Scaffolding

Abstract

To provide a scaffold material that when an IC tag is attached to a material surface, protects an RFIC from an impact during construction and dismantling of a temporary scaffolding and manages individual information more reliably.SOLUTION: In a scaffold material for a temporary scaffolding in which an IC tag is fixed to a material surface, the IC tag includes a sheet-shaped RFIC recording identification information of the scaffold material, and a protective layer that is made of resin and covers at least one sheet surface on the material surface side of the RFIC. The protective layer has impact resistance for construction and dismantling of the temporary scaffolding. Also, the protective layer preferably has heat shielding properties against sunlight. Furthermore, in the IC tag, the entire RFIC is covered with the protective layer, and the RFID is positioned to rise above the material surface. Note that the resin forming the protective layer is polyurea.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to temporary scaffolding for construction, and to scaffolding materials that are easy to manage. [Background technology]

[0002] Temporary scaffolding is necessary for constructing the framework of a building, and in recent years, due in part to stricter safety standards, the construction of temporary scaffolding materials has become more complex every year. In addition, the types of scaffolding materials are becoming more diverse.

[0003] Scaffolding materials are generally intended for repeated use and are reused multiple times. For management purposes, each scaffolding material is given an identification mark, such as a model number, manufacturing date, and manufacturing factory. Conventionally, metal stickers have often been used as identification marks, with various pieces of information displayed on the surface of the sticker. However, with this configuration, the information must be visually confirmed, which takes time and can lead to erroneous judgments, making accurate material management difficult.

[0004] One possible solution would be to use IC tags as identification tags, write various information to the IC, and then instantly read it using an IC reader. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-162119 Summary of the Invention [Problem to be solved by the invention]

[0006] However, when using IC tags, care must be taken to protect the RFIC from shocks and heat, as IC tags are made by immersing a sheet-shaped RFIC in a thin resin, as disclosed in Patent Document 1. Therefore, the RFIC can easily be destroyed by shocks when erecting or dismantling temporary scaffolding. Furthermore, even if there is an abnormality in the RFIC, this cannot be detected visually from the outside, which can lead to the problem of malfunction.

[0007] The present invention has been made to solve the above-mentioned problems, and its purpose is to provide scaffolding material that, when attaching an IC tag to the material surface, protects the RFIC from impacts during the construction and dismantling of temporary scaffolding, and allows for more reliable management of individual information. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the present invention provides a scaffolding material for temporary scaffolding having an IC tag fixed to its surface, the IC tag comprising a sheet-like RFIC recording identification information of the scaffolding material, and a protective layer covering at least one surface of the sheet facing the surface of the RFIC, the protective layer being formed of a resin of a material and thickness that is impact resistant when the temporary scaffolding is constructed and dismantled. Note that RFIC is an abbreviation for Radio Frequency Integrated Circuit, and means a high-frequency integrated circuit or radio-frequency integrated circuit.

[0009] The present invention allows for digital management of the model number, manufacturing date, manufacturing factory, etc. of scaffolding material by reading the identification information stored in the IC tag fixed to the surface of the material. In this invention, the IC tag is covered with a resin protective layer, which not only provides abrasion resistance but also impact resistance, protecting the RFIC from impacts during the construction and dismantling of the temporary scaffolding, making it possible to read the identification information for a long period of time commensurate with the number of times the scaffolding material is reused. It goes without saying that the protective layer does not impede reading (contactless communication) by a reader.

[0010] Preferably, the entire RFIC of an IC tag is covered with a protective layer. This is to protect the RFIC not only from external forces and heat from the front surface, but also from external forces and heat from the back surface (material surface). Furthermore, by positioning the RFIC at a distance from the material surface, the RFIC can be protected from such external forces and heat from the back surface. In this case, a spacer such as a slightly thick double-sided tape is used as the spacing means. The spacer may be a single piece, but if it is divided into multiple pieces, it is preferable to form a protective layer between the spacers.

