Plate with coating material and method for peeling coating material from plate with coating material

Abstract

To provide a plate with a coating material that is easy to peel off the coating material from a base material and a method for peeling off the coating material from a plate with a coating material.SOLUTION: A plate-like body with a coating material attached to the surface of a plate-like base material by means of an adhesive, having a first adhesive area in which a plurality of first adhesive lines with the adhesive applied in a linear pattern are striped, and a second adhesive area in which a plurality of second adhesive lines with the adhesive applied in a linear pattern that intersects the first adhesive lines are striped. The first adhesive region and the second adhesive region are arranged next to each other, and their boundaries extend in a straight line, and the angle at which the first adhesive line and the second adhesive line intersect at the boundary is 90 degrees or less.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a coated plate and a method for removing a coating from the coated plate. [Background technology]

[0002] Conventionally, for example, a plate-like body has been covered with a covering material. For example, Patent Document 1 discloses a molded ceiling for a vehicle in which a skin is bonded to the surface of a base material with an adhesive. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-186143 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been a demand for recycling components of various products. The molded ceiling described in Patent Document 1 is configured such that the base material is composed of solid layers on the front and back sides made of the same resin material and a foam layer inside, and when the skin is peeled off from the base material, part of the fragile foam layer is destroyed, allowing the skin to be peeled off together with the solid layer from the base material. With this configuration, it is said that the adhesive and skin can be completely separated from the base material, and the base material can be recovered without impurities.

[0005] However, in the above-mentioned conventional structure, when the skin is peeled off, a part of the substrate (a part of the solid layer and the foam layer) is peeled off together with the skin, and the amount of substrate that can be recycled is reduced, so there is a demand for recycling the substrate without waste. In addition, there is a problem that the structure of the substrate is limited to a structure consisting of a foam layer and a solid layer made of the same resin, and it cannot be applied to substrates of other structures.

[0006] The technology disclosed in this specification has been made in consideration of the above-mentioned circumstances, and aims to provide a coated plate that allows the coating to be easily peeled from the substrate, and a method for peeling the coating from a coated plate. [Means for solving the problem]

[0007] The technology disclosed in this specification is a plate-shaped body with a coating material in which a coating material is adhered to the surface of a plate-shaped base material with an adhesive, the plate-shaped base material having a first adhesive region in which a plurality of first adhesive lines formed by linear application of the adhesive are arranged in a striped pattern, and a second adhesive region in which a plurality of second adhesive lines formed by linear application of the adhesive that intersect with the first adhesive lines are arranged in a striped pattern, the first adhesive region and the second adhesive region being arranged adjacent to each other and having a boundary therebetween that extends in a straight line, and the angle at which the first adhesive lines and the second adhesive lines intersect at the boundary is 90 degrees or less.

[0008] According to the above configuration, the substrate and the covering material are bonded to a part of the plate-like body, not to the whole surface, so that the bonding area is small and the covering material can be easily peeled off from the substrate. Moreover, when peeling the covering material from the substrate, the covering material can be pulled in a direction along the boundary from the side where the intersection of the first adhesive line and the second adhesive line is convex, so that the covering material can be peeled off along each adhesive line starting from the intersection of the first adhesive line and the second adhesive line, and because starting points (intersections) are generated one after another, the covering material can be easily peeled off with a relatively small force.

[0009] The base material has a narrow portion having a relatively narrow width and a wide portion having a relatively wide width, the first adhesive region and the second adhesive region are arranged so that the boundary portion extends from the narrow portion to the wide portion, and the first adhesive line and the second adhesive line may intersect at the boundary portion so that the narrow portion side is convex.

[0010] According to the above-mentioned configuration, it is possible to peel the coating material from the substrate from the narrow portion side to the wide portion side, which makes peeling easier compared to a configuration in which peeling is performed in the opposite direction.

[0011] The substrate may have a flat portion where the plate surface is flat and a curved portion where the plate surface is curved in a curved direction, the covering material is adhered to a surface of the substrate that is arranged on the inside of the curved portion, and the extension direction of the boundary portion may be set in a direction that intersects with the curved direction.

[0012] According to the above configuration, in the curved portion where stretching is likely to occur in order for the coating material to conform to the substrate, it is possible to set the peeling direction to a direction intersecting the stretching direction, making it easier to peel off the coating material.

