CN101787581A - Ultrafine fiber based on recycled polyester and production method thereof - Google Patents
Ultrafine fiber based on recycled polyester and production method thereof Download PDFInfo
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- CN101787581A CN101787581A CN200910264753A CN200910264753A CN101787581A CN 101787581 A CN101787581 A CN 101787581A CN 200910264753 A CN200910264753 A CN 200910264753A CN 200910264753 A CN200910264753 A CN 200910264753A CN 101787581 A CN101787581 A CN 101787581A
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Abstract
The invention discloses a production method of recycled polyester ultrafine fiber based on bi-component fiber production equipment. The method comprises the following steps: taking recycled polyester chips and polycaprolactam chips as raw materials, conveying the two raw materials to a composite spinning box body after respectively crystallizing drying and extrusion melting; extruding by an insulating spinning measuring pump with accurate measurement; distributing the materials to each composite spinning assembly; compounding and forming the two components according to a shape set by a spinning assembly; extruding and cooling by side air blowing for forming; oiling by a nozzle tip; coiling into a recycled polyester ultrafine POY spinning cake by a coiling head; and then carrying out subsequent texturing processing to obtain applicable ultrafine fibers. After the method is adopted, by adjusting the processing technique, the recycled polyester raw materials are applied to high grade fibers, thereby improving effective application of resources, saving cost and having double significances of economy and environmental protection.
Description
Technical field
The present invention relates to a kind of super-fine fiber material and production method, especially a kind of recycled polyester raw material that utilizes is produced super-fine fiber material by the melt composite spinning method.
Background technology
Superfine fibre is meant the special fibre of filament number below 0.44dtex, because fiber is very thin, makes fabrics feel soft, and the surface is fluffy, outward appearance is plentiful and waterproof, ventilative, saturating wet function are arranged.Superfine fibre is once appearance, promptly garment market produced very big impulsive force, also changed the traditional view of people to chemical fibre, for comfortableness is melted in production, functional, flexibility provides new approach in the novel fabric of one.
The production technology of superfine fibre has a variety of, except direct fabrics and composite spinning method commonly used, also has methods such as super drawing method, flash spinning, turbulent flow spinning and meltblown.The technology of utilizing composite spinning to make superfine fibre is peeled off two kinds of method and island methods.The method of peeling off is that polyamide and two kinds of components of polyester are alternately distributed in a spinneret orifice, finally by chemical treatment or mechanical means, two components is peeled off, and makes a fiber split into many lobes fiber, and its filament number can reach 0.11～0.44dtex.The island method is that a kind of polymer is done the island component, and another kind of polymer is done sea component, and several islands are evenly distributed among the sea, and be contained in the fiber, make fabric after, the components dissolved in sea is fallen, stay the island component, just obtain superfine fibre, its filament number can reach 0.011～0.11dtex.
Direct spinning is because the orifice diameter that is adopted is less, the probability that produces lousiness and broken end in the spinning process is higher, therefore spinning chips or melt quality are had relatively high expectations, at present direct spinning is subjected to the restriction of spinning melt quality, fiber process technology and spinneret orifice processing and cleaning technique, be difficult to the manufacture order silk size below 0.33dtex, total fiber number at 167dtex to raise variety.
The composite spinning method is owing to used the bi-component raw material, and process equipment is than single spinning complexity, so the spinning process cost is higher.Common peeling off in the fiber, owing to use 15～30% nylon raw material, so cost of material is higher; And used about 30% water-soluble polyester component in the islands-in-sea type fibre, the manufacturing cost of superfine fibre is risen.Therefore the production cost of the fiber of producing by the composite spinning method is than direct fabrics method production cost height.
In recent years, along with attention to the regeneration of resource, the production of recycled polyester product is subjected to extensive attention, but because the performance of recycled polyester product is relatively poor relatively, higher owing to impurity content when spinning fine count fiber, waft in the spinning process silk, the broken end phenomenon serious, and resulting fine count fiber intensity is relatively poor, be difficult on thin dawn and the superfine Denier fibre and obtain application, therefore recycled polyester is mainly used in still can't being applied to the direct fabrics of superfine fibre in the production of doughnut, staple fibre and the conventional continuous yarn product of part at present.The class that how to improve the Regenerated Polyester Fibres product has crucial meaning.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of make full use of regenerated resources low production cost, good permeability, processing technology simple, applied widely, be easy to industrial superfine fibre and production method thereof based on recycled polyester.
