CN1333390A - Technology for producing low fusing point composite short fibre - Google Patents
Technology for producing low fusing point composite short fibre Download PDFInfo
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- CN1333390A CN1333390A CN 01103938 CN01103938A CN1333390A CN 1333390 A CN1333390 A CN 1333390A CN 01103938 CN01103938 CN 01103938 CN 01103938 A CN01103938 A CN 01103938A CN 1333390 A CN1333390 A CN 1333390A
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Abstract
In the production process of low melting point composite short fibre double component, i.e. polypropene and high-density polyethylene are used as basic raw material, and adopts the following steps: erspectively extruding in bunker, mixing and feeding their mixture into spinning component, winding-forming, collection, tensioning, drafting, oil bath, secondary drafting, superheating stretching, third drafting, crimping, drying, cutting and shredding so as to obtain the invented finished product. Said invention can be adapted for raw material requirements for dry paper-making process, and the adoption of said invention process can produce high-quality composite short fibre.
Description
Low fusing point composite short fibre, it is the innovation achievement on traditional synthetic fiber technology basis, it can adopt the high polymer of any heterogeneity, be compounded in the filament by special technology, can change the performance of traditional homofil, improve the fiber applications function, promote the scope of downstream product exploitation, be a kind of chemical fibre new material, relating to the D01F class is the compound short flannel preparation method technical field of base material with the bi-component.
For bi-component or multi-component long filament or short silk, each state all in research, goes through decades, existing considerable progress.World developed country the seventies just begins the bi-component composite spinning is studied, the eighties such as Denmark Dynaudio Krona company, Japanese Chisso Corporation (JP) 6-32, Nakanoshima 3-chome, Kitaku, Osaka, Japan adopt high density polyethylene (HDPE), linear low density polyethylene (LLDPE) and polypropylene composite bicomponent synthetic continuous fibre and PP/PE bi-component composite short fiber respectively, be applied to hygienic absorption nonwoven fabric and cotton for wadding binding material, domestic at the nineties initial stage, develop by the Shanghai Synthetic Fibre Inst that PA/PET is compound, compound production improved low-melting point composite fibres such as PA6/PA66, PP/PE.It is mainly used in caking property nonwoven fabric and flocculus field.
In the known technology, application number: 94112010.4 " manufacture methods of improved low-melting point composite fibre ", disclosed is the method for designing of low melting point high polymer, has given the high polymer better spinnability; Fiber fracture morphology to eccentric structure designs; With the proportioning that is cortex additive ethene, butadiene and styrene blend; With the spinning moulding condition; With adjustment of composite spinning equipment spinneret component etc.
Also has application number: 89103050.6 " long-fiber of thermal bonding two-component synthesis and produce the method for absorbent material with this fiber ".Disclosed is core segment to adopt polyolefin or the outer skin portion of polyester be polyolefin, and the fusing point of core segment is higher than outer skin portion, the outer skin portion adding surfactant at this fiber makes it to have permanent hydrophilic.
The present invention compares with above-mentioned prior art, the novelty of its technology and technology, creativeness, practicality are to utilize common low-cost raw material, and existing injection-moulding device is improved adjustment slightly, adopt technology for producing low fusing point composite short fibre, can make the compound short flannel of high-quality.
Purpose of the present invention, be the demand in the face of market, particularly the compound short flannel of " dry method of paper-making " urgent need is the demand of main raw material, and common moulding with PE and the compound production superfine fibre of PP bi-component equipment transformed adjustment, adopt technology for producing low fusing point composite short fibre, preparation 4～6mm short flannel.
Technical scheme of the present invention is following listed:
With bi-component is that polypropylene, two kinds of raw materials of high density polyethylene (HDPE) are base stock, through feed bin separately, respectively the extruding back mix with enter filament spinning component, coiling and molding, boundling, tension, stretch oneself and yawn, oil bath, secondary are stretched oneself and yawn, cross hot-stretch, stretch oneself and yawn for three times, curl, oven dry, cut-out, opening flow process be to finished product.
The bi-component raw material enters the screw rod melt extruded to melting the body filter, its temperature control by feed bin:
Polypropylene: 275 ℃ in a district, 295 ℃ in two districts, 295～305 ℃ in three districts, 300～310 ℃ in four districts, 290～295 ℃ in five districts, 290～295 ℃ of filters,
Polyethylene: 270 ℃ in a district, 280～290 ℃ in two districts, 290～295 ℃ in three districts, 290～300 ℃ in four districts, 285～295 ℃ in five districts, 280～290 ℃ of filters,
Screw pressure is respectively at 60～70 kilograms, and rotating speed 60～80 changes.
The concentric composite plate of spinnerets catheter type is φ 180 * 700 holes.
Before to spin the advance thread speed of semi-finished product boundling silk in five rollers together be 40～60 rev/mins, the oil bath temperature that enters in the oil bath is 70～95 ℃.
