large row of polymer distribution room 63 Collaborate in the extra large polymer polymerizable compound within thing tap 66 gone out.Here, the composite polymeric logistics turns into Xin Wei islands polymer, sheath For the core sheath structure of extra large polymer.

On the other hand, supplied from extra large polymer distribution room 63 to the extra large tap 65 of marine origin subregion formation tap group Extra large polymer.The composition polymer discharged from island tap group from the sea that marine origin subregion formation tap group discharges with gathering Compound, collaborate below discharge plate 67.Here, arranged due to existing between polymerizable compound within logistics from the formation of marine origin subregion The extra large polymer of group of portalling discharge, so the subregional composite fibre of marine origin in cross section formed with the present invention can be manufactured.

Below, as another embodiment of the invention, using Fig. 9 to island tap group as the configuration of (iii) Situation illustrates.In Fig. 9 discharge plate, island tap group is by composition polymer tap 15 and the structure of extra large tap 12 Into.Each polymer supplied from distributor (non-icon) is allocated and supplied to each hole of discharge plate.Shown in Fig. 9 In the composition polymer tap 15 of island tap group, extra large polymer and island polymer interflow, composite polymeric logistics is formed simultaneously Discharge.In addition, only discharge extra large polymer in extra large tap 12.Moreover, the composition polymer tap from island tap group 15 and extra large tap 12 discharge each polymer, each polymer interflow, turn into the composite polymeric logistics with island form.Fig. 9 institutes The feature for the mode shown is in the tap group of island, in addition to composition polymer tap 15, is additionally provided with extra large tap 12. Therefore, in the composite polymeric logistics (core of the core sheath form formed by composition polymer tap 15：Island polymer, sheath：Sea polymerization Thing) around be configured with extra large polymer.Therefore, in the case of the composite fibre shown in Figure 13, that can be expanded between island component 43 This distance.Therefore, in the dissolution processing of extra large polymer, between solvent easily invades island component 43, extra large polymer can be shortened Dissolution time.In such embodiment, if, island polymer generally be present and collaborate each other in the ratio of increase island polymer Situation, but due between the polymer of island across many extra large polymer, so going out from the viewpoint at interflow for suppressing island polymer Send out as suitable embodiment.

Below, a further embodiment as the present invention, island tap group is carried out as the situation of the configuration of (iv) Explanation.Figure 11 is the close-up plan view for discharging plate.In Figure 11 discharge plate, island tap group is arranged by composition polymer Portal 15 and island tap 13 form.It is allocated from each polymer of distributor (non-icon) supply, supply to discharge plate Each hole.Here, in the composition polymer tap 15 of island tap group, extra large polymer collaborates with island polymer, and discharge is multiple Close polymer flow.In addition, island polymer is only discharged in island tap 13.The feature of mode shown in Figure 11 is in island tap In group, in addition to composition polymer tap 15, island tap 13 is also formed with.Therefore, it may be formed at the polymerization of core sheath form Logistics (core：Island polymer, sheath：Extra large polymer) around the composite polymeric logistics of island polymer be present.As a result, with Fig. 3 institutes The configuration of (ii) that shows is compared, and can improve hole packed density, therefore, in the section of composite fibre, can configure more islands into Point.

Below, as another embodiment of the present invention, island tap group is said as the situation of the configuration of (v) It is bright.Figure 18 is the close-up plan view for discharging plate.In Figure 18 discharge plate, island tap group is discharged by composition polymer Hole 15, extra large tap 12 and island tap 13 are formed.Each polymer supplied by distributor (non-icon) is allocated, and is supplied to To each hole of discharge plate.In the composition polymer tap 15 of island tap group, extra large polymer and island polymer interflow, row Go out composite polymeric logistics.Island polymer is only discharged in island tap 13, extra large polymer is only discharged in extra large tap 12.Figure 18 The feature of discharge plate be in addition to forming composition polymer tap 15 in the tap group of island, to be also formed with extra large tap 12 and island tap 13.Therefore, core sheath (core can be formed：Island polymer, sheath：Extra large polymer) polymer and island polymer it is extra large The composite polymeric logistics that polymer surrounds.Therefore, the quantity of the island component in composite fibre matching somebody with somebody than (iv) shown in Figure 11 Put more, the configuration than (iii) shown in Fig. 9 is few.On the other hand, the distance of island component to each other is than (iii's) shown in Fig. 9 Configuration is wide, and the configuration than (iv) shown in Figure 11 is narrow.Therefore, archipelagoization and the raising of the dissolution efficiency of extra large polymer turn into (iii) intermediate degree of configuration and the configuration of (iv).

Fig. 9, Figure 11, Tu18Zhong of pipe method spinning head are being applied flexibly, is showing and is formed by composition polymer tap 15 Composite polymeric logistics be island polymer and example that extra large polymer is core sheath construction, but not limited to this.The composite polymeric logistics Can also be arranged side by side, more stratiforms, island shape etc., can be diversely according to the distribution of each polymer of distributor, interflow state Formed.

The marine origin subregion of the present invention formed it is as shown in figure 12 with tap group, by the circumcircle of tap aggregate 18 Radius be set to R in the case of, untill the region within the outer thoughtful radius 0.5R of the circumcircle of tap aggregate 18, i.e., Make continuously to configure in the form of the both sides of tap group to clip the formation of marine origin subregion in the part of island tap group In the case of, the purpose of the present invention can also be realized.Configured in addition, dissolution is not limited to cross with tap group, or put Shape configuration, clathrate configuration, the configuration of river word are penetrated, emphasis is in the form of the part of island tap group and two side contacts here Configuration marine origin subregion, which is formed, uses tap group.

Below, with the compound spray of the invention shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Figure 10 and Figure 12 Silk head and discharge plate commonly describe shape of each part etc. in detail.

Composite spinning jete 7 shown in Fig. 1, shape when viewed from above are not limited to circle, or quadrangle or Polygon.In addition, the row of the tap aggregate 18 shown in the spinning head tap 6 or Fig. 4 of composite spinning jete 7 shown in Fig. 1 Row can according to the radical of island-in-sea type composite fiber, strand number, cooling device and change.It is ring-type in the cooling device 9 shown in Fig. 2 Cooling device in the case of, spinning head tap or tap aggregate can be made to turn into one or more columns per page and arrange cyclization Shape.In addition, in the case where the cooling device 9 shown in Fig. 2 is unidirectional cooling device, can be by spinning head tap or discharge Hole aggregate alternately arranges.

Each stream hole of polymer for discharging each composition can be any forms such as circle, polygon, star.Separately Outside, can be changed as follows according to embodiment, each stream hole：Make changes of section etc. along polymer spun outbound path direction.

Discharge entrance hole 4 spinning on path direction in polymer shown in Fig. 1, the setting one from below discharge plate 2 Fixed run-up section (approach zone), thus relaxes the current difference behind island polymer and the firm interflow of extra large polymer, and realization makes The stabilized effect of composite polymeric logistics.The aperture of the discharge entrance hole 4 is more than the tap aggregate for being disposed in discharge plate 2 Circumscribed diameter of a circle, and the section preferably to reduce the sectional area of the circumcircle of tap aggregate as far as possible with discharge entrance hole 4 The mode of the ratio between product is formed.As described above, in the case of formed with discharge entrance hole 4, can suppress from each of the discharge discharge of plate 2 It the broadening of polymer, can stabilize composite polymeric logistics.