[0011] Furthermore, it is preferable that the protective layer also has heat-shielding properties to protect the RFIC from heat such as sunlight. This is because the constructed temporary scaffolding is exposed to sunlight, and the surface of the material becomes very hot in the summer, and the protective layer can protect the RFIC from this high heat. In particular, the heat-shielding effect on the RFIC can be further enhanced when the entire RFIC is covered with the protective layer.

[0012] In this invention, polyurea is used as a specific material for the protective layer that has such impact resistance and heat insulation properties. Polyurea is a resin in which the main component, isocyanate, is bonded to the curing agent, polyamine, via urea bonding. Its excellent strength and flexibility enable it to highly protect RFICs from impacts, and it also has waterproof, chemical, abrasion, heat, and corrosion resistance. Furthermore, polyurea dries quickly, shortening the time required to form the protective layer, facilitating the manufacture of IC tags.

[0013] The protective layer is typically formed by applying (brushing) or spraying the resin before solidification onto the RFIC, but any other method can be used as long as it can form a protective layer of the desired thickness. Regarding the order of application of the IC tag to the material surface, the protective layer can be formed on the RFIC first, and then fixed to the material surface with adhesive, double-sided tape, etc., or the RFIC alone can be fixed to the material surface first, and then the protective layer can be formed by applying or spraying as described above. [Effects of the Invention]

[0014] According to the present invention, an IC tag is applied to the surface of scaffolding materials as a means of managing them, making management extremely easy, as identification information can be obtained instantly.In addition, the RFIC in the IC tag is protected by a resin such as polyurea, which has impact resistance and heat resistance, so deterioration of the RFIC can be prevented for a long period of time, even in the harsh environment of a construction site. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a cross-sectional view of a main part of a scaffolding material according to a first embodiment of the present invention; [Figure 2] Process diagram showing the manufacturing method of the scaffolding material [Figure 3] Process diagram showing another manufacturing method of the scaffolding material [Figure 4] 10 is a cross-sectional view of a main part of a scaffolding material according to a second embodiment of the present invention; [Figure 5] Process diagram showing the manufacturing method of the scaffolding material [Figure 6] FIG. 1 is an explanatory diagram showing an example of an IC tag applied to the scaffolding material of the present invention. [Figure 7] Process diagram showing the manufacturing process of the IC tag [Figure 8] A process diagram showing another method for manufacturing an IC tag that can be applied to the scaffolding material of the present invention. [Figure 9] An explanatory diagram showing how to use the same IC tag [Figure 10] 10 is a perspective view of a main part of a scaffolding material according to a third embodiment of the present invention; [Figure 11] 10 is a perspective view of a main part of a scaffolding material according to a fourth embodiment of the present invention; [Figure 12] An explanatory diagram showing the manufacturing method of the IC tag applied to the scaffolding material [Figure 13] Process diagram showing another manufacturing method for IC tags applied to the same scaffolding material DETAILED DESCRIPTION OF THE INVENTION

[0016] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a main portion of a scaffolding material according to a first embodiment of the present invention, having an IC tag 2 fixed to a material surface 1. The scaffolding material is a component used to construct temporary scaffolding, and includes left and right framework pipes connected vertically, scaffolding boards hung horizontally across the framework pipes, handrails, braces, and the like. An IC tag 2 recording information about each component is fixed to the surface of each component. The IC tag 2 is formed by covering a sheet-like RFIC 3 with a resin protective layer 4. While double-sided tape 5 is an easy method for fixing the IC tag 2, adhesive bonding is also acceptable. The position at which the IC tag is fixed to the scaffolding material must be one that can be read by an IC reader.