[0013] the base material includes a flat portion having a flat plate surface and a curved portion where the plate surface curves in a curved direction, the covering material is adhered to a surface of the base material that is disposed on the inside of the curved portion, the first adhesive region and the second adhesive region are provided on the flat portion, the curved portion has a third adhesive region in which a plurality of third adhesive lines, which are applied in a linear manner with the adhesive, are arranged in a striped pattern, and a fourth adhesive region in which a plurality of fourth adhesive lines, which are applied in a linear manner with the adhesive and intersect with the third adhesive lines, are arranged in a striped pattern, the third adhesive region and the fourth adhesive region are arranged adjacent to each other, and their curved portion side boundary portion extends in a straight line along the boundary portion, the third adhesive line and the fourth adhesive line intersect at the curved portion side boundary portion so as to be convex toward a side where the first adhesive line and the second adhesive line are convex at the boundary portion, and an angle at which the third adhesive line and the fourth adhesive line intersect at the curved portion side boundary portion is smaller than an angle at which the first adhesive line and the second adhesive line intersect at the boundary portion.

[0014] According to the above-mentioned configuration, it is possible to change the adhesive area and adhesive spacing between the curved portion where floating between the substrate and the coating material is likely to occur and the flat portion where floating is relatively unlikely to occur. Also, by making the angle at which the adhesive lines cross at the curved portion smaller than the angle at which the adhesive lines cross at the flat portion, it is possible to make it easier to peel the coating material from the substrate at the curved portion where the adhesive strength is increased.

[0015] The plate-like body with a covering material may be an interior material for a vehicle, the covering material having a surface layer arranged on the interior side of the vehicle cabin and a foam layer arranged between the surface layer and the base material, and the adhesive is impregnated into the foam layer in a striped pattern by a plurality of the first adhesive lines and a plurality of the second adhesive lines, thereby making the surface of the covering material wavy.

[0016] According to the above-mentioned configuration, a wavy design can be expressed on the surface of the vehicle interior material by utilizing the application pattern of the adhesive.

[0017] The technology disclosed in this specification is also a method for peeling a coating material from the above-mentioned coated plate-like body, in which the coating material is peeled off from the substrate along the boundary from the side where the intersection of the first adhesive line and the second adhesive line is convex. Effect of the Invention

[0018] The technology disclosed in this specification can provide a coated plate that allows the coating to be easily peeled off from the substrate, and a method for peeling the coating from the coated plate. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a front view of a door trim according to an embodiment, viewed from the inside of a vehicle interior; [Diagram 2] Front view of ornament board [Diagram 3] Section II of Figure 2 [Figure 4] FIG. 1 is a cross-sectional view showing a state in which the substrate and the skin are placed between a pair of press dies, illustrating a process of attaching the skin to the substrate. [Diagram 5] Cross-sectional view showing the state in which the substrate and the skin are pressed [Figure 6] A cross-sectional view showing a pair of press dies in an open state. [Figure 7] Enlarged cross-sectional view of a part of the door trim after removal from the mold DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] A vehicle door trim 10 as a plate-like body with a covering material according to one embodiment will be described with reference to Fig. 1 to Fig. 7. In the following drawings, the front and rear of the vehicle are indicated by arrows FR and RR, the upper and lower sides of the vehicle are indicated by arrows UP and DW, and the inside of the vehicle compartment (inside the vehicle compartment) and the outside of the vehicle compartment (outside the vehicle compartment) are indicated by arrows IN and OUT.

[0021] As shown in FIG. 1, the door trim 10 of this embodiment is mainly composed of a plate-shaped trim board 11, and in addition to the trim board 11, it is also composed of various functional parts such as an inside handle 12, an armrest 13, a speaker grill 14, and a switch device 15, which are provided on the trim board 11.

[0022] The trim board 11 is made up of a plurality of board members assembled together, and a portion of the trim board 11 is configured by an ornament board 20. The ornament board 20 has a shape that expands in the vertical direction from the front to the rear of the vehicle. Hereinafter, of the ornament board 20, a portion having a relatively narrow board width at the front of the vehicle will be referred to as a narrow width portion 21, and a portion having a relatively wide board width at the rear of the narrow width portion 21 will be referred to as a wide width portion 22 (see FIG. 2).

