CN106927296A - A kind of polytetrafluoroethylene (PTFE) low-density film stretching device and preparation method - Google Patents
A kind of polytetrafluoroethylene (PTFE) low-density film stretching device and preparation method Download PDFInfo
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- CN106927296A CN106927296A CN201710333905.4A CN201710333905A CN106927296A CN 106927296 A CN106927296 A CN 106927296A CN 201710333905 A CN201710333905 A CN 201710333905A CN 106927296 A CN106927296 A CN 106927296A
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- polytetrafluoroethylene
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
- B65H26/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs for variation in tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
- B65H18/10—Mechanisms in which power is applied to web-roll spindle
- B65H18/103—Reel-to-reel type web winding and unwinding mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/032—Controlling transverse register of web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/19—Specific article or web
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The present invention relates to a kind of polytetrafluoroethylene (PTFE) low-density film stretching device and preparation method.The invention belongs to polytetrafluoroethylene film technical field.Polytetrafluoroethylene (PTFE) low-density film stretching device, including unreeling machine, baking oven and winder；Oven interior is provided with roller, and stretch section is heating type roller with the roller of sizing section, and stretch section is stretched using two stretching rollers to polytetrafluoroethylene (PTFE) low-density film；Winder is provided with governing mechanism of tension, realizes tension force full-automatic regulation.Polytetrafluoroethylene (PTFE) low-density film stretches preparation method：Unreeled since on unreeling machine, by low-temperature defatted case and high temperature degreasing case, by the solvent naphtha removing in base band, then go through stretching case, it is stretched after, polytetrafluoroethylene (PTFE) low-density film enters into shaping box, it is shaped using higher temperature, winder harvest a roll twining package tape.The present invention has simple structure, and precise control, production efficiency is high, and economical and practical, process is simple is easy to operate, the advantages of applied widely.
Description
Technical field
The invention belongs to polytetrafluoroethylene film technical field, more particularly to a kind of polytetrafluoroethylene (PTFE) low-density film draws
Stretch device and preparation method.
Background technology
Polytetrafluoroethylene (PTFE) (PTFE) resin is a kind of special engineering plastics with Good All-around Property, is had " King "
Good reputation.It has broad temperature in use (long-term use temperature is between -180~+250 DEG C), and the chemical stability of height is tall and erect
Electrical insulating property more, preferable antistick characteristic, outstanding self lubricity, with long-term resistance to weathering, good noninflammability
With the various excellent properties such as moderate pliability.At present, polytetrafluoroethylene (PTFE) low-density film is widely used to Aero-Space, state
The numerous areas such as anti-armament, petrochemical industry, electronic apparatus, communications and transportation, machinery, the energy, building, weaving, food, medicine.It is existing
With the presence of production equipment complex structure, control is inaccurate, low production efficiency, operation inconvenience, poor product quality, Density inhomogeneity phenomenon
The problems such as.
The content of the invention
The present invention provides a kind of polytetrafluoroethylene (PTFE) low-density film to solve technical problem present in known technology and draws
Stretch device and preparation method.
The present invention can improve the quality of low-density film, and the Density inhomogeneity that elimination film is produced in process of production shows
As, and the film of different densities can be produced according to production needs.
Polytetrafluoroethylene (PTFE) low-density film production equipment：Including unreeling machine, baking oven, winder；It is characterized in that：The baking oven
Internal roller employs brand-new layout, and the roller of stretch section and sizing section can be heated, and each roller that can heat
There is each single a set of temperature control system；Stretch section is stretched using two draw rolls to PTFE films, Er Qiela
Stretch roller speed ratio can step-less adjustment, cornerite of the thinfilms on draw roll reach 210 °.
Winder includes tension adjustment portion and correction part, tension adjustment portion.Winding tension full-automatic regulation, by two
Branch STS-30 tension sensors go to determine the tension force of PTFE films, are contrasted with setting tension force, and by comparing result with signal
Form feed back on the full tension force instrument of SC-2H types, voltage is adjusted to the frequency of frequency converter by changing output, so as to it
The purpose of regulation winding tension can be reached.
