CN1065928C - Method for mfg. multiple hellow shaped spinning plate - Google Patents
Method for mfg. multiple hellow shaped spinning plate Download PDFInfo
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- CN1065928C CN1065928C CN96116638A CN96116638A CN1065928C CN 1065928 C CN1065928 C CN 1065928C CN 96116638 A CN96116638 A CN 96116638A CN 96116638 A CN96116638 A CN 96116638A CN 1065928 C CN1065928 C CN 1065928C
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Abstract
The present invention relates to a method for manufacturing a multiple-hollow profiled spinneret plate, which belongs to a fiber manufacture class. The multiple-hollow profiled spinneret plate is composed of an arc-shaped slit with 9 holes or more than 9 holes or three groups or more than three groups (each group has two annular slits which respectively have two gaps, and the two annular slits are mutually arrayed in an overlapping mode) of slits which are in a crossed double-ring shape. The arc-shaped slits or the slits in a crossed double-ring shape are symmetrically distributed around a center to form the multiple-hollow profiled spinneret plate (disclosed in drawing 1). Melting polymers (such as PET, PP, PA, etc.) are extruded through the big hole and small guide hole of the spinneret plate and the slits, the melting bodies are expanded, and a multiple-hollow profiled fiber (disclosed in drawing 2) with 9 holes or more than 9 holes is formed by ring closure and cooling. The spinneret plate is adopted to spin multiple-hollow long filaments in various hole shapes or three-dimensional curly short fibers.
Description
The invention relates to many hollow profiles spinnerets.Be applicable to that multiple condensate (PET, PP, PA etc.) melt-spun prepares 9 holes, 9 holes above many hollow profiles long filament or staple fibre, it is fluffy that the porous fibre that makes thus has, softness, advantage such as resilience is good.
It is the I-shaped that adopts two intersections (spinneretss of Fig. 1-a) that JP79-112242 prepares four doughnuts, melt is earlier expanded after above-mentioned slit is extruded, shrink afterwards and cause intersecting the mutual adhesion of opening part melt of I-shaped slit and form hollow, thereby make four doughnuts (Fig. 1-b).Because the I-shaped slit that intersects constitutes foursquare spatial domain and intersects the effect of I-shaped slit melt cooling stress, causes forming hollow trend rectangle, and four holes are connected with each other, and cause the bulkiness and the elastic deficiency of this doughnut thus.
For improving above-mentioned defective, JP94-67122 improves the hole shape of spinnerets, has adopted a leading hole to connect several guide holes, and inferior guide hole is connected with slit again, and melt flows into the spinneret orifice slit through leading hole, inferior guide hole, and (Fig. 2-a) also extrudes.Melt is extruded back expanded after-contraction earlier from the slit mouth, causes the two ends of slit inter-adhesive, and closed loop forms hollow, melt is under the side-blown wind action, because it is different that ventilating surface and lee face cool off degree, makes it to produce the heterogeneous opposite sex, finally become many doughnuts (Fig. 2-b) of three-dimensional crimp.The four company holes that this spinnerets shape has solved previous many doughnut existence are one and non-circularization of pore-forming problem, but the distributed quantity of this kind narrow annular channel is subjected to the restriction of locus, the doughnut of multiform shape is that very big difficulty is arranged to preparing more, simultaneously its complicated slit not only difficulty but also valency height on its electrode is made.
The present invention is for design, makes the novel form of slits that 9 holes, many hollow profiles spinnerets more than 9 holes adopts and arrange.Can prepare many hollow profiled fibres (can be circular, also can be trilobal, five-pointed star shape, hexagon etc.) of different hole counts, different hole shapes according to the different purposes of fiber thus.
The key that the present invention solves has been to adopt unique shape of slit, has solved the melt closed loop, makes many hollow profiled fibres, makes the shape of slit simplify the accuracy of manufacture that has reduced manufacturing cost and improved slit greatly again.
According to the needs of fiber, to preparing 9 holes, admissible two class citation forms of many hollow profiled fibres more than 9 holes to hollow:
(1) during fiber hollow hole count 9 holes, adopted arcuate slots, this arcuate slots is symmetrically distributed around a center.Can be distributed on the circumference, also can be distributed on several circumference (Fig. 3-a).
