JPH11192452A - Coating device, working for coater die, jig for coater die, grinding device, and coated product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the surface accuracy of a slit with time to stabilize the flow rate distribution of coating liquid by machining raw material to perform rough working, removing a working altered layer in which residual stress is generated by the rough working by grinding, and performing finish working by grinding. SOLUTION: In a working method of a coater die 1, first, raw material undergoes cutting to perform rough working. Next, by rough grinding, a slit back surface 1e, a slide surface 1a, a slit surface 1c, and a combined surface 1d undergo grinding by using a same grindstone in the same grinding conditions, and by rough working, a working altered layer in which residual stress is generated by the rough working is removed. Furthermore, the slit back surface 1e, the slide surface 1a, the slit surface 1c, and the combined surface 1d undergo camber removal by using the same grindstone in the same grinding conditions. Finally, the slit back surface 1e, the slide surface 1a, the slit surface 1c, and the combined surface 1d undergo finish working by using the same grindstone in the same grinding conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a photographic film,
Photographic paper, magnetic recording tape, adhesive tape, pressure-sensitive paper,
The present invention relates to a coater die used for producing a thermal paper, a photosensitive offset plate and the like, for applying various coating liquids to a running support, and a processing method thereof.

[0002]

2. Description of the Related Art A coating apparatus for applying various coating liquids to a running support using a coater die is disclosed in Japanese Patent Publication No. 33-89.
No. 77, Japanese Patent Application Laid-Open No. 6-335563, Japanese Patent Application Laid-Open
Japanese Patent Application Laid-Open No. 328509/1996, Japanese Patent Application Laid-Open No. 8-243462, and the like. These publications disclose a coating apparatus that extrudes a coating liquid from a slit, feeds the coating liquid onto an inclined plane, and applies the coating liquid to a running support. An apparatus (extrusion coating apparatus) and the like are described.

[0003] In these coating apparatuses, a schematic view of a coating apparatus of a type in which a coating liquid is fed onto an inclined plane and applied by flowing down is shown in FIG. 1, and a perspective view of a coater die is shown in FIG.
Shown in

In both figures, a plurality of coater dies 1 are arranged near a backup roller 4 which rotates while supporting a support 3. The coating liquids 6a, 6b, 6c supplied to the coater die 1 from the respective liquid supply holes 5 are spread in the width direction in the manifold 1b of the coater die 1, are rectified by the slit 2, and flow down the slide surface 1a. Then, the support 3 is applied as a multilayer coating film.

[0005] The main purpose of the coater die 1 is to obtain a uniform coating distribution.
Is required to be uniform, and since the slits 2 are formed by the gaps between the adjacent coater dies 1, the processing accuracy of the individual coater dies 1 becomes very important.

As the material of the coater die 1, precipitation hardening stainless steel, austenitic stainless steel, martensitic stainless steel, heat-resistant alloy, super steel, titanium alloy, and other industrial steel materials are used.

[0007] A general method of manufacturing such a coater die 1 is to perform a roughing process as a primary process on a material using a cutting machine such as a milling machine, a machining machine, a planer, a drilling machine, and then use a grinding machine, a lapping machine or the like. It is manufactured by performing finishing as secondary processing. One example of such processing is described in Japanese Patent Application Laid-Open No. 7-328509.

[0008] Finishing is performed in the order of removal of processing traces generated by the roughing, warpage removal, and surface roughness finishing. The main purpose is to finish the surface with good surface roughness.

FIG. 3 is a schematic view of a general grinding machine used for this finishing. In the figure, the non-ground material 51 is fixed by a magnet chuck 52, and the grindstone 53 rotates and the magnet chuck 52 reciprocates in the direction of the arrow, and a grinding oil 54 is applied to prevent heat generation and clogging of the grindstone 53. Grinding is performed while being performed. Reference numeral 55 denotes an operation panel for performing various operations.

Table 1 shows a general example of the shaving amount (depth) when grinding the coater die in this way.

[0011]

[Table 1]

[0012] In this, the warping is an important processing,
Performed to improve the straightness and flatness of the coater die,
A coater die is temporarily installed on a table of a grinding machine, and when there is a gap with the table surface, an appropriate spacer is inserted to fix the coater die and grinding is performed. After the processing of one ground surface is completed, the surface is inverted and the other surface is ground. This inversion is repeated several times as necessary. Regarding the warp removal, refer to “Machining method (grinding)
Above "published by Japan Skills Education and Development Center and Japanese Patent Laid-Open No. 6-335
No. 653 is also described.

In the production of a coater die,
As described above, in order to make the flow rate distribution uniform, warping work is repeated several times to improve straightness and flatness, and a coater die that can be used is manufactured. Need time.

[0014]

At present, the flow rate distribution of the coating solution may be changed as compared with the time when the coater die of the coating device was first manufactured, which may hinder the coating production. The change in the flow rate distribution has a correlation with the slit of the coater die, and as a means for improving the slit, the slit must be improved by updating or reworking the coater die.

Table 2 shows an example of the flow distribution and the slit distribution immediately after the completion of the production of the coater die and one year after the completion. The data indicates the maximum variation width with respect to the average value.

