JP2023160128A - Resin-coated member - Google Patents

Abstract

To provide a resin-coated member with enhanced balance between the peelability and adhesiveness of a resin layer.SOLUTION: A resin-coated member 10 includes: a member 12 having a body 12a; and a resin layer 16 that covers the surface of the body 12a and is composed of a transparent polyurea resin. A low adhesive layer 14, composed of a low adhesive, is interposed between the body 12a and the resin layer 16 over the whole area.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a resin-coated member.

Conventionally, the surfaces of steel members and other members used in structures such as plants, bridges, and water gates have been coated with resin sheets to improve the corrosion resistance and waterproof properties of the members (patented). (See Reference 1).

Patent No. 5059222

By the way, when a resin layer such as a resin sheet coated on a member such as a steel member deteriorates over time, the deteriorated resin layer is peeled off from the member and then a new resin layer is coated again. ing. Further, in the case where the member is painted, when the paint film deteriorates over time, the resin layer is peeled off, and then the member is repainted and covered with a new resin layer.

When peeling the resin layer from the member, if the resin layer and the member are tightly adhered to each other, it may take a long time to peel the resin layer as described above. On the other hand, if the adhesion between the resin layer and the member is low, the resin layer will easily peel off from the member, and corrosive media such as water will easily enter through the gap between the resin layer and the member. For this reason, corrosion resistance, waterproof properties, etc. may be reduced.

Therefore, an object of the present disclosure is to provide a resin-coated member that can improve the releasability and adhesion of a resin layer in a well-balanced manner.

A resin-coated member according to the present disclosure includes a member having a member main body, and a resin layer coated on the surface of the member main body and formed of a transparent polyurea resin, the resin-coated member having a member main body and a resin layer formed of a transparent polyurea resin. A low adhesive layer is provided on the entire surface and is made of a low adhesive agent.

A resin-coated member according to the present disclosure includes a member having a member main body, and a resin layer coated on the surface of the member main body and formed of a transparent polyurea resin, and between the member main body and the resin layer. a peeling area formed of a low adhesive layer formed of a low adhesive agent, and a non-peeling area provided between the member main body and the resin layer and not including the low adhesive layer, The non-peeling regions are provided in a grid pattern, and the peeling region is surrounded by the non-peeling region.

In the resin-coated member according to the present disclosure, the member has an extension part extending around the member main body, the extension part is covered with the resin layer, and the extension part is covered with the resin layer, and the extension part is covered with the resin layer. The low adhesive layer may not be included between the part and the resin layer.

The resin-coated member according to the present disclosure may include an adhesive layer provided between the extension portion and the resin layer and formed of an adhesive or an adhesive tape.

In the resin-coated member according to the present disclosure, the member may have an uneven portion on the surface of the member main body.

In the resin-coated member according to the present disclosure, the low adhesive layer may be provided between the uneven portion and the resin layer.

In the resin-coated member according to the present disclosure, the member main body of the member may include a plurality of member plates and a fastening portion that fastens the adjacent member plates.

In the resin-coated member according to the present disclosure, the low adhesive layer may be provided between the fastening portion and the resin layer.

In the resin-coated member according to the present disclosure, the adhesion between the resin layer and the low-adhesive layer may be greater than the adhesion between the member body and the low-adhesive layer.

In the resin-coated member according to the present disclosure, the low adhesive agent may be a glue, a fluororesin agent, or a silicone resin agent.

In the resin-coated member according to the present disclosure, the glue may be a polyvinyl alcohol resin, a vinyl acetate resin, a polyvinylpyrrolidone resin, or a starch.

In the resin-coated member according to the present disclosure, the peeling load of the resin layer may be 2 KN or more and 85 KN or less in an adhesive force measurement method based on JIS Z0237.

In the resin-coated member according to the present disclosure, the peeling load of the resin layer may be 2 KN or more and 10 KN or less in an adhesive force measuring method based on JIS Z0237.

In the resin-coated member according to the present disclosure, a coating film may be provided on the surface of the member.

According to the resin-coated member having the above configuration, the releasability and adhesion of the resin layer can be improved in a well-balanced manner.

FIG. 2 is a schematic plan view showing the configuration of a resin-coated member in the first embodiment of the present disclosure. FIG. 2 is a schematic cross-sectional view taken along the AA direction in FIG. 1 in the first embodiment of the present disclosure. It is a flowchart which shows the manufacturing method of a resin coated member in 1st embodiment of this indication. FIG. 3 is a schematic cross-sectional view showing the configuration of a resin-coated member in a second embodiment of the present disclosure. FIG. 7 is a schematic plan view showing the configuration of a resin-coated member in a third embodiment of the present disclosure. 6 is a schematic cross-sectional view taken along the line AA in FIG. 5 in a third embodiment of the present disclosure. FIG. FIG. 7 is a schematic cross-sectional view showing the configuration of a resin-coated member in a fourth embodiment of the present disclosure. FIG. 7 is a schematic cross-sectional view showing the configuration of a resin-coated member in a fifth embodiment of the present disclosure. FIG. 7 is a schematic cross-sectional view showing the configuration of a resin-coated member in a sixth embodiment of the present disclosure. FIG. 7 is a schematic cross-sectional view showing the configuration of a resin-coated member in a seventh embodiment of the present disclosure. 3 is a graph showing the results of an adhesion evaluation test in an example of the present disclosure.

