CN102787377A - Manufacturing method of safe airbag polyester industrial yarn - Google Patents
Manufacturing method of safe airbag polyester industrial yarn Download PDFInfo
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- CN102787377A CN102787377A CN2012103211503A CN201210321150A CN102787377A CN 102787377 A CN102787377 A CN 102787377A CN 2012103211503 A CN2012103211503 A CN 2012103211503A CN 201210321150 A CN201210321150 A CN 201210321150A CN 102787377 A CN102787377 A CN 102787377A
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Abstract
The invention relates to a manufacturing method of safe airbag polyester industrial yarn. The mehtod is characterized in that the safe airbag polyester industrial yarn is manufactured by selection and control of cooling conditions; the process is as follows: highly viscous molten polyester raw materials, measurement, spinning, cooling, oiling, stretching, thermal setting and rolling for shaping. In order to reduce non-uniformity of the fiber and ensure safety of an airbag made from the polyester industrial yarn, according to the invention, a pre-cooling device is a hollow ladder ring belt consisting of upper and lower parts, on which through holes with diameter of 5-10mm are evenly distributed; and the distribution density of holes on the upper part is at least 1.5 times higher than that of holes on the lower part. The physical indexes of the obtained polyester industrial yarn are as follows: the breaking strength CV value is less than or equal to 2.5%, the breaking elongation CV value is less than or equal to 7.0%, the denier of mono-filament is 2-6dtex, and the dry-heat shrinkage is 3.5+/-0.5% under the test conditions of 177 DEG C and 0.05 cN/dtex.
Description
Technical field
The present invention relates to a kind of production method of polyester industrial yarn, especially relate to a kind of manufacturing approach of air bag polyester industrial yarn, belong to polyester industrial yarn and make the field.
Background technology
Terylene is a most important kind in the chemical fibre, and its function admirable is widely used, and not only in the clothes materials, accounts for critical role, and aspect the industry articles for use, also demonstrates great vitality.Polyester industrial yarn is owing to have the intensity height, and modulus is big, extend little, heat-resisting, shock-resistant, advantage such as fatigue performance is good, and be widely used in tire cord, safety belt, air bag, conveyer belt, high-pressure resin reinforcing material.
Safe automobile air bag is widely used on automobile at present; In order to make automobile can when sharp impacts takes place, play protection personnel's safety by bus effectively; Air bag must have good physical and mechanical properties; Desired strength height, light weight, good frictional behaviour, good springiness, suitable hot property, high chemical stability, ageing resistance, folding volume are little, fabric sofetening, fill rapidly at air bag and to be difficult for scratch personnel by bus when rising.Since the air bag invention, Tynex occupies the market share of the overwhelming majority always.But along with the development of gas cell fabric finishing technique, polyester industrial yarn is because cost is low, intensity is high, chemical resistance is good etc. advantage and be used to the processing of gas cell fabric gradually.As the polyester industrial yarn that air bag is used, multiselect is used fine denier filament, can reduce the air bag quality, makes it to be easy to folding the installation.Desired strength is high simultaneously, elongation is big.
In the melt spinning process of polyester industrial yarn; The melt thread of from spinnerets, extruding; Through cooling air cooling solidified forming; Form the preliminary aggregated structure of fiber, the quality of shaping can directly influence the spinnability of fiber and the quality of finished product, and it all has considerable influence to the degree of orientation of fiber, diameter irregularity, degree of crystallinity, tensile property, mechanical property etc.Usually used PET melt, it is that the melt thread is gone out behind the spinnerets by quenching, cooldown rate is high; The tension force of spinneret draft is big, and the pre-orientation degree of fiber is big, thereby the core-skin phenomenon appears in fiber; Make that single tow cooling uniformity is not good; The coefficient of variation of fiber (CV value) is bigger than normal, is unfavorable for the raising of drafting multiple, is difficult to obtain high-intensity fiber.Therefore in polyester industrial yarn was produced, the selection of cooling condition and control were the significant effects factors in the polyester industrial yarn forming process.
In order to have obtained the superperformance polyester industrial yarn, under spinnerets, add a kind of annealing device of heating usually, tow is cooled off lentamente, install the zone of silence device simultaneously additional, increase the buffer area of tow, cool off tow more equably.But along with the adding of annealing device and zone of silence, the blowing position of side-blown moves down, and the solidification point of as-spun fibre and then moves down; Tow shake aggravation causes being easy to generate unsettled air-flow, has aggravated the shake of tow; It is unstable to make that melt goes out behind the spinnerets, and spinning technique is under some influence, and near the time of staying of as-spun fibre crystal region is longer simultaneously; Thereby cause as-spun fibre degree of crystallinity excessive, can cause lousiness and broken end, decrease in yield in the production.And cooling control preferably makes fiber have the suitable degree of orientation and degree of crystallinity, makes resultant articles have fracture strength height, elastic modelling quantity is high, the line density deviation ratio is low characteristics.