[0023] The narrow width portion 21 is connected to the lower side of the upper board 16 that constitutes the upper end of the trim board 11 at the front part of the vehicle. A rectangular cutout portion 23 is formed in the approximate center in the front-rear direction of the narrow width portion 21. A part of the inside handle holder is assembled in the cutout portion 23 (see FIG. 1).

[0024] The wide portion 22 expands in the vertical direction rearward of the narrow portion 21, and is connected to the rear of the upper board 16 and to the rear of the armrest board 17 that protrudes toward the inside of the vehicle compartment. An upper portion of the wide portion 22 forms the upper end portion of the trim board 11. In addition, a lower portion of the wide portion 22 located behind the armrest board 17 is curved in an arc-shaped cross section toward the inside of the vehicle compartment (an example of a curvature direction), and forms part of the armrest 13.

[0025] Hereinafter, the narrow portion 21 of the ornament board 20 and the flat upper portion of the wide portion 22 will be referred to as the flat portion 24, and the lower portion of the wide portion 22 that continues from the flat portion 24 and gradually curves toward the inside of the vehicle cabin will be referred to as the curved portion 25.

[0026] The trim board 11 (ornament board 20) includes a plate-shaped base material 26 made of a synthetic resin material such as polypropylene or ABS, and a skin (an example of a covering material) 27 that covers an interior surface 26A of the base material 26 (see FIG. 3). Note that the base material 26 is not limited to a synthetic resin material, and may be, for example, a mixture of a wood-based material (such as bast plant fiber such as kenaf) and a synthetic resin.

[0027] The skin 27 has a two-layer structure as shown in Fig. 3. Specifically, the skin 27 has a laminated structure in which a surface layer 28 made of synthetic resin material such as olefin-based elastomer, polyvinyl chloride, or the like, or genuine leather, and a foam layer (foam layer) 29 made of sponge-like urethane foam containing open cells, or the like, are laminated together. The skin 27 having this laminated structure can be attached to the base material 26 all at once, which can shorten the cycle time when manufacturing the trim board. The skin 27 is attached to the interior surface of the base material 26 via an adhesive 30.

[0028] In this embodiment, the adhesive 30 is made of a thermoplastic resin. Specifically, examples of the thermoplastic resin used for the adhesive 30 include polyolefin resins such as ethylene vinyl acetate copolymer (EVA) and low density polyethylene (LDPE).

[0029] In this embodiment, as shown in Fig. 2, the ornament board 20 is divided into four regions in the vertical direction, and the adhesive 30 is applied in a different manner in each region. Hereinafter, the divided regions of the ornament board will be referred to as the first adhesive region A1, the second adhesive region A2, the third adhesive region A3, and the fourth adhesive region A4, in that order from the top in Fig. 2.

[0030] The first adhesive region A1 and the second adhesive region A2 are defined as two regions obtained by vertically dividing the flat portion 24. Specifically, the first adhesive region A1 is defined as approximately ½ of the upper portion of the narrow portion 21 and an upper portion of the flat portion 24 of the wide portion 22 located above an extension line obtained by extending rearward from the lower end of the first adhesive region A1 in the narrow portion 21. The second adhesive region A2 is defined as approximately ½ of the lower portion of the narrow portion 21 and an area obtained by extending the second adhesive region in the narrow portion 21 generally rearward, that is, a lower portion of the flat portion 24 of the wide portion 22.

[0031] In this way, the first adhesive region A1 and the second adhesive region A2 are disposed adjacent to each other in the up-down direction, and the boundary portion B12 therebetween extends linearly in the front-rear direction from the narrow width portion 21 to the entire wide width portion 22. Note that the term "linear" does not only mean strictly linear, but also includes extending in a nearly linear manner in roughly one direction without meandering.

[0032] In this embodiment, the boundary B12 is set at a position that crosses the above-mentioned cutout 23. In detail, the boundary B12 crosses the center in the up-down direction of the front edge 23A of the cutout 23, and extends rearward from the corner between the rear edge 23B and the lower edge 23C of the cutout 23. In other words, the boundary B12 is slightly offset in the up-down direction in the cutout 23.

