CN101672942B - Production device of broad width PVA polarized light film - Google Patents
Production device of broad width PVA polarized light film Download PDFInfo
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- CN101672942B CN101672942B CN2009101527548A CN200910152754A CN101672942B CN 101672942 B CN101672942 B CN 101672942B CN 2009101527548 A CN2009101527548 A CN 2009101527548A CN 200910152754 A CN200910152754 A CN 200910152754A CN 101672942 B CN101672942 B CN 101672942B
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Abstract
The invention relates to a production device of a broad width PVA polarized light film. The prior processes and devices can not produce broad width PVA polarized light films. The production device of the broad width PVA polarized light film comprises a film fabrication device and a post treatment device; the film fabrication device comprises a stirring kettle, a liquid storage tank and a buffer slot which are connected in series through pipelines; a stainless steel conveyer belt of a track conveying device is arranged by penetrating an oven, and the rear part thereof is provided with a film fabrication heating roller group, a film fabrication setting roller group, a film fabrication traction device and a winding device; and the post treatment device comprises a primary solution tank, a post treatment heating roller group, a secondary solution tank, a post treatment setting roller group, a post treatment traction device and a winding device which are sequentially arranged; and two positioning rollers are arranged in the primary solution tank, and two stretching rollers are arranged in the secondary solution tank. In the production device of the broad width PVA polarized light film, the heating roller group, the setting roller group and the stretching rollers are heated by adopting oil medium; and the production device of the broad width PVA polarized light film has simple structure, accurate heating temperature and easy control of film thickness, and can realize the industrialization production and produce the broad width PVA polarized light films.
Description
Technical field
The invention belongs to the membrane technology field, be specifically related to a kind of production equipment of broad PVA polarized light film.
Background technology
At present, produce the longitudinal stretching process units of PVA polarization film and technology on the market seldom.Existing processes and equipment generally are applicable to the production of PVA polarization film in a narrow margin, and the production equipment of broad PVA polarized light film and technology are still blank.Along with applying of large-scale LCDs (more than 50 cun), the needs to broad PVA polarized light film on the market are more and more urgent.
Summary of the invention
Purpose of the present invention just provides a kind of production equipment of broad PVA polarized light film.
The present invention includes membrane equipment and equipment for after-treatment.
Described membrane equipment comprises stirred tank, fluid reservoir, dashpot, adjusting motor, track conveying device, baking oven, system film warm-up mill group, system film setting roll group, system film draw-gear.
The top of stirred tank is provided with charge door, the bottom is provided with discharging opening, the top of fluid reservoir is provided with charging aperture, the bottom is provided with liquid outlet, be disposed with one-level filter screen and secondary filter screen in the fluid reservoir from top to bottom, one-level filter screen and secondary filter screen are all horizontally disposed, and the order number of one-level filter screen is less than the order number of secondary filter screen.The discharging opening of stirred tank is connected with the discharging pipeline, and the outlet of discharging pipeline is corresponding with the charging aperture position of fluid reservoir, and the discharging pipeline is provided with the one-level discharge pump.Dashpot is rectangular bucket shape, and the top of dashpot is provided with inlet, and the bottom of dashpot is that bucket shape closes up, and dashpot bucket shape bottom is connected with the liquid outlet groove of strip.Regulating shaft passes the liquid outlet groove setting.Regulating shaft is attacked the opposite screw thread of direction with the liquid outlet groove for the both sides, center, and the power output shaft of regulating motor is connected with regulating shaft.The liquid outlet of fluid reservoir and the inlet of dashpot are by the fluid pipeline connection, and the fluid pipeline is provided with the two-stage conveying pump.Track conveying device comprises cycloconveyor belt and the driving wheel that is in series by hinge by corrosion resistant plate, and conveying belt passes the baking oven setting.One end of track conveying device is corresponding with the liquid outlet groove position, the other end is corresponding with first system film warm-up mill group position in 2～4 system film warm-up mill groups that be arranged in parallel, last system film warm-up mill group correspondence position is provided with system film setting roll group, and system film setting roll group is parallel with system film warm-up mill group.System film setting roll group rear is provided with system film draw-gear, and draw-gear adopts device commonly used in the thin film industry.
Described equipment for after-treatment comprises one-level solution tank, aftertreatment warm-up mill group, secondary solution tank, aftertreatment setting roll group, aftertreatment draw-gear and collecting device is set in order.Be provided with first deflector roll between one-level solution tank and the system film draw-gear.