According to technical scheme provided by the invention, the material of described superfine fibre comprises recycled polyester and polycaprolactam, and the cross sectional shape of super-fine fiber material is " rice " font, tangerine lobe type or " * " type; Described super-fine fiber material is handled by 80～115 ℃ of high temperature hydrogen aqueous solution of sodium oxide, and polycaprolactam and recycled polyester are peeled off, and obtains the recycled polyester superfine fibre.
Described super-fine fiber material is that the polycaprolactam of 65～85% recycled polyester and 15～35% is by composite spinning and add bullet processing (DTY processing) and form by percentage by weight.
After described super-fine fiber material was handled through sodium hydrate aqueous solution, the monofilament fineness of described recycled polyester superfine fibre was 0.11dtex～0.44dtex, and the cross section of described monofilament is fan-shaped.
The inherent viscosity of the raw material of described recycled polyester section is 0.52～0.83dl/g, and the raw material of described recycled polyester comes from a kind of in following approach or the material:
After A, useless PET polyester bottles are cleaned, pulverized, directly use as raw material through super-dry;
After B, useless PET polyester bottles cleaning, pulverizing reach fusion again, pelletizing again;
Raw materials such as C, useless PET bottle base, useless PET film or plastic uptake sheet directly use through cleaning, pulverizing, or through cleaning, pulverize and again after the fusion, pelletizing again;
D, polyester waste silks are processed into foam material, perhaps fusion pelletizing again again through friction;
E, the fusion pelletizing again after cleaning or cleaning of useless polyester slice;
F, two kinds in several useless raw materials of above-mentioned A～E or several are mixed direct use, or pelletizing after the fusion again;
G, the described raw material of above-mentioned A～F added or do not added powder such as brightening agent, delustering agent or pigment or master batch uses as raw material.
Described polycaprolactam Material Characteristics viscosity is 2.4～2.7dl/g.
A kind of production method of superfine fibre is characterised in that, described method comprises the following steps:
1. the recycled polyester section is first raw material; Enter first screw extruder behind the recycled polyester chip drying, but become the polyester fondant of spinning through the melt extruded of first screw extruder, and this polyester fondant is transported in the spinning manifold, further be evenly distributed in the composite spining module of spinning manifold, as first component;
2. be second raw material with the polycaprolactam section, enter second screw extruder after the drying, but become the polyester fondant of spinning through the melt extruded of second screw extruder, and this polyester fondant is transported in the spinning manifold, further be evenly distributed in the composite spining module of spinning manifold, as second component;
3. first component and second component of moulding in the composite spining module of spinning manifold are extruded, through drying, cool off, oil and reel processing, obtained the ultra-fine POY fiber of bi-component, winding speed is 2500m/min～3800m/min.
The ultra-fine POY fiber of the bi-component that obtains is 1.3～1.95 in the drawing-off multiplying power, heater temperature is to carry out DTY processing under 120～200 ℃ the condition, obtains described super-fine fiber material.
Super-fine fiber material proposed by the invention can be used for aspects such as ultra-fine towel, ultra-fine Chenille Yarns and senior cleaning material, compares with the conventional composite superfine fibre, and cost of material is cheap; Compare with the Direct Spinning superfine fibre, fibre fineness is low.When improving product competitiveness, because employed raw material is the regeneration application of resource, the advantage that had recycle concurrently, economizes on resources.
Description of drawings
Fig. 1 is a flow sheet of the present invention.
The specific embodiment
Super-fine fiber material raw materials by weight of the present invention is calculated, and recycled polyester accounts for 65%～85% of gross weight, and polycaprolactam accounts for 15%～35% of gross weight.After opening fine the processing through 80～115 ℃ sodium hydrate aqueous solution, Regenerated Polyester Fibres has tangible fan-shaped feature, and the filament number scope after the processing is 0.11dtex～0.44dtex.
The production method of super-fine fiber material of the present invention is: with above-mentioned two kinds of prepared using bi-component spinning machines respectively through entering composite spining module after screw rod extruding, fusion, conveying and the metering, again through supercooling, oil and reel, obtain the POY fiber; Obtain can be used for woven super-fine fiber material through adding the bullet processing again.
In the preparation process of product of the present invention, make raw material and the method that fibrous material and alkali hydrolysis method carry out in the stripping process and all belong to those skilled in the art and producers' technique known content, therefore in specific embodiment, this part content is omitted by the bi-component spinning machine.
The bi-component spinning machine is not limited among the following embodiment,, do not influence the preparation of described superfine fibre though be because the manufacturer of bi-component spinning machine is different with model.