Contracting discharge orifice 5 shown in Fig. 1, by by from discharge entrance hole 4 to the stream of spinning head tap 6 diminution angle [alpha] 50~90 ° of scope is set in, composite spinning jete 7 can be minimized, and the draw resonance of composite polymeric logistics can be suppressed etc. Wild effect, composite polymeric logistics can be stably supplied.

Below, the composite spinning jete with embodiments of the present invention commonly describes the manufacture method of composite fibre in detail.

The manufacture method of the composite fibre of the present invention can be implemented by known composite spinning machine, use answering shown in Fig. 1 The special compound cross-section that spinning head 7 is closed in the control present invention is preferable on this point.

Due to it is an object of the invention to manufacture the island-in-sea type composite fiber for producing superfine fibre, so polymerizeing as island Thing and extra large polymer, for example, can enumerate polyethylene terephthalate or its copolymer, PEN, poly- pair It is benzene dicarboxylic acid butanediol ester, poly terephthalic acid -1,3- propylene diesters, polypropylene, polyolefin, makrolon, polyacrylate, poly- The polymer of the fusible shaping such as acid amides, PLA, thermoplastic polyurethane.Particularly using polyester, polyamide as representative Polycondensation based polymer due to fusing point it is high, it is advantageous to.For the fusing point of polymer if more than 165 DEG C, then heat resistance is good, excellent Choosing.Waited in addition, inanimate matter, carbon black, dyestuff, the pigment such as titanium oxide, silica, barium monoxide can also be contained in the polymer The various additives such as toner, fire retardant, fluorescent whitening agent, antioxidant or ultra-violet absorber.It is in addition, de- extra large or de- in consideration , can be from polyester and its copolymer, PLA, polyamide, polystyrene and its copolymer, polyethylene, poly- in the case that island is handled The fusible shaping such as vinyl alcohol and more show in the polymer of ready dissolution and select than other compositions.It is excellent as easy-soluble component The copolyester that ready dissolution is shown in water solvent or hot water etc., PLA, polyvinyl alcohol etc. are elected as, from spinnability and letter From the viewpoint of singly being dissolved in the water solvent of low concentration, particularly preferably using polyethylene glycol, sulfoisophthalic acid sodium Homopolymerization or polyester, the PLA of combination copolymerization.In addition, in the viewpoint of de- sea property and the fibrillation of caused superfine fibre, The polyester that particularly preferably homopolymerization of sulfoisophthalic acid sodium or copolymerization form.

The combination of difficult solvent components and easy-soluble component exemplified above, as long as selecting indissoluble solution according to intended applications Composition, and select can be with the fusing points of difficult solvent components with the easy-soluble component that spinning is carried out under the spinning temperature of benchmark. Here, considering above-mentioned melt viscosity ratio, if adjusting the molecular weight of each composition etc., the island of island-in-sea type composite fiber can be improved The fibre diameter of composition and the homogenieity of cross sectional shape.In addition, superfine fibre is being produced by the island-in-sea type composite fiber of the present invention In the case of, from the viewpoint of the stability and mechanics physical property of the cross sectional shape of superfine fibre are kept, relative to for de- sea Solvent difficult solvent components and easy-soluble component dissolution velocity difference it is more big more preferred, can be made with 10~3000 times of scope For target, combination is selected from above-mentioned polymer.The poly- of superfine fibre is obtained as the island-in-sea type composite fiber by the present invention is adapted to The combination of compound, from the point of view of the relation of fusing point, as suitable example, can enumerate makes extra large polymer rubs to be copolymerized 1~10 Polyethylene terephthalate, the island polymer of your %5- sulfoisophthalic acid sodium be polyethylene terephthalate or The combination of PEN, extra large polymer is set to be PLA, island polymer is nylon 6, poly terephthalic acid -1,3- The combination of propylene diester or polybutylene terephthalate.

Spinning temperature when carrying out spinning to the island-in-sea type composite fiber used in the present invention is in two or more polymer Fusing point it is high or polymer that viscosity is high is shown more than the temperature of mobility.As the temperature of the display mobility, according to molecule Amount and it is different, but as long as being the setting below+60 DEG C of fusing point using the fusing point of the polymer as target.If its with Under, then due to not having polymer thermal decomposition etc. in spinneret or filament spinning component, can suppress molecular weight reduces, so it is preferred that.This The discharge rate of polymerization in the manufacture method of invention, as the scope that can stablize discharge, every tap can be enumerated as 0.1g/ points / min/hole~20.0g/ minutes/well.Now, preferably consider to can ensure that the pressure loss in the tap of discharge stability.Here The described pressure loss is using 0.1MPa~40MPa as target, preferably by the melt viscosity with polymer, discharge aperture, tap The relation of length determines the scope of discharge rate.In the manufacture method of the present invention, island polymer (difficult solvent components) polymerize with sea On the basis of the quality for each polymer that the ratio of thing (easy-soluble component) can be discharged by the unit interval, gather on extra large polymer/island The ratio of compound selects in the range of being 10/90~95/5.In the sea/island polymer ratio, from raising island polymer ratio Be suitable from the viewpoint of the productivity of superfine fibre.But the viewpoint of the long-time stability from island compound cross-section is come See, as the manufacture method by the present invention effectively and while stability is maintained manufacture composite fibre and superfine fibre Scope, the preferred scope of the island polymer ratio is 20/80~50/50.So, from the island of composite spinning jete discharge The cooled solidification of composite polymeric logistics, grants finish, is drawn by controlling the roller of peripheral speed, thus as the compound fibre in island Dimension.Here, as long as the hauling speed determines according to discharge rate and targeted fiber diameter, but in the manufacture method of the present invention In, preferably spinning speed is the scope of 100~7000m/ minutes.In the manufacture method of the present invention, arranged by changing spinning head Portal 6 shape, can not only form circle, the shape or hollow that can also be formed beyond the circle of triangle, flat etc..This Outside, the strand number of composite fibre can be the multifilament more than monofilament and 2 strands of 1 strand.Composite fibre through spinning is matched somebody with somebody from height To and make mechanical characteristic improve from the viewpoint of, can temporarily batch after be stretched, can also without temporarily batch and Continue to stretch.As the stretching condition, such as in the stretching-machine comprising more than one pair of roller, if by generally fusible Melt the fiber that the thermoplastic polymer of display of spinning is formed, then it is warm by being set as below glass transition temperature melt point above 1st roller of degree and the peripheral speed ratio of 2nd roller suitable with crystallized temperature, axially easily stretched in fiber, and it is fixed to carry out heat Type simultaneously batches, and can obtain the composite fibre with island-in-sea type composite fiber section as shown in Figure 7.

In addition, in the case where not showing the polymer of glass transition, as long as carrying out the dynamic viscoelastic of composite fibre The measure of (tan δ), select gained tan δ high temperature side peak temperature more than temperature as preparation heating-up temperature. Here, from stretching ratio is improved, from the viewpoint of improving mechanics physical property, the implementation multistage stretching process is also suitable means.