In the prior art, the manufacturing approach of the described polyester industrial fiber for processing safe air bag of automobile of patent CN101634052B though can substitute nylon 66 fiber, reduces production costs, and its stretching and heat setting process are complicated.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, a kind of manufacturing approach of air bag polyester industrial yarn is provided.The selection of cooling condition and control are most important influence factors in the polyester industrial yarn forming process; In the melt spinning process; The melt thread of from spinnerets, extruding through cooling air cooling solidified forming, forms the preliminary aggregated structure of fiber; The quality that is shaped directly influences the spinnability of fiber and the quality of finished product, and the degree of orientation of fiber, diameter irregularity, degree of crystallinity, tensile property, mechanical property etc. are all had considerable influence.The present invention provides a kind of manufacturing approach of air bag polyester industrial yarn through the selection and the control of cooling condition.
The manufacturing approach of a kind of air bag polyester industrial yarn of the present invention, its technological process is high sticking fusion polyester raw material, and------------oiling,---the spray silk stretches---HEAT SETTING---winding shaping in cooling in metering; The terylene chips that is adopted is the sticking section of height that obtains through solid-phase tack producing, and its inherent viscosity is 1.0～1.2dl/g, because its molecular weight distribution is narrow more, number-average molecular weight is high more, and the resulting fibre strength in back that stretches is high more.Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively; Reduce the orientation and the crystallization of as-spun fibre to greatest extent, improve after-drawing as far as possible than being the basis of making the air bag polyester industrial yarn.Spinning speed and cooling condition are the principal elements that influences the as-spun fibre orientation, and crystallization then mainly receives the influence of the type of cooling and technology; When melt was extruded from spinnerets, the temperature of melt was very high, a little less than thread is highly brittle, was unable to undergo the impact of any air-flow, and simultaneously, too fast cooling can cause fiber, and radially the skin-core structure and the curling big molecule of generation of cross section increase.For orientation and the crystallization of controlling as-spun fibre, in the production of industry silk, annealer (a kind of ring-type heater) is set, to guarantee even, the slowly cooling of as-spun fibre; Annealer is pre-cooler down; Pre-cooler is a kind of passive outer shroud precooling; Described precooling is the tow to the as-spun fibre that is in molten condition; Passive outer shroud precooling is meant air spontaneous current loop device and then strand cooled off outside passive, and passive outer loop device is the hollow out endless belt, and precooling is played important effect to the irregularity that reduces fiber; Pre-cooler is no wind apparatus down; No wind apparatus is a kind of ring type structure; Its effect is a calm zone that impales around forming, and the zone of silence cooling is between precooling and blowing cooling, and zone of silence moves down the quench region of tow; Increase the buffer area of tow, can make the cooling of tow more even.Adjust as-spun fibre in the temperature of spinning on the journey through the technology of cooling condition,, obtain high-quality fiber, finally obtain the high polyester industrial yarn of safety coefficient to reach the orientation that reduces as-spun fibre and the purpose of crystallization.
Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively;
Described slow cooling is meant that the tow ambient temperature is 260～300 ℃, and slow cooling district exit strand temperature is 280～285 ℃.
Described precooling is the precooling of passive outer shroud ladder; The precooling of described passive outer shroud ladder is meant that the air spontaneous current cools off through passive outer shroud stepwise device and then to strand; Described passive outer shroud stepwise device is hollow out ladder endless belt, and described hollow out ladder endless belt is made up of two parts up and down; The ratio of wind area excessively on the top of described hollow out ladder endless belt is 40～60%; Highly be 20～40mm, the described wind area of crossing is than the ratio of the area that is meant air flow openwork part through top, said hollow out ladder endless belt with the area of the windward side on the top of described hollow out ladder endless belt; The ratio of wind area excessively of the lower part of described hollow out ladder endless belt is 20～30%, highly is 20～40mm; The described wind area of crossing is than the ratio of the area that is meant air flow openwork part through lower part, said hollow out ladder endless belt with the area of the windward side of the lower part of described hollow out ladder endless belt;
Described precooling is meant that the tow ambient temperature is 160～260 ℃, and pre-cooling zone exit strand temperature is 250～260 ℃.
Described zone of silence cooling is meant that the tow ambient temperature is 100～160 ℃, and zone of silence exit strand temperature is 220～230 ℃.
The wind-warm syndrome of described blowing cooling is 15～30 ℃;
The physical index of resulting air bag polyester industrial yarn: line density deviation ratio≤1.5%; Fracture strength>=7.0cN/dtex; Fracture strength CV value≤2.5%; Extension at break is 22.0 ± 2.0%, extension at break CV value≤7.0%, and the dry-hot shrinkage under 177 ℃, the test condition of 0.05cN/dtex is 3.5 ± 0.5%.
What often the industry silk was stressed is fracture strength and extension at break, and ignores the control to the line density deviation ratio, and the line density irregularity is irregular to intensity, the irregular influence of elongation is very big, and the principal element that influences the line density deviation ratio of cooling condition.
As optimized technical scheme:
The described slow cooling of the manufacturing approach of aforesaid a kind of air bag polyester industrial yarn highly is 250～300mm.