[0017] Fig. 2 shows a manufacturing method of the scaffolding material of Fig. 1, in which the release paper 5a is peeled off from one side of the double-sided tape 5 and attached to the sheet-like RFIC 3 (Fig. 2(a)), then the release paper 5b is peeled off from the other side of the double-sided tape 5 to expose the adhesive surface and attach it to the surface 1 of the scaffolding material (Fig. 2(b)), and finally a resin is sprayed (Fig. 2(c)) or painted (brushed) to cover the RFIC 3 (Fig. 2(d)). Then, when the resin hardens, the RFIC 3 is covered with a resin protective layer 4, and the scaffolding material of the present invention is completed.

[0018] The protective layer 4 on the IC tag 2 may be formed before the IC tag 2 is fixed to the surface of the scaffolding material. That is, in Fig. 3, one side of double-sided tape 5 is attached to a sheet-like RFIC 3 (Fig. 3(a)), and resin is sprayed onto it (Fig. 3(b)) or applied (Fig. 3(c)). After the resin has hardened, the release paper 5b is peeled off from the other side of the double-sided tape and it is attached to the material surface 1 (Fig. 3(d)).

[0019] By fixing the IC tag 2 to the surface 1 of the scaffolding material in this way, information about the scaffolding material can be read without contact using an IC reader, making it easy to manage each piece of material. Also, the RFIC 3 of the IC tag 2 is covered with a resin protective layer 4, which protects the RFIC 3 from friction and impact. Furthermore, if the resin is resistant to direct sunlight (heat-shielding), the RFIC 3 will not break down even at high temperatures such as in the summer.

[0020] However, in the IC tag 2 of Figure 1, only double-sided tape 5 is interposed between the material surface 1 and the RFIC 3, and if the thickness of the double-sided tape 5 is thin, the heat from the material surface 1 is easily transferred to the RFIC 3, so it is expected that the RFIC 3 will malfunction due to such heat from the material surface 1.

[0021] Therefore, in the second embodiment shown in FIG. 4, a spacer 6 is interposed between the material surface 1 and the RFIC 3. This positions the RFIC 3 at a distance (floating) from the material surface 1 by the thickness of the spacer 6. Therefore, heat from the material surface 1 is less likely to be transferred to the RFIC 3. In this embodiment, a thick double-sided tape is used as the spacer 6, which is further divided into multiple pieces. These spacers 6 are arranged at intervals, and a resin protective layer 4 is also formed in these intervals. Therefore, the back side (material surface 1) of the RFIC 3 is also protected by the protective layer 4. The thickness of the spacer 6 is, of course, set to a level that prevents direct heat transfer from the material surface 1 to the RFIC 3, and is not limited to a specific value.

[0022] Figure 5 shows a manufacturing method for a scaffolding material that employs the spacers 6. First, multiple spacers 6 are fixed to the surface 1 of the material (Figure 5(a)), and then sheet-like RFICs 3 are fixed onto these spacers 6 (Figure 5(b)). Then, as in the above embodiment, resin is sprayed (Figure 5(c)) or applied (Figure 5(d)). This forms a resin protective layer 4 on the back side as well as the front side of the RFICs 3. Therefore, even if the surface 1 of the material becomes hot, the protective layer 4 on the back side provides heat insulation, ensuring that the RFICs 3 are protected from heat.

[0023] It is preferable to use polyurea as a resin that simultaneously exhibits impact resistance and heat insulation properties. Polyurea has excellent quick-drying properties, so the protective layer 4 can be formed in a short time.

[0024] Figure 6 shows an IC tag 2 in which a sheet-shaped RFIC 3 is embedded exactly in the middle of a protective layer 4. The entire sheet-shaped RFIC 3 is covered with a resin protective layer 4, so that the RFIC 3 can be protected from impacts and heat from all directions.

[0025] As shown in Fig. 7, this IC tag 2 is manufactured by immersing an RFIC 3 in a mold 7. That is, in the method shown in Fig. 7, the RFIC 3 is hung down by adhering it to a support wire 9 such as a copper wire that is hung down from a lid 8 of the rectangular mold 7 (Fig. 7(a)), and then this is inserted into the mold 7, the lid is closed, and resin is injected (Fig. 7(b)). Then, after the resin has descended, the mold is released, completing the IC tag 2 shown in Fig. 6. At this time, the excess support wire 9 is cut off and left in the protective layer 4.

