CN1562701A - Continuous thermal sealing device for reinforcing tape - Google Patents
Continuous thermal sealing device for reinforcing tape Download PDFInfo
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- CN1562701A CN1562701A CN 200410007961 CN200410007961A CN1562701A CN 1562701 A CN1562701 A CN 1562701A CN 200410007961 CN200410007961 CN 200410007961 CN 200410007961 A CN200410007961 A CN 200410007961A CN 1562701 A CN1562701 A CN 1562701A
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- heat seal
- roller
- stiffening band
- heat
- band continuous
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Abstract
A continuous thermally sealing machine for the rinforcing band consisting plastic film and rreinforcing thread is composed of a thread unit which consists of supporting frame, inserted axle and plying device, and a thermally sealing unit which consists of supporting frame, plastic film releasing axle, tension roller, film separating device, reinforcing thread guiding and distributing device, thermal sealing device and band winder.
Description
Technical field
The present invention relates to a kind of machinery, is the continuous heat seal machine of a kind of production by the plastics stiffening band of dacron thread reinforcement specifically.
Background technology
Aerostat is the cheap high-altitude means of delivery of a kind of relative costs, the scientific observation instrument that it can carry hundreds of kilogram and even several tons of weights rises to the high-altitude of 30-40km, flight time was a couple of days to tens of days, can be used for multi-disciplinary scientific experiment and observational study.Because aerostat bulky (volume can reach hundreds thousand of cubic meters), buoyancy is extremely several tons of hundreds of kilograms, so require in light weight, the intensity height, the ball membrane material that uses can only be in 0.2 millimeter, because the thin intensity of covering material is limited, big or small needs tens to width of cloth plastic sheetings up to a hundred according to spheroid when making balloon are welded the edge, stiffening band is just paid for first in film edge and is therewith welded, stiffening band is under the situation of bearing pulling force fully after making balloon inflation, plastic sheeting only plays the choke effect, the power that is subjected to is but very little, has therefore guaranteed the light weight of balloon, the intensity height has been given full play to the advantage of aerostat.Show that according to test the structure of stiffening band is the most favourable with the composite reinforcing bands that plastic sheeting and dacron thread composite material constitute, and still, does not now also have a kind of equipment of automation to produce this stiffening band.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing machine of stiffening band, promptly a kind of stiffening band continuous heat seal machine, this heat-sealing machine can be produced the stiffening band of different size continuously, has the high advantage of degree of automation.
Stiffening band continuous heat seal machine provided by the invention comprises guide frame mechanism and heat device, and guide frame mechanism comprises that many rows install the slotting axle formation that the dacron thread beam barrel is used on support and the support, makes the multifilament stranding device of synthetic strand of many dacron threads on support in addition; Described heat device comprises the heat device support, the plastic sheeting dispensing shaft is installed on the heat device support, the dispensing shaft downstream position is equipped with the branch film device that makes the slack-free tension wheel of film and film is separated, be equipped with slurry terylene tow in minute film device downstream bits and be directed to seal wire distribution device between the double-layer films, seal wire distribution device downstream position is equipped with to be made, film heat seal heat seal device together, the heat seal device downstream position is equipped with the product Scroll, and the product Scroll is by motor-driven.
Described heat seal device can be the blowing hot wind welder, also can be heat combined roller mechanism, and heat combined roller mechanism has the electric roller of electric heating device and a pressure roll to constitute by an inside.
Described electric roller outside face is poly-PTFE, and inside is wound with heating wire, and the electric slip ring on heating wire and the electric heating roll shaft electrically connects.
Described pressure roll is made of a round roller and pressure arm, and circle roller outside face has the silastic material layer, and the circle roller is installed on the pressure arm, and pressure arm is made by a pair of connecting rod mechanism that is installed on the heat device support.
Described connecting rod mechanism can comprise the connecting rod of " L " shape, described manometric head is installed on the bar head that makes progress of " L " shape connecting rod by plus-minus screw, another bar head is hinged on the heat device support, a leg-of-mutton small end is hinged with the right angle corner place of " L " shape connecting rod, another summit of delta link is hinged on the described heat device support by a flap, when the hinge-point of the hinge-point at flap two ends and leg-of-mutton small end was on the line, connecting rod mechanism was pressed on the described heat seal head manometric head.