The manufacturing approach of aforesaid a kind of air bag polyester industrial yarn, described zone of silence cooling highly is 200～300mm.
Height through control slow cooling, precooling, zone of silence guarantees the time of staying of tow, reaches temperature that reduces tow and the purpose that reduces the tow temperature difference radially, to obtain the air bag polyester industrial yarn.
The manufacturing approach of aforesaid a kind of air bag polyester industrial yarn; The through hole that the top of described hollow out ladder endless belt and lower part all are uniformly distributed with diameter 5～10mm; The cloth hole density on the top of described hollow out ladder endless belt is at least 1.5 times of cloth hole density of the lower part of described hollow out ladder endless belt, and described cloth hole density is meant the cloth hole number on the unit are.Pre-cooling zone adopts the hollow out endless belt, and to select certain altitude for use mainly be in order to reduce air flow through the disturbance to tow, to play the effect that reduces strand temperature simultaneously again with crossing the wind area.
The manufacturing approach of aforesaid a kind of air bag polyester industrial yarn, described zone of silence cooling is between precooling and blowing cooling, and zone of silence is meant a calm zone that impales all around.
The manufacturing approach of aforesaid a kind of air bag polyester industrial yarn, described blowing are cooled to the lateral blowing cooling, and its technology is that the temperature of lateral blowing is 15～30 ℃, and humidity is 60～80%, and wind speed is 0.2～0.8m/s.
The manufacturing approach of aforesaid a kind of air bag polyester industrial yarn, air bag polyester industrial yarn filament number 2～6dtex that described method makes.
The basic principle of the manufacturing approach of a kind of air bag polyester industrial yarn of the present invention is:
After the melt thread leaves spinnerets, be cooled immediately, the tensile stress that spinnerets is stretched rises rapidly, will improve the molecular preorientation degree significantly, and fiber radially produces the birefringence gradient.Therefore, obtain the superperformance polyester industrial yarn, must make the internal stress of strand when solidifying low especially, thereby the molecular preorientation degree is reduced.Through under spinnerets, adding a kind of annealing device of heating, the melt thread is gone out behind the spinnerets not by quenching, but cooling lentamente just make cooldown rate reduce; Prolong the melt district, solidification point is moved down, thereby reduced the tension force of spinneret draft; The pre-orientation degree of fiber is reduced, can play the slow cooling effect and reduce the core-skin phenomenon, improve single tow cooling uniformity; Be beneficial to drafting multiple and improve, can obtain the fiber of high-tenacity, thereby improve the safety coefficient of finished product.Annealing device guarantees that air has sufficiently high temperature in this zone, with the decrease speed of control strand temperature, improves the tensile property of fiber.
Tow gets into cooled region through the slow cooling district, the tow at the blast points place of the top is still a kind of inhomogeneous state of cooling cold outside and hot inside.So increase zone of silence; Can further reduce the transversal temperature difference of tow; The birefringence that has reduced the strand surface that causes because of quenching and strand inner core is poor, alleviates therefore and the core-skin layer fibre structure of formation moves down the quench region of tow; Increase the buffer area of tow, can make the cooling of tow more even.
Along with the adding of annealing device and zone of silence, the blowing position of side-blown moves down, and the solidification point of fiber and then moves down.But because the fiber number of industry silk is bigger; Its specific area is less, and as-spun fibre is difficult for heat radiation, and cooldown rate is slack-off; Fiber is at the overstand of 180～200 ℃ of crystal regions; Thereby cause as-spun fibre degree of crystallinity excessive, form the concentration of local of tensile stress, can cause lousiness and broken end in the production.Simultaneously, because the solidification point of fiber and then moves down, tow shake aggravation causes this section to be easy to generate unsettled air-flow, has aggravated the shake of tow, and it is extremely unstable to make that melt goes out behind the spinnerets, is easy to generate the head silk, and spinning technique is under some influence.
Between annealing device and zone of silence, introduce pre-cooler; It at first is the position that has guaranteed the solidification point of as-spun fibre; The solidification point that has reduced fiber moves down the tow that is produced and shakes the irregularity that brings; Next is to control effectively and reduced near the time of staying of fiber 180～200 ℃, thereby has avoided the excessive institute of as-spun fibre degree of crystallinity to cause stretching irregular, and what guarantee to stretch carries out and the security of finished product smoothly.
Beneficial effect:
1, through the introducing of pre-cooler, the solidification point that has reduced fiber moves down the tow that is produced and shakes the irregularity that brings, and the line density deviation ratio is controlled in the lower scope.
2, the introducing through pre-cooler finally obtains high-quality fiber to reach the orientation that reduces as-spun fibre and the purpose of crystallization.
3, the introducing of pre-cooler produces beneficial effect to the stretching of fiber, has improved the modulus and the safety of products coefficient of prepared fiber.
4, utilize the air bag polyester industrial yarn of the inventive method manufacturing to have fracture strength height, low, the dry-hot shrinkage advantage of reasonable of line density deviation ratio, can satisfy the needs of using well.