The one-level solution tank is communicated with one-level fluid infusion groove, and the secondary solution tank is communicated with secondary fluid infusion groove.One-level registration roller and secondary registration roller are arranged in the one-level solution tank, and are on the same surface level, and the rotating speed of two registration rollers is identical.One-level draw roll and secondary drawing roller are arranged in the secondary solution tank, and are on the same surface level, and secondary drawing roller rotating speed is 1～9 times of one-level draw roll rotating speed.Be arranged with four the aftertreatment warm-up mill groups and second deflector roll between one-level solution tank and the secondary solution tank in parallel.Secondary solution tank rear is sequentially set with the 3rd deflector roll, two aftertreatment setting roll groups, aftertreatment draw-gear and collecting devices.
The structure of system film setting roll group, each system film warm-up mill group, each aftertreatment setting roll group and each aftertreatment warm-up mill group is identical, specifically: comprise oily medium warm-up mill and silicon rubber hold-down roller, wherein the surface of silicon rubber hold-down roller is heat-resisting silicon rubber layer, and silicon rubber hold-down roller two ends connect the Pneumatic pressure regulating device; Oil medium warm-up mill is a steel rider, have the oil pipe road near surface location in the steel rider, the hot oiling machine is communicated with, is communicated with oil pipe road in oily another side of medium warm-up mill by return line by the oil pipe road in side of in-line and oily medium warm-up mill, and in-line is provided with circular-pump.
One-level draw roll and secondary drawing roller all are to be made of a pair of roller, and this roller adopts steel rod, and the surface is heat-resisting silastic-layer, and type of heating adopts oily medium heating, and oil circuit is identical with oily medium warm-up mill.
Draw-gear among the present invention is a conventional machinery equipment with the Pneumatic pressure regulating device that collecting device and silicon rubber hold-down roller two ends are connected.
Structure of the present invention and technology are simple, particularly adopt oily medium heating, heating-up temperature is (positive and negative about 0.5 ℃) very accurately, the thickness of film is easy to control, easy suitability for industrialized production, produced at the bottom of the rejection rate, PVA polarized light film that can the production wide cut is for the LCD of producing large-scale wide cut creates conditions.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is oily medium heating synoptic diagram.
Embodiment
As shown in Figure 1, the production equipment of PVA polarization film comprises membrane equipment and equipment for after-treatment.
Membrane equipment comprises stirred tank 5, fluid reservoir 1, dashpot 8, adjusting motor 10, track conveying device 12, baking oven 13, system film warm-up mill group, system film setting roll group, system film draw-gear 18-1.
The top of stirred tank 5 is provided with charge door, the bottom is provided with discharging opening, the top of fluid reservoir 1 is provided with charging aperture, the bottom is provided with liquid outlet, be disposed with one-level filter screen 2-1 and secondary filter screen 2-2 in the fluid reservoir 1 from top to bottom, one-level filter screen 2-1 and secondary filter screen 2-2 are all horizontally disposed, and the order number of one-level filter screen is less than the order number of secondary filter screen.The discharging opening of stirred tank 5 is connected with discharging pipeline 4, and the outlet of discharging pipeline 4 is corresponding with the charging aperture position of fluid reservoir 1, and discharging pipeline 4 is provided with one-level discharge pump 3.Dashpot 8 is rectangular bucket shape, and the top of dashpot 8 is provided with inlet, and the bottom of dashpot 8 is that bucket shape closes up, and dashpot bucket shape bottom is connected with the liquid outlet groove 9 of strip, and the length of liquid outlet groove 9 is exactly the width of preparation film forming.Regulating shaft 11 passes liquid outlet groove 9 and is provided with.Regulating shaft 11 is that the opposite screw thread of direction is attacked on the both sides, center with liquid outlet groove 9, and the power output shaft of regulating motor 10 is connected with regulating shaft 11.The liquid outlet of fluid reservoir 1 is communicated with by fluid pipeline 7 with the inlet of dashpot 8, and fluid pipeline 7 is provided with two-stage conveying pump 6.Track conveying device 12 comprises cycloconveyor belt and the driving wheel that is in series by hinge by corrosion resistant plate, and conveying belt passes baking oven 13 and is provided with.One end of track conveying device 12 is corresponding with liquid outlet groove 9 positions, the other end is corresponding with first system film warm-up mill group position in three system film warm-up mill groups that be arranged in parallel, last system film warm-up mill group correspondence position is provided with system film setting roll group, and system film setting roll group is parallel with system film warm-up mill group.System film setting roll group rear is provided with system film draw-gear 18-1, and draw-gear adopts device commonly used in the thin film industry.
