Building board bale and method of manufacturing a building board bale
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NICHIHA CORP
- Filing Date
- 2021-08-31
- Publication Date
- 2026-06-02
Smart Images
Figure CN116137855B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a bundle for building panels and a method for manufacturing the same. Background Technology
[0002] Building panels used to form the exterior and interior walls of buildings include, for example, inorganic panels such as ceramic exterior wall panels and ceramic slabs. During the construction of walls using these building panels, multiple panels are joined together vertically and horizontally. These building panels are typically bundled in a predetermined quantity and stored and transported on transport pallets. Regarding techniques related to the bundling of such building panels, for example, Patent Document 1 describes the use of a thin sheet called backing paper to cover and protect the coating surface of the building panel.
[0003] Existing technical documents
[0004] Patent documents
[0005] Patent Document 1: Japanese Patent Application Publication No. 2005-41546 Summary of the Invention
[0006] The problem that the invention aims to solve
[0007] In building panels, coatings are sometimes applied to their exterior surfaces. When a coated building panel is pressed, a change in the texture of the coating surface at the pressed area can result in a new gloss (i.e., the net external light reflectance at the pressed area is higher than that of the adjacent non-pressed area). This is believed to be due to the microscopic deformation (e.g., planarization) of the microscopic irregularities on the coating surface corresponding to a specified texture caused by pressing. In building panels or bundles of building panels (hereinafter referred to as bundles) loaded in multiple layers on transport pallets, the bottommost building panel, which bears the greatest load, is particularly prone to developing an unexpected new gloss in its coating.
[0008] When building panels constituting the exterior or interior walls contain building panels that produce the aforementioned gloss caused by the pressing of the coating, the gloss can sometimes be noticeable and detract from the appearance of the exterior or interior walls, depending on the angle of illumination from sunlight, artificial light, or other sources. In particular, when the coating on the surface of the building panel is a matte coating, the undesirable gloss can sometimes be easily noticeable and detract from the appearance of the exterior or interior walls.
[0009] The present invention is made based on the following circumstances, and its object is to provide a bundle suitable for suppressing the gloss generated by pressing on the coating film on the surface of building panels and a method thereof.
[0010] Solution for solving the problem
[0011] According to a first aspect of the invention, a bundle body is provided. The bundle body comprises a first building plate and a backing paper overlapping the first building plate. The first building plate has a first surface including a first coated surface and a second surface opposite to the first surface. The backing paper has a third surface adjacent to the first building plate and a fourth surface opposite to the third surface. The third surface is in contact with the first coated surface. The absolute value of the difference between the 60-degree gloss of the first coated surface and the 60-degree gloss of the third surface is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the first coated surface and the 85-degree gloss of the third surface is 3.0 or less.
[0012] In this bundle, the first and third coated surfaces, which are in contact with each other, have microscopic irregularities corresponding to their respective gloss levels. Furthermore, the microscopic irregularities of the first and third coated surfaces are approximately the same as those of the third surface, such that the difference between the first and third coated surfaces is less than 3.0 when a gloss level of 60 degrees with a relatively small incident angle is measured, and when a gloss level of 85 degrees with a relatively large incident angle is measured.
[0013] In such a bundle, even when the first coated surface of the first building board is microscopically deformed by pressing against the third side of the backing paper, this deformation is caused by the microscopic unevenness of the third side, which is similar to the microscopic unevenness of the pressed area before deformation (for example, the microscopic unevenness of the third side is transferred to the first coated surface). Therefore, at the pressed area on the first coated surface, the change in texture is suppressed, and new gloss is less likely to occur.
[0014] As described above, the bundle body of the first aspect of the present invention is suitable for suppressing the generation of gloss on the coating film on the surface of a building board caused by pressing.
[0015] The bundle body of the present invention preferably includes a second building board that overlaps with the first building board through a liner paper. The second building board has a fifth surface on the side adjacent to the first building board and a sixth surface on the side opposite to the fifth surface. The fifth surface includes a second coated surface. The fourth surface of the liner paper on the side adjacent to the second building board is in contact with the second coated surface. The absolute value of the difference between the 60-degree gloss of the second coated surface and the 60-degree gloss of the fourth surface is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the second coated surface and the 85-degree gloss of the fourth surface is 3.0 or less.
[0016] In this structure, the second coating surface and the fourth surface, which are in contact with each other in the second building board and the backing paper, have microscopic uneven shapes corresponding to their respective gloss levels. Furthermore, the microscopic uneven shapes of the second coating surface and the fourth surface are approximately the same: the difference between the second coating surface and the fourth surface is less than 3.0 when a gloss level of 60 degrees (a relatively small angle of incidence) is measured, and also less than 3.0 when a gloss level of 85 degrees (a relatively large angle of incidence) is measured. In this bundle, even when the second coating surface of the second building board is microscopically deformed by pressing against the fourth surface of the backing paper, this deformation is caused by the transfer of the microscopic uneven shape of the fourth surface, which is similar to the microscopic uneven shape before deformation at the pressed area, onto the second coating surface. Therefore, at the pressed area on the second coating surface, changes in texture are suppressed, and new gloss is less likely to occur.