When above-mentioned arcuate slots was distributed on the circumference, the opening of arcuate slots was arranged along the clockwise or counterclockwise direction of circumference, and promptly the opening of arcuate slots is mutually adjacent with adjacent arc bow face, considers the closed loop of sticking body, and its spacing should be less than 0.25mm; The shape of arcuate slots can design the different arcuate slots and the distribution of slit respectively according to the requirement of fiber to the state size of abnormity and hole shape, and its shape of slit can be circle, ellipse or arbitrary curve.Consider that hole shape is good with the mechanical property of circle and easily manufactured, the reason such as cost is low of machined electrode, so arcuate slots should adopt circle.The width of arcuate slots can be selected according to the height of fiber Denier.Be the hole shape that guarantees hollow and melt closed loop successfully, dead break in the unlikely generation, slit width should be between 0.04mm-0.20mm; To preparing low dawn doughnut, slit width is more suitable between 0.06-0.10mm.Above-mentioned every group
Slit links to each other with little guide hole, and several little guide holes link to each other with leading hole again, form many hollow profiles spinnerets.The condensate of fusion is extruded through big guide hole, little guide hole and slit, melt is in the expanded after-contraction in the two ends of slit, make it to finish closed loop, forming 9 holes, many hollow profiled fibres (Fig. 3-b) more than 9 holes under the cooling of lateral blowing with the melt adhesion of adjacent arcuate slots bow face.
The shape of above-mentioned arcuate slots and arrange and to solve the difficulty that slit arrangement faced in the past, and the too small spinnerets mechanical strength that causes of middle dead break or the gap between the narrow annular channel that is prone to when having overcome many hollow closed loop, moulding descends; Excessively cause middle dead break.Owing to the arcuate slots simple shape, arrange regularly, simplified the manufacturing technique of spinnerets thus greatly and reduced production cost.
(2) fiber hollow hole count needs more for a long time, and spinnerets can adopt three groups, more than three groups, and every group is two narrow annular channels with two gaps, the narrow annular channel that overlaps each other and arrange, and above-mentioned three groups, three groups are above
Many hollow profiles spinnerets that the shape slit constitutes around center symmetrical distribution (Fig. 4-a).
One of this plate features is that the abnormity of fiber is decided by
The group number of shape slit, three groups of slits make Y shape 9 hole fibers, four groups
Slit makes four stars shape 12 hole fibers; Five groups
Slit makes five-pointed star shape 16 hole fibers; Six groups
Slit makes six stars, 19 hole fibers.
For reaching the good ring closure of melt,
Four gaps of shape slit are in always on the line, and this straight line is
Shape slit slit is around the ray at center, and its reason is can make cold air promptly reach the center to play good cooling effect, forms many doughnuts (Fig. 4-b).The size in gap directly influences pore-forming and closed loop again, thus should hang down many doughnuts of dawn in preparation less than 0.3mm, more suitable less than 0.25mm; According to the different requirements of fiber to hollow form and degree of hollowness, select different narrow annular channels, they can be circle, ellipse or arbitrary curve.Consider that four gap cooling velocities are different and cause and the difference of contraction cause the variation of pore-forming, for circular or near the requirement of circle table doughnut, its slit annular should adopt oval: for the hole shape maintenance that makes the mesopore after the shaping even,
The lap area of two narrow annular channels of shape slit is equal to or slightly greater than non-overlapped part area.In order to make several groups
The smooth closed loop of centre bore that slit centers on, the minimum range between group should strictly be controlled, should be less than 0.06mm.The width of narrow annular channel is decided on the dawn number of many doughnuts, generally is controlled between the 0.04mm-0.20mm, and the width of more desirable slit is 0.06mm-0.10mm.
The present invention has adopted unique form of slits and slit arrangement, has solved to prepare the spinnerets processing difficulties that many doughnuts are faced more than 9 holes, 9 holes, and the hollow rate of fiber reaches 25-38%.The hollow forming of fiber is good, and fault remains on 40-60/100g, and the rebound degree of fiber can reach 88-92.5%.
Fig. 1 .4 hollow spray filament plate spinneret orifice and gained doughnut schematic cross-section (JP79-112243)
1-a 4 hollow spray silk hole shapes
1-b 4 doughnut schematic cross-sections
1-c 4 doughnut photos
Fig. 2 .5 hollow spray filament plate spinneret orifice shape and gained doughnut schematic cross-section (JP94-67122)
2-a 5 hollow spray silk hole shapes;
2-b 5 doughnut schematic cross-sections
Fig. 3 .9 hollow spray filament plate spinneret orifice shape and gained doughnut cross-section photograph ()
3-a 9 hollow spray silk hole shapes
3-b 9 doughnut cross-section photograph
Fig. 4. many hollow spray filament plate spinneret orifice shape and gained doughnut cross-section photograph ()
4-a1 16 hole spinneret orifice shapes
4-a2 gained 16 hole doughnut cross-section photograph
4-b1 19 hole spinneret orifice shapes
4-b2 gained 19 hole doughnut cross-section photograph
Example one
With viscosity is that (with phenol-tetrachloroethanes is solvent for 0.65 PET, under 25 ℃ of temperature, measure), adopt single screw rod (Φ=80mm, L/D=25) and nozzle aperture shown in Figure 3 (spinnerets diameter of phi 160mm, spinneret orifice is counted 90f, arcuate slots is circular, and a spray silk width is 0.18mm) under 275-285 ℃, carry out melt spinning; Under spinnerets 8cm to sentence 16 ℃ of wind speed be 0.6m/s around, make 7 dawn of monofilament, total denier is 650,000 dawn boundling silks.In the ring blowing of oil bath 65 ℃ and superheated vapor melt spinning cooled off thereafter; Rolling up with 600m/min speed is to carry out 4 times of stretchings under 120 ℃ of conditions, and relaxation processes is carried out in dry back under 110-120 ℃ steam, and (Fig. 3-b) is seen in the cross section for details to cut into the staple fibre of 51-65mm afterwards.It is empty good that the fiber of gained becomes, hollow rate 32.5%, and the rebound degree of fiber is 91.4%.Fault only is 30mg/100g, and the intensity of staple fibre is 4.1 cN/dtex.