Equipment for after-treatment comprises one-level solution tank 21, aftertreatment warm-up mill group, secondary solution tank 28, aftertreatment setting roll group, aftertreatment draw-gear 18-2 and collecting device 32 is set in order.Be provided with first deflector roll 19 between one-level solution tank 21 and the system film draw-gear 18-1.
One-level solution tank 21 is communicated with one-level fluid infusion groove 20, and secondary solution tank 28 is communicated with secondary fluid infusion groove 26.One-level registration roller 22-1 and secondary registration roller 22-2 are arranged in the one-level solution tank 21, and are on the same surface level, and the rotating speed of two registration rollers is identical.One-level draw roll 27-1 and secondary drawing roller 27-2 are arranged in the secondary solution tank 28, and are on the same surface level, and secondary drawing roller 27-2 rotating speed is 1～9 times of one-level draw roll 27-1 rotating speed.Be arranged with four the aftertreatment warm-up mill groups and second deflector roll 25 between one-level solution tank 21 and the secondary solution tank 28 in parallel.Secondary solution tank 28 rears are sequentially set with the 3rd deflector roll 29, two aftertreatment setting roll groups, aftertreatment draw-gear 18-2 and collecting devices 32.
The structure of system film setting roll group, each system film warm-up mill group, each aftertreatment setting roll group and each aftertreatment warm-up mill group is identical, specifically: comprise oily medium warm-up mill 14-1,14-2,14-3,17-1,23-1,23-2,23-3,23-4,31-1,31-2 and silicon rubber hold-down roller 15-1,15-2,15-3,16-1,24-1,24-2,24-3,24-4,30-1,30-2, the surface of silicon rubber hold-down roller is heat-resisting silicon rubber layer, and silicon rubber hold-down roller two ends connect the Pneumatic pressure regulating device; Oil medium warm-up mill is a steel rider, have oil pipe road 33 near surface location in the steel rider, hot oiling machine 35 is communicated with, is communicated with by the interior oil pipe road 33 of return line 34 and oily another side of medium warm-up mill by the oil pipe road 33 in side of in-line 37 and oily medium warm-up mill, and in-line 37 is provided with circular-pump 36 (as Fig. 2).
One-level draw roll 27-1 and secondary drawing roller 27-2 are made of a pair of roller, and this roller adopts steel rod, and the surface is heat-resisting silastic-layer, and type of heating adopts oily medium heating (oil circuit of heating is identical with oily medium warm-up mill).
Utilize the process of this device fabrication broad PVA polarized light film as follows:
At first at a certain temperature according to a certain percentage with plastifier, stabilizing agent, modifier, surfactant and deionized water and polyvinyl alcohol (PVA) (PVA), putting into reactor fully stirs, mix, make sticking shape liquid, the PVA temperature is controlled between 70 ℃～90 ℃.The sticking shape liquid for preparing put by the one-level discharge pump send in the fluid reservoir, filter, the PVA macromolecular particle filtering that will not dissolve by the twice of one-level filter screen and secondary filter screen, make sticking shape liquid even, prevent to produce transparency, intensity, uneven substandard products PVA such as thickness film.Liquid is regulated the solubleness size of gluing shape liquid by the height of temperature-controlling system regulation and control solution temperature in fluid reservoir.
To glue shape liquid through the two-stage conveying pump again and all be transported to dashpot, and be flowed out on the stainless steel conveying belt of track conveying device by the liquid outlet groove of dashpot bottom, conveying belt is by gear drive and turn back, and auto-tensioning.According to the viscosity of PVA, the speed of crawler belt rotating speed is regulated the size of curtain coating gap, thereby controls out the requirements such as thickness that product PVA film will reach.Regulating the curtain coating gap is exactly the width that adjusts liquid bath, specifically be to utilize to regulate the rotation of driven by motor regulating shaft, when regulating shaft just changeed, regulating shaft shrank (being that the curtain coating gap reduces) with liquid outlet groove, when regulating shaft reversed, regulating shaft was with liquid outlet groove expansion (being that the curtain coating gap increases).