[0017] In a preferred embodiment of the first aspect of the invention, the third side of the backing paper has an uneven shape formed by a plurality of equally arranged micro-protrusions protruding toward the first building board side. This structure, with equally arranged micro-protrusions on the third side of the backing paper, is suitable for the micro-protrusions to make uniform point contact with the first coating of the first building board. When the first coating surface of the first building board is pressed by the third side of the backing paper, the pressing pressure is efficiently dispersed, thus suppressing deformation at the pressed area. Furthermore, since any part of the third side of the backing paper has an uneven shape similar to the micro-uneven shape of the first coating surface of the first building board, even if the first coating surface of the first building board is microscopically deformed by the pressing of the third side of the backing paper, this deformation is caused, for example, by the transfer of the micro-uneven shape of the third side, which is similar to the micro-uneven shape of the pressed area before deformation, onto the first coating surface. At the pressed area on the first coating surface, changes in texture are suppressed, and a new gloss is easily generated.
[0018] In a preferred embodiment of the first aspect of the invention, the third surface of the backing paper has a concave-convex shape formed by equally arranged plurality of minute protrusions protruding toward the first building board side, and the fourth surface has a concave-convex shape with a plurality of minute recesses arranged at positions corresponding to the minute protrusions. The structure in which the minute protrusions are equally arranged on the third surface of the backing paper is suitable for the minute protrusions to make uniform point contact with the first coating of the first building board. When the first coating surface of the first building board is pressed by the third surface of the backing paper, the pressing force is efficiently dispersed, thus suppressing deformation of the pressed area. Furthermore, the structure in which the minute recesses are equally arranged on the fourth surface of the backing paper is suitable for the fourth surface of the backing paper to make uniform point contact with the second coating of the second building board. When the second coating surface of the second building board is pressed by the fourth surface of the backing paper, the pressing force is efficiently dispersed, thus suppressing deformation of the pressed area. Furthermore, since any part of the third side of the backing paper has a micro-uneven shape similar to the micro-uneven shape of the first coating surface of the first building board, even if the first coating surface of the first building board is microscopically deformed by pressing with the third side of the backing paper, this deformation is caused by the micro-uneven shape of the third side, which is similar to the micro-uneven shape of the pressed area before deformation, being transferred onto the first coating surface. At the pressed area of the first coating surface, the change in texture is suppressed, and new gloss is less likely to occur. Similarly, since any part of the fourth side of the backing paper has a micro-uneven shape similar to the micro-uneven shape of the second coating surface of the second building board, even if the second coating surface of the second building board is microscopically deformed by pressing with the fourth side of the backing paper, this deformation is caused by the micro-uneven shape of the fourth side, which is similar to the micro-uneven shape of the pressed area before deformation, being transferred onto the second coating surface. At the pressed area of the second coating surface, the change in texture is suppressed, and new gloss is less likely to occur.
[0019] According to a second aspect of the present invention, a method for manufacturing a bundle body is provided. The manufacturing method includes a preparation step and an overlapping step. In the preparation step, a first building board and a backing paper are prepared. The first building board has a first surface including a first coated surface and a second surface opposite to the first surface. The backing paper has a third surface and a fourth surface opposite to the third surface. In the overlapping step, the first building board and the backing paper are overlapped such that the first coated surface contacts the third surface. The absolute value of the difference between the 60-degree gloss of the first coated surface and the 60-degree gloss of the third surface is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the first coated surface and the 85-degree gloss of the third surface is 3.0 or less.
[0020] In this manufacturing method, the first coated surface of the first building board and the third surface of the backing paper have microscopic unevenness. Furthermore, the microscopic unevenness of the first coated surface and the third surface are approximately such that the difference between the first coated surface and the third surface is 3.0 or less when a gloss level of 60 degrees (a relatively small angle of incidence) is measured, and when a gloss level of 85 degrees (a relatively large angle of incidence) is measured.
[0021] When the first coating surface of a first building board, whose microscopic uneven shape is similar to that of a first building board, is contacted with the third surface of a backing paper in a manner that protects the first coating surface of the first building board, even if the first coating surface of the first building board is microscopically deformed by pressing against the third surface of the backing paper, this deformation becomes a microscopic uneven shape of the third surface that is similar to the microscopic uneven shape of the pressed area before deformation, for example, transferred onto the first coating surface. Therefore, at the pressed area of the first coating surface, changes in texture are suppressed, and new gloss is less likely to occur.
