Marine water gauge, method for manufacturing the same, and method for installing the same

Abstract

To provide a marine water gauge suitable for installation in a sea water area or a brackish water area.SOLUTION: A marine water gauge 1 to be installed in a marine water area or a brackish water area includes: a substrate 11; a water level scale 12 provided on a front side of the substrate 11; and a protection layer 13 covering the front side of the water level scale 12. A portion arranged on an upper side in a vertical direction at the time of installation is defined as a fluorine area 1a in which a fluororesin layer 14a is provided on the front side of the protection layer 13. On the other hand, a portion arranged on a lower side in the vertical direction at the time of installation is defined as a silicone area 1b in which a silicone resin layer 14b is provided on the front side and the outermost layer of the protection layer 13.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a marine water marker and a method for manufacturing the same.The present invention also relates to a method for installing a marine water marker. [Background technology]

[0002] In bodies of water such as rivers, water gauges are sometimes installed to measure the water level visually or otherwise. An example of such a water gauge is the water gauge shown in FIG. 1 of Patent Document 1. As shown in the figure, the water gauge in this document is fixed to a vertical fixed surface 51 of a bridge pier 50, and is equipped with a number of scale plates 10 arranged vertically relative to the fixed surface 51. The water level of the river can be confirmed by reading the scales marked on the front surface of the scale plates 10.

[0003] Water gauges with scales painted on a steel or stainless steel base are also available. However, water gauges with scales painted on a base have the problem that the scales peel off or fade and deteriorate over time, and they must be replaced in a short period of time. In this regard, the scale plate 10 in the water gauge described in Patent Document 1, as shown in FIG. 6 of the same document, is provided with a base plate 10c, a scale display sheet 10a attached to the front surface of the base plate 10c, and a protective film 10b that covers the front surface of the scale display sheet 10a to protect the scale display sheet 10a. By providing this protective film 10b, the water gauge in the same document is said to be able to extend its service life. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3165949 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, in recent years, awareness of disaster prevention against tsunamis has been increasing. For this reason, the present inventors thought that there was an emerging need for measuring water levels in seawater and brackish water areas. However, conventional water gauges, including the water gauge described in Patent Document 1, were manufactured on the assumption that they would be installed in freshwater areas such as rivers and dams, and therefore were not considered suitable for installation in seawater and brackish water areas.

[0006] The present invention has been made to solve the above problems, and aims to provide a marine water marker suitable for installation in seawater or brackish water areas. It is also an object of the present invention to provide a method for manufacturing this marine water marker and a method for installing this marine water marker. [Means for solving the problem]

[0007] The above issues are: A marine water gauge for installation in seawater or brackish water, A substrate; A water level scale provided on the front side of the board; A protective layer covering the front side of the water level scale and Equipped with The portion disposed on the upper side in the vertical direction when installed is a fluorine region in which a fluorine-based resin layer is provided on the front side of the protective layer, The portion disposed vertically downward during installation was the silicone region on the front side of the protective layer, with a silicone resin layer provided on the outermost surface. sea ​​water mark This is solved by providing

[0008] This sea level gauge is A method for installing a marine water gauge in a seawater area or a brackish water area, comprising: A substrate; A water level scale provided on the front side of the board; A protective layer covering the front side of the water level scale and Equipped with The portion disposed on the upper side in the vertical direction when installed is a fluorine region in which a fluorine-based resin layer is provided on the front side of the protective layer, The portion disposed vertically downward during installation was the silicone region on the front side of the protective layer, with a silicone resin layer provided on the outermost surface. The sea level gauge, The fluorine area is installed so that it overlaps with the splash zone, and the silicone area overlaps with the tidal zone (or the upper part of the mid-sea area in waters where there is no tidal zone. The same applies below.) How to set up marine water gauges It can be installed by

[0009] In this specification, the terms "upper" and "lower" mean "vertically upper" and "vertically lower" unless otherwise specified. In the following, "seawater area or brackish water area" may be simply expressed as "seawater area, etc.", and "seawater or brackish water" may be simply expressed as "seawater, etc."

[0010] The marine water marker according to the present invention is suitable for use in seawater areas, etc. Specifically, it has both weather resistance against strong ultraviolet rays in seawater areas, etc., and antifouling properties against adhesion of marine organisms in seawater areas, etc., and can demonstrate high durability even when installed in seawater areas, etc. The reason for this will be explained below with reference to FIG. 1.