[First embodiment]
A first embodiment of the present disclosure will be described in detail below using the drawings. FIG. 1 is a schematic plan view showing the configuration of the resin coated member 10. As shown in FIG. FIG. 2 is a schematic cross-sectional view taken along the line AA in FIG. The resin coated member 10 includes a member 12, a low adhesive layer 14, and a resin layer 16.

The member 12 has a member main body 12a. The member 12 is made of a metal member made of a metal material such as steel, a concrete member made of a concrete material, or the like. The member 12 is, for example, a structural member used in structures such as plants, bridges, and water gates. The member 12 is composed of, for example, a flat plate member. The member 12 may be coated to improve corrosion resistance, waterproofness, etc., and a coating may be provided on the surface of the member 12.

The resin layer 16 covers the surface of the member body 12a and is made of resin. The resin layer 16 preferably covers the entire surface of the member main body 12a. By covering the surface of the member body 12a with the resin layer 16, the surface of the member body 12a can be protected. For example, by covering the surface of the member main body 12a with the resin layer 16, the corrosion resistance, waterproofness, etc. of the member 12 can be improved. Further, by covering the surface of the member main body 12a with the resin layer 16, damage such as scratches on the surface of the member 12 can be suppressed. The thickness of the resin layer 16 can be, for example, 100 μm to 3 mm. The resin layer 16 can be formed of thermoplastic resin, thermosetting resin, or the like. As the resin for the resin layer 16, for example, polyurea resin, urethane resin, vinyl chloride resin, etc. can be used.

The resin layer 16 is preferably made of a highly elastic resin. When the resin layer 16 is made of a highly elastic resin, the resin layer 16 has a high elastic force. As a result, even if microcracks or the like occur in the resin layer 16, they are followed, so that breakage of the resin layer 16 can be suppressed. For example, polyurea resin may be used as such a highly elastic resin. The resin layer 16 is preferably made of transparent resin. Since the resin layer 16 is transparent, the surface condition of the member 12 can be inspected and observed from the outside. For example, transparent polyurea resin may be used as such a transparent resin.

The low adhesive layer 14 is provided on the entire surface between the member main body 12a and the resin layer 16, and is made of a low adhesive agent. The low adhesive layer 14 covers the entire surface of the member main body 12a. Thereby, the releasability and adhesion of the resin layer 16 can be improved in a well-balanced manner. By providing the low adhesive layer 14 on the entire surface between the member body 12a and the resin layer 16, the peeling load of the resin layer 16 can be set to 2 KN or more and 85 KN or less in the adhesive force measurement method based on JIS Z0237. It may be set to 2KN or more and 10KN or less.

The low adhesive agent preferably has lower adhesive strength than the resin forming the resin layer 16. The low adhesive agent can be, for example, a glue, a fluororesin, a silicone resin, or the like. The sizing agent can be, for example, a polyvinyl alcohol resin, a vinyl acetate resin, a polyvinylpyrrolidone resin, a starch, or the like. These low adhesive agents can reduce the adhesion between the member main body 12a and the resin layer 16. More specifically, the adhesion force between the member main body 12a and the low adhesive layer 14 and the adhesion force between the resin layer 16 and the low adhesive layer 14 are smaller than the adhesion force between the member main body 12a and the resin layer 16. Become.

The low adhesive solvent can be water, an organic solvent, or the like. When the low adhesive agent is a sizing agent such as a polyvinyl alcohol resin agent or a vinyl acetate resin agent, water is preferably used as the solvent. When the low adhesive agent is a fluororesin or silicone resin, an organic solvent is preferably used as the solvent. Further, when the resin layer 16 is formed of an organic solvent-based resin, it is preferable to use a low adhesive agent that uses water as a solvent. This is because it is possible to suppress elution of the low adhesive layer 14 when forming the resin layer 16.

As a low-tack adhesive, it is recommended to use a sizing agent. A glue such as a polyvinyl alcohol resin or a vinyl acetate resin can reduce the adhesion between the member main body 12a and the resin layer 16 more than a fluororesin or silicone resin. Thereby, the releasability and adhesion of the resin layer 16 can be improved in a well-balanced manner. Furthermore, since water can be used as the solvent for the adhesive, elution of the low adhesive layer 14 can be suppressed during formation of the resin layer 16 even when the resin layer 16 is formed of an organic solvent-based resin. .