The specific embodiment
Below in conjunction with the specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
A kind of manufacturing approach of air bag polyester industrial yarn, its technological process is high sticking fusion polyester raw material---metering---the spray silk---cooling---oil------HEAT SETTING---winding shaping that stretches, wherein:
The sticking fusion polyester raw material of described height is meant that inherent viscosity is the sticking section of height of 1.1dl/g.
Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively;
Described slow cooling is meant that the tow ambient temperature is 260 ℃, and slow cooling district exit strand temperature is 280 ℃; Slow cooling highly is 250mm.
Described precooling is meant that the tow ambient temperature is 160 ℃, and pre-cooling zone exit strand temperature is 250 ℃; Described precooling highly is 40mm.
Described zone of silence cooling is meant that the tow ambient temperature is 100 ℃, and zone of silence exit strand temperature is 220 ℃; Described zone of silence cooling highly is 200mm.
The wind-warm syndrome of described blowing cooling is 15 ℃; Described blowing is cooled to the lateral blowing cooling, and its technology is that the temperature of lateral blowing is 15 ℃, and humidity is 60%, and wind speed is 0.2m/s.
Described four rollers that are stretched as stretch, and the temperature of first roller is 22 ℃, and speed is 1851m/min; The temperature of second roller is 69 ℃, and speed is 2251m/min, and the temperature of the 3rd roller is 191 ℃; Speed is 3645m/min; The 4th roll temperature is 147 ℃, and speed is 3038m/min, and the speed of the 5th roller is 2803m/min.Described heat setting temperature is the temperature of the 4th roller, and described winding speed is 2803m/min.
The air bag polyester industrial yarn filament number 5dtex that described method makes.The physical index of resulting air bag polyester industrial yarn: line density deviation ratio 0.09%; Fracture strength 7.0cN/dtex, fracture strength CV value 0.6%, extension at break is 20.0%; Extension at break CV value 1.2%, the dry-hot shrinkage under 177 ℃, the test condition of 0.05cN/dtex is 3.0%.
Embodiment 2
A kind of manufacturing approach of air bag polyester industrial yarn, its technological process is high sticking fusion polyester raw material---metering---the spray silk---cooling---oil------HEAT SETTING---winding shaping that stretches, wherein:
The sticking fusion polyester raw material of described height is meant that inherent viscosity is the sticking section of height of 1.05dl/g.
Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively;
Described slow cooling is meant that the tow ambient temperature is 300 ℃, and slow cooling district exit strand temperature is 285 ℃; Slow cooling highly is 300mm.
Described precooling is meant that the tow ambient temperature is 260 ℃, and pre-cooling zone exit strand temperature is 260 ℃; Described precooling highly is 80mm.
Described zone of silence cooling is meant that the tow ambient temperature is 160 ℃, and zone of silence exit strand temperature is 230 ℃; Described zone of silence cooling highly is 300mm.
The wind-warm syndrome of described blowing cooling is 30 ℃; Described blowing is cooled to the lateral blowing cooling, and its technology is that the temperature of lateral blowing is 30 ℃, and humidity is 80%, and wind speed is 0.8m/s.
Described four rollers that are stretched as stretch, and the temperature of first roller is 18 ℃, and speed is 1832m/min; The temperature of second roller is 67 ℃, and speed is 2274m/min, and the temperature of the 3rd roller is 216 ℃; Speed is 3928m/min; The 4th roll temperature is 177 ℃, and speed is 3406m/min, and the speed of the 5th roller is 2939m/min.Described heat setting temperature is the temperature of the 4th roller, and described winding speed is 2939m/min.
The air bag polyester industrial yarn filament number 10dtex that described method makes.The physical index of resulting air bag polyester industrial yarn: line density deviation ratio 1.5%; Fracture strength 7.85cN/dtex, fracture strength CV value 2.5%, extension at break is 24.0%; Extension at break CV value 7.0%, the dry-hot shrinkage under 177 ℃, the test condition of 0.05cN/dtex is 4.0%.
Embodiment 3
A kind of manufacturing approach of air bag polyester industrial yarn, its technological process is high sticking fusion polyester raw material---metering---the spray silk---cooling---oil------HEAT SETTING---winding shaping that stretches, wherein:
The sticking fusion polyester raw material of described height is meant that inherent viscosity is the sticking section of height of 1.02dl/g.
Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively;
Described slow cooling is meant that the tow ambient temperature is 280 ℃, and slow cooling district exit strand temperature is 282 ℃; Slow cooling highly is 275mm.
Described precooling is meant that the tow ambient temperature is 210 ℃, and pre-cooling zone exit strand temperature is 255 ℃; Described precooling highly is 60mm.
Described zone of silence cooling is meant that the tow ambient temperature is 130 ℃, and zone of silence exit strand temperature is 225 ℃; Described zone of silence cooling highly is 250mm.
The wind-warm syndrome of described blowing cooling is 23 ℃; Described blowing is cooled to the lateral blowing cooling, and its technology is that the temperature of lateral blowing is 23 ℃, and humidity is 70%, and wind speed is 0.5m/s.