[0016]

[Table 2]

Based on this fact, when the coater dies were measured immediately after the completion of the production of the predetermined coater die and one year after the completion, the shape change shown in Table 3 was observed. The measurement method is to set the coater dice close to the state of use,
A predetermined portion of the surface forming the slit was measured from one end to the other end in the width direction by a non-contact measuring device. The data shows the maximum variation width per meter.

[0018]

[Table 3]

In view of the above problems, a first object of the present invention is to provide a coater die capable of stabilizing a slit over time and, as a result, a flow rate distribution of a coating liquid, and a method of processing a coater die. Make it an issue.

Further, the coater dies of the conventional coating apparatus are not always at a satisfactory level even at the beginning of manufacture, and as a result of measuring the straightness of the existing coater dies after finishing, there may be variations among the individual coater dies. understood. As a result, the coater dice was
It was found that when used in combination, the straightness was affected, the uniformity of the slits was impaired, and a good coating distribution could not be obtained.

FIGS. 4 and 5 show the state of such a coater die. FIG. 4 shows that a coater die of four samples is set up in a state close to the use state, and a predetermined surface of the slit is placed at one end in the width direction. FIG. 5 is a distribution diagram in the width direction of the slit gap and the flow rate distribution measured by a non-contact measuring device from the top to the other end.

It is considered that the straightness of the coater die is ultimately determined by the stress, and the stress is considered to be the stress generated by the weight of the coater die itself in addition to the above-mentioned residual stress. There are also stresses due to temperature and pressure in use, and the balance of these stresses is balanced to determine the shape of the coater die, which appears as warping or twisting of the coater die.

Although the warping is performed in the finishing step as described above, the warpage cannot be sufficiently removed, and it is found that if the finishing is performed after the warping, the warping occurs again in another form. . In particular, in recent coater dies, the above-mentioned problem has become more remarkable due to the increase in width and thickness.

In view of such a problem, it is a second object of the present invention to improve the warping of a coater die and improve the straightness of the coater die.

Further, in order to further improve the coating distribution in the existing coater dies, the slit precision and the shape of the coater dies were measured. As a result, it was found that the straightness of each of the coater dies was not sufficient. Further, as a result of investigating the straightness of the coater die in more detail, it was found that the straightness was different between the slit surface (1c in FIG. 2) and the combination surface (1d in FIG. 2). If the straightness of the slit surface and the combined surface of the individual coater dies are different, when the coater dies are used in combination as shown in FIGS. 1 and 2, the uniformity of the slit is impaired, and a good coating distribution is obtained. It is easy to imagine that there is nothing.

With respect to such a problem, FIG. 6 shows a distribution diagram of the slits in the width direction obtained by combining the coater dies manufactured by the conventional method, and FIG. 7 shows a distribution diagram of the flow rate.

Further, FIG. 8 shows a distribution diagram of the shape difference between the slit surface and the combined surface of each coater die.

The present inventors have paid attention to the grinding operation in order to investigate the cause of the difference in shape between the slit surface of the coater die and the combined surface. It has been found that the grinding of the slit surface and the grinding of the combined surface have to be performed in different processes, and as a result, it has been found that when grinding one, the grinding oil is not sufficiently applied to the other. Furthermore, as a result of paying attention to the temperature of the coater die at the time of grinding, it was found that a temperature difference occurs between a portion where the grinding oil is sufficiently applied and a portion where the grinding oil is not applied. Grinding oil is used for the above reason and temperature control is basically performed to make it equal to the ambient temperature, but there is a difference of several degrees from the ambient temperature, and the coater die is combined with the slit surface Since it has a manifold on the surface, it has been confirmed that most of the grinding oil flows down from the manifold when one of the surfaces is ground, and the other does not sufficiently cover the other.

FIG. 9 shows this state. FIG. 9 is a diagram in which the combination surface 1d is processed while the grinding stone 53 is rotated and the grinding oil 54 is applied.
Is not enough.

FIG. 10 shows a distribution diagram of the slit surface and the combination surface of the coater die in a state where the grinding oil is applied.
As an example, the place where 25 ° C. grinding oil is applied is 2
Although it will be 5 ° C, the part where the grinding oil is not applied much is 26-
27 ° C.

In view of the above problems, it is a third object of the present invention to propose a method of processing a coater die and a grinding machine for making the temperature variation of the coater die uniform during grinding.

[0032]

The above first object can be attained by one of the following constitutions.

(1) Equipped with a coater die for extruding a coating solution from a slit and feeding it onto an inclined plane to flow down, or extruding a coating solution from one hole and applying it to a running support. In the coating device, a rough coater was used to perform roughing by cutting from the material, and the affected layer in which residual stress was generated by the roughing was removed by grinding, and a coater die that was finished by grinding was provided. A coating device characterized by the above-mentioned.

(2) Equipped with a coater die for extruding the coating liquid from the slit and feeding it on an inclined plane to flow down, or extruding the coating liquid from one hole and applying it to a running support. In the coating device, a rough coater was used to perform rough processing by cutting the raw material, heat treatment was performed under the same conditions as the heat treatment performed before the rough work was performed after the rough work, and finish processing was performed by grinding. A coating device characterized by the above-mentioned.