Embodiment 1
Shown in accompanying drawing, the present invention is based on common double component fibre production equipment and carry out recycled polyester superfine fibre POY production, it is respectively by to reclaim polyester beverage bottle through chopping, after the drying again the fusion recycled polyester section A and the polycaprolactam section B that carry out the granulation gained be that (inherent viscosity of recycled polyester section A is 0.695 to raw material, the inherent viscosity of polycaprolactam section B is 2.4), with recycled polyester cut into slices two kinds of raw materials of A and polycaprolactam section B through crystallizing and drying machine 1 drying after, behind first extruder, 2 second extruders, 3 extrusion moltens, send into composite spinning casing 4 respectively, spinning pump accurate measurement through insulation is extruded, be assigned in each composite spining module, after extruding again through the lateral blowing cooling forming, oil nozzle 5 oils, and first draw-off godet 6, second spinning reel 7 guidings are coiled into ultra-fine POY fiber by winding head 8.
In said process, recycled polyester section A after drying, its moisture content＜35PPM, polycaprolactam section B after drying, its moisture content＜130PPM is provided with some thermals treatment zone in the extrusion molten process to recycled polyester section A, the heating-up temperature in each district is located between 260～288 ℃, be provided with some thermals treatment zone in the extrusion molten process to polycaprolactam section B, the heating-up temperature in each district is located between 245～280 ℃; Coiling speed is 2500m/min～3800m/min, the recycled polyester superfine fibre POY spinning cake that processes, and its fiber number is 290dtex, fracture strength 〉=1.5cN/dtex, elongation at break E=96～160%, oil content are 0.4～0.7%, and bar is done U value≤1.4%.
Gained POY fiber is added bullet on elasticizer on the friction disk type, the first hot case, second heater temperature are respectively 165～195 ℃ and room temperature～150 ℃, and draw ratio is 1.52～1.79, and the D/Y ratio is 1.32～1.78, and process velocity is 450～750m/min.Gained DTY fibre number is 190dtex, fracture strength 〉=2.5cN/dtex, and elongation at break E=15～32%, oil content are 2.5～5.5%, it is more than 93% that stock-dye M leads (4.0 grades on ash card).
With above-mentioned fiber is main raw material, after carrying out weft knitting processing on the circular knitting machine, opening fibre, dyeing and typing through the alkali decrement again handles (identical with polyester-nylon composite superfine fibre weft knitting towel processing technology, be public technology in the industry), obtain filament number and be the weft-knitted towel that the superfine fibre of 0.3dtex is formed.Can be used for high-grade cloth for cleaning.
Embodiment 2
Shown in accompanying drawing, the present invention is based on common double component fibre production equipment and carry out recycled polyester superfine fibre POY production, it is respectively by to reclaim polyester beverage bottle through cleaning, the recycled polyester section C of letter sorting and chopping gained and polycaprolactam section B are that (inherent viscosity of recycled polyester section C is 0.736 to raw material, the inherent viscosity of polycaprolactam section B is 2.4), with recycled polyester cut into slices two kinds of raw materials of C and polycaprolactam section B through crystallizing and drying machine 1 drying after, behind first extruder, 2 second extruders, 3 extrusion moltens, send into composite spinning casing 4 respectively, spinning pump accurate measurement through insulation is extruded, be assigned in each composite spining module, after extruding again through the lateral blowing cooling forming, oil nozzle 5 oils, and first draw-off godet 6, second spinning reel 7 guidings are coiled into ultra-fine POY fiber by winding head 8.
In said process, recycled polyester section C after drying, its moisture content＜45PPM, polycaprolactam B after drying, its moisture content＜130PPM is provided with some thermals treatment zone in the extrusion molten process to recycled polyester section C, the heating-up temperature in each district is located between 250～278 ℃, be provided with some thermals treatment zone in the extrusion molten process to polycaprolactam section B, the heating-up temperature in each district is located between 245～275 ℃; Coiling speed is 2500m/min～3800m/min, the recycled polyester superfine fibre POY spinning cake that processes, and its fracture strength 〉=1.4cN/dtex, elongation at break E=101～167%, oil content are 0.4～0.7%, bar is done U value≤1.6%.
Gained POY fiber is added bullet on elasticizer on the friction disk type, the first hot case, second heater temperature are respectively 155～195 ℃ and room temperature to 150 ℃, and draw ratio is 1.52～1.85, and the D/Y ratio is 1.32～1.78, and process velocity is 450～750m/min.Gained DTY fibrous fracture intensity 〉=2.4cN/dtex, elongation at break E=15～32%, oil content are 2.5～5.5%, it is more than 93% that stock-dye M leads (4.0 grades on ash card).