The adhesion force between the resin layer 16 and the low adhesive layer 14 is preferably greater than the adhesion force between the member main body 12a and the low adhesive layer 14. Since the low adhesive layer 14 adheres to the resin layer 16 when the resin layer 16 is peeled off from the resin coated member 10, the resin layer 16 and the low adhesive layer 14 can be peeled off almost simultaneously. This prevents the low adhesive layer 14 from remaining on the surface of the member main body 12a, so that the resin layer 16 can be removed efficiently. For example, if the member 12 is made of stainless steel, the resin layer 16 is made of polyurea resin, and the low adhesive layer 14 is made of polyvinyl alcohol resin, when the resin layer 16 is peeled off, the resin layer 16 Since the low-adhesive layer 14 and the low-adhesive layer 14 can be peeled off almost simultaneously, it is possible to suppress the low-adhesive layer 14 from remaining on the surface of the member main body 12a.

Next, a method for manufacturing the resin-coated member 10 will be explained. FIG. 3 is a flowchart showing a method for manufacturing the resin-coated member 10. The method for manufacturing the resin coated member 10 includes a low adhesive layer forming step (S10) and a resin layer forming step (S12).

The low-adhesive layer forming step (S10) is a step of forming the low-adhesive layer 14 using a low-adhesive agent on the surface of the member main body 12a. In the low-adhesive layer forming step (S10), the low-adhesive layer 14 is formed using a low-adhesive agent over the entire surface of the member main body 12a. First, before forming the low adhesive layer 14 on the surface of the member body 12a, the surface of the member body 12a may be pretreated. When the member 12 is a metal member, it can be pretreated by pickling, mechanical polishing, degreasing, cleaning, etc. For these pretreatments, general pretreatment methods for metal materials can be applied.

Next, a method for forming the low adhesive layer 14 will be explained. The low-adhesive layer 14 can be formed by spraying, brushing, or the like with a low-adhesive agent. As the low adhesive agent, the above-mentioned glue, fluororesin, silicone resin, etc. can be used. As the low adhesive agent, commonly available commercially available agents can be used. After applying a low adhesive agent to the surface of the member main body 12a, it is preferable to dry it at room temperature or the like to remove the solvent.

The resin layer forming step (S12) is a step of coating the surface of the low adhesive layer 14 with a resin to form the resin layer 16. In the resin layer forming step (S12), it is preferable to form the resin layer 16 by coating the entire surface of the low adhesive layer 14 with a resin. The resin layer 16 can be formed by spraying or coating an uncured resin onto the surface of the member main body 12a provided with the low adhesive layer 14, and then curing the resin by heating or the like. As the resin, the above-mentioned polyurea resin or the like can be used. As the resin, commonly commercially available resins can be used. In this way, the resin-coated member 10 can be manufactured.

As described above, the resin-coated member having the above structure includes a member having a main body, a resin layer coated on the surface of the member main body and formed of resin, and covering the entire surface between the member main body and the resin layer. Since the resin layer is provided with a low-adhesive layer formed of a low-adhesive agent, the releasability and adhesion of the resin layer can be improved in a well-balanced manner.

[Second embodiment]
Next, a second embodiment of the present disclosure will be described in detail using the drawings. FIG. 4 is a schematic cross-sectional view showing the configuration of the resin-covered member 20. As shown in FIG. The second embodiment differs from the first embodiment in that an extension portion 22 is provided around the member main body 12a, and the other configurations are the same. Note that the same components as in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The member 21 has an extending portion 22 extending around the member main body 12a. The extending portion 22 is provided so as to surround the entire circumference of the member main body 12a. The extension portion 22 is covered with a resin layer 16. The low adhesive layer 14 is not included between the extended portion 22 and the resin layer 16. At the outer peripheral portion between the member 21 and the resin layer 16, the adhesion between the member 21 and the resin layer 16 is increased, so that it is possible to suppress the invasion of corrosive media such as water from the outside of the resin-coated member 20.

The resin coating member 20 may be provided with an adhesive layer (not shown) between the extension portion 22 and the resin layer 16. This further improves the adhesion between the extending portion 22 and the resin layer 16, so that the invasion of corrosive media such as water from the outside of the resin coating member 20 can be further suppressed. Furthermore, since the extending portion 22 is formed flat, the resin layer 16 can be easily peeled off using a tool (such as a skin plow or a grinder). The adhesive layer can be formed using adhesive, adhesive tape, or the like. As for adhesives, adhesive tapes, etc., commercially available products such as general resin adhesives can be used.

Although the adhesive layer may be provided only in a portion between the extending portion 22 and the resin layer 16, it is preferably provided over the entire circumference of the extending portion 22 and the resin layer 16. The adhesive force between the resin layer 16 and the adhesive layer is preferably greater than the adhesive force between the extension portion 22 and the adhesive layer. Since the adhesive layer adheres to the resin layer 16 when the resin layer 16 is peeled off, the resin layer 16 and the adhesive layer can be peeled off almost simultaneously. Thereby, it is possible to suppress the adhesive layer from remaining on the member 21, so that the work of peeling off the resin layer 16 can be easily performed. The adhesive force between the resin layer 16 and the adhesive layer is preferably smaller than the mechanical strength of the resin layer 16. By making the adhesive force between the resin layer 16 and the adhesive layer smaller than the mechanical strength of the resin layer 16, when the resin layer 16 is peeled off, the resin layer 16 can be peeled off while suppressing breakage of the resin layer 16. I can do it. This makes it possible to improve the peeling workability of the resin layer 16.

