CN109943909A - A kind of PE/PET figured islands-in-sea fiber and preparation method thereof - Google Patents
A kind of PE/PET figured islands-in-sea fiber and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of PE/PET figured islands-in-sea fiber, sea-island fibre is formed by the island Hai He, and the ingredient in the sea is PE component, and the ingredient on the island is PET component.The invention also discloses the preparation methods of above-mentioned sea-island fibre.Sea-island fibre of the invention is using PET ingredient as island, due to the resistance to most of organic solvents of PET ingredient, when the sea component of sea-island fibre is extracted by organic solvent, the ingredient on island is unaffected, also, the ingredient in sea is extracted by organic solvent, regeneration PE component can be recycled after extraction, can be recycled.With PE slice and PET slice through imitated POY long filament, POY long filament bobbin boundling contain bucket, after spin and process three-steps process route, the island figured islands-in-sea POY long filament Bu Nian can be produced using the compound spinning production line of POY of excess capacity, through boundling, post-processing at figured type staple fiber.Also, the case where two-step process route in compared with the existing technology, island sticks together, is few.
Description
Technical field
The present invention relates to fibre technology fields more particularly to a kind of PE/PET figured islands-in-sea fiber and preparation method thereof.
Background technique
Under the weight that environmental protection policy is administered in blowdown, environmental protection corium not up to standard, synthetic leather enterprise will gradually be shut down.Woven fabric
The all very close corium of its internal structure, appearance tactile impression is removed from office, price only has the 1/4-1/5 of corium, and super fiber leather can solve in corium
The problem of common penetrating odor, formaldehyde, heavy metals exceeding standard, thus quickly grow.It is domestic to use import sea-island fibre in recent years
Downstream product of exploitation such as imitation buckskin, leather base fabric, cleaning cloth for glasses etc. has developed in advance, therefore sea-island fibre has formed exploitation heat
Point.
For determining the relatively indefinite island woven fabric of island woven fabric, more stable performance is had, and color fastness can be many by force.Determine island
The synthetic leather product of superfine fibre production has bigger in various aspects such as feel, artificial leather style, mechanical performance and dyeabilities
Improvement, there is comparable attraction to high-end synthetic leather product is developed, be particluarly suitable for garment industry and developed.Exploitation
PE/PET figured islands-in-sea fiber applications are in the field high to quality requirements
Existing sea-island fibre is usually PE/PA, copet/PA or copet/PET figured sea-island staple fibre, copet
It is alkali soluble polyester, the sea as sea-island fibre is more easily separated.But the more difficult recycling of copet after separation.It is existing
Sea-island fibre usually dyed in a manner of water dye, coloring spinning sea will affect the color grade on island when separating, product color fastness is poor.
The production technology of existing sea-island fibre is the preceding two-step process road for spinning production fabric of island-in-sea type wound packages silk and rear spinning processing
Line, since the spinning hole number of the sea-island fibre is more, there are about the islands of 3-5% to stick together, and influences the quality of product, influences fabric
Feel, mechanical performance and artificial leather degree.
Summary of the invention
It is an object of the invention to propose a kind of PE/PET figured islands-in-sea fiber, have the characteristics that color fastness is high；
Another object of the present invention is to propose a kind of preparation method of PE/PET figured islands-in-sea fiber, there is island not glue
Even the characteristics of.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of PE/PET figured islands-in-sea fiber, sea-island fibre are formed by the island Hai He, extra large ingredient be PE component, island at
It is divided into PET component.
PET material in wider temperature range have excellent physical mechanical property, creep resistance, fatigue durability,
Rub resistance, dimensional stability are all fine.PET has ester bond, resistance to most of organic solvents, good weatherability.PET can be at 55-60 DEG C
It is used for a long time in temperature range, short-period used is resistant to 65 DEG C of high temperature, is resistant to -70 DEG C of low temperature, and to its mechanical performance when high and low temperature
Influence very little.
Due to the resistance to most of organic solvents of PET ingredient, when the sea component of sea-island fibre is extracted by organic solvent, island at
It is point unaffected, also, the ingredient in sea is extracted by organic solvent, be can be recycled after extraction and is regenerated PE component.