[0022] The preferred manufacturing method further includes the following step: a second building board having a fifth side including a second coating surface and a sixth side opposite to the fifth side is overlapped with a first building board, such that the second coating surface contacts the fourth side of the backing paper. The absolute value of the difference between the 60-degree gloss of the second coating surface and the 60-degree gloss of the fourth side is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the second coating surface and the 85-degree gloss of the fourth side is 3.0 or less.
[0023] In this structure, the second coating surface and the fourth surface, which are in contact with each other in the second building board and the backing paper, have microscopic uneven shapes corresponding to their respective gloss levels. Furthermore, the microscopic uneven shapes of the second coating surface and the fourth surface are approximately the same as those of the fourth surface: the difference between the second coating surface and the fourth surface is less than 3.0 when a gloss level of 60 degrees (with a relatively small incident angle) is measured, and the difference is less than 3.0 when a gloss level of 85 degrees (with a relatively large incident angle) is measured. When the second coating surface of the second building board, with its approximately similar microscopic uneven shapes, contacts the fourth surface of the backing paper in a manner that protects the second coating surface of the second building board using the fourth surface of the backing paper, even if the second coating surface of the second building board is microscopically deformed by pressing against the fourth surface of the backing paper, this deformation results in a microscopic uneven shape of the fourth surface that is approximately the same as the microscopic uneven shape of the pressed area before deformation, for example, being transferred onto the second coating surface. Therefore, at the pressed area of the second coating surface, changes in texture are suppressed, and a new gloss level is easily generated.
[0024] In a preferred embodiment of the first aspect of the invention, the third side of the backing paper has an uneven shape formed by a plurality of equally arranged micro-protrusions protruding toward the first building board side. This structure, with the micro-protrusions evenly arranged on the third side of the backing paper, is suitable for the micro-protrusions to make uniform point contact with the first coating of the first building board. When the first coating surface of the first building board is pressed by the third side of the backing paper, the pressing pressure is efficiently dispersed, thus suppressing deformation at the pressed area. Furthermore, since any portion of the third side of the backing paper has an uneven shape similar to the micro-uneven shape of the first coating surface of the first building board, even if the first coating surface of the first building board is microscopically deformed by the pressing of the third side of the backing paper, this deformation is caused, for example, by the transfer of the micro-uneven shape of the third side, which is similar to the micro-uneven shape of the pressed area before deformation, onto the first coating surface. At the pressed area on the first coating surface, changes in texture are suppressed, and new gloss is less likely to occur.
[0025] In a preferred embodiment of the first aspect of the invention, the third surface of the backing paper has a concave-convex shape formed by a plurality of equally arranged minute protrusions protruding toward the first building board side, and the fourth surface has a concave-convex shape with a plurality of minute recesses arranged at positions corresponding to the minute protrusions. The structure in which the minute protrusions are evenly arranged on the third surface of the backing paper is suitable for the minute protrusions to make uniform point contact with the first coating of the first building board. When the first coating surface of the first building board is pressed by the third surface of the backing paper, the pressing force is efficiently dispersed, thus suppressing deformation of the pressed area. Furthermore, the structure in which the minute recesses are evenly arranged on the fourth surface of the backing paper is suitable for the fourth surface of the backing paper to make uniform point contact with the second coating of the second building board. When the second coating surface of the second building board is pressed by the fourth surface of the backing paper, the pressing force is efficiently dispersed, thus suppressing deformation of the pressed area. Furthermore, since any part of the third side of the backing paper has a micro-uneven shape similar to the micro-uneven shape of the first coating surface of the first building board, even if the first coating surface of the first building board is microscopically deformed by pressing with the third side of the backing paper, this deformation is caused by the micro-uneven shape of the third side, which is similar to the micro-uneven shape of the pressed area before deformation, being transferred onto the first coating surface. At the pressed area of the first coating surface, the change in texture is suppressed, and new gloss is less likely to occur. Similarly, since any part of the fourth side of the backing paper has a micro-uneven shape similar to the micro-uneven shape of the second coating surface of the second building board, even if the second coating surface of the second building board is microscopically deformed by pressing with the fourth side of the backing paper, this deformation is caused by the micro-uneven shape of the fourth side, which is similar to the micro-uneven shape of the pressed area before deformation, being transferred onto the second coating surface. At the pressed area of the second coating surface, the change in texture is suppressed, and new gloss is less likely to occur. Attached Figure Description
[0026] Figure 1 This is a schematic cross-sectional view of the bundle body according to the first embodiment of the present invention.
[0027] Figure 2 A magnified three-dimensional view showing an example of backing paper.
[0028] Figure 3 yes Figure 2 The diagram shows a cross-sectional view of the backing paper.
[0029] Figure 4 express Figure 1 The method for manufacturing the bundle shown.
