JP5150907B2 - Coating device - Google Patents

Description

The present invention relates to a coating apparatus for coating a coating liquid on a continuous strip-shaped web such as plastic film, paper, and metal foil.

  When producing a laminated sheet such as a liquid crystal film, for example, a surface treatment layer such as an antistatic agent or a release agent is applied to at least one surface of the plastic film. And in the coating device which performs application | coating of such a coating liquid, it is necessary to make the thickness of the layer after application | coating into a predetermined thickness for every product. Therefore, in the case where the coating liquid is conventionally applied with such a coating apparatus, first, the coating liquid is first applied to a film conveyed by an applicator roll, and then applied once by a bar around which a smooth rod and a wire are wound. The liquid was scraped off, and adjustment was performed so as to obtain a predetermined coating amount.

  In recent years, in particular, the demand for thickness accuracy in the width direction of optical films has increased, and the required quality for defects such as coating unevenness and streaks has also increased. Under such circumstances, in the coating apparatus, it is difficult to adjust the coating thickness in the width direction, and it has become impossible to meet the required quality, such as solid matter becoming a foreign substance due to volatilization of the coating solution.

Therefore, for example, Japanese Patent Application Laid-Open No. 2004-74147 describes a so-called bar coater that applies a coating liquid with a rotating bar as a coating apparatus that solves such a problem. In this conventional bar coater, a die comprising a feed block that supports the bar at the top, and a cavity block that is disposed on both sides of the feed block and distributes the coating liquid to the upstream side and the downstream side in the web conveyance direction. A coating apparatus using is used. According to this coating apparatus, it is possible to reduce defects due to solidification of the coating liquid by applying the coating liquid distributed on the upstream side and the downstream side to the web as the bar rotates.
Japanese Patent Laying-Open No. 2004-74147 (page 7-9, FIGS. 1 and 2)

  Here, conventionally, in a coating apparatus that performs coating of the coating liquid as described above, adjustment to obtain a product width required by the customer is inevitable. In particular, in order to change the coating width in the bar coater type coating apparatus, there is a method of changing the coating width for coating the coating liquid on the bar. However, in the bar coater described in Patent Document 1, in order to change the coating width for applying the coating liquid to the bar, the width of the die that forms the supply groove for supplying the coating liquid to the bar, that is, the cavity block is variable. It is necessary to make it.

  However, in order to maintain the quality, in a bar coater type coating apparatus using a closed die, it is necessary to set and hold the die with respect to the product width, and an increase in cost is inevitable. On the other hand, it is possible to adjust the length of the supply groove and change the coating width by using a method in which various materials are packed into the supply groove, but there is a problem that the quality is deteriorated.

The present invention was made to solve the above-described problems in the prior art, and in a coating apparatus for coating a coating liquid on a long web with a rotation of a bar, a width change stable in terms of mechanical accuracy, It is another object of the present invention to provide a coating apparatus that enables precise film thickness control and can maintain quality and reduce introduction costs.

In order to achieve the above object, a coating apparatus according to claim 1 of the present application is a coating apparatus that applies a coating liquid to a continuously running web, a feed block, and a cavity block disposed to face the feed block; A supply groove that is formed by a gap between the feed block and the cavity block and that supplies a coating liquid, and is rotatably supported between the feed block and the web, and a coating liquid that is supplied from the supply groove. A bar that is applied to the web in accordance with the rotational movement, a support member that rotatably supports the bar, a driving device that rotationally drives the bar, and a pair that is disposed at both ends of the feed block and the cavity block. It has the side plate, and the cavity block, the basic block, distribution at one or both ends of the basic blocks Is, and a width defined blocks forming the supply grooves of predetermined length to the basic block integrally, characterized in that via a plurality of the width determined block between said base block and said side plates .

  The coating apparatus according to claim 2 is the coating apparatus according to claim 1, wherein the cavity block is disposed to face an upstream side surface and a downstream side surface of the feed block in the web conveyance direction, respectively. An upstream supply groove comprising an upstream cavity block and a downstream cavity block, wherein the supply groove is formed by a gap between the feed block and the upstream cavity block, and supplies the coating liquid from the upstream side in the web conveyance direction. And a downstream supply groove that is formed by a gap between the feed block and the downstream cavity block and that supplies the coating liquid from the downstream side in the web conveyance direction.

The coating apparatus according to claim 3 is the coating apparatus according to claim 1 or claim 2, wherein the width determined block the supply grooves from contacting the surface in the basic block up to a predetermined length in the side plate direction form It is characterized by being.

A coating apparatus according to a fourth aspect is the coating apparatus according to any one of the first to third aspects, wherein the number and the width of the width determining blocks arranged between the basic block and the side plate. The coating width is determined by the above.

The coating apparatus according to claim 5 is the coating apparatus according to any one of claims 1 to 4 , wherein the coating liquid to be applied is an adhesive, an antistatic agent, a release treatment agent, or an antifouling agent. It is a processing agent.

In the coating apparatus according to claim 1 having the above-described configuration, in the coating apparatus that supplies the coating liquid to the rotating bar and applies the coating liquid to the web in accordance with the rotational movement of the bar, the width change is stable in terms of mechanical accuracy. In addition, precise coating thickness control is possible, and quality maintenance and introduction cost reduction can be achieved.
In addition, since a plurality of width determining blocks are interposed between the basic block and the side plate, the length of the supply groove formed integrally with the plurality of width determining blocks and the basic block is set to the set value of the width determining block. A wide range of adjustments can be made depending on the number of interventions. Therefore, the coating width for coating the coating liquid on the bar can be changed, and as a result, the coating width on the web can be made variable.

  In the coating apparatus according to claim 2, the coating liquid is supplied to the bar rotating from the upstream side and the downstream side in the web conveyance direction, and the coating liquid is applied to the web as the bar rotates. An object of the present invention is to provide a coating apparatus and a laminated sheet manufactured by the coating apparatus that can achieve a stable width change in mechanical accuracy and can precisely control the coating thickness, and can maintain quality and reduce the introduction cost. To do.

  In the coating apparatus according to claim 3, since the supply groove is formed from the surface abutting on the basic block to a predetermined length in the side plate direction in the width determining block, the supply is integrally formed by the width determining block and the basic block. The length of the groove can be adjusted to an arbitrary length depending on the set value of the width determining block. Therefore, the coating width for coating the coating liquid on the bar can be changed, and as a result, the coating width on the web can be made variable.

Further, in the coating apparatus according to claim 4, it is possible to adjust to a predetermined coating width by exchanging only the width decided block without replacing the entire dialog. Therefore, it is possible to prevent an increase in the introduction cost.

Further, in the coating apparatus according to claim 5 , by using an adhesive, an antistatic agent, a release treatment agent, or an antifouling treatment agent as a coating solution, it is possible to produce a laminated sheet for various uses. Become.

