CN101780714A - Cold air knife device of TPU film blowing equipment and TPU film blowing equipment - Google Patents
Cold air knife device of TPU film blowing equipment and TPU film blowing equipment Download PDFInfo
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- CN101780714A CN101780714A CN 201010119542 CN201010119542A CN101780714A CN 101780714 A CN101780714 A CN 101780714A CN 201010119542 CN201010119542 CN 201010119542 CN 201010119542 A CN201010119542 A CN 201010119542A CN 101780714 A CN101780714 A CN 101780714A
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- 238000010096 film blowing Methods 0.000 title abstract 6
- 230000007246 mechanism Effects 0.000 claims abstract description 125
- 238000004519 manufacturing process Methods 0.000 abstract description 23
- 238000007664 blowing Methods 0.000 abstract 3
- 230000000704 physical effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 144
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 64
- 238000007599 discharging Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 230000002950 deficient Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Abstract
A cold air knife device of TPU film blowing equipment and the TPU film blowing equipment. The cold air knife device of the TPU film blowing equipment is provided with an air cavity, an air blowing mechanism and an air outlet mechanism, wherein the air blowing mechanism and the air outlet mechanism are respectively arranged on two sides of the air cavity, the air blowing mechanism is fixedly communicated with the air cavity, and the air outlet mechanism is fixedly communicated with the air cavity; the air cavity is provided with an air cavity main body and an end part, the air cavity main body is fixedly communicated with the end part, the end part is provided with an opening, and the opening is fixedly communicated with the air outlet mechanism; the air outlet mechanism is provided with a first air outlet plate and a second air outlet plate which are parallel to each other, and the first air outlet plate and the second air outlet plate are fixedly connected with the opening of the end part respectively. The TPU film blowing equipment comprises a die head, an air ring, a herringbone plate, a first traction roller, a winding device and a cold air knife device, wherein the cold air knife device is arranged between the herringbone plate and the first traction roller. The invention can prevent the adhesion of the film, improve the production efficiency and ensure the physical property of the TPU film.
Description
Technical field
The present invention relates to the TPU technical field of processing equipment, particularly relate to a kind of cold wind knife system and TPU blown film equipment of TPU blown film equipment.
Background technology
TPU is the abbreviation of Thermoplastic Urethane, and Chinese is a TPUE.The TPU material has good high-tension, high-tensile strength, tough and ageing-resistant characteristic, is again a kind of good environment-friendly materials.The TPU material not only have other plastic material performance such as incomparable intensity height, good toughness, wear-resisting, cold-resistant, oil resistant, water-fast, ageing-resistant, weatherability, also have the performance of many excellences such as high water proofing property, poisture-penetrability, windproof, winter protection, antibiotic, mildew-resistant, warming, uvioresistant and energy release simultaneously.So the TPU material has been widely used in fields such as health care, electronic apparatus, industry and physical culture.
In the prior art, the production process of TPU thin-film material generally is: after raw material is handled through the die head of TPU blown film equipment, blow out film by vane, at this moment, film is under the effect of vane, as a sack that is full of air, under the effect of the first traction pressure roller, film is discharged the air extrusion of inside behind collapser gradually, collects by wrap-up at last.
Yet film often adhesion phenomenon occurs because temperature is higher between the formed double-layer films behind the discharge air easily when entering first carry-over pinch rolls through collapser, and particularly to the product of some kind, adhesion phenomenon is even more serious.In addition, when film came out to collapser again to first carry-over pinch rolls from die head, the temperature of film was very high, and being easy to influences the intensity of cooled finished films because the friction of first carry-over pinch rolls is a greater impact the intensity of film.For fear of the adhesion between the film and prevent the higher influence of temperature to film performance, have in the production process by underspeeding, the time that enters first carry-over pinch rolls with the proper extension film realizes reducing the temperature of film, this mode not only can not really effectively solve the adhesion problems of film, and has restricted the speed of production of film greatly.