[0030] Figure 5 express Figure 1 The diagram shows a bundle being loaded in multiple layers on a pallet.
[0031] Figure 6 This is a schematic cross-sectional view of the building board bundle body according to the second embodiment of the present invention.
[0032] Figure 7 express Figure 6 The method for manufacturing the bundle shown.
[0033] Figure 8 express Figure 6 The diagram shows a bundle being loaded in multiple layers on a pallet. Detailed Implementation
[0034] Figure 1 This is a schematic cross-sectional view of the bundle body X1 according to the first embodiment of the present invention. The bundle body X1 includes a first building plate 10 and a backing paper 20 overlapping the first building plate 10.
[0035] The first building panel 10 has a first surface 11 on the side of the backing paper 20 and a second surface 12 on the side opposite to the first surface 11. The first surface 11 includes a first coating surface 11A.
[0036] The first coating surface 11A is formed, for example, by applying a coating material and drying it to form a coating film. Examples of coating materials include acrylic resin coatings, silicone acrylic resin coatings, silicone resin coatings, fluoropolymer resin coatings, and polyurethane resin coatings. The coating material may also contain resin beads, pigments, and fillers. The thickness of the coating film is, for example, 10 to 100 μm. The first coating surface 11A may also have a laminated structure comprising multiple resin films. For example, the first coating surface 11A may also have a laminated structure sequentially comprising an undercoat, an intermediate coating, and a transparent coating.
[0037] The backing paper 20 has a third surface 21 on the side facing the first building plate 10 and a fourth surface 22 on the side opposite to the third surface 21. The third surface 21 is in contact with the first coating surface 11A. The third surface 21 preferably has an uneven shape formed by a plurality of small protrusions equally arranged on the side of the first building plate 10.
[0038] The backing paper 20 is a thin sheet that covers and protects the first coating surface 11A of the first building panel 10. The shape of the backing paper 20 is only needed to cover the first coating surface 11A; it can be a single sheet, two or more sheets stacked together, or a tubular sheet. The backing paper 20 can be configured to cover only the first coating surface 11A, or it can be configured to completely surround the first building panel 10.
[0039] As a material constituting the liner 20, a resin film can be cited as an example. Examples of resin films include polyethylene, polypropylene, vinyl chloride, nylon, polyester, polyvinyl alcohol, ethylene vinyl acetate copolymer, and triacetate. The liner 20 can also be a laminate of multiple resin films. Alternatively, the liner 20 can be a laminate of a resin film with cloth or paper.
[0040] The embossed shape of the liner paper 20 can be manufactured by methods such as the incorporation of inorganic or organic particles during liner paper manufacturing, the transfer of the surface shape of the metal roller, physical embossing based on sand blowing, and chemical etching.
[0041] The thickness of the liner 20 is not particularly limited, but in the case of resin film and laminate, it is preferably 40 to 500 μm, and in the case of a laminate of resin film and cloth or paper, it is preferably 100 to 500 μm.
[0042] In the bundle X1, the absolute value of the difference between the 60-degree gloss of the first coating surface 11A and the 60-degree gloss of the third surface 21 is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the first coating surface 11A and the 85-degree gloss of the third surface 21 is 3.0 or less.
[0043] Figure 4 This describes a method for manufacturing the bundle X1. The manufacturing method includes a preparation step and an overlap step, as described below.
[0044] In the preparation process, a first building board 10 and a backing paper 20 are prepared. The first building board 10 has a first surface 11 including a first coating surface 11A and a second surface 12 on the side opposite to the first surface 11. The backing paper 20 has a third surface 21 and a fourth surface 22 on the side opposite to the third surface 21.
[0045] In the overlapping process, the first building board 10 and the backing paper 20 are overlapped in such a way that the first coating surface 11A contacts the third surface 21. As described above, the absolute value of the difference between the 60-degree gloss of the first coating surface 11A and the 60-degree gloss of the third surface 21 is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the first coating surface 11A and the 85-degree gloss of the third surface 21 is 3.0 or less.
[0046] In the bundle X1, the first coating surface 11A and the third surface 21, which are in contact with each other in the overlapping first building board 10 and backing paper 20, have microscopic uneven shapes corresponding to their respective gloss levels. Furthermore, the microscopic uneven shapes of the first coating surface 11A and the third surface 21 are approximately the same as those of the third surface 21, such that the difference between the first coating surface and the third surface is less than 3.0 when a gloss level of 60 degrees with a relatively small incident angle is measured, and when a gloss level of 85 degrees with a relatively large incident angle is measured.