As described above, according to the resin-coated member having the above configuration, the member has an extension portion extending around the member main body, the extension portion is covered with a resin layer, and the extension portion and the extension portion are covered with a resin layer. Since there is no low adhesive layer between the resin layer and the resin layer, it is possible to improve the releasability and adhesion of the resin layer in a well-balanced manner, and to suppress the intrusion of corrosive media such as water from the outside of the resin-coated member. can.

[Third embodiment]
Next, a third embodiment of the present disclosure will be described in detail using the drawings. FIG. 5 is a schematic plan view showing the configuration of the resin coated member 30. As shown in FIG. FIG. 6 is a schematic cross-sectional view taken along the line AA in FIG. Note that the same components as in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The resin-coated member 30 includes a member 12 having a member body 12a, and a resin layer 16 coated on the surface of the member body 12a and made of resin. The resin coating member 30 has a peeling area 32 provided between the member body 12a and the resin layer 16 and a non-peeling area 34.

The peeling region 32 is provided between the member main body 12a and the resin layer 16, and is composed of a low-adhesive layer 14 made of a low-adhesive agent. The non-peelable region 34 is provided between the member main body 12a and the resin layer 16, and is configured not to include the low adhesive layer 14. The non-peeling areas 34 are provided in a grid pattern. The peeled area 32 is surrounded by a non-peeled area 34 . By providing the peeling region 32 and the non-peeling region 34 between the member main body 12a and the resin layer 16, the peelability and adhesion of the resin layer 16 can be improved in a well-balanced manner. Next, the peeled area 32 and the non-peeled area 34 will be explained in detail.

The non-peelable region 34 is provided between the member main body 12a and the resin layer 16, and is configured not to include the low adhesive layer 14. The non-peeling region 34 is formed in a grid pattern on the surface of the member main body 12a. Further, the outer peripheral portion of the member main body 12a is formed with a non-peelable region 34. Since the non-peelable region 34 does not include the low adhesive layer 14, the resin layer 16 and the member main body 12a are in direct contact with each other. This increases the adhesion between the member main body 12a and the resin layer 16 in the non-peelable region 34. In this manner, the adhesion between the member main body 12a and the resin layer 16 is enhanced in the non-separation region 34, so that corrosive media such as water can be prevented from entering between the member main body 12a and the resin layer 16.

The peeling region 32 is provided between the member main body 12a and the resin layer 16, and is composed of a low-adhesive layer 14 made of a low-adhesive agent. By providing the low-adhesive layer 14, at least one of the adhesion between the resin layer 16 and the low-adhesive layer 14 and the adhesion between the member main body 12a and the low-adhesive layer 14 can be reduced between the member main body 12a and the resin layer 16. can be made smaller than the adhesion force of By interposing the low adhesive layer 14 in the peeling region 32, the adhesion between the member main body 12a and the resin layer 16 is reduced, so that the resin layer 16 can be easily peeled off. The low adhesive agent for the low adhesive layer 14 can be the same as the low adhesive agent for the low adhesive layer 14 of the first embodiment.

The peeling area 32 is surrounded by a non-peeling area 34, and is formed in a rectangular shape. More specifically, the entire periphery of the peeled region 32 is surrounded by the non-peeled region 34. Even if peeling occurs in the peeled areas 32 during use of the resin-coated member 30, the peeled areas 32 are discontinuous and do not contact each other, so that a chain of peeling is suppressed. As a result, even if a corrosive medium such as water enters the gap between the member main body 12a and the resin layer 16 from the peeled part of the peeled area 32, the corrosive medium is surrounded by the non-peeled area 34. Further diffusion of the corrosive medium can be suppressed.

Next, a method for manufacturing the resin coated member 30 will be explained. The method for manufacturing the resin coated member 30 includes a low adhesive layer forming step and a resin layer forming step.

The low-adhesive layer forming step is a step of forming the low-adhesive layer 14 using a low-adhesive agent on the surface of the member main body 12a. After the member main body 12a is pretreated, the non-peeling region 34 of the member main body 12a is masked in a grid pattern with a masking material. A general masking tape or the like can be used as the masking material. A low-adhesive layer 14 is formed on the masking surface of the member body 12a by spraying a low-adhesive agent or the like. After forming the low-adhesive layer 14, the masking material is removed from the member main body 12a, and a peeling region 32 made of the low-adhesive layer 14 is formed. The method for forming the low-adhesive layer 14 is the same as the low-adhesive layer forming step (S10) of the first embodiment, so detailed explanation will be omitted.

