JP2016117164A - Resin panel and composite panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin panel and a composite panel capable of drying the water in an emulsion-based adhesive in a shorter time than usual in use of the inexpensive emulsion-based adhesive.SOLUTION: A resin panel comprises a resin layer having a flat surface and a water-absorbing layer laminated on the surface of the resin layer. Plural recessed grooves are formed on the surface of the water-absorbing layer side of the resin layer, and at least one end of each recessed groove is opened on the side of the resin layer.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a composite panel used as a building material or the like, in particular, a resin panel that can be satisfactorily bonded to a metal or resin flat plate, and a composite panel configured by laminating the resin panel and the flat plate. .

  As a composite panel used for building materials, that is, building materials, industrial materials, vehicle materials, ship materials, aircraft materials, civil engineering materials, etc., a composite panel constructed by laminating resin panels and metal or resin flat plates Exists. Since this type of composite panel is excellent in heat insulation and light weight, it can be suitably used, for example, for wall materials for bathrooms and houses.

  When the resin panel and the metal plate are bonded and laminated, most of the resin panels do not absorb water, and thus an expensive reaction-curing urethane adhesive or epoxy adhesive has to be used. On the other hand, in Patent Document 1, it is possible to use an inexpensive emulsion-based adhesive by laminating paper on the surface of the foamed resin panel to be bonded to the metal plate and absorbing the moisture of the adhesive on the paper. A composite panel is described.

JP 2001-115597 A

  However, in the composite panel described in Patent Document 1, when the foamed resin panel and the metal plate are bonded via the paper that absorbs the moisture of the emulsion adhesive, the emulsion adhesive is dried and cured. In other words, a large number of days are required, and it takes a long time to produce the composite panel.

  Accordingly, an object of the present invention is to provide a resin panel and a composite panel that enable moisture drying of the adhesive in a shorter time when an inexpensive emulsion adhesive is used.

  According to the present invention, the resin layer and the water absorption layer laminated on the surface of the resin layer are provided, and the plurality of concave grooves are formed on the surface of the resin layer on the water absorption layer side. A resin panel is provided in which at least one end of the groove is open on a side surface of the resin layer.

  Since the water-absorbing layer is laminated on the surface of the resin layer, the water-absorbing layer can be used by absorbing moisture of an inexpensive and easy-to-handle emulsion adhesive. In addition, a plurality of grooves are formed on the surface of the resin layer on the water absorption layer side, and at least one end of the plurality of grooves is open on the side surface of the resin layer, so that a flat plate is bonded to the resin panel. In some cases, the moisture of the emulsion adhesive is scattered through the plurality of concave grooves and the open ends of the concave grooves, and the moisture of the adhesive can be dried in a shorter time. As a result, a composite panel can be manufactured in a very short time. Moreover, since the water absorption layer is laminated | stacked on the resin layer, it becomes possible to raise the intensity | strength of a resin panel more.

  The resin layer is preferably a foamed resin layer or a non-foamed resin layer.

  Each of the plurality of grooves is preferably a groove having a V-shaped cross section, a U-shaped cross section, a trapezoidal cross section, or a rectangular cross section.

  It is also preferable that the plurality of concave grooves are linear concave grooves parallel to or inclined with respect to the side surface of the resin layer, or wavy linear concave grooves.

  It is also preferable that the water-absorbing layer is a highly water-absorbing paperboard, for example, a multi-layer paperboard used for corrugated core base paper.

  According to this invention, the composite panel provided further with the resin panel mentioned above and the metal flat plate or resin flat plate adhere | attached on the water absorption layer of this resin panel with the adhesive agent is provided.

  According to the present invention, when a flat plate is bonded to a resin panel, the moisture of the emulsion-based adhesive is scattered through the plurality of concave grooves and the opening ends of the concave grooves, and the moisture of the adhesive is dried in a shorter time. Is possible. As a result, a composite panel can be manufactured in a very short time. Moreover, since the water absorption layer is laminated | stacked on the resin layer, it becomes possible to raise the intensity | strength of a resin panel more.

