CN104264287A - Method for preparing rope net ribbon-like filaments by drawing waste and old polyethylene terephthalate (PET) bottle sheets - Google Patents
Method for preparing rope net ribbon-like filaments by drawing waste and old polyethylene terephthalate (PET) bottle sheets Download PDFInfo
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- CN104264287A CN104264287A CN201410387316.0A CN201410387316A CN104264287A CN 104264287 A CN104264287 A CN 104264287A CN 201410387316 A CN201410387316 A CN 201410387316A CN 104264287 A CN104264287 A CN 104264287A
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- 239000002699 waste material Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 26
- -1 polyethylene terephthalate Polymers 0.000 title abstract description 10
- 229920000139 polyethylene terephthalate Polymers 0.000 title abstract 7
- 239000005020 polyethylene terephthalate Substances 0.000 title abstract 7
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000001035 drying Methods 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 33
- 229920000728 polyester Polymers 0.000 claims description 31
- 239000002994 raw material Substances 0.000 claims description 26
- 238000009987 spinning Methods 0.000 claims description 26
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000003921 oil Substances 0.000 claims description 17
- 238000004321 preservation Methods 0.000 claims description 16
- 238000005485 electric heating Methods 0.000 claims description 15
- 230000000740 bleeding effect Effects 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 10
- 239000003063 flame retardant Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 229920006267 polyester film Polymers 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 9
- 239000000178 monomer Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 8
- 238000005098 hot rolling Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 5
- 230000008025 crystallization Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000002036 drum drying Methods 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims description 5
- 239000003500 flue dust Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 230000002045 lasting effect Effects 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 15
- 239000004698 Polyethylene Substances 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 235000003143 Panax notoginseng Nutrition 0.000 description 1
- 241000180649 Panax notoginseng Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000005539 carbonized material Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013502 plastic waste Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- 238000009958 sewing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Artificial Filaments (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention belongs to the technical field of recovery and recycle of waste and old polyethylene terephthalate (PET) bottle sheets and relates to a method for preparing rope net ribbon-like filaments by drawing waste and old PET bottle sheets. The rope net ribbon-like filaments obtained by the method has high ribbon-like filament strength, acid resistance, wear resistance, high chemical stability and good light resistance, can be used for 3-5 years, does not become brittle at a temperature of -40 to 250 DEG C and has a low cost. The method utilizes PET reclaimed materials to replace PET slices and polyethylene (PE) for ribbon-like filament production, saves energy, reduces a production cost, satisfies national industrial policy requirements and has outstanding features and substantial progress.
Description
Technical field
The invention belongs to the technical field that waste polyester bottle chip (PET) is recycled, be specially the method for a kind of waste polyester bottle chip (PET) for netting yarn drawing.
Background technology
Sunshade net is a kind of netted novel agricultural plastics cladding material, has the multiple efficacies such as shading, damping, soil moisture conservation, anti-heavy rain, anti-strong wind, antifreeze, diseases prevention worm coly evil.At present, producing sunshade net is for raw material with polyethylene (PE), it has the features such as low temperature resistant, brute force is large, ABRASION RESISTANCE is good, but under the effect of air, sunlight and oxidation, can occur aging, variable color, chap, become fragile or efflorescence, lose its mechanical property, especially the corrosion of not powerful oxidation corrosion resistance, as the mixed liquor of fuming sulphuric acid, red fuming nitric acid (RFNA), chromic acid and sulfuric acid, at room temperature above-mentioned solvent can produce corrosion function slowly to polyethylene, and at 90-100 DEG C, the concentrated sulfuric acid and red fuming nitric acid (RFNA) can corrode polyethylene rapidly, make it destroy or decompose.
Application number be the Chinese invention patent application " a kind of PET of utilization produces the method for flat filament " of 201410059274.8 (notification number is CN103789869A) disclose utilize PET polyester slice and flexibilizer, antioxidant, filler to carry out mixing, drying, cool, heat, drawing-off, TENSILE STRENGTH 200MPa is produced in rolling, elongation at break is less than 50% PET flat filament, be applied to and produce high performance woven bag and container bag field, although instead of polyethylene (PE) with PET polyester slice, raw material is still petroleum derivation product-PET polyester slice.