The resin layer forming step is a step in which the surface of the member body 12a provided with the low adhesive layer 14 is coated with resin to form the resin layer 16. The resin layer forming step is the same as the resin layer forming step (S12) of the first embodiment, so detailed explanation will be omitted. In this way, the resin-coated member 30 can be manufactured.

Note that the resin-coated member 30 may also have an extension portion extending around the member main body, similarly to the resin-coated member 20 of the second embodiment. At the outer peripheral portion between the member and the resin layer, the adhesion between the member and the resin layer is further increased, so that it is possible to suppress the entry of corrosive media such as water from the outside of the resin-coated member 30.

According to the resin-coated member having the above structure, the resin-coated member includes a member having a main body, and a resin layer formed of resin and coated on the surface of the member main body, and is provided between the member main body and the resin layer, and has a low The non-peelable area includes a peelable area made of a low-adhesive layer formed of an adhesive, and a non-peelable area that is provided between the member body and the resin layer and does not include the low-adhesive layer. Since the peeling area is surrounded by the non-peeling area, the peelability and adhesion of the resin layer can be improved in a well-balanced manner.

[Fourth embodiment]
Next, a fourth embodiment of the present disclosure will be described in detail using the drawings. FIG. 7 is a schematic cross-sectional view showing the configuration of the resin-coated member 50. As shown in FIG. Note that the same components as in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The fourth embodiment differs from the first embodiment mainly in the configuration of the member 52.

The member 52 of the resin-coated member 50 has an uneven portion 54 on the surface of the member main body 12a. The uneven portion 54 is not particularly limited, but may be formed of, for example, a protrusion, a web, a flange, or the like. The member 52 can include an uneven portion 54 and a flat portion 56 on the surface of the member main body 12a. Although the arrangement of the uneven portions 54 and the flat portions 56 is not particularly limited, for example, the flat portions 56 may be arranged in a grid pattern so that the uneven portions 54 are surrounded by the flat portions 56.

The surface of the member main body 12a is coated with a low adhesive layer 14. The low adhesive layer 14 covers the entire surface of the member main body 12a. More specifically, the low adhesive layer 14 covers the entire surface of the uneven portion 54 and flat portion 56 of the member main body 12a. When the resin layer 16 is directly coated on the uneven portion 54, the adhesion of the resin layer 16 becomes stronger due to the anchor effect of the uneven portion 54. Therefore, when the resin layer 16 is peeled off, the resin layer 16 may be broken, and the workability of peeling the resin layer 16 is reduced. On the other hand, by providing the low adhesive layer 14 on the uneven portion 54, the adhesion between the uneven portion 54 and the resin layer 16 is reduced, so that when the resin layer 16 is peeled off, the resin layer 16 is easily peeled off from the member main body 12a. can do.

The low adhesive layer 14 of the uneven portion 54 may use the same low adhesive agent as the low adhesive layer 14 of the flat portion 56, or may use a different low adhesive agent. By forming the low adhesive layer 14 of the uneven portion 54 and the low adhesive layer 14 of the flat portion 56 with the same low adhesive agent, the productivity of the resin coated member 50 can be improved. For example, it is possible to form the low adhesive layer 14 covering the uneven portions 54 and the flat portions 56 using the same adhesive.

Furthermore, when the low adhesive layer 14 of the uneven portion 54 and the low adhesive layer 14 of the flat portion 56 are formed with different low adhesive agents, the low adhesive layer 14 of the uneven portion 54 is formed of the flat portion 56. It is preferable to use a low-adhesive agent whose adhesive force is lower than that of the low-adhesive layer 14. This is because, as described above, the uneven portion 54 has a stronger adhesion to the resin layer 16 due to the anchor effect. For example, the low adhesive layer 14 of the uneven portion 54 may be formed of a glue, and the low adhesive layer 14 of the flat portion 56 may be formed of a fluororesin or a silicone resin.

The method for manufacturing the resin coated member 50 is the same as the low adhesive layer forming step (S10) and the resin layer forming step (S12) of the first embodiment, so a detailed explanation will be omitted. In addition, when applying different low adhesive agents to the low adhesive layer 14 of the uneven part 54 and the low adhesive layer 14 of the flat part 56, the low adhesive layer 14 may be formed by masking or the like.

According to the resin-coated member having the above configuration, it is possible to achieve the effects of the first embodiment and to improve the releasability and adhesion of the resin layer in a well-balanced manner even when the surface of the member has uneven portions.

[Fifth embodiment]
Next, a fifth embodiment of the present disclosure will be described in detail using the drawings. FIG. 8 is a schematic cross-sectional view showing the configuration of the resin coated member 60. Note that the same components as in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The fifth embodiment differs from the third embodiment mainly in the configuration of the member 52.

The member 52 of the resin-coated member 60 has an uneven portion 54 on the surface of the member main body 12a. The member 52 has the same configuration as the member 52 of the resin-coated member 50 of the fourth embodiment, so a detailed explanation will be omitted.

