KR100867649B1 - Treating apparatus for tri-acetyl-cellulose film - Google Patents

Abstract

A treating apparatus for Tri-acetyl-cellulose film is provided to improve product value by removing wrinkles generating during winding Tri-acetyl-cellulose film in a roll type. A treating apparatus for Tri-acetyl-cellulose film comprises a uncoiler(110) uncoiling Tri-acetyl-cellulose film coiled into roll type; a hot water tub(120) which forms a plurality of rollers(124) so that the Tri-acetyl-cellulose film which is uncoiled from the uncoiler inside the accommodation space; a transferring roller(142) evaporating moisture on Tri-acetyl-cellulose film by transferring Tri-acetyl-cellulose film passing through the hot water tub; a guide rail(144) arranged in the endless type at both ends of the Tri-acetyl-cellulose film transferred by the transferring roller; a drier(140) having a clamp(146) moving along the guide rail at the state of fastening or releasing selectively the end of Tri-acetyl-cellulose film; and a winding device(150) winding Tri-acetyl-cellulose film passing through the drier.

Description

Triacetyl cellulose film processing equipment {Treating Apparatus for Tri-acetyl-cellulose film}

The triacetyl cellulose film processing apparatus of the present invention relates to a triacetyl cellulose film processing apparatus for removing wrinkles of the triacetyl cellulose film to improve product quality.

In general, a polarizing film uniaxially stretches a polyvinyl alcohol (PVA) film and orients iodine molecules or dichroic dyes in one direction between polyvinyl alcohol polymers to pass only light in one direction. The light in the other direction is produced by dyeing and stretching techniques that allow it to function as a polarizer by absorbing light.

The most important technology of the polarizing film manufacturing technology as described above is to dye the polyvinyl alcohol film with resin properties such as degree of polymerization, saponification degree and syndiotacticity of polyvinyl alcohol used as polarizer, and iodine molecules and dichroic dyes. It can be said to be a manufacturing technique for uniformly dyeing. The physical / chemical properties of the polarizing film are greatly affected by the properties of the polarizing film depending on the stretching ratio of polyvinyl alcohol, the processing conditions such as the concentration of iodine and the temperature.

The polarizing film itself manufactured by techniques such as stretching of the polyvinyl alcohol film and adsorption of iodine has a disadvantage in that it is basically vulnerable to the external environment. Tensile strength in the direction orthogonal to the stretching direction is very weak and easily broken, and in the case of iodine polarizing film, the sublimation problem is not completely solved even after crosslinking by boric acid. Therefore, in order to protect such a polarizing film, a triacetyl cellulose (Tri-acetyl-cellulose, TAC) film is bonded to the top and bottom of the polarizing film to protect the polarizing film, and thus the three-layer structure of TAC-PVA-TAC In general, it is referred to as a polarizing film.

In the case of the triacetyl cellulose film used as a protective film of the polarizing film as described above, since the surface hardness is very low, in the case of the polarizing film used for the top plate directly contacted by the consumer surface protective coating such as hard coating (HC) Processing. In addition, a triacetyl cellulose film that is subjected to an anti glare (AG) and an anti reflection / low reflection (AR / LR) treatment is used to reflect external light and thereby improve viewing quality.

In addition, AS (Anti Static) treatment is also performed to prevent dust from adhering to static electricity. In particular, in the IPS mode, since the electrode is located in the color filter glass part, the liquid crystal movement due to external charges (electrostatics, etc.) may be disturbed. Therefore, the AS treatment is necessary for the polarizing film used in the IPS mode. .

The triacetyl cellulose film is manufactured in a very thin thickness in the manufacturing step is wound in the form of a roll, and then uncoated in the coating step, which is the next step to the coating treatment, wrinkles in the thin triacetyl cellulose film in this winding and unwinding step And when wrinkles occur, there is a problem that the quality is degraded, such as the film is torn or partially stretched in the process of partially unfolding.

The present invention has been made to solve the above problems, to improve the merchandise value of the product by removing the wrinkles and wrinkles of the triacetyl cellulose film generated during the manufacturing process of the triacetyl cellulose film and the winding in the form of a roll It is an object to provide a triacetyl cellulose film processing apparatus.