(3) Equipped with a coater die for extruding a coating solution from a slit and feeding it on an inclined plane to flow down, or extruding a coating solution from one hole and applying it to a running support. In the coating device, a rough coat was performed by cutting from the material, finishing was performed by grinding, and a coater die that was subjected to heat treatment under the same conditions as the heat treatment performed before the rough processing was performed after the finish processing. A coating device characterized by the above-mentioned.

(4) Equipped with a coater die for extruding the coating liquid from the slit and feeding it on an inclined plane to flow down, or extruding the coating liquid from one hole and applying it to the running support. A coating apparatus, comprising: a coater die that performs a roughing process on a material by electric discharge machining and a finishing process by a grinding process.

(5) Equipped with a coater die for extruding the coating solution from the slit and feeding it on an inclined plane to flow down, or extruding the coating solution from one hole and applying it to a running support. A coating apparatus, comprising: a coater die which is formed by performing rough processing by cutting a material and finishing by electrolytic polishing.

(6) Processing of a coater die for extruding a coating solution from a slit and feeding it on an inclined plane to flow down, or extruding a coating solution from one hole and applying it to a running support In the method, there is a step of performing rough processing by cutting from a raw material, a step of removing a work-affected layer in which residual stress has been generated by the rough processing by grinding, and a step of performing finish processing by grinding. A method for processing a coater die.

(7) Processing of a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying it to a running support In the method, the method has a step of performing rough processing by cutting from a material, a step of performing heat treatment under the same conditions as the heat treatment performed before the rough processing, and a step of performing finish processing by grinding. A method for processing a coater die.

(8) Processing of a coater die for extruding a coating solution from a slit and feeding it on an inclined plane to flow down, or extruding a coating solution from one hole and applying it to a running support. In the method, the method includes a step of performing rough processing by cutting from a material, a step of performing finish processing by grinding, and a step of performing heat treatment under the same conditions as the heat treatment performed before the rough processing after the finish processing. A method for processing a coater die.

(9) Processing of a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying it to a running support A method for processing a coater die, comprising: a step of performing rough machining on a material by electric discharge machining; and a step of performing finish machining by grinding.

(10) Processing of a coater die for extruding a coating solution from a slit and feeding it on an inclined plane to flow down, or extruding a coating solution from one hole and applying it to a running support A method for processing a coater die, the method comprising: a step of performing rough processing by cutting from a material; and a step of performing finish processing by electrolytic polishing.

The second problem is solved by one of the following constitutions.

(1) Equipped with a coater die for extruding a coating solution from a slit and feeding it on an inclined plane to flow down, or extruding a coating solution from one hole and applying it to a running support. In a coating device, a step of performing rough processing by cutting from a material, a step of performing rough grinding, and performing a warp-off process under the same grindstone and grinding conditions as those used for the rough grinding. A coating device comprising a coater die processed in the steps.

(2) Equipped with a coater die for extruding the coating liquid from the slit and feeding it on an inclined plane to flow down, or extruding the coating liquid from one hole and applying it to the running support. A coating apparatus, wherein the coater die is fixed to a jig so as to be equal in bending and warpage during use, and is subjected to a warping process.

(3) Processing of a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying it to a traveling support. In the method, a step of performing rough processing by cutting from a material, a step of performing rough grinding, and a step of performing warp processing under the same grindstone and grinding conditions as the grindstone and grinding conditions used for the rough grinding. A method for processing a coater die, comprising:

(4) Processing of a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying it to a running support A method for processing a coater die, comprising: fixing the coater die to a jig so as to be equal to bending and warping during use;

(5) The coating liquid is extruded from the slit and fed onto an inclined plane to be allowed to flow down, or the coating liquid is extruded from one hole to warp a coater die for applying to a running support. What is claimed is: 1. A jig to be fixed at the time of machining, wherein a groove or unevenness is formed on a joint surface with a coater die.

The third problem is solved by any of the following constitutions.

(1) Equipped with a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying it to a running support. A coating device provided with a coater die in which a grinding oil is applied to the entire coater die to perform a grinding process.

(2) Processing of a coater die for extruding a coating solution from a slit and feeding it on an inclined plane to flow down, or extruding a coating solution from one hole and applying it to a running support A method for processing a coater die, wherein a grinding oil is applied to the entire coater die to perform a grinding process.

(3) The coating liquid is extruded from the slit and fed onto an inclined plane to flow down, or the coating liquid is extruded from one hole to grind a coater die for coating on a running support. A grinding machine provided with a nozzle for applying grinding oil to the entire coater die.

[0053]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment]
An embodiment for solving the above problem will be described with reference to FIGS.

The present inventors have considered the cause of the change in the surface on which the slit is formed with the passage of time, and as a result, paid attention to the work-affected layer during the production of the coater die. What is a work-affected layer?
It is located below the surface layer generated by the contamination of the processing atmosphere or the transfer of the skin material of the tool, and is composed of a Bayleby layer, an ultrafine crystal layer, an oxide layer, a fiber structure layer, a plastic deformation layer, and an elastic deformation layer.