In order to obtain superfine fibre by the island-in-sea type composite fiber of the invention being achieved in that, in dissolvable easy-soluble component Solvent etc. in impregnate composite fibre and by easy-soluble component dissolution, remove, i.e. by taking off extra large process, can obtain by indissoluble solution The superfine fibre that composition is formed.It is copolymerization PET, the PLA that the copolymerization such as 5- sulfoisophthalic acid sodium form in easy dissolved element Etc. (PLA) in the case of, the aqueous alkalis such as sodium hydrate aqueous solution can be used.The compound of the present invention is handled as with aqueous alkali The method of fiber, as long as such as after forming fiber construct by composite fibre or by it, be impregnated in aqueous alkali.This When, if aqueous alkali is heated to more than 50 DEG C, due to the progress of hydrolysis can be accelerated, it is advantageous to.If in addition, contaminated using fluid Color machine etc. is handled, then once can be handled in large quantities, and therefore, productivity, is preferred from the viewpoint of industry 's.As described above, the manufacture method of the superfine fibre of the present invention is illustrated based in general melt spinning method, but certainly It can also be manufactured by meltblown and spun-bond process, furthermore, it is also possible to be manufactured by solution spinnings such as wet type and dry-and wet-type etc..

Embodiment

Embodiment is enumerated below the superfine fibre of the present invention is specifically described.The evaluation of embodiment and comparative example passes through Following methods is carried out.

A. intrinsic viscosity (IV)

Using o-chlorphenol as solvent, determined at 25 DEG C.

B. the melt viscosity of polymer

By vacuum drier, granular polymer is turned into below moisture rate 200ppm, pass through Toyo Seiki キャピログラ Off 1B, rate of straining is periodically changed, determine melt viscosity.In addition, measurement temperature is same with spinning temperature, 1216s has been recorded in embodiment or comparative example^-1Melt viscosity.Subsidiary one carries, from plunging the sample into after heating furnace to measure Start to be set to 5 minutes, and be measured under nitrogen atmosphere.

C. fiber number

In the case of island-in-sea type composite fiber, 100m quality is determined, fiber number is calculated by being multiplied by 100 times.In addition, For from superfine fibre obtained from the extra large polymer of composite fibre dissolution more than 99%, determining 10m quality, being multiplied by 1000 times and calculate fiber number.In addition, the weighing of these samples is carried out under 25 DEG C of temperature, humidity 55%RH environment.

Same operation is repeated 10 times, by its simple average value in terms of dtex units, decimal point the 2nd is rounded up Income value is as fiber number.The reduction rate of the dissolution rate of extra large polymer and sample (following formula) is made in the judgement of the dissolution of extra large polymer With value, to be evaluated by the reduction rate of sample.

Reduction rate (%)=(example weight of example weight/dissolution before processing after 1- dissolutions processing) × 100

D. the mechanical characteristic of fiber

To composite fibre and superfine fibre, オリエンテック societies cupping machine " テ Application シロ Application " (registration is used Trade mark) UCT-100 types, it is bent that stress-strain is determined under conditions of the sample length, the draw speed of 100%/minute in 20cm Line.Loading during fracture is read, the loading divided by initial titre are calculated into intensity.Strain during fracture is read, calculates and removes Elongation is used as using the value of sample length.The unit of intensity is cN/dtex, and the unit of elongation is %, is evaluated.Any value The operation is repeated 5 times in every level, obtains the simple average value of the result of gained.Intensity is by the 2nd four house five of decimal point Enter the value of gained, elongation is by the value for the gained that rounded up below decimal point.

E. each parameter (composite fibre diameter D, composite fibre sectional area Ac, the island component of the cross-section of composite fibre Distance W, sea component peak width H, sea component zone length L, the subregional total sectional area of marine origin between maximum gauge d, island component As.Adjacent island component depth of parallelism θ)

The island-in-sea type composite fiber obtained with epoxy resin embedding, with Reichert societies FC4E type freezing microtome section systems Freezing, and with possess diamond tool Reichert-Nissei ul tracut N cut after, with (strain) キーエ Application ス systems VE-7800 types SEM (SEM) shoots the section of composite fibre to the cutting face.

Using image processing software (WINROOF) respectively to composite fibre diameter D, island component from image selected at random Maximum gauge d, distance W, sea component peak width H, sea component zone length L and adjacent island component depth of parallelism θ between island component Evaluated.

In addition, for the maximum gauge d of island component, with the multiplying power shooting image of the observable island component of more than 150, survey The island component diameter of fixed 150 island components extracted out at random from captured image.It is mono- with nm on the value of island component diameter Position-finding will round up to decimal point the 1st below decimal point.The diameter of the captured island component of 150 of investigation, by it Maximum gauge d of the maximum as island component.

In addition, for distance W, sea component peak width H and sea component zone length between composite fibre diameter D, island component L, the composite fibre of more than 10 in multifilament selected at random is observed, from cross-sectional image, is determined with a μm unit to decimal point the 2nd Position, is rounded to decimal point the 1st.Respectively at 10 more than carry out above operation, obtain simple number average value.According to this Composite fibre diameter D, the sea component peak width H and sea component zone length L of gained, try to achieve every 1 composite fibre respectively The composite fibre sectional area Ac and subregional total sectional area As of marine origin.

The adjacent island component depth of parallelism is the index for the configuration rule for representing island component.As illustrated in Figure 19, close 4 island components in, will connect adjacent 2 island components center straight line each other (45- (a) in Figure 19 (and 2 islands of connection into Point center straight line 1) and 45- (b) (straight line 2 at the center of other 2 island components of connection)) angulation θ is as adjacent The island component depth of parallelism.In addition, measure, using the composite fibre of more than 10 in multifilament selected at random as object, observation is each multiple More than at the 10 of condensating fiber, simple number average value is obtained.

F. the stripping property of extra large polymer

The project, which is that evaluation marine origin is subregional, has the effect brought.To the composite fibre of acquisition under each spinning condition Weaved, the knitted fabric of gained is impregnated in the de- sea bath (bath raio 1 full of 80 DEG C of the weight % aqueous solution of sodium hydroxide 3: 100 (knitted fabrics:Solvent)) in 15 minutes, make extra large polymer dissolution.Bath raio mentioned here refers to the quality of sample and solvent Than bath raio 1:100 represent to implement dissolution processing with the solvent of 100 times of quality of sample.

After the polymer of dissolution sea, moisture removal is removed, the sample that dissolution has been handled is dried in 60 DEG C of air drier. The quality of the dissolution of the sample before and after the processing is determined under 25 DEG C of temperature, humidity 55%RH environment, reduction rate is calculated according to following formula (%).By the reduction rate calculated, with the extra large polymer stripping property of 3 following evaluating combined fibers of grade.

The stripping property evaluation ＞ of ＜ seas polymer

It is excellent：Reduction rate is the scope of extra large polymer ratio (%) ± 5 (%)

It is good：Reduction rate is -5 (%) extremely -10 (%) scopes of extra large polymer ratio (%)

It is bad：Reduction rate for extra large polymer ratio (%) -10 (%) below.