With above-mentioned fiber is main raw material, carry out Chenille Yarns processing (conventional Chenille Yarns processing technology with the 20s polyester, public technology in the industry), can obtain the chenille yarn of 0.8s～1s, again after carrying out carpet processing on the tufted carpet machine, open fibre, dyeing and typing through the alkali decrement and handle, obtaining filament number is the Chenille Yarns carpet of the superfine fibre composition of 0.28dtex.Can be used for cloth for cleanings such as high-grade ground cushion, high-grade rag.
Embodiment 3
Shown in accompanying drawing, the present invention is based on common double component fibre production equipment and carry out recycled polyester superfine fibre POY production, it is that (inherent viscosity of recycled polyester section D is 0.586 to raw material by the foam material recycled polyester section D and the polycaprolactam section B that process gained through friction with the nothing oil silk of conventional polyester spinning process generation respectively, the inherent viscosity of polycaprolactam section B is 2.7), recycled polyester is cut into slices two kinds of raw materials of D and polycaprolactam section B through crystallizing and drying machine 1 dry back (recycled polyester section D raw material does not need to carry out pre-crystallization), behind first extruder, 2 second extruders, 3 extrusion moltens, send into composite spinning casing 4 respectively, spinning pump accurate measurement through insulation is extruded, be assigned in each composite spining module, after extruding again through the lateral blowing cooling forming, oil nozzle 5 oils, and first draw-off godet 6, second spinning reel 7 guidings are coiled into ultra-fine POY fiber by winding head 8.
In said process, foam material recycled polyester section D after drying, its moisture content＜35PPM, polycaprolactam section B after drying, its moisture content＜130PPM is provided with some thermals treatment zone in the extrusion molten process to recycled polyester section D, the heating-up temperature in each district is located between 245～280 ℃, be provided with some thermals treatment zone in the extrusion molten process to polycaprolactam section B, the heating-up temperature in each district is located between 245～280 ℃; Coiling speed is 2500m/min～3800m/min, the recycled polyester superfine fibre POY spinning cake that processes, and its fracture strength 〉=1.5cN/dtex, elongation at break E=90～150%, oil content are 0.4～0.7%, bar is done U value≤1.4%.
Gained POY fiber is added bullet on elasticizer on the friction disk type, the first hot case, second heater temperature are respectively 150～195 ℃ and room temperature～150 ℃, and draw ratio is 1.52～1.79, and the D/Y ratio is 1.32～1.78, and process velocity is 450～750m/min.Gained DTY fibrous fracture intensity 〉=2.5cN/dtex, elongation at break E=15～32%, oil content are 2.5～5.5%, it is more than 90% that stock-dye M leads (4.0 grades on ash card).
With above-mentioned fiber is through compiling veil, conventional 150D low elastic polyester filament is through compiling filling, after being machined to towel through the volume towel, open fibre, dyeing and typing through the alkali decrement again and handle, obtaining filament number is the superfine fibre towel of the superfine fibre composition of 0.28dtex.Can be used for bathing gown, do a towel, reach high-grade rag.
Claims (7)
1. superfine fibre based on recycled polyester, it is characterized in that: the material of described superfine fibre comprises recycled polyester and polycaprolactam, the cross sectional shape of super-fine fiber material is " rice " font, tangerine lobe type or " * " type; Described super-fine fiber material is handled by 80～115 ℃ of high temperature hydrogen aqueous solution of sodium oxide, and polycaprolactam and recycled polyester are peeled off, and obtains the recycled polyester superfine fibre.
2. superfine fibre as claimed in claim 1 is characterized in that: described super-fine fiber material is that the polycaprolactam of 65～85% recycled polyester and 15～35% is by composite spinning and add bullet and process by percentage by weight.
3. superfine fibre as claimed in claim 1 or 2 is characterized in that: after described super-fine fiber material was handled through sodium hydrate aqueous solution, the monofilament fineness of described recycled polyester superfine fibre was 0.11dtex～0.44dtex, and the cross section of described monofilament is fan-shaped.
4. superfine fibre as claimed in claim 2 is characterized in that: the inherent viscosity of the raw material of described recycled polyester section is 0.52～0.83dl/g, and the raw material of described recycled polyester comes from a kind of in following approach or the material:
After A, useless PET polyester bottles are cleaned, pulverized, directly use as raw material through super-dry;
After B, useless PET polyester bottles cleaning, pulverizing reach fusion again, pelletizing again;
C, useless PET bottle base, useless PET film or plastic uptake sheet use through cleaning, pulverizing directly, or through cleaning, pulverize and again after the fusion, pelletizing again;
D, polyester waste silks are processed into foam material, perhaps fusion pelletizing again again through friction;
E, the fusion pelletizing again after cleaning or cleaning of useless polyester slice;
F, two kinds in several useless raw materials of above-mentioned A～E or several are mixed direct use, or pelletizing after the fusion again;
G, powder or master batch that the described raw material of above-mentioned A～F is added brightening agent, delustering agent or pigment use as raw material.
