CN103290489B - A kind of flat film head producing PET flat filament - Google Patents
A kind of flat film head producing PET flat filament Download PDFInfo
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- CN103290489B CN103290489B CN201310262161.3A CN201310262161A CN103290489B CN 103290489 B CN103290489 B CN 103290489B CN 201310262161 A CN201310262161 A CN 201310262161A CN 103290489 B CN103290489 B CN 103290489B
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Abstract
The invention discloses a kind of flat film head producing PET flat filament, be one of the core apparatus of Flat Yarn Production line, belong to processing of high molecular material mechanical field.This flat-die head comprises spinneret orifice, runner, it is characterized in that: be provided with choker bar in runner; Spinneret orifice is engaged by upper and lower die lip and forms, and upper and lower die lip body is respectively equipped with adjustable bolt.PET melt flow is regulated by adjusting bolt and choker bar, directly extruding cross section through engagement property spinneret orifice is that the PET of rectangle comes into being flat filament, by the lower die lip of adjusting bolt extruding, the elasticity of lower die lip is relied on to adjust the gap length of rectangular micropore, reach the object of control PET flat filament thickness, form flat filament through cooling, drafting forming technique.Effectively can solve the problem of easy fracture of wire in drawing-off, braiding process, mould structure design is reasonable, can meet suitability for industrialized production.
Description
Technical field
The present invention relates to a kind of flat film head producing woven bag PET flat filament, belong to processing of high molecular material mechanical field.
Background technology
The very large purposes of polypropylene (PP) produces woven bag, due to polypropylene woven bag be easily separated with packing material, quality is light, cost is low, has been widely used in the packaging that product combined greatly by chemical industry, mineral products powder, building materials and grain etc.But, due to poor, the oxidizable degraded of PP weatherability, significantly reduce depositing the mechanical strength of woven bag in process, impact packaging effect.
The mechanical property of polyethylene terephthalate (PET) and weatherability are all better, and China has become PET and produced, consumes the first big country.But under field conditions (factors), PET not easily degrades, and waste PET causes environmental pollution, countries in the world all take much count of recovery and the recycle of PET.
At present, more domestic production PP flat filament equipment manufacturers and woven bag manufacturer all utilize waste PET production high-performance, ageing-resistant PET flat filament and woven bag in trial, but most producer just does some and improves on original PP Flat Yarn Production line basis, still continue to use extrude → cool → cut → technological process of drawing-off → sizing, when longitudinally cutting, there is little crazing in the edge of cutting of flat filament, in drawing and heat-setting process, easily develops into stress concentration point.Simultaneously there is larger difference in PET and PP molecular structure, to such an extent as on PP Flat Yarn Production line, produce PET flat filament fracture of wire situation seriously, cannot normal continuous seepage.
Chinese patent CN2263113Y discloses a kind of a kind of Ribbon-like filament spinneret plate producing Polyster ribbon-like filament, and described spinneret orifice is made up of the guide hole of circle and micropore two part of rectangle, its rectangular opening mould length and width than little, closer to general fibre.Chinese patent CN201857452U discloses the spinnerets of the micro-pore of equidistant arrangement around a kind of spinneret orifice, and the fiber of production has fire-retardant soundproof effect, is applied to procedure of fibre production.Chinese patent CN201520819U discloses one and utilizes Pillar recovery bottle sheet to spin linoleum cloth polyster fibre special spinning jet, and its spinneret orifice comprises guide hole, tapering transition hole and capillary micropore and forms, for the production of polyester staple fiber.Chinese patent CN202730337U discloses a kind of spinnerets with the special-shaped spinneret orifice of ellipse, and the fabric hand of production is smooth, easily adheres to anion, the oxidation resistant gain chemical composition of fire-resistance.
In sum, at present about the patent of PET spinnerets mainly for the production of polyster fibre.Waste PET production flat filament is utilized still to be faced with melt viscosity low, the problem that drawing-off is easily broken.In order to avoid in rear point cutting process, cutting knife is to the damage of flat filament side, and need improve mould structure, effectively solving the problem of easy fracture of wire in drawing-off, braiding process, is the problem that urgently will solve in current suitability for industrialized production.
Summary of the invention
For solving the deficiency that prior art exists, the object of this invention is to provide a kind of flat film head taking waste PET as raw material and produce PET flat filament, solving the problem that PET flat filament is easily broken when drawing-off.
To achieve these goals, the present invention devises and produces the flat film head of PET flat filament, is the core apparatus producing PET Polyster ribbon-like filament production line.This flat film head comprises spinneret orifice, runner, it is characterized in that: be provided with choker bar in runner; Spinneret orifice is engaged by upper and lower die lip and forms, and upper and lower die lip body is respectively equipped with adjustable bolt.