[0033] Meanwhile, the third adhesive region A3 and the fourth adhesive region A4 are defined as regions obtained by dividing the curved portion 25 into two generally in the vertical direction (which can also be said to be the interior and exterior direction of the vehicle). A boundary portion B34 between the third adhesive region A3 and the fourth adhesive region A4 extends rearward and slightly downward (toward the vehicle interior) from an intersection M between a boundary portion B23 between the second adhesive region A2 and the third adhesive region A3 and a lower edge portion 20A of the ornament board 20, so that the third adhesive region A3 is a region that is elongated in the front-rear direction and has a triangular shape. The fourth adhesive region A4 is defined as a region located lower than the third adhesive region A3 (toward the vehicle interior).

[0034] In this way, the third adhesive region A3 and the fourth adhesive region A4 are disposed adjacent to each other in the up-down direction (in-and-outside direction of the vehicle), and the boundary portion B34 between them extends linearly in the front-rear direction. Note that the linear shape in this case includes not only a strict linear shape, but also a shape that extends in a nearly linear manner in roughly one direction without meandering.

[0035] The boundary B34 between the third adhesive region A3 and the fourth adhesive region A4 is set to extend in a direction generally parallel to the boundary B12 between the first adhesive region A1 and the second adhesive region A2. In this case, generally parallel includes extending in the same direction as well as being strictly parallel. In this embodiment, the boundary B12 and the boundary B34 both extend in the approximately front-rear direction.

[0036] In the first adhesive region A1, the adhesive 30 is applied in stripes that extend obliquely from the front to the rear and upward, and are arranged at equal intervals. Hereinafter, each linear adhesive 30 applied in the first adhesive region A1 is referred to as a first adhesive line L1, and the extension direction of the first adhesive line L1 is referred to as a first direction.

[0037] In the second adhesive region A2, the adhesive 30 is applied in stripes that extend diagonally from the front to the rear and downward and are arranged at equal intervals. Hereinafter, each linear adhesive 30 applied in the second adhesive region A2 is referred to as a second adhesive line L2, and the extension direction of the second adhesive line L2 is referred to as a second direction.

[0038] One end of each of the first adhesive lines L1 and each of the second adhesive lines L2 is located on the boundary B12 between the first adhesive region A1 and the second adhesive region A2. The distance (pitch) between adjacent first adhesive lines L1 is set to be equal to the distance (pitch) between adjacent second adhesive lines L2.

[0039] At the boundary B12 between the first adhesive region A1 and the second adhesive region A2, a corner (intersection C12) formed between the first adhesive line L1 and the second adhesive line L2 is convex on the front side (narrow width portion 21 side). The angle at which the first adhesive line L1 intersects with the second adhesive line L2 at the boundary B12 is 60 degrees. More specifically, the angle between the first adhesive line L1 and the boundary B12 and the angle between the second adhesive line L2 and the boundary B12 are both 30 degrees.

[0040] In this embodiment, the first adhesive line L1 and the second adhesive line L2 are provided at positions where they intersect with each other on the boundary B12, but the first adhesive line L1 and the second adhesive line L2 may be shifted in the front-rear direction at the boundary B12. In that case, the angle can be considered as the angle between the first direction and the second direction.

[0041] In the third adhesive region A3, the adhesive 30 is applied in a striped pattern of multiple lines that extend along the boundary B23 with the second adhesive region A2 and are arranged at equal intervals. Hereinafter, if each linear adhesive 30 applied to the third adhesive region A3 is referred to as a third adhesive line L3, and the extension direction of the third adhesive line L3 is referred to as a third direction, multiple second adhesive lines L2 cross one third adhesive line L3 located near the boundary B23. Note that the first adhesive line L1 and the third adhesive line L3 both extend rearward and diagonally upward, but not in the same direction.

[0042] In the fourth adhesive region A4, the adhesive 30 is applied in stripes that extend diagonally from the front to the rear and downward (toward the vehicle interior) at equal intervals. Hereinafter, each linear adhesive 30 applied in the fourth adhesive region A4 is referred to as a fourth adhesive line L4, and the extension direction of the fourth adhesive line L4 is referred to as a fourth direction. Note that the second adhesive line L2 and the fourth adhesive line L4 both extend diagonally rearward and downward, but are not in the same direction.

[0043] One end of each of the third adhesive lines L3 and each of the fourth adhesive lines L4 is located on the boundary B34 between the third adhesive region A3 and the fourth adhesive region A4. The distance (pitch) between adjacent third adhesive lines L3 is set to be equal to the distance (pitch) between adjacent fourth adhesive lines L4.