[0026] As described above, the method of Fig. 7 can only produce one IC tag 2 at a time, but the method of Fig. 8 can produce multiple IC tags 2 at once. That is, in the method of Fig. 8, multiple sheet-like RFICs 3 are fixed to a single base sheet 10, and resin is sprayed from both sides of the base sheet, thereby producing a product in which both sides of all RFICs 3 are covered with a resin protective layer 4. Then, as shown in Fig. 9, a fixing means such as double-sided tape 5 is provided on one side of the product thus produced, and the product is then cut into individual RFICs 3 units using scissors 11, etc., to obtain the required number of IC tags 2.

[0027] As mentioned above, polyurea is preferable as the resin for forming the protective layer 4 because it is chemically stable, but an additional advantage of polyurea is its flexibility. That is, polyurea has excellent strength but is also flexible, so that an IC tag 2 having a protective layer 4 formed therefrom can be easily fixed to the surface of a pipe-shaped scaffolding material P, as shown in Fig. 10.

[0028] Furthermore, as shown in FIG. 11, if the IC tag 2 is formed into a cylindrical shape and is press-fitted into a pipe-shaped scaffolding material P, the IC tag 2 can be easily fixed to the scaffolding material without using adhesives or the like.

[0029] To manufacture such a cylindrical IC tag 2, similar to the manufacturing method using the mold in Figure 7, a sheet-like RFIC 3 rolled into a cylindrical shape is inserted into a circular mold 12 as shown in Figure 12, and then immersed in resin.

[0030] Furthermore, as shown in Figure 13, by using a clamp-type split mold 13, the sheet-shaped RFIC 3 can be easily held in a circular shape (Figure 13 (a)), and by closing the split mold 13 and then spraying resin, etc., a protective layer 4 can be formed on the inner surface of the RFIC 3.Then, by opening the split mold 13, the RFIC 3 can be easily demolded, and by further spraying resin on the surface, a cylindrical IC tag 2 can be manufactured that has protective layers 4 on both the inner and outer surfaces.

[0031] In all of the above-mentioned embodiments, at least the surface of the sheet-shaped RFIC 3 is covered with a protective layer 4 made of a resin such as polyurethane, so that even if an impact occurs when constructing the temporary scaffolding or if the temporary scaffolding becomes very hot after being exposed to sunlight after construction, the internal RFIC 3 will not break down, and the information in the IC tag 2 can be used for a long period of time corresponding to the number of times the scaffolding material is reused. [Explanation of symbols]

[0032] 1 Material surface 2. IC tags 3 RFIC (sheet type) 4 protective layer 5 double-sided tape 5a·5b Release paper 6 spacers 7 Formwork (rectangular) 8 Lid 9 support line 10 base sheet 11 Scissors 12 Formwork (circular) 13 Split mold

Claims

1. A scaffolding material for temporary scaffolding having an IC tag fixed to its surface, wherein the IC tag comprises a sheet-shaped RFIC that records identification information for the scaffolding material, and a resin protective layer that covers at least one side of the sheet opposite the RFIC surface, the side facing the material, and the protective layer is impact resistant when the temporary scaffolding is constructed or dismantled.

2. The scaffolding material according to claim 1 , wherein the protective layer further has a heat-shielding property.

3. 3. The scaffolding material according to claim 1, wherein the IC tag is an RFIC tag whose entirety is covered with a protective layer.

4. 4. The scaffolding material according to claim 1, wherein the RFIC of the IC tag is positioned away from the surface of the material.

5. The scaffolding material according to claim 4, wherein the RFIC is spaced from the surface of the material via a spacer.

6. The scaffold according to claim 1 , wherein the resin forming the protective layer is polyurea.

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