JP3147568U - Core material for building materials - Google Patents

Abstract

The present invention provides a core material for building materials that can maintain good quality and can be easily constructed.
After a laminated material 11 processed into a plate shape and an MDF 12 are prepared, an adhesive is applied to the MDF 12 using a roll coater device. The MDF 12 to which the adhesive is applied is attached to the front and back surfaces of the laminated material 11. Thereafter, pressurization by a cold press apparatus or pressurization by a hot press apparatus is performed. As described above, the core material 10 for building materials has a configuration in which the MDF 12 is attached to the front and back surfaces of the laminated material 11 processed into a plate shape.
[Selection] Figure 1

Description

  The present invention relates to a core material for building materials, and more particularly to a core material for building materials suitable for lapping with an olefin resin sheet.

Conventionally, a decorative material using an olefin-based resin sheet as a decorative sheet is often used as a building material for interiors such as an apartment house. As a core material of such a building material, MDF (Medium) is provided on the front and back surfaces of an LVL (Laminated Veneer Label) 30 in which a plurality of single plates 31 cut by a cutting machine are laminated (with all the fiber directions aligned). There is a so-called “LVS” (see FIG. 8) on which a Density Fiberboard (medium fiberboard) 12 is attached, a MDF simple substance, and the like. With respect to LVS, the MDF feature that a smooth surface is obtained is added to the LVL feature that is excellent in dimensional stability and accuracy and that a long material can be easily obtained. In addition, the single MDF has features such that warping and twisting are unlikely to occur, easy to process, high durability, homogeneous and inexpensive.
JP 2008-62593 A

  However, with respect to LVS, the temporal change due to moisture absorption or the like is different between MDF 12 and LVL 30, and there is a difference in such temporal change between the single plates 31 constituting LVL 30. The unevenness as shown in FIG. 9 may occur on the surface of the cut surface cut perpendicularly to the fiber direction of the tree. In addition, when the LVS is lapped with a relatively thin sheet such as an olefin resin sheet, the laminated line of the single plates 31 constituting the LVL 30 may be visually recognized from the outside. Thus, when LVS is used as a cosmetic material, a problem from the viewpoint of quality (appearance of a cosmetic surface, etc.) tends to occur. Furthermore, with respect to the LVS, there are cases where gaps between the single plates 31 peculiar to LVL and holes due to missing nodes are generated, so that labor is required for repairing them.

  In addition, since it is difficult for a screw to be effective for a single MDF (for example, MDF breaks), when using a screw, it is necessary to previously prepare a pilot hole 41 in the MDF 12 with an electric drill or the like as shown in FIG. is there. In this way, it takes time to construct.

  Furthermore, in recent years, interest in environmental issues has increased, and there is a need to respond to an increase in demand for building materials in consideration of the natural environment.

  Then, an object of this invention is to provide the core material for building materials which can maintain favorable quality and can make construction easy.

  The first device is a core material for building materials, characterized in that medium fiberboards are adhered to the front and back surfaces of the laminated material processed into a plate shape.

The second device is the first device,
The front and back surfaces of the laminated material and the medium fiberboard are pasted with an aqueous vinyl urethane adhesive.

  The third device is characterized in that an olefin-based resin sheet as a decorative sheet is bonded to the building material core material according to the first or second device.

  According to the first device described above, the core material for building material is constituted by the laminated material and the medium fiberboard (MDF). For this reason, due to the difference in change over time between the components compared to LVL (used to attach a medium-sized fiberboard to the front and back surfaces of a single-plate laminate) that has been used as a core material for building materials. The impact is reduced. Thereby, generation | occurrence | production of the unevenness | corrugation in the wood end surface of a core material is suppressed. In addition, since the laminated material does not have a layer structure, the laminated line is not visually recognized from the outside after the core material is wrapped with a decorative sheet such as an olefin resin sheet. Moreover, about the laminated material, since the space | gap between single plates like LVL or the hole by a missing node does not arise, the repair work for that becomes unnecessary. Furthermore, since the holding power of the laminated material is relatively strong, it is possible to use the screw without making a pilot hole at the time of construction. Furthermore, since laminated timber produced from plantation trees is used, environmental issues are also addressed.

  According to the said 2nd design, the laminated material and the medium quality fiber board are affixed by the adhesive agent which does not discharge | release formaldehyde. For this reason, the core material for building materials which can implement | achieve maintenance of favorable quality and easy construction, without harming a human body is provided.

  According to the third aspect, the decorative sheet that does not generate toxic gas is attached to the surface of the core material for building materials. For this reason, the building material which can implement | achieve maintenance of favorable quality and easy construction, without harming a human body is provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

<1. Structure of core material>
FIG. 1 is a perspective view showing an overall configuration of a core material 10 for building materials according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. As shown in FIGS. 1 and 2, the core material 10 has a configuration in which MDFs 12 are attached to both surfaces (front surface and back surface) of a laminated material 11 processed into a plate shape. The size of the core material 10 in the longitudinal direction × short direction is, for example, 1830 mm × 920 mm, 2130 mm × 1220 mm, or the like. The thickness (height) H1 of the laminated material 11 is, for example, 16 mm. The thickness (height) H2 and H3 of the MDF 12 is, for example, 2.5 mm. The laminated material 11 and the MDF 12 are bonded to each other with an adhesive such as aqueous vinyl urethane. In addition, this core material 10 for building materials is generally used in a state of being wrapped with a decorative sheet such as an olefin resin sheet.