[0047] In such a bundle X1, for example, in... Figure 5 In the multi-layered loading state shown, even when the first coated surface 11A of the first building board 10 is microscopically deformed by pressing against the third surface 21 of the backing paper 20, this deformation is caused by the microscopic unevenness of the third surface 21, which is similar to the microscopic unevenness of the pressed area before deformation (for example, the microscopic unevenness of the third surface 21 is transferred onto the first coated surface 11A). Therefore, at the pressed area in the first coated surface 11A, the change in texture is suppressed, and new gloss is less likely to occur. Figure 5 This is an illustrative diagram showing the state in which a bundle X1 is loaded in four layers on a pallet P.
[0048] As described above, the bundle X1 is suitable for suppressing the gloss generated by pressing on the coating film on the surface of the building board.
[0049] As described above, the third surface 21 preferably has an uneven shape comprising a plurality of minute protrusions protruding toward the first building plate 10 side, and the plurality of minute protrusions are equally arranged. Such a structure is suitable for efficiently dispersing the pressing force when the first coating surface 11A of the first building plate 10 is pressed by the third surface 21 of the backing paper 20, and therefore suitable for suppressing deformation of the pressed area.
[0050] Figure 6 This is a schematic cross-sectional view of the bundle X2 according to the second embodiment of the present invention. The bundle X2 includes a first building plate 10, a liner paper 20, and a second building plate 30. The bundle X2 differs from the bundle X1 described above in that it also includes the second building plate 30.
[0051] The second building panel 30 has a fifth surface 31 on the side adjacent to the first building panel 10 and a sixth surface 32 on the side opposite to the fifth surface 31, and overlaps with the first building panel 10 through a backing paper 20. The fifth surface 31 includes a second coating surface 31A.
[0052] In this embodiment, the fourth surface 22 of the backing paper 20 on the side facing the second building plate 30 is in contact with the second coating surface 31A. In the backing paper 20 of this embodiment, its third surface has a concave-convex shape including a plurality of tiny protrusions protruding toward the first building plate 10 side and the plurality of tiny protrusions being equally arranged, and the fourth surface 22 has a concave-convex shape including a plurality of tiny recesses at positions corresponding to the plurality of tiny protrusions.
[0053] In the bundle X2, the absolute value of the difference between the 60-degree gloss of the second coating surface 31A and the 60-degree gloss of the fourth surface 22 is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the second coating surface 31A and the 85-degree gloss of the fourth surface 22 is 3.0 or less.
[0054] Figure 7 This describes a method for manufacturing such a bundle X2. This manufacturing method includes the aforementioned preparation step, overlapping step (first overlapping step), and... Figure 7 The overlapping process shown (second overlapping process).
[0055] In the second overlapping process, a second building plate 30 having a fifth surface 31 including a second coating surface 31A and a sixth surface 32 opposite to the fifth surface 31 is overlapped with a first building plate 10 through a backing paper 20, such that the second coating surface 31A contacts the fourth surface 22 of the backing paper 20. As described above, the absolute value of the difference between the 60-degree gloss of the second coating surface 31A and the 60-degree gloss of the fourth surface 22 is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the second coating surface 31A and the 85-degree gloss of the fourth surface 22 is 3.0 or less.
[0056] In the bundle X2 manufactured in this way, the second coating surface 31A and the fourth surface 22, which are in contact with each other in the second building board 30 and the liner paper 20, have microscopic uneven shapes corresponding to their respective gloss levels. Furthermore, the microscopic uneven shapes of the second coating surface 31A and the fourth surface 22 are approximately the same as those of the fourth surface 22, such that the difference between the second coating surface 31A and the fourth surface 22 is less than 3.0 when a gloss level of 60 degrees with a relatively small incident angle is measured in a gloss measurement, and when a gloss level of 85 degrees with a relatively large incident angle is measured.
[0057] In such a bundle X2, for example, in... Figure 8As shown, even when the second coating surface 31A of the second building board 30 is microscopically deformed by being pressed by the fourth surface 22 of the backing paper 20, the deformation is caused by the microscopic unevenness of the fourth surface 22, which is similar to the microscopic unevenness of the pressed area before deformation. Therefore, in the pressed area of the second coating surface 31A, the change in texture is suppressed, and new gloss is less likely to occur. Figure 8 This is an illustrative diagram showing the bundle X2 loaded in four layers on pallet P.
[0058] In the bundle X2, in addition to the aforementioned technical effects related to the bundle X1, it also performs the aforementioned technical effects.
[0059] Furthermore, in the backing paper 20 of this embodiment, as described above, the third surface 21 has an uneven shape including a plurality of minute protrusions protruding toward the first building plate 10 side and the plurality of minute protrusions being equally arranged, and the fourth surface 22 has an uneven shape including a plurality of minute recesses at positions corresponding to the plurality of minute protrusions. This structure, when the first coating surface 11A of the first building plate 10 is pressed by the third surface 21 of the backing paper 20, and when the second coating surface 31A of the second building plate 30 is pressed by the fourth surface 22 of the backing paper 20, is suitable for efficiently dispersing the pressing pressure, and therefore suitable for suppressing deformation of the pressed portion.