In described heat seal device downstream cooling mechanism can also be arranged.Described cooling mechanism can be one or more cooling running rollers or fan, and its preferable mode is made up of cooling running roller and a fan, is cooled after making stiffening band after the heat seal pass through this cooling running roller and cold wind.
At described heat seal device downstream position cutter sweep can also be arranged.Described cutter sweep can be made of cutter, and its preferable a kind of mode is a kind of combined tool, is made of an axle, blade and a plurality of axle sleeve, and axle sleeve is through on the axle, and described blade is sandwiched in the place, slit between the axle sleeve.Described blade can also can be multi-disc for a slice, so that the heat seal band is divided into two or many, or carries out deburring and handles.
Seal wire distribution device on the described heat device can be made of the godet roller that a upper surface has the tabular seal wire distribution plate of many valley gutters and has an annular seal wire groove.Can certainly be the guide wire apparatus of other form, for example have the device of a plurality of pilot holes.
Multifilament stranding device on the described guide frame can be a plurality of annulus, also can be a plurality of circular holes, its best mode is to be made of two ceramic wafer and two rollers that have many annular ditch grooves that have a plurality of wire holes, and the dacron thread on the guide frame passes behind the ceramic wafer and synthetic required terylene tow behind the groove on the roller.
This stiffening band continuous heat seal machine of the present invention, can produce the stiffening band that is combined into by two layers of plastic thin films and multi beam polyster fibre silk, have degree of automation height, characteristics easy to use, its heat-seal temperature is constant, heat sealing quality is good, the production quantity automatically setting, stiffening band that can the production plurality of specifications.
Description of drawings
Fig. 1 is a kind of better embodiment block diagram of the stiffening band continuous heat seal machine of invention;
Fig. 2 is a multifilament stranding device block diagram in the guide frame mechanism;
Fig. 3 is the opposite side three-dimensional structure diagram of heat device;
Fig. 4 is the pressure roll structural perspective of heat device;
Fig. 5 is the block diagram of cutter sweep;
Fig. 6 is heat-seal temperature Principles of Regulation scheme drawings;
Fig. 7 is the control circuit principle schematic;
Fig. 8 is the principle of work scheme drawing of stiffening band continuous heat seal machine of the present invention.
The specific embodiment
Be described further below in conjunction with the structure of the drawings and specific embodiments stiffening band continuous heat seal machine of the present invention.
As shown in Figure 1, a stiffening band continuous heat seal machine guide frame mechanism 1 of packing of the present invention and a heat device 2.Guide frame mechanism 1 assigns the slotting axle of dacron thread beam barrel 11 usefulness (not shown by the many rows that are installed on the support 10, its structure is a circular shaft) and the multifilament stranding device 12 of support upper end constitute, the slotting axle of installation dacron thread beam barrel 11 determines according to the quantity of the dacron thread that the stiffening band of being produced is used, can increase and decrease as required, for example be 264,264 dacron threads can be installed.There are a plurality of parallel horizontal girds 13 support 10 both sides, the circular hole (not shown) that the columns of the dacron thread axle on Liang Shangyou and the support equates.As shown in Figure 2, a top of the trellis has two guiding rollers 15 that have 8 annular guide groove 14, and the multifilament stranding device of two round-meshed ceramic wafers (omitting among the figure) formation.The dacron thread of same row passes behind the circular hole on the crossbeam 13 synthetic a branch of, form 8 strands through 14 backs of 8 annular grooves on two guiding rollers 15 after two round-meshed plying ceramic wafer guiding of the dacron thread of synthetic bundle through cantilever tip, certainly, the annular groove 14 on the guiding roller 15 can increase and decrease as required.