[0011] Structures installed in seawater areas are generally exposed to different environments depending on their vertical position. That is, as shown in Figure 1, the environment of a structure is divided into the atmospheric part, the splash zone, the tidal zone (in the case of water areas with tides), the submarine part, and the submarine soil part from the top. The atmospheric part is an area where splashes of seawater and the like hardly reach. A structure placed in the atmospheric part is exposed to the atmosphere almost all the time. The splash zone is the part from just below the atmospheric part to the high tide level (just above the submarine part in water areas with no tides). A structure placed in the splash zone is rarely immersed in seawater and the like, but is frequently splashed with seawater and the like. The tidal zone is the part between the high tide level and the low tide level. The water surface W of seawater and the like is usually located within this tidal zone. A structure placed in the tidal zone is repeatedly immersed in seawater and the like and exposed to the atmosphere due to the ebb and flow of the tides. The submarine part is the part from just below low tide (just below the splash zone in tidal areas) to the seabed. Structures placed in the submarine part are almost always immersed in seawater or the like. The submarine soil part is the part in the marine soil below the seabed. Structures placed in the submarine soil part are always immersed in seawater or the like.

[0012] Among these environmental zones, in the atmosphere and splash zone, structures are often exposed to strong ultraviolet rays for long periods of time. If the water level scale or protective layer of a water gauge is damaged by strong ultraviolet rays, the water level scale may deteriorate and become difficult to read accurately. On the other hand, in the tidal zone, structures are periodically immersed in seawater, etc., so damage from ultraviolet rays is limited, but marine organisms are more likely to attach to the structures. If marine organisms attach to the surface (front surface) of a water gauge on which the water level scale is provided, the water level scale will be hidden and difficult to read. In particular, many sessile marine organisms such as oysters and barnacles live in seawater, etc., and if these organisms attach to the water gauge, it is impossible to remove them without damaging the water gauge, so there is a risk that the water gauge will have to be replaced in a short period of time.

[0013] In this regard, in the marine water gauge according to the present invention, as described above, the portion disposed on the upper side when installed is a fluorine region having a fluorine-based resin layer. Since the fluorine-based resin layer has excellent weather resistance against ultraviolet rays, etc., by installing the marine water gauge with this fluorine region overlapping the splash zone, the splash zone and the atmospheric portion of the marine water gauge can be made less susceptible to damage by ultraviolet rays.

[0014] However, if the fluorine area overlaps with the tidal zone, for example by making the entire marine water marker a fluorine area, there is a risk that it will not be possible to sufficiently prevent marine organisms from attaching to the tidal zone. For this reason, in the marine water marker of the present invention, the part that is placed on the lower side when installed is a silicone area having a silicone resin layer. Since the silicone resin layer has excellent antifouling properties that prevent organisms from attaching, installing the marine water marker with the silicone area overlapping the tidal zone makes it difficult for marine organisms to attach to the front surface of the marine water marker.

[0015] By the way, if we only consider preventing biological adhesion, it seems that the entire marine water gauge may be made of silicone. However, since the silicone resin layer is less resistant to ultraviolet rays than the fluororesin layer, if the entire marine water gauge is made of silicone, the silicone resin layer, protective layer, and water level scale will be damaged by ultraviolet rays and deteriorated at the high position of the splash zone and the part overlapping with the atmospheric part of the marine water gauge, and it may be difficult to improve the durability of the marine water gauge.

[0016] For the above reasons, in the marine water marker of the present invention, a fluorine region is provided in the portion that will be the upper side when installed, and a silicone region is provided in the portion that will be the lower side when installed. This improves both the weather resistance and antifouling properties of the marine water marker when installed in seawater areas, etc., and as a result, improves the durability of the marine water marker.

[0017] The marine water gauge according to the present invention can also be formed as a single continuous structure. However, in this case, since the fluorine region and the silicon region coexist on one substrate, it is necessary to switch between the fluorine-based resin layer and the silicon-based resin layer on the substrate, which may make the manufacturing of the marine water gauge more time-consuming. In addition, the marine water gauge may be bulky during transportation and storage. For this reason, the marine water gauge according to the present invention is formed by arranging multiple scale plates each having a substrate, a water level scale, and a protective layer in the vertical direction, and it is preferable that the scale plate arranged on the upper side in the vertical direction when installed is a fluorine scale plate with a fluorine-based resin layer on the front side of the protective layer, and the scale plate arranged on the lower side in the vertical direction when installed is a silicon scale plate with a silicon-based resin layer on the front side of the protective layer and on the outermost layer. This makes it possible to provide the fluorine region and the silicon region on separate scale plates (so that the fluorine region and the silicon region do not coexist on one scale plate). Therefore, there is no need to switch between the fluororesin layer and the silicone resin layer on the substrate, which simplifies the manufacturing process for the marine water gauge.

[0018] However, if a marine water gauge is formed by arranging a plurality of scale plates in the vertical direction, the upper and lower ends of the scale plates will be located in the splash zone, tidal zone, or underwater area, and there is a risk that the larvae of sessile marine organisms, seawater, etc. may easily invade between the substrate and the protective layer at the ends. If the larvae of sessile marine organisms, seawater, etc. invade between the substrate and the protective layer, the protective layer may easily peel off, and it may be difficult to improve the durability of the marine water gauge. For this reason, in the marine water gauge according to the present invention, it is preferable to apply an end treatment tape to the end of the scale plate, which has an end surface covering portion that covers the end surfaces of the substrate and the protective layer, and a front side covering portion that is continuous with the end surface covering portion and covers the front side of the protective layer. This makes it difficult for the larvae of sessile marine organisms, seawater, etc. to invade between the substrate and the protective layer, and the durability of the marine water gauge can be further improved.