Hereinafter, first to fourth embodiments will be described as reference embodiments of the coating apparatus according to the present invention. Further, a specific embodiment of the coating apparatus according to the present invention will be described based on the fifth embodiment.

[First embodiment]
First, the die type coating apparatus 1 according to the first embodiment will be described with reference to FIG. FIG. 1 is a perspective view showing a schematic configuration of a die system coating apparatus 1 according to the first embodiment, and FIG. 2 is a cross-sectional view of the die system coating apparatus 1 according to the first embodiment cut in the length direction of the die.

  As shown in FIG. 1, the die type coating apparatus 1 according to the first embodiment includes a die 2, a supply tank 3, a transport line 4, a metering pump 5, transport rollers 6 and 7, and a coating thickness detection sensor. 8 is basically composed.

  The die 2 is a slot die that forms a coating film 12 having a predetermined thickness by coating the coating liquid 11 on the surface of a web 10 such as a continuously running film, paper, or glass. Here, the die type coating apparatus 1 according to the first embodiment uses slot die coating that applies a coating solution to a web using a slot die. Slot die coating is a coating method that has a liquid pool called a cavity inside the die, and the coating liquid is discharged from a narrow gap (slit) extending in the coating width direction leading from the liquid pool, and coating is performed on the web. is there.

Hereinafter, the configuration of the die 2 according to the first embodiment will be described in detail with reference to FIGS. 3 and 4. FIG. 3 is a perspective view showing the die 2 according to the first embodiment, and FIG. 4 is an exploded perspective view of the die 2 according to the first embodiment.
As shown in FIG. 3, the die 2 according to the first embodiment basically includes a die body 15 and side plates 16 and 17 disposed on both sides of the die body 15.

  Further, the die body 15 includes a basic block 18 disposed at the center and width determining blocks 19 and 20 disposed at both ends of the basic block 18. The basic block 18 and the width determining blocks 19 and 20 are integrally formed to form a slit 21 having a predetermined length W and a liquid reservoir described later. The width determining blocks 19 and 20 have a plurality of types of blocks having different lengths (slit lengths) L1 and L2 in the slit direction. By replacing the width determining blocks 19 and 20 with other types of blocks, It becomes possible to change the length (that is, coating width) W of the slit 21 of the die 2 to an arbitrary length without exchanging the entire die 2.

  Next, the configuration of the basic block 18 will be described in more detail. As shown in FIG. 4, the basic block 18 is formed by fitting the blocks 25 and 26 together, and a gap between the blocks 25 and 26 is formed. To form the slit 21. A plurality of screw holes 29 are formed on the side surfaces of the blocks 25 and 26, and the blocks 25 and 26 are fixed by inserting the screws 30. Similarly, the basic block 18 is fixed to the side plates 16 and 17 and the width determining blocks 19 and 20 by inserting the screws 30. A semi-cylindrical cavity (liquid reservoir) 27 is formed in the block 25 along the width direction, and the cavity 27 communicates with the coating liquid supply port 28 provided in the block 25 and the slit 21.

  Next, the configuration of the width determining blocks 19 and 20 will be described. As shown in FIG. 4, the width determining block 19 is formed by fitting the blocks 31 and 32 to each other. A part of the slit 21 is formed by the gap. The width determining block 20 is formed by fitting the blocks 33 and 34 together, and forms a part of the slit 21 by a gap between the blocks 33 and 34. Also, semi-cylindrical cavities 35 and 36 are formed in the blocks 31 and 33 along the width direction. When the width determining blocks 19 and 20 and the basic block 18 are combined, the cavities 35 and 36 are communicated with and integrated with the cavity 27 formed in the basic block 18. Further, a plurality of screw holes 37 and 38 are formed on the side surfaces of the blocks 31 to 34, and the block 31 and the block 32 and the block 33 and the block 34 are fixed by inserting the screw 30 therethrough. Similarly, the width determining blocks 19 and 20 are fixed to the side plates 16 and 17 and the basic block 18 by inserting the screws 30. The width determining blocks 19 and 20 may be arranged only at one end of the basic block 18.

The width determining blocks 19 and 20 are desirably sized at the design stage and processed (polished) together with the basic block 18. It is possible to set by post-addition (separately) processing, but in this case, it is difficult to maintain machine accuracy.
In order to assemble the basic block 18 and the width determining blocks 19 and 20 with high reproducibility, a room (exclusive booth) where temperature variation is controlled at 1 ° C. or less, a precise stone surface plate (JIS00 grade) As a reference plane, it is desirable to fasten the bolts using a predetermined torque wrench.
In addition, the assembly accuracy should be simply confirmed so that there is no catch due to the tactile sensation of the tip of the die lip, and preferably it is confirmed by reproduction using a dedicated measuring instrument (electric micrometer, interferometer, taper gauge, etc.).

  On the other hand, the side plates 16 and 17 are formed with a plurality of screw holes 37 and 38, and the side plates 16 and 17 are fixed to the basic block 18 and the width determining blocks 19 and 20 by inserting the screws 30. Thereby, the application width of the die 2 is restricted and the combination of the blocks 18 to 20 is held.

  Further, the slit 21 forms a discharge port 46 with respect to the approximate center of the lip surface 45 facing the web 10. Here, the die 2 is disposed so as to face the web 10, and the lip surface 45 and the web 10 are separated by a constant gap, that is, a coater gap. Note that the installation direction of the die 2 may be any direction as long as it faces the web 10, and may be an on-roll (see FIG. 2) via the conveyance roller 6 or an off-roll that is not interposed. The discharge port 46 discharges the coating liquid 11 with a predetermined slit length W, and the discharged coating liquid 11 forms a coating liquid bead between the lip surface 45 and the web 10 that runs continuously, and the slit length W is increased. The coating film 12 is formed with a certain thickness on the web surface with a predetermined coating width.

  Further, as shown in FIG. 1, the coating liquid supply port 28 is connected to a coating liquid supply system constituted by the metering pump 5 and the like, and the cavities 27, 35, 36 are connected to the coating liquid supply port 28 via the coating liquid supply port 28. The metered coating solution is supplied by the metering pump 5. Further, the coating liquid supplied to the cavities 27, 35, and 36 is fed to the slit 21 and is discharged from the discharge port 46 of the slit 21 with a uniform amount in the width direction at a constant unit time. The coating liquid supply port 28 is provided at the center position of the slit length W of the die 2 (for example, 500 mm from the left and right ends when the slit length W is 1000 mm).

  On the other hand, the supply tank 3 is a tank for storing the coating solution 11, and the stored coating solution 11 is supplied to the die 2 by the metering pump 5 at a constant supply amount per unit time.

  The transport line 4 is a pipe connecting the supply tank 3 and the die 2, and the coating liquid 11 supplied from the supply tank 3 reaches the coating liquid supply port 28 through the transport line 4. Furthermore, the automatic adjustment valve 51 for adjusting the flow rate of the coating liquid 11 in the transport line 4, the pressure detector 52 for detecting the pressure of the coating liquid 11 flowing in the transport line 4, and the flow rate of the coating liquid 11 flowing in the transport line 4. And a flow rate detector 53 is provided.