Therefore, at prior art, be necessary to solve the defective of above-mentioned film blocking from root.Therefore, provide a kind of cold wind knife system of TPU blown film equipment and TPU blown film equipment very necessary to solve the prior art weak point.
Summary of the invention
The cold wind knife system and the TPU blown film equipment that the objective of the invention is to avoid the deficiencies in the prior art part and a kind of TPU blown film equipment is provided, make film when entering first carry-over pinch rolls, handle through the cold wind knife system earlier, and reduce the temperature of film rapidly, and then prevent adhesion problems between the film, can keep the characteristic of TPU film.
Purpose of the present invention realizes by following technical measures:
A kind of cold wind knife system of TPU blown film equipment,
Be provided with wind chamber, Blast mechanism and go out wind mechanism, described Blast mechanism and describedly go out the both sides that wind mechanism is arranged at described wind chamber respectively, described Blast mechanism fixedly is communicated with described wind chamber, describedly goes out wind mechanism and fixedly is communicated with described wind chamber;
Described wind chamber is provided with wind cavity main body and end, and described wind cavity main body fixedly is communicated with described end, and described end is provided with opening, and described opening goes out wind mechanism and fixedly is communicated with described;
Describedly go out wind mechanism and be provided with first going out aerofoil and second and go out aerofoil of being parallel to each other, described first goes out aerofoil and described second goes out aerofoil and fixedlys connected with the opening of described end respectively.
Above-mentioned cold wind knife system is arranged between the collapser and first carry-over pinch rolls of TPU blown film equipment, is used for the film that is about to enter is cooled off rapidly.
Preferably, above-mentioned end is set to streamlined end.
Above, above-mentioned first to go out the distance D that aerofoil and described second goes out between the aerofoil be 2～6mm.
Further, above-mentioned first length L that goes out aerofoil
1Be 1.80～2.00m;
Above-mentioned second goes out the length L of aerofoil
2Be 1.80～2.00m.
Further, above-mentioned first length L that goes out aerofoil
1Be 1.90m;
Above-mentioned second goes out the length L of aerofoil
2Be 1.90m.
A kind of TPU blown film equipment includes die head, vane, collapser, first carry-over pinch rolls and wrap-up, also is provided with the cold wind knife system,
Described cold wind knife system is arranged between described collapser and described first carry-over pinch rolls,
Described cold wind knife system is provided with wind chamber, Blast mechanism and goes out wind mechanism, described Blast mechanism and describedly go out the both sides that wind mechanism is arranged at described wind chamber respectively, and described Blast mechanism fixedly is communicated with described wind chamber, describedly goes out wind mechanism and fixedly is communicated with described wind chamber;
Described wind chamber is provided with wind cavity main body and end, and described end is provided with opening, and described wind cavity main body fixedly is communicated with described end, and the opening of described end goes out wind mechanism and fixedly is communicated with described;
Describedly go out wind mechanism and be provided with first going out aerofoil and second and go out aerofoil of being parallel to each other, described first goes out aerofoil and described second goes out aerofoil part and does not fixedly connected with the opening of described end.
Preferably, above-mentioned end is set to streamlined end.
Above, above-mentioned first to go out the distance D that aerofoil and described second goes out between the aerofoil be 2～6mm.
Further, above-mentioned first length L that goes out aerofoil
1Be 1.80～2.00m;
Above-mentioned second goes out the length L of aerofoil
2Be 1.80～2.00m.
Further, above-mentioned first length L that goes out aerofoil
1Be 1.90m;
Above-mentioned second goes out the length L of aerofoil
2Be 1.90m.