[0019] When the above-mentioned edge treatment tape is provided, in the case of a fluorine scale plate, it is preferable to arrange the front-side covering portion of the edge treatment tape on the front side of the fluorine-based resin layer. This makes it possible to more effectively prevent the intrusion of seawater, etc. On the other hand, in the case of a silicon scale plate, it is preferable to arrange the front-side covering portion of the edge treatment tape on the rear side of the silicon-based resin layer. This makes it possible to make the silicon-based resin layer the outermost layer over the entire area, including the edges of the silicon scale plate, making it possible to more effectively prevent the attachment of marine organisms. Effect of the Invention

[0020] As described above, the present invention makes it possible to provide a marine water marker suitable for installation in seawater or brackish water areas. It also makes it possible to provide a method for manufacturing the marine water marker and a method for installing the marine water marker. [Brief description of the drawings]

[0021] [Figure 1] This is a diagram showing the marine water gauge installed in a sea area. [Diagram 2] This is an enlarged view of the α portion of the sea level gauge in Figure 1. [Diagram 3] 2 is a cross-sectional view showing the α portion of the sea level gauge in FIG. 1 cut by a vertical plane passing through the center of the sea level gauge in the left-right direction. [Figure 4] FIG. 2 is a cross-sectional view of the sea level gauge of FIG. 1 cut by a horizontal plane. [Diagram 5] FIG. 4 is an enlarged view of the β portion in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] A preferred embodiment of the present invention will be described in more detail with reference to the drawings. In the following, an example will be described in which a marine quantity water marker is installed in a seawater area, but the installation location of the marine quantity water marker is not limited to seawater areas and may be brackish water areas. In Figures 1 to 5 shown below, x-axis, y-axis, and z-axis are shown, and these axes are consistent between different drawings. However, the orientation of the marine quantity water marker is not limited by these axes.

[0023] 1. Marine water gauges and their installation methods FIG. 1 is a diagram showing a state in which a marine quantity water mark 1 is installed in a sea area. FIG. 2 is an enlarged view of the α portion of the marine quantity water mark 1 in FIG. 1. FIG. 3 is a cross-sectional view of the α portion of the marine quantity water mark 1 in FIG. 1 cut along a vertical plane passing through the center of the marine quantity water mark 1 in the left-right direction. FIG. 4 is a cross-sectional view of the marine quantity water mark 1 in FIG. 1 cut along a horizontal plane. FIG. 5 is an enlarged view of the β portion in FIG. 3.

[0024] The marine water gauge 1 of this embodiment is attached to an installation surface 91 of an installation object 90 (e.g., a quay) in a seawater area or a brackish water area to measure the water level of the water area, as shown in Fig. 1. The water level is measured by observing where the water surface W overlaps with the marine water gauge 1 in the vertical direction by visual inspection or camera photography.

[0025] As shown in the enlarged portion of Figure 3, the marine water gauge 1 of this embodiment comprises a substrate 11, a water level scale 12 provided on the front side of the substrate 11, and a protective layer 13 covering the front side of the water level scale 12. The water level scale 12 is for displaying scales and numbers, as shown in Figure 2 and other figures. The protective layer 13 (Figure 3) is for covering and protecting the water level scale 12, and is made of a transparent material. In this specification, "transparent" means that the visible light transmittance is 75% or more.

[0026] This marine volume water mark 1 has two regions with different configurations. That is, the upper part of the marine volume water mark 1 is a fluorine region 1a provided with a fluorine-based resin layer 14a covering the front side of the protective layer 13, and the lower part of the marine volume water mark 1 is a silicon region 1b provided with a silicon-based resin layer 14b covering the front side of the protective layer 13. The fluorine-based resin layer 14a and the silicon-based resin layer 14b form the outermost layers of the fluorine region 1a and the silicon region 1b, respectively.

[0027] When this marine discharge water gauge 1 is installed in seawater areas, etc., it is installed so that the fluorine region 1a overlaps the splash zone in the installation area, and the silicon region 1b overlaps the tidal zone in the installation area (if the installation is in an area where there is no tidal zone and the area directly below the splash zone is mid-sea, the upper part of the mid-sea area; same below.) as shown in Figures 2 and 3. This makes it possible to achieve both weather resistance against strong ultraviolet rays in seawater areas and anti-fouling properties against the adhesion of marine organisms, thereby increasing the durability of the marine discharge water gauge 1, as already mentioned.