The oil bath tow carries out one time five roller stretches oneself and yawn, and stretching oneself and yawn multiple is 2～3 times, carries out secondary then under 2 kilograms of air pressure, 80～100 ℃ of conditions of temperature and stretches oneself and yawn, and stretching oneself and yawn multiple is 0.5～1 times.
Tow after the typing cuts off, and its length is 4～6mm.
On the basis that produces the ES low melting point composite short fiber; it is dynamic to face market development; set about researching and developing the compound short flannel product of PE/PP; mainly carry out the transformation and the adjustment of equipment; adopt the fiber of common injection molding PE and the compound production super fine denier of PP bi-component; carry out special cut-out equipment and be cut into 4mm～6mm length short flannel; the major product specification is by 0.8～0.9D * 4mm at present; 0.9D * 6mm; 0.8D three kinds of specifications of * 5mm; product is mainly used in " dry method of paper-making "; the dry method of paper-making is state-of-the-art in the world paper technology; it is to make paper industry thoroughly solve environmental pollution; change traditional wet papermaking severe contamination situation; also can improve the class of paper product; the compound short flannel of PE/PP is the main raw material of dry method of paper-making indispensability; along with the whole society of ecological environmental protection payes attention to and the improving constantly and improve of people's lives, it is more outstanding important that the environmental requirement of paper industry seems, will to this product at home and abroad the market demand increase day by day.
Below in conjunction with embodiment the present invention is described further again:
Technology for producing low fusing point composite short fibre of the present invention can embody by the process chart of Fig. 3 in the Figure of description.
Narrate respectively with the back finishing part by preceding spinning part:
(1) the preceding part of spinning:
1, two kinds of raw materials, promptly polypropylene, high density polyethylene (HDPE) add the storehouse that feeds intake separately.
2, enter the screw rod melt extruded to melting the body filter, its main worker by the feed bin polymer
Skill for screw pressure respectively at 60 kilograms～70 kilograms, screw speed changes 60～80.
3, screw rod extruding and filter temperature:
(1) polypropylene: 275 ℃ in a district, 295 ℃ in two districts, 295～305 ℃ in three districts, 300～310 ℃ in four districts, 290～295 ℃ in five districts, 290～295 ℃ of filters.
(2) polyethylene: 270 ℃ in a district, 280～290 ℃ in two districts, 290～295 ℃ in three districts, 290～300 ℃ in four districts, 285～295 ℃ in five districts, 280～290 ℃ of filters.
4, the extruding melt adopts gear wheel metering pump quantitatively to clamp-on composite head grip assembly and spinnerets two
Plant difference and melt bluk recombination in a filament, the melt spinning moulding.
(1) measuring pump adopts the 10cc gear pump, and rotating speed is: 15～18 rev/mins of propylene, 16～19 rev/mins of ethene.
(2) the concentric composite plate φ of spinnerets catheter type 180 * 700 holes.
(3) coiling feeding speed is 700～1200 meters/minute.
(2) back finishing part:
1. preceding spin the semi-finished product silk and enter the boundling tension bracket for 20～30 barrels, total denier was 500,000～600,000 dawn.
2. the boundling silk enters five rollers together, and five rollers advance 40～60 rev/mins of speed together.Enter oil bath by one five roller, oil bath temperature is 70～95 ℃.
3. the oil bath tow carries out one time five roller and stretches oneself and yawn, and stretching oneself and yawn multiple is 2.0～3 times, advances superheated vapor then, and air pressure is 2 kilograms, and temperature is 80～100 ℃, carries out secondary five rollers and stretches oneself and yawn, and stretching oneself and yawn multiple is 0.5～1.0 times.
4. by after advancing the tow that secondary five rollers stretch oneself and yawn, curl, curling back pressure is 2.5～3 kilograms, and 20～25/25mm of number that curls goes up the PK finish simultaneously.
5. the back heat-setting time that curls is 15～20 minutes, and setting temperature is 105～110 ℃ in a district, 110～115 ℃ in two districts, 115～120 ℃ in three districts, 100 ℃ in four districts.
6. the tow after the typing carries out this cutting machine cut-out of nut, and shearing length low melting point short flannel is 4mm～6mm.
7. the staple fibre after cutting off, short flannel by airduct be transported to baling press, the every bag of packing weight is 100～160 kilograms.
8. finished product warehouse entry.
Accompanying drawing 1 spins the part schematic flow sheet before being.
Accompanying drawing 2 is back finishing part schematic flow sheets.
