CN201712174U - TPU film blowing equipment - Google Patents

TPU film blowing equipment Download PDF

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Publication number
CN201712174U
CN201712174U CN2010202491289U CN201020249128U CN201712174U CN 201712174 U CN201712174 U CN 201712174U CN 2010202491289 U CN2010202491289 U CN 2010202491289U CN 201020249128 U CN201020249128 U CN 201020249128U CN 201712174 U CN201712174 U CN 201712174U
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China
Prior art keywords
wind
aerofoil
air
film
goes out
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Expired - Lifetime
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CN2010202491289U
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焦连英
杨文会
吴建其
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Zhongshan Breathtex Speciality Material Co Ltd
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Zhongshan Breathtex Plastic New Materials Co ltd
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Abstract

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 cold air knife device is provided with an air cavity, an air blowing mechanism and an air outlet mechanism, 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 utility model discloses can prevent the adhesion of film, improve production efficiency, guarantee the physical properties of TPU film.

Description

A kind of TPU blown film equipment
The application is a kind of cold wind knife system of TPU blown film equipment and dividing an application of TPU blown film equipment (application number 201020125396.X, March 8 2010 applying date) patent application.
Technical field
The utility model relates to the TPU technical field of processing equipment, particularly relates to a kind of TPU blown film equipment with cold wind knife system.
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 and have the TPU blown film equipment of cold wind knife system to solve very necessity of prior art weak point.
Summary of the invention
The purpose of this utility model is to avoid the deficiencies in the prior art part and a kind of TPU blown film equipment with cold wind knife system 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.
The purpose of this utility model realizes by following technical measures:
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, and described cold wind knife system is arranged between described collapser and described first carry-over pinch rolls.
Preferably, above-mentioned 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, 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 and fixedlys connected with the opening of described end respectively,
Preferred, 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 goes out the length L of 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 goes out the length L of aerofoil 1Be 1.90m;
Above-mentioned second goes out the length L of aerofoil 2Be 1.90m.
A kind of TPU blown film equipment that the utility model provides, 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 and fixedlys connected with the opening of end respectively.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
Utilize accompanying drawing that the utility model is further described, but the content in the accompanying drawing does not constitute any restriction of the present utility model.
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 utility model;
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 utility model 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 utility model 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 utility model 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.
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 fixedly be not communicated 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.Go out first of wind mechanism 400 and go out 221 fixing connections of opening that aerofoil 410 and second goes out aerofoil 420.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 bigger 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.
Blast mechanism 300 is arranged on the middle part of wind chamber 200 1 sides usually, like this, distance between the diverse location of Blast mechanism 300 and air outlet 430 is also just different, thereby make easily and the near position of Blast mechanism 300 distances, then wind speed is bigger, and then wind speed is less apart from Blast mechanism 300 distances air outlet 430 positions far away, therefore, end 220 is set to streamlined, makes that the wind speed at diverse location place of air outlet 430 is more even.
The cold wind knife system 100 of a kind of TPU blown film equipment of the present utility model, 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 utility model, 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 utility model, 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.
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 be communicated with.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 bigger 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.
Blast mechanism 300 is arranged on wind chamber 200 1 sides usually, distance between the diverse location of Blast mechanism 300 and air outlet 430 is also just different, thereby make easily and the near position of Blast mechanism 300 distances, then wind speed is bigger, then wind speed is less apart from Blast mechanism 300 distances air outlet 430 positions far away, therefore, end 220 is set to streamlined, makes that the wind speed at diverse location place of air outlet 430 is more even.In addition, more even for the wind speed at the diverse location place that makes air outlet 430, can two or more Blast mechanisms 300 be set according to concrete needs.The number of Blast mechanism 300 can be provided with by the user flexibly according to concrete instructions for use.
The cold wind knife system 100 of a kind of TPU blown film equipment of the present utility model, 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 utility model, 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.
Blast mechanism 300 is arranged on wind chamber 200 1 sides usually, distance between the diverse location of Blast mechanism 300 and air outlet 430 is also just different, thereby make easily and the near position of Blast mechanism 300 distances, then wind speed is bigger, then wind speed is less apart from Blast mechanism 300 distances air outlet 430 positions far away, therefore, end 220 is set to streamlined, makes that the wind speed at diverse location place of air outlet 430 is more even.
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 utility model, 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 the explanation the technical solution of the utility model but not to the restriction of the utility model protection domain; although the utility model 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 the technical solution of the utility model, and not break away from the essence and the scope of technical solutions of the utility model.

Claims (6)

1. 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.
2. TPU blown film equipment according to claim 1 is characterized in that:
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 and fixedlys connected with the opening of described end respectively.
3. TPU blown film equipment according to claim 2, it is characterized in that: described end is set to streamlined end.
4. according to claim 2 or 3 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.
5. TPU blown film equipment according to claim 4 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.
6. TPU blown film equipment according to claim 5 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.
CN2010202491289U 2010-03-08 2010-03-08 TPU film blowing equipment Expired - Lifetime CN201712174U (en)

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CN2010202491289U CN201712174U (en) 2010-03-08 2010-03-08 TPU film blowing equipment

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CN201020125396XU Division CN201587116U (en) 2010-03-08 2010-03-08 Cold air knife device of TPU film blowing equipment

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CN201712174U true CN201712174U (en) 2011-01-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110561733A (en) * 2012-08-07 2019-12-13 莱芬豪舍机械制造两合公司 Film blowing apparatus, method of producing film blowing tape, and film produced using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110561733A (en) * 2012-08-07 2019-12-13 莱芬豪舍机械制造两合公司 Film blowing apparatus, method of producing film blowing tape, and film produced using the same

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