[0028] In this case, the fluorine region 1a does not need to overlap the entire splash zone, but only needs to overlap at least a portion of it. On the other hand, it is preferable that the silicon region 1b overlaps the entire tidal zone. This makes it possible to more effectively prevent adhesion of marine organisms. The marine water gauge 1 of this embodiment has two regions, the fluorine region 1a and the silicon region 1b, but the marine water gauge 1 may have three or more regions whose outermost layers have different compositions.

[0029] The fluorine region 1a and the silicon region 1b may be separated, but in the marine water gauge 1 of this embodiment, as shown in FIG. 3, the silicon region 1b is disposed directly below the fluorine region 1a. That is, the scale markings of the water level scale 12 are continuous between the fluorine region 1a and the silicon region 1b. It is preferable that the boundary 1c between the fluorine region 1a and the silicon region 1b is approximately aligned with the boundary between the splash zone and the tidal zone, or is disposed at a position higher than the boundary between the splash zone and the tidal zone. That is, the silicon region 1b may overlap the lower part of the splash zone, but it is preferable that the fluorine region 1a does not overlap the tidal zone. This is because the upper part of the tidal zone is a part where marine organisms are very likely to attach, and if the fluorine region 1a overlaps this part, there is a risk that marine organisms will attach violently to the fluorine region 1a, whereas the lower part of the splash zone is a part where a lot of seawater and other droplets are scattered, and therefore even if the silicon region 1b overlaps this part, the amount of ultraviolet rays that the silicon region 1b receives is considered to be limited.

[0030] However, if the silicon region 1b is made to overlap the high position of the splash zone, the amount of splash of seawater etc. hitting the upper part of the silicon region 1b will be too small, and the silicon-based resin layer 14b in that part may be easily deteriorated by exposure to strong ultraviolet rays. For this reason, the distance H between the boundary 1c between the fluorine region 1a and the silicon region 1b and the boundary between the splash zone and the tidal zone is 1 (FIG. 3) is preferably 100 cm or less, more preferably 80 cm or less, and even more preferably 50 cm or less. 1 The lower limit is not particularly limited, but is usually set to 0 cm or more.

[0031] The marine water gauge 1 can also be a single continuous structure. However, in that case, the fluorine region 1a and the silicon region 1b coexist on one substrate 11, and as already mentioned, the manufacturing of the marine water gauge 1 may be time-consuming. In addition, the marine water gauge 1 may be bulky. For this reason, in this embodiment, as shown in FIG. 3, the marine water gauge 1 is formed by vertically arranging a plurality of scale plates 10 each having a substrate 11, a water level scale 12, and a protective layer 13. Among the plurality of scale plates 10, the scale plate 10 arranged on the upper side during installation is a fluorine scale plate 10a having a fluorine-based resin layer 14a on the front side of the protective layer 13, and the scale plate 10 arranged on the lower side during installation is a silicon scale plate 10b having a silicon-based resin layer 14b on the front side of the protective layer 13. In the fluorine scale plate 10a of this embodiment, a fluorine-based resin layer 14a is provided over almost the entire area (the entire area is the fluorine region 1a). In addition, in the silicon scale plate 10b of this embodiment, a silicon resin layer 14b is provided over almost the entire area (the entire area is the silicon region 1b).

[0032] As a result, the fluorine region 1a and the silicon region 1b are provided independently on the fluorine scale plate 10a and the silicon scale plate 10b, respectively (the fluorine region 1a and the silicon region 1b do not coexist on one substrate 11), which reduces the labor required for manufacturing the marine water gauge 1. The marine water gauge 1 can also be made compact during transportation and storage. Furthermore, if some of the scale plates 10 on the marine water gauge 1 are damaged after installation, only those scale plates 10 need to be replaced, which reduces costs and conserves resources. The multiple scale plates 10 can be installed simply lined up vertically, or can be installed connected to each other using a connecting member (not shown).

[0033] However, if the marine water gauge 1 is formed of multiple scale plates 10, the upper and lower ends of the scale plates 10 will be located in the splash zone, tidal zone, or underwater area as shown in Fig. 3, and the ends will come into contact with splashes of seawater or the like or be immersed in seawater or the like. If the larvae of a sessile marine organism such as an oyster penetrates between the substrate 11 and the protective layer 13 at the ends and settles there and grows, there is a risk that the protective layer 13 will be peeled off largely from the substrate 11 as the organism grows. In addition, even if seawater or the like simply penetrates between the substrate 11 and the protective layer 13, the protective layer 13 will be easily peeled off from the substrate 11, and there is a risk that it will be difficult to improve the durability of the marine water gauge 1.