Described four rollers that are stretched as stretch, and the temperature of first roller is 23 ℃, and speed is 1912m/min; The temperature of second roller is 69 ℃, and speed is 2257m/min, and the temperature of the 3rd roller is 200 ℃; Speed is 3379m/min; The 4th roll temperature is 154 ℃, and speed is 3236m/min, and the speed of the 5th roller is 2875m/min.Described heat setting temperature is the temperature of the 4th roller, and described winding speed is 2875m/min.
The air bag polyester industrial yarn filament number 8dtex that described method makes.The physical index of resulting air bag polyester industrial yarn: line density deviation ratio 1.1%; Fracture strength 7.5cN/dtex, fracture strength CV value 1.7%, extension at break is 23.0%; Extension at break CV value 5.2%, the dry-hot shrinkage under 177 ℃, the test condition of 0.05cN/dtex is 3.7%.
Embodiment 4
A kind of preparation method of air bag polyester industrial yarn, its technological process is high sticking fusion polyester raw material---metering---the spray silk---cooling---oil------HEAT SETTING---winding shaping that stretches, wherein:
The sticking fusion polyester raw material of described height is meant that inherent viscosity is the sticking section of height of 1.12dl/g.
Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively;
Described slow cooling is meant that the tow ambient temperature is 260 ℃, and slow cooling district exit strand temperature is 280 ℃; Slow cooling highly is 250mm.
Described precooling is meant that the tow ambient temperature is 160 ℃, and pre-cooling zone exit strand temperature is 250 ℃.Described precooling is passive outer shroud precooling; Described passive outer shroud precooling is meant air spontaneous current loop device and then strand cooled off outside passive.Described passive outer shroud stepwise device is hollow out ladder endless belt, and described hollow out ladder endless belt is made up of two parts up and down; The ratio of wind area excessively on the top of described hollow out ladder endless belt is 40%; Highly be 20mm, the described wind area of crossing is than the ratio of the area that is meant air flow openwork part through top, said hollow out ladder endless belt with the area of the windward side on the top of described hollow out ladder endless belt; The ratio of wind area excessively of the lower part of described hollow out ladder endless belt is 20%, highly is 20mm; The described wind area of crossing is than the ratio of the area that is meant air flow openwork part through lower part, said hollow out ladder endless belt with the area of the windward side of the lower part of described hollow out ladder endless belt; The through hole that the top of described hollow out ladder endless belt and lower part all are uniformly distributed with diameter 5mm; The cloth hole density on the top of described hollow out ladder endless belt is at least 1.5 times of cloth hole density of the lower part of described hollow out ladder endless belt, and described cloth hole density is meant the cloth hole number on the unit are.
Described zone of silence cooling is meant that the tow ambient temperature is 100 ℃, and zone of silence exit strand temperature is 220 ℃;
Described zone of silence cooling highly is 200mm.Described zone of silence cooling is between precooling and blowing cooling, and zone of silence is meant a calm zone that impales all around.
The wind-warm syndrome of described blowing cooling is 15 ℃; Described blowing is cooled to the lateral blowing cooling, and its technology is that the temperature of lateral blowing is 15 ℃, and humidity is 60%, and wind speed is 0.2m/s.
Described four rollers that are stretched as stretch, and the temperature of first roller is 21 ℃, and speed is 3256m/min; The temperature of second roller is 79 ℃, and speed is 4852m/min, and the temperature of the 3rd roller is 206 ℃; Speed is 6091m/min; The 4th roll temperature is 149 ℃, and speed is 5806m/min, and the speed of the 5th roller is 5762m/min.Described heat setting temperature is the temperature of the 4th roller, and described winding speed is 5762m/min.
The air bag polyester industrial yarn filament number 2dtex that described method makes; The physical index of resulting air bag polyester industrial yarn: line density deviation ratio 0.08%; Fracture strength 7.0cN/dtex, fracture strength CV value 0.14%, extension at break is 20.0%; Extension at break CV value 1.8%, the dry-hot shrinkage under 177 ℃, the test condition of 0.05cN/dtex is 3.0%.
Embodiment 5
A kind of preparation method of air bag polyester industrial yarn, its technological process is high sticking fusion polyester raw material---metering---the spray silk---cooling---oil------HEAT SETTING---winding shaping that stretches, wherein:
The sticking fusion polyester raw material of described height is meant that inherent viscosity is the sticking section of height of 1.03dl/g.
Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively;
Described slow cooling is meant that the tow ambient temperature is 260～300 ℃, and slow cooling district exit strand temperature is 285 ℃; Slow cooling highly is 300mm.