Technique scheme basis is selected spinneret orifice homogenous linear be arranged on flat film head plate body.
Choker bar convex-concave continuous arrangement in the upper runner of technique scheme basis.
The invention has the advantages that: 1, spinneret orifice is made up of zigzag die lip and adjusting bolt, extrudes die lip by adjusting bolt, rely on the natural resiliency of die lip to regulate spinneret orifice gap length, thus can control PET flat filament thickness and width well.Need according to user nascent flat filament PET melt being directly extruded into different-thickness, cut can produce PET flat filament without the need to carrying out longitudinal direction, meanwhile, effectively prevent the damage of cutting knife to flat filament side, reduce the probability that stress concentration point produces in drafting process.2, the choker bar in runner can regulate melt flow, in conjunction with adjustable zigzag mouth mould, PET melt is directly extruded into nascent flat filament, effectively can solve the problem of easy fracture of wire in drawing-off, braiding process, mould structure design is reasonable, can meet suitability for industrialized production.
Accompanying drawing explanation
fig. 1for the structural representation of flat-die head of the present invention; In figure: 1-locating hole, 2-runner hole, 3-bolt, 4-spinneret orifice;
fig. 2for flat film head A-A profile; In figure: die lip, 10-adjusting bolt B, 11-set bolt, 12-lower mold body under 5-upper die body, 6-adjusting bolt A, 7-choker bar, the upper die lip of 8-, 9-;
fig. 3for the enlarged diagram of flat filament runner; In figure: 4 is spinneret orifice.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, the present invention is elaborated.
The present invention produces the flat film head of PET flat filament and is made up of metal material, and comprise spinneret orifice, runner (4), spinneret orifice is uniformly distributed below flat-die handpiece body, is fixed, linear arrangement by set bolt (11).Spinneret orifice (4) is engaged by upper die lip (8), lower die lip (9) and forms, and upper die lip (8) body is provided with adjustable bolt A(6), lower die lip (9) body is provided with adjustable bolt B(10).Choker bar (7) is provided with, convex-concave continuous arrangement in runner.
Waste PET be raw material when producing PET flat filament the PET melt of viscous state to enter in runner and by adjusting bolt A(6) and choker bar (7) adjustment melt flow, directly extruding cross section through engagement property spinneret orifice (4) is that the PET of rectangle comes into being flat filament, by adjusting bolt B(10) the lower die lip (9) of extruding, the elasticity of lower die lip is relied on to adjust the thickness of rectangular micropore, thus reach the object of control PET flat filament thickness, form flat filament through cooling, drafting forming technique.
Application examples 1:
1) by adjustable flat filament runner engaging width be 5mm upper and lower film lip be arranged on flat film head;
2) under melt pressure effect, the PET melt of viscous state enters in runner, and adjusting bolt A(6) and choker bar (7) regulate melt flow, directly extruding cross-sectional width through engagement property spinneret orifice is that the PET of 4.5 ~ 5.0mm comes into being flat filament;
3) adjusting bolt B(10) gap of extruding lower die lip (9) adjustment rectangular micropore to 0.5mm, make PET flat filament thickness of coming into being be 0.4 ~ 0.6mm;
4) enter in the water bath heating device of 85 ± 3 DEG C carry out heating draw orientation, draw ratio 3:1 through a point roll dies, drafting system PET flat filament, improve the degree of crystallinity of PET flat filament;
5) under drafting force effect, PET flat filament secondary enters in water bath heating device and carries out heating draw orientation, and bath temperature is 90 ± 3 DEG C, draw ratio 2:1;
6) under drafting force effect, PET flat filament is close to setting roller surface and is carried out heat-shaping, and setting roller temperature is 180 ~ 205 DEG C.Carry out rolling through cooling device, batching apparatus, can obtain width is 2 ~ 2.5mm, and thickness is the finished product flat filament of 15 ~ 20 μm.Its single wire fracture intensity reaches 55MPa, and extension at break is less than 30%.