[0044] At a boundary B34 (an example of a curved portion side boundary) between the third adhesive region A3 and the fourth adhesive region A4, a corner (intersection C34) formed between the third adhesive line L3 and the fourth adhesive line L4 is convex on the front side (narrow portion 21 side). At the boundary B34, the angle between the third adhesive line L3 and the fourth adhesive line L4 is 45 degrees. More specifically, the angle between the third adhesive line L3 and the boundary B34 and the angle between the fourth adhesive line L4 and the boundary B34 are both 22.5 degrees.

[0045] In this embodiment, the third adhesive line L3 and the fourth adhesive line L4 are formed at a position where they intersect on the boundary B34, but the third adhesive line L3 and the fourth adhesive line L4 may be shifted in the front-rear direction at the boundary B34. In that case, the angle can be considered as the angle formed by the third direction and the fourth direction.

[0046] In this embodiment, the distance (pitch) between the adjacent third adhesive line L3 and fourth adhesive line L4 is set to be smaller than the distance (pitch) between the adjacent first adhesive line L1 and second adhesive line L2. This is because in the curved portion 25, the skin 27 is more likely to lift off the substrate 26 due to elongation stress than in the flat portion 24, and it is therefore desirable to ensure a relatively large adhesive area.

[0047] Next, a method of attaching the skin 27 to the base material 26 will be described. When attaching the skin 27 to the base material 26, first, the above-mentioned thermoplastic adhesive 30 is applied in a predetermined pattern to each of the areas A1, A2, A3, and A4 of the surface of the base material 26 that is to be placed on the interior side of the vehicle (interior surface 26A). The adhesive 30 can be applied by, for example, screen printing.

[0048] Next, the skin 27 is superimposed on the substrate 26 via the adhesive 30. At this time, the orientation is adjusted so that the foam layer 29 of the skin 27 is disposed on the substrate 26 side (adhesive 30 side). The timing for superimposing the skin 27 on the substrate 26 is when the solvent of the adhesive 30 has not dried and is sufficiently left.

[0049] Next, the superposed base material 26 and skin 27 are pressed with a pair of press dies 40 of a predetermined shape while or after heating (see Figs. 4 and 5). At this time, the clearance between the pair of press dies 40 is set to a dimension that results in a board thickness slightly thinner than the board thickness of the finished trim board 11 (ornament board 20), and the foam layer 29 is held in a state slightly compressed from its natural state. Then, the thermoplastic resin in a molten state due to heating is permeated into the foam layer 29. Since the adhesive 30 is applied in stripes in each of the regions A1, A2, A3, and A4, the adhesive 30 permeates the foam layer 29 in stripes.

[0050] After cooling in this state, the pair of press dies 40 are opened to demold the trim board 11 (ornament board 20) (see Figures 6 and 7). Then, the portions of the foam layer 29 of the skin 27 into which the adhesive 30 has soaked in stripes are held in a crushed state by the hardened adhesive 30. Meanwhile, the portions of the foam layer 29 not soaked in the adhesive 30 are released from the pressed state and expand to their natural state, forming a wavy design surface as shown in Figure 7. In this way, the ornament board 20 with a skin having a wavy design surface is completed.

[0051] Next, a method for peeling the skin 27 from the base material 26 will be described. When peeling the skin 27 from the base material 26, the skin 27 at the front end portion of the trim board 11 (ornament board 20) is peeled off from the base material 26, and the end of the peeled skin 27 is grasped with the fingers and pulled backward along the boundary portion B12.

[0052] At this time, the boundary portion B12 between the first adhesive region A1 and the second adhesive region A2 extends in the front-rear direction with the first adhesive line L1 and the second adhesive line L2 intersecting so as to be convex toward the front, so that the skin 27 can be easily peeled backward along the linear adhesive layer that spreads backward and up-down from the intersecting portion (intersection C12). More specifically, the adhesive 30 is arranged in stripes in the first adhesive region A1 and the second adhesive region A2, so that the adhesive area is smaller than in a configuration in which an adhesive layer is provided over the entire surface, and peeling can be performed along the first adhesive line L1 and the second adhesive line L2 from the intersecting portion C12 of the first adhesive line L1 and the second adhesive line L2, so that the skin 27 can be easily peeled off from the base material 26.