The resin coating member 60 has a peeled area 32 and a non-peeled area 34. The peeling region 32 is provided between the member main body 12a and the resin layer 16, and is formed of the low adhesive layer 14. The non-peelable region 34 is provided between the member main body 12a and the resin layer 16, and is configured not to include the low adhesive layer 14. The non-peeling regions 34 are provided in a grid pattern, and the peeling region 32 is surrounded by the non-peeling regions 34 . The entire periphery of the peeled area 32 is surrounded by a non-peeled area 34 .

It is preferable that the uneven portion 54 is provided with a peeling region 32 . The peeling region 32 is composed of a low adhesive layer 14 that coats the uneven portion 54. The peeling region 32 may be provided on the entire surface of the uneven portion 54 or may be provided only on a part of the uneven portion 54, but is preferably provided on the entire surface of the uneven portion 54. As described above, the adhesion of the uneven portion 54 becomes stronger due to the anchor effect, so by providing the peeling region 32 on the uneven portion 54, the adhesion can be reduced. Further, it is preferable that the flat portion 56 is provided with a non-peeling region 34 . This is because almost no anchoring effect occurs in the flat portion 56, so the adhesion can be suppressed without providing the low adhesive layer 14. For example, if the flat portions 56 are arranged in a lattice pattern and the uneven portions 54 are surrounded by the flat portions 56, the peeling region 32 is made to correspond to the uneven portions 54, and the flat portions 56 are not covered. It is possible to configure the peeling area 34 in a corresponding manner.

The method for manufacturing the resin coated member 60 is similar to the low adhesive layer forming step and the resin layer forming step in the method for manufacturing the resin coated member 30 of the third embodiment, so a detailed explanation will be omitted.

According to the resin-coated member having the above configuration, it is possible to achieve the effects of the third embodiment and to improve the releasability and adhesion of the resin layer in a well-balanced manner even when the surface of the member has uneven portions.

[Sixth embodiment]
Next, a sixth embodiment of the present disclosure will be described in detail using the drawings. FIG. 9 is a schematic cross-sectional view showing the configuration of the resin coating member 70. Note that the same components as in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The sixth embodiment differs from the first embodiment mainly in the configuration of the member 72.

The member 72 of the resin-coated member 70 is composed of a joint member. The member body 72a of the member 72 includes a plurality of member plates 74 and a fastening portion 76 that fastens adjacent member plates 74. The fastening method of the fastening portion 76 is not particularly limited, but may be configured using a bolt joint or the like, for example. In the resin-covered member 70 shown in FIG. 9, the fastening portion 76 is configured with a bolt joint.

The fastening portion 76 is formed by drilling into the overlapping portion of each member plate 74 and each splice plate 78 with the splice plates 78 stacked on the upper and lower sides of the abutting ends of adjacent member plates 74. A bolt 80 is inserted into the provided bolt hole. A washer (not shown) is fitted into the tip of the bolt 80 that protrudes above the attachment plate 78, and a nut 82 is screwed onto it. Thereby, the fastening portion 76 connects the abutting ends of adjacent member plates 74 via the joining plate 78. The arrangement of the flat portions of the member plate 74 and the fastening portions 76 is not particularly limited, but for example, the flat portions of the member plate 74 may be arranged in a grid pattern and the fastening portions 76 may be surrounded by the flat portions of the member plate 74. You may also do so.

The surface of the member main body 72a is coated with a low adhesive layer 14. The low adhesive layer 14 covers the entire surface of the member main body 72a. More specifically, the low adhesive layer 14 covers the flat portion of the member plate 74 and the entire surface of the fastening portion 76 . When the resin layer 16 is directly coated on the fastening portion 76, the adhesion of the resin layer 16 becomes stronger due to the anchor effect of the fastening portion 76. Therefore, when the resin layer 16 is peeled off, the resin layer 16 may be broken, and the workability of peeling the resin layer 16 is reduced. On the other hand, by providing the low adhesive layer 14 on the fastening portion 76, the adhesion between the fastening portion 76 and the resin layer 16 is reduced, so that the resin layer 16 is easily peeled off from the member 72 when the resin layer 16 is peeled off. be able to.

The low-adhesive layer 14 of the fastening portion 76 may be made of the same low-adhesive agent as the low-adhesive layer 14 of the flat portion of the member plate 74, or may be made of a different low-adhesive agent. By forming the low-adhesive layer 14 of the fastening portion 76 and the low-adhesive layer 14 of the flat portion of the member plate 74 with the same low-adhesive agent, the productivity of the resin-coated member 70 can be improved. For example, it is possible to form the low adhesive layer 14 covering the flat portion of the member plate 74 and the fastening portion 76 using a glue.