  The metering pump 5 is a supply means for supplying the coating liquid 11 stored in the supply tank 3 to the transport line 4 at a constant predetermined amount per unit time.

  The transport rollers 6 and 7 are transport means for transporting the web 10 in a predetermined direction at a predetermined speed set in advance. Here, as shown in FIG. 2, the transport roller 6 is disposed to face the die 2, and forms a gap at a predetermined interval with the lip surface 45.

  The coating thickness detection sensor 8 is a sensor that detects the thickness of the coating film 12 applied to the web 10 in the width direction of the web 10 using infrared rays, radiation, an optical interferometer, or the like.

Further, the die coating apparatus 1 is provided with a control device 54 for controlling the coating thickness detection sensor 8, the automatic adjustment valve 51, the pressure detector 52 and the flow rate detector 53. And the control apparatus 54 adjusts the opening degree of the automatic adjustment valve 51 according to the program set beforehand. Thereby, the inlet pressure or flow rate of each coating liquid supply port 28 can be adjusted.
Further, the control device 54 is a monitor provided separately with the thickness of the coating film 12 detected by the coating thickness detection sensor 8 and the pressure and flow rate of the coating liquid 11 detected by the pressure detector 52 and the flow rate detector 53 ( (Not shown).

  Next, the coating process of the coating liquid 11 onto the web 10 in the die type coating apparatus 1 according to the first embodiment configured as described above will be described. First, the coating liquid 11 measured at a flow rate corresponding to the target thickness setting by the metering pump 5 connected to the level-controlled supply tank 3 is passed through the automatic adjustment valve 51, the pressure detector 52, and the flow rate detector 53. The liquid is supplied to the coating liquid supply port 28. Then, the coating liquid 11 supplied from the coating liquid supply port 28 to the inside of the die 2 is applied to the target substrate from the discharge port 46 while passing through the cavities 27, 35, 36 and the slit 21.

[Second Embodiment]
Next, the die type coating apparatus according to the second embodiment will be described with reference to FIGS. The schematic configuration of the die coating apparatus according to the second embodiment is substantially the same as that of the die coating apparatus 1 according to the first embodiment. Various control processes are substantially the same as those in the die coating apparatus 1 according to the first embodiment.
However, the die type coating apparatus according to the second embodiment is different from the die type coating apparatus 1 according to the first embodiment in the configuration of the die.

Hereinafter, the configuration of the die 102 according to the second embodiment will be described in detail with reference to FIGS. 5 and 6. FIG. 5 is a perspective view showing the die 102 according to the second embodiment, and FIG. 6 is an exploded perspective view of the die 102 according to the second embodiment.
As shown in FIG. 5, the die 102 according to the second embodiment basically includes a die body 103 and side plates 104 and 105 disposed on both sides of the die body 103.

Further, the die main body 103 includes a basic block 106 disposed in the center and width determining blocks 107 and 108 disposed at both ends of the basic block 106. The basic block 106 and the width determining blocks 107 and 108 are integrated to form a slit 109 having a predetermined length W and a liquid reservoir. The width determining blocks 107 and 108 include a plurality of types of blocks having different slit lengths L3 and L4 from the surface abutting on the basic block 106, and the width determining blocks 107 and 108 are replaced with other types of blocks. By doing so, it is possible to change the length (ie, coating width) W of the slit 109 of the die 2 to an arbitrary length without exchanging the entire die 2.
Specifically, as shown in FIG. 6, the width determining blocks 120 and 121 in which the slit and the liquid reservoir are formed over the entire length of the block, and the slit and the liquid reservoir are formed over approximately half of the entire length of the block. There are three types of width determining blocks 107 and 108, which are width determining blocks 122 and 123, and width determining blocks 124 and 125 in which no slits or liquid reservoirs are formed. The application width is the widest when the width determining blocks 120 and 121 are used, and the application width is the narrowest when the width determining blocks 124 and 125 are used. Note that FIG. 5 specifically shows the die 102 combined using the width determining blocks 122, 123.

Next, the configuration of the basic block 106 will be described in more detail. As shown in FIG. 6, the basic block 106 is formed by fitting the blocks 111 and 112 together, and a gap between the blocks 111 and 112 is formed. The slit 109 is formed by the above. The slit 109 forms a discharge port 136 with respect to the approximate center of the lip surface 135 facing the web 10.
A plurality of screw holes 115 are formed on the side surfaces of the blocks 111 and 112, and the blocks 111 and 112 are fixed by inserting the screws 116 therethrough. Similarly, the basic block 106 is fixed to the side plates 104 and 105 and the width determining blocks 107 and 108 by inserting screws 116. Further, a semi-cylindrical cavity (liquid reservoir) 113 is formed in the block 111 along the width direction, and the cavity 113 communicates with the coating liquid supply port 114 provided in the block 111 and the slit 109.
Further, in the die 102 according to the second embodiment, the block 112 is designed to be longer in length than the block 111 by the width determining blocks 107 and 108, and the block 112 is fitted to the width determining blocks 107 and 108. As a result, a part of the slit 109 is formed.

Next, the configuration of the width determination blocks 107 and 108 will be described. As shown in FIG. 4, the width determination block 107 is configured by any one of the selected blocks 120, 122, and 124. Then, a part of the slit 109 is formed by a gap formed between the block 112 and the block 112. On the other hand, the width determining block 108 is configured by any one of the blocks 121, 123, and 125 selected. Then, a part of the slit 109 is formed by a gap formed between the block 112 and the block 112.
The length of the slit formed at that time differs depending on the type of the block. When the width determining blocks 124 and 125 are used, the length of the slit is the longest, and the length is the same as the entire length of the block 112. Further, when the width determining blocks 120 and 121 are used, the length of the slit is the shortest, and the length is the same as the entire length of the block 111.
Further, when the width determining blocks 107 and 108 and the basic block 106 are combined, the cavities 126 to 129 are communicated with and integrated with the cavity 113 formed in the basic block 111. Further, a plurality of screw holes 130 are formed on the side surfaces of the blocks 120 to 125, and the blocks 120 to 125 and the block 112 are fixed by inserting the screws 116. Similarly, the width determining blocks 107 and 108 are fixed to the side plates 104 and 105 and the basic block 106 by inserting the screws 116. The width determining blocks 107 and 108 may be arranged only at one end of the basic block 106.

  On the other hand, the side plates 104 and 105 are formed with a plurality of screw holes 131 and 132, and the side plates 104 and 105 are fixed to the basic block 106 and the width determining blocks 107 and 108 by inserting the screws 116. Thereby, the application width of the die 2 is restricted and the combination of the blocks 106 to 108 is held.