The Chinese invention patent application " a kind of Polywoven Bag production technology " of application number 201310453654.5 (notification number is CN103572392A) discloses and utilizes 50-58% acrylic resin PPT30,25-30% acrylic resin PP045,10-20% filling master batch through batch mixing, wire drawing, braiding, Yin Qie, sewing five technical process, makes Polywoven Bag.Raw material acrylic resin PP is petroleum derivation product and poor, the oxidizable market instructions for use not reaching sunshade net of weatherability.
Within 2013, China plastic article real consumption amount is 3,000 ten thousand tons, and waste plastic generation is about 1,000 ten thousand tons, discharge ratio about 33%.Utilize waste and old polyester bottle to substitute polythene PE for raw material production sunshade net and other flat filament meshi fabrics, solving " white garbage " and pollute and improve technics of reclaim of plastic waste rate, is an important channel of turning waste into wealth and solving ecological environmental pollution.
Comprehensively above-mentioned, existing market in the urgent need to one about the composition of raw materials and the production and processing technology improvement opportunity that utilize waste polyester bottle chip (PET reclaimed materials) to produce flat filament.
Summary of the invention
The object of the invention is to for above-mentioned Problems existing and provide a kind of waste polyester bottle chip (PET reclaimed materials) for the method for netting yarn drawing, the flat filament intensity of producing is large, acidproof, wear-resisting, chemical stability is high and have good light fastness, can 3-5 be used, not brittle and cost is low in the temperature of-40 DEG C to 250 DEG C.
The technical solution adopted in the present invention is:
Waste polyester bottle chip is used for a method for netting yarn drawing, the steps include:
(1) cleaning is pulverized: waste and old polyester bottle (hereinafter referred to as PET reclaimed materials) is carried out the bottle sheet that cutting and grinding are diameter 12mm-14mm, then washes through clear water heat, dewater, hot wash water temperature 85 DEG C-90 DEG C;
(2) preparation raw material: the following component comprising weight percent meter, PET reclaimed materials 96 ~ 98%; Masterbatch 1 ~ 3%; Fire retardant 0.5 ~ 2%;
(3) crystallizing and drying: raw material is sent into rolling in crystallizing and drying device and lasting through feeding machine and stirred, crystallization is carried out after 2 hours by heating medium for heating to 140 DEG C-180 DEG C, again at this temperature inner drying 4-6 hour, vacuumize continuously with vavuum pump therebetween, making to produce negative pressure pressure in crystallizing and drying device is 0.8mPa-0.95mPa, extract the flue dust that moisture contained in raw material and impurity produce in pyroprocess, make moisture be reduced to≤0.5 ‰; Raw material long-time roll stir and in drying crystalline process in it strand change;
(4) be incubated: the material that crystallizing and drying is crossed is sent in heat preservation and dryness feed bin, carry out drying by the continual supply hot blast of air-heater and be incubated 4-6 hour;
(5) upper color spinning: the material that above-mentioned heat preservation and dryness is crossed enters plastic extruder, heater via sectional is heated fusing, the impurity in melt is isolated via monomer switch filtering device, melt is sent in V-type manifold by spinning pump high pressure, extrudes that width is 1000-1600mm, thickness is the polyester film of 15-25dmm through V-type spinning mould;
(6) drafting forming: extrude polyester film through V-type spinning mould, heat through twice hot-rolling, embryophoric membrane is become to swaging, 160-300 bar flat filament is evenly cut into again through cutter, hot gas spring 2-3 is added doubly through 90 DEG C of heating agent electric-heating heat-conductive oils through one group of seven axle drawing machine, hot gas spring 1.2-1.5 is added doubly through 120 DEG C of heating agent electric-heating heat-conductive oils again through one group of seven axle drawing machine, finally by one group of seven axle drawing machine and through the sizing of 170 DEG C of heating agent electric-heating heat-conductive oil heating retractions, produce that thickness is 3-5dmm, width is the flat filament of 1.5-3mm, receive silk machine through single ingot and receive silk coiling and molding.