Furthermore, when the low-adhesive layer 14 of the fastening portion 76 and the low-adhesive layer 14 of the flat portion of the member plate 74 are formed with different low-adhesive agents, the low-adhesive layer 14 of the fastening portion 76 is It is preferable to use a low-adhesive agent that has lower adhesive force than the low-adhesive layer 14 on the flat portion of the plate 74. This is because, as described above, the fastening portion 76 has a stronger adhesion with the resin layer 16 due to the anchor effect. For example, the low-adhesive layer 14 on the flat portion of the member plate 74 may be formed of a fluororesin or silicone resin, and the low-adhesive layer 14 of the fastening portion 76 may be formed of a glue.

The method for manufacturing the resin coated member 70 is the same as the low adhesive layer forming step (S10) and the resin layer forming step (S12) of the first embodiment, so a detailed explanation will be omitted. Note that when applying different low-adhesive agents to the low-adhesive layer 14 of the fastening portion 76 and the low-adhesive layer 14 of the flat portion of the member plate 74, the low-adhesive layer 14 may be formed by masking, etc. Bye.

According to the resin-coated member having the above configuration, it is possible to achieve the effects of the first embodiment and to improve the releasability and adhesion of the resin layer in a well-balanced manner even when the member has a fastening portion.

[Seventh embodiment]
Next, a seventh embodiment of the present disclosure will be described in detail using the drawings. FIG. 10 is a schematic cross-sectional view showing the configuration of the resin coated member 80. Note that the same components as in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The seventh embodiment differs from the third embodiment mainly in the configuration of the member 72.

In the member 72 of the resin-coated member 80, a member main body 72a includes a plurality of member plates 74 and a fastening portion 76 for fastening adjacent member plates 74. The member 72 has the same configuration as the member 72 of the resin-coated member 70 of the sixth embodiment, so a detailed explanation will be omitted.

The resin coating member 80 has a peeled area 32 and a non-peeled area 34. The peeling region 32 is provided between the member main body 72a and the resin layer 16, and is formed of the low adhesive layer 14. The non-peelable region 34 is provided between the member main body 72a and the resin layer 16, and is configured not to include the low adhesive layer 14. The non-peeling regions 34 are provided in a grid pattern, and the peeling region 32 is surrounded by the non-peeling regions 34 .

It is preferable that the fastening portion 76 is provided with a peeling region 32 . The peeling region 32 is made up of the low adhesive layer 14 provided on the fastening portion 76 . The peeling region 32 may be provided on the entire surface of the fastening section 76 or only on a part of the fastening section 76, but is preferably provided on the entire surface of the fastening section 76. As described above, the adhesion force of the fastening part 76 becomes stronger due to the anchor effect, so by providing the peeling region 32 in the fastening part 76, the adhesion force can be reduced. Further, it is preferable that a non-peelable region 34 be provided in the flat portion of the member plate 74. This is because almost no anchoring effect occurs in the flat portion of the member plate 74, so it is possible to suppress the adhesion force even without providing the low adhesive layer 14. For example, if the flat portions of the member plate 74 are arranged in a grid pattern and the fastening portion 76 is surrounded by the flat portions of the member plate 74, the peeling region 32 is made to correspond to the fastening portion 76 and , it is possible to configure the non-peeling region 34 to correspond to the flat portion 56 of the member plate 74.

The method for manufacturing the resin coated member 80 is the same as the low adhesive layer forming step and the resin layer forming step in the method for manufacturing the resin coated member 30 of the third embodiment, so a detailed explanation will be omitted.

According to the resin-coated member having the above configuration, it is possible to achieve the effects of the third embodiment and to improve the releasability and adhesion of the resin layer in a well-balanced manner even when the member has a fastening portion.

Adhesion evaluation tests were conducted on low adhesive agents. First, the test pieces of Examples 1 to 4 will be explained. The adhesion evaluation test was conducted in accordance with the adhesive force measurement method of JIS Z0237 (2009). Each test piece was prepared by applying a low adhesive layer to the surface of a metal base material, and then coating the surface of the low adhesive layer with a resin layer. The metal base material and resin layer of each test piece were the same. Steel material was used as the metal base material. The resin layer was formed of transparent polyurea resin.

Next, the low adhesive layer of each test piece will be explained. In the test piece of Example 1, a low adhesive layer was formed with a silicone resin agent. In the test piece of Example 2, a low adhesive layer was formed with a fluororesin agent. In the test piece of Example 3, a low adhesive layer was formed with a glue made of polyvinyl alcohol resin. In the test piece of Example 4, a low adhesive layer was formed with a glue made of vinyl acetate resin. Regarding the solvent for low adhesiveness, an organic solvent was used in the test pieces of Examples 1 and 2, and water was used in the test pieces of Examples 3 and 4.

Next, the test piece of Comparative Example 1 will be explained. The test piece of Comparative Example 1 was different from the test pieces of Examples 1 to 4 in that it did not have a low adhesive layer, and the other configurations were the same. More specifically, the surface of the metal base material was coated with a transparent polyurea resin to form a resin layer.