  Next, the coating process of the coating liquid 11 onto the web 10 in the die type coating apparatus according to the second embodiment configured as described above will be described. First, the coating liquid 11 measured at a flow rate corresponding to the target thickness setting by the metering pump 5 connected to the level-controlled supply tank 3 is passed through the automatic adjustment valve 51, the pressure detector 52, and the flow rate detector 53. The liquid is supplied to the coating liquid supply port 28. The coating liquid 11 supplied from the coating liquid supply port 28 to the inside of the die 102 is applied to the target substrate from the discharge port 136 while passing through the cavities 113 and 126 to 129 and the slit 109.

[Third embodiment]
Next, a die type coating apparatus according to a third embodiment will be described. The schematic configuration of the die coating apparatus according to the third embodiment is substantially the same as that of the die coating apparatus 1 according to the first embodiment. Various control processes are substantially the same as those in the die coating apparatus 1 according to the first embodiment.
However, the die type coating apparatus according to the third embodiment is different from the die type coating apparatus 1 according to the first embodiment in the configuration of the die.

  The die according to the third embodiment is configured by interposing a plurality of width determining blocks between the basic block and the side plate. Therefore, compared with the case where only one width determining block is interposed as in the first embodiment or the second embodiment, the slit length (that is, the coating width) W can be adjusted in a wider range.

[Fourth embodiment]
Subsequently, a die type coating apparatus according to a fourth embodiment will be described. The schematic configuration of the die coating apparatus according to the fourth embodiment is substantially the same as that of the die coating apparatus 1 according to the first embodiment. Various control processes are substantially the same as those in the die coating apparatus 1 according to the first embodiment.
However, the die type coating apparatus according to the fourth example is different from the die type coating apparatus 1 according to the first example in the configuration of the die. Specifically, the die according to the fourth embodiment is characterized in that a shim having a length of 200 mm or less is interposed at one or both ends of the discharge slit formed by the width determining block.

  Hereinafter, the configuration of the die 151 according to the fourth embodiment will be described in detail with reference to FIGS. 7 and 8. FIG. 7 is a perspective view showing a die 151 according to the fourth embodiment, and FIG. 8 is an exploded perspective view of the die 151 according to the fourth embodiment.

  As shown in FIG. 7, the die 151 according to the fourth embodiment basically includes a die body 152 and side plates 153 and 154 disposed on both sides of the die body 152.

  Further, the die main body 152 includes a basic block 156 disposed at the center and a plurality of width determining blocks 157 to 160 disposed at both ends of the basic block 156. In particular, in the fourth embodiment, a total of four width determining blocks 157 to 160, two at each end, are arranged, but the number of width determining blocks to be arranged is one at each end or There may be three or more of each.

  Further, shims 161 and 162 are attached to the inner plane portions of the width determining blocks 157 and 160 adjacent to the side plates 153 and 154. When the basic block 156 and the width determining blocks 157 to 160 are integrated to form the slit 163 and the cavity 164 having a predetermined length W, the shims 161 and 162 are interposed at both ends of the slit 163. Here, the material of the shims 161 and 162 is preferably an elastic body that maintains mechanical accuracy and has a sealing property, such as rubber or resin. Furthermore, it is desirable that not only the slit 163 but also the cavity 164 part is provided with a block matching the shape thereof, either integrally or separately with the shims 161 and 162. Further, the lengths D1 and D2 of the shims 161 and 162 in the application width direction are set to 200 mm or less, respectively.

  Then, depending on the number of width determining blocks 157 to 160 to be arranged, the length (ie, coating width) W of the slit 109 of the die 2 is changed without changing the entire die 2 (for example, L5 in FIG. 7). ) Can be changed to an arbitrary length. Further, by changing the lengths D1 and D2 of the shims 161 and 162, it is possible to adjust the detailed slit length W below the width of the width determining block (for example, in units of 1 mm). In addition, the slit length W can be adjusted in a wider range compared to the case where only the manufactured width determining block is used as in the first embodiment, the second embodiment, and the third embodiment. Become.

[Evaluation]
Next, with respect to the relationship between the die configuration, the parallel straightness and flatness on the groove width surface and the lip surface of the discharge slit, and the groove width deviation of the discharge slit, the first to fourth embodiments according to the present invention and the comparison are compared. An example die evaluation result will be compared and described. In addition, as a comparative example, it compared using the structure of the die | dye described in the said patent document 2. FIG. Further, for comparison, a die composed of only a pair of side plates at both ends of the die body is defined as a general slot die.
The measurement was performed on a stone surface plate (JIS00 class) using a commercially available electric micro and CCD camera.

FIG. 9 is a diagram showing mechanical accuracy variation results in the lip parallel straightness and the slot groove width deviation of the first example, the second example, the third example, and the comparative example.
As shown in FIG. 9, in the dies according to the first and third embodiments, the parallel straightness and flatness between the groove width surface of the discharge slit and the lip surface with respect to the coating width to which the coating liquid is discharged are 4/1000 mm or less. In addition, the groove width deviation was 8/1000 mm or less.
Further, in the die according to the second embodiment, the parallel straightness and flatness in the groove width surface of the discharge slit and the lip surface with respect to the coating width for discharging the coating liquid are 2/1000 mm or less, and the groove width deviation is 4 / 1000 mm or less.
On the other hand, in the die according to the comparative example, the parallel straightness and flatness between the groove width surface of the discharge slit and the lip surface with respect to the coating width at which the coating liquid is discharged are larger than 4/1000 mm, and the groove width deviation is larger than 8/1000 mm. became.
Therefore, in the die according to the first to third examples (particularly the second example) as compared with the comparative example, a combination having excellent repeatability can be achieved.

  Subsequently, the relationship between the die configuration and the thickness accuracy of the coating film is formed on the web 10 produced under the following conditions by the die system coating apparatus of the first embodiment, the second embodiment, and the comparative example according to the present invention. The evaluation results of the coated film 12 thus made will be described in comparison. In addition, as a comparative example, it compared with the web produced with the die | dye system coating apparatus using the die | dye of the said patent document 2. FIG.

  In addition, as application conditions, a water-based adhesive (viscosity 100 CP) was used as an application liquid, the coating width was 600 mm (shortest setting), and the slot groove width was 0.3 mm. The coating was performed so that the coating speed was 30 m / min, the coating gap was 0.10 mm, and the coating thickness after drying was 17 μm. As a result, the coating film 12 formed on the web 10 resulted in the graph shown in FIG.

As shown in FIG. 10, in the first embodiment, the thickness of the central portion of the coating film 12 is 1.0 μm thicker than both end portions. In the second embodiment, the thickness of the central portion of the coating film 12 is 0.5 μm thicker than both end portions. Furthermore, in the comparative example, the thickness of the central portion of the coating film 12 was 2.0 μm thinner than both end portions.
Therefore, in the die type coating apparatus according to the first embodiment and the second embodiment (particularly the second embodiment) as compared with the comparative example, it is possible to obtain good thickness accuracy with a small thickness deviation with respect to the coated film after coating. I understand.