[0034] 5, an end treatment tape 15 is applied to the end of the scale plate 10 to prevent seawater, etc. from entering between the substrate 11 and the protective layer 13. The end treatment tape 15 has an end surface covering portion 15a that covers the end surfaces of the substrate 11 and the protective layer 13, a front surface covering portion 15b that is provided continuously with the front surface end of the end surface covering portion 15a and covers the front side of the protective layer 13, and a back surface covering portion 15c that is provided continuously with the back surface end of the end surface covering portion 15a and covers the back side of the protective layer 13. This makes it difficult for larvae of sessile marine organisms, seawater, etc. to enter between the substrate 11 and the protective layer 13.

[0035] In the fluorine scale plate 10a of this embodiment, as shown in FIG. 5, the front-side covering portion 15a of the end treatment tape 15 is disposed on the front side of the fluorine-based resin layer 14a. That is, at the end of the fluorine scale plate 10a, the front-side covering portion 15a forms the outermost layer. In contrast, in the silicon scale plate 10b, the front-side covering portion 15a of the end treatment tape 15 is disposed on the rear side of the silicon-based resin layer 14b. That is, in the silicon scale plate 10b, the silicon-based resin layer 14b forms the outermost layer over the entire area including the end. This is because the silicon scale plate 10b is disposed over the tidal zone where marine organisms are likely to attach, and if there is a part where the outermost layer of the silicon scale plate 10b is the end treatment tape 15, marine organisms will attach to that part, which may make it difficult to improve the durability of the marine water gauge 1. In addition, since the silicone-based resin layer 14b has extremely high anti-fouling properties, when attempting to attach the front-side covering part 15a to the front surface of the silicone-based resin layer 14b, the front-side covering part 15a may easily peel off, which may make it difficult to prevent the intrusion of water, etc.

[0036] The marine water gauge 1 and the scale plate 10 forming it may be formed in a substantially flat shape without any irregularities. However, in that case, it may be difficult to increase the strength of the marine water gauge 1 and the scale plate 10. For this reason, in this embodiment, as shown in FIG. 4, the marine water gauge 1 (and the scale plate 10) is fixed to the installation surface 91 (FIG. 1) at a pair of left and right side edge portions P 2 and a central portion P supported approximately parallel to the installation surface 91 at a position away from the installation surface 91 toward the front side. 1 and a pair of left and right side edges P 2 and central P 1 A pair of inclined walls P that connect the left and right 3 This increases the strength of the marine water gauge 1 and the scale plate 10. In addition, the water level scale 12 can be easily read from any direction on the front side of the marine water gauge 1, while the stepped portion (the inclined wall portion P 3 ) can also be used to prevent driftwood and other debris from getting caught.

[0037] As shown in Figs. 3 and 4, a buffer member 16 is attached to the rear side of the substrate 11 to improve adhesion of the marine water gauge 1 (scale plate 10) to the installation surface 91 (Fig. 1). The shape of the buffer member 16 is not particularly limited, but in this embodiment, it is a strip (rod) extending in the vertical direction. The buffer member 16 is usually made of an elastic material. As the elastic material, either a foamed or non-foamed material can be used. In this embodiment, the buffer member 16 is made of chloroprene rubber.

[0038] The location of the marine water gauge 1 is not particularly limited as long as it is a seawater area or a brackish water area. Examples of the location of the marine water gauge 1 include coasts (including tidal flats, etc.), river mouths, brackish lakes, brackish dams, etc. Furthermore, the type of the installation object 90 is not limited as long as it is a fixed structure. Examples of the installation object 90 include water gates, culverts, wharves, embankments, revetments, breakwaters, breakwaters, offshore breakwaters, jetties, piers, and other fixed structures that do not follow the water level fluctuations of seawater, etc. in seawater areas, etc. The installation surface 91 of the installation object 90 may be not only a substantially vertical surface, but also a surface that is inclined with respect to the vertical direction.

[0039] 2. Manufacturing method of marine water gauge The marine water gauge 1 (FIG. 3) of this embodiment can be manufactured by manufacturing the required number of fluorine scale plates 10a and silicon scale plates 10b and combining them.

[0040] 2.1 Manufacturing method of fluorine scale plate The fluorine scale plate 10a can be manufactured through a scale forming step, a protective layer forming step, a fluorine-based resin layer forming step, and an end tape processing step.

[0041] 2.1.1 Scale formation process The scale formation step is a step of forming the water level scale 12 on the front side of the substrate 11 (FIG. 3). The water level scale 12 can be formed, for example, by directly painting or printing on the substrate 11. However, in this case, there is a risk that the painting will be time-consuming and a special printing machine will be required. For this reason, in this embodiment, the water level scale 12 is formed by a water level scale sheet on the front side of which inkjet printing has been performed. That is, first, inkjet printing is performed on the front side of the water level scale sheet 12 in a blank state. A scale adhesive layer (not shown) is provided on the back side of the water level scale sheet 12, and this scale adhesive layer is covered with a release sheet (not shown) during printing. The release sheet is peeled off from the water level scale sheet 12 after printing, and the exposed scale adhesive layer is attached to the front side of the substrate 11. As a result, the water level scale 12 is laminated on the substrate 11, completing the scale forming process.