G. the evaluation that comes off of the superfine fibre (island component) during the dissolution processing of extra large polymer

The composite fibre obtained under each spinning condition is weaved, prepares the knitted fabric obtained by 10g, full of 80 DEG C the weight % aqueous solution of sodium hydroxide 3 it is de- sea bath (bath raio 1:100) by more than 99% extra large polymer dissolution in.

Bath raio mentioned here refers to the mass ratio of sample and solvent, bath raio 1:100 represent with 100 times of matter of sample quality The solvent of amount implements dissolution processing.In addition, the judgement of the dissolution for extra large polymer, by the dissolution rate of extra large polymer and sample Reduction rate (following formula) is evaluated as with value by the reduction rate of sample.

Come off to confirm superfine fibre whether there is, carry out following evaluations.

The solution of the dissolution processing of the extra large polymer of 100ml progress is gathered, makes the solution by retaining 0.5 μm of particle diameter Glass fiber filter paper.By filter paper before and after the processing determined under 25 DEG C of temperature, humidity 55%RH environment dry mass difference Lai Judge superfine fibre whether there is to come off.

The evaluation ＞ that comes off of ＜ superfine fibres

It is excellent：It is of poor quality to be less than 3mg

It is good：It is of poor quality for 3mg less than 7mg

Can：It is of poor quality for 7mg less than 10mg

Can not：Of poor quality is more than 10mg.

[embodiment 1]

Using as the intrinsic viscosity of island polymer (IV) 0.63dl/g polyethylene terephthalate, (PET meltings are viscous Degree：The copolymerization 5.0 moles of % 5- sulfoisophthalic acid sodium of IV0.58dl/g 120Pas) and as extra large polymer PET (be designated as below " and copolymerization PET1 ", melt viscosity：After 140Pas) being melted respectively at 290 DEG C, measured, make it Flow into the filament spinning component of the composite spinning jete 7 for being assembled with present embodiment shown in Fig. 2, melting discharge island composition polymer Stream.On the basis of the polymer quality of the unit interval of input, island polymer ratio is 50/50.By the composite polymeric of discharge Finish is granted after logistics cooling and solidifying, is batched with the spinning speed of 1500m/ minutes, obtains 150dtex-15 silks (single hole discharge rate 2.25g/ minutes) non-stretched fiber.

The non-stretched fiber batched is carried out to 3.0 times of stretchings between 90 DEG C and 130 DEG C of roller is heated to, turns into 50dtex- The composite fibre of 15.Here, using the Fig. 6 used in embodiment 1 shown in method of salary distribution spinning head.In plate 2 is discharged, with The hole of 6 side shape grid configuration conditions (i) illustrated in Figure 28, hole packed density is set to 1.5 (individual/mm²).Here, will discharge The radius of the circumcircle of hole aggregate is defined as " radius R ".(" radius R " is in definition same as below).

In discharge plate used in embodiment 1, from the outer thoughtful radius 0.7R of the circumcircle of tap aggregate circle Untill contour, the island tap group at by 4 configures marine origin subregion formation tap group in the form of clipping.

As described in table 1, in the section of the composite fibre of gained, formed with the sea component at 4 as illustrated in Figure 14 figures Region 44.The sectional observation result is as described in table 1, it is known that obtains the composite fibre described in the claims in the present invention 1.Should The composite fibre of acquisition has 2.5cN/dtex intensity, 34% elongation and the mechanics spy in high-order processability no problem Property.The stripping property of sea component is good (good).Efficiency during the de- sea processing improve as a result, the mechanical characteristic of superfine fibre With excellent characteristic (intensity：2.4cN/dtex, elongation：45%) the coming off for superfine fibre when, taking off extra large (comes off and commented less Valency：It is good).Table 1 shows the evaluation result of throwing condition and composite fibre and superfine fibre.

[embodiment 2]

Make the island tap 13 that is illustrated in Figure 29 and extra large tap 12 turn into 4 side shape grid, hole packed density be 2.0 (it is individual/ mm²), in a manner of similarly to Example 1, using being assembled with the part of island tap group to clip the sea component at 4 Region forms the composite spinning jete of the discharge plate configured with the form of tap group, in addition, all real according to embodiment 1 Apply.In example 2, similarly to Example 1, thus, there is good sea formed with marine origin subregion in compound cross-section Polymer stripping property (extra large polymer stripping property：It is good), superfine fibre when de- extra large comes off that few (come off evaluation：It is good).Table 1 is shown The evaluation result of throwing condition and composite fibre and superfine fibre.

[embodiment 3]

As illustrated in Figure 30, with 3 angular grid configuration island taps 13, and the extra large tap 12 of configuration, by hole packed density It is set to 3.0 (individual/mm²), similarly to Example 1, one of the island tap group at 4 is clipped in both sides using being assembled with Point form configuration marine origin subregion form the composite spinning jete of the discharge plate with tap group, in addition, all with reality The same mode of example 1 is applied, obtains composite fibre.

In the section of the composite fibre of embodiment 3,4 marine origin subregions as illustrated in Figure 14 figures be present.These seas Composition range, when observing section from the upper, right, lower and left towards center position of the surface of fiber, but it is introduced into center. It is shaped as generally rectangular direction.In addition, the cross section parameter of composite fibre as described in table 1, meets the compound fibre of the present invention The important document of dimension.In embodiment 3, although further increasing island packed density, have equal with embodiment 1 and embodiment 2 Good extra large polymer stripping property (extra large polymer stripping property：It is good), although further reducing the diameter of superfine fibre, take off Superfine fibre when extra large comes off that still few (come off evaluation：It is good).Table 1 shows throwing condition and composite fibre and superfine fibre The evaluation result of dimension.

[embodiment 4]

Composite spinning jete used in embodiment 4, using pipe method spinning head as shown in Figure 10 is utilized, hole is filled Density is set to 1.2 (individual/mm²), and be assembled with shown in Figure 31 discharge plate composite spinning jete, in addition, all with reality Apply the same mode of example 1 and obtain composite fibre.

The composite fibre of embodiment 4 its section as shown in Figure 14 figures formed with 4 at marine origin subregion.In addition, compound fibre It is described in the cross section parameter such as table 1 of dimension, meet the important document of the composite fibre of the present invention.In example 4, although with good Extra large polymer stripping property (extra large polymer stripping property：It is good), but compared with Example 1, the island component in island region is configured to Most close filling, completely de- sea need few time.Therefore, although superfine fibre when de- extra large comes off to have and some increased inclined To, but (come off the level to have no problem evaluation：Can).Further, since the influence and mechanical characteristic and the implementation of superfine fibre Example 1 reduces a little when comparing, but it is also level (intensity 1.8cN/dtex, the elongation to have no problem in practical 37%).Table 1 shows the evaluation result of throwing condition and composite fibre and superfine fibre.

[embodiment 5]

As shown in figure 12, untill on the circumference for reaching radius 0.5R in a manner of configure marine origin subregion formation discharge Kong Qun, and it is 1.4 (individual/mm that use, which is assembled with hole packed density,²) discharge plate composite spinning jete, in addition, with reality Apply the same mode of example 1 and obtain composite fibre.