  From the above evaluation results, it was confirmed that the die coating apparatus according to the first and second examples can change the coating width while allowing precise control of the coating film thickness accuracy. Needless to say, the maintenance of the mechanical accuracy affects the accuracy of the thickness of the coating film as well as whether or not the width is changed.

  Next, FIG. 11 shows a general slot die, a slot die having a length of 200 mm for each coating width direction, and a slot having a 250 mm shim at both ends of the slit of the slot die. It is the figure which showed the result of having evaluated the slot groove width about die | dye. As shown in FIG. 11, the entire groove width is increased by interposing a shim longer than 200 mm, and the end in the width direction is particularly large.

  On the other hand, FIG. 12 shows a slot die according to the third embodiment, a general slot die, and the lengths of shims 161 and 162 interposed at both ends of the slit 163 in the fourth embodiment (values of D1 and D2 in FIG. 7). The slot groove width evaluation results are shown for each of the slot dies having a thickness of 25 mm, 50 mm, and 75 mm. As shown in FIG. 12, in any case, the groove width deviation is 4/1000 mm or less.

Furthermore, FIG. 13 is a diagram showing a list of evaluation results for the groove width deviation of each slot die from the results of FIGS. 11 and 12.
As shown in FIG. 13, by setting the length of the shim interposed at both ends of the slit to 200 mm or less (preferably 50 mm or less), even if the shim is interposed with respect to the slit, the groove width deviation of the slit Can be maintained at 4/1000 mm or less. Therefore, it is understood that the detailed slit length (application width) using the shim can be adjusted while enabling precise control of the coating film thickness accuracy.
Therefore, by using the die coating apparatus according to the fourth embodiment, the groove width deviation is suppressed to 4/1000 mm or less, and more than the die system coating apparatuses according to the first embodiment, the second embodiment, and the third embodiment. It is possible to change the coating width of the die slit arbitrarily.

As described above in detail, in the die 2 according to the first embodiment, the die type coating apparatus 1 using the die 2 and the coating method, the basic block 18 in which the die body 15 is arranged in the center, and both ends of the basic block 18 And by replacing the width determining blocks 19 and 20 with other types of blocks, the length of the slit 21 of the die 2 (without replacing the entire die 2) ( The coating width W can be changed to an arbitrary length. Thereby, in the coating process in which the coating liquid is applied to the long web 10 using the die 2, it is possible to change the width stably and precisely control the coating film thickness in terms of mechanical accuracy. As a result, it is possible to prevent deterioration in quality and increase in introduction cost while enabling adjustment to obtain a predetermined product width.
In addition, the width determining blocks 19 and 20 are formed of a plurality of types of blocks having different ejection slit distances, and the coating width is changed by exchanging the width determining blocks 19 and 20, so that the entire die 2 is replaced. Instead, by changing only the width determining blocks 19 and 20, adjustment for obtaining a predetermined coating width can be easily performed.
Further, since the parallel straightness and flatness of the groove width surface of the slit 21 and the lip surface 45 with respect to the coating width to which the coating liquid is discharged are 4/1000 mm or less and the groove width deviation is 8/1000 mm or less, it is repeatedly reproduced. A combination with excellent properties is possible.
Moreover, in the die | dye 102 which concerns on 2nd Example, the die-type application | coating apparatus using the die | dye 102, and the coating method, the die main body 103 determines the width | variety arrange | positioned at the basic block 106 arrange | positioned in the center, and the both ends of the basic block 106 The width determining blocks 107 and 108 include a plurality of types of blocks having different slit lengths L3 and L4 from the surface in contact with the basic block 106. The width determining blocks 107 and 108 are By exchanging with another type of block, the length (application width) W of the slit 109 of the die 2 can be changed to an arbitrary length without exchanging the entire die 102. Thereby, in the coating process in which the coating liquid is applied to the long web 10 using the die 102, it is possible to change the width stably and precisely control the coating film thickness in terms of mechanical accuracy. As a result, it is possible to prevent deterioration in quality and increase in introduction cost while enabling adjustment to obtain a predetermined product width.
Further, since the width determining blocks 107 and 108 are formed with a discharge slit from the surface abutting on the basic block 106 to a predetermined distance in the side plate direction, the width determining blocks 107 and 108 are formed integrally with the basic block 106 through the width determining blocks 107 and 108. The length of the slit 109 can be adjusted to an arbitrary length depending on the set values of the width determining blocks 107 and 108. Therefore, the application width of the die 102 can be made variable.
Moreover, in the die | dye 2 which concerns on 3rd Example, the die-type coating device 1 using the die 2, and the coating method, since the said several width determination block is interposed between a basic block and a side plate, several width determination is carried out. By using the block, the length of the ejection slit formed integrally with the basic block can be adjusted in a wide range depending on the set value of the width determining block. Therefore, it is possible to make the coating width of the die variable.
In the die 151 and the die type coating apparatus and coating method using the die 151 described in the fourth embodiment, a plurality of width determining blocks 157 to 160 are interposed between the basic block 156 and the side plates 153 and 154. Furthermore, since shims 161 and 162 are interposed at both ends of the slit 163, the slit length can be adjusted, that is, the coating width of the die 151 can be changed even after the die is designed and manufactured. Furthermore, compared with the case where the length of the slit 163 is adjusted only by the width determining blocks 157 to 160, more precise adjustment (for example, adjustment in units of 1 mm) is possible. Furthermore, by setting the lengths of the shims 161 and 162 to 200 mm or less, it becomes possible to vary the coating width to an arbitrary coating width while maintaining the mechanical accuracy.

  As described above, as the present invention shows, it is not necessary to have a die integrated set in the coating width, and our introduction cost is less than half. Needless to say, the cost estimation varies depending on various conditions, and is not limited to this.

  For example, in the fourth embodiment, the shims 161 and 162 are provided at both ends of the slit 163 of the die 151, but may be provided only at one end.

[Fifth embodiment]
Next, a description will be given of a coating apparatus and a laminated sheet according to a fifth embodiment embodying the present invention. First, a coating apparatus 201 according to the fifth embodiment will be described with reference to FIG. FIG. 14 is a perspective view showing a schematic configuration of a coating apparatus 201 according to the fifth embodiment.

  As shown in FIG. 14, the coating apparatus 201 according to the fifth embodiment basically includes a die 202, a supply tank 203, transfer lines 204 to 206, supply pumps 207 and 208, and transfer rollers 209 and 210. Composed.