Described precooling is meant that the tow ambient temperature is 260 ℃, and pre-cooling zone exit strand temperature is 260 ℃.Described precooling is passive outer shroud precooling; Described passive outer shroud precooling is meant air spontaneous current loop device and then strand cooled off outside passive.Described passive outer shroud stepwise device is hollow out ladder endless belt, and described hollow out ladder endless belt is made up of two parts up and down; The ratio of wind area excessively on the top of described hollow out ladder endless belt is 60%; Highly be 40mm, the described wind area of crossing is than the ratio of the area that is meant air flow openwork part through top, said hollow out ladder endless belt with the area of the windward side on the top of described hollow out ladder endless belt; The ratio of wind area excessively of the lower part of described hollow out ladder endless belt is 30%, highly is 40mm; The described wind area of crossing is than the ratio of the area that is meant air flow openwork part through lower part, said hollow out ladder endless belt with the area of the windward side of the lower part of described hollow out ladder endless belt; The through hole that the top of described hollow out ladder endless belt and lower part all are uniformly distributed with diameter 10mm; The cloth hole density on the top of described hollow out ladder endless belt is at least 1.5 times of cloth hole density of the lower part of described hollow out ladder endless belt, and described cloth hole density is meant the cloth hole number on the unit are.
Described zone of silence cooling is meant that the tow ambient temperature is 100～160 ℃, and zone of silence exit strand temperature is 230 ℃; Described zone of silence cooling highly is 300mm.Described zone of silence cooling is between precooling and blowing cooling, and zone of silence is meant a calm zone that impales all around.
The wind-warm syndrome of described blowing cooling is 30 ℃; Described blowing is cooled to the lateral blowing cooling, and its technology is that the temperature of lateral blowing is 30 ℃, and humidity is 80%, and wind speed is 0.8m/s.
Described four rollers that are stretched as stretch, and the temperature of first roller is 20.5 ℃, and speed is 3353m/min; The temperature of second roller is 78 ℃, and speed is 4834m/min, and the temperature of the 3rd roller is 201 ℃; Speed is 6240m/min; The 4th roll temperature is 151 ℃, and speed is 6089m/min, and the speed of the 5th roller is 6004m/min.Described heat setting temperature is the temperature of the 4th roller, and described winding speed is 6004m/min.
The air bag polyester industrial yarn filament number 6dtex that described method makes; The physical index of resulting air bag polyester industrial yarn: line density deviation ratio 1.5%; Fracture strength 8.0cN/dtex, fracture strength CV value 2.5%, extension at break is 24.0%; Extension at break CV value 7.0%, the dry-hot shrinkage under 177 ℃, the test condition of 0.05cN/dtex is 4.0%.
Embodiment 6
A kind of preparation method of air bag polyester industrial yarn, its technological process is high sticking fusion polyester raw material---metering---the spray silk---cooling---oil------HEAT SETTING---winding shaping that stretches, wherein:
The sticking fusion polyester raw material of described height is meant that inherent viscosity is the sticking section of height of 1.06dl/g.
Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively;
Described slow cooling is meant that the tow ambient temperature is 280 ℃, and slow cooling district exit strand temperature is 283 ℃; Slow cooling highly is 276mm.
Described precooling is meant that the tow ambient temperature is 220 ℃, and pre-cooling zone exit strand temperature is 256 ℃.Described precooling is passive outer shroud precooling; Described passive outer shroud precooling is meant air spontaneous current loop device and then strand cooled off outside passive.Described passive outer shroud stepwise device is hollow out ladder endless belt, and described hollow out ladder endless belt is made up of two parts up and down; The ratio of wind area excessively on the top of described hollow out ladder endless belt is 50%; Highly be 31mm, the described wind area of crossing is than the ratio of the area that is meant air flow openwork part through top, said hollow out ladder endless belt with the area of the windward side on the top of described hollow out ladder endless belt; The ratio of wind area excessively of the lower part of described hollow out ladder endless belt is 26%, highly is 31mm; The described wind area of crossing is than the ratio of the area that is meant air flow openwork part through lower part, said hollow out ladder endless belt with the area of the windward side of the lower part of described hollow out ladder endless belt; The through hole that the top of described hollow out ladder endless belt and lower part all are uniformly distributed with diameter 8mm; The cloth hole density on the top of described hollow out ladder endless belt is at least 1.5 times of cloth hole density of the lower part of described hollow out ladder endless belt, and described cloth hole density is meant the cloth hole number on the unit are.
Described zone of silence cooling is meant that the tow ambient temperature is 131 ℃, and zone of silence exit strand temperature is 226 ℃; Described zone of silence cooling highly is 276mm.Described zone of silence cooling is between precooling and blowing cooling, and zone of silence is meant a calm zone that impales all around.
The wind-warm syndrome of described blowing cooling is 23 ℃; Described blowing is cooled to the lateral blowing cooling, and its technology is that the temperature of lateral blowing is 23 ℃, and humidity is 71%, and wind speed is 0.6m/s.
Described four rollers that are stretched as stretch, and the temperature of first roller is 21.9 ℃, and speed is 3351m/min; The temperature of second roller is 85 ℃, and speed is 5240m/min, and the temperature of the 3rd roller is 214 ℃; Speed is 6109m/min; The 4th roll temperature is 153 ℃, and speed is 6002m/min, and the speed of the 5th roller is 5819m/min.Described heat setting temperature is the temperature of the 4th roller, and described winding speed is 5819m/min.