Heat device structure such as Fig. 1, Fig. 3 are to shown in Figure 7; at heat device support 20 middle parts two plastic sheeting dispensing shafts 21 are arranged, can certainly adopt a dispensing shaft, dispensing shaft is used for adorning the double-plastic volume; adopt two dispensing shafts to make that change of lap is more convenient in the production process, need not shut down.Above dispensing shaft 21, there are three rollers 22 to constitute tension wheel mechanisms, film unfolded and in addition certain slack-free purpose of pulling force by film is reached on the roller 22.There is a pair of positioning and guiding roller 23 tension wheel mechanism top, positioning and guiding roller 23 middle part diameters are less, form a shallow slot consistent (omitting among the figure), film is positioned in the shallow slot of guiding roller 23, film is prevented the film sideslip by lateral confinement with used thin-film width.The a pair of branch film device that is made of thin roller 24 is arranged behind positioning and guiding roller 23, make from the film that comes out between a pair of guiding roller 23 and behind undue film device, separate.Behind minute film device thread guide mechanism is installed, thread guide mechanism is made of two godet rollers 25 that have cannelure, can certainly adopt the guide wire apparatus of band circular hole, for example annulus or round-meshed thread plate.Filament winding makes bunchy in the circular groove 25 ' of godet roller 25 unlikely the scattering of silk taken turns in washing of bunchy.In order to make the dacron thread tensioning, there is therebetween that a pair of clamping plate 26 of felt are arranged in godet roller 25 1 sides, dacron thread is sandwiched between the clamping plate 26 by felt, friction force when passing felt to increase dacron thread, make the dacron thread tensioning, the dacron thread of maintenance heat seal in plastic sheeting can be stressed even, guarantees the intensity of stiffening band.Be equipped with a lower film guiding and a slack-free guide roller 27 that makes bilayer film in downstream bits, guide roller 27 tops are equipped with a seal wire distribution plate 28, the seal wire distribution plate is an one flat plate, has the oblique seal wire groove 28 ' that passes the terylene tow and it is drawn close to the middle part on the flat board.Behind seal wire distribution plate 28, there is one to make last slice film Live roller 29 that passes through and the guide roller 30 that dacron thread is passed through.Behind the guiding roller 30 be one and close tight roller 31, make two films and dacron thread by this roller and turn to following time to lump together.At middle part, support 20 sides is heat seal device, heat seal device is made of electric roller 32 and pressure roll that an inside is wound with 11.4 Ω heating wire, electric roller 32 in-to-in electric heating elements with the axle on electric slip ring 33 be communicated with, with the copper braid 34 of power supply electrical communication on the electric slip ring 33 to switch on to electric heating element, electric roller 32 outside faces are sprayed with poly-tetrafluoro sprayed coating, when preventing heat seal and the plastic sheeting adhesion.Heating wire rated current 7A, through adding the 21V vdc, electric roller 32 outer sheath temperature can reach 130 °; Pressure roll is made of pressure apparatus and a manometric head, manometric head is that an outside face is surrounded by outer field roller 35 formations of silaatic, make the two layers of plastic thin films heat seal together so that plastic sheeting and dacron thread are pressed to electric roller 32, and the bubble in the plastic sheeting is pushed away; Pressure apparatus is a four-bar linkage, four-bar linkage is a symmetrical mechanism, the connecting rod 36 that comprises " L " shape, described manometric head 35 is installed on the bar head of " L " shape connecting rod 36 by plus-minus screw 37, another bar head is hinged on the adapter plate 40 of frame 20, leg-of-mutton connecting rod 38 upper ends are hinged with the right angle corner place of " L " shape connecting rod 36, delta link 38 another summits are hinged on the adapter plate 40 by a flap 39, dead center position by mechanism contacts as the pressure of regulating film, make and form application force and antagonistic force between heat combined roller 32 and the manometric head 35, film is subjected to warm-up mill 32 suitable temperature and adds the hot extrusion molding hot synthetic type under this pressure, because the heat fusion joint of dacron thread is than the heat fusion joint height of film, so under the situation that film heat seal is connected firmly, still can freely stretch in the occupied space of dacron thread, this is the critical function during stiffening band is made.A chill roll 41 and an electric fan 42 are arranged, so that the cooling of the stiffening band after the heat seal under heat seal device.A cutter sweep is arranged under electric fan 42, cutter sweep comprises an axle 43, be with a plurality of axle sleeves 44 on the axle 43, between suitable axle sleeve slit, accompany three blades 45, so that the stiffening band after the heat seal is divided into the stiffening band of required width, this structure can be adjusted the position of blade and quantity easily.Be equipped with upper and lower guiding roller 46,47 and wrap-up in the cutter sweep downstream bits, wrap-up is an axle 48, and the motor (omitting among the figure) that is installed in heat device frame 20 bottoms drives Scroll 48 by driving chain, and motor drives guiding roller 46 simultaneously.