[0042] The substrate 11 is a plate-like member (more specifically, a plate-like member having a hat-shaped cross section as shown in FIG. 4) and is usually made of metal or resin. Examples of metals that can be used include stainless steel, aluminum, titanium, copper alloys, nickel alloys, etc. Examples of resins that can be used include ABS resin and hard polyvinyl chloride resin. In this embodiment, the substrate 11 is made of SUS316, which is one of the stainless steels that has excellent corrosion resistance. The substrate 11 of the fluorine scale plate 10a and the substrate 11 of the silicon scale plate 10b may have different configurations, but are usually made to be the same.

[0043] The water level scale sheet 12 is not limited to any material as long as it is flexible and inkjet printable, but is preferably made of vinyl chloride resin from the viewpoint of salt resistance. In this embodiment, a vinyl chloride sheet having retroreflective properties is used as the water level scale sheet 12. This makes it possible to make the scale easily visible over a wide angle range. The thickness of the water level scale sheet 12 is not limited to any thickness, but is preferably about 0.1 mm to 0.5 mm including the scale adhesive layer (not shown) on the back side, and more preferably about 0.15 mm to 0.25 mm.

[0044] 2.1.2 Protective layer formation process The protective layer forming process is a process of forming the protective layer 13 on the front side of the water level scale 12. The protective layer 13 can also be formed by coating or the like. In this case, however, it may be difficult to form the protective layer with a uniform thickness. For this reason, in this embodiment, the protective layer 13 is laminated on the water level scale 12 by attaching a protective sheet (not shown) formed in advance into a sheet shape to the front side of the water level scale 12 with a protective layer adhesive layer (not shown) provided on the back surface of the protective sheet.

[0045] The protective layer 13 (protective sheet) is usually made of a transparent resin. In this embodiment, the protective layer 13 is made of a transparent vinyl chloride resin. The adhesive constituting the protective layer adhesive layer (not shown) is not limited as long as it is transparent, but it is preferable to adopt an acrylic adhesive. The thickness of the protective layer 13 is also not limited, but is preferably about 0.01 mm to 0.1 mm including the protective layer adhesive layer (not shown), and more preferably about 0.03 mm to 0.08 mm.

[0046] 2.1.3 Fluorine-based resin layer formation process The fluororesin layer forming step is a step of forming a fluororesin layer 14a on the front side of the protective layer 13. The fluororesin layer 14a may be formed separately from the protective layer 13, but in that case, it may be troublesome. In addition, it may be difficult to form the fluororesin layer 14a uniformly. For this reason, in the manufacturing method of the fluororesin scale plate 10a in this embodiment, a fluororesin laminate film (not shown) on which the fluororesin layer 14a is pre-laminated on the front side of the protective layer 13 is used as the protective sheet (not shown) used in the protective layer forming step. This allows the protective layer 13 and the fluororesin layer 14a to be formed simultaneously (the protective layer forming step and the fluororesin layer forming step can be performed simultaneously) simply by attaching the fluororesin laminate film, thereby saving time and effort.

[0047] The fluororesin forming the fluororesin layer 14a is not limited to a specific type as long as it is transparent. The fluororesin layer 14a is preferably fixed to the front surface of the protective layer 13 by crosslinking, sputtering, coating, or the like. This makes it difficult for the fluororesin layer 14a to peel off from the protective layer 13, and makes it easier to improve the weather resistance and durability of the marine water gauge 1.

[0048] 2.1.4 Edge tape processing process The edge tape processing step is a step of attaching an edge treatment tape 15 to the edge of the fluorine scale plate 10a (FIG. 5) after the fluorine resin layer forming step is completed. A tape adhesive layer (not shown) is provided on the attachment surface of the edge treatment tape 15. This tape adhesive layer is used to attach the widthwise middle portion (edge ​​surface covering portion 15a) of the edge treatment tape 15 to the edge surfaces of the substrate 11, the water level scale sheet 12, the protective layer 13, and the fluorine resin layer 14a, the widthwise front side (front side covering portion 15b) to the front surface of the fluorine resin layer 14a, and the widthwise rear side (rear side covering portion 15c) to the rear surface of the substrate 11. This makes it possible to prevent the intrusion of larvae of sessile marine organisms, seawater, etc., between the substrate 11 and the water level scale sheet 12, or between the water level scale sheet 12 and the protective layer 13, etc.