The cold wind knife system of a kind of TPU blown film equipment provided by the invention, be provided with wind chamber, Blast mechanism and go out wind mechanism, Blast mechanism and go out the both sides that wind mechanism is arranged at the wind chamber respectively, Blast mechanism fixedly is communicated with the wind chamber, goes out wind mechanism and fixedly is communicated with described wind chamber; The wind chamber is provided with wind cavity main body and end, and the wind cavity main body fixedly is communicated with the end, and the end is provided with opening, opening with go out wind mechanism and fixedly be communicated with; Go out wind mechanism and be provided with first going out aerofoil and second and go out aerofoil of being parallel to each other, first goes out aerofoil and second goes out aerofoil and fixedlys connected with the opening of end respectively.In this cold wind knife system, Blast mechanism carries out air blast to the wind chamber, the wind cavity main body is bigger, the Blast mechanism air blast can not change the pressure of wind cavity main body part substantially, opening through the end, go out aerofoil and second first and go out that formed air outlet place can produce rapid pressure change between the aerofoil, thereby the wind speed of the wind of discharging from air outlet is bigger.This cold wind knife system is assemblied between the collapser and the first traction pressure roller of TPU blown film equipment, because wind speed is bigger, can cool off rapidly film, therefore, can reduce the temperature of film rapidly, thereby effectively prevent the adhesion between the film, thereby improve the problem of adhesion in the TPU film production process, but enlarge the production kind of TPU blown film equipment, owing to solved the adhesion problems of film, therefore, the throughput rate of film has also obtained further raising.Owing to can cool off the temperature of film rapidly, therefore, the influence that can effectively avoid first carry-over pinch rolls that film strength is caused so this TPU blown film equipment not only can improve speed of production, increases output, and can keep the characteristic of TPU film unaffected.
A kind of TPU blown film equipment provided by the invention, include die head, vane, collapser, first carry-over pinch rolls and wrap-up, also be provided with the cold wind knife system, the cold wind knife system is arranged between the collapser and first carry-over pinch rolls, the cold wind knife system is provided with wind chamber, Blast mechanism and goes out wind mechanism, Blast mechanism and go out the both sides that wind mechanism is arranged at the wind chamber respectively, Blast mechanism fixedly is communicated with the wind chamber, goes out wind mechanism and fixedly is communicated with the wind chamber; The wind chamber is provided with wind cavity main body and end, and the end is provided with opening, and the wind cavity main body fixedly is communicated with the end, the opening of end with go out wind mechanism and fixedly be communicated with; Go out wind mechanism and be provided with first going out aerofoil and second and go out aerofoil of being parallel to each other, first goes out aerofoil and second goes out aerofoil part and does not fixedly connected with the opening of end.Between the collapser of TPU blown film equipment and the first traction pressure roller, the cold wind knife system is set, make film when entering first carry-over pinch rolls, handle through the cold wind knife system earlier, can cool off rapidly film, therefore, can reduce the temperature of film rapidly, thereby effectively prevent the adhesion between the film, thereby improve the problem of adhesion in the TPU film production process, but enlarge the production kind of TPU blown film equipment, because solved the adhesion problems of film, therefore, the throughput rate of film has also obtained further raising.Owing to can cool off the temperature of film rapidly, therefore, the influence that can effectively avoid first carry-over pinch rolls that film strength is caused so this TPU blown film equipment not only can improve speed of production, increases output, and can keep the characteristic of TPU film unaffected.
Description of drawings
The present invention is further illustrated to utilize accompanying drawing, but the content in the accompanying drawing does not constitute any limitation of the invention.
Fig. 1 is the structural representation of embodiment 1 of the cold wind knife system of a kind of TPU blown film equipment of the present invention;
Fig. 2 is the explosive view of Fig. 1;
Fig. 3 is the structural representation of embodiment 2 of the cold wind knife system of a kind of TPU blown film of the present invention equipment;
Fig. 4 is the front view of Fig. 3;
Fig. 5 is the structural representation of a kind of TPU blown film of the present invention equipment.
In Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, comprising:
Cold wind knife system 100, wind chamber 200, wind cavity main body 210, end 220, opening 221, Blast mechanism 300, go out wind mechanism 400, first and go out aerofoil 410, second and go out aerofoil 420, air outlet 430, die head 900, vane 500, collapser 600, first carry-over pinch rolls 700, film 800.