  The die 202 forms a coating film 213 having a predetermined thickness by applying a coating liquid 212 to the surface of a web 211 such as a continuously running film, paper, or metal foil. Here, the coating apparatus 201 according to the fifth embodiment is a so-called bar coater that applies a coating liquid to the web 211 using a bar that rotates about a rotation axis orthogonal to the conveyance direction of the web 211 as the die 202 in particular. Use. The bar coater has narrow gaps (supply grooves) extending in the application width direction leading from the liquid reservoir to the upstream side and the downstream side in the web conveyance direction, respectively, and rotates the application liquid from the upstream side and the downstream side from each supply groove. In this coating method, the coating liquid is applied to the web that is supplied to the outer periphery of the bar and abuts against the bar as the bar rotates. According to the coating method using this bar coater, the coating film can be made thinner and the coating process can be performed at a high speed as compared with the ordinary slot die coating.

  Hereinafter, the configuration of the die 202 according to the fifth embodiment will be described in detail with reference to FIGS. 15 to 18. 15 is a front view showing the die 202 according to the fifth embodiment, FIG. 16 is a side view showing the die 202 according to the fifth embodiment, and FIG. 17 is a view of the die 202 cut along line AA in FIG. It is arrow sectional drawing. FIG. 18 is an exploded perspective view of the die 202 according to the fifth embodiment.

  As shown in FIGS. 15 to 18, the die 202 according to the fifth embodiment includes a feed block 222 fixed on the reference base 221, an upstream cavity block 223 and a downstream cavity block 224 combined with the feed block 222. And side plates 227 and 228 disposed on both sides in the longitudinal direction of the die 202, a bar 229 rotatably supported on the top of the feed block 222, and a bar 229 fixed on the reference base 221 and rotatably supported. The driving block 232 is basically composed of a pair of support blocks 230 and 231, a drive motor 232 for rotating the bar 229, and a coupling 233 for coupling the bar 229 to the rotation shaft of the drive motor 232.

Here, the feed block 222 is a block having a substantially rectangular parallelepiped shape, and positions the die 202 with respect to the reference base 221. The feed block 222 is fixed to the reference base 221 with a bolt or the like. In addition, a curved surface 235 corresponding to the diameter of the bar 229 is formed at the top of the feed block 222, and a gap 234 having a constant width is formed between the bar 229 and the bar 229 when the bar 229 is disposed.
In the feed block 222, it is preferable to use PTFE, MC nylon, or ultra high molecular weight PE as the material of the curved surface 235 facing the bar 229 in consideration of the life of the bar. Moreover, although the shape of the curved surface 235 is processed into a semicircular shape in the fifth embodiment, it may be processed into a V shape.

  On the other hand, the upstream cavity block 223 and the downstream cavity block 224 are blocks arranged to face the upstream side surface and the downstream side surface of the feed block 222 in the conveyance direction of the web 211, respectively. And it attaches with respect to the feed block 222 with a volt | bolt etc. The upstream cavity block 223 and the downstream cavity block 224 according to the fifth embodiment are each composed of a combination of a plurality of blocks. Details thereof will be described later.

In addition, a concave portion having a predetermined shape is formed on the surface of the upstream cavity block 223 facing the feed block 222, and the upstream reservoir 236 and the upstream supply groove 237 are formed by combining with the feed block 222.
Similarly, a concave portion having a predetermined shape is formed on the surface of the downstream cavity block 224 facing the feed block 222, and the downstream liquid reservoir 239 and the downstream supply groove 240 are formed by combining with the feed block 222. The lengths of the upstream supply groove 237 and the downstream supply groove 240 according to the fifth embodiment can be changed to arbitrary lengths by rearranging the blocks constituting the upstream cavity block 223 and the downstream cavity block 224. Is possible. Details thereof will be described later.

  Here, the upstream liquid reservoir 236 and the downstream liquid reservoir 239 are formed in a semi-cylindrical shape along the longitudinal direction of the die 202, and are areas for storing the coating liquid 212 supplied from the supply tank 203. The upstream liquid reservoir 236 is communicated with an upstream supply groove 237 and a coating liquid supply port 245 and a coating liquid recovery port 246 described later provided in the upstream cavity block 223. Further, the downstream liquid reservoir 239 communicates with the coating liquid supply port 247 provided in the downstream cavity block 224 and the downstream supply groove 240.

The upstream cavity block 223 is also provided with a coating liquid supply port 245 that guides the coating liquid 212 supplied from the supply tank 203 via the transport line 204 to the upstream liquid reservoir 236. Further, the upstream cavity block 223 is formed with a coating liquid recovery port 246 that recovers the coating liquid 212 that has overflowed when coating the web 211 to the supply tank 203 again via the transport line 206.
On the other hand, the downstream cavity block 224 is formed with a coating liquid supply port 247 that guides the coating liquid 212 supplied from the supply tank 203 through the transport line 205 to the downstream liquid reservoir 239.
The measured application liquid is supplied from the supply tank 203 to the upstream liquid reservoir 236 through the application liquid supply port 245 by the supply pump 207. Further, the coating liquid 212 supplied to the upstream liquid reservoir 236 is sent to the upstream supply groove 237 and discharged at a constant amount per unit time in the width direction with a uniform pressure in the width direction, and upstream (see FIG. 17) to the outer peripheral surface of the bar 229. To the right). On the other hand, the measured application liquid is supplied from the supply tank 203 to the downstream liquid reservoir 239 via the application liquid supply port 247 by the supply pump 208. Further, the coating liquid 212 supplied to the downstream liquid reservoir 239 is supplied to the downstream supply groove 240 and discharged at a constant amount per unit time in the width direction with a uniform pressure in the width direction, and downstream to the outer peripheral surface of the bar 229 (FIG. 17). From the left). The coating liquid supply ports 245 and 247 are center positions in the length direction of the upstream supply groove 237 and the downstream supply groove 240 of the die 202 (for example, 300 mm from the left and right ends when the groove width is 600 mm). Is provided.

  Further, the side plates 227 and 228 are disposed on both sides of the die 202 in the longitudinal direction, and regulate the length of the upstream supply groove 237 and the downstream supply groove 240 and seal the die 202. The side plates 227 and 228 are fixed to the feed block 222, the upstream cavity block 223, and the downstream cavity block 224 by bolts or the like.

  In addition, in order to assemble each block with good reproducibility, a specified torque wrench is used with a room (exclusive booth) where temperature variation is controlled at 1 ° C or less and a precise stone surface plate (JIS00 class) as a reference plane. It is desirable to use and tighten bolts.

On the other hand, the bar 229 is a cylindrical member that is rotatably supported by the support blocks 230 and 231 with respect to the reference base 221. The bar 229 is disposed on the upper part of the feed block 222 in parallel with the feed block 222 and abuts against the web 211 to be conveyed. Further, the rotation axis of the bar 229 is a direction that intersects the conveyance direction of the web 211. The bar 229 is rotationally driven at a predetermined speed in a predetermined rotational direction in accordance with the driving of the drive motor 232 coupled through the coupling 233.
The bar 229 preferably has a diameter in the range of 6 mm to 20 mm. In addition, stainless steel is often used as the material, and SUS304 or SUS316 considering corrosion resistance is used.
Furthermore, it is possible to use a bar 229 in which a wire is wound. In this case, a wire diameter of 20 μm to 150 μm is used. In the fifth embodiment, the bar 229 rotates in the reverse rotation direction with respect to the web based on the drive of the drive motor 232, but the rotation direction of the bar may be the normal rotation direction with respect to the web 211. Further, the rotational speed is used between 10 rpm and 500 rpm.