In addition, after the triacetyl cellulose film is immersed in hot water to remove wrinkles and wrinkles, the surface of the triacetyl cellulose film is smoothed by pressing in the process of removing water by pressing through a pressure roller in the post-process coating step It is another object of the present invention to provide a triacetyl cellulose film processing apparatus in which a coating material is easily applied.

In addition, it is an object of the present invention to provide a triacetyl cellulose film processing apparatus for preventing the shrinkage in the width direction by allowing both ends of the triacetyl cellulose film is fixed and conveyed in the clamp during the drying process.

The triacetyl cellulose film processing apparatus of the present invention for achieving the above object is an unwinder for unwinding the triacetyl cellulose film wound in a roll form; and an accommodating space accommodating hot water for heating the triacetyl cellulose film therein. A hot water tank having a plurality of rollers formed therethrough so that the triacetyl cellulose film unwound from the unwinder passes through the receiving space; and the triacetyl cellulose film having passed through the hot water tank is transferred to the triacetyl cellulose film. Selective fixation / release of the transfer roller for drying the buried moisture, guide rails arranged in both ends of the triacetyl cellulose film conveyed by the feed roller, and endless ends of the triacetyl cellulose film. Clamp moving along guide rail in one state Formed dryer; And it is achieved by providing a triacetyl cellulose film processing apparatus comprising a winder for winding the triacetyl cellulose film passed through the dryer.

It is preferable to further include a water heater consisting of a pair of pressure rollers disposed on the upper and lower portions of the triacetyl cellulose film passing through the hot water tank to remove water from the triacetyl cellulose film.

The water separator is preferably formed with an elastic tube for elastically pressing the triacetyl cellulose film on the outer surface of the pressure roller.

The clamp is formed with a handle for actuating and releasing the triacetyl cellulose film, the first inclination to move the handle of the clamp moving along the guide rail on the triacetyl cellulose film inlet side of the dryer to the fixed A piece is formed, and preferably, a second inclined piece is formed on the triacetyl cellulose film outlet side of the dryer to release the handle of the clamp moving along the guide rail.

The hot water tank is preferably further provided with a heater for providing heat to maintain the temperature of the hot water accommodated in the receiving space 50 ~ 70 ℃.

The triacetyl cellulose film processing apparatus of the present invention as described above has the effect of improving the merchandise value of the product by removing wrinkles and wrinkles of the triacetyl cellulose film generated in the manufacturing process.

In addition, after removing the wrinkles and wrinkles in hot water, the surface of the triacetyl cellulose film is smooth in the process of removing water by pressing through a pressure roller, so that the coating material is easily applied in the subsequent coating step. There is also.

In addition, both ends of the triacetyl cellulose film is fixed to the clamp and transported in the drying process, thereby preventing shrinkage.

Hereinafter, a preferred embodiment of the triacetyl cellulose film processing apparatus of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of the triacetyl cellulose film processing apparatus of the present invention.

The triacetyl cellulose film processing apparatus of the present invention as shown in the drawings comprises an unwinder 110, a hot water tank 120, a washing machine, a dryer 140, and a winder 150.

The unwinder 110 is to unwind the triacetyl cellulose film (F) wound in the form of a roll, a fixed shaft 112 for fixing the take-up roll, and a support for supporting both ends of the fixed shaft 112 ( 114) is formed.

The hot water tank 120 has an accommodation space 122 for receiving hot water maintaining a predetermined temperature therein, and a triacetyl cellulose film F unwound from the unwinder 110 in the accommodation space 122. A plurality of rollers 124 to pass through, and the triacetyl cellulose film (F) has a chemical structure that unfolds wrinkles and wrinkles in about 60 ℃ hot water so that the hot water is maintained at a temperature of about 50 ~ 70 ℃ A heater 126 for heating is formed.

The water receiver 130 is formed on the outer surface of the elastic tube 132a and adhered to the upper and lower surfaces of the triacetyl cellulose film F passing through the hot water tank 120 and buried in the triacetyl cellulose film F. A pair of pressure rollers 132 for removing the water and a cylinder 134 for pressing the pressure rollers 132 toward the film is formed, the elastic tube 132a has the characteristics of oil resistance, wear resistance, aging resistance Nitrile Butadiene Rubber (NBR).