It is generally known that a residual stress is present in a work-affected layer. The residual stress during the processing includes the residual stress in a rough processing by a cutting machine such as a milling machine, a machining machine, a planer, a drilling machine, and the like. There is residual stress in finishing work with a grinding machine, lapping machine, or the like.

Therefore, the coater dice were cut in a stepwise manner from the surface by electropolishing in which no external force was mechanically applied, and the shape at that time was measured. The results are shown in FIGS. 11 and 12, where FIG. 11 shows the amount of electrolytic polishing from the surface layer of the coater die in roughing and the amount of change from the initial value, and FIG. 12 shows the amount of electrolytic polishing from the surface layer of the coater die in grinding. The polishing amount and the change from the initial value are shown. As a sample of the coater die in the grinding process, a sample which was cut from the data of the rough processing shown in FIG. 11 by electrolytic polishing until the influence of the residual stress of the rough processing disappeared was used.

As a result, in both FIGS. 11 and 12, a change was observed in the shape as the surface was cut from the surface layer, and it was confirmed that the shape was stable when the surface was cut deeper than a certain amount. That is, FIG.
In the rough processing described in the above, it is stable when it is cut to a depth of about 300 to 500 μm, and in the grinding processing in FIG. Especially,
In the grinding process, it was confirmed that the shape greatly changed even if the depth was small.

The cause of the change in the shape is determined to be the residual stress in the roughing and the grinding. In general cutting and grinding processing, a damaged layer is brought to the processing surface,
It is known from the literature that residual stress is generated in the work-affected layer and exists as tensile and compressive stress in the surface layer. It is easy to imagine that when the residual stress changes, the warpage and twist of the material change. Further, the curves of the amount of change shown in FIGS. 11 and 12 approximate the curves of the tension and compression of the residual stress. This suggests that the above judgment is appropriate.

Further, as shown in Table 1, the grinding depth by the conventional grinding is 50 to 200 μm, while the depth of the residual stress by the rough processing is about 300 to 500 μm. It is considered that the residual stress of, and the residual stress during grinding remain.

References regarding residual stress include:
"Grinding Engineering" edited by the Society of Precision Engineering, "Mechanical Research, No. 38,
No. 5 "," Dictionary of Cutting, Grinding and Polishing ", edited by the Japan Society of Abrasive Processing.

According to the results of the above examination, the change with time of the coater die is caused by the fact that the residual stress generated during the manufacture of the coater die is relaxed or disappears with the lapse of time, so that the shape of the coater die changes and the slit gap also changes. Thought that the flow distribution would change. Then, by removing the residual stress, it was decided to suppress the temporal change of the coater die. As described above, residual stress can be roughly classified into that by rough working and that by finish working, and the effect was confirmed as in the following examples.

<Examples> Table 4 shows a comparative example according to the conventional method and six examples, but the following conditions are common.

Material of coater die: Precipitation hardening stainless steel SUS630 Shape measuring method: A non-contact measuring device from one end to the other end in the width direction of a predetermined portion of the slit surface in a state close to the state of use.・ Aqueous gelatin solution: viscosity = 40 cp ・ Flow rate: 10 cc / cm / min Comparative Example: Conventional method Example 1: After roughing, the affected layer in which residual stress was generated by the roughing was removed by grinding, and then processed as usual. Finished by grinding. The amount of removal was 500 μm from the above results.
m or more.

Example 2 A re-heat treatment was performed after the rough processing, and the work was finished by grinding as usual. However, the heat treatment condition is the precipitation hardening condition, and the heating temperature is the precipitation hardening temperature (40
0 ° C. to 700 ° C.).

Example 3 Roughing was performed by electric discharge machining with small residual stress, and finished by grinding as usual.

Example 4: Finished by electrolytic polishing in which almost no residual stress occurs after the usual rough processing.

Example 5: After finishing as usual, a reheat treatment was performed.

Example 6: After removing the residual stress in the rough processing, finishing was performed by electrolytic polishing.

[0069]

[Table 4]

The difference in shape is the difference between the maximum variation width between the shape immediately after completion of manufacture and the shape one year later, and the amount of change in the flow rate distribution is the difference between the flow rate distribution at the start of use and the flow rate distribution one year later. This is the difference in maximum variation width.

[Second Embodiment] Three types of embodiments for solving the above-mentioned second problem will be described in detail with reference to FIGS.

(1) Embodiment 1 This embodiment is a method in which the state of balance of the residual stress on the surface of the coater die is adjusted in advance to the state of balance of the residual stress after finishing, and then the warping is performed. The present inventors have found that when the same grindstone is used for grinding under the same grinding conditions, substantially the same residual stress is generated on the processed surface. The slide surface 1a, the slit surface 1c,
An embodiment of the warping of the combination surface 1d and the slit back surface 1e will be described below. In addition, the code | symbol in each surface is shown in FIG.

The processing process up to the rough processing is the same as the conventional processing method.

In the rough grinding, the slit back surface 1e, the slide surface 1a, the slit surface 1c, and the combined surface 1d are ground using the same grindstone under the same grinding conditions.

Using the same grindstone for the slit back surface 1e, slide surface 1a, slit surface 1c, and combination surface 1d,
The warpage of the conventional method is performed under the same grinding conditions.