In described step 3, crystallizing and drying device is vacuum drum drying machine.
The temperature 150 DEG C-180 DEG C of hot blast in described step 4, carries out continuing dry insulation to material, can make material in feed bin after crystallizing and drying, keep homogeneous temperature before entering plastic extruder, avoid the moisture absorption of lowering the temperature.
High pressure in described step 5 is pressure 8-14mpa, and in order to increase fusant density, pressure is too high lower than wire broken rate during 8mpa spinning, and pressure there will be melt higher than 14mpa spinning pump and exosmoses, and when pressure remains on 8-14mpa, the flat filament extruded is even.
Section of heating in described step 5 is a district 170-175 DEG C, two district 190-195 DEG C, three district 220-240 DEG C, four district 260-270 DEG C, five district 280-290 DEG C, six district 280-290 DEG C.
In described step 5, in described spinning process, monomer switch filtering device is applicant's Curve guide impeller voluntarily, specific as follows, comprise charging aperture, discharging opening, filter A and filter B, it is characterized in that, described filter A and filter B are arranged in parallel, the branch road of its middle filtrator A connects inlet valve, filter A, the outlet valve of filter A, discharging opening for charging aperture, filter A successively, the air bleeding valve of filter A is set in the upper end of filter A, the low valve of filter A is set in the lower end of filter A; The branch road of filter B connects inlet valve, filter B, the outlet valve of filter B, discharging opening for charging aperture, filter B successively, arranges the air bleeding valve of filter B in the upper end of filter B, arranges the low valve of filter B in the lower end of filter B.
The area of described filter is 1-3.5 ㎡.
In described step 6, hot-rolling heating adopts conduction oil as heating agent, and temperature 92 DEG C can increase brute force and be conducive to the draw orientation of monofilament.
Flat filament obtained above can be woven to screen cloth by common process, then makes sunshade net and other flat filament meshi fabric finished product, packaging and warehousing.
The step of the flat filament braiding screen cloth obtained is:
A. silk is received through compiling: the flat filament that drafting forming is crossed, after line pressure silk device, is concentrated income winding head by receipts silk machine, formed netting regenerated silk;
B. through compiling: winding head is loaded warp knitting machine and tow is divided into monofilament and penetrates in guide chase ring and carry out being woven into screen cloth;
C. make: the screen cloth cut carried out sew, make sunshade net and other flat filament meshi fabric finished product, packaging and warehousing after riveting button, wire rope handling.
Sunshade net product can be widely used in the purposes such as civilian cultivation sunshade net, the sunshade of Yunnan notoginseng medicinal material, Shouguang green house of vegetables sunshade, the covering of harbour grain goods, municipal refuse covering and use.
Raw material of the present invention: waste and old mineral water bottle taken from by waste and old polyester bottle (PET) reclaimed materials more; Masterbatch G4271 is commercial polyesters fiber Masterbatch, and fire retardant TA9098 is commercially available halogen-free flame retardants.
Beneficial effect of the present invention is:
The PET adopting process of the present invention to obtain regenerates flat filament superior performance, flat filament TENSILE STRENGTH is 420-460mPa, elongation at break is greater than 15%, reach the flat filament index [application number is the Chinese invention patent application " a kind of method utilizing PET to produce flat filament " of 201410059274.8 (notification number is CN103789869A)] that PET polyester slice is produced, can meet the requirement of producing sunshade net and other flat filament meshi fabrics, PET reclaimed materials is the fine substitute of PET polyester slice and PE polyethylene production flat filament.