[0053] After skin 27 has been peeled off up to the position of cutout 23, peeling continues along boundary B12 that starts from a corner located at the lower rear of cutout 23 and passes through this corner. By configuring boundary B12 to pass through the corner of cutout 23 in this way, peeling becomes easier.

[0054] Furthermore, the skin 27 that has reached the wide portion 22 and is being peeled off continues to be peeled off rearward along the first adhesive line L1 and the second adhesive line L2 in the flat portion 24. Furthermore, in the curved portion 25, the third adhesive line L3 and the fourth adhesive line L4 extend in the front-rear direction while intersecting with each other to form a convex shape toward the front, so that the skin 27 can be peeled off starting from the intersecting point C34 and spreading rearward and up-down (into and out of the vehicle) along the third adhesive line L3 and the fourth adhesive line L4. In other words, the skin 27 can be easily peeled off from the base material 26 along the adhesive lines in the curved portion 25 as well.

[0055] Furthermore, in the third adhesive region A3 and the fourth adhesive region A4, the pitch between the adhesive lines L3, L4 is smaller than the pitch between the adhesive lines L1, L2 in the first adhesive region A1 and the second adhesive region A2. However, the angle formed by the intersection C34 of the third adhesive line L3 and the fourth adhesive line L4 is smaller than the angle formed by the intersection C12 of the first adhesive line L1 and the second adhesive line L2, i.e., is a relatively acute angle, making it possible to peel the epidermis 27 with a force equivalent to that required for peeling in the first adhesive region A1 and the second adhesive region A2.

[0056] Next, the effects of the present embodiment will be described. The ornament board 20 of this embodiment is formed by bonding the skin 27 to the interior surface 26A of the plate-shaped base material 26 with the adhesive 30, and has a first adhesive region A1 in which a plurality of first adhesive lines L1, which are applied linearly with the adhesive 30, are arranged in a striped pattern, and a second adhesive region A2 in which a plurality of second adhesive lines L2, which are applied linearly with the adhesive 30 and intersect with the first adhesive lines L1, are arranged in a striped pattern, the first adhesive region A1 and the second adhesive region A2 are disposed adjacent to each other, and a boundary portion B12 between them extends linearly, and the angle at which the first adhesive line L1 and the second adhesive line L2 intersect at the boundary portion B12 is 60 degrees.

[0057] According to the above configuration, the base material 26 and the skin 27 are bonded to only a part of the ornament board 20, not the entire surface, so that the bonding area is small, and the skin 27 can be easily peeled off from the base material 26. Moreover, when peeling the skin 27 from the base material 26, the skin 27 can be pulled in a direction along the boundary B12 from the side (front) where the intersection C12 of the first adhesive line L1 and the second adhesive line L2 is convex, whereby the skin 27 can be peeled off along each adhesive line L1, L2 starting from the intersection C12 of the first adhesive line L1 and the second adhesive line L2, and because starting points (intersections C12) are generated one after another, peeling can be easily performed with a relatively small force.

[0058] The substrate 26 has a narrow portion 21 having a relatively narrow width and a wide portion 22 having a relatively wide width, the first adhesive region A1 and the second adhesive region A2 are arranged so that the boundary portion B12 extends from the narrow portion 21 to the wide portion 22, and the first adhesive line L1 and the second adhesive line L2 intersect at the boundary portion B12 so that the narrow portion 21 side is convex.

[0059] According to the above-mentioned configuration, it is possible to peel the skin 27 from the base material 26 from the narrow width portion 21 side toward the wide width portion 22 side, which is easier to peel than a configuration in which peeling is performed in the opposite direction.

[0060] The base material 26 has a flat portion 24 whose plate surface is flat, and a curved portion 25 whose plate surface curves in a curved direction (towards the inside of the vehicle cabin), and the skin 27 is adhered to the surface of the base material 26 that is arranged on the inside of the curved portion 25 (cabin interior surface 26A), and the extension direction of the boundary portion B12 is set in a direction (front-rear direction) that intersects with the curved direction (inside and outside the vehicle cabin).

[0061] According to the above-mentioned configuration, in curved portion 25 where stretching is likely to occur in order to make skin 27 conform to base material 26, it is possible to set the peeling direction to a direction intersecting the stretching direction, making it easier to peel off skin 27.