Correction part：Whole rolling frame can be moved, by photoelectric error correction device device by four roller bearings on guide rail
Promote the machinery of winding machine frame movement to perform with one, correction executing mechanism by ac synchronous motor, leading screw, leading screw sleeve,
Support etc. is constituted, and the traction to PTFE films is completed using these, and deviation when amendment film runs moves winding support
It is dynamic, keep film edge neat, wherein, photoelectric error correction is arranged by the way of two optoelectronic switches are staggered 1mm side by side.
An object of the present invention is to provide one kind has simple structure, and precise control, production efficiency is high, economical and practical,
Long service life, polytetrafluoroethylene (PTFE) low-density film stretching device the features such as easy to operate.
Polytetrafluoroethylene (PTFE) low-density film stretching device of the present invention is adopted the technical scheme that：
A kind of polytetrafluoroethylene (PTFE) low-density film stretching device, is characterized in：Polytetrafluoroethylene (PTFE) low-density film stretching dress
Put unreeling machine, baking oven and winder including setting gradually；Oven interior is provided with roller, and stretch section is to add with the roller of sizing section
Warm formula roller, stretch section is stretched using two stretching rollers to polytetrafluoroethylene (PTFE) low-density film, and thinfilms are in stretching
Cornerite on roller is 190-250 °；Winder is provided with governing mechanism of tension, and governing mechanism of tension includes tension sensor, tension force control
Instrument processed, frequency converter, tension sensor connection tension force instrument, the frequency of tension force instrument control frequency converter adjust voltage realization
Tension force full-automatic regulation.
Polytetrafluoroethylene (PTFE) low-density film stretching device of the present invention can also be adopted the following technical scheme that：
Described polytetrafluoroethylene (PTFE) low-density film stretching device, is characterized in：Unreeling machine is equipped with tension controller, unreels
When film keep smooth, tension controller control tension force 0.5-1N/m.
Described polytetrafluoroethylene (PTFE) low-density film stretching device, is characterized in：The heating type roller of stretch section and sizing section
Cylinder, each individually there is a set of temperature control device, and the speed ratio for stretching roller is step-less adjustment.
Described polytetrafluoroethylene (PTFE) low-density film stretching device, is characterized in：Winder is provided with deviation correction mechanism, rectification machine
Structure is made up of ac synchronous motor, leading screw, leading screw sleeve, support, and whole rolling frame, can be in guide rail by four roller bearings
Upper movement, is performed by photoelectric error correction device device and a machinery for promotion winding machine frame movement, and it is right to be completed using these
The traction of PTFE films, deviation when amendment film runs moves winding support, keeps film edge neat.
Described polytetrafluoroethylene (PTFE) low-density film stretching device, is characterized in：The tension sensor of winder is two
Determine the STS-30 tension sensors of PTFE films.
The second object of the present invention be to provide it is a kind of there is process is simple, easy to operate, precise control, production efficiency is high,
Long service life, polytetrafluoroethylene (PTFE) low-density film stretching preparation method the features such as applied widely.
Polytetrafluoroethylene (PTFE) low-density film stretching preparation method of the present invention is adopted the technical scheme that：
A kind of polytetrafluoroethylene (PTFE) low-density film stretches preparation method, is characterized in：Polytetrafluoroethylene (PTFE) low-density film draws
Stretching preparation method includes following technical process：Polytetrafluoroethylene (PTFE) low-density film is unreeled since on unreeling machine, de- by low temperature
Fat case and high temperature degreasing case, are acted synergistically using high/low temperature, by the solvent naphtha removing in base band, then go through stretching case, are drawn
Stretch stretching roller in case can step-less adjustment stretching ratio, it is stretched after, polytetrafluoroethylene (PTFE) low-density film enters into fixed
Molding box, is shaped using higher temperature to it, finally by winder by film harvest a roll PTFE twining package tapes.
Polytetrafluoroethylene (PTFE) low-density film stretching preparation method of the present invention can also be adopted the following technical scheme that：
Described polytetrafluoroethylene (PTFE) low-density film stretching preparation method, is characterized in：Low-temperature defatted case it is low-temperature defatted
Section, by three driven rollers and two guide roller groups into carrying out first time degreasing at a temperature of 160-200 DEG C；High temperature degreasing case
High temperature degreasing section, by five driven rollers and four guide roller groups into carrying out second degreasing under 220-280 DEG C of temperature case.
Described polytetrafluoroethylene (PTFE) low-density film stretching preparation method, is characterized in：Stretching is entered into after film degreasing
Case, draw roll temperature is controlled between 200-220 DEG C.