The specific embodiment
With the following Examples the present invention is further described.
Embodiment one
A kind of cold wind knife system of TPU blown film equipment as shown in Figure 1 and Figure 2, comprises wind chamber 200, Blast mechanism 300 and goes out wind mechanism 400.Blast mechanism 300 and go out the both sides that wind mechanism 400 is arranged at wind chamber 200 respectively, Blast mechanism 300 fixedly is communicated with wind chamber 200, goes out wind mechanism 400 and fixedly is communicated with wind chamber 200.During use, aweather chamber 200 air blast of Blast mechanism 300, Blast mechanism 300 is aweather carried pressure-air in chamber 200 usually, and pressure-air enters wind chamber 200 because the wind chamber 200 fixing wind mechanism 400 that go out that are communicated with are discharged.
Usually, wind chamber 200 can be provided with an air inlet, and Blast mechanism 300 can pass through aweather chamber 200 air blast of air inlet.
Usually, wind chamber 200 and go out wind mechanism 400 and can be set to integrated formed structure, like this, on the one hand can be so that whole device good airproof performance can improve air blast efficient.Simultaneously, integrated design also can save production cost.
First goes out the aerofoil 410 and second setting that goes out aerofoil 420, make that 220 gases of discharging obtain a buffering from the end, like this, thereby just can avoid causing the defective that distance increases between the opening 221, also can avoid making the unsettled defective of pressure-air air-flow that blows out because pressure-air impacts internal face shake that the sidewall of end 220 makes end 220 owing to the sidewall that high pressure draught promotes end 220 through end 220.
The cold wind knife system 100 of a kind of TPU blown film equipment of the present invention, what face in its course of work is gases at high pressure, therefore, the various piece of its formation need have certain intensity, especially bears the part of high pressure.Therefore, first goes out aerofoil 410, second and goes out aerofoil 420 and end 220 and adopt the material preparation with certain intensity to form.
First goes out the length L of aerofoil 410
1Be 1.80～2.00m, second goes out the length L of aerofoil 420
2Be 1.80～2.00m, first goes out the length L of aerofoil 410
1Be preferably 1.90m, second goes out the length L of aerofoil 420
2Be preferably 1.90m, so that the film dimensions of being produced with TPU blown film equipment adapts.Certainly, if the film dimensions that TPU blown film equipment is produced is bigger or less, also can be provided with first flexibly and goes out the length L that aerofoil 410 and second goes out aerofoil 420
1And L
2
The cold wind knife system 100 of a kind of TPU blown film equipment of the present invention, air blast is carried out in 300 pairs of wind chambeies of Blast mechanism 200, because wind cavity main body 210 is bigger, Blast mechanism 300 air blast can not change substantially at the pressure of wind cavity main body 210, opening 221 through end 220, go out aerofoil 410 and second first and go out that formed air outlet 430 places can produce rapid pressure change between the aerofoil 420, the cold wind of discharging from air outlet 430 has bigger pressure, wind speed is more anxious, therefore, can reduce the temperature of cooled object rapidly.
The cold wind knife system 100 of a kind of TPU blown film equipment of the present invention, its using method is:
As shown in Figure 5, cold wind knife system 100 is assemblied between the collapser 600 and the first traction pressure roller 700 of TPU blown film equipment, makes the air outlet 430 of cold wind knife system 100 over against film 800 surfaces.In order to improve cooling velocity and to prevent that single face from carrying out cold wind cutter when operation to film 800, air-flow causes the bending of film 800, usually, adopts the identical cold wind knife system of two nested structures 100, two cover cold wind knife systems 100 to be arranged at the both sides of film 800 respectively.