Application examples 2
1) by adjustable flat filament runner engaging width be 8mm upper and lower film lip be arranged on flat film head;
2) under screw rod and melt pressure effect, the PET melt of viscous state enters in runner, according to production practical adjustments bolt A(6) and choker bar (7) regulate melt flow, through engagement property spinneret orifice flat filament of directly extruding that cross section is rectangle, the PET of width 7.5 ~ 8.5mm comes into being;
3) according to need of production adjusting bolt B(10) the rectangular micropore gap of extruding lower die lip (9) adjustment runner to 0.3mm, make PET flat filament thickness of coming into being be 0.3 ~ 0.4mm;
4) under a point roll dies, drafting system effect, PET flat filament enters in the water bath heating device of 85 ± 3 DEG C and carries out heating draw orientation, draw ratio 4:1, improves the degree of crystallinity of PET flat filament;
5) under drafting force effect, PET flat filament secondary enters in water bath heating device and carries out heating draw orientation, and bath temperature is 90 ± 3 DEG C, draw ratio 3:1;
6) under drafting force effect, PET flat filament is close to setting roller surface and is carried out heat-shaping, and setting roller temperature is 180 ~ 205 DEG C.Carry out rolling through cooling device, batching apparatus, can obtain width is 5 ~ 6mm, and thickness is the finished product flat filament of 10 ~ 15 μm.Its single wire fracture intensity reaches 65MPa, and extension at break is less than 25%.
Claims (1)
1. produce a flat film head for PET flat filament, comprise spinneret orifice, runner, it is characterized in that: in runner, be provided with choker bar; Spinneret orifice is engaged by upper and lower die lip and forms, and upper and lower die lip body is respectively equipped with adjustable bolt; Spinneret orifice homogenous linear is arranged on flat film head plate body; Choker bar convex-concave continuous arrangement in runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310262161.3A CN103290489B (en) | 2013-06-27 | 2013-06-27 | A kind of flat film head producing PET flat filament |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310262161.3A CN103290489B (en) | 2013-06-27 | 2013-06-27 | A kind of flat film head producing PET flat filament |
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| Publication Number | Publication Date |
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| CN103290489A CN103290489A (en) | 2013-09-11 |
| CN103290489B true CN103290489B (en) | 2015-12-16 |
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| CN201310262161.3A Active CN103290489B (en) | 2013-06-27 | 2013-06-27 | A kind of flat film head producing PET flat filament |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103710766B (en) * | 2013-12-12 | 2016-03-30 | 北京化工大学 | A kind of doughnut shower nozzle of adjustable hollow core tubes |
| CN103737950B (en) * | 2013-12-31 | 2017-05-10 | 海宁市金潮实业有限公司 | Manufacturing method of low-heat-shrinkage-rate polyolefin flat filament |
| CN106757448B (en) * | 2016-12-21 | 2020-01-03 | 北京化工大学 | Method and device for preparing micro-fluidic superfine fibers in polymer melt film |
| CN108501277A (en) * | 2017-10-11 | 2018-09-07 | 佛山市恒辉隆机械有限公司 | A kind of intelligent data adjust automatically die gap device |
| DE102019213384A1 (en) * | 2019-09-04 | 2021-03-04 | Guangdong Yizumi Precision Machinery Co., Ltd. | Machine tool for additive manufacturing with an extruder |
| DE102019213381A1 (en) * | 2019-09-04 | 2021-03-04 | Guangdong Yizumi Precision Machinery Co., Ltd. | Extruder of a machine tool for additive manufacturing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0805014B1 (en) * | 1996-05-03 | 2001-07-25 | OFFICINE FRATELLI CARRARO s.n.c., DI CARRARO GINO, ANGELO E C. | Device for adjusting the gap between the lips of an extrusion die |
| CN2567022Y (en) * | 2002-11-23 | 2003-08-20 | 汕头市奇佳机械厂有限公司 | Headpiece mould of sheet extruder |
| CN2749667Y (en) * | 2004-12-26 | 2006-01-04 | 汕头市达诚机械有限公司 | Mould head of sheet material machine |
| CN101972568A (en) * | 2010-09-14 | 2011-02-16 | 尤祥银 | Medical efficient bacterium blocking filter material and preparation method thereof |
| CN203346520U (en) * | 2013-06-27 | 2013-12-18 | 郑州大学 | Flat film handpiece for producing PET tape yarns |
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2013
- 2013-06-27 CN CN201310262161.3A patent/CN103290489B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0805014B1 (en) * | 1996-05-03 | 2001-07-25 | OFFICINE FRATELLI CARRARO s.n.c., DI CARRARO GINO, ANGELO E C. | Device for adjusting the gap between the lips of an extrusion die |
| CN2567022Y (en) * | 2002-11-23 | 2003-08-20 | 汕头市奇佳机械厂有限公司 | Headpiece mould of sheet extruder |
| CN2749667Y (en) * | 2004-12-26 | 2006-01-04 | 汕头市达诚机械有限公司 | Mould head of sheet material machine |
| CN101972568A (en) * | 2010-09-14 | 2011-02-16 | 尤祥银 | Medical efficient bacterium blocking filter material and preparation method thereof |
| CN203346520U (en) * | 2013-06-27 | 2013-12-18 | 郑州大学 | Flat film handpiece for producing PET tape yarns |
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| CN103290489A (en) | 2013-09-11 |
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