It further, include coloring components in PET component.The present invention replaces the prior art in the form of PET original liquid coloring
Sea-island fibre water after super fiber leather product be made dye, sea-island fibre of the invention dyes after super fiber leather product is made without water,
It is environmentally protective.
Further, the filament number of sea-island fibre is 0.04-0.06detx, belongs to superfine fibre, has excellent properties,
Manufactured fabrics feel soft, smooth, drapability is good, plentiful, bulk, good permeability, villus are uniformly and with writing effect.
Further, there is the island 30-40 on the cross section of sea-island fibre.By limiting the quantity on the island of sea-island fibre, so that
Sea-island fibre prevents the adhesion on island during the spinning process.
Further, in sea-island fibre, the weight ratio on the island Hai Yu is 3:7-5:5.By limiting the weight ratio on the island Hai Yu,
In the case that the dosage in guarantee sea is relatively small and guarantee that there is enough anti-sticking distances between each island, if the distance between each island mistake
Greatly, then consumption of organic solvent when extracting sea is excessive, not only causes the waste of organic solvent, also reduces the yield of finished silk；If
The distance between each island is too small, then one sticks together during the spinning process, influences the performance of sea-island fibre.
The preparation method of above-mentioned PE/PET figured islands-in-sea fiber, comprising the following steps:
(1), by PET slice melt extruded become can spinning PET melt, which is transported to manifold and uniform
Distribution is island phase to island composite component spinneret orifice；
(2), by PE slice melt extruded become can spinning PE melt, which to manifold and is evenly distributed
It is marine facies to island composite component spinneret orifice；
(3), PET melt and PE melt are uniformly extruded as spun filament from island composite component spinneret orifice simultaneously；
(4), POY tow is made in spun filament, and POY tow enters fiber barrel by creel and feeding machine, will contain silk later
Tow in bucket successively passes through boundling, oils, heats, drawing-off, curling, sizing, obtains PE/PET figured islands-in-sea fibrous finished product.
In preparation method of the invention, contained with PE slice and PET slice through imitated POY long filament, POY long filament bobbin boundling
Bucket, rear spin process three-steps process route, can produce figured islands-in-sea POY long using the compound spinning production line of POY of excess capacity
The island Si Bunian, through boundling, post-processing at figured type staple fiber.Also, the two-step process route in compared with the existing technology, island
The case where sticking together is few.
Further, in step (4), the drawing temperature of drafting step is 60-85 DEG C, drafting multiple 1.3-1.75,
Draft speed 150-300m/min；Setting temperature is 85-105 DEG C.
Further, in step (4), the process of POY tow is made in spun filament are as follows: spun filament is successively filled through supercooling
It sets, oil, spinning shaft, draw-off godet and up- coiler, rolled machine wind to obtain POY tow, spinning speed 2500-3000m/
min；
Cooling device includes cross air blowing device and changes blowing device, and the wind speed of cross air blasting is 0.5-0.65m/s, side-blown air-cooled
But temperature is 25-28 DEG C, and the relative humidity of side-blown air cooling is 85-90%.
Further, in step (1), the PET dry chip of moisture content < 30ppm is made in PET slice, enters the later
One screw extruder melt extruded become can spinning PET melt, which is transported to spinning manifold after prefilter
In, and it is evenly distributed to by metering pump A the spinneret orifice of island composite component；
The melt extruded process of first screw extruder is equipped with five sections of heating zones, and the heating temperature in each area is 283 DEG C, 285
℃,287℃,289℃,287℃；Condition of spinning manifold temperature is 285 DEG C；
The range of viscosities of PET slice is 0.5-0.75dl/g, and fusing point is 252-260 DEG C.
Further, in step (2), PE slice by the melt extruded of the second screw extruder become can spinning PE
Melt leads to metering pump B by the PE melt conveying into spinning manifold, and is evenly distributed in the composite component spinneret orifice of island；
The melt extruded process of second screw extruder is equipped with five sections of heating zones, and the heating temperature in each area is 200 DEG C, 210
℃,220℃,225℃,230℃；
The melt index range of PE slice is 48.0-60dl/g, and melting range is 105-125 DEG C.