Using the same grindstone for the slit back surface 1e, the slide surface 1a, the slit surface 1c, and the combination surface 1d,
Finish grinding is performed under the same grinding conditions.

It is necessary that the surface roughness of the slit surface 1c of the coater die is a desired value. However, since the surface roughness is determined by the type of the grindstone, the grindstone used for finishing is a grindstone corresponding to the slit surface roughness. And

In the above-mentioned processing method, it is preferable to use the same grindstone as the finish processing, but in that case, the finish grinding processing becomes unnecessary.

(2) Embodiment 2 In this embodiment, a coater die is fixed with a resin in a state close to a use state and warping is performed. The processing method will be described below with reference to FIGS. explain.

First, a description will be given with reference to a perspective view shown in FIG.

In a grinding machine provided with a magnet chuck, the magnet chuck 22 is turned on to fix the jig 21. If you do not have a magnet chuck,
Fix the jig using bolts or the like.

The chuck surface 22a of the magnet chuck 22 needs to be finished in advance by self-dressing with high accuracy.

The block 25 is placed on the magnet chuck 22 close to the jig 21 so as to support the coater dice 1 in the same manner as when the coater dice 1 is supported in use.

The resin 26 ready to be cured is applied to the front surface of the slit forming surface opposite to the surface to be processed (the adjacent surface in the case of the slide surface processing).

The coater die 1 coated with the resin 26 is placed on the block 25 and gently pressed so that the entire surface of the resin contacts the jig 21. Further, the resin 26 is supplied as needed.

The coater dice 1 is allowed to stand until the resin 26 is sufficiently cured.

After the resin 26 has hardened, the grindstone 23 of the grinder is ground at an appropriate angle. The state of this grinding is shown in FIGS. 14 (A) to 14 (C). The surfaces to be ground at this time are the slit surface 1c and the slide surface 1a. The grindstone 23a shown in FIG. 14 (A) is processing the slit surface 1c.
Process a. The same applies to FIGS. 14B and 14C.

Although the purpose of the slide surface 1a is different from the purpose of making the slit dimensions uniform, from the viewpoint of making the flow rate uniform, if the coating liquid is inclined in the width direction of the slide surface while flowing down the slide surface 1a, Since the flow rate distribution is affected, the flatness of the slide surface 1a is also important.

Further, as a preferred mode, processing is performed with a grinder capable of appropriately setting the angle of the grindstone. However, when the coater die has a sufficient thickness, the angle of the slit surface in use is 0 to 0. At about 30 °, a large change in shape is not observed as compared with the case where the coater die is vertical, so that the surface may be finished as a vertical surface by vertical grinding. However, a slight change in the angle may cause a difference in shape depending on the size of the coater die.

The coater die 1 is separated from the jig 21 and the cured resin 26 is removed.

On the basis of the processed surface, the opposite surface is ground by the same processing method as described above.

Alternatively, the opposite surface may be ground by surface grinding with respect to the processed surface, and the surface may be further inverted and ground again by surface grinding under the same conditions.

The amount of the resin used in the above-mentioned attaching operation largely depends on the skill of the operator, and it is difficult for an inexperienced person to apply an appropriate amount. If the amount of resin is small, cavities are formed, and the original purpose cannot be achieved.
If the amount of resin is large, the coater dice 1
As shown in FIG.
As shown in (1), there is a problem that the resin 26 flows down before being cured.

Therefore, in order to create a situation that prevents the resin from flowing out between the coater die and the jig, and to perform a stable attachment without being affected by the amount of the applied resin, the coater shown in FIGS. Grooves or irregularities were provided on the surface of the jig to which the dies were attached.

FIG. 16 is a view in which a lateral groove is provided in the jig, FIG. 16 (A) is a perspective view, and FIG. 16 (B) is a side view. In the figure, a coater die coated with resin is attached to a lateral groove of a jig 31 fixed by a magnet chuck. 25 is a block.

FIG. 17 is a view in which a vertical groove is provided in the jig, FIG. 17 (A) is a perspective view, and FIG. 17 (B) is a partially enlarged view of the vertical groove.

FIG. 18 is a view showing a jig provided with projections and depressions, FIG. 18A is a perspective view, and FIG. 18B is a partially enlarged view of projections and depressions.

Table 5 shows a comparison of workability when using a conventional flat jig (Comparative Example) and when using such three kinds of jigs (Examples 1 to 3).

[0099]

[Table 5]

The amount of the resin applied is 500 to 3000 c.
c / m ² .

The resin used was “cold-curable resin” embedded resin No. of Marumoto Kogyo Co., Ltd. 105, but other equivalent cold-cured resins can also be used.

As described above, by providing the jig with grooves or irregularities, the work of attaching the coater die is stable, and anyone can easily perform the work.

As for the groove dimensions, dimensions other than those shown in the embodiments can be considered, but if the grooves are too wide, the original purpose of holding the coater die is impaired. On the other hand, if the convex portion is too wide, it does not help to prevent the resin from flowing down. Further, it is necessary to clean the jig after the operation. Therefore, the following ranges are preferable as the groove dimensions.