The dryer 140 transfers the triacetyl cellulose film F passing through the hot water tank 120 so that the moisture is evaporated in the transfer process, and by the transfer roller 142. Guide rails 144 disposed on both ends of the triacetyl cellulose film F in the form of an endless form, and both ends of the triacetyl cellulose film F during the transfer process of the triacetyl cellulose film F. It is configured to include a clamp 146 to fix and prevent shrinkage in the width direction during drying.

Here, the clamp 146 is formed with a handle 146a for actuating the fixing and releasing of the triacetyl cellulose film (F), and moves along the guide rail 144 at the inlet side of the dryer 140 A first inclined piece 148a is formed to allow the handle 146a of the clamp 146 to be fixedly moved, and moves along the guide rail 144 on the outlet side of the triacetyl cellulose film F of the dryer 140. A second inclined piece 148b is formed to release the handle 146a of the clamp 146.

The winder 150 is to wind the dried triacetyl cellulose film (F) passed through the dryer 140 in the form of a roll, a fixed shaft for fixing the triacetyl cellulose film (F) roll, and the fixed shaft A support for supporting both ends is formed.

Hereinafter, the operation of the triacetyl cellulose film processing apparatus of the present invention having the above configuration will be described.

First, as shown in FIG. 1, the triacetyl cellulose film F is unwound from a roll supported by a support fixed to the fixed shaft of the unwinder 110 and supplied to the hot water tank 120.

The hot water tank 120 is disclosed in FIG. As shown in the figure, the triacetyl cellulose film F supplied from the unwinder 110 is about 50 to 70 ° C. by the rollers 124 disposed in the receiving space 122 of the hot water tank 120. The hot water is heated to the temperature of the, it is passed through the hot water in a state wound on the plurality of rollers (124) is to stay in the hot water for a sufficient time to unfold wrinkles and wrinkles.

In addition, the hot water filled in the receiving space 122 of the hot water tank 120 is heated by the heater 126 provided in the hot water tank 120, the film of the triacetyl cellulose film (F) in the hot water for a sufficient time Maintain 60 ° C, the best condition for wrinkles.

As described above, the triacetyl cellulose film F passing through the hot water tank 120 passes between the pair of pressure rollers 132 of the water receiver 130 as shown in FIG. 3 and the triacetyl cellulose film F The moisture on the dirt is removed.

In particular, the triacetyl cellulose film (F) passing between the pair of pressure roller 132 by the cylinder 134 for pressing both ends of the pressure roller 132 is passed through a predetermined pressure, so triacetyl cellulose Water remaining on the film F is removed, and the elastic tube 132a of the elastic material formed on the outer surface of the pressure roller 132 elastically contacts the triacetyl cellulose film F, so that the pressure roller 132 In addition to preventing the triacetyl cellulose film F from being damaged by the pressing force and the friction, it is possible to effectively remove the moisture on the surface.

As described above, the triacetyl cellulose film F passing through the water season 130 is passed through the dryer 140 by the transfer roller 142, as shown in FIG. Since the shrinkage in the width direction is generated as shown in Figure 4 by fixing the both ends of the triacetyl cellulose film (F) through the clamp 146 to move along the guide rail 144 to transfer the triacetyl cellulose film (F) It prevents shrinkage deformation during drying.

That is, the triacetyl cellulose film (F) from which water is removed while passing through the above-mentioned water receiver 130 is transferred to the surface while being transported a predetermined distance in the dryer 140 by the transfer roller 142 of the dryer 140. The moisture is evaporated to dry, and in order to prevent the triacetyl cellulose film (F) from shrinking during the drying process, a clamp for moving the both ends of the triacetyl cellulose film (F) along the guide rail 144 as described above ( 146) to be transported in a fixed state.