The invention has the benefit that
Sea-island fibre of the invention, due to the resistance to most of organic solvents of PET ingredient, works as sea-island fibre using PET ingredient as island
Sea component when being extracted by organic solvent, the ingredient on island is unaffected, also, the ingredient in sea is extracted by organic solvent, extraction
Regeneration PE component can be recycled afterwards, can be recycled.
In preparation method of the invention, contained with PE slice and PET slice through spinning POY long filament, POY long filament bobbin boundling
Bucket, rear spin process three-steps process route, can produce figured islands-in-sea POY long using the compound spinning production line of POY of excess capacity
The island Si Bunian, through boundling, post-processing at figured type staple fiber.Also, the two-step process route in compared with the existing technology, island
The case where sticking together is few.
Specific embodiment
Technical solution of the present invention is further illustrated below with reference to attached specific embodiment.
A kind of PE/PET figured islands-in-sea fiber, sea-island fibre are formed by the island Hai He, extra large ingredient be PE component, island at
It is divided into PET component.
PET material in wider temperature range have excellent physical mechanical property, creep resistance, fatigue durability,
Rub resistance, dimensional stability are all fine.PET has ester bond, resistance to most of organic solvents, good weatherability.PET can be at 55-60 DEG C
It is used for a long time in temperature range, short-period used is resistant to 65 DEG C of high temperature, is resistant to -70 DEG C of low temperature, and to its mechanical performance when high and low temperature
Influence very little.
Due to the resistance to most of organic solvents of PET ingredient, when the sea component of sea-island fibre is extracted by organic solvent, island at
It is point unaffected, also, the ingredient in sea is extracted by organic solvent, be can be recycled after extraction and is regenerated PE component.
It further, include coloring components in PET component.The present invention replaces the prior art in the form of PET original liquid coloring
Sea-island fibre water after super fiber leather product be made dye, sea-island fibre of the invention dyes after super fiber leather product is made without water,
It is environmentally protective.
Further, the filament number of sea-island fibre is 0.04-0.06detx, belongs to superfine fibre, has excellent properties,
Manufactured fabrics feel soft, smooth, drapability is good, plentiful, bulk, good permeability, villus are uniformly and with writing effect.
Further, there is the island 30-40 on the cross section of sea-island fibre.By limiting the quantity on the island of sea-island fibre, so that
Sea-island fibre prevents the adhesion on island during the spinning process.
Further, in sea-island fibre, the weight ratio on the island Hai Yu is 3:7-5:5.By limiting the weight ratio on the island Hai Yu,
In the case that the dosage in guarantee sea is relatively small and guarantee that there is enough anti-sticking distances between each island, if the distance between each island mistake
Greatly, then consumption of organic solvent when extracting sea is excessive, not only causes the waste of organic solvent, also reduces the yield of finished silk；If
The distance between each island is too small, then one sticks together during the spinning process, influences the performance of sea-island fibre.
The preparation method of above-mentioned PE/PET figured islands-in-sea fiber, comprising the following steps:
(1), by PET slice melt extruded become can spinning PET melt, which is transported to manifold and uniform
Distribution is island phase to island composite component spinneret orifice；
(2), by PE slice melt extruded become can spinning PE melt, which to manifold and is evenly distributed
It is marine facies to island composite component spinneret orifice；
(3), PET melt and PE melt are uniformly extruded as spun filament from island composite component spinneret orifice simultaneously；
(4), POY tow is made in spun filament, and POY tow enters fiber barrel by creel and feeding machine, will contain silk later
Bucket in tow successively pass through boundling, oil, heat, drawing-off, curling, sizing, cutting, obtain PE/PET figured islands-in-sea fiber at
Product.
In preparation method of the invention, contained with PE slice and PET slice through imitated POY long filament, POY long filament bobbin boundling
Bucket, rear spin process three-steps process route, can produce figured islands-in-sea POY long using the compound spinning production line of POY of excess capacity
The island Si Bunian, through boundling, post-processing at figured type staple fiber.Also, the two-step process route in compared with the existing technology, island
The case where sticking together is few.