The air bag polyester industrial yarn filament number 4dtex that described method makes; The physical index of resulting air bag polyester industrial yarn: line density deviation ratio 1.0%; Fracture strength 7.6cN/dtex, fracture strength CV value 1.3%, extension at break is 23.0%; Extension at break CV value 3.1%, the dry-hot shrinkage under 177 ℃, the test condition of 0.05cN/dtex is 3.71%.
Embodiment 7
A kind of preparation method of air bag polyester industrial yarn, its technological process is high sticking fusion polyester raw material---metering---the spray silk---cooling---oil------HEAT SETTING---winding shaping that stretches, wherein:
The sticking fusion polyester raw material of described height is meant that inherent viscosity is the sticking section of height of 1.07dl/g.
Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively;
Described slow cooling is meant that the tow ambient temperature is 280 ℃, and slow cooling district exit strand temperature is 284 ℃; Slow cooling highly is 277mm.
Described precooling is meant that the tow ambient temperature is 223 ℃, and pre-cooling zone exit strand temperature is 258 ℃.Described precooling is passive outer shroud precooling; Described passive outer shroud precooling is meant air spontaneous current loop device and then strand cooled off outside passive.Described passive outer shroud stepwise device is hollow out ladder endless belt, and described hollow out ladder endless belt is made up of two parts up and down; The ratio of wind area excessively on the top of described hollow out ladder endless belt is 52%; Highly be 34mm, the described wind area of crossing is than the ratio of the area that is meant air flow openwork part through top, said hollow out ladder endless belt with the area of the windward side on the top of described hollow out ladder endless belt; The ratio of wind area excessively of the lower part of described hollow out ladder endless belt is 24%, highly is 33mm; The described wind area of crossing is than the ratio of the area that is meant air flow openwork part through lower part, said hollow out ladder endless belt with the area of the windward side of the lower part of described hollow out ladder endless belt; The through hole that the top of described hollow out ladder endless belt and lower part all are uniformly distributed with diameter 8.1mm; The cloth hole density on the top of described hollow out ladder endless belt is at least 1.5 times of cloth hole density of the lower part of described hollow out ladder endless belt, and described cloth hole density is meant the cloth hole number on the unit are.
Described zone of silence cooling is meant that the tow ambient temperature is 134 ℃, and zone of silence exit strand temperature is 228 ℃; Described zone of silence cooling highly is 274mm.Described zone of silence cooling is between precooling and blowing cooling, and zone of silence is meant a calm zone that impales all around.
The wind-warm syndrome of described blowing cooling is 26 ℃; Described blowing is cooled to the lateral blowing cooling, and its technology is that the temperature of lateral blowing is 26 ℃, and humidity is 73%, and wind speed is 0.65m/s.
Described four rollers that are stretched as stretch, and the temperature of first roller is 25 ℃, and speed is 3315m/min; The temperature of second roller is 81 ℃, and speed is 5204m/min, and the temperature of the 3rd roller is 210 ℃; Speed is 6801m/min; The 4th roll temperature is 154 ℃, and speed is 6151m/min, and the speed of the 5th roller is 6005m/min.Described heat setting temperature is the temperature of the 4th roller, and described winding speed is 6005m/min.
The air bag polyester industrial yarn filament number 4.5dtex that described method makes; The physical index of resulting air bag polyester industrial yarn: line density deviation ratio 0.9%; Fracture strength 7.8cN/dtex, fracture strength CV value 1.2%, extension at break is 23.5%; Extension at break CV value 2.9%, the dry-hot shrinkage under 177 ℃, the test condition of 0.05cN/dtex is 3.64%.
Claims (7)
1. the manufacturing approach of an air bag polyester industrial yarn is characterized in that: described manufacturing approach, and its technological process is high sticking fusion polyester raw material, and------------oiling,---the spray silk stretches---HEAT SETTING---winding shaping in cooling in metering;
The sticking fusion polyester raw material of described height is meant that inherent viscosity is the PET section of 1.0～1.2dl/g;
Described cooling comprises slow cooling, precooling, zone of silence cooling and blowing cooling four parts successively;
Described slow cooling is meant that the tow ambient temperature is 260～300 ℃, and slow cooling district exit strand temperature is 280～285 ℃;
Described precooling is the precooling of passive outer shroud ladder; The precooling of described passive outer shroud ladder is meant that the air spontaneous current cools off through passive outer shroud stepwise device and then to strand; Described passive outer shroud stepwise device is hollow out ladder endless belt, and described hollow out ladder endless belt is made up of two parts up and down; The ratio of wind area excessively on the top of described hollow out ladder endless belt is 40～60%; Highly be 20～40mm, the described wind area of crossing is than the ratio of the area that is meant air flow openwork part through top, said hollow out ladder endless belt with the area of the windward side on the top of described hollow out ladder endless belt; The ratio of wind area excessively of the lower part of described hollow out ladder endless belt is 20～30%, highly is 20～40mm; The described wind area of crossing is than the ratio of the area that is meant air flow openwork part through lower part, said hollow out ladder endless belt with the area of the windward side of the lower part of described hollow out ladder endless belt;
Described precooling is meant that the tow ambient temperature is 160～260 ℃, and pre-cooling zone exit strand temperature is 250～260 ℃;
Described zone of silence cooling is meant that the tow ambient temperature is 100～160 ℃, and zone of silence exit strand temperature is 220～230 ℃;
The wind-warm syndrome of described blowing cooling is 15～30 ℃;
The physical index of resulting air bag polyester industrial yarn: line density deviation ratio≤1.5%; Fracture strength>=7.0cN/dtex; Fracture strength CV value≤2.5%; Extension at break is 22.0 ± 2.0%, extension at break CV value≤7.0%, and the dry-hot shrinkage under 177 ℃, the test condition of 0.05cN/dtex is 3.5 ± 0.5%.