It is a perspective view showing roughly the composition of the resin panel in one embodiment of the present invention. It is a side view which shows the cross section of each ditch | groove formed in the resin layer of FIG. It is a top view which shows the traveling direction of the several ditch | groove formed in the resin layer of FIG. It is a side view which shows the example of a change aspect of the cross section of each ditch | groove formed in the resin layer of FIG. It is a top view which shows the example of a change aspect of the running direction of the some ditch | groove formed in the resin layer of FIG. It is a perspective view which shows roughly the structure of the composite panel which laminated | stacked the resin panel of FIG. It is a graph which shows the characteristic of the scattering amount (dryness) of the water | moisture content with respect to the elapsed days in the comparative examples 1 and 2 sample and Examples 1-6 sample. It is a graph which shows the characteristic of the scattering amount of the water | moisture content with respect to the elapsed days in a comparative example 1 sample and an Example 1 sample. It is a graph which shows the characteristic of the scattering amount of the water | moisture content with respect to the elapsed days in a comparative example 1 sample and an Example 2 sample. It is a graph which shows the characteristic of the scattering amount of the water | moisture content with respect to the elapsed days in a comparative example 1 sample and an Example 3 sample. It is a graph which shows the characteristic of the scattering amount of the water | moisture content with respect to the elapsed days in a comparative example 1 sample and an Example 4 sample. It is a graph which shows the characteristic of the scattering amount of the water | moisture content with respect to the elapsed days in a comparative example 1 sample and an Example 5 sample. It is a graph which shows the characteristic of the scattering amount of the water | moisture content with respect to the elapsed days in a comparative example 1 sample and an Example 6 sample.

  FIG. 1 schematically shows a partial configuration of a resin panel 10 according to an embodiment of the present invention, and FIG. 2 shows a cross section of each concave groove 13 formed in the resin layer 11 of the present embodiment. FIG. 3 shows the traveling direction of the plurality of grooves 13 formed in the resin layer 11 of the present embodiment.

  In FIG. 1, 11 indicates a resin layer of the resin panel 10, and 12 indicates a water absorption layer laminated on the surface 11 a of the resin layer 11. A plurality of concave grooves 13 are formed on the surface 11 a of the resin layer 11, and both ends 13 a and 13 b of the concave grooves 13 open to the side surfaces 11 b and 11 c of the resin layer 11, respectively. In addition, the surface 11a of the resin layer 11 is formed flat except for the plurality of concave grooves 13.

  In this embodiment, the resin layer 11 is an in-mold molded product or a continuous extrusion molded product of a foamed polystyrene resin having a foaming ratio of 7.5 times (for example, Kanepal (registered trademark) YD commercially available from Kaneka Corporation), An example dimension is a rectangular flat plate shape having a length of 299 mm, a width of 210 mm, and a thickness of 10 mm. A foamed polyethylene resin or a foamed polypropylene resin may be used in place of the foamed polystyrene resin, but is not limited to these foamed resins. Further, non-foamed resin may be used.

  In this embodiment, the groove 13 formed on the surface of the resin layer 11 is a straight groove having a V-shaped cross section as shown in FIG. 2, and the side surface 11d of the resin layer 11 as shown in FIG. It extends in parallel to. The groove width (opening width) W of each groove 13 is preferably W = 0.05 to 5 mm, but is set to W = 1.8 mm in this embodiment. Further, the pitch P (center distance) between adjacent concave grooves 13 is set to P = 15 mm in the present embodiment. The depth D of each concave groove 13 is preferably D = 0.05 to 5 mm. When the depth D is less than 0.05 mm, the effect of water scattering (drying) cannot be obtained so much, and when the depth D exceeds 5 mm, the bending strength is remarkably lowered.