Accordingly, the triacetyl cellulose film F fixed at both ends by the clamp 146 is dried in a state where the triacetyl cellulose film F is pulled not only in the conveying direction but also in the width direction, so that wrinkles and wrinkles of the triacetyl cellulose film F are improved. Not only the quality of the product is improved, but also the film is pressed through the pressure roller 132 in the state passing through the hot water tank 120 as described above, so the surface condition is improved, so the coating effect in the subsequent coating step is also excellent. Termination benefits arise.

Looking at the action of the clamp as described above, first, as shown in Figure 5 in the state in which the triacetyl cellulose film (F) is supplied and transported by the feed roller 142, a plurality of predetermined intervals provided on the guide rail 144 When the clamp 146 moving along the guide rail 144 is positioned to the side of the triacetyl cellulose film F in an unlocked state, the clamp 146 of the clamp 146 is positioned by the fixed first inclined piece 148a. As the handle 146a comes into contact with the clamp 146, the clamp 146 is fixed, and the triacetyl cellulose film F is fixed to the clamp 146.

As described above, the clamp 146 to which the triacetyl cellulose film F is fixed moves along the guide rail 144 in the advancing direction of the triacetyl cellulose film F, and as shown in FIG. 6, of the dryer 140. When reaching the exit side, the handle 146a of the clamp 146 is in contact with the second inclined piece 148b and the clamp 146 is switched to the unlocked state so that the triacetyl cellulose film F is released from the clamp 146. The unlocked, the unlocked clamp 146 is again moved to the inlet side along the guide rail 144.

As described above, the triacetyl cellulose film F having passed through the dryer 140 is wound and rolled again by the winding machine 150 disposed at the end and stored and distributed.

1 is a block diagram of a triacetyl cellulose film processing apparatus of the present invention,

2 is a cross-sectional view of the hot water tank of the present invention,

3 is a cross-sectional view of the water receiver of the present invention,

4 is a plan view of the drying unit of the dryer of the present invention,

5 is a side cross-sectional view of the operation of the inlet side of the dryer of the present invention;

Fig. 6 is a cross sectional side view of the outlet side of the dryer of the present invention.

※ Explanation of code for main part of drawing

110: unwinder, 112: fixed shaft, 114: support,

120: hot water tank, 122: holding space, 124: roller,

126: heater, 130: water machine, 132: pressure roller,

132a: elastic tube, 134: cylinder, 140: dryer,

142: feed roller, 144: guide rail, 146: clamp,

146a: handle, 148a: first inclined piece, 148b: second inclined piece,

150: winder, 152: fixed shaft, 154: support

Claims (5)

A winding machine for unwinding the triacetyl cellulose film wound in a roll form; A hot water tank forming an accommodating space therein for receiving hot water for heating the triacetyl cellulose film, and forming a plurality of rollers so that the triacetyl cellulose film unwound from the unwinder passes through the accommodating space; The transfer roller for transporting the triacetyl cellulose film passed through the hot water tank to evaporate the moisture on the triacetyl cellulose film, and arranged in an endless type on both sides of the triacetyl cellulose film conveyed by the feed roller A guide rail, and a dryer having a clamp moving along the guide rail in a state where the end of the triacetyl cellulose film is selectively fixed / unlocked; And, It includes a winder for winding the triacetyl cellulose film passed through the dryer, The clamp is formed with a handle for actuating and releasing the triacetyl cellulose film, the first inclined piece for allowing the handle of the clamp moving along the guide rail is fixed to the triacetyl cellulose film inlet side of the dryer It is formed, the triacetyl cellulose film processing apparatus, characterized in that the second inclined piece is formed on the triacetyl cellulose film outlet side of the dryer to release the handle of the clamp moving along the guide rail. The method of claim 1, Triacetyl cellulose film processing apparatus further comprises a water heater comprising a pair of pressure rollers disposed on the upper and lower portions of the triacetyl cellulose film passing through the hot water tank to remove water from the triacetyl cellulose film. . The method of claim 2, The water treatment machine is triacetyl cellulose film processing apparatus, characterized in that the elastic tube for elastically pressing the triacetyl cellulose film on the outer surface of the pressure roller is formed. delete The method of claim 1, The hot water tank is triacetyl cellulose film processing apparatus further comprises a heater for providing heat to maintain the temperature of the hot water accommodated in the receiving space 50 ~ 70 ℃.

Images