[0062] The first adhesive region A1 and the second adhesive region A2 are provided on the flat portion 24, and the curved portion 25 has a third adhesive region A3 in which a plurality of third adhesive lines L3, which are linearly applied with the adhesive 30, are arranged in a striped pattern, and a fourth adhesive region A4 in which a plurality of fourth adhesive lines L4, which are linearly applied with the adhesive 30 and intersect with the third adhesive lines L3, are arranged in a striped pattern. The third adhesive region A3 and the fourth adhesive region A4 are disposed adjacent to each other, and a boundary portion B34 between them is a boundary between the first adhesive region A1 and the second adhesive region A4. The third adhesive line L3 and the fourth adhesive line L4 extend in a straight line along the boundary B12 of the area A2, and intersect at the boundary B34 so as to be convex on the side where the first adhesive line L1 and the second adhesive line L2 are convex at the boundary B12, and the angle (45 degrees) at which the third adhesive line L3 and the fourth adhesive line L4 intersect at the boundary B34 is smaller than the angle (90 degrees) at which the first adhesive line L1 and the second adhesive line L2 intersect at the boundary B12.

[0063] According to the above configuration, it is possible to change the adhesive area and adhesive interval between the curved portion 25, where lifting is likely to occur between the substrate 26 and the skin 27, and the flat portion 24, where lifting is relatively unlikely to occur. In addition, by making the intersecting angle of the adhesive lines L3, L4 of the curved portion 25 smaller than the intersecting angle of the adhesive lines L1, L2 of the flat portion 24, it is possible to make it easier to peel the skin 27 from the substrate 26 in the curved portion 25, where the adhesive strength is increased.

[0064] The ornament board 20 of this embodiment has a surface layer 28 on the interior side of the vehicle cabin as a skin 27, and a foam layer 29 arranged between the surface layer 28 and the base material 26, and the adhesive 30 is impregnated into the foam layer 29 in a striped pattern by a plurality of first adhesive lines L1 and a plurality of second adhesive lines L2, thereby making the surface of the skin 27 wavy.

[0065] According to the above configuration, by utilizing the application pattern of the adhesive 30, a wavy design can be expressed on the surface of the ornament board 20 (the trim board 11, the door trim 10).

[0066] In the present embodiment, the skin 27 is peeled off from the ornament board 20 by peeling the skin 27 off from the base material 26 along the boundary B12 from the side (front) where the intersection C12 of the first adhesive line L1 and the second adhesive line L2 is convex.

[0067] <Other embodiments> The technology disclosed in this specification is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments, for example, are also included in the technical scope.

[0068] (1) In the above embodiment, the ornament board 20 is vertically divided into four regions, and a different application pattern of the adhesive 30 is provided in each region, but the number and directions of the divided regions are not limited to those in the above embodiment. It is preferable to divide the regions in multiples of two.

[0069] (2) In the above embodiment, the angle at which the first adhesive line L1 and the second adhesive line L2 intersect at the boundary B12 is set to 60 degrees, but the angle at which the adhesive lines of adjacent adhesive regions intersect is not limited to 60 degrees and is preferably 90 degrees or less, because an angle of 90 degrees or more makes it difficult to peel off the covering material.

[0070] (3) In the above embodiment, the angle at which the third adhesive line L3 and the fourth adhesive line L4 intersect at the curved portion 25 is set to 45 degrees. However, the technical scope also includes a configuration in which the angle at which the adhesive lines of adjacent adhesive regions intersect at the curved portion is set to be equal to the angle at which the adhesive lines of adjacent adhesive regions intersect at the flat portion.

[0071] (4) The adhesive lines of adjacent adhesive regions may intersect at the boundary so that the wider portion is convex. In such a case, the covering material may be peeled off from the wider portion toward the narrower portion.

[0072] (5) A configuration in which the extending direction of the boundary between adjacent adhesive regions is the same as the curvature direction is also included in the technical scope.

[0073] (6) In the above embodiment, the adhesive area is changed by changing the distance (pitch) between adjacent adhesive lines in the flat portion 24 and the curved portion 25. However, the adhesive area may also be changed by changing the thickness of the adhesive lines.

[0074] (7) In the above embodiment, the skin 27 has a two-layer structure consisting of a surface layer 28 and a foam layer 29, and the foam layer 29 is impregnated with adhesive 30 in a striped pattern to give the surface of the skin 27 a wavy design surface. However, a skin that does not have a foam layer may be used to give a flat design surface.