The shape of each test piece was a rectangle with a width of about 24 mm and a length of about 300 mm. The peeling load when peeling off the resin layer from each test piece was measured. FIG. 11 is a graph showing the results of the adhesion evaluation test. In the graph of FIG. 11, each test piece is plotted on the horizontal axis, and the peel load is plotted on the vertical axis, and the peel load of each test piece is shown in a bar graph.

The peel load of the test piece of Example 1 was 80.00 KN. The peel load of the test piece of Example 2 was 70.60 KN. The peel load of the test piece of Example 3 was 3.14 KN. The peel load of the test piece of Example 4 was 3.14 KN. On the other hand, the peeling load of the test piece of Comparative Example 1 was 97.30 KN. The test results revealed that the test pieces of Examples 1 to 4 had smaller peeling loads than the test piece of Comparative Example 1. It was found that the test pieces of Examples 3 and 4 had even smaller peel loads than the test pieces of Examples 1 and 2. Further, it was found that the test pieces of Examples 1 to 4 had appropriate peeling loads with respect to the adhesion of the resin layer, and that appropriate adhesion was obtained.

From the above, when a low adhesive layer is formed with a glue made of polyvinyl alcohol resin, vinyl acetate resin, silicone resin, or fluororesin, resin It has become clear that the adhesion of the layers can be reduced. When a low-adhesive layer is formed with a glue made of polyvinyl alcohol resin or vinyl acetate resin, the adhesion of the resin layer is improved more than when a low-adhesive layer is formed with a silicone resin or fluorine resin. It has become clear that it is possible to reduce In addition, it was found that even when a low-adhesive layer was formed with a glue made of polyvinyl alcohol resin, vinyl acetate resin, silicone resin, or fluororesin, appropriate adhesion to the resin layer could be obtained. .

From this result, it is possible to improve the releasability and adhesion of the resin layer in a well-balanced manner by forming a low-adhesive layer with a glue made of polyvinyl alcohol resin, vinyl acetate resin, silicone resin, or fluororesin. It became clear that it is possible.

10, 20, 30, 50, 60, 70, 80 Resin coated member 12, 21, 52, 72 Member 14 Low adhesive layer 16 Resin layer 32 Peeling area 34 Non-peeling area 54 Uneven part 74 Member plate 76 Fastening part 78 Appendices Contact plate 80 Bolt 82 Nut

Claims (14)

A resin-coated member,
a member having a member body;
a resin layer coated on the surface of the member body and formed of a transparent polyurea resin;
Equipped with
A resin-coated member, comprising a low-adhesive layer formed of a low-adhesive agent and provided on the entire surface between the member main body and the resin layer. A resin-coated member,
a member having a member body;
a resin layer coated on the surface of the member body and formed of a transparent polyurea resin;
Equipped with
a peeling region formed between the member main body and the resin layer and made of a low adhesive layer;
a non-peelable region provided between the member main body and the resin layer and not including the low adhesive layer;
including;
The non-peeling area is provided in a grid pattern,
The peeling area is a resin-coated member in which the peeling area is surrounded by the non-peeling area. The resin-coated member according to claim 1 or 2,
The member has an extending portion extending around the member main body,
The extension portion is covered with the resin layer,
The resin coated member does not include the low adhesive layer between the extending portion and the resin layer. The resin-coated member according to claim 3,
A resin-coated member, the resin-covered member having an adhesive layer provided between the extension portion and the resin layer and formed of an adhesive or an adhesive tape. The resin-coated member according to any one of claims 1 to 4,
The member is a resin-coated member having an uneven portion on the surface of the member main body. The resin-coated member according to claim 5,
The low adhesive layer is a resin-coated member provided between the uneven portion and the resin layer. The resin-coated member according to any one of claims 1 to 4,
The member is a resin-coated member, wherein the member main body includes a plurality of member plates and a fastening portion that fastens the adjacent member plates. The resin-coated member according to claim 7,
The low adhesive layer is a resin-coated member provided between the fastening portion and the resin layer. The resin-coated member according to any one of claims 1 to 8,
A resin-coated member, wherein the adhesion between the resin layer and the low-adhesive layer is greater than the adhesion between the member body and the low-adhesive layer. The resin-coated member according to any one of claims 1 to 9,
In the resin-coated member, the low adhesive agent is a glue, a fluororesin agent, or a silicone resin agent. The resin-coated member according to claim 10,
In the resin-coated member, the glue is a polyvinyl alcohol resin, a vinyl acetate resin, a polyvinylpyrrolidone resin, or a starch. The resin-coated member according to any one of claims 1 to 11,
The resin coated member has a peeling load of the resin layer of 2 KN or more and 85 KN or less in an adhesive force measurement method based on JIS Z0237. The resin-coated member according to any one of claims 1 to 12,
The resin coated member has a peeling load of the resin layer of 2 KN or more and 10 KN or less in an adhesive force measurement method based on JIS Z0237. The resin-coated member according to any one of claims 1 to 13,
The member is a resin-coated member in which a coating film is provided on the surface of the member.

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