As a method for forming the plurality of concave grooves 13 on the flat surface 11a of the resin layer 11, for example, (1) in-mold molding method, (2) extrusion molding method, or (3) post-processing method exists. It is not limited to.
(1) In-mold molding method is a method in which a plurality of ridges (convex grooves) for forming concave grooves are provided in a mold, and a plurality of concave grooves are formed at the time of resin molding.
(2) The extrusion molding method is a method in which a plurality of projections for forming concave grooves are provided in the mold of the extrusion port, and a plurality of concave grooves are formed during resin molding.
(3) The post-processing method is such that a plurality of grooves are formed on the surface of the molded resin layer 11 using a groove roll or the like, and the surface of the resin layer 11 formed using a numerical control processing machine or the like is cut into a plurality of surfaces by cutting. A plurality of grooves are formed by partially melting the surface of the resin layer 11 that is formed by using a cutting machine with nichrome wire or by forming grooves.

  The water absorbing layer 12 is a paperboard or other water absorbing material layer made of a paper material having high water absorption. As the paperboard, kraft paper, liner paper, cardboard paper, reprint paper, or core paper is used, but is not limited thereto. In the present embodiment, a multi-layered paperboard used for a corrugated core base paper is used.

  Lamination of the resin layer 11 and the water absorption layer 12 is performed by applying, for example, an emulsion adhesive (for example, vinyl acetate chloride woodworking bond) on the surface 11a of the resin layer 11, pasting the water absorption layer 12, and drying with hot air. The adhesive is fixed by scattering the moisture of the adhesive.

  FIG. 4 shows a modification example of the cross section of each groove formed in the resin layer of FIG. A concave groove 43 having a U-shaped cross section may be provided on the surface of the resin layer 41 as shown in FIG. 5A, and a trapezoidal cross section is provided on the surface of the resin layer 51 as shown in FIG. A concave groove 53 having a rectangular cross section may be provided on the surface of the resin layer 61 as shown in FIG. Of course, the cross-sectional shape of the groove is not limited to this.

  FIG. 5 shows an example of a change in the traveling direction of the plurality of grooves formed in the resin layer in FIG. As shown in FIG. 6A, the groove 73 may be a straight groove 73 extending parallel to the side surface 71b of the resin layer 71, or as shown in FIG. 5B, the side surfaces 81b and 81d of the resin layer 81. It may be a rhombic lattice-shaped linear groove 83 that is inclined with respect to each other and extends so as to intersect with each other, or extends parallel to the side surface 91d of the resin layer 91 as shown in FIG. The wavy groove 93 may be used, or the wavy groove 103 extended in parallel to the side surface 101b of the resin layer 101 may be used as shown in FIG. The traveling direction of the groove is not limited to this.

  FIG. 6 schematically shows a configuration of a composite panel in which flat plates are laminated on the resin panel 10 described above.

  As shown in the figure, the composite panel 14 is formed by laminating the above-described resin panel 10 and a metal or resin flat plate 15. That is, the composite panel 14 is formed by, for example, applying an emulsion adhesive (for example, vinyl acetate chloride woodworking bond) on the water absorbing layer 12 of the resin panel 10 and attaching the flat plate 15. A plurality of concave grooves 13 are formed on the surface of the resin panel 10 on the side where the water absorption layer 12 of the resin layer 11 is laminated, and both ends of the concave grooves 13 are open to the side surfaces of the resin layer 11, respectively. Therefore, the moisture of the adhesive is scattered to the outside through the plurality of concave grooves 13 and the openings on both sides thereof, and the moisture of the adhesive can be dried in a very short time. As a result, the composite panel 14 can be manufactured in a shorter time. Moreover, since the water absorption layer 12 is laminated | stacked on the resin layer 11, it becomes possible to raise the intensity | strength of the resin panel 10 more.

  In the case of a metal flat plate, for example, a steel plate, an aluminum plate, a stainless steel plate, a galvanium plate, or a copper plate is used as the flat plate 15, but is not limited thereto. In the case of a resin flat plate, for example, a high impact polystyrene (HIPS) plate, an acrylonitrile / butadiene / styrene copolymer (ABS) plate, a polypropylene (PP) plate, a polyethylene (PE) plate, a polystyrene (PS) plate or Although a polyethylene terephthalate (PET) board is used, it is not limited to this.