Carry out ageing-resistant test by Ultraviolet radiation, completely up to standard, it is ageing-resistant is the poly 1.5-2 of PE times, polyacrylic 4 times of PP; And have good elasticity, ABRASION RESISTANCE and resistance to impact, in establishment, do not split silk and anti-aging, colour-fast, its softening temperature and melting temperature are respectively 248 DEG C and 276 DEG C, good heat resistance, 140 DEG C, 48 hours duration can not change its performance.
In a word, the sunshade net that the present invention obtains and other flat filament meshi fabric strength properties good, ageing-resistant effective and replace PET polyester slice and PE polyethylene production flat filament with PET reclaimed materials, both save the energy and again reduce production cost, meet national industrial policies requirement, possess outstanding substantive distinguishing features and significant progress.
Accompanying drawing explanation
Fig. 1 is the structural representation of the monomer switch filtering device in the present invention;
1-filter A, 2-filter B, the air bleeding valve of 3-filter A, the low valve of 4-filter A, the inlet valve of 5-filter A, the outlet valve of 6-filter B, the outlet valve of 7-filter A, the inlet valve of 8-filter B, the low valve of 9-filter B, 10-charging aperture, 11-discharging opening, the air bleeding valve of 12-filter B.
Detailed description of the invention
Below by specific embodiment, technical scheme of the present invention is described in detail.
First monomer switch filtering device in the spinning process in the present invention is introduced: comprise charging aperture, discharging opening, filter A and filter B, described filter A and filter B are arranged in parallel, the branch road of its middle filtrator A connects inlet valve, filter A, the outlet valve of filter A, discharging opening for charging aperture, filter A successively, the air bleeding valve of filter A is set in the upper end of filter A, the low valve of filter A is set in the lower end of filter A; The branch road of filter B connects inlet valve, filter B, the outlet valve of filter B, discharging opening for charging aperture, filter B successively, arranges the air bleeding valve of filter B in the upper end of filter B, arranges the low valve of filter B in the lower end of filter B.
The area of described filter is 1-3.5 ㎡.
Its course of work is as follows: prepare to be switched to filter A1 from filter B 2, when filter B 2 pressure reduction reaches 9MPa, first by air bleeding valve 3 standard-sized sheet of filter A1, the low valve 4 of filter A is closed, the slightly inlet valve 5 of opened filter A, filling small part melt is carried out as inlet pressure decline 0.6MPa, when the air bleeding valve 3 of filter A discharge melt qualified after, slightly close the inlet valve 5 of filter A, the slightly outlet valve 6 of opened filter B, make pressure drop 0.4MPa, part is now still had to carbonize particle, degraded polypropylene is discharged, after discharge melt is qualified, close the air bleeding valve 3 of filter A, the inlet valve 5 of standard-sized sheet filter A, the outlet valve 7 of filter A switches, the outlet valve 6 of rear complete shut-down filter B, the inlet valve 8 of filter B switches complete.By this device avoid carbonized material, yellow material generation and affect spinning.