<2. Manufacturing method of core material>
Next, the manufacturing method of the core material 10 according to the present embodiment will be described. FIG. 3 is a flowchart showing the procedure of the manufacturing method of the core material 10 according to the present embodiment. After the laminated material 11 and the MDF 12 processed into a plate shape are prepared, first, a process of applying an adhesive (for example, the above-described aqueous vinyl urethane adhesive) to the MDF 12 is performed (step S10). This process is typically performed using the roll coater device 20. As shown in FIG. 4, the roll coater device 20 includes a coating roll 21, a doctor roll 22, a backup roll 23, and a transport mechanism 24. The MDF 12 is sent between the coating roll 21 and the backup roll 23 by the transport mechanism 24, and the coating liquid 25 is applied to the MDF 12 through the outer peripheral surface of the coating roll 21. After the adhesive is applied to both the MDF 12 for attaching to the front surface of the laminated material 11 and the MDF 12 for attaching to the back surface of the laminated material 11, a process of attaching the MDF 12 to the laminated material 11 one by one is performed. (Step S20). As a result, the core material 10 being manufactured is in a state in which the MDF 12 is adhered to both surfaces of the laminated material 11 with the adhesive 15 as shown in FIG.

  Next, using a cold press apparatus or a hot press apparatus, as shown in FIG. 6, the process which applies a pressure from both surfaces of the core material 10 during manufacture is performed (step S30). In addition, pressurization using a cold press apparatus is performed at normal temperature, and pressurization using a hot press apparatus is performed at comparatively high temperature (for example, 100 degree | times). As described above, the core material 10 for building materials according to the present embodiment is produced.

<3. Effect>
According to this embodiment, the core material 10 for building materials is comprised with the laminated material 11 and MDF12. For this reason, compared with the LVS shown in FIG. Thereby, generation | occurrence | production of the unevenness | corrugation in the wood end surface of the core material 10 is suppressed. Further, the laminated material 11 does not have a layer structure like the LVL 30 (see FIG. 2 for the laminated material 11; see FIG. 8 for the LVL 30). Therefore, the core material 10 is a cosmetic such as an olefin resin sheet. After being wrapped with a sheet, the laminated line is not visually recognized from the outside. Moreover, about the laminated material 11, since the space | gap between single plates like LVL30, or the hole by a missing node does not arise, the repair work for that becomes unnecessary. Furthermore, according to the present embodiment, the MDF 12 is affixed to the laminated material 11. As for the laminated material 11, since the holding force of the screw is stronger than that of the MDF 12, it is possible to use the screw without making a pilot hole at the time of construction. Furthermore, the use of laminated timber has also addressed environmental issues. As mentioned above, according to this embodiment, the core material for building materials which can maintain favorable quality and can make construction easy is implement | achieved.

<4. Modification>
In the said embodiment, although the core material 10 for building materials is not especially processed, this invention is not limited to this. For example, processing such as providing the grooves 13 and 14 in the MDF 12 may be performed so that the cross-sectional view taken along the line AA in FIG. 1 is as shown in FIG.

  Moreover, in the said embodiment, although it has demonstrated that the core material 10 is lapped with an olefin resin sheet as a suitable example, this invention is not limited to this, Other than an olefin resin sheet The core material 10 may be lapped with a decorative sheet.

  Furthermore, in the said embodiment, although it demonstrated that the laminated material 11 and MDF12 adhere | attached with a water-based vinyl urethane type adhesive as a suitable example, this invention is not limited to this, Aqueous vinyl The laminated material 11 and the MDF 12 may be bonded by an adhesive other than urethane.

It is a perspective view which shows the whole structure of the core material for building materials which concerns on one Embodiment of this invention. It is the sectional view on the AA line of FIG. It is a flowchart which shows the procedure of the manufacturing method of the core material which concerns on the said embodiment. In the said embodiment, it is a figure which shows the structure of a roll coater apparatus. In the said embodiment, it is a figure which shows the state by which MDF was affixed on both surfaces of the laminated material with the adhesive agent. In the said embodiment, it is a figure for demonstrating the pressurization to the core material by a cold press apparatus and a hot press apparatus. It is sectional drawing of the core material for building materials which concerns on the modification of the said embodiment. It is a figure which shows the structural example (LVS) of the core material for conventional building materials. In a prior art example, it is a figure for demonstrating that an unevenness | corrugation arises in the end face of a core material. In a prior art example, when using a screw | thread, it is a figure for demonstrating the point which needs to make a pilot hole beforehand in MDF.

Explanation of symbols

10 ... Core material (for building materials) 11 ... Glued wood 12 ... MDF (medium fiberboard)
13, 14 ... Groove 15 ... Adhesive 20 ... Roll coater device 30 ... LVL
31 ... Single plate

Claims (3)

  A core material for building materials, characterized in that medium fiberboards are adhered to the front and back surfaces of the laminated material processed into a plate shape.   The core material for building materials according to claim 1, wherein the front and back surfaces of the laminated material and the medium fiberboard are attached with an aqueous vinyl urethane adhesive.   A building material, wherein an olefin-based resin sheet as a decorative sheet is attached to the building material core material according to claim 1.

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