[0060] Example
[0061] [Example 1]
[0062] <Fabrication of Building Panels>
[0063] First, an acrylic coating was applied to the surface of an inorganic board (1820mm × 470mm × 16mm, 17kg) with a plain textured surface and dried to form a 20μm thick intermediate coating. Next, a silicone acrylic coating containing resin beads was applied to the intermediate coating and dried to form a 10μm thick matte transparent coating. Two building panels B1 with a matte transparent coating on one side were then produced as described above.
[0064] <Making of Bundles>
[0065] First, a backing paper S1 (50 μm thick, polyethylene film) is placed on a matte transparent coating of one building panel B1, with the back sides facing each other and in contact. The backing paper S1 is embossed, having an uneven shape on its surface including multiple small protrusions (equally arranged) formed by the embossing process, and an uneven shape on its back side including multiple small recesses at positions corresponding to the small protrusions. On the surface of the backing paper S1, small protrusions of 310 × 410 μm in size and 42 μm in height are arranged in a staggered pattern at approximately equal intervals on the top surface, thus forming a uniform unevenness. On the back side of the backing paper S1, small recesses of 310 × 410 μm in size and 38 μm in depth are arranged in a staggered pattern at approximately equal intervals at positions corresponding to the small protrusions, thus forming a uniform unevenness. Next, another building panel B1 is overlapped and placed on one building panel B1 with the backing paper S1 in between. The other building board B1 is placed with its matte transparent coating facing and in contact with the other side of the backing paper S1. As described above, a structure is created that... Figure 6 The bundle shown has the same layered structure as the bundle shown.
[0066] [Example 2 and Comparative Examples 1 and 2]
[0067] Except for replacing the liner S1 with liner S2 (Example 2), liner S3 (Comparative Example 1) or liner S4 (Comparative Example 2), each bundle of Example 2 and Comparative Examples 1 and 2 was made in the same manner as the bundle of Example 1.
[0068] The backing paper S2 is a backing paper (80 μm thick, polyethylene film) with a pear-shaped pattern formed by embossing. The backing paper S2 has a pear-shaped pattern (including multiple equally arranged small protrusions) on the surface as an uneven shape formed by the embossing process, and has an uneven shape on the back side including multiple small recesses at positions corresponding to the multiple small protrusions.
[0069] The backing paper S3 is a backing paper containing calcium carbonate particles (56 μm thick, polyethylene film containing calcium carbonate particles).
[0070] The liner paper S4 is a liner paper (200μm thick) obtained by laminating both sides of kraft paper base paper with polyethylene resin.
[0071] [Example 3]
[0072] <Fabrication of Building Panels>
[0073] First, an acrylic coating is applied to the surface of an inorganic board (1820mm × 470mm × 16mm, 17kg) with a brick-patterned appearance and dried to form a 50μm thick intermediate coating. Next, a silicone-acrylic coating containing resin beads is applied to the intermediate coating and dried to form a 40μm thick matte transparent coating. Two building panels B2 with a matte transparent coating on one side are then produced as described above.
[0074] <Making of Bundles>
[0075] On one building board B2, a matte transparent coating is applied with backing paper S1 (50 μm thick, polyethylene film) facing each other and in contact. Then, another building board B2 is placed on top of the first building board B2, with the backing paper S1 in between. The other building board B2 is then placed with its matte transparent coating facing and in contact with the other side of the backing paper S1.
[0076] As described above, produce the same Figure 6 The bundle shown is a bundle with the same layered structure.
[0077] [Comparative Example 3]
[0078] Except that lining paper S4 is used instead of lining paper S1, the bundle body of Comparative Example 3 is made in the same way as the bundle body of Example 3.
[0079] [Example 4]
[0080] <Fabrication of Building Panels>
[0081] First, an acrylic coating is applied to the surface of an inorganic board (1820mm × 470mm × 16mm, 17kg) with a plain textured surface and dried to form a 40μm thick intermediate coating. Next, a silicone-acrylic coating without resin beads is applied over the intermediate coating to form a final coating. This final coating is then dried to form a 5μm thick glossy transparent coating. Two architectural panels B3, each with a glossy transparent coating on one side, are produced as described above.