Embodiment 1
(1) pulverize cleaning: waste and old polyester bottle (hereinafter referred to as PET reclaimed materials) is carried out the bottle sheet that cutting and grinding are diameter 12mm-14mm, then wash (water temperature 85 DEG C), dehydration through clear water heat;
(2) prepare burden: take raw material 1500kg (TA9098 halogen-free flame retardants) according to proportioning PET reclaimed materials 96%, Masterbatch 3% (polyester G4271), fire retardant 1%;
(3) crystallizing and drying: raw material is sent into rolling in crystallizing and drying device (vacuum drum drying machine) and lasting through feeding machine and stirred, crystallization is carried out after 2 hours by heating medium for heating to 140 DEG C, again this temperature inner drying 4 hours, vacuumize continuously with vavuum pump therebetween, make to produce negative pressure in crystallizing and drying device, pressure is 0.8mPa, extracts the flue dust that moisture contained in raw material and impurity produce in pyroprocess, make moisture be reduced to≤0.5 ‰; Raw material long-time roll stir and in drying crystalline process in it strand change;
(4) be incubated: the material that crystallizing and drying is crossed is sent in heat preservation and dryness feed bin, carries out heat preservation and dryness, heat preservation and dryness 4 hours by the continual supply hot blast of air-heater (temperature 150 DEG C);
(5) upper color spinning: the material that above-mentioned heat preservation and dryness is crossed enters plastic extruder, heater via sectional is heated fusing, the impurity in melt is isolated via monomer switch filtering device (filter area is 1 ㎡), melt is sent in V-type manifold by spinning pump high pressure, extrudes that width is 1000mm, thickness is the polyester film of 15dmm through V-type spinning mould;
(6) drafting forming: extrude polyester film through V-type spinning mould, heat through twice hot-rolling, embryophoric membrane is become to swaging, 160 flat filaments are evenly cut into again through cutter, through one group of seven axle drawing machine (90 DEG C of heating agent electric-heating heat-conductive oils) drawing-off 2 times, again through one group of seven axle drawing machine (120 DEG C of heating agent electric-heating heat-conductive oils) drawing-off 1.2 times, finally by the sizing of one group of seven axle drawing machine (170 DEG C of heating agent electric-heating heat-conductive oils) retraction, produce that thickness is 3dmm, width is the flat filament of 1.5mm, receive silk machine through single ingot and receive silk coiling and molding.Monofilament tensile strength is 460mPa, and elongation at break is 20%, can meet the requirement of producing sunshade net and other flat filament meshi fabrics.
Embodiment 2
(1) pulverize cleaning: waste and old polyester bottle (hereinafter referred to as PET reclaimed materials) is carried out the bottle sheet that cutting and grinding are diameter 12mm-14mm, then wash (water temperature 90 DEG C), dehydration through clear water heat;
(2) prepare burden: take raw material 1500kg (TA9098 halogen-free flame retardants) according to proportioning PET reclaimed materials 97%, Masterbatch 1% (polyester G4271), fire retardant 2%;
(3) crystallizing and drying: raw material is sent into rolling in crystallizing and drying device (vacuum drum drying machine) and lasting through feeding machine and stirred, crystallization is carried out after 2 hours by heating medium for heating to 160 DEG C, again this temperature inner drying 5 hours, vacuumize continuously with vavuum pump therebetween, make to produce negative pressure in crystallizing and drying device, pressure is 0.95mPa, extracts the flue dust that moisture contained in raw material and impurity produce in pyroprocess, make moisture be reduced to≤0.5 ‰; Raw material long-time roll stir and in drying crystalline process in it strand change;
(4) be incubated: the material that crystallizing and drying is crossed is sent in heat preservation and dryness feed bin, carries out heat preservation and dryness, heat preservation and dryness 5 hours by the continual supply hot blast of air-heater (temperature 160 DEG C);
(5) upper color spinning: the material that above-mentioned heat preservation and dryness is crossed enters plastic extruder, heater via sectional is heated fusing, the impurity in melt is isolated via monomer switch filtering device (filter area is 3.5 ㎡), melt is sent in V-type manifold by spinning pump high pressure, extrudes that width is 1300mm, thickness is the polyester film of 20dmm through V-type spinning mould;
(6) drafting forming: extrude polyester film through V-type spinning mould, heat through twice hot-rolling, embryophoric membrane is become to swaging, 230 flat filaments are evenly cut into again through cutter, through one group of seven axle drawing machine (90 DEG C of heating agent electric-heating heat-conductive oils) drawing-off 2.5 times, again through one group of seven axle drawing machine (120 DEG C of heating agent electric-heating heat-conductive oils) drawing-off 1.5 times, finally by the sizing of one group of seven axle drawing machine (170 DEG C of heating agent electric-heating heat-conductive oils) retraction, produce that thickness is 4dmm, width is the flat filament of 2.3mm, receive silk machine through single ingot and receive silk coiling and molding.Monofilament tensile strength is 420mPa, and elongation at break is 16%, can meet the requirement of producing sunshade net and other flat filament meshi fabrics.