Example two
(the spinnerets diameter is Φ 90mm, and the spinneret orifice number is 60f, is two narrow annular channels with two gaps by 4 groups and 5 groups every group respectively, arranges each other to adopt example one identical PET, single screw rod and 16 holes, 19 hole spinneretss shown in Figure 4
The shape slit, narrow annular channel is shaped as ellipse, and slit width is 0.16mm), make 16 holes, the 19 hole staple fibres (cross section is seen Fig. 4-b1,4-b2 for details) that length is 51mm with identical spinning, stretching, drying condition, it is empty good that the gained fiber becomes, and do not see out the sky situation.
16, the hollow rate in 19 holes is respectively 34.2%, 36.7%, and the fiber resilience is respectively 92.4%, 94.2%; Fault is respectively 45mg/100g, 64mg/100g, and intensity is respectively 3.9 cN/dtex, 3.89 cN/dtex.
Reference examples
(the spinnerets diameter is Φ 180mm to adopt 4 hole spinneretss shown in example one identical PET, single screw rod and Fig. 1-a, spinneret orifice is counted 210f, slit width is 0.18mm) with spinning, stretching and the drying process of same instance one, (cross section sees that Fig. 1-c), its hollow rate is 29.8% for details to make length and be the 4 hole staple fibres of 51mm; Fiber rebound degree 84%, fault are 41.2mg/100g, and staple fibre intensity is 4.2 cN/dtex.
Claims (9)
1. one by being provided with the gap between several slits, discontinuous arrangement forms many hollow spray filament plate of closed annular, it is characterized in that: (1) by 9, arcuate slots more than 9 is symmetrically distributed around the spinnerets center and single many hollows abnormal shape spinneret orifices of forming are formed; (2) by three groups, more than three groups (every group is two arcuate slots with two gaps, overlap each other arrange form)
Arcuate slots is symmetrically distributed and the special-shaped spinneret orifice shapes of single many hollows of composition around the spinneret orifice center.Be distributed in symmetrically and evenly on circle or the rectangle spinning plate surface by above-mentioned two kinds of hole shapes, constitute the special-shaped spinnerets of many hollows thus.
By claim 1 described one by being provided with the gap between several slits, discontinuous arrangement forms many hollow spray filament plate of closed annular, it is characterized in that: by 9, arcuate slots more than 9 is symmetrically distributed around the spinnerets center and single many hollows abnormal shape spinneret orifices of forming, its arcuate slots shape is circle, ellipse or arbitrary curve, and more desirable shape is circular.
By claim 1 or 2 described one by being provided with the gap between several slits, discontinuous arrangement forms many hollow spray filament plate of closed annular, it is characterized in that: by 9, arcuate slots more than 9 is symmetrically distributed around the spinnerets center and single many hollows abnormal shape spinneret orifices of forming, its arc notch is mutually adjacent with adjacent arc bow face, and its spacing should be less than 0.25mm.
By claim 1 or 2 described one by being provided with the gap between several slits, discontinuous arrangement forms many hollow spray filament plate of closed annular, it is characterized in that: by 9, arcuate slots more than 9 is symmetrically distributed around the spinnerets center and single many hollows abnormal shape spinneret orifices of forming, its arcuate slots width is 0.04-0.2mm, more desirable slit width 0.06-0.10mm.
By claim 1 described one by being provided with the gap between several slits, discontinuous arrangement forms many hollow spray filament plate of closed annular, it is characterized in that: by three groups, more than three groups every group be two arcuate slots with two gaps, overlapping each other to arrange forms
Arcuate slots is symmetrically distributed and the special-shaped spinneret orifices of single many hollows of composition around the spinneret orifice center, and its narrow annular channel shape is circle, ellipse or arbitrary curve, and more desirable shape is oval.