Like this, when film 800 entered first carry-over pinch rolls 700 by collapser 600, the cold wind knife system 100 of both sides cooled off from both sides to film 800 respectively, so can cool off rapidly film 800, can reduce the temperature of film 800 rapidly, thereby effectively prevent the adhesion between the film 800.Improved the problem of the adhesion in TPU film 800 production processes greatly, but enlarged the production kind of TPU blown film equipment, owing to solved the adhesion problems of film 800, therefore, the throughput rate of film 800 has also obtained further raising.Owing to can cool off the temperature of film rapidly, therefore, the influence that can effectively avoid 700 pairs of film strengths of first carry-over pinch rolls to cause not only can improve speed of production so this cold wind knife system 100 makes when producing, increase output, and can keep the physical characteristic of TPU film unaffected.
Embodiment two
A kind of cold wind knife system of TPU blown film equipment as shown in Figure 3, Figure 4, comprises wind chamber 200, Blast mechanism 300 and goes out wind mechanism 400.Blast mechanism 300 and go out the both sides that wind mechanism 400 is arranged at wind chamber 200, Blast mechanism 300 fixedly is communicated with wind chamber 200, go out wind mechanism 400 and fixedly be communicated with wind chamber 200, wind chamber 200 with go out wind mechanism 400 structure that is formed in one.
During use, aweather chamber 200 air blast of Blast mechanism 300, Blast mechanism 300 is aweather carried pressure-air in chamber 200 usually, and pressure-air enters wind chamber 200 because the wind chamber 200 fixing wind mechanism 400 that go out that are communicated with are discharged.Wind chamber 200 and go out wind mechanism 400 and can be set to integrated formed structure, like this, on the one hand can be so that whole device good airproof performance can improve air blast efficient.Simultaneously, integrated design also can save production cost.
First goes out the aerofoil 410 and second setting that goes out aerofoil 420, make that 220 gases of discharging obtain a buffering from the end, like this, thereby just can avoid causing the defective that distance increases between the opening 221, also can avoid making the unsettled defective of pressure-air air-flow that blows out because pressure-air impacts internal face shake that the sidewall of end 220 makes end 220 owing to the sidewall that high pressure draught promotes end 220 through end 220.
The cold wind knife system 100 of a kind of TPU blown film equipment of the present invention, what face in its course of work is gases at high pressure, therefore, the various piece of its formation need have certain intensity, especially bears the part of high pressure.Therefore, first goes out aerofoil 410, second and goes out aerofoil 420 and end 220 and adopt the material preparation with certain intensity to form.
First goes out the length L of aerofoil 410
1Be 1.80～2.00m, second goes out the length L of aerofoil 420
2Be 1.80～2.00m, first goes out the length L of aerofoil 410
1Be preferably 1.90m, second goes out the length L of aerofoil 420
2Be preferably 1.90m, so that the film dimensions of being produced with TPU blown film equipment adapts.Certainly, if the film dimensions that TPU blown film equipment is produced is bigger or less, also can be provided with first flexibly and goes out the length L that aerofoil 410 and second goes out aerofoil 420
1And L
2
The cold wind knife system 100 of a kind of TPU blown film equipment of the present invention, air blast is carried out in 300 pairs of wind chambeies of Blast mechanism 200, because wind cavity main body 210 is bigger, Blast mechanism 300 air blast can not change substantially at the pressure of wind cavity main body 210, opening 221 through end 220, go out aerofoil 410 and second first and go out that formed air outlet 430 places can produce rapid pressure change between the aerofoil 420, the cold wind of discharging from air outlet 430 has bigger pressure, wind speed is more anxious, therefore, can reduce the temperature of cooled object rapidly.
This cold wind knife system 100, its using method is:
As shown in Figure 5, cold wind knife system 100 is assemblied between the collapser 600 and the first traction pressure roller 700 of TPU blown film equipment, makes the air outlet 430 of cold wind knife system 100 over against film 800 surfaces.In order to improve cooling velocity and to prevent that single face from carrying out cold wind cutter when operation to film 800, air-flow causes the bending of film 800, usually, adopts the identical cold wind knife system of two nested structures 100, two cover cold wind knife systems 100 to be arranged at the both sides of film 800 respectively.