Attached: the explanation of low fusing point composite short fibre process chart
| Sequence number | Content | Sequence number | Content |
| ????1 | Raw material A | ????9 | Crimping device |
| ????1′ | Raw material B | ????10 | Boundling |
| ????2 | Feed bin A | ????11 | Pre-tightening apparatus |
| ????2′ | Feed bin B | ????12 | The oil bath drawing-off |
| ????3 | Screw extruder A | ????13 | The superheated vapor drawing-off |
| ????3′ | Screw extruder B | ????14 | Curling, oil agent |
| ????4 | Filter A | ????15 | The shop silk device |
| ????4′ | Filter B | ????16 | Dryness finalization |
| ????5 | Casing A | ????17 | Cut off |
| ????5′ | Casing B | ????18 | Shredding |
| ????6 | The composite spinning spinning head | ????19 | Packing |
| ????7 | Cooling device | ????20 | Finished product |
| ????8 | The oil agent system |
Claims (6)
1, a kind of technology for producing low fusing point composite short fibre, it is characterized in that: be to be that polypropylene, two kinds of raw materials of high density polyethylene (HDPE) are base stock with bi-component, through feed bin separately, respectively the extruding back mix with enter filament spinning component, coiling and molding, boundling, tension, stretch oneself and yawn, oil bath, secondary are stretched oneself and yawn, cross hot-stretch, stretch oneself and yawn for three times, curl, oven dry, cut-out, opening flow process be to finished product.
2, technology for producing low fusing point composite short fibre according to claim 1 is characterized in that: the bi-component raw material enters the screw rod melt extruded to melting the body filter by feed bin, and its temperature is controlled to be:
Polypropylene: 275 ℃ in a district, 295 ℃ in two districts, 295～305 ℃ in three districts, 300～310 ℃ in four districts, 290～295 ℃ in five districts, 290～295 ℃ of filters,
Polyethylene: 270 ℃ in a district, 280～290 ℃ in two districts, 290～295 ℃ in three districts, 290～300 ℃ in four districts, 285～295 ℃ in five districts, 280～290 ℃ of filters,
Screw pressure is respectively at 60～70 kilograms, and rotating speed 60～80 changes.
3, technology for producing low fusing point composite short fibre according to claim 1 is characterized in that: the concentric composite plate of spinnerets catheter type is φ 180 * 700 holes.
4, technology for producing low fusing point composite short fibre according to claim 1 is characterized in that: preceding to spin the advance thread speed of semi-finished product boundling silk in five rollers together be 40～60 rev/mins, and the oil bath temperature that enters in the oil bath is 70～95 ℃.
5, technology for producing low fusing point composite short fibre according to claim 1, it is characterized in that: the oil bath tow carries out one time five roller and stretches oneself and yawn, stretching oneself and yawn multiple is 2～3 times, carries out secondary then under 2 kilograms of air pressure, 80～100 ℃ of conditions of temperature and stretches oneself and yawn, and stretching oneself and yawn multiple is 0.5～1 times.
6, technology for producing low fusing point composite short fibre according to claim 1 is characterized in that: the tow after the typing cuts off, and its length is 4～6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01103938 CN1209510C (en) | 2001-02-16 | 2001-02-16 | Technology for producing low fusing point composite short fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01103938 CN1209510C (en) | 2001-02-16 | 2001-02-16 | Technology for producing low fusing point composite short fibre |
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| Publication Number | Publication Date |
|---|---|
| CN1333390A true CN1333390A (en) | 2002-01-30 |
| CN1209510C CN1209510C (en) | 2005-07-06 |
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| CN 01103938 Expired - Fee Related CN1209510C (en) | 2001-02-16 | 2001-02-16 | Technology for producing low fusing point composite short fibre |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350083C (en) * | 2005-01-25 | 2007-11-21 | 陈成泗 | Process for production of special-shaped high polymer plastic-steel fabric |
| CN102888711A (en) * | 2011-07-19 | 2013-01-23 | 南通七小时纺织品科技有限公司 | Prescription of Meike (Chinese Name) cotton and preparation process of Meike cotton |
-
2001
- 2001-02-16 CN CN 01103938 patent/CN1209510C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350083C (en) * | 2005-01-25 | 2007-11-21 | 陈成泗 | Process for production of special-shaped high polymer plastic-steel fabric |
| CN102888711A (en) * | 2011-07-19 | 2013-01-23 | 南通七小时纺织品科技有限公司 | Prescription of Meike (Chinese Name) cotton and preparation process of Meike cotton |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1209510C (en) | 2005-07-06 |
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Effective date of registration: 20080627 Address after: Zhejiang Cixi Economic Development Zone Haitong Road (West) Dacheng new material Limited by Share Ltd Patentee after: Ningbo Dacheng Advanced Material Co., Ltd. Address before: Zhejiang city in Cixi Province Economic and Technological Development Zone hu Chong Road development new materials company into four collection Patentee before: Chen Chengsi |
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Assignee: Zhejiang Zhenbang Chemical Fiber Co. Ltd. Assignor: Ningbo Dacheng Advanced Material Co., Ltd. Contract fulfillment period: 2008.9.10 to 2016.9.9 Contract record no.: 2008330001498 Denomination of invention: Technology for producing low fusing point composite short fibre Granted publication date: 20050706 License type: Exclusive license Record date: 20081030 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.9.10 TO 2016.9.9; CHANGE OF CONTRACT Name of requester: ZHEJIANG PROVINCE ZHENBANG CHEMICAL FIBER CO., LTD Effective date: 20081030 |
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