Constant and convenient adjustment for the heat-seal temperature that guarantees heat combined roller, heat device also has a temperature control equipment.As shown in Figure 6, be positioned at the heat combined roller rear portion infrared pickoff 60 that a model is arranged is MID02LT on support, red place sensor 60 is connected with the input of the PID controller 61 that a model is XSC/A-H, and the power lead of electric roller 32 is connected on the PID controller 61.The 220V power supply is adjusted to the power end that is connected on PID controller 61 behind the 56V by a pressure regulator 62.The advantage of measuring a heat seal electric roller 32 surface temperatures with infrared pickoff 60 is no touch, precision height, reaction soon.Can certainly adopt platinum resistance formula temperature sensor, imbed platinum resistance in the heat seal electric roller or be placed on the electric roller surface, this thermometric mode is not suitable for the Measuring Object surface temperature, and the survey precision of platinum resistance is low, the reaction slow.The PID controller is a kind of existing controller, uses intelligent temperature control, its advantage to be that control accuracy height, control current are steady.When temperature during near setting value, electric current can reduce automatically.When arriving setting value, can keep certain electric current automatically according to a heat seal electric roller heat-dissipation speed, so controlled temperature traverse is very little.Can certainly adopt other temperature control mode, for example adopt on-off mode, its shortcoming is that temperature-controlled precision is low, heating current is pulsed, and when temperature surpassed setting value, switch disconnected, and electric current is zero.And temperature is when being lower than setting value, and switch connection, electric current are maximum.The result is that a heat seal temperature overshot is very big, and the unsuitable accuracy control of temperature is bigger to the loss of instrument.
Stiffening band continuous heat seal machine also has a control circuit; as shown in Figure 7; the power supply that is connected with two pole switch HK and thermal cut-off RD is connected with the voltage transformer input coil by normally open contact JZ2; a power winding of voltage transformer is parallel with a normally open contact JZ4 and a normally closed interlock JZ5; normally open contact JZ4 connects with the start indicator lamp, and normally closed interlock JZ5 is connected with halt indicator.Another power winding of voltage transformer is connected with a photelectric receiver 71 with a light-emitting diode 70 by behind the bridge shape rectifying circuit, and photelectric receiver 71 is connected with relay J S.Also be connected with a relay J Z between the power supply, with the series connected open contact JZ3 of relay J Z with one often to open button A2 in parallel, a normally closed button A1 connects with relay J Z.The input end of a pressure regulator L1 electrically connects with power unit after being in series with open contact JZ1 and hot protective relay RJ, and the mouth of pressure regulator L1 is connected with motor D J by bridge shape rectifying circuit ZL.Axle head at last guiding roller 46 is fixed with a pair of resistance mating plate (not shown), and above-mentioned light-emitting diode 70 and photelectric receiver 71 are installed in resistance mating plate both sides.
In conjunction with shown in Figure 8, its principle of work is as follows, and the HK that closes a switch presses and often opens button A2, and relay J Z coil electricity makes contact JZ1 closure, and motor D J energising is moving to be changeed, and last guiding roller 46 and Scroll 48 rotate, and drive film and dacron thread and advance.Simultaneously, normally open contact JZ2, JZ4 closure, the start indicator lamp is bright.This moment, light-emitting diode 70 was luminous, last guiding roller 46 is being with the resistance mating plate to rotate, the light that light-emitting diode 70 is sent is hindered mating plate and covers or see through, photelectric receiver 71 is received the pulsed optical signal, produce pulse current, the energising outage that relay J S is not stopped, actuation counter (is omitted among the figure, this counting machine is a prior art) count, with the processing capacity of metering stiffening band.