  As described above, according to the present embodiment, the water absorption layer 12 is laminated on the surface 11a of the resin layer 11, and the water absorption layer 12 absorbs moisture of an inexpensive and easy-to-handle emulsion adhesive. Can be used. In addition, a plurality of concave grooves 13 are formed on the surface 11 a of the resin layer 11 on the water absorption layer 12 side, and at least one end of the plurality of concave grooves 13 is open to the side surface of the resin layer 11. When the flat plate 15 is bonded to the resin panel 10, the moisture of the emulsion-based adhesive is scattered through the plurality of concave grooves 13 and the openings 13a of the concave grooves 13, and the moisture drying of the adhesive can be performed in a shorter time. It becomes possible. As a result, the composite panel 15 can be manufactured in a shorter time. Moreover, since the water absorption layer 12 is laminated | stacked on the resin layer 11, it becomes possible to raise the intensity | strength of the resin panel 10 more.

  Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples. However, the present invention is not limited to these examples.

  Adhere a water-absorbing layer to the surface of the foamed resin layer having a plurality of V-shaped cross-sectional grooves with an adhesive, and then apply an adhesive on top of it to apply an acrylic flat plate. The drying time of the adhesive was evaluated by measuring at

In all of the comparative example samples and all the example samples, the foamed resin layer is an in-mold molded product of a foamed polystyrene resin having a foaming ratio of 7.5 times (for example, Kanepal (registered trademark) YD commercially available from Kaneka Corporation). The dimensions were a flat plate shape with a length of 299 mm, a width of 210 mm, and a thickness of 10 mm. The foam acetate vinyl chloride is an emulsion-based adhesive to the surface of the resin layer woodworking bond (55% emulsion, water content 45% mixture) was applied 150 g / ^{m 2} equivalent, water-absorbing layer and made of cardboard 160 g / ^{m 2} The core base paper was pasted and dried with warm air to scatter the moisture of the adhesive and fix it. On the dried resin cardboard core base paper, again apply an equivalent amount of 150 g / m ^{2 of} vinyl acetate woodworking bond (mixed with 55% emulsion and 45% moisture), which is an emulsion adhesive. It was allowed to stand at room temperature of ° C., and the amount of water splashed on the adhesive was measured over time.

  Here, the comparative example 1 sample is a flat sample (blank 1) in which no groove is present on the surface of the foamed resin layer on the water absorbing layer side, and the comparative example 2 sample is also recessed on the surface of the foamed resin layer on the water absorbing layer side. This is a flat sample (blank 2) having no grooves, and the sample of Example 1 is provided with a plurality of linear grooves having a pitch P = 15 mm and a groove width W = 1.8 mm on the surface of the foamed resin layer on the water absorption layer side. Example 2 sample is a sample in which a plurality of linear grooves having a pitch P = 15 mm and a groove width W = 3.0 mm are provided on the surface of the foamed resin layer on the water absorption layer side ( 15 mm / 3.0 mm) and the sample of Example 3 is a sample (30 mm / 1) in which a plurality of linear grooves having a pitch P = 30 mm and a groove width W = 1.8 mm are provided on the surface of the foamed resin layer on the water absorption layer side. .8mm) and implemented Sample 4 is a sample (30 mm / 3.0 mm) in which a plurality of linear grooves having a pitch P = 30 mm and a groove width W = 3.0 mm are provided on the surface of the foamed resin layer on the water absorption layer side. This is a sample (70 mm / 3.0 mm) in which a plurality of straight concave grooves having a pitch P = 70 mm and a groove width W = 3.0 mm are provided on the surface of the foamed resin layer on the water absorption layer side. This is a sample (30 mm / 1.8 mm / grid) in which a plurality of linear grooves having a pitch P = 30 mm and a groove width W = 1.8 mm are provided in a rhombus lattice shape on the surface of the water absorption layer.