Track conveying device is sent the PVA casting films that flows out into baking oven for heating, according to the PVA resin raw material and water-solubility PVA viscosity difference, the corresponding change of control temperature of oven scope, general temperature all is controlled between 80 degrees centigrade to 150 degrees centigrade.After baking oven comes out, the PVA casting films that contains small amount of moisture is sent on the oily medium warm-up mill, wherein three oily medium warm-up mills of this that touches at first are to be used for heating the PVA casting films that contains small amount of moisture, and temperature generally is controlled between 80 degrees centigrade to 120 degrees centigrade.The pneumatic means that the silicon rubber hold-down roller is provided with together with two ends not only compresses the PVA film together with oily medium warm-up mill, and transmits the PVA film.Pressure between oil medium warm-up mill and the silicon rubber hold-down roller can be regulated and control, the pressure at silicon rubber hold-down roller two ends makes equal, if pressure does not wait, cause phenomenons such as PVA cast film sideslip and film uneven distribution, control the thickness of PVA film by the pneumatic means regulation and control pressure between them, the pneumatic means that silicon rubber hold-down roller two ends are provided with adopts routine techniques.The size of oil medium heating roller temperature is by the control of hot oiling machine, hot oiling machine, in-line, constituted the hot oiling unit by return line, circular-pump and oily medium warm-up mill.The PVA film that adds behind the heat abstraction moisture is delivered to equipment for after-treatment through thermal finalization, traction.
Under the normal temperature, KI and I are housed in the one-level solution tank
2Saturated solution, KI and I
2Weight ratio be 2～8: 1, with KI and the I of PVA film at normal temperature
2Invaded stain in the saturated solution 20～60 seconds,, I
2Just be adsorbed on the strand of PVA film fully with KI, one-level fluid infusion groove be used to regulate and additional one-level solution tank in KI and I
2Saturated solution.One-level registration roller and secondary registration roller are immersed in KI and I
2In the saturated solution, rotating speed is about 1.5m/min, and the center distance of two location deflector rolls guarantees that the PVA film is at KI and I between 500～1500mm
2Invaded stain in the saturated solution 20～60 seconds.
To adsorb I
2With four the aftertreatment warm-up mill groups of passing through of the PVA film of KI twice heating carried out on the two sides of PVA film, heating-up temperature is 45～55 ℃ for the first time, and heating-up temperature is 55～65 ℃ for the second time.
Sending into temperature through the PVA film after twice heating by deflector roll is that the PVA film stretches in the boric acid saturated solution 1～9 times in 55～65 ℃ the boric acid saturated solution.Thermal treatment can improve polarizing coating in the process that stretches wet-hot aging performance and thermal finalization, draw roll, BAS, PVA film keep stationary temperature during stretching.Can the rotating speed of the temperature of drawing machine, the front and back roller that stretches all directly has influence on stretching the PVA strand, forms grating, and the polarized light effect is arranged.
The PVA film carries out thermal finalization to the two sides of PVA film by after coming out in the boric acid saturated solution respectively by two aftertreatment setting roll groups, and heat setting temperature is 65～75 ℃.Through thermal finalization, fixedly macromolecular chain is avoided resilience, influences the polarization photosensitiveness and the grating of PVA film.
PVA film after the thermal finalization becomes finished product PVA polarization film through drawing, being wound into tube.The PVA polarization film produced is shaped through draw-gear and collecting device, and the fine setting haulage speed is controlled the wall thickness of PVA polarization film.Collecting device is controlled by frequency-changing control system, keeps being complementary with haulage speed by adjusting motor speed.Regulate winding tension with jockey pulley, make the inside and outside tensile force unanimity of every volume PVA polarization film.