The composite fibre of embodiment 5 its section as shown in Figure 14 figures formed with 4 at marine origin subregion.Composite fibre is cut It is described in face parameter such as table 1, meet the important document of the composite fibre of the present invention.In embodiment 5, due to reach radius 0.5R Circumference on untill mode configure marine origin subregion formation tap group, so marine origin subregion is compared with Example 1, Extend to the inside of composite fibre and exist, although composite fibre diameter D is with the ratio between the subregional width H of marine origin (H/D) 0.03 and, but extra large polymer stripping property very excellent (extra large polymer stripping property equal with embodiment 1：It is excellent).In embodiment 5 In sample, handled 5 minutes in the case where evaluating same dissolution treatment conditions with extra large polymer stripping property, the sample after observation processing Superfine fibre beam, as a result because composite fibre is divided into multiply formed with the influence of crackle in composite fibre, it is believed that because being somebody's turn to do Effect and extra large polymer stripping property improve.Further, since the processing time required for completely de- sea can be shortened, so as to superfine fibre Come off hardly occur (come off evaluation：It is excellent), there is the intensity of superfine fibre also excellent characteristic (intensity 2.6cN/dtex Elongation 57%).The elongation throwing condition of table 1 and the evaluation result of composite fibre and superfine fibre.

[embodiment 6]

In addition to island polymer ratio is set into 80%, composite fibre is obtained in a manner of similarly to Example 1.

The composite fibre of embodiment 6, its section is as shown in Figure 14 figures formed with marine origin subregion at 4.Composite fibre is cut It is described in face parameter such as table 1, meet the important document of the composite fibre of the present invention.In embodiment 6, by increasing island polymer ratio Rate, the mechanical characteristic of composite fibre greatly improve (intensity 3.3cN/dtex, elongation 31%) compared to embodiment 1.Embodiment 6 In, in the silk producing procedures of spinning or stretching etc. or in the manufacturing procedure of knitted fabric etc., fracture of wire etc., product will not also occur It is of fine quality different.In addition, although island polymer ratio is improved to 80%, but because the subregional effect of marine origin of the feature of the present invention Fruit, and extra large polymer stripping property has good performance (extra large polymer stripping property：It is good).Except such extra large polymer stripping property Outside, in silk producing procedures, the fibre structure of island component is also highly formed, therefore, does not have coming off for superfine fibre (de- when de- extra large Fall evaluation：It is excellent), superfine fibre also has excellent mechanical characteristic (intensity 3.1cN/dtex, elongation 40%).Table 1 is shown The evaluation result of throwing condition and composite fibre and superfine fibre.

[embodiment 7]

In addition to island polymer ratio is set into 20%, composite fibre is obtained in a manner of similarly to Example 1.

The composite fibre of embodiment 7, its section is as shown in Figure 14 figures formed with the marine origin subregion at 4.In addition, compound fibre It is described in the cross section parameter such as table 1 of dimension, meet the important document of the composite fibre of the present invention.In embodiment 7, gathered by reducing island Compound ratio, the ratio between composite fibre diameter D and the subregional width H of marine origin (H/D) increase to 0.25, and extra large polymer stripping property is non- Chang Youyi (extra large polymer stripping properties：It is excellent).In the same manner as the situation of embodiment 5, evaluated equally with extra large polymer stripping property Handled 5 minutes under dissolution treatment conditions, the superfine fibre beam of the sample after observation processing, as a result composite fibre has been divided into Multiply, it is most of to have produced superfine fibre.On the other hand, in superfine fibre, by setting low island polymer ratio, island The fibre structure of composition forms insufficient, or somewhat increases than embodiment 1 at the aspect that comes off of superfine fibre, but be practical upper nothing (come off the level of problem evaluation：Can).Table 1 shows the evaluation result of throwing condition and composite fibre and superfine fibre.

[comparative example 1]

Island tap and extra large tap is set to turn into 6 side shape grid similarly to Example 1, and use is assembled with and does not configure sea Composition range forms the composite spinning jete of the discharge plate with tap group, in addition, completely in a manner of similarly to Example 1 Obtain composite fibre.

In the composite fibre of comparative example 1, due to not configuring marine origin subregion formation tap group, so in its section The marine origin subregion of the feature of the present invention is not formed, and it is compound to obtain so-called island as in the past as illustrated in Figure 27 Fiber.

In comparative example 1, although obtaining the mechanical characteristic substantially equal with embodiment 1 (intensity 2.3cN/dtex, elongation 32%), but because the dissolution of extra large polymer is little by little carried out from the outermost layer of composite fibre, so extra large polymer stripping property is significantly Reduce (extra large polymer stripping property：It is bad).In the same manner as the situation of embodiment 5, evaluated equally with extra large polymer stripping property Handle the sample 5 minutes of comparative example 1 under dissolution treatment conditions, the superfine fibre beam of the sample after observation processing, as a result compound fibre The sea component dissolution on dimension only top layer, de- sea are not almost carried out also.Due to the influence, the sample for comparative example 1 is, it is necessary to significantly prolong The time untill completely de- sea is grown to, the island component near the outermost layer of composite fibre is as a result configured at and is also handled by solvent, seen That sees many superfine fibres comes off that (come off evaluation：Can not).Therefore, the mechanical characteristic of superfine fibre is greatly reduced than embodiment 1 (intensity 1.8cN/dtex, elongation 16%), when observing the superfine fibre beam, the superfine fibre frittered fluffs, and quality is not excellent. Table 1 shows the evaluation result of throwing condition and composite fibre and superfine fibre.

Table 1

[comparative example 2]

Island tap and extra large tap is set to turn into 6 side shape grid similarly to Example 1, and use is assembled with and does not configure sea Hole packed density is set to 3.0 (individual/mm by composition range formation with tap group²) discharge plate composite spinning jete, and will Island polymer ratio is set to 80%, in addition, composite fibre is obtained in a manner of similarly to Example 1.

In the composite fibre of comparative example 2, due to not configuring marine origin subregion formation tap group, so as in its section The marine origin subregion of the feature of the present invention is not formed, and compared with comparative example 1, island number increases to 2 times, has island component in compound fibre By the cross section structure of most close filling in the section entirety of dimension.

In comparative example 2, in terms of the mechanical characteristic of composite fibre, although with more excellent characteristic (intensity 3.3cN/dtex, elongation 33%), but be the structure of island component compact configuration, due to the extremely difficult progress of the dissolution of extra large polymer, from And extra large extremely low (the extra large polymer stripping property of polymer stripping property：It is bad).In the same manner as the situation of embodiment 5, with extra large polymer The sample of comparative example 2 is handled under the same dissolution treatment conditions of stripping property evaluation 5 minutes, the fiber of the sample after observation processing Beam, the as a result dissolution of extra large polymer are not almost carried out, and composite fibre almost maintains the state of before processing.In the feelings of comparative example 1 Under condition, the position of superfine fibre is partly produced due to seeing, so as to compared with comparative example 1, the extra large polymer of comparative example 2 it is molten Going out property further reduces.