[0049] In this embodiment, the edge treatment tape 15 is applied only to the upper and lower ends of the scale plate 10. On the other hand, the left and right ends of the scale plate 10 are edge-treated by wrapping the protective layer 13 around the back side of the substrate 11. That is, the left and right width of the protective sheet (not shown) forming the protective layer 13 is made larger than the left and right width of the scale plate 10, and the excess left and right portions of the protective sheet (not shown) are folded back to the back side of the substrate 11. However, in another embodiment, the edge treatment tape 15 can also be used to treat the left and right ends of the scale plate 10. It is preferable that the edge treatment tape 15 is applied to the ends that overlap the splash zone and the ends that overlap the tidal zone among the upper and lower ends of the multiple scale plates 10. In this embodiment, the edge treatment tape 15 is applied to all of the upper and lower ends of the multiple scale plates 10.

[0050] Width H of the front-side covering portion 15b of the end treatment tape 15 2 (FIG. 5) is not particularly limited. However, the width H 2 If the width H of the front covering portion 15b is too small, the front covering portion 15b may peel off easily. 2 is preferably 5 mm or more, more preferably 8 mm or more, and even more preferably 10 mm or more. 2 The upper limit is not particularly limited, but is usually set to 20 mm or less.

[0051] Width H of the rear covering portion 15c of the end treatment tape 15 3 (FIG. 5) is also not particularly limited. 3 The width H of the front covering portion 15b is 2 A configuration similar to that described above can be employed.

[0052] The end treatment tape 15 is usually a transparent resin tape. The material of the end treatment tape 15 is not particularly limited as long as it is impermeable to water. However, as shown in FIG. 4, the scale plate 10 in this embodiment is formed in a hat-shaped cross section (not flat but uneven), and the upper and lower edges are also hat-shaped with steps. If the end treatment tape 15 is made of a hard (hard to stretch) material, the end treatment tape 15 cannot fit the steps of the upper and lower edges, and there is a risk of a gap being formed between the scale plate 10 and the end treatment tape 15 at the step. For this reason, it is preferable to use a transparent resin material having flexibility (stretchability) as the material of the end treatment tape 15. Examples of such materials include soft polyvinyl chloride resin and soft polyolefin resin. In this embodiment, the end treatment tape 15 made of soft polyvinyl chloride resin is used from the viewpoint of salt damage resistance.

[0053] The thickness of the end treatment tape 15 is not particularly limited, but if the end treatment tape 15 is too thick, the front side covering portion 15b and the back side covering portion 15c may peel off easily, or the end treatment tape 15 may not be able to follow the steps at the upper and lower edges of the scale plate 10, and if the end treatment tape 15 is too thin, the end treatment tape 15 may be easily damaged. For this reason, the thickness of the end treatment tape 15, including the tape adhesive layer (not shown), is preferably about 0.02 mm to 0.15 mm, and more preferably about 0.05 mm to 0.1 mm. Completion of the end tape processing step completes the manufacture of the fluorine scale plate 10a.

[0054] 2.2 Manufacturing method of silicon scale plate The silicon scale plate 10b (Fig. 3) can be manufactured through a scale forming process, a protective layer forming process, an edge tape processing process, and a silicon-based resin layer forming process. Among these, the scale forming process and the protective layer forming process can be performed in the same procedures as "2.1.1 Scale forming process" and "2.1.2 Protective layer forming process" in "2.1 Manufacturing method of fluorine scale plate", respectively, and therefore the explanation will be omitted.

[0055] The water level scale 12 on the fluorine scale plate 10a and the water level scale 12 on the silicon scale plate 10b may have different configurations, but are usually the same. The protective layer 13 on the fluorine scale plate 10a and the protective layer 13 on the silicon scale plate 10b may have the same configuration or different configurations. However, in "2.1.2 Protective layer forming step" in "2.1 Manufacturing method for fluorine scale plate", a fluorine-based laminate film (not shown) with a fluorine-based resin layer 14a laminated in advance on the front side of the protective layer 13 is used as the protective sheet (not shown), whereas in "2.2 Manufacturing method for silicon scale plate", a protective sheet with nothing laminated on the front side of the protective layer 13 is used as the protective sheet. The reason is that the silicone-based resin layer 14b in this embodiment is formed by coating, as described below, and if a fluorine-based laminate film is used as the protective sheet, the silicone paint that forms the silicone-based resin layer 14b will be repelled by the fluorine-based resin layer 14a, making it difficult to form the fluorine-based resin layer 14a successfully.

[0056] 2.2.1 Edge tape processing process In the manufacturing method of the silicon scale plate 10b, the edge tape processing step is performed prior to the silicon-based resin layer forming step (at the stage where the protective layer forming step is completed). That is, as shown in FIG. 5, the widthwise middle part (edge ​​surface covering part 15a) of the edge processing tape 15 is attached to the edge surfaces of the substrate 11, the water level scale sheet 12 and the protective layer 13, the widthwise front side (front side covering part 15b) is attached to the front surface of the protective layer 13, and the widthwise rear side (rear side covering part 15c) is attached to the rear surface of the substrate 11. As for the other configurations, the same configuration as described in "2.1.4 Edge Tape Processing Step" in "2.1 Manufacturing Method of Fluorine Scale Plate" can be adopted. The edge processing tape 15 in the fluorine scale plate 10a and the edge processing tape 15 in the silicon scale plate 10b may be different types of tape, but are usually the same type of tape.

