JP2010173193A - Woody panel and method for manufacturing the woody panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a woody panel usable as a temporary fence by improving durability and strength compatibly and preventing deterioration caused by rainwater or sunshine and bent destruction or bending caused by a wind load. <P>SOLUTION: In the woody panel, a single-plate laminate material, where single plates are laminated to be parallel in fiber direction, or a plywood, where single plates are laminated to be intersected in fiber direction, is impregnated with a phenol resin, and a resin reinforced part formed by a heat-press process is arranged on a surface layer. In this way, durability and strength are enhanced, so that the woody panel can be used as the temporary fence. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a wood panel that can be used for a temporary enclosure installed around the site in order to isolate the construction site from the outside during the construction period, and a method for manufacturing the wood panel.

  For temporary enclosures such as construction sites, steel panels having a thickness of 1.2 to 1.6 mm, a width of 500 to 540 mm, and a height of 2000 to 4000 mm are used, and wood panels are hardly used.

  Wood panels have many advantages such as effective use of local materials such as cedar and CO2 reduction by substituting steel panels, but problems such as deterioration (durability) due to rainwater and solar radiation, bending fracture and warping due to wind loads. was there. In particular, Japanese cedar, which is strongly required to be used, has been a big problem because it is soft.

  By the way, as a durability treatment of a wood panel, various materials and lamination methods have been proposed and devised for resin impregnation and application to the surface (see, for example, Patent Documents 1 to 6).

JP 2000-229307 A JP 2002-256684 A JP 2002-19026 A Japanese Patent Laid-Open No. 9-327803 Japanese Patent Laid-Open No. 9-60437 JP-A-6-134707

  However, the object is a wooden entrance door or flooring, and no one has been proposed that achieves both improved durability and improved strength.

  The present invention has been made in view of the above, and achieves both improvement in durability and improvement in strength, avoids deterioration due to rainwater and solar radiation, bending breakage and warpage due to wind load, and can be used for temporary enclosures. An object is to provide a wood panel and a method for producing the wood panel.

  In order to solve the above-described problems and achieve the object, the present invention is a single plate laminated material in which single plates are laminated so that fiber directions are parallel or single plates are laminated so that fiber directions intersect each other. A plywood is impregnated with a synthetic resin. As the synthetic resin to be impregnated, for example, a phenol resin is preferable from the viewpoint of handleability and cost, but a resin having a good impregnation property and curability such as a melamine resin, an epoxy resin, and an unsaturated polyester resin can be used. The phenol resin may be water-soluble or oil-soluble.

  Moreover, the present invention is characterized in that, in the above invention, a resin reinforced portion formed by hot pressing is provided on the surface layer.

  In the present invention, the present invention is characterized in that the veneer is a cedar veneer.

  The present invention is characterized in that a synthetic resin is impregnated into a single plate laminated material in which single plates are laminated so that fiber directions are parallel or a plywood in which single plates are laminated so that fiber directions intersect. As the synthetic resin to be impregnated, for example, a phenol resin is preferable from the viewpoint of handleability and cost, but a resin having a good impregnation property and curability such as a melamine resin, an epoxy resin, and an unsaturated polyester resin can be used. The phenol resin may be water-soluble or oil-soluble.

  Moreover, the present invention is characterized in that, in the above-mentioned invention, a single-plate laminated material or a plywood impregnated with a synthetic resin is heated and pressed.

  The wood panel according to the present invention has improved durability and strength by impregnating a single-plate laminate or plywood with a synthetic resin, so that it can be used for temporary enclosures.

FIG. 1 is a view of a temporary enclosure using a wood panel according to an embodiment of the present invention as viewed from the construction site side. FIG. 2 is a view qualitatively showing the performance of the wood panel according to the embodiment of the present invention.

  Hereinafter, embodiments of a wood panel and a method for producing the wood panel according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a view of a temporary enclosure using a wood panel according to an embodiment of the present invention as viewed from the construction site side. The wood panel 1 according to the embodiment of the present invention is used for a temporary enclosure to be installed around the site in order to shut off the construction site and the outside during the construction period, as shown in FIG. The single pipe 2 erected on the site side is used as a panel support material, and is pasted without any gaps. In pasting, in order to eliminate the gap between the wooden panels and stabilize the assembly structure, the side surface of the wooden panel may be subjected to actual rowing.

  The wood panel 1 used for the temporary enclosure installed around the construction site has a large size of 2000 to 4000 mm (many of 3000 mm), so a single plate is laminated so that the fiber directions are parallel. A single plate laminated material (LVL (Laminated Veneer Lumber)) or a plywood laminated with a single plate so that the fiber directions cross each other is used. As the synthetic resin to be impregnated, for example, a phenol resin is preferable from the viewpoint of handleability and cost, but a resin having a good impregnation property and curability such as a melamine resin, an epoxy resin, and an unsaturated polyester resin can be used. The phenol resin may be water-soluble or oil-soluble.

  Veneer laminates and plywood have a uniform moisture content by using dry veneer, and at the same time, disperse defects such as joints, so they have excellent dimensional stability and accuracy. Impregnation and strength are improved by impregnation.

  The thickness of the single plate used here is about 3.2 mm, and the number of laminated single plates in the single plate laminated material or plywood is based on the strength and rigidity against bending of the wood panel 1, weight (20 kg or less is preferable), etc. 7 to 10 sheets, and the thickness of the wood panel 1 is 20 to 30 mm.

  Furthermore, it is preferable to provide a resin reinforced portion (not shown) on the surface layer of the wood panel 1 by heat-pressing a single plate laminated material or a plywood impregnated with a synthetic resin.

  FIG. 2 is a view qualitatively showing the performance of the wood panel according to the embodiment of the present invention. As shown in FIG. 2, the wood panel 1 in which a cedar plywood is impregnated with a phenol resin is improved in durability, strength and rigidity at a low cost, while the cedar plywood impregnated with a phenol resin is heated by pressing (compression ratio: 10-20%), the wood panel 1 provided with a resin reinforced portion on the surface layer is more costly than the wood panel 1 in which a single board laminated material or a plywood is impregnated with a phenol resin, but durability and strength / The rigidity is further improved.

  The wood panel according to the embodiment described above can be used for a temporary enclosure to be installed around a construction site because durability, strength, and rigidity are improved as compared to a single-plate laminated material or plywood (no treatment).

  And if the wood panel which is this Embodiment is used for temporary enclosure, a local material can be used effectively and it can contribute to reduction of CO2. Furthermore, if the veneer is a cedar veneer, it will be a countermeasure against hay fever.

  Moreover, if the wood panel 1 which is this Embodiment is used for temporary enclosure, it will contribute to the image improvement of a city construction site.

1 Wood panel 2 Single pipe

Claims (5)

  A wood panel characterized by impregnating a synthetic resin into a single plate laminated material in which single plates are laminated so that fiber directions are parallel or a plywood in which single plates are laminated so that fiber directions intersect.   2. The woody panel according to claim 1, wherein a resin reinforced portion formed by heat pressing is provided on the surface layer.   The wood panel according to claim 1 or 2, wherein the veneer is a cedar veneer.   A method for producing a wood panel, comprising impregnating synthetic resin into a single-plate laminated material in which single plates are laminated so that fiber directions are parallel or a plywood in which single plates are laminated so that fiber directions intersect.   5. The method for producing a wood panel according to claim 4, wherein a single-plate laminated material or plywood impregnated with a synthetic resin is hot-pressed.

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