JP4291433B2 - Die coater painting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a die coater coating apparatus for forming a stable continuous pattern on the surface of a substrate (work) such as a long thin metal plate or a plastic film.
[0002]
[Prior art]
Conventionally, as a technology for continuously forming patterns such as bands, streaks and stripes on a long base material with two kinds of paints using a die coater coating apparatus, it is described in JP-B-64-106. There is something that was done.
[0003]
That is, in this coating apparatus, patterns such as bands, streaks, and stripes formed on the substrate are formed by laminar flows of different types of paint in the trench.
[0004]
[Problems to be solved by the invention]
However, in the above coating equipment, the pattern is formed only by laminar flow of different types of paints in the trench, so pattern management is difficult and the pattern is not clear and the pattern is unclear in continuous painting. In some cases, it is difficult to form a stable pattern. In addition, the pattern itself is simple, and it is difficult to form a complicated and deep pattern.
[0005]
[Means for Solving the Problems]
In order to solve such a problem, the present invention provides a mixing rod in the cavity of the die so that the paint supplied into the cavity is further stirred by the resistance of the mixing rod, The present invention proposes a die coater coating apparatus capable of forming a pattern stably and continuously by twisting, and capable of forming a more complicated and deep pattern.
[0006]
Furthermore, by rotating the mixing rod in the cavity as it is or by performing repeated movement along the cavity, it is possible to further promote stirring, mixing and twisting motion between the paints, and stably The present invention proposes a die coater coating apparatus that can form a pattern continuously and can form a more complicated and deep pattern.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a typical example of a die coater coating apparatus according to the present invention will be described in detail with reference to the drawings. 1 and 2 are explanatory views showing an outline of a die coater coating apparatus according to the present invention, A is a die coater coating apparatus, FIG. 1 (a) is a perspective view thereof, and FIG. FIG. 2A is a cross-sectional view, and FIG. 2B is an enlarged view of a portion of FIG. 2A.
[0008]
The shape of the die 1 is a substantially square die 1, the head 2 facing the base material B on one side of the die 1, and a narrow cavity having an arbitrary cross-sectional shape (in the figure, a semicircular cross-section) at a substantially central portion of the head 2. 3 (coating groove) is formed. Further, in the cavity 3, a mixing rod 4 having a rod shape and an arbitrary diameter is arranged in parallel with the cavity 3.
[0009]
Furthermore, a notched and sharp edge 5 is formed at the upper end of the head 2, and a mixing chamber 6 is provided in the die 1 so as to be parallel to the cavity 3. A first pipe 7 for supplying the base paint α is installed in the back, and a second pipe 8 for supplying the marker paint β is installed in the middle of the first pipe 7.
[0010]
The cavity 3 and the mixing chamber 6 are connected by a plurality of connecting pipes 9, and a valve 10 that can be opened and closed is provided in the middle of each connecting pipe 9.
[0011]
As a mechanism for forming a pattern on the surface of the substrate B, the base paint α is supplied from the first pipe 7 and is different from the second pipe 8 as shown in FIGS. When the color marker paint β is supplied, the base paint α and the marker paint β are filled in the mixing chamber 6 and start to rotate, becoming semi-kneaded (half mixed, not completely), and the connecting pipe 9 Move in and move into the cavity 3.
[0012]
In the cavity 3, the laminar flow of the paint is further promoted due to the resistance of the mixing rod 4, and further stirring and twisting are performed, and the surface of the base material B moves in the direction of the arrow, whereby the base material B Continuously complex and deep strips, streaks, and striped patterns are stably formed on the surface. In practice, as shown in FIGS. 3 (b) and 4, the base material B is supported by a pack-up roll 11 which is also a support material and a conveying means, and is then applied to a drying or baking process. It is what is done.