Embodiment 3
(1) pulverize cleaning: waste and old polyester bottle (hereinafter referred to as PET reclaimed materials) is carried out the bottle sheet that cutting and grinding are diameter 12mm-14mm, then wash (water temperature 88 DEG C), dehydration through clear water heat;
(2) prepare burden: take raw material 1500kg (TA9098 halogen-free flame retardants) according to proportioning PET reclaimed materials 98%, Masterbatch 1.5% (polyester G4271), fire retardant 0.5%;
(3) crystallizing and drying: raw material is sent into rolling in crystallizing and drying device (vacuum drum drying machine) and lasting through feeding machine and stirred, crystallization is carried out after 2 hours by heating medium for heating to 180 DEG C, again this temperature inner drying 6 hours, vacuumize continuously with vavuum pump therebetween, make to produce negative pressure in crystallizing and drying device, pressure is 0.95mPa, extracts the flue dust that moisture contained in raw material and impurity produce in pyroprocess, make moisture be reduced to≤0.5 ‰; Raw material long-time roll stir and in drying crystalline process in it strand change;
(4) be incubated: the material that crystallizing and drying is crossed is sent in heat preservation and dryness feed bin, carries out heat preservation and dryness, heat preservation and dryness 6 hours by the continual supply hot blast of air-heater (temperature 180 DEG C);
(5) upper color spinning: the material that above-mentioned heat preservation and dryness is crossed enters plastic extruder, heater via sectional is heated fusing, the impurity in melt is isolated via monomer switch filtering device (filter area is 2 ㎡), melt is sent in V-type manifold by spinning pump high pressure, extrudes that width is 1600mm, thickness is the polyester film of 25dmm through V-type spinning mould;
(6) drafting forming: extrude polyester film through V-type spinning mould, heat through twice hot-rolling, embryophoric membrane is become to swaging, 300 flat filaments are evenly cut into again through cutter, through one group of seven axle drawing machine (90 DEG C of heating agent electric-heating heat-conductive oils) drawing-off 3 times, again through one group of seven axle drawing machine (120 DEG C of heating agent electric-heating heat-conductive oils) drawing-off 1.5 times, finally by the sizing of one group of seven axle drawing machine (170 DEG C of heating agent electric-heating heat-conductive oils) retraction, produce that thickness is 5dmm, width is the flat filament of 3mm, receive silk machine through single ingot and receive silk coiling and molding.Monofilament tensile strength is 500mPa, and elongation at break is 10%, can meet the requirement of producing sunshade net and other flat filament meshi fabrics.
Claims (8)
1. waste polyester bottle chip is used for a method for netting yarn drawing, the steps include:
(1) cleaning is pulverized: waste and old polyester bottle is carried out the bottle sheet that cutting and grinding are diameter 12mm-14mm, then wash through clear water heat, dewater, hot wash water temperature 85 DEG C-90 DEG C;
(2) preparation raw material: the following component comprising weight percent meter, PET reclaimed materials 96 ~ 98%; Masterbatch 1 ~ 3%; Fire retardant 0.5 ~ 2%;
(3) crystallizing and drying: raw material is sent into rolling in crystallizing and drying device and lasting through feeding machine and stirred, crystallization is carried out after 2 hours by heating medium for heating to 140 DEG C-180 DEG C, again at this temperature inner drying 4-6 hour, vacuumize continuously with vavuum pump therebetween, making to produce negative pressure pressure in crystallizing and drying device is 0.8mPa-0.95mPa, extract the flue dust that moisture contained in raw material and impurity produce in pyroprocess, make moisture be reduced to≤0.5 ‰; Raw material long-time roll stir and in drying crystalline process in it strand change;
(4) be incubated: the material that crystallizing and drying is crossed is sent in heat preservation and dryness feed bin, carry out drying by the continual supply hot blast of air-heater and be incubated 4-6 hour;
(5) upper color spinning: the material that above-mentioned heat preservation and dryness is crossed enters plastic extruder, heater via sectional is heated fusing, the impurity in melt is isolated via monomer switch filtering device, melt is sent in V-type manifold by spinning pump high pressure, extrudes that width is 1000-1600mm, thickness is the polyester film of 15-25dmm through V-type spinning mould;
(6) drafting forming: extrude polyester film through V-type spinning mould, heat through twice hot-rolling, embryophoric membrane is become to swaging, 160-300 bar flat filament is evenly cut into again through cutter, hot gas spring 2-3 is added doubly through 90 DEG C of heating agent electric-heating heat-conductive oils through one group of seven axle drawing machine, hot gas spring 1.2-1.5 is added doubly through 120 DEG C of heating agent electric-heating heat-conductive oils again through one group of seven axle drawing machine, finally by one group of seven axle drawing machine and through the sizing of 170 DEG C of heating agent electric-heating heat-conductive oil heating retractions, produce that thickness is 3-5dmm, width is the flat filament of 1.5-3mm, receive silk machine through single ingot and receive silk coiling and molding.