[0057] 2.2.2 Silicone resin layer formation process The silicone resin layer forming step is a step of forming a silicone resin layer 14b on the front side of the protective layer 13. In the manufacturing method of the silicone scale plate 10b, the silicone resin layer forming step is performed after the end tape processing step. As a result, as shown in Fig. 5, the front side covering portion 15b of the end processing tape 15 is covered with the silicone resin layer 14b, so that the front side covering portion 15b does not protrude from the outermost surface layer on the front side of the silicone scale plate 10b.

[0058] The silicone resin layer 14b can be formed, for example, in a sheet shape and laminated on the front side of the protective layer 13 and the front covering portion 15b of the end treatment tape 15 via an adhesive layer or the like, but in this embodiment, it is formed by applying a silicone paint. More specifically, a primer is first applied to the front side of the protective layer 13 and the front covering portion 15b (FIG. 5) to form the primer layer 14b. 1 Then, a primer layer 14b is formed. 1 The silicone resin layer 14b is formed by applying a silicone paint to the front side of the primer layer 14b. 1 The silicone-based resin layer 14b is laminated on the protective layer 13 and the front side of the front covering portion 15b with the silicone-based resin layer 14b interposed therebetween. This makes it possible to make the silicone-based resin layer 14b less likely to peel off from the protective layer 13.

[0059] Primer layer 14b 1 The primer used for forming the primer layer 14b is at least transparent after drying. 1 The type of primer is not particularly limited as long as it can be used as a primer for silicone paint. For example, a wash primer (etching primer for short exposure) can be used as the primer.

[0060] The silicone paint used to form the silicone resin layer 14b is transparent at least after drying (i.e., the silicone resin layer 14b after formation is transparent). The specific type of silicone paint is not particularly limited as long as it can be cured to form a coating film. Although a two-component type silicone paint can also be used, in this embodiment, a wet-curing one-component silicone paint is used. When the formation of the silicone resin layer 14b is completed, the manufacture of the silicone scale plate 10b is completed. [Explanation of symbols]

[0061] 1 Sea water mark 1a Fluorine region 1b Silicon Region 10 Scale plate 10a Fluorine scale plate 10b Silicon scale plate 11 Substrate 12 Water level scale (water level scale sheet) 13 Protective layer 14a Fluorine-based resin layer 14b Silicone resin layer 14b 1 Primer layer 15 End treatment tape 15a End covering part 15b Front side coating 15c Back side coating 16. Cushioning materials 90 Installation Objects 91 Installation surface P 1 central part P 2 side edge P 3 Slanted wall W water surface

Claims

1. A marine water gauge for installation in seawater or brackish water, A substrate; A water level scale provided on the front side of the board; A protective layer covering the front side of the water level scale and Equipped with The portion disposed on the upper side in the vertical direction when installed is a fluorine region in which a fluorine-based resin layer is provided on the front side of the protective layer, The portion disposed vertically downward during installation was the silicone region on the front side of the protective layer, with a silicone resin layer provided on the outermost surface. Sea water mark.

2. The scale plate is formed by arranging a plurality of scale plates each having a substrate, a water level scale, and a protective layer in the vertical direction, The scale plate disposed vertically above the sensor when installed is a fluorine scale plate having a fluorine-based resin layer on the front side of the protective layer; The scale plate arranged vertically below during installation is a silicon scale plate having a silicon resin layer on the top surface of the protective layer. A marine water gauge according to claim 1.

3. At the end of the scale plate, an end surface covering portion for covering end surfaces of the substrate and the protective layer; a front-side covering portion that is provided continuously with the end-face covering portion and covers the front side of the protective layer; An end treatment tape having the following structure is applied: A marine water gauge according to claim 2.

4. In the case of a fluorine scale plate, the front-side coating of the end treatment tape is disposed on the front side of the fluorine-based resin layer, whereas, In the case of the silicon scale plate, the front side covering portion of the end treatment tape is disposed on the rear side of the silicon-based resin layer. A marine water gauge according to claim 3.

5. A method for manufacturing a marine water gauge according to any one of claims 1 to 4.

6. A method for installing a marine water gauge in a seawater area or a brackish water area, comprising: A substrate; A water level scale provided on the front side of the board; A protective layer covering the front side of the water level scale and Equipped with The portion disposed on the upper side in the vertical direction when installed is a fluorine region in which a fluorine-based resin layer is provided on the front side of the protective layer, The portion disposed vertically downward during installation was the silicone region on the front side of the protective layer, with a silicone resin layer provided on the outermost surface. The sea level gauge, The fluorine area is installed so that it overlaps with the splash zone, and the silicone area is installed so that it overlaps with the tidal zone. How to install marine water gauges.

Images