When Scroll 48 rotates, double-plastic 100 on the pulling let off roll 21 rotates and unreels, film 100 is tensioned after by tension wheel mechanism, after positioning and guiding mechanism guiding, it is two-layer up and down stably by a minute film roller 24 double-layer films to be divided into, one deck is process above seal wire distribution plate 28, another the layer by seal wire distribution plate 28 below by; Simultaneously, dacron thread 200 on the dacron thread beam barrel of guide frame mechanism is not through multifilament stranding device synthetic 8 strands (may be 8 strands also), through making 8 bundle dacron threads behind godet roller 25 in the seal wire distributor gears on the heat device and the clamping plate 26 in the seal wire control apparatus by evenly tensioning, effect by seal wire distribution plate 28 is selected to arrange from film two side direction middle part, is clipped in the middle by double-layer films and makes plying dacron thread clamping location through closing tight roller 31 backs.Film 100 and 8 strands of dacron threads 200 are clamped by heat combined roller 32 and manometric head 35, heat combined roller 32 are heated and constant temperature by temperature control equipment, and double-layer films is heated together and sticked together with being heated evenly.Film after the heat seal and dacron thread are after the cold wind cooling of chill roll 41 and electric fan 42, the blade 45 of device to be cut cuts into the stiffening band of two required width, neat in edge, turn to the back by on Scroll 48 by last guiding roller 46, simultaneously the waste product leftover pieces at the edge that cuts down are exported downwards by lower steering roll 47.Infrared pickoff 60 records heat combined roller 32 surface temperatures and is input to PID controller 61, and PID controller 61 is adjusted the electric current of heat combined roller electric heating element according to the variation of heat combined roller 32 surface temperatures, makes heat combined roller 32 surface temperatures keep stable.Press normally closed button A1, relay J Z outage, contact JZ1, JZ2, JZ4 outage, motor D J shuts down.
Claims (10)
1, a kind of stiffening band continuous heat seal machine, it is characterized in that: comprise guide frame mechanism and heat device, guide frame mechanism comprises that many rows install the slotting axle formation that the dacron thread beam barrel is used on support and the support, makes the multifilament stranding device of synthetic strand of many dacron threads on support in addition; Described heat device comprises the heat device support, the plastic sheeting dispensing shaft is installed on the heat device support, the dispensing shaft downstream position is equipped with the branch film device that makes the slack-free tension wheel of film and film is separated, be equipped with in minute film device downstream bits the terylene tow is directed to seal wire distribution device between the double-layer films, seal wire distribution device downstream position is equipped with to be made, film heat seal heat seal device together, the heat seal device downstream position is equipped with the product Scroll, and the product Scroll is by motor-driven.
2, stiffening band continuous heat seal machine as claimed in claim 1, it is characterized in that: described heat seal device has the electric roller of electric heating device and a pressure roll to constitute by an inside, described electric roller outside face is poly-PTFE, inside is wound with heating wire, and the electric slip ring on heating wire and the electric heating roll shaft electrically connects.
3, stiffening band continuous heat seal machine as claimed in claim 2, it is characterized in that: described pressure roll is made of a round roller and pressure arm, circle roller outside face has the silastic material layer, the circle roller is installed on the pressure arm, and pressure arm is made by a pair of connecting rod mechanism that is installed on the heat device support.
4, stiffening band continuous heat seal machine as claimed in claim 3, it is characterized in that: described connecting rod mechanism comprises the connecting rod of " L " shape, described manometric head is installed on the bar head that makes progress of " L " shape connecting rod by plus-minus screw, another bar head is hinged on the heat device support, a leg-of-mutton small end is hinged with the right angle corner place of " L " shape connecting rod, another summit of delta link is hinged on the described heat device support by a flap, when the hinge-point of the hinge-point at flap two ends and leg-of-mutton small end was on the line, connecting rod mechanism was pressed on the described heat seal head manometric head.
5, stiffening band continuous heat seal machine as claimed in claim 1 is characterized in that: in described heat seal device downstream cooling mechanism is arranged, is made up of cooling running roller and a fan, be cooled after making stiffening band after the heat seal pass through this cooling running roller and cold wind.
6, stiffening band continuous heat seal machine as claimed in claim 1, it is characterized in that: also have cutter sweep at described heat seal device downstream position, described cutter sweep is made of an axle, blade and a plurality of axle sleeve, and axle sleeve is through on the axle, and described blade is sandwiched in the place, slit between the axle sleeve.
7, stiffening band continuous heat seal machine as claimed in claim 1 is characterized in that: the godet roller that the seal wire distribution device on the described heat device has the tabular seal wire distribution plate of many valley gutters by a upper surface and has an annular seal wire groove constitutes.