Next, the upstream cavity block 223 and the downstream cavity block 224 will be described in more detail.
First, the upstream cavity block 223 will be described. The upstream cavity block 223 is arranged at the center of the basic block 250 and at both ends of the basic block 250 in the same manner as the die body 15 according to the first embodiment. It is composed of width determining blocks 251 and 252. The basic block 250 and the width determining blocks 251 and 252 are integrally formed to form the upstream supply groove 237 and the upstream liquid reservoir 236 having the predetermined length described above. The width determining blocks 251 and 252 include a plurality of types of blocks having different supply groove lengths L1 and L2 as in the first embodiment (see FIGS. 3 and 4). By replacing the block with this kind of block, the length of the upstream supply groove 237 (that is, the coating width) of the die 202 can be changed to an arbitrary length without replacing the entire die 202. The basic block 250 and the width determining blocks 251 and 252 are fixed by fastening with screws or bolts. Further, the width determining blocks 251 and 252 may be arranged only at one end of the basic block 250.

  The width determining blocks 251 and 252 are preferably sized at the design stage and processed (polished) together with the basic block 250. It is possible to set by post-addition (separately) processing, but in this case, it is difficult to maintain machine accuracy.

The upstream cavity block 223 may be configured as shown in the following (A) to (C).
(A) Similarly to the die body 103 according to the second embodiment, the width determining blocks 251 and 252 are made from a plurality of types of blocks having different supply groove lengths L3 and L4 from the surface abutting against the basic block 250. Configure (see FIGS. 5 and 6). Then, by replacing the width determining blocks 251 and 252 with other types of blocks, the length of the upstream supply groove 237 (that is, the coating width) of the die 202 is changed to an arbitrary length without replacing the entire die 202. It becomes possible to do.
Specifically, as shown in FIG. 6, the width determining block in which the slit and the liquid reservoir are formed over the entire length of the block, and the width in which the slit and the liquid reservoir are formed over substantially the entire length of the block. There are three types of width determining blocks: a determining block and a width determining block in which no slit or liquid reservoir is formed. When the width determining block is used, the application width is the largest, and when the width determining block is used, the application width is the narrowest.

  (B) Similar to the die body according to the third embodiment, the upstream cavity block 223 is configured by interposing a plurality of width determining blocks 251 and 252 between the basic block 250 and the side plates 227 and 228. Therefore, the length of the upstream supply groove 237 (that is, the coating width) can be adjusted in a wider range than in the case where only one width determining block is interposed.

(C) Similar to the die main body 152 according to the fourth embodiment, shims having lengths D1 and D2 are attached to the inner plane portions of the width determining blocks 251 and 252 adjacent to the side plates 227 and 228 (FIG. 7, FIG. 8). When the basic block 250 and the width determining blocks 251 and 252 are integrated to form the upstream supply groove 237 and the upstream liquid reservoir 236 having a predetermined length, the shim is interposed at both ends of the upstream supply groove 237. Here, the shim is preferably made of an elastic body, such as rubber or resin, that maintains mechanical accuracy and has sealing properties. Furthermore, it is desirable to install not only the upstream supply groove 237 but also the upstream liquid reservoir 236 portion with a block corresponding to the shape, either integrally with the shim or separately. Further, the lengths D1 and D2 of the shim in the application width direction are 200 mm or less, respectively.
Then, depending on the number of width determining blocks 251 and 252 to be arranged, the length of the upstream supply groove 237 (that is, the coating width) of the die 202 is changed without changing the entire die 202 (for example, in FIG. It becomes possible to change to an arbitrary length in L5). Furthermore, by changing the lengths D1 and D2 of the shim, it becomes possible to adjust the length of the supply groove in detail, which is equal to or smaller than the width of the width determining block (for example, 1 mm unit).

  On the other hand, the downstream cavity block 224 includes a basic block 253 disposed at the center and width determining blocks 254 and 255 disposed at both ends of the basic block 253. The configuration of the downstream cavity block 224 is the same as that of the upstream cavity block 223 already described, and the details are omitted.

  On the other hand, the supply tank 203 shown in FIG. 14 is a tank for storing the coating liquid 212, and the stored coating liquid 212 is supplied to the die 202 with a constant supply amount per unit time by the supply pumps 207 and 208. Is done. In addition, although the kind of coating liquid used changes with laminated sheets to manufacture, an adhesive, an antistatic agent, a peeling treatment agent, an antifouling treatment agent, etc. are used.

  Further, the transfer line 204 and the transfer line 206 are pipes connecting the supply tank 203 and the upstream liquid reservoir 236 of the die 202, and the transfer line 205 is a pipe connecting the supply tank 203 and the downstream liquid reservoir 239 of the die 202. is there. The coating liquid 212 supplied from the supply tank 203 is distributed by the transport line 204 and the transport line 205, and the coating liquid 212 that has passed through the transport line 204 reaches the upstream supply groove 237 on the upstream side. On the other hand, the coating liquid 212 that has passed through the transport line 205 reaches the downstream supply groove 240 on the downstream side. Further, the coating liquid 212 overflowed in the upstream supply groove 237 and the upstream liquid reservoir 236 is collected into the tank through the transport line 206.

Further, the transport line 204 is provided with a flow meter 261 for detecting the flow rate of the coating liquid 212 flowing through the transport line 204 and a pressure meter 262 for detecting the pressure. Similarly, the transport line 205 is provided with a flow meter 263 that detects the flow rate of the coating liquid 212 flowing through the transport line 205 and a pressure meter 264 that detects pressure. Further, the transport line 206 is provided with a flow meter 265 that detects the flow rate of the coating liquid 212 flowing through the transport line 206.
The flow rates supplied to the transfer line 204 and the transfer line 205 are managed by flow meters 261 and 263, respectively. The supplied coating solution is transferred to the web 211 by the bar 229 as described above. Further, the transferred coating liquid thickness can be managed by the difference between the indicated value of the flow meter 265 and the flow rate of the supply system. Moreover, pressure loss of the upstream and downstream blocks is managed by pressure gauges 262 and 264 provided in the supply system.

  The supply pumps 207 and 208 are supply means for supplying the coating liquid 212 stored in the supply tank 203 to the transfer line 204 and the transfer line 205 at a constant predetermined amount per unit time. The supply pumps 207 and 208 do not have to be two, and it is possible to install only one. In that case, the upstream and downstream flow rates are adjusted by valve operation.

  Further, the conveyance rollers 209 and 210 are conveyance means for conveying the web 211 in a predetermined direction at a predetermined speed set in advance.