2. a kind of waste polyester bottle chip according to claim 1 is used for the method for netting yarn drawing, and it is characterized in that, in described step 3, crystallizing and drying device is vacuum drum drying machine.
3. a kind of waste polyester bottle chip according to claim 1 is used for the method for netting yarn drawing, it is characterized in that, the temperature 150 DEG C-180 DEG C of hot blast in described step 4.
4. a kind of waste polyester bottle chip according to claim 1 is used for the method for netting yarn drawing, and it is characterized in that, the high pressure in described step 5 is pressure 8-14mpa.
5. a kind of waste polyester bottle chip according to claim 1 is used for the method for netting yarn drawing, it is characterized in that, section of heating in described step 5 is a district 170-175 DEG C, two district 190-195 DEG C, three district 220-240 DEG C, four district 260-270 DEG C, five district 280-290 DEG C, six district 280-290 DEG C.
6. a kind of waste polyester bottle chip according to claim 1 is used for the method for netting yarn drawing, it is characterized in that, in described step 6, hot-rolling heating adopts conduction oil as heating agent, temperature 92 DEG C.
7. a kind of waste polyester bottle chip according to claim 1 is used for the method for netting yarn drawing, it is characterized in that, in described step 5, in described spinning process, monomer switch filtering device is specific as follows, comprise charging aperture, discharging opening, filter A and filter B, it is characterized in that, described filter A and filter B are arranged in parallel, the branch road of its middle filtrator A connects for charging aperture successively, the inlet valve of filter A, filter A, the outlet valve of filter A, discharging opening, the air bleeding valve of filter A is set in the upper end of filter A, the low valve of filter A is set in the lower end of filter A, the branch road of filter B connects inlet valve, filter B, the outlet valve of filter B, discharging opening for charging aperture, filter B successively, arranges the air bleeding valve of filter B in the upper end of filter B, arranges the low valve of filter B in the lower end of filter B.
8. a kind of waste polyester bottle chip according to claim 1 is used for the method for netting yarn drawing, and it is characterized in that, the area of described filter is 1-3.5 ㎡.
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| CN111232753A (en) * | 2020-01-15 | 2020-06-05 | 淮安信息职业技术学院 | Automatic broken fiber recovery device |
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| US11268212B2 (en) | 2020-02-13 | 2022-03-08 | Arun Agarwal | Partially oriented yarn (POY) generation using polyethylene terephthalate (PET) bottle flakes |
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| CN104264287B (en) | 2015-05-20 |
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Denomination of invention: A method of waste polyester bottle sheet for rope net flat wire drawing Effective date of registration: 20220105 Granted publication date: 20150520 Pledgee: Industrial Commercial Bank of China Ltd. Huimin branch Pledgor: SHANDONG BINZOU BOTAO CHEMICAL FIBER Co.,Ltd. Registration number: Y2021980017408 |
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