8, stiffening band continuous heat seal machine as claimed in claim 1 is characterized in that: the multifilament stranding device on the described guide frame is made of two ceramic wafer and two rollers that have many annular ditch grooves that have a plurality of wire holes.
9, stiffening band continuous heat seal machine as claimed in claim 2, it is characterized in that: described heat device also comprises a temperature control equipment, temperature control equipment is made of infrared pickoff that is positioned at the heat combined roller rear portion and PID controller, red place sensor is connected with the input of PID controller, and the power lead of described electric roller is connected on the PID controller.
10; stiffening band continuous heat seal machine as claimed in claim 1; it is characterized in that: described heat device also comprises control circuit; control circuit comprises and power supply bonded assembly voltage transformer; a power winding of voltage transformer is parallel with a normally open contact and a normally closed interlock; normally open contact is connected with the start indicator lamp; normally closed interlock is connected with halt indicator; another power winding of voltage transformer is connected with a photelectric receiver with a light-emitting diode by behind the bridge shape rectifying circuit; photelectric receiver is connected with relay J S; also be connected with a relay J Z between the power supply; with the series connected open contact JZ3 of relay J Z with one often to drive button in parallel; a normally closed button is connected with relay J Z; the input end of a pressure regulator L1 electrically connects with power unit after being in series with open contact JZ1 and hot protective relay RJ; the mouth of pressure regulator L1 is connected with motor D J by bridge shape rectifying circuit; axle head at a roll shaft of heat device is fixed with a pair of resistance mating plate, and above-mentioned light-emitting diode and photelectric receiver are installed in resistance mating plate both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410007961 CN1248843C (en) | 2004-03-17 | 2004-03-17 | Continuous thermal sealing device for reinforcing tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410007961 CN1248843C (en) | 2004-03-17 | 2004-03-17 | Continuous thermal sealing device for reinforcing tape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1562701A true CN1562701A (en) | 2005-01-12 |
| CN1248843C CN1248843C (en) | 2006-04-05 |
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ID=34477664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410007961 Expired - Fee Related CN1248843C (en) | 2004-03-17 | 2004-03-17 | Continuous thermal sealing device for reinforcing tape |
Country Status (1)
| Country | Link |
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| CN (1) | CN1248843C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987509A (en) * | 2011-10-07 | 2014-08-13 | I·M·A·工业机械自动装置股份公司 | Device to preheat tape and connected method of application |
| CN107411209A (en) * | 2016-05-10 | 2017-12-01 | Juki株式会社 | Temperature-detecting device and bonder |
| CN107983605A (en) * | 2017-11-30 | 2018-05-04 | 东台市环球塑料制品有限公司 | A kind of heatable plastic film device |
| CN111605693A (en) * | 2020-06-05 | 2020-09-01 | 燕山大学 | High-altitude balloon dispensing device |
| CN113954432A (en) * | 2021-09-18 | 2022-01-21 | 董宣 | Plastic film heat-sealing machine |
| CN116691001A (en) * | 2023-06-09 | 2023-09-05 | 中国科学院空天信息创新研究院 | Continuous heat sealing machine for processing high-altitude balloon reinforcing belt |
-
2004
- 2004-03-17 CN CN 200410007961 patent/CN1248843C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987509A (en) * | 2011-10-07 | 2014-08-13 | I·M·A·工业机械自动装置股份公司 | Device to preheat tape and connected method of application |
| CN107411209A (en) * | 2016-05-10 | 2017-12-01 | Juki株式会社 | Temperature-detecting device and bonder |
| CN107983605A (en) * | 2017-11-30 | 2018-05-04 | 东台市环球塑料制品有限公司 | A kind of heatable plastic film device |
| CN111605693A (en) * | 2020-06-05 | 2020-09-01 | 燕山大学 | High-altitude balloon dispensing device |
| CN111605693B (en) * | 2020-06-05 | 2023-01-17 | 燕山大学 | High-altitude balloon dispensing device |
| CN113954432A (en) * | 2021-09-18 | 2022-01-21 | 董宣 | Plastic film heat-sealing machine |
| CN116691001A (en) * | 2023-06-09 | 2023-09-05 | 中国科学院空天信息创新研究院 | Continuous heat sealing machine for processing high-altitude balloon reinforcing belt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1248843C (en) | 2006-04-05 |
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Granted publication date: 20060405 Termination date: 20130317 |