Like this, when film 800 entered first carry-over pinch rolls 700 by collapser 600, the cold wind knife system 100 of both sides cooled off from both sides to film 800 respectively, so can cool off rapidly film 800, can reduce the temperature of film 800 rapidly, thereby effectively prevent the adhesion between the film 800.Improved the problem of the adhesion in TPU film 800 production processes greatly, but enlarged the production kind of TPU blown film equipment, owing to solved the adhesion problems of film 800, therefore, the throughput rate of film 800 has also obtained further raising.Owing to can cool off the temperature of film rapidly, therefore, the influence that can effectively avoid 700 pairs of film strengths of first carry-over pinch rolls to cause not only can improve speed of production so this cold wind knife system 100 makes when producing, increase output, and can keep the physical characteristic of TPU film unaffected.
Embodiment three
A kind of TPU blown film equipment, as shown in Figure 5, comprise die head 900, vane 500, collapser 600, first carry-over pinch rolls 700 and the wrap-up, also be provided with two cover cold wind knife systems 100, every cover cold wind knife system 100 is arranged between the collapser 600 and first carry-over pinch rolls 700.
The production process of this TPU blown film equipment is: after raw material is handled through the die head 900 of TPU blown film equipment earlier, blow out film 800 by vane 500, at this moment, film 800 is under the effect of vane 500, as a sack that is full of air, under the effect of the first traction pressure roller 700, film 800 is discharged the air extrusion of film 800 inside behind collapser 600 gradually, collects by wrap-up at last.Film 800 is before entering first carry-over pinch rolls 700 behind the collapser 600, two cover cold wind knife systems 100 carry out the air blast cooling from both sides to film 800 respectively, collect through wrap-up after the cooling again.
Every cover cold wind knife system 100 comprises wind chamber 200, Blast mechanism 300 and goes out wind mechanism 400.Blast mechanism 300 and go out the both sides that wind mechanism 400 is arranged at wind chamber 200 respectively, Blast mechanism 300 is fixedlyed connected with wind chamber 200, goes out wind mechanism 400 and fixedly is communicated with wind chamber 200.During use, aweather chamber 200 air blast of Blast mechanism 300, Blast mechanism 300 is aweather carried pressure-air in chamber 200 usually, and pressure-air enters wind chamber 200 because the wind chamber 200 fixing wind mechanism 400 that go out that are communicated with are discharged.
Usually, wind chamber 200 can be provided with an air inlet, and Blast mechanism 300 can pass through aweather chamber 200 air blast of air inlet.
Usually, wind chamber 200 and go out wind mechanism 400 and can be set to integrated formed structure, like this, on the one hand can be so that whole device good airproof performance can improve air blast efficient.Simultaneously, integrated design also can save production cost.
Wind chamber 200 comprises wind cavity main body 210 and end 220, and end 220 is provided with opening 221, and wind cavity main body 210 fixedly is communicated with end 220, the opening 221 of end 220 with go out wind mechanism 400 and fixedly connected.Go out wind mechanism 400 and comprise first going out aerofoil 410 and second and go out aerofoil 420, the first and go out aerofoil 410, second and go out aerofoil 420 wind and do not fixedly connected with opening 221 of being parallel to each other, first to go out the distance D that aerofoil 410 and described second goes out between the aerofoil 420 be 2～6mm.Aweather chamber 200 air blast of Blast mechanism 300, the distinguished and admirable end 220 that behind wind cavity main body 210, enters, distinguished and admirable when wind cavity main body 210, because the space of wind cavity main body 210 is bigger, can not produce bigger pressure change, and when entering end 220, because the variation of end 220 shapes, when making by opening 221, wind speed more quickly.Going out first of wind mechanism 400 goes out the opening 221 that aerofoil 410 and second goes out aerofoil 420 and fixedlys connected.First goes out aerofoil 410 and second goes out between the aerofoil 420 to form long and narrow together slit and is air outlet 430, and the air of discharging from this air outlet 430 has higher pressure and higher speed.