5. superfine fibre as claimed in claim 1 or 2 is characterized in that: described polycaprolactam Material Characteristics viscosity is 2.4～2.7dl/g.
6. the method for production claim 1 or 2 described superfine fibres is characterized in that described method comprises the following steps:
1. the recycled polyester section is first raw material; Enter first screw extruder behind the recycled polyester chip drying, but become the polyester fondant of spinning through the melt extruded of first screw extruder, and this polyester fondant is transported in the spinning manifold, further be evenly distributed in the composite spining module of spinning manifold, as first component;
2. be second raw material with the polycaprolactam section, enter second screw extruder after the drying, but become the polyester fondant of spinning through the melt extruded of second screw extruder, and this polyester fondant is transported in the spinning manifold, further be evenly distributed in the composite spining module of spinning manifold, as second component;
3. first component and second component of moulding in the composite spining module of spinning manifold are extruded, through drying, cool off, oil and reel processing, obtained the ultra-fine POY fiber of bi-component, winding speed is 2500m/min～3800m/min.
7. as the method for superfine fibre as described in the claim 6, it is characterized in that: the ultra-fine POY fiber of the bi-component that obtains is 1.3～1.95 in the drawing-off multiplying power, heater temperature is to carry out DTY processing under 120～200 ℃ the condition, obtains described super-fine fiber material.
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| CN200910264753A CN101787581A (en) | 2009-12-30 | 2009-12-30 | Ultrafine fiber based on recycled polyester and production method thereof |
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| CN200910264753A CN101787581A (en) | 2009-12-30 | 2009-12-30 | Ultrafine fiber based on recycled polyester and production method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887240A (en) * | 2016-04-19 | 2016-08-24 | 郑州四维特种材料有限责任公司 | Pre-oriented polyester yarns and preparation method thereof and polyester fiber fabrics and preparation method thereof |
| CN107130311A (en) * | 2017-05-17 | 2017-09-05 | 新凤鸣集团湖州中石科技有限公司 | A kind of terylene semi-gloss fine denier POY fiber and its production method |
| CN111005088A (en) * | 2019-11-05 | 2020-04-14 | 宁波三邦超细纤维有限公司 | Regenerated environment-friendly polyester-nylon composite superfine fiber and preparation method thereof |
| CN111005130A (en) * | 2019-12-26 | 2020-04-14 | 吴江市凯越纺织有限公司 | Environment-friendly regenerated quick-drying towel |
| CN111691007A (en) * | 2020-05-25 | 2020-09-22 | 苏州金莱特化纤有限公司 | Preparation process of bi-component superfine composite fiber |
| CN112796004A (en) * | 2020-12-31 | 2021-05-14 | 宁波三邦超细纤维有限公司 | Micron silk composite superfine fiber and preparation method thereof |
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2009
- 2009-12-30 CN CN200910264753A patent/CN101787581A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887240A (en) * | 2016-04-19 | 2016-08-24 | 郑州四维特种材料有限责任公司 | Pre-oriented polyester yarns and preparation method thereof and polyester fiber fabrics and preparation method thereof |
| CN105887240B (en) * | 2016-04-19 | 2018-10-26 | 郑州四维特种材料有限责任公司 | A kind of terylene pre-oriented fiber and preparation method thereof, dacron fabric and preparation method thereof |
| CN107130311A (en) * | 2017-05-17 | 2017-09-05 | 新凤鸣集团湖州中石科技有限公司 | A kind of terylene semi-gloss fine denier POY fiber and its production method |
| CN107130311B (en) * | 2017-05-17 | 2019-10-18 | 新凤鸣集团湖州中石科技有限公司 | A kind of terylene semi-gloss fine denier POY fiber and its production method |
| CN111005088A (en) * | 2019-11-05 | 2020-04-14 | 宁波三邦超细纤维有限公司 | Regenerated environment-friendly polyester-nylon composite superfine fiber and preparation method thereof |
| CN111005130A (en) * | 2019-12-26 | 2020-04-14 | 吴江市凯越纺织有限公司 | Environment-friendly regenerated quick-drying towel |
| CN111691007A (en) * | 2020-05-25 | 2020-09-22 | 苏州金莱特化纤有限公司 | Preparation process of bi-component superfine composite fiber |
| CN112796004A (en) * | 2020-12-31 | 2021-05-14 | 宁波三邦超细纤维有限公司 | Micron silk composite superfine fiber and preparation method thereof |
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Application publication date: 20100728 |