Described polytetrafluoroethylene (PTFE) low-density film stretching preparation method, is characterized in：Film after stretching enters into fixed
Molding box, shaping box is by five rollers and four guide roller groups equipped with heater into carrying out height under 280-350 DEG C of state of temperature
Temperature sizing.
Described polytetrafluoroethylene (PTFE) low-density film stretching preparation method, is characterized in：Enter winder after shaping film,
Rectified a deviation by deviation correction mechanism, correction has used two optoelectronic switches to be staggered side by side the arrangement mode of 0.8-1.5mm；Then by opening
Power controlling organization, reaches winding tension entire volume and is consistent.
The present invention has the advantages and positive effects that：
Polytetrafluoroethylene (PTFE) low-density film stretching device and preparation method as a result of the brand-new technical scheme of the present invention,
Compared with prior art, the present invention has simple structure, and precise control, production efficiency is high, economical and practical, long service life, work
Skill is simple and convenient to operate, the advantages of applied widely.
Brief description of the drawings
Fig. 1 is polytetrafluoroethylene (PTFE) low-density film stretching device overall structure diagram of the present invention；
Fig. 2 is the unreeling machine structural representation in Fig. 1；
Fig. 3 is the low-temperature defatted and high temperature degreasing oven structure schematic diagram in Fig. 1；
Fig. 4 is stretching and shaping baking oven structural representation in Fig. 1；
Fig. 5 is the winder structural representation in Fig. 1.
In figure, 1- tension controllers, 2- heating tubes, the low degreasing areas of 3-, 4- flues, 5- high temperature degreasings area, 6- drawing zones, 7-
Stretching heating roller, 8- sizing heating rollers, 9- shaping areas, 10- cooling blowers, 11- optoelectronic switches, 12- tension sensors, 13- arcs
Shape nip rolls, 14- ac synchronous motors, 15- sliding rails.
Specific embodiment
For the content of the invention of the invention, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinate accompanying drawing
Describe in detail as follows：
Refering to accompanying drawing 1 to Fig. 5.
Embodiment 1
A kind of polytetrafluoroethylene (PTFE) low-density film stretching device, including unreeling machine, baking oven and the winder for setting gradually；Dry
Roller is provided with inside case, stretch section is heating type roller with the roller of sizing section, and stretch section is using two stretching rollers to poly- four
PVF low-density film is stretched, and cornerite of the thinfilms on draw roll is 210 °；Winder is provided with tension adjustment machine
Structure, governing mechanism of tension includes tension sensor, tension force instrument, frequency converter, tension sensor connection tension force instrument, tension force
The frequency of controller control frequency converter realizes tension force full-automatic regulation adjusting voltage.
Unreeling machine is equipped with tension controller, and film keeps smooth when unreeling.The tension sensor of winder is two measure
The STS-30 tension sensors of PTFE films, tension controller control tension force 0.5-1N/m.
The heating type roller of stretch section and sizing section, each individually there is a set of temperature control device, stretches the speed of roller
Than being step-less adjustment.Winder is provided with deviation correction mechanism, and deviation correction mechanism is by ac synchronous motor, leading screw, leading screw sleeve, support group
Into whole rolling frame can be moved by four roller bearings on guide rail, and winding is promoted by photoelectric error correction device device and one
The machinery of machine frame movement is performed, and traction to PTFE films is completed using these, and deviation when amendment film runs makes receipts
Roll support is moved, and keeps film edge neat.
Embodiment 2
A kind of polytetrafluoroethylene (PTFE) low-density film stretches preparation method, including following technical process：Polytetrafluoroethylene (PTFE) is low close
Degree film is unreeled since on unreeling machine, by low-temperature defatted case and high temperature degreasing case, is acted synergistically using high/low temperature, by base band
Interior solvent naphtha removing, then goes through stretching case, the stretching roller in stretching case can step-less adjustment stretching ratio, by drawing
After stretching, polytetrafluoroethylene (PTFE) low-density film enters into shaping box, and it is shaped using higher temperature, finally by winder
By film harvest a roll PTFE twining package tapes.