The spinning manifold of sea-island fibre has 6 or 8 spinning parts, and each spinning part has 8,10 or 12 spinning groups
Part, cabinet can guarantee that each position melt quality is identical.Melt enters cabinet, passes through the pipeline of 6 same diameters and length point
Not Tong Guo respective transmission device and metering pump quantitatively input composite spining module.Each composite spining module has one piece of spinneret
Plate, there are about 48 holes, every 37 islands Kong You for every block of spinneret.
Further, in step (4), the drawing temperature of drafting step is 60-85 DEG C, drafting multiple 1.3-1.75,
Draft speed 150-300m/min；Setting temperature is 85-105 DEG C.By limiting drawing-off parameter and setting temperature, so that fiber is stretched
It is straight parallel, guarantee the uniformity of drawing of fiber.
Further, in step (4), the process of POY tow is made in spun filament are as follows: spun filament is successively filled through supercooling
It sets, oil, spinning shaft, draw-off godet and up- coiler, rolled machine wind to obtain POY tow, spinning speed 2500-3000m/
min；
Cooling device includes cross air blowing device and changes blowing device, and the wind speed of cross air blasting is 0.5-0.65m/s, and circular blow is air-cooled
But temperature is 25-28 DEG C, and the relative humidity of side-blown air cooling is 85-90%.
Further, in step (1), the PET dry chip of moisture content < 30ppm is made in PET slice, enters the later
One screw extruder melt extruded become can spinning PET melt, which is transported to spinning manifold after prefilter
In, and it is evenly distributed to by metering pump A the spinneret orifice of island composite component；
The melt extruded process of first screw extruder is equipped with five sections of heating zones, and the heating temperature in each area is 283 DEG C, 285
℃,287℃,289℃,287℃；Condition of spinning manifold temperature is 285 DEG C；
The range of viscosities of PET slice is 0.5-0.75dl/g, and fusing point is 252-260 DEG C.
Further, in step (2), PE slice by the melt extruded of the second screw extruder become can spinning PE
Melt leads to metering pump B by the PE melt conveying into spinning manifold, and is evenly distributed in the composite component spinneret orifice of island；
The melt extruded process of second screw extruder is equipped with five sections of heating zones, and the heating temperature in each area is 200 DEG C, 210
℃,220℃,225℃,230℃；
The melt index range of PE slice is 48.0-60dl/g, and melting range is 105-125 DEG C.
The present invention is further explained by the following examples.
Embodiment 1
The PE/PET figured islands-in-sea fiber of the present embodiment is formed by the island Hai He, extra large ingredient be PE component, state island at
It is divided into PET component；It include coloring components in PET component；The filament number of sea-island fibre is 0.04detx；Sea-island fibre it is transversal
37 island face Shang You；In sea-island fibre, the weight ratio on the island Hai Yu is 3:7.
The preparation method of above-mentioned PE/PET figured islands-in-sea fiber, comprising the following steps:
Step (1), the PET dry chip that PET slice is made to moisture content < 30ppm, enter the first screw extruder later
Melt extruded become can spinning PET melt, which is transported in spinning manifold after prefilter, and passes through metering
Pump A is evenly distributed to the spinneret orifice of island composite component, is island phase；
The melt extruded process of first screw extruder is equipped with five sections of heating zones, and the heating temperature in each area is 283 DEG C, 285
℃,287℃,289℃,287℃；Condition of spinning manifold temperature is 285 DEG C；
The range of viscosities of PET slice is 0.5-0.75dl/g, and fusing point is 252-260 DEG C.
Step (2), PE slice by the melt extruded of the second screw extruder become can spinning PE melt, lead to metering pump
The PE melt conveying into spinning manifold, and is evenly distributed in the composite component spinneret orifice of island by B, is marine facies；
The melt extruded process of second screw extruder is equipped with five sections of heating zones, and the heating temperature in each area is 200 DEG C, 210
℃,220℃,225℃,230℃；
The melt index range of PE slice is 48.0-60dl/g, and melting range is 105-125 DEG C.