[0082] <Making of Bundles>
[0083] On a glossy transparent coating of a building board B3, backing paper S5 (60 μm thick, polyethylene film) is placed with its back sides facing each other and in contact. The backing paper S5 is embossed, having an uneven shape on its surface including a plurality of equally spaced micro-protrusions formed by the embossing process, and an uneven shape on its back side including a plurality of micro-recesses at positions corresponding to the micro-protrusions. Specifically, on the surface of the backing paper S5, approximately 4 × 2 mm rhomboid micro-protrusions with a height of 70 μm are arranged in a staggered pattern at approximately equal intervals on the top surface, thus forming a uniform unevenness. On the top surface of each micro-protrusion, a plurality of even smaller elliptical protrusions of approximately 300 × 500 μm are formed, thus forming an unevenness. On the back side of the backing paper S5, rhomboid micro-recesses are arranged in a staggered pattern at approximately equal intervals at positions corresponding to the micro-protrusions, thus forming a uniform unevenness. Next, on one of the building panels B3, another building panel B3 is overlapped and placed on top of it through the backing paper S5. The other building panel B3 is placed with its glossy transparent coating facing and in contact with the other side of the backing paper S5. As described above, a structure is produced that... Figure 6 The bundle shown is a bundle with the same layered structure.
[0084] [Comparative Examples 4-6]
[0085] Except for using lining paper S4 (Comparative Example 4), lining paper S6 (Comparative Example 5), or lining paper S7 (Comparative Example 6) instead of lining paper S5, each of the bundles in Comparative Examples 4 to 6 was made in the same manner as the bundle in Example 4.
[0086] The liner S6 is an unstretched polypropylene sheet (100μm thick).
[0087] The liner S7 is a liner (76 μm thick) obtained by forming a polyethylene film containing calcium carbonate particles into a tubular shape.
[0088] <Gloss Measurement>
[0089] Regarding the surfaces of the matte transparent coatings of building panels B1 and B2, the surface of the glossy transparent coating of building panel B3, and the surfaces and backs of the backing papers S1 to S7, gloss levels of 60 degrees and 85 degrees were measured according to JIS Z8741. In this measurement, a gloss meter (trade name "micro-TRI-gloss with standard holder, model 4430", manufactured by BYK Gardner) was used.
[0090] Regarding the surface of the matte transparent coating on building board B1, the gloss level is 60 degrees (G). 60 Gloss level is 4.0, 85 degrees (G). 85The gloss level is 1.7. Regarding the surface of the matte transparent coating on architectural panel B2, the gloss level is G at 60 degrees. 60 It has a gloss level of 3.3 and a gloss rating of 85 degrees (G). 85 The value is 3.2. Regarding the surface of the glossy transparent coating on architectural panel B3, the gloss level is G at 60 degrees. 60 It has a gloss level of 12.7 and a gloss rating of 85 degrees (G). 85 It is 12.8.
[0091] In addition, regarding Examples 1-4 and Comparative Examples 1-6, the gloss G of the surface and back of the backing paper used is shown in Table 1 at 60 degrees. 60 The gloss level (G) of the surface and back of the backing paper used is 85 degrees. 85 The absolute value ΔG of the difference in 60-degree gloss between the surface of the coating film on the building board and the surface or back of the backing paper. 60 And the absolute value ΔG of the difference in 85-degree gloss between the surface of the coating film on the building board and the surface or back of the backing paper. 85 .
[0092] <Evaluation of gloss production>
[0093] Regarding each bundle of Examples 1-4 and Comparative Examples 1-6, the gloss production of the coating surface of the building panels was evaluated as follows. First, 25 bundles were stacked in multiple layers. Then, after 24 hours, the bundles were unbundled, and the surface of the coating of each building panel in the bottommost bundle was visually observed to check for the production of any new gloss. The results are shown in Table 1.
[0094] [Table 1]
[0095]
[0096] In Example 1, the absolute value G of the difference in 60-degree gloss between the coating surface of building board B1 and the surface of backing paper S1 is... 60 And the absolute value G of the difference in gloss level of 85 degrees. 85 All values were below 3.0. No new gloss was observed on the coating surface of the building panel B1, which was disposed on the surface side of the backing paper S1. Furthermore, in Example 1, the absolute value G of the difference in 60-degree gloss between the coating surface of the building panel B1 and the back side of the backing paper S1 was... 60 And the absolute value G of the difference in gloss level of 85 degrees. 85 All values were below 3.0. No new gloss was observed on the coating surface of the building board B1, which was disposed on the back side of the backing paper S1.
[0097] In Example 2, the absolute value G of the difference in 60-degree gloss between the coating surface of building board B1 and the back side of backing paper S2 is... 60 And the absolute value G of the difference in gloss level of 85 degrees.85 All values were below 3.0. No new gloss was observed on the coating surface of the building board B1, which was disposed on the back side of the backing paper S2.
[0098] In Example 3, the absolute value G of the difference in 60-degree gloss between the coating surface of building board B2 and the surface of backing paper S1 is... 60 And the absolute value G of the difference in gloss level of 85 degrees. 85 All values were below 3.0. No new gloss was observed on the coating surface of the building panel B2, which was disposed on the surface side of the backing paper S1. Furthermore, in Example 3, the absolute value G of the difference in 60-degree gloss between the coating surface of the building panel B2 and the back side of the backing paper S1 was... 60 And the absolute value G of the difference in gloss level of 85 degrees. 85 All values were below 3.0. No new gloss was observed on the coating surface of the building board B2, which was disposed on the back side of the backing paper S1.