[0013]
The base paint α and the marker paint β are made of one or more kinds of paints such as acrylic, urethane, epoxy, polyester, and fluororesin, and are different in at least the colors. Of course, the base paint α and the marker paint β may have different properties. Furthermore, one of the base paint α and the marker paint β may be supplied only as various pigments such as ink.
[0014]
In addition, a solvent that promotes mixing by rotation of the paint is mixed in one or both of the base paint α and the marker paint β. The solvent is premixed before reaching the die coater coating apparatus E, and is composed of one or more of alcohols, ketones, esters, glycol ethers, ethers, and hydrocarbons. is there.
[0015]
Note that the width of the band, streaks, and stripes, the interval between the stripes, and the like change depending on the flow ratio value of the base paint α and the marker paint β to be supplied and the amount ratio of the solvent. It can be arbitrarily selected.
[0016]
Further, as shown in FIG. 4, the edge 5 formed on the head 2 is installed with a distance (clearance) from the surface of the base material B as much as the length of the film to be coated, thereby improving paint cutting. It works to keep the thickness of the coating film constant.
[0017]
Further, in order to coat the entire surface of the base material B at a time, the width of the cavity 3 should be the same as or wider than the width of the base material B. What is necessary is just to make a width | variety narrower than the width | variety of the base material B, and it can carry out arbitrarily.
[0018]
In addition, the valve 10 adjusts the supply amount from each connection pipe 9 when filling the base paint α and the marker paint β into the cavity 3 to change the pattern as necessary. Specifically, it is composed of a rotary air valve or the like.
[0019]
Further, although not shown, two or more marker coatings β can be supplied to one base coating α to perform coating in which three or more different types of coatings are mixed.
[0020]
The die coater coating apparatus A shown in FIG. 5 (a) and FIG. 5 (b), which is an enlarged view of the portion B in FIG. 5 (a), has both ends of the mixing rod 4 arranged in the cavity 3. In addition, the drive device 12 is mounted. The drive device 12 is composed of, for example, a servo motor and the like, and causes the mixing rod 4 to perform a rotational motion as indicated by an arrow as shown in FIG. 5B.
[0021]
The die coater coating apparatus A shown in FIG. 6 (a) and FIG. 6 (b), which is an enlarged view of the portion C of FIG. 6 (a), is repeated such that the mixing rod 4 is indicated by an arrow along the cavity 3. A die coater coating apparatus A shown in FIG. 7 (a) and FIG. 7 (b), which is an enlarged view of a portion of FIG. 7 (a), is a device that simultaneously performs rotational movement and repetitive movement. Is shown.
[0022]
That is, the mixing rod 4 performs rotational movement and repetitive movement in the cavity 3 to further promote the stirring, mixing, and twisting of the paints, and stably and continuously form a pattern. It is possible to form a more complicated and deep pattern.
[0023]
In addition, the setting of the speed direction, time lag, etc. of rotation and repetitive motion can be performed arbitrarily.
[0024]
[Other examples]
What has been described above is a typical embodiment of the die coater coating apparatus according to the present invention, and the members shown in FIGS. 8 to 14 can be used, or the die coater coating apparatus A can be used.
[0025]
8-10 is explanatory drawing which shows the modification of the mixing rod 4, FIG. 8 (a) shows the protruding item | line 13 along a longitudinal direction, FIG.8 (b) shows the groove item 14, FIG. (C) is an example in which fins 15 are formed, FIG. 8 (d) is a triangular cross section, FIG. 8 (e) is a polygonal shape, and FIG. 8 (f) is an example of a mixing rod 4 formed in a star shape. It is.
[0026]
9A is an example in which a plurality of grooves 16 are formed along the outer periphery, FIG. 9B is an example in which the grooves 16 are formed in a spiral shape, and FIG. 9C is a diagram in which the diameter is changed at an arbitrary pitch. For example, FIG. 9D is an example in which a plurality of needle-like objects 17 are projected on the outer periphery, FIGS. 10A and 10B are examples in which paddle-like or fin-like protrusions 18 are formed, and FIG. Is an example of the mixing rod 4 having a hollow inside and a plurality of through holes 19 formed on the outer periphery.