  The measurement results are shown in Table 1 and FIG. Table 1 shows the scattering amount (%) of moisture in the adhesive for each elapsed day for all samples of the comparative examples and examples. The amount of scattering indicates the degree of dryness, and if the amount of scattering is large, the drying has progressed. FIG. 7 shows the amount of moisture scattering (%) relative to the number of days elapsed for all samples of the comparative example and the example. The horizontal axis represents the number of days elapsed (day), and the vertical axis represents the amount of moisture scattered (%). ing.

  From Table 1 and FIG. 7, it was found that all of the example samples (Examples 1 to 6) provided with the concave grooves had a faster drying speed than the comparative example samples (Comparative Examples 1 and 2) without the concave grooves. .

  FIG. 8 shows the dryness of the comparative example 1 sample (blank 1) and the example 1 sample (15 mm / 1.8 mm) in comparison, and FIG. 9 shows the comparative example 1 sample (blank 1) and the example 2 sample. 10 shows a comparison of the dryness at (15 mm / 3.0 mm), and FIG. 10 shows a comparison of the dryness at the sample of Comparative Example 1 (blank 1) and the sample of Example 3 (30 mm / 1.8 mm). FIG. 11 shows a comparison of the dryness of the comparative example 1 sample (blank 1) and the example 4 sample (30 mm / 3.0 mm), and FIG. 12 shows the comparative example 1 sample (blank 1) and the example. FIG. 13 shows a comparison of the dryness of 5 samples (70 mm / 3.0 mm). FIG. 13 shows a sample of Comparative Example 1 (blank 1) and Example 6 sample (30 mm / 1.8 mm). It is shown by comparing the dryness in the lattice).

  From these figures, it was found that with respect to the pitch P of the plurality of straight grooves, the P = 30 mm sample had a faster drying rate than the P = 70 mm sample, and the P = 15 mm sample was even faster. Furthermore, it was found that the drying rate was very fast for the sample provided with a plurality of linear grooves in a rhombus lattice. In addition, as for the groove width W of the plurality of linear grooves, it was found that the W = 3.0 mm sample and the W = 1.8 mm sample did not have much difference in drying speed.

  Accordingly, in the corrugated cardboard which is a water absorption layer in which a plurality of linear grooves are provided on the surface of the foamed resin layer at a narrow interval of pitch P = 15 to 30 mm or a plurality of linear grooves are provided in a rhombus lattice shape It was found that if an emulsion adhesive was applied to the core base paper and a flat plate was applied, the moisture of the adhesive was scattered at a faster rate, so that the drying rate could be increased.

  The above-described embodiments and examples are all illustrative and do not limit the present invention, and the present invention can be implemented in various other modifications and changes. Therefore, the scope of the present invention is defined only by the claims and their equivalents.

DESCRIPTION OF SYMBOLS 10 Resin panel 11, 41, 51, 61, 71, 81, 91, 101 Resin layer 11a Surface 11b, 11c, 11d, 71b, 81b, 81d, 91d, 101b Side surface 12 Water absorption layer 13, 43, 53, 63, 73 , 83, 93, 103 Groove 13a, 13b Opening 14 Composite panel 15 Flat plate

Claims (7)

  A resin layer and a water absorption layer laminated on the surface of the resin layer, and a plurality of grooves are formed on the surface of the resin layer on the water absorption layer side. At least one end has an opening on a side surface of the resin layer.   The resin panel according to claim 1, wherein the resin layer is a foamed resin layer or a non-foamed resin layer.   3. The resin panel according to claim 1, wherein each of the plurality of concave grooves is a concave groove having a V-shaped cross section, a U-shaped cross section, a trapezoidal cross section, or a rectangular cross section.   4. The resin panel according to claim 1, wherein the plurality of grooves are linear grooves that are parallel or inclined with respect to the side surface of the resin layer. 5.   The resin panel according to any one of claims 1 to 3, wherein the plurality of concave grooves are wave-shaped concave grooves.   The resin panel according to any one of claims 1 to 5, wherein the water absorption layer is a paperboard having a high water absorption.   A composite comprising: the resin panel according to any one of claims 1 to 6; and a metal flat plate or a resin flat plate bonded to the water absorption layer of the resin panel by an adhesive. panel.

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