Due to the influence, hence for the sample of comparative example 2, even if extending the dissolution time of extra large polymer, also only obtain Extra large polymer residue stops when the processing by sodium hydrate aqueous solution reaches 2 hours in the state of the inside of composite fibre. Confirm coming off for superfine fibre, as a result see that (come off evaluation for many coming off：Can not).Investigate the power of this 2 hours processing samples Learn characteristic for reference, as a result mechanical characteristic is very low, and quality is not excellent.Table 2 shows throwing condition and composite fibre and pole The evaluation result of fine fibre.

[comparative example 3]

Except the discharge plate for not configuring marine origin subregion formation tap group using being assembled with is as being illustrated Figure 10 Outside pipe method spinning head, composite fibre is all obtained in a manner of similarly to Example 1.

The composite fibre of comparative example 3 does not form the marine origin subregion of the feature of the present invention, with reality in the same manner as comparative example l Apply example 1 to compare, island component is configured from the center of composite fibre with concentric circles, and adjacent island component depth of parallelism θ is 25 °.

Although the composite fibre of comparative example 3 does not have the problem of special in spinning process, significantly sent out in stretching process Raw fracture of wire.On the other hand, although the mechanical characteristic of composite fibre has inequality, but (intensity 2.5cN/dtex, stretches for good result Long rate 38%), because distance is big between island component, so as to level (the extra large polymer stripping property that extra large polymer stripping property is no problem： It is good).But as described above, in addition to the quality of composite fibre is not excellent, also as not being the regular island component described in the present invention Configuration, so the limit be present in terms of the High Level of the fibre structure of island component, when completely de- extra large, it is seen that a large amount of superfine fibres Dimension comes off that (come off evaluation：Can not).Therefore, compared with Example 1, (intensity is greatly reduced in the mechanical characteristic of superfine fibre 1.5cN/dtex, elongation 13%), poor quality.Table 2 shows the evaluation knot of throwing condition and composite fibre and superfine fibre Fruit.

[comparative example 4]

The pipeline for the discharge plate for not configuring marine origin subregion formation tap group using being assembled with identically with comparative example 3 Mode spinning head, and island polymer ratio is set to 70%, in addition, all answered in a manner of similarly to Example 1 Condensating fiber.It may be mentioned that in comparative example 4, spinning is implemented with 80% island polymer ratio, but because island component melts each other It is viscous, so as to which compound cross-section crumbles, spinning is carried out so island polymer ratio is reduced to 70%.

The composite fibre of comparative example 4 does not form the marine origin subregion of the feature of the present invention in the same manner as comparative example 3, compared with Example 3 is compared, due to improving island polymer ratio, so as to which island component is closely aligned on the section of composite fibre.Moreover, phase Adjacent island component depth of parallelism θ is 17 °.

The mechanical characteristic of the composite fibre of comparative example 4, although there is inequality in the same manner as comparative example 3, relatively better (intensity 2.8cN/dtex, elongation 31%), by the way that island component is closely aligned, the dissolution of extra large polymer can not be carried out expeditiously, Even if compared with the embodiment 6 of island polymer ratio high 10%, extra large polymer stripping property also reduces (extra large polymer stripping property：No It is good).Therefore, in the composite fibre of comparative example 4, compared with Example 6, dissolution processing time of extra large polymer need 2 times with On, it is seen that a large amount of superfine fibres come off that (come off evaluation：Can not).Therefore, fluffing etc., quality drop are seen in superfine fibre It is low, in terms of mechanical characteristic, compared with Example 6, also it is greatly reduced (intensity 1.7cN/dtex, elongation 18%).Table 2 is shown Result.

[comparative example 5]

, will in the pipe method spinning head for not configuring marine origin subregion formation tap group identical with comparative example 3 Island component is arranged in equilateral triangle clathrate with pipeline group, composition polymer be present using assembling is such just like illustrated in Figure 17 Tap 15 and the composite spinning jete for being provided with the discharge plate 11 (but here without tap) into stream of extra large polymer, in addition Island polymer ratio is set to 80%.The condition is according to the method disclosed in patent document 2.In addition to being set to above-mentioned condition, Composite fibre is obtained in a manner of similarly to Example 1.

In comparative example 5, although implementing spinning with 80% island polymer ratio, it is mutual molten that island component can be suppressed It is viscous, form island compound cross-section.

But in comparative example 5, it is not provided with the marine origin subregion formation tap group described in the present invention.Therefore, non-shape Into the marine origin subregion of the feature of the present invention, in compound cross-section universe, island component is closely formed.Adjacent island component is parallel It is 23 ° to spend θ.

But island component is closely aligned by the composite fibre of comparative example 5, the dissolution of extra large polymer is not in progress, with implementation Example 6 compares, and (extra large polymer stripping property is greatly reduced in the stripping property of extra large polymer：It is bad).Therefore, in comparative example 5, compared with Similarly, compared with Example 6, the dissolution processing time of extra large polymer needs more than 2 times to example 4, sees a large amount of superfine fibres in addition Dimension comes off.In addition, in the sample after observing extra large polymer dissolution, partly observe that sea is poly- in the central part of composite fibre Polymer component etc., the dissolution of extra large polymer do not complete.Fluffing etc. is seen in the superfine fibre beam of comparative example 5, feel is poor.In power In terms of learning characteristic, compared with Example 6, comparative example 5 is also greatly reduced (intensity 1.9cN/dtex, elongation 12%).Table 2 is shown The evaluation result of throwing condition and composite fibre and superfine fibre.

Table 2

[embodiment 8~10]

In order to change sea component peak width H, implemented using the composite spinning jete for being assembled with discharge plate, the discharge plate By the marine origin subregion formation of discharge plate used in embodiment 6 illustrated in Figure 28 with the hole count of tap group Figure 28 net 3 times (embodiments 8), 10 times (embodiments 9), 40 times (embodiments 10) are changed in the domain of shadow zone.In addition, in order to adjust between island component Distance, island polymer ratio is changed as shown in table 3, in addition, all obtained in a manner of similarly to Example 6 compound Fiber.

In the composite fibre of embodiment 8~10, the marine origin subregion as illustrated in Figure 14 figures is respectively formed at 4, but By changing the hole count of marine origin subregion formation tap group, sea component peak width H increases than embodiment 6.

As for the mechanical characteristic of composite fibre, intensity, more than 29% elongation with more than 3.2cN/dtex it is equal Excellent characteristic.In addition, silk producing procedures are from needless to say, for evaluating during the knitted fabric of extra large polymer stripping property etc. processes, no Fracture of wire or fluffing, the excellent quality of cloth and silk can occur.

Compared with Example 6, as marine origin subregion increases, the tendency that extra large polymer stripping property improves is seen, especially In embodiment 9 and embodiment 10, there is very excellent performance, similarly to Example 5, in the institute of 5 minutes processing times In the sample of acquisition, the superfine fibre of many has been produced.

Therefore, in the composite fibre of embodiment 8~10, can shorten the time untill the complete dissolution of extra large polymer.Cause This, superfine fibre comes off that few (come off evaluation：It is excellent), the mechanical characteristic of superfine fibre is also excellent.Table 3 shows result.