[0075] (8) In the above embodiment, a vehicle door trim 10 (ornament board 20) was used as an example of a plate-like body with a covering material. However, the technology disclosed in this specification is not limited to vehicle door trim, and can be modified and applied to other vehicle interior materials such as pillar garnishes, ceiling materials, deck trims, etc., as well as vehicle interior materials for trains, airplanes, ships, etc., and applications other than vehicle interior materials. [Explanation of symbols]

[0076] 10: door trim (plate-shaped body with covering material, interior material for vehicles), 11: trim board (plate-shaped body with covering material, interior material for vehicles), 20: ornament board (plate-shaped body with covering material, interior material for vehicles), 21: narrow portion, 22: wide portion, 23: notch, 24: flat portion, 25: curved portion, 26: base material, 27: skin (covering material), 28: surface layer, 29: foam layer (foamed layer), 30: adhesive, A1: first adhesive region, A2: second adhesive region, A3: third adhesive region, A4: fourth adhesive region, B12: boundary portion, B34: boundary portion (border portion on curved portion side), C12, C34: intersection portion, L1: first adhesive line, L2: second adhesive line, L3: third adhesive line, L4: fourth adhesive line

Claims

1. A plate-shaped body having a coating material bonded to a surface of a plate-shaped substrate by an adhesive, a first adhesive region in which a plurality of first adhesive lines in which the adhesive is applied linearly are arranged in a striped pattern; a second adhesive region in which a plurality of second adhesive lines are arranged in a striped pattern, the second adhesive lines being linearly applied so as to intersect with the first adhesive lines; The first adhesive region and the second adhesive region are disposed adjacent to each other, and a boundary portion therebetween extends linearly, A plate-like body with a coating material, wherein the angle at which the first adhesive line and the second adhesive line intersect at the boundary portion is 90 degrees or less.

2. The substrate has a narrow portion having a relatively narrow plate width and a wide portion having a relatively wide plate width, the first adhesive region and the second adhesive region are arranged such that the boundary portion extends from the narrow portion to the wide portion, The coated plate-shaped body according to claim 1 , wherein the first adhesive line and the second adhesive line intersect at the boundary portion so as to be convex on the narrow portion side.

3. The base material has a flat portion where the plate surface is flat and a curved portion where the plate surface is curved in a curved direction, the covering material is adhered to a surface of the base material that is disposed on an inner side of the curved portion, 3. The coated plate-shaped body according to claim 1, wherein the boundary portion has an extending direction that intersects with the curvature direction.

4. The base material has a flat portion where the plate surface is flat and a curved portion where the plate surface is curved in a curved direction, the covering material is adhered to a surface of the base material that is disposed on an inner side of the curved portion, the first adhesive region and the second adhesive region are provided on the flat portion, The curved portion is a third adhesive region in which a plurality of third adhesive lines in which the adhesive is applied linearly are arranged in a striped pattern; a fourth adhesive region in which a plurality of fourth adhesive lines are arranged in a striped pattern, the fourth adhesive line being formed by applying the adhesive linearly and intersecting the third adhesive line; The third adhesive region and the fourth adhesive region are disposed adjacent to each other, and a curved portion side boundary portion thereof extends linearly along the boundary portion, the third adhesive line and the fourth adhesive line intersect at the curved portion side boundary portion so as to be convex toward a side where the first adhesive line and the second adhesive line are convex at the boundary portion, 3. The coated plate-like body according to claim 1, wherein an angle at which the third adhesive line and the fourth adhesive line intersect at the boundary portion on the curved portion side is smaller than an angle at which the first adhesive line and the second adhesive line intersect at the boundary portion.

5. The plate-like body with the covering material is an interior material for a vehicle, the covering material has a surface layer disposed on the interior side of the vehicle cabin, and a foam layer disposed between the surface layer and the base material, 3. A plate-like body with a coating material as described in claim 1 or claim 2, wherein the adhesive is impregnated into the foam layer in a striped pattern by a plurality of the first adhesive lines and a plurality of the second adhesive lines, thereby making the surface of the coating material wavy.

6. A method for removing a coating material from a coated plate-like body according to claim 1 or 2, comprising the steps of: A method for peeling a coating material from a coated plate-like body, comprising peeling the coating material from the substrate along the boundary portion from a side where an intersection portion of the first adhesive line and the second adhesive line is convex.

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