Protrusion length (S): 0.5 to 20 mm Concave groove length (L): 1.0 to 40 mm Groove depth (H): 0.5 to 10 mm Although the attaching operation is the same as the case of the lateral groove shape, it is somewhat difficult compared to the lateral groove shape in consideration of the production of the jig and the cleaning after the operation.

(3) Third Embodiment In this embodiment, the coater dice is fixed in a use state by a shim made of a thickness tape or the like, and warping is performed.

The coater die is fixed by the same supporting method as in the use state.

The straightness of the surface opposite to the side surface of the slit is measured using a laser displacement meter to obtain a profile in the width direction.

A straight line connecting both ends of the profile in the width direction on the side surface of the slit is drawn, and the distance between the profile in the width direction and the straight line is calculated in increments of 10 mm in the width direction. Note that this straight line assumes the surface of the magnet chuck of the horizontal surface grinding machine.

The slit side face is placed on the horizontal surface grinder with the slit side facing downward, and between the slit side face and the magnet chuck, a thickness tape having the same thickness as the distance previously calculated is inserted and fixed.

The profile in the width direction on the side surface opposite to the side surface of the slit is measured with a laser displacement meter, and is compared with the profile measured when the device is fixed in use. If there is a difference in the profile as a result of the comparison, re-insert the thickness tape so that the profile becomes the same.

The side surface opposite to the side surface of the slit is ground.

The opposite side surface is fixed to the magnet chuck with the side surface facing down, and the side surface of the slit is ground.

Table 6 below shows examples in which the above three embodiments were carried out and the amount of warpage and the flow rate distribution in the width direction were measured. Processing is roughing, rough grinding, warping,
Performed in the order of finishing.

Example 1 Before the warping process, the surface of the coater dice was processed to have the same stress balance as that of the finished state, and then fixed with a resin in a state close to the use state, and the warping was performed.

Example 2 Before the warping process, the surface of the coater die was processed to have the same stress balance as that of the finished state, and then fixed by a shim in a state close to the use state, and the warping process was performed.

Example 3 A resin was fixed in a state close to a use state by a resin, and was subjected to a warping process.

Example 4: The product was fixed by a shim in a state close to the use state, and was subjected to a warping process.

Example 5: Before the warping, the surface of the coater die was processed to have the same stress balance as the finished state, and then the conventional warping was performed.

Comparative Examples 1, 2, 3: Conventional warping was performed.

[0120]

[Table 6]

FIG. 19 and FIG. 20 show distribution diagrams improved by the present invention. FIG. 19 shows that a coater die of four samples is set up in a state close to a use state, and a predetermined surface of a slit is made to have a width. FIG. 20 is a distribution diagram measured by a non-contact measuring device from one end to the other end in the direction, and FIG. 20 is a distribution diagram in the width direction of the slit and the flow rate distribution.

[Third Embodiment] An embodiment which solves the third problem will be described in detail with reference to FIG.

FIG. 21 is a diagram in which a grinding oil blowing nozzle is added for grinding. The combined surface 1d of the coater die 1 is ground by the grindstone 53, but is ground to the combined surface 1d by the grinding oil blowing nozzle 57. In addition to applying the oil 54, the grinding oil 54 is also applied to the slit surface 1c by another grinding oil blowing nozzle 58 so as to equalize the temperature of the coater die 1 so that there is no temperature variation.

Table 7 shows an example of the grinding process.
3 types are shown. In addition, a grinding oil blowing nozzle is added from the grinding oil supply device in the existing grinding machine so that the grinding oil is applied to the entire coater die. 25 ° C. and room temperature were set at 24-26 ° C.

The flow rate of the grinding oil applied to the coater die was 0.5 L / min in Example 1, 2 L / min in Example 2,
In Example 3, the flow rate was set to 10 L / min. The comparative example is a conventional method.

[0126]

[Table 7]

The meaning of each item in Table 7 is as follows.

Temperature difference: temperature variation of the coater die during grinding Shape difference: shape difference between the slit portion of the coater die and the combined surface Slit gap variation: maximum value-minimum value Flow rate distribution: flow rate distribution actually used (maximum) (Dispersion width) As described above, by sufficiently applying the grinding oil to the entire coater die, the shape of the slit surface of the coater die and the shape of the combined surface matched. Further, the slit gap obtained by combining the coater dies manufactured by the present method could be made uniform, and the application distribution was stabilized.

If the flow rate of the grinding oil applied to the coater die is small, the effect is not sufficient, and it is necessary to apply at least the entire surface of the coater die. According to the present embodiment,
A supply of 2 L / min or more is preferred.

In each of the embodiments described in detail above, a coating apparatus is of a type in which a coating solution is extruded from a slit to a running support and fed onto an inclined plane, and then applied by flowing down. The present invention is not limited to such a coater die, but is also applicable to a coater die used in a coating apparatus (extrusion coating apparatus) for extruding and applying a coating solution through a slit. it can.

The processing method of the present embodiment is not limited to the coater die, but can be applied to the manufacture of a wide-width cutter blade requiring high precision.