Step (3), PET melt and PE melt are uniformly extruded as spun filament from island composite component spinneret orifice simultaneously；
POY tow is made in step (4), spun filament, and POY tow enters fiber barrel by creel and feeding machine, later will
Tow in fiber barrel successively passes through boundling, oils, heats, drawing-off, curling, sizing, obtain PE/PET figured islands-in-sea fiber at
Product.
In step (4), the drawing temperature of drafting step is 85 DEG C, drafting multiple 1.5, draft speed 150m/min；
Setting temperature is 95 DEG C.The process of POY tow is made in spun filament are as follows: spun filament successively through apparatus for supercooling, oil, spinning river in Zhejiang Province
Road, draw-off godet and up- coiler, rolled machine wind to obtain POY tow, spinning speed 2900-3000m/min；Cooling device includes
Cross air blowing device and change blowing device, the wind speed of cross air blasting is 0.5-0.65m/s, and the temperature of ring wind quenching is 25-28 DEG C, side
The relative humidity of quenching is 85-90%.
Embodiment 2
The PE/PET figured islands-in-sea fiber of the present embodiment and preparation method thereof substantially the same manner as Example 1, difference
It is:
The filament number of sea-island fibre is 0.06detx, 37 island cross section Shang You of sea-island fibre, in sea-island fibre, sea with
The weight ratio on island is 7:13；
The preparation method the step of in (4), the drawing temperature of drafting step is 60-70 DEG C, drafting multiple 1.75, drawing-off
Speed 300m/min；Setting temperature is 105 DEG C.The spinning speed that POY tow is made in spun filament is 2700-2800m/min.
Embodiment 3
The PE/PET figured islands-in-sea fiber of the present embodiment and preparation method thereof substantially the same manner as Example 1, difference
It is:
The filament number of sea-island fibre is 0.05detx, 37 island cross section Shang You of sea-island fibre, in sea-island fibre, sea with
The weight ratio on island is 4:6；
The preparation method the step of in (4), the drawing temperature of drafting step is 70-75 DEG C, drafting multiple 1.6, drawing-off
Speed 200m/min；Setting temperature is 100 DEG C.The spinning speed that POY tow is made in spun filament is 2850-2950m/min.
Embodiment 4
The PE/PET figured islands-in-sea fiber of the present embodiment and preparation method thereof substantially the same manner as Example 1, difference
It is:
The filament number of sea-island fibre is 0.05detx, 37 island cross section Shang You of sea-island fibre, in sea-island fibre, sea with
The weight ratio on island is 9:11；
The preparation method the step of in (4), the drawing temperature of drafting step is 75 DEG C, drafting multiple 1.7, draft speed
250m/min；Setting temperature is 90 DEG C.The spinning speed that POY tow is made in spun filament is 3000m/min.
Embodiment 5
The PE/PET figured islands-in-sea fiber of the present embodiment and preparation method thereof substantially the same manner as Example 1, difference
It is:
The filament number of sea-island fibre is 0.05detx, 37 island cross section Shang You of sea-island fibre, in sea-island fibre, sea with
The weight ratio on island is 5:5；
The preparation method the step of in (4), the drawing temperature of drafting step is 65 DEG C, drafting multiple 1.3, draft speed
300m/min；Setting temperature is 85 DEG C.The spinning speed that POY tow is made in spun filament is 2500m/min.
The PE/PET figured islands-in-sea fiber of embodiment 1-5 is tested for the property, test result is as follows shown in table.
| Example | Breaking strength | Elongation at break | Yarn unevenness CV value | The fibre density of single fiber |
| Embodiment 1 | ≥3.5CN/dtex | 45-55% | < 0.8% | 1.00g/cm3 |
| Embodiment 2 | ≥3.5CN/dtex | 45-55% | < 0.8% | 0.96g/cm3 |
| Embodiment 3 | ≥3.5CN/dtex | 45-55% | < 0.8% | 0.92g/cm3 |
| Embodiment 4 | ≥3.5CN/dtex | 45-55% | < 0.8% | 0.85g/cm3 |
| Embodiment 5 | ≥3.5CN/dtex | 45-55% | < 0.8% | 1.02g/cm3 |
As seen from the above table, the better performances of the sea-island fibre of embodiment 1-5.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of PE/PET figured islands-in-sea fiber, which is characterized in that the sea-island fibre is formed by the island Hai He, it is described sea at
It is divided into PE component, the ingredient on the island is PET component.