First goes out the aerofoil 410 and second setting that goes out aerofoil 420, make that 220 gases of discharging obtain a buffering from the end, like this, thereby just can avoid causing the defective that distance increases between the opening 221, also can avoid making the unsettled defective of pressure-air air-flow that blows out because pressure-air impacts internal face shake that the sidewall of end 220 makes end 220 owing to the sidewall that high pressure draught promotes end 220 through end 220.
Cold wind knife system 100, what face in its course of work is gases at high pressure, therefore, the various piece of its formation need have certain intensity, especially bears the part of high pressure.Therefore, first goes out aerofoil 410, second and goes out aerofoil 420 and end 220 and adopt the material preparation with certain intensity to form.
First goes out the length L of aerofoil 410
1Be 1.80～2.00m, second goes out the length L of aerofoil 420
2Be 1.80～2.00m, first goes out the length L of aerofoil 410
1Be preferably 1.90m, second goes out the length L of aerofoil 420
2Be preferably 1.90m, so that the film dimensions of being produced with TPU blown film equipment adapts.Certainly, if the film dimensions that TPU blown film equipment is produced is bigger or less, also can be provided with first flexibly and goes out the length L that aerofoil 410 and second goes out aerofoil 420
1And L
2
Air blast is carried out in 300 pairs of wind chambeies of the Blast mechanism of cold wind knife system 200, because wind cavity main body 210 is bigger, Blast mechanism 300 air blast can not change substantially at the pressure of wind cavity main body 210, opening 221 through end 220, go out aerofoil 410 and second first and go out that formed air outlet 430 places can produce rapid pressure change between the aerofoil 420, the cold wind of discharging from air outlet 430 has bigger pressure, and wind speed is more anxious, therefore, can reduce the temperature of cooled object rapidly.
A kind of TPU blown film equipment of the present invention, its using method is as follows:
Cold wind knife system 100 is assemblied between the collapser 600 and the first traction pressure roller 700 of TPU blown film equipment, makes the air outlet 430 of cold wind knife system 100 over against film surface.In order to improve cooling velocity and to prevent that single face from carrying out cold wind cutter when operation to film, air-flow causes the bending of film, usually, adopts the identical cold wind knife system of two nested structures 100, two cover cold wind knife systems 100 to be arranged at the both sides of film respectively.So, when film entered first carry-over pinch rolls 700 by collapser 600, the cold wind knife system 100 of both sides cooled off film from both sides respectively, so can cool off rapidly film, can reduce the temperature of film rapidly, thereby effectively prevent the adhesion between the film.Improved the problem of the adhesion in the TPU film production process greatly, but enlarged the production kind of TPU blown film equipment, owing to solved the adhesion problems of film, therefore, the throughput rate of film has also obtained further raising.Owing to can cool off the temperature of film rapidly, therefore, the influence that can effectively avoid 700 pairs of film strengths of first carry-over pinch rolls to cause not only can improve speed of production so this cold wind knife system 100 makes when producing, increase output, and can keep the physical characteristic of TPU film unaffected.
Should be noted that at last; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although the present invention has been done detailed description with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the essence and the scope of technical solution of the present invention.
Claims (10)
1. the cold wind knife system of a TPU blown film equipment is characterized in that:
Be provided with wind chamber, Blast mechanism and go out wind mechanism, described Blast mechanism and describedly go out the both sides that wind mechanism is arranged at described wind chamber respectively, described Blast mechanism fixedly is communicated with described wind chamber, describedly goes out wind mechanism and fixedly is communicated with described wind chamber;
Described wind chamber is provided with wind cavity main body and end, and described wind cavity main body fixedly is communicated with described end, and described end is provided with opening, and described opening goes out wind mechanism and fixedly is communicated with described;
Describedly go out wind mechanism and be provided with first going out aerofoil and second and go out aerofoil of being parallel to each other, described first goes out aerofoil and described second goes out aerofoil and fixedlys connected with the opening of described end respectively.