[0132]

According to the coating apparatus of the present invention, since the residual stress is removed and the surface accuracy of the slit is stabilized with time, the flow rate distribution of the coating liquid is also stabilized, and the film of the coated product is formed. The pressure can be made uniform.

According to the method for processing a coater die according to the present invention, since a residual stress is removed and a coater die with a stable surface accuracy of the slit over time is obtained, the flow rate distribution of the coating liquid is also stable. In addition, the film pressure of the coated product can be made uniform.

According to the coating apparatus of the present invention, since the straightness of the coater die is improved by improving the warp processing, the flow rate distribution of the coating liquid is also stabilized, and the film pressure of the coated product is made uniform. Can be achieved.

According to the method for processing a coater die according to claims 26 to 30, since the straightness of the coater die is improved by improving the warping, the flow rate distribution of the coating liquid is also stabilized and the film pressure of the coated product is improved. Can be made uniform.

According to the jig of the present invention, the resin does not flow down between the coater die and the jig, and a stable coating of the coater die can be performed without being affected by the amount of the resin applied. Become.

According to the coating apparatus of the present invention, since the temperature of the coater die can be uniformly processed, the straightness of the coater die is improved, and as a result, the flow rate distribution of the coating liquid is stabilized, and the coating product is manufactured in a stable manner. The film pressure can be made uniform.

According to the method for processing a coater die according to claim 33, since the temperature of the coater die can be uniformly processed, the straightness of the coater die is improved, and as a result,
The flow rate distribution of the coating liquid is also stable, and the film pressure of the coated product can be made uniform.

According to the grinding machine of the thirty-fourth aspect, since the temperature of the coater die can be uniformly processed, the straightness of the coater die is improved, and as a result, the flow rate distribution of the coating liquid is stabilized, and The film pressure can be made uniform.

[0140] According to the coated products described in claims 35 and 36, it is possible to obtain a coated product having a uniform film pressure.

[Brief description of the drawings]

FIG. 1 is a schematic view of a coating apparatus.

FIG. 2 is a perspective view of a coater die.

FIG. 3 is a schematic diagram of a grinding machine.

FIG. 4 is a distribution diagram of a conventional slit surface in the width direction.

FIG. 5 is a distribution diagram of a conventional slit and flow rate in the width direction.

FIG. 6 is a conventional distribution diagram of slits in the width direction.

FIG. 7 is a conventional flow rate distribution diagram in the width direction.

FIG. 8 is a distribution diagram of a shape difference between a conventional slit surface and a combination surface.

FIG. 9 is a view of a conventional grinding process in which grinding oil is applied.

FIG. 10 is a distribution diagram of a conventional slit surface and a combination surface.

FIG. 11 is a graph showing the amount of electropolishing from the surface layer of a coater die and the amount of change from an initial value in rough processing.

FIG. 12 is a graph showing the amount of electropolishing from the surface layer of a coater die and the amount of change from an initial value during grinding.

FIG. 13 is a perspective view in which a coater dice is fixed in a use state and warping is performed.

FIG. 14 is a side view in which a coater die is stuck to a jig with a resin.

FIG. 15 is a side view of the coater die in a state where the resin has flowed down.

FIG. 16 is a perspective view and a side view in which a lateral groove is provided in the jig.

FIG. 17 is a perspective view and a partially enlarged view in which a vertical groove is provided in a jig.

18A and 18B are a perspective view and a partially enlarged view of the jig provided with irregularities.

FIG. 19 is a distribution diagram of slit surfaces in the width direction in the present embodiment.

FIG. 20 is a distribution diagram of slits and flow rates in the width direction in the present embodiment.

FIG. 21 is a diagram of a grinding process in a state where grinding oil is applied in the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coater die 1a Sliding surface 1b Manifold 1c Slit surface 1d Combination surface 1e Slit back surface 2 Slit 3 Supports 6a, 6b, 6c Coating liquid 21 Jig 22, 52 Magnet chuck 25 Block 26 Resin 53 Grinding stone 54 Grinding oil

Claims (36)