2. PE/PET figured islands-in-sea fiber according to claim 1, which is characterized in that include in the PET component
Color ingredient.
3. PE/PET figured islands-in-sea fiber according to claim 1, which is characterized in that the monofilament of the sea-island fibre is fine
Degree is 0.04-0.06detx.
4. PE/PET figured islands-in-sea fiber according to claim 1, which is characterized in that the cross section of the sea-island fibre
On have the island 30-40.
5. PE/PET figured islands-in-sea fiber according to claim 1, which is characterized in that in the sea-island fibre, sea with
The weight ratio on island is 3:7-5:5.
6. the preparation method of any one of the claim 1-5 PE/PET figured islands-in-sea fiber, which is characterized in that including following
Step:
(1), by PET slice melt extruded become can spinning PET melt, which is transported to manifold and is evenly distributed
It is island phase to island composite component spinneret orifice；
(2), by PE slice melt extruded become can spinning PE melt, by the PE melt conveying to manifold and evenly distribute to institute
Island composite component spinneret orifice is stated, is marine facies；
(3), PET melt and PE melt are uniformly extruded as spun filament from the island composite component spinneret orifice simultaneously；
(4), POY tow is made in the spun filament, and the POY tow enters fiber barrel by creel and feeding machine, later will
Tow in the fiber barrel successively passes through boundling, oils, heats, drawing-off, curling, sizing, cutting, obtains PE/PET figured type sea
Island fibrous finished product.
7. preparation method according to claim 6, which is characterized in that in the step (4), the drafting step is led
Stretching temperature is 60-85 DEG C, drafting multiple 1.3-1.75, draft speed 150-300m/min；Setting temperature is 85-105 DEG C.
8. preparation method according to claim 6, which is characterized in that in the step (4), the spun filament is made
The process of POY tow are as follows: the spun filament successively through apparatus for supercooling, oil, spinning shaft, draw-off godet and up- coiler, through rolling up
POY tow, spinning speed 2500-3000m/min are wound to obtain around machine；
The cooling device includes cross air blowing device, and the wind speed of cross air blasting is 0.5-0.65m/s, and the temperature of side-blown air cooling is
25-28 DEG C, the relative humidity of side-blown air cooling is 85-90%.
9. preparation method according to claim 6, which is characterized in that in the step (1), the PET is sliced and is made
At the PET dry chip of moisture content < 30ppm, later enter the first screw extruder melt extruded become can spinning PET melt, should
PET melt is transported in spinning manifold after prefilter, and is evenly distributed to the island composite component by metering pump A
Spinneret orifice；
The melt extruded process of first screw extruder is equipped with five sections of heating zones, and the heating temperature in each area is 283 DEG C, 285
℃,287℃,289℃,287℃；Condition of spinning manifold temperature is 285 DEG C；
The range of viscosities of the PET slice is 0.5-0.75dl/g, and fusing point is 252-260 DEG C.
10. preparation method according to claim 6, which is characterized in that in the step (2), the PE slice passes through
The melt extruded of second screw extruder become can spinning PE melt, lead to metering pump B for the PE melt conveying to spinning manifold
In, and be evenly distributed in the island composite component spinneret orifice；
The melt extruded process of second screw extruder is equipped with five sections of heating zones, and the heating temperature in each area is 200 DEG C, 210
℃,220℃,225℃,230℃；
The melt index range of the PE slice is 48.0-60dl/g, and melting range is 105-125 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074376A (en) * | 2019-12-23 | 2020-04-28 | 江苏华峰超纤材料有限公司 | High-crimp sea-island synthetic fiber and preparation method thereof |
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