[0099] In Example 4, the absolute value G of the difference in 60-degree gloss between the coating surface of building board B3 and the surface of backing paper S5 is... 60 And the absolute value G of the difference in gloss level of 85 degrees. 85 All values were below 3.0. No new gloss was observed on the coating surface of the building panel B3, which was disposed on the surface side of the backing paper S5. Furthermore, in Example 4, the absolute value G of the difference in 60-degree gloss between the coating surface of the building panel B3 and the back side of the backing paper S5 was... 60 And the absolute value G of the difference in gloss level of 85 degrees. 85 All values were below 3.0. No new gloss was observed on the coating surface of the building board B3, which was disposed on the back side of the backing paper S5.
[0100] Explanation of reference numerals in the attached figures
[0101] X1 and X2 bundles
[0102] 10 First Building Slab
[0103] 11 First page
[0104] 11A First Coating
[0105] 12 Second page
[0106] 20 backing papers
[0107] 21 Third page
[0108] 22 Fourth page
[0109] 30 First Building Board
[0110] 31 Page 5
[0111] 31A Second Coating
[0112] 32. Page 6.
Claims
1. A building panel bundle comprising a first building panel and a backing paper overlapping the first building panel, wherein, The first building panel has a first side and a second side opposite to the first side, the first side including a first coating surface. The lining paper has a third side against the side of the first building panel and a fourth side opposite to the third side. The third surface is in contact with the first coating surface. The absolute value of the difference between the first coated surface and the third surface at 60 degrees gloss, as measured according to JIS Z 8741, is 3.0 or less, and the absolute value of the difference between the first coated surface and the third surface at 85 degrees gloss, as measured according to JIS Z 8741, is 3.0 or less.
2. The building panel bundle according to claim 1, wherein, The building panel bundle further includes a second building panel that overlaps with the first building panel, separated by the liner paper. The second building panel has a fifth side adjacent to the first building panel and a sixth side opposite to the fifth side, the fifth side including a second coating surface. The fourth side of the lining paper, on the side closest to the second building board, is in contact with the second coating surface. The absolute value of the difference between the 60-degree gloss of the second coating surface and the 60-degree gloss of the fourth surface is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the second coating surface and the 85-degree gloss of the fourth surface is 3.0 or less.
3. The building panel bundle according to claim 1 or 2, wherein, The third surface has a concave-convex shape formed by a plurality of tiny protrusions that are equally arranged and protrude toward the side of the first building slab.
4. The building panel bundle according to claim 2, wherein, The third surface has a concave-convex shape formed by a plurality of equally arranged tiny protrusions protruding toward the first building slab side. The fourth surface has a concave-convex shape that includes multiple micro-concave portions at positions corresponding to the multiple micro-protrusions.
5. A method for manufacturing a building panel bundle, wherein, The process includes the following steps: Prepare a first building board and a backing paper. The first building board has a first side and a second side opposite to the first side, the first side including a first coated surface. The backing paper has a third side and a fourth side opposite to the third side. The first building panel and the backing paper are aligned such that the first coated surface contacts the third surface. The absolute value of the difference between the first coated surface and the third surface at 60 degrees gloss, as measured according to JIS Z 8741, is 3.0 or less, and the absolute value of the difference between the first coated surface and the third surface at 85 degrees gloss, as measured according to JIS Z 8741, is 3.0 or less.
6. The method for manufacturing a building panel bundle according to claim 5, wherein, The method for manufacturing the building panel bundle further includes the following steps: a second building panel having a fifth side including a second coating surface and a sixth side opposite to the fifth side is overlapped with the first building panel, such that the second coating surface contacts the fourth side of the backing paper, while the backing paper is in contact with it. The absolute value of the difference between the 60-degree gloss of the second coating surface and the 60-degree gloss of the fourth surface is 3.0 or less, and the absolute value of the difference between the 85-degree gloss of the second coating surface and the 85-degree gloss of the fourth surface is 3.0 or less.
7. The method for manufacturing a building panel bundle according to claim 5 or 6, wherein, The third surface has a concave-convex shape formed by a plurality of tiny protrusions that are equally arranged and protrude toward the side of the first building slab.
8. The method for manufacturing a building panel bundle according to claim 6, wherein, The third surface has a concave-convex shape formed by a plurality of equally arranged tiny protrusions protruding toward the first building slab side. The fourth surface has a concave-convex shape that includes multiple micro-concave portions at positions corresponding to the multiple micro-protrusions.