[Claims] 1. A coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. The coating device has a coater die that performs rough processing by cutting from the material, removes the affected layer where residual stress has been generated by the rough processing by grinding, and finishes by grinding. A coating device characterized by the above-mentioned. 2. The coating apparatus according to claim 1, wherein at least an amount equal to or greater than the affected layer is removed by grinding the coater die. 3. The coating apparatus according to claim 2, wherein the removal amount of the affected layer is 300 μm or more. 4. The coating apparatus according to claim 2, wherein the removal amount of the affected layer is 500 μm or more. 5. A coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. In the coating device, a rough coater die is formed by performing a roughing process on the material by a cutting process, performing a roughing process on the same condition as the heat treatment performed before the roughing process, and performing a finishing process by a grinding process. Characteristic coating device. 6. A coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. In the coating device, a rough coater is provided by performing a roughing process by cutting from a material, performing a finishing process by a grinding process, and performing a heat treatment under the same conditions as the heat treatment performed before the roughing process after the finishing process. Characteristic coating device. 7. The coating apparatus according to claim 5, wherein the material of the coater die is a precipitation hardening stainless steel, and the heat treatment is performed under the same conditions as the precipitation hardening treatment. 8. A coater die for extruding a coating liquid from a slit and feeding it onto an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. A coating apparatus, comprising: a coater die that performs rough machining from a material by electric discharge machining and finishes by grinding. 9. A coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. A coating apparatus, comprising: a coater die that performs rough processing by cutting a material and finish processing by electrolytic polishing. 10. The coater die according to claim 9, further comprising a coater die that has been subjected to a finishing process by electrolytic polishing after removing a deteriorated layer having a residual stress generated by the roughing process by a grinding process. Coating equipment. 11. A method of processing a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. In the method, there is provided a step of performing a rough processing by a cutting process from a material, a step of removing a deteriorated layer having a residual stress caused by the rough processing by a grinding process, and a step of performing a finishing process by a grinding process. A method for processing a coater die. 12. The method according to claim 1, wherein at least an amount equal to or greater than that of the affected layer is removed by grinding.
The method for processing a coater die according to claim 1. 13. The removal amount of the affected layer is 300 μm.
13. The method for processing a coater die according to claim 12, wherein: 14. The removal amount of the affected layer is 500 μm.
13. The method for processing a coater die according to claim 12, wherein: 15. A method for processing a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. In the method, there is provided a step of performing rough processing by cutting from a material, a step of performing heat treatment under the same conditions as the heat treatment performed before the rough processing after the rough processing, and a step of performing finish processing by grinding. Characteristic method of processing coater dies. 16. A method of processing a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. In the method, there is a step of performing rough processing by cutting from a material, a step of performing finish processing by grinding, and a step of performing heat treatment under the same conditions as the heat treatment performed before the rough processing after the finish processing. Characteristic method of processing coater dies. 17. The material of the coater die is a precipitation hardening stainless steel, and the heat treatment is performed under the same conditions as the precipitation hardening treatment.
4. The method for processing a coater die according to 4. 18. A method of processing a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying it to a running support. The method for processing a coater die according to any one of claims 1 to 3, further comprising the steps of: performing a rough machining of the material by electric discharge machining; and a step of performing a finish machining by grinding. 19. A method of processing a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. The method for processing a coater die according to any one of claims 1 to 3, further comprising a step of performing rough processing by cutting the raw material and a step of performing finishing processing by electrolytic polishing. 20. The coater according to claim 19, further comprising: a step of removing a damaged layer in which residual stress is generated by the rough processing by grinding, and a step of performing finishing by electrolytic polishing. Die processing method. 21. A coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. In the coating apparatus, a step of performing rough processing by cutting from a material, a step of performing rough grinding, and a step of performing a warp processing under the same grindstone and grinding conditions as those used in the rough grinding. And a coater die processed by the method. 22. A coater die for extruding a coating liquid from a slit and feeding it onto an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. A coating apparatus, wherein the coater die is fixed to a jig so as to be equal in bending and warpage during use, and is subjected to a warping process. 23. The coating apparatus according to claim 22, wherein the coater die is fixed to a jig with a resin. 24. The coating apparatus according to claim 23, wherein a groove or unevenness is formed on a bonding surface of the jig with a coater die. 25. The coating apparatus according to claim 22, wherein said coater die is fixed to a jig by a shim. 26. A method of processing a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. A step of performing rough processing by cutting from a material, a step of performing rough grinding, and a step of performing warping under the same grindstone and grinding conditions as the grindstone and grinding conditions used for the rough grinding. A method for processing a coater die, comprising: 27. A method of processing a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. The method for processing a coater die according to any one of claims 1 to 3, wherein the coater die is fixed to a jig so as to be equal to the bending and warping during use, and the warping is performed. 28. The method according to claim 27, wherein the coater die is fixed to a jig with a resin. 29. The method for processing a coater die according to claim 28, wherein a groove or unevenness is formed on a joint surface of the jig with the coater die. 30. The method for processing a coater die according to claim 27, wherein the coater die is fixed to a jig by a shim. 31. A coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying it to a running support. A jig for fixing at the time of processing, wherein a groove or unevenness is formed on a joint surface with a coater die. 32. A coater die for extruding a coating liquid from a slit and feeding it onto an inclined plane to flow down, or extruding a coating liquid from one hole and applying the coating liquid to a running support. A coating apparatus, comprising: a coater die in which a grinding oil is applied to the entire coater die to perform a grinding process. 33. A method for processing a coater die for extruding a coating liquid from a slit and feeding it on an inclined plane to flow down, or extruding a coating liquid from one hole and applying it to a running support. The method for processing a coater die according to any one of claims 1 to 3, wherein grinding is performed by applying a grinding oil to the entire coater die. 34. A coating liquid is extruded from a slit and fed onto an inclined plane to flow down, or a coating liquid is extruded from one hole to grind a coater die for coating on a running support. A grinder, wherein a nozzle for applying a grinding oil to the entire coater die is provided. 35. A coated product, wherein a coating liquid is applied to a support by the coating device according to any one of claims 1 to 10 and 21 to 25. 36. The coated product according to claim 35, wherein the product is any one of a photographic film, a photographic paper, a magnetic recording tape, an adhesive tape, a pressure-sensitive paper, a thermal paper, and a photosensitive offset plate. The coated product according to the above.