By claim 1 or 5 described one by being provided with the gap between several slits, discontinuous arrangement forms many hollow spray filament plate of closed annular, it is characterized in that: by three groups, more than three groups every group be two arcuate slots with two gaps, overlapping each other to arrange forms
Arcuate slots is symmetrically distributed and the special-shaped spinneret orifices of single many hollows of composition around the spinneret orifice center, and its two narrow annular channel lap areas are equal to or greater than non-overlapped part area.
By claim 1 or 5 described one by being provided with the gap between several slits, discontinuous arrangement forms many hollow spray filament plate of closed annular, it is characterized in that: by three groups, more than three groups every group be two arcuate slots with two gaps, overlapping each other to arrange forms
Arcuate slots is symmetrically distributed and the special-shaped spinneret orifices of single many hollows of composition around the spinneret orifice center, and its every group is two annulars with two gaps
Existing 9 gaps of slit are that being distributed in the spinneret orifice center is on the ray in the center of circle, and the gap of narrow annular channel is less than 0.3mm, and more desirable gap is less than 0.25mm.
By claim 1 or 5 described one by being provided with the gap between several slits, discontinuous arrangement forms many hollow spray filament plate of closed annular, it is characterized in that: by three groups, more than three groups every group be two arcuate slots with two gaps, overlapping each other to arrange forms
Arcuate slots is symmetrically distributed and the special-shaped spinneret orifices of single many hollows of composition around the spinneret orifice center, and the minimum range between its group is less than 0.06mm.
By claim 1 or 5 described one by being provided with the gap between several slits, discontinuous arrangement forms many hollow spray filament plate of closed annular, it is characterized in that: by three groups, more than three groups every group be two arcuate slots with two gaps, overlapping each other to arrange forms
Arcuate slots is symmetrically distributed and the special-shaped spinneret orifices of single many hollows of composition around the spinneret orifice center, and its arcuate slots width is 0.04-0.2mm, and more desirable slit width is 0.06-0.10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96116638A CN1065928C (en) | 1996-12-26 | 1996-12-26 | Method for mfg. multiple hellow shaped spinning plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96116638A CN1065928C (en) | 1996-12-26 | 1996-12-26 | Method for mfg. multiple hellow shaped spinning plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1177022A CN1177022A (en) | 1998-03-25 |
| CN1065928C true CN1065928C (en) | 2001-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96116638A Expired - Fee Related CN1065928C (en) | 1996-12-26 | 1996-12-26 | Method for mfg. multiple hellow shaped spinning plate |
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| CN (1) | CN1065928C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079120C (en) * | 1999-06-08 | 2002-02-13 | 张锡明 | Blending polyester profiled tangling yarn and its production method |
| FR2925072B1 (en) * | 2007-12-14 | 2010-09-10 | Promiles | METHOD FOR MANUFACTURING A FILAMENT, EXTRUSION LINE FOR CARRYING OUT SAID MANUFACTURING METHOD AND FILAMENT OBTAINED |
| CN103820871A (en) * | 2014-03-11 | 2014-05-28 | 太仓明静纺织有限公司 | Hollow-fiber manufacturing template |
| CN104975359A (en) * | 2015-06-24 | 2015-10-14 | 吴倩颖 | Spinneret plate holes for producing sixteen-hole hollow fiber |
| CN105908270B (en) * | 2016-06-21 | 2018-09-18 | 浙江华欣新材料股份有限公司 | Spinneret for producing doughnut |
| TWI650451B (en) * | 2016-07-27 | 2019-02-11 | 新光合成纖維股份有限公司 | A down-like fiber, a spinneret and a method for manufacturing the fiber |
| CN108728937B (en) * | 2018-06-29 | 2020-02-21 | 华中科技大学 | Hollow graphene fiber and preparation method and application thereof |
| CN109647203B (en) * | 2018-12-26 | 2021-10-26 | 天津膜天膜科技股份有限公司 | Improved spinneret plate for parallel channel nanofiltration membrane and preparation method |
| CN111996609A (en) * | 2020-08-13 | 2020-11-27 | 新凤鸣集团股份有限公司 | Double-layer hollow thermal polyester fiber and preparation method thereof |
| CN112647141B (en) * | 2020-11-23 | 2022-07-08 | 浙江桐昆新材料研究院有限公司 | Multi-C-shaped high-hollowness bright fiber and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1018189B (en) * | 1988-07-29 | 1992-09-09 | 纳幕尔杜邦公司 | Seven hole spinneret |
-
1996
- 1996-12-26 CN CN96116638A patent/CN1065928C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1018189B (en) * | 1988-07-29 | 1992-09-09 | 纳幕尔杜邦公司 | Seven hole spinneret |
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| Publication number | Publication date |
|---|---|
| CN1177022A (en) | 1998-03-25 |
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