  Although not shown, the coating apparatus 201 is provided with a control device that controls the supply pumps 207 and 208, the drive sources of the transport rollers 209 and 210, and the drive motor 232. Then, the control device adjusts the supply pump speed, the transport speed of the transport rollers 209 and 210, the rotational speed of the bar 229, and the like according to a preset program. Thereby, the thickness of the coating film 213 applied to the web 211 is adjusted.

  Next, a coating process of the coating liquid 212 onto the web 211 in the coating apparatus 201 according to the fifth embodiment configured as described above will be described. First, the supply pumps 207 and 208 connected to the level-controlled supply tank 203 distribute the coating liquid 212 measured at a flow rate corresponding to the target thickness setting in two directions, upstream and downstream, respectively, and store the upstream liquid reservoirs respectively. 236 and the downstream reservoir 239. Then, the coating liquid 212 is supplied from the upstream supply groove 237 and the downstream supply groove 240 communicated with the liquid reservoirs 236 and 239 to the outer peripheral surface of the rotating bar 229. Then, as the bar 229 rotates, a coating liquid film is formed on the outer peripheral surface of the bar, and then the bar 229 comes into contact with the web 211 to apply the coating liquid 212 to the web 211 with a predetermined thickness.

As described above, according to the coating apparatus 201 according to the fifth embodiment, the coating liquid 212 is supplied to the bar 229 rotating from the upstream side and the downstream side in the conveyance direction of the web 211, and the web 211 is rotated along with the rotational movement of the bar 229. In a coating apparatus using a bar coater that coats the coating liquid, the basic blocks 250 and 253 having the upstream cavity block 223 and the downstream cavity block 224 disposed at the center, and the widths disposed at both ends of the basic blocks 250 and 253 The block 251, 252, 254, and 255 are configured, and the width determining blocks 251, 252, 254, and 255 are replaced with other types of blocks, so that the upstream supply groove 237 and the downstream can be replaced without replacing the entire die 202. The length (application width) of the supply groove 240 can be changed to an arbitrary length. Thereby, in the coating process in which the coating liquid is applied to the long belt-like web 211 using a bar coater, it is possible to change the width stably and precisely control the coating film thickness in terms of mechanical accuracy. As a result, it is possible to prevent deterioration in quality and increase in introduction cost while enabling adjustment to obtain a predetermined product width.
Further, the width determining blocks 251, 252, 254, 255 are formed with the supply grooves 37, 240 from the surface contacting the basic blocks 250, 253 to the predetermined length in the direction of the side plates 227, 228. The lengths of the supply grooves 237 and 240 formed integrally by H.254, 255 and the basic blocks 250, 253 are set to arbitrary lengths depending on the set values of the width determining blocks 251, 252, 254, 255. It becomes possible to adjust. Accordingly, it is possible to change the application width for applying the application liquid to the bar 229, and as a result, the application width to the web 211 can be made variable.
In addition, by using a pressure-sensitive adhesive, an antistatic agent, a release treatment agent, or an antifouling treatment agent as the coating liquid 212, it becomes possible to produce laminated sheets used for various applications.
In addition, in the laminated sheet manufactured by the coating apparatus 201, by using only one coating apparatus, it is possible to uniformly apply various types of laminated sheets in the width direction. Reduction can be achieved.

It is a perspective view which shows schematic structure of the die-type coating device which concerns on 1st Example. It is sectional drawing which cut | disconnected the die-type coating device which concerns on 1st Example in the length direction of die | dye. It is the perspective view which showed the die | dye which concerns on 1st Example. It is a disassembled perspective view of the die | dye which concerns on 1st Example. It is the perspective view which showed the die | dye concerning 2nd Example. It is a disassembled perspective view of the die | dye which concerns on 2nd Example. It is the perspective view which showed the die | dye which concerns on 4th Example. It is a disassembled perspective view of the die | dye which concerns on 4th Example. It is the table | surface which showed the evaluation result of the mechanical precision of the die | dye of 1st Example-3rd Example, and a comparative example. It is the graph which showed the evaluation result of the coating film thickness produced by 1st Example, 2nd Example, and the comparative example. It is the table | surface which showed the evaluation result of the mechanical precision of the die which inserted the shim of predetermined length in the general slot die and the general slot die. It is the table | surface which showed the evaluation result of the mechanical precision of the die | dye of 3rd Example and 4th Example. It is the figure which showed the list | wrist of the evaluation result about the groove width deviation of each slot die from the result of FIG.11 and FIG.12. It is a perspective view which shows schematic structure of the coating device which concerns on 5th Example. It is the front view which showed the die | dye concerning 5th Example. It is the side view which showed the die | dye concerning 5th Example. It is arrow sectional drawing which cut | disconnected die | dye by line AA of FIG. It is the disassembled perspective view which showed the die | dye which concerns on 5th Example.

201 coating device 202 die 211 web 212 coating solution 213 coating film 222 feed block 223 upstream cavity block 224 downstream cavity block 227, 228 side plate 229 bar 237 upstream supply groove 240 downstream supply groove 250, 253 basic blocks 251 252 254 255 Width determination block

Claims (5)

In a coating apparatus that applies a coating liquid to a continuously running web,
A feed block,
A cavity block disposed opposite the feed block;
A supply groove that is formed by a gap between the feed block and the cavity block and that supplies a coating liquid;
A bar that is rotatably supported between the feed block and the web, and applies the coating liquid supplied from the supply groove to the web in accordance with the rotational movement;
A support member for rotatably supporting the bar;
A driving device for rotationally driving the bar;
A pair of side plates disposed at both ends of the feed block and the cavity block ,
The cavity block is
Basic block,
Wherein arranged at one or both ends of the basic blocks, and a width defined blocks forming the supply grooves of predetermined length to the basic block integrally,
A coating apparatus , wherein a plurality of the width determining blocks are interposed between the basic block and the side plate . The cavity block is composed of an upstream cavity block and a downstream cavity block arranged to face the upstream side surface and the downstream side surface of the feed block in the web conveyance direction, respectively.
The supply groove is
An upstream supply groove that is formed by a gap between the feed block and the upstream cavity block, and that supplies a coating liquid from an upstream side in the web conveyance direction;
A downstream supply groove that is formed by a gap between the feed block and the downstream cavity block, and that supplies a coating liquid from the downstream side in the web conveyance direction;
The coating apparatus according to claim 1, comprising: Coating apparatus according to claim 1 or claim 2 wherein the width determined block is characterized in that the supply grooves from contacting the surface to a predetermined length to the side plate direction is formed in the basic block. The coating apparatus according to any one of claims 1 to 3, wherein the coating width is determined by the number and the block width of the width determining blocks arranged between the basic block and the side plate . The coating apparatus according to any one of claims 1 to 4 , wherein the coating liquid to be applied is an adhesive, an antistatic agent, a release treatment agent, or an antifouling treatment agent.

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