Low-temperature defatted section of low-temperature defatted case, by three driven rollers and two guide roller groups into being carried out at a temperature of 180 DEG C
First time degreasing；The high temperature degreasing section of high temperature degreasing case, by five driven rollers with four guide roller groups into 250 DEG C of temperature works
Second degreasing is carried out under condition.Stretching case is entered into after film degreasing, draw roll temperature is controlled between 200-220 DEG C.Stretching
Film afterwards enters into shaping box, and shaping box is by five rollers and four guide roller groups equipped with heater into temperature 280-
High-temperature shaping is carried out under 350 DEG C of states.
Enter winder after shaping film, rectified a deviation by deviation correction mechanism, correction has used two optoelectronic switches to be staggered side by side
The arrangement mode of 0.8-1.5mm；Then by tension control mechanism, reach winding tension entire volume and be consistent.
The specific implementation process of the present embodiment：
1st, high density base band resulting after calendering is positioned on the unreeling shaft of unreeling machine, by packaging film feeding to lower road work
Sequence.When unreeling in order that film keeps smooth must keep certain tension force, tension controller is mounted with, tension force exists
In the range of 0.5-1N/m.
2nd, film enters low-temperature defatted section, and the section is by three driven rollers with two guide roller groups into 180 DEG C of temperature works
First time degreasing is carried out under condition.
3rd, film enters high temperature degreasing section, and the section is by five driven rollers with four guide roller groups into 250 DEG C of temperature works
Second degreasing is carried out under condition.Film can be effectively eliminated by degreasing twice high temperature is entered into because shrinking what is produced by normal temperature
Gauffer.
4th, stretching case is entered into after film degreasing, it is adjusted by original high-density state by the stretching action of draw roll
Section density of film, the size of density is determined by the fast ratio of draw roll.In order to ensure the uniformity of density of film, inside draw roll
Temperature is consistent on the membrane surface to have installed heater guarantee effect additional.Draw roll temperature is controlled between 200-220 DEG C.
5th, the film after stretched enters into shaping box, and shaping box is by five rollers and four guiding equipped with heater
Roller group under 280-350 DEG C of state of temperature into carrying out high-temperature shaping.
6th, deviation-rectifying system is first passed around into winding portion point after shaping film, to ensure that winding is neat, deviation-rectifying system is used
Two optoelectronic switches are staggered the arrangement mode of 1mm side by side, so can ensure the regularity of film one side kept well 1mm with
It is interior, reduce down the waste for cutting operation together；Then by tension control system, to ensure winding tension all the time always,
Force control system employs Full-automatic tension controller, and pressure detecting roller is provided with winding frame, but real-time monitoring winds
The change of tension force, after tension controller receives the numerical value of pressure detecting roller, compares the tension value of setting to winding variable-frequency motor
Change output percentage, can be consistent with entire volume so as to reach winding tension.
The present embodiment has described simple structure, and precise control, production efficiency is high, economical and practical, long service life, work
Skill is simple and convenient to operate, applied widely to wait good effect.
Claims (10)
1. a kind of polytetrafluoroethylene (PTFE) low-density film stretching device, it is characterized in that：Polytetrafluoroethylene (PTFE) low-density film stretching device
Including the unreeling machine, baking oven and the winder that set gradually；Oven interior is provided with roller, and stretch section is heating with the roller of sizing section
Formula roller, stretch section is stretched using two stretching rollers to polytetrafluoroethylene (PTFE) low-density film, and thinfilms are in draw roll
On cornerite be 190-250 °；Winder is provided with governing mechanism of tension, and governing mechanism of tension includes tension sensor, tension force
Instrument, frequency converter, tension sensor connection tension force instrument, the frequency of tension force instrument control frequency converter are realized opening adjusting voltage
Power full-automatic regulation.
2. polytetrafluoroethylene (PTFE) low-density film stretching device according to claim 1, it is characterized in that：Unreeling machine is equipped with tension force
Controller, film keeps smooth when unreeling, tension controller control tension force 0.5-1N/m.
3. polytetrafluoroethylene (PTFE) low-density film stretching device according to claim 1, it is characterized in that：Stretch section and sizing section
Heating type roller, each individually have a set of temperature control device, the speed ratio for stretching roller is step-less adjustment.
4. the polytetrafluoroethylene (PTFE) low-density film stretching device according to claim 1,2 or 3, it is characterized in that：Winder sets
There is deviation correction mechanism, deviation correction mechanism is made up of ac synchronous motor, leading screw, leading screw sleeve, support, whole rolling frame is by four rollings
Bearings, can move on guide rail, be performed by photoelectric error correction device device and a machinery for promotion winding machine frame movement, profit
The traction to PTFE films is completed with these, deviation when amendment film runs moves winding support, keeps film edge
Neatly.