2. the manufacturing approach of a kind of air bag polyester industrial yarn according to claim 1 is characterized in that, described slow cooling highly is 250～300mm.
3. the manufacturing approach of a kind of air bag polyester industrial yarn according to claim 1 is characterized in that, described zone of silence cooling highly is 200～300mm.
4. the manufacturing approach of a kind of air bag polyester industrial yarn according to claim 1; It is characterized in that; The through hole that the top of described hollow out ladder endless belt and lower part all are uniformly distributed with diameter 5～10mm; The cloth hole density on the top of described hollow out ladder endless belt is at least 1.5 times of cloth hole density of the lower part of described hollow out ladder endless belt, and described cloth hole density is meant the cloth hole number on the unit are.
5. the manufacturing approach of a kind of air bag polyester industrial yarn according to claim 1 is characterized in that, described zone of silence cooling is between precooling and blowing cooling, and zone of silence is meant a calm zone that impales all around.
6. the manufacturing approach of a kind of air bag polyester industrial yarn according to claim 1 is characterized in that, described blowing is cooled to the lateral blowing cooling, and its technology is that the temperature of lateral blowing is 15～30 ℃, and humidity is 60～80%, and wind speed is 0.2～0.8m/s.
7. the manufacturing approach of a kind of air bag polyester industrial yarn according to claim 1 is characterized in that, air bag polyester industrial yarn filament number 2～6dtex that described method makes.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397395A (en) * | 2013-08-07 | 2013-11-20 | 亚东工业（苏州）有限公司 | Preparation method of high-resilience polyester industrial filament yarns for supplementary restraint system |
| CN108691018A (en) * | 2018-06-13 | 2018-10-23 | 无锡索力得科技发展有限公司 | A kind of production method of safe automobile air bag polyester industrial yarn |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529368A (en) * | 1983-12-27 | 1985-07-16 | E. I. Du Pont De Nemours & Company | Apparatus for quenching melt-spun filaments |
| US4863662A (en) * | 1983-12-22 | 1989-09-05 | Toray Industries | Method for melt-spinning thermoplastic polymer fibers |
| US5593705A (en) * | 1993-03-05 | 1997-01-14 | Akzo Nobel Nv | Apparatus for melt spinning multifilament yarns |
| CN101139735A (en) * | 2007-08-16 | 2008-03-12 | 江苏恒力化纤有限公司 | Method for preparing ultra-fine denier polyester filament yarn |
| CN101634052A (en) * | 2009-08-24 | 2010-01-27 | 浙江海利得新材料股份有限公司 | Process for producing polyester industrial fiber for processing safe air bag of automobile |
| CN101792938A (en) * | 2010-04-01 | 2010-08-04 | 东华大学 | Novel preparation technology of polyoxymethylene fiber |
-
2012
- 2012-09-03 CN CN201210321150.3A patent/CN102787377B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4863662A (en) * | 1983-12-22 | 1989-09-05 | Toray Industries | Method for melt-spinning thermoplastic polymer fibers |
| US4529368A (en) * | 1983-12-27 | 1985-07-16 | E. I. Du Pont De Nemours & Company | Apparatus for quenching melt-spun filaments |
| US5593705A (en) * | 1993-03-05 | 1997-01-14 | Akzo Nobel Nv | Apparatus for melt spinning multifilament yarns |
| CN101139735A (en) * | 2007-08-16 | 2008-03-12 | 江苏恒力化纤有限公司 | Method for preparing ultra-fine denier polyester filament yarn |
| CN101634052A (en) * | 2009-08-24 | 2010-01-27 | 浙江海利得新材料股份有限公司 | Process for producing polyester industrial fiber for processing safe air bag of automobile |
| CN101792938A (en) * | 2010-04-01 | 2010-08-04 | 东华大学 | Novel preparation technology of polyoxymethylene fiber |
Non-Patent Citations (1)
| Title |
|---|
| 汪潇 等: "涤纶工业丝的晶态结构与性能的关系", 《合成纤维工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397395A (en) * | 2013-08-07 | 2013-11-20 | 亚东工业（苏州）有限公司 | Preparation method of high-resilience polyester industrial filament yarns for supplementary restraint system |
| CN108691018A (en) * | 2018-06-13 | 2018-10-23 | 无锡索力得科技发展有限公司 | A kind of production method of safe automobile air bag polyester industrial yarn |
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