2. the cold wind knife system of TPU blown film equipment according to claim 1 is characterized in that:
Described end is set to streamlined end.
3. the cold wind knife system of TPU blown film equipment according to claim 1 and 2 is characterized in that:
Described first to go out the distance D that aerofoil and described second goes out between the aerofoil be 2～6mm.
4. the cold wind knife system of TPU blown film equipment according to claim 3 is characterized in that:
Described first goes out the length L of aerofoil
1Be 1.80～2.00m;
Described second goes out the length L of aerofoil
2Be 1.80～2.00m.
5. the cold wind knife system of TPU blown film equipment according to claim 4 is characterized in that:
Described first goes out the length L of aerofoil
1Be 1.90m;
Described second goes out the length L of aerofoil
2Be 1.90m.
6. a TPU blown film equipment includes die head, vane, collapser, first carry-over pinch rolls and wrap-up, it is characterized in that: also be provided with the cold wind knife system,
Described cold wind knife system is arranged between described collapser and described first carry-over pinch rolls,
Described cold wind knife system is provided with wind chamber, Blast mechanism and goes out wind mechanism, described Blast mechanism and describedly go out the both sides that wind mechanism is arranged at described wind chamber respectively, and described Blast mechanism fixedly is communicated with described wind chamber, describedly goes out wind mechanism and fixedly is communicated with described wind chamber;
Described wind chamber is provided with wind cavity main body and end, and described end is provided with opening, and described wind cavity main body fixedly is communicated with described end, and the opening of described end goes out wind mechanism and fixedly is communicated with described;
Describedly go out wind mechanism and be provided with first going out aerofoil and second and go out aerofoil of being parallel to each other, described first goes out aerofoil and described second goes out aerofoil part and does not fixedly connected with the opening of described end.
7. TPU blown film equipment according to claim 6 is characterized in that:
Described end is set to streamlined end.
8. according to claim 6 or 7 described TPU blown film equipment, it is characterized in that:
Described first to go out the distance D that aerofoil and described second goes out between the aerofoil be 2～6mm.
9. TPU blown film equipment according to claim 8 is characterized in that:
Described first length L that goes out aerofoil is 1.80～2.00m;
Described second length L that goes out aerofoil is 1.80～2.00m.
10. TPU blown film equipment according to claim 9 is characterized in that:
Described first length L that goes out aerofoil is 1.90m;
Described second length L that goes out aerofoil is 1.90m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010119542 CN101780714A (en) | 2010-03-08 | 2010-03-08 | Cold air knife device of TPU film blowing equipment and TPU film blowing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010119542 CN101780714A (en) | 2010-03-08 | 2010-03-08 | Cold air knife device of TPU film blowing equipment and TPU film blowing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101780714A true CN101780714A (en) | 2010-07-21 |
Family
ID=42520912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010119542 Pending CN101780714A (en) | 2010-03-08 | 2010-03-08 | Cold air knife device of TPU film blowing equipment and TPU film blowing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101780714A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2322703Y (en) * | 1998-04-02 | 1999-06-09 | 华通电脑股份有限公司 | Improved air knife |
| CN1303768A (en) * | 1999-12-13 | 2001-07-18 | 住友化学工业株式会社 | Resin guide equipment of blow moulding apparatus and method for producing film |
-
2010
- 2010-03-08 CN CN 201010119542 patent/CN101780714A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2322703Y (en) * | 1998-04-02 | 1999-06-09 | 华通电脑股份有限公司 | Improved air knife |
| CN1303768A (en) * | 1999-12-13 | 2001-07-18 | 住友化学工业株式会社 | Resin guide equipment of blow moulding apparatus and method for producing film |
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Application publication date: 20100721 |