5. the polytetrafluoroethylene (PTFE) low-density film stretching device according to claim 1,2 or 3, it is characterized in that：Winder
Tension sensor is two STS-30 tension sensors of measure PTFE films.
6. a kind of polytetrafluoroethylene (PTFE) low-density film stretches preparation method, it is characterized in that：Polytetrafluoroethylene (PTFE) low-density film is stretched
Preparation method includes following technical process：Polytetrafluoroethylene (PTFE) low-density film is unreeled since on unreeling machine, by low-temperature defatted
Case and high temperature degreasing case, are acted synergistically using high/low temperature, by the solvent naphtha removing in base band, then go through stretching case, are stretched
Stretching roller in case can step-less adjustment stretching ratio, it is stretched after, polytetrafluoroethylene (PTFE) low-density film enters into sizing
Case, is shaped using higher temperature to it, finally by winder by film harvest a roll PTFE twining package tapes.
7. polytetrafluoroethylene (PTFE) low-density film according to claim 6 stretches preparation method, it is characterized in that：Low-temperature defatted case
Low-temperature defatted section, by three driven rollers and two guide roller groups into carrying out first time degreasing at a temperature of 160-200 DEG C；It is high
The high temperature degreasing section of warm degreasing case, by five driven rollers and four guide roller groups into carrying out the under 220-280 DEG C of temperature case
Secondary degreasing.
8. polytetrafluoroethylene (PTFE) low-density film according to claim 6 stretches preparation method, it is characterized in that：After film degreasing
Stretching case is entered into, draw roll temperature is controlled between 200-220 DEG C.
9. the polytetrafluoroethylene (PTFE) low-density film according to claim 6,7 or 8 stretches preparation method, it is characterized in that：Stretching
Film afterwards enters into shaping box, and shaping box is by five rollers and four guide roller groups equipped with heater into temperature 280-
High-temperature shaping is carried out under 350 DEG C of states.
10. the polytetrafluoroethylene (PTFE) low-density film according to claim 6,7 or 8 stretches preparation method, it is characterized in that：Film
Enter winder after sizing, rectified a deviation by deviation correction mechanism, correction has used two optoelectronic switches to be staggered side by side the row of 0.8-1.5mm
Row mode；Then by tension control mechanism, reach winding tension entire volume and be consistent.
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| CN201710333905.4A CN106927296A (en) | 2017-05-12 | 2017-05-12 | A kind of polytetrafluoroethylene (PTFE) low-density film stretching device and preparation method |
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| CN201710333905.4A CN106927296A (en) | 2017-05-12 | 2017-05-12 | A kind of polytetrafluoroethylene (PTFE) low-density film stretching device and preparation method |
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Cited By (5)
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|---|---|---|---|---|
| CN107390727A (en) * | 2017-07-11 | 2017-11-24 | 深圳市新伟创实业有限公司 | A kind of calendered product method for controlling thickness and its device |
| CN109279419A (en) * | 2018-10-31 | 2019-01-29 | 广东仕诚塑料机械有限公司 | A kind of film take-up traction device |
| CN112571703A (en) * | 2020-11-17 | 2021-03-30 | 中国电子科技集团公司第四十六研究所 | Novel polytetrafluoroethylene raw substrate forming method |
| CN112607462A (en) * | 2020-12-22 | 2021-04-06 | 福建省骏旗机械工贸有限公司 | Polytetrafluoroethylene film drawing and slitting device and working method thereof |
| CN112936926A (en) * | 2019-12-10 | 2021-06-11 | 东莞先健新材料科技有限公司 | Polytetrafluoroethylene (PTFE) bulked film and preparation method thereof |
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| CN112607462A (en) * | 2020-12-22 | 2021-04-06 | 福建省骏旗机械工贸有限公司 | Polytetrafluoroethylene film drawing and slitting device and working method thereof |
| CN112607462B (en) * | 2020-12-22 | 2023-01-10 | 福建省骏旗机械工贸有限公司 | Polytetrafluoroethylene film drawing and slitting device and working method thereof |
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Application publication date: 20170707 |