[embodiment 11,12]

Instead of discharge plate used in embodiment 5, formation tap group in marine origin subregion at 8 is provided with using being assembled with The composite spinning jete of plate is discharged, the marine origin subregion formation tap group towards inside but is not present in center by outer layer. Moreover, island polymer ratio is set into 70%, all composite fibre is obtained (in fact in a manner of similarly to Example 5 in addition Apply example 11).

In addition, the spinning condition implemented by the embodiment 11, the spinning speed of 3000m/ minutes is changed to, by stretching ratio 1.7 times are set to, implements embodiment 12.

In embodiment 11 and embodiment 12, as illustrated in Figure 20 formed with marine origin subregion at 8.With embodiment 5 Section compare, although the subregional size of marine origin is equal (L/D：0.25, H/D：0.03), but can confirm formed with sea component Region is by 4 compound cross-sections increased at 8.In embodiment 11 and embodiment 12, the equal no problem in silk producing procedures, especially It is in embodiment 12, although spinning speed was improved to 2 times of 3000m/ minutes, not obvious fracture of wire etc..

For the sample of embodiment 11 and embodiment 12, extra large polymer stripping property also because marine origin it is subregional existing for increase And good (extra large polymer stripping property：It is good), the mechanical characteristic of superfine fibre has excellent spy as caused by the composite fibre Property.Table 3 shows result.

[embodiment 13,14]

Instead of the spinning head used in embodiment 1, plate composite spinning jete is discharged as follows using being assembled with：With square crossing Mode crosses the mode of the tap aggregate continuously marine origin subregion formation tap group shown in configuration diagram 5 respectively.Remove Composite fibre (embodiment 13) is obtained in a manner of similarly to Example 11 beyond this.In addition, the spinning implemented by the embodiment 13 Strand part, spinning speed is changed to 3000m/ minutes, stretching ratio is set to 1.7 times, implements embodiment 14.

In embodiment 13 and embodiment 14, the marine origin subregion shown in Figure 13 is respectively formed, the marine origin subregion is with horizontal stroke The form worn the section of composite fibre and vertically intersected at the center of composite fibre forms (L/D：1.00).In embodiment 13 and In embodiment 14, compared with embodiment 11, although sea component peak width is equal (H/D：0.03), but As/Ac is 0.153, In composite fibre section, the subregional area ratio increase of marine origin, compared with embodiment 11, the extra large polymer stripping property enters one Step improves (extra large polymer stripping property：It is excellent).

For the composite fibre of the embodiment 13 and embodiment 14, similarly to Example 5 with sodium hydrate aqueous solution In the sample of processing 5 minutes, the appearance that composite fibre is divided into multiply can be observed.In these composite fibres, crossing Ground is configured in the marine origin subregion in its section and forms crackle.Therefore, composite fibre is handled de- in the dissolution of extra large polymer It is divided into multiply in extra large initial stage.By the effect, in the composite fibre of embodiment 13 and embodiment 14, although island is gathered Compound ratio more a height of 70%, but the processing time untill taking off sea completely can also be shortened.Therefore, it is virtually impossible to it was observed that superfine Fiber comes off that (come off evaluation：It is excellent).Table 3 shows result.

[embodiment 15]

Instead of the discharge plate used in embodiment 13, prepare shown in Figure 32, addition to cross tap aggregate 18 Marine origin subregion formation tap group that mode is continuously set and the discharge plate of equivalent arrangements.Except use is assembled with Figure 32 institutes Beyond the composite spinning jete of the discharge plate of illustration, composite fiber spinning is all carried out in a manner of similarly to Example 13.In reality Apply in example 15, as shown in figure 21,4 (H/D of every 45 ° of configurations in the form of the section that composite fibre is crossed in marine origin subregion： 0.03L/D：1.00).

For embodiment 15, due to the form in the section as marine origin subregion perforating fiber, further split island area Domain, so composite fibre easily is divided into multiply in the stage for taking off extra large initial stage, because outward appearance is exposed to sodium hydrate aqueous solution In surface area increase, so as to compared with embodiment 13, extra large excellent (the extra large polymer stripping property of polymer stripping property：It is excellent).It is tied Fruit, compared with comparative example, the time required for completely de- sea can be shortened, coming off for superfine fibre is also almost can not see and (come off and comment Valency：It is excellent).Table 3 shows result.

Table 3

[embodiment 17,18]

As shown in figure 33, island tap 13 and extra large tap 12 are set to 4 side shape grid, prepare to form marine origin subregion The discharge plate that the scope from the center of tap aggregate 18 towards outer layer to 0.5R is arranged on tap group (is filled close in hole Spend 1.5/mm²).Using the composite spinning jete for being assembled with the discharge plate, IV0.50dl/g copolymerization is used as extra large polymer The PET of 8.0 moles of % 5- sulfoisophthalic acid sodium (copolymerization PET2, melt viscosity：120Pas), in addition, entirely Portion obtains composite fibre (embodiment 17) in a manner of similarly to Example 6.

In addition, it is set to 0.3/mm using by the hole packed density of the spinning head used in the embodiment 17²Discharge Plate 2, in addition, all implement embodiment 18 in a manner of similarly to Example 11.In embodiment 17 and embodiment 18, As shown in figure 22, the form that marine origin subregion broadens from the center of composite fibre from all directions is formed as.In addition, though L/D is 0.50, but by changing hole packed density, as described in table 4, turn into the composite fibre of H/D and As/Ac changes.Embodiment 17 And the composite fibre of embodiment 18 similarly to Example 5 the dissolution of 5 minutes processing in, the shape in the section of composite fibre Into crackle, although marine origin subregion does not reach the outermost layer of composite fibre, the initial stage that is handled from the dissolution of extra large polymer, Sodium hydrate aqueous solution can invade the inside of composite fibre.Therefore, in terms of extra large polymer stripping property, embodiment 18 is due to can Broadly to form marine origin subregion, so with excellent extra large polymer stripping property (extra large polymer stripping property：It is excellent), in embodiment In 17, also due to the effect that above-mentioned crackle is formed, so as to good extra large polymer stripping property (extra large polymer stripping property： It is good).Table 4 shows result.

[embodiment 19]

Use forms dissolution with sea discharge group in a manner of shown in Figure 34 and hole packed density is set into 0.3/mm²Row Ejecting plate, so that marine origin subregion is formed at the center of composite fibre with trapezoidal.The dissolution is with sea discharge group from tap collection The center of zoarium 18 is placed continuously to R0.4 scope, and marine origin subregion is matched somebody with somebody in composite fibre in the form of symmetrical Put.In addition to using the composite spinning jete for the discharge plate being assembled with illustrated in Figure 34, all with side similarly to Example 17 Formula obtains composite fibre.