Claims (1)
1. the production equipment of a broad PVA polarized light film comprises membrane equipment and equipment for after-treatment, it is characterized in that:
Described membrane equipment comprises stirred tank, fluid reservoir, dashpot, adjusting motor, track conveying device, baking oven, system film warm-up mill group, system film setting roll group, system film draw-gear;
The top of described stirred tank is provided with charge door, the bottom is provided with discharging opening, the top of described fluid reservoir is provided with charging aperture, the bottom is provided with liquid outlet, be disposed with one-level filter screen and secondary filter screen in the described fluid reservoir from top to bottom, one-level filter screen and secondary filter screen are all horizontally disposed, and the order number of one-level filter screen is less than the order number of secondary filter screen; The discharging opening of described stirred tank is connected with the discharging pipeline, and the outlet of discharging pipeline is corresponding with the charging aperture position of fluid reservoir, and the discharging pipeline is provided with the one-level discharge pump; Described dashpot is rectangular bucket shape, and the top of dashpot is provided with inlet, and the bottom of dashpot is that bucket shape closes up, and dashpot bucket shape bottom is connected with the liquid outlet groove of strip; Regulating shaft passes the liquid outlet groove setting; Regulating shaft is attacked the opposite screw thread of direction with the liquid outlet groove for the both sides, center, and the power output shaft of described adjusting motor is connected with regulating shaft; The liquid outlet of described fluid reservoir and the inlet of dashpot are by the fluid pipeline connection, and the fluid pipeline is provided with the two-stage conveying pump; Described track conveying device comprises cycloconveyor belt and the driving wheel that is in series by hinge by corrosion resistant plate, and conveying belt passes the baking oven setting; One end of track conveying device is corresponding with the liquid outlet groove position, the other end is corresponding with first system film warm-up mill group position in 2～4 system film warm-up mill groups that be arranged in parallel, last system film warm-up mill group correspondence position is provided with system film setting roll group, and system film setting roll group is parallel with system film warm-up mill group; System film setting roll group rear is provided with system film draw-gear;
Described equipment for after-treatment comprises one-level solution tank, aftertreatment warm-up mill group, secondary solution tank, aftertreatment setting roll group, aftertreatment draw-gear and collecting device is set in order; Be provided with first deflector roll between one-level solution tank and the system film draw-gear;
Described one-level solution tank is communicated with one-level fluid infusion groove, and described secondary solution tank is communicated with secondary fluid infusion groove; One-level registration roller and secondary registration roller are arranged in the one-level solution tank, and are on the same surface level, and the rotating speed of two registration rollers is identical; One-level draw roll and secondary drawing roller are arranged in the secondary solution tank, and are on the same surface level, and secondary drawing roller rotating speed is 1～9 times of one-level draw roll rotating speed; Be arranged with four the aftertreatment warm-up mill groups and second deflector roll between one-level solution tank and the secondary solution tank in parallel; Secondary solution tank rear is sequentially set with the 3rd deflector roll, two aftertreatment setting roll groups, aftertreatment draw-gear and collecting devices;
The structure of described system film setting roll group, each system film warm-up mill group, each aftertreatment setting roll group and each aftertreatment warm-up mill group is identical, specifically: comprise oily medium warm-up mill and silicon rubber hold-down roller, wherein the surface of silicon rubber hold-down roller is heat-resisting silicon rubber layer, and silicon rubber hold-down roller two ends connect the Pneumatic pressure regulating device; Oil medium warm-up mill is a steel rider, have the oil pipe road near surface location in the steel rider, the hot oiling machine is communicated with, is communicated with oil pipe road in oily another side of medium warm-up mill by return line by the oil pipe road in side of in-line and oily medium warm-up mill, and in-line is provided with circular-pump;
Described one-level draw roll and secondary drawing roller all are to be made of a pair of roller, and this roller adopts steel rod, and the surface is heat-resisting silastic-layer, and type of heating adopts oily medium heating, and oil circuit is identical with oily medium warm-up mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101527548A CN101672942B (en) | 2009-09-28 | 2009-09-28 | Production device of broad width PVA polarized light film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101527548A CN101672942B (en) | 2009-09-28 | 2009-09-28 | Production device of broad width PVA polarized light film |
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| Publication Number | Publication Date |
|---|---|
| CN101672942A CN101672942A (en) | 2010-03-17 |
| CN101672942B true CN101672942B (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101527548A Expired - Fee Related CN101672942B (en) | 2009-09-28 | 2009-09-28 | Production device of broad width PVA polarized light film |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201514494U (en) * | 2009-09-28 | 2010-06-23 | 杭州电子科技大学 | Equipment for producing wide PVA polarizing films |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201514494U (en) * | 2009-09-28 | 2010-06-23 | 杭州电子科技大学 | Equipment for producing wide PVA polarizing films |
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