[0027]
Each of these mixing rods 4 has a shape that changes the laminar flow by resistance, and promotes twisting and stirring.
[0028]
FIG. 11 is a modification of the arrangement position of the mixing rod 4 in the cavity 3. FIGS. 11 (a) to 11 (d) show examples in which the installation positions are moved, and FIGS. 11 (e) and 11 (f) show examples. This is an example in which a plurality of mixing rods 4 are arranged.
[0029]
FIG. 12 shows a modification of the die coater coating apparatus A, in which an elastic body 20 that adjusts the width of the cavity 3 having a width to the vicinity of both ends of the head 2 is fitted in the cavity 3 to move the elastic body 20. This is effective when the width of the cavity 3 is adjusted, and the width to be coated is arbitrarily changed in accordance with the change in the width of the base material B.
[0030]
13 (a), FIG. 13 (b) which is an enlarged view of the portion of FIG. 13 (a), a perspective view of FIG. 14 (a), and a die coater coating apparatus A shown in the perspective view of FIG. 14 (b). The mixing rod 4 is also installed in the mixing chamber 6 to further promote the stirring, mixing and twisting motion between the paints, and can form a pattern stably and continuously. It is a device that can form complex and deep patterns.
[0031]
【The invention's effect】
As described above, according to the die coater coating apparatus according to the present invention, by installing the mixing rod in the cavity of the die, the paint supplied into the cavity is further stirred by the resistance of the mixing rod, By twisting in the cavity, a pattern can be stably and continuously formed, and a more complicated and deep pattern can be formed. There are features and effects.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a typical example of a die coater coating apparatus according to the present invention.
FIG. 2 is an explanatory view showing a typical example of a die coater coating apparatus according to the present invention.
FIG. 3 is an explanatory view showing an example of use of a die coater coating apparatus according to the present invention.
FIG. 4 is an explanatory view showing an example of use of the die coater coating apparatus according to the present invention.
FIG. 5 is an explanatory view showing a typical example of a die coater coating apparatus according to the present invention.
FIG. 6 is an explanatory view showing a typical example of a die coater coating apparatus according to the present invention.
FIG. 7 is an explanatory view showing a typical example of a die coater coating apparatus according to the present invention.
FIG. 8 is an explanatory view showing another example of a mixing rod.
FIG. 9 is an explanatory view showing another example of a mixing rod.
FIG. 10 is an explanatory view showing another example of the mixing rod.
FIG. 11 is an explanatory view showing a modification of the arrangement position of the mixing rod.
FIG. 12 is an explanatory view showing another example of the die coater coating apparatus according to the present invention.
FIG. 13 is an explanatory view showing another example of the die coater coating apparatus according to the present invention.
FIG. 14 is an explanatory view showing another example of the die coater coating apparatus according to the present invention.
[Explanation of symbols]
α Base paint β Marker paint A Die coater coating device B Base material 1 Die 2 Head 3 Cavity 4 Mixing rod 5 Edge 6 Mixing chamber 7 First pipe 8 Second pipe 9 Connection pipe 10 Valve 11 Backup roll 12 Drive device 13 Convex Thread 14 Groove 15 Fin 16 Groove 17 Needle 18 Projection 19 Through hole 20 Elastic body

Claims (3)

In a die coater coating apparatus for continuously forming a pattern on the surface of a base material, a substantially square column die, a groove-like thin cavity formed on one side of the die, and a mixing rod installed in the cavity A die coater coating apparatus comprising a plurality of pipes connected in a cavity, and a pattern is formed by continuously supplying different types of paint from the pipes into the cavity. 2. The die coater coating apparatus according to claim 1, wherein the mixing rod installed in the cavity rotates. 3. The die coater coating apparatus according to claim 1, wherein the mixing rod installed in the cavity performs repetitive motion.

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