The composite fibre of embodiment 19, in its section, the configuration of the marine origin subregion formation tap group depended on, As shown in figure 23, the continuous trapezoidal marine origin subregion on circumferencial direction (120 °) is formed.In embodiment 19, with implementation Similarly, marine origin subregion does not reach the outermost layer of composite fibre to example 18, but the short time by observation similarly to Example 5 is molten Go out the sample of processing (5 minutes), it is known that in de- extra large initial stage, crackle is formed in the section of composite fibre.Therefore, sample Extra large polymer stripping property is good (extra large polymer stripping property：It is good), the de- extra large time can be shortened, therefore can also suppress to take off sea completely When superfine fibre come off that (come off evaluation：It is good).Table 4 shows result.

[embodiment 20,21]

According to the result of embodiment 19, to be formed to expand in the marine origin subregion at the center of composite fibre, use assembling There is the scope that the setting dissolution of the discharge plate illustrated in Figure 34 is discharged to group with sea to be continuously set to from tap aggregate 18 In addition center, all obtains to the composite spinning jete of the discharge plate of R0.5 scope in a manner of similarly to Example 19 Composite fibre.In addition, the spinning condition implemented by the embodiment 20, is changed to 3000m/ minutes by spinning speed, will stretch Multiplying power is set to 1.5 times, so as to implement embodiment 21.

In the composite fibre of embodiment 20 and embodiment 21, the shadow of scope is set by expansion dissolution with sea discharge group Ring, as illustrated in Figure 24, in the inside of composite fibre, compared with embodiment 19, expand ground and form sea component region.In embodiment In 20, expand due to being formed in the marine origin subregion of the inside of composite fibre, so compared with embodiment 19, in de- extra large shape at initial stage Intrusion into crackle and sodium hydrate aqueous solution becomes easy, thus, extra large excellent (the extra large polymer stripping property of polymer stripping property： It is excellent), due to the processing time required for completely de- sea can be shortened, come off that (come off evaluation to superfine fibre so as to unconfirmed： It is excellent).

Therefore, it is excellent to take off the mechanical characteristic of the superfine fibre behind sea, does not also have fibrillation etc. in the superfine fibre beam, Good quality.In embodiment 21 it has been confirmed that although increase spinning speed, but do not have in spinning process and stretching process There is fracture of wire, except with good throwing, and the rank at initial stage handled similarly to Example 19 in the dissolution of extra large polymer Section, forms crackle, extra large polymer stripping property has good characteristic (extra large polymer stripping property in composite fibre：It is good).

[embodiment 22]

As illustrated in Figure 35, in the section of composite fibre, marine origin subregion is formed as at equal intervals using being assembled with The mode of square crossing configure dissolution sea discharge group discharge plate composite spinning jete, in addition, all with embodiment 11 same modes obtain composite fibre.

In the section of the composite fibre of embodiment 22, as illustrated in Figure 26, marine origin subregion by island region to be clipped Form be equally spaced formed.

In embodiment 22, it is known that in the sample of short time processing similarly to Example 5, formed in compound cross-section Multiple crackles, island region are divided into multiple and existed.Handled due to above-mentioned composite fibre in the dissolution of extra large polymer Initial stage is divided into the effect of multiply, increases so as to the specific surface area of the extra large polymer in sodium hydrate aqueous solution Greatly, very excellent (the extra large polymer stripping property of extra large polymer stripping property：It is excellent).By such effect, it can significantly shorten extra large polymerization The processing time of the complete dissolution of thing, almost without it is de- extra large when superfine fibre come off that (come off evaluation：It is excellent), without superfine fibre Fluffing etc., there is excellent mechanical characteristic.Table 4 shows result.

[embodiment 23]

Except dissolution being discharged into mode that group is set to illustrate in Figure 36 with sea, being set to hole packed density using being assembled with 0.3/mm²Discharge plate composite spinning jete so that marine origin subregion is formed at the center of composite fibre with triangle, In addition, composite fibre is obtained in a manner of similarly to Example 19.

The composite fibre of embodiment 23, in its section, the configuration dependent on the formation of marine origin subregion with tap group, such as The marine origin subregion of triangle is formed shown in Figure 25.In embodiment 23, similarly to Example 19, marine origin subregion does not reach The outermost layer of composite fibre, but the short time dissolution by observing similarly to Example 5 handles the sample (between 5 points), it is known that Extra large initial stage is taken off, crackle is formed in the section of composite fibre.Therefore, good (the extra large polymer of the extra large polymer stripping property of sample Stripping property：It is excellent), the de- extra large time can be shortened, superfine fibre during so as to suppress to take off sea completely comes off that (come off evaluation： It is excellent).Table 4 shows result.

Table 4

Description of reference numerals

1 distributor

2 discharge plates

3 contracting flowing plates

4 discharge entrance holes

5 contracting discharge orifices

6 spinning head taps

7 composite spinning jetes

8 filament spinning components

9 cooling devices

10 spinning blocks

11 discharge plates

12 extra large taps

13 island taps

15 composition polymer taps

16 metering plates

17 distribution plates

18 tap aggregates

20 pipelines

21 extra large polymer import stream

22 island polymer import stream

23 extra large polymer distribution rooms

30 common outer tangent lines

41 sea components

42 islands region

43 island components

44 marine origin subregions

51 distributing troughs

52 dispensing orifices

61 extra large polymer import stream

62 pipelines

63 extra large polymer distribution rooms

64 distributors

65 extra large taps

66 composition polymer taps

67 discharge plates

Claims

1. a kind of composite fibre, having sea component and island component, when observing the section of composite fibre, the composite fibre is cut There is region below in face：

Be configured with sea component multiple island components island region and

The cross marine origin subregion of 1 or more than 2 for only being formed by sea component and being clipped by island region,

In the island region, the island component is regularly configured in the sea component, and regularly configuration refers to close 4 island components in, at the straight line at center of the straight line with being connected other 2 island components for connecting the center of adjacent 2 island components In parallel relation,

The subregional width of marine origin (H), more than being present in the island region and between adjacent island component The diameter (D) of the maximum of distance (W), the subregional width of marine origin (H) and composite fibre meets following formula：

0.001 ＜ H/D ＜ 0.2,

The sectional area (Ac) and the subregional area of marine origin of composite fibre add up to (As) to meet following formula：

0.05≤As/Ac≤0.35。

2. composite fibre according to claim 1, inside is led in the marine origin subregion from the top layer of the composite fibre Direction.

3. composite fibre according to claim 2, when observing the section of the island-in-sea type composite fiber, marine origin is subregional Length (L) is more than 0.25 with the ratio between the diameter (D) of composite fibre (L/D).

4. composite fibre according to claim 3, when observing the section of the island-in-sea type composite fiber, marine origin is subregional Width (H) is more than the maximum gauge (d) of island component.

5. composite fibre according to claim 4, when observing section, at least one following marine origin subregion be present：Sea The width (H) of composition range is more than the maximum gauge (d) of island component, and the subregional length of the marine origin (L1) is more than or equal to institute The subregional width of marine origin (H) is stated, the subregional length of marine origin (L1) is more than the 1/4 of the diameter (D) of composite fibre.

6. a kind of manufacture method of superfine fibre, have in the composite fibre described in any one from Claims 1 to 5 that sea is poly- The process of compound dissolution.

7. a kind of fibre, include the fiber described in any one of Claims 1 to 5.

8. a kind of fibre, include the superfine fibre obtained by the manufacture method described in claim 6.