JPH0715933U - Floor board - Google Patents

Abstract

(57) [Summary] [Purpose] While using wood waste, it imparts the strength and water resistance of plywood. [Structure] Wood pieces are laminated so as to have orientation, and a wood fiber layer (2) is provided on the surface of a base material (1) bonded with a thermosetting synthetic resin adhesive, and a backer layer (3) is provided on the back surface. And a decorative layer (5) on the upper surface of the wood fiber layer (2) as required.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to floorboards, and more particularly to the construction of substrates.

[0002]

[Prior art]

 As a base material for floor boards, plywood made of lauan wood with a thickness of about 5 to 12 mm and medium density fiberboard (MDF) obtained from wood waste are used alone, and the surface has a thickness of about 0.3 to 1.2 mm. In general, a floorboard was constructed by attaching a natural wood decorative veneer of the above, and performing actual processing for joining on the peripheral edge of the base material.

[0003]

[Issues to be solved by the device]

 However, in recent years, plywood has not been able to easily obtain the raw wood of the material due to the restrictions on the logging of South Sea timber to protect the forest, and it is not possible to stably supply the base material.

On the other hand, a floorboard base material composed of a single MDF that is made into a fiber by using waste wood material and solidified with an adhesive has fibers exposed at the mouth of a wooden piece that has been actually processed for joining. There is a problem that water easily penetrates and partially expands or warps the entire substrate. Further, since the above-mentioned actually processed portion for joining is composed only of fibers, there is a problem in that it is weak in strength and lacks reliability as compared with plywood.

[0005]

[Means for Solving the Problems]

 This invention was devised to solve the above-mentioned problems, and has a wood fiberboard layer on the surface of a base material in which wood chips are laminated so as to have orientation and bonded with a thermosetting synthetic resin adhesive, It is characterized by having a backer layer on the back side and optionally a decorative layer on the upper surface of the wood fiberboard layer.

[0006]

[Action]

 In the present invention, the floorboard is configured as described above because the unevenness of the surface smoothness and surface hardness of the wood piece molding layer is eliminated by the upper wood fiberboard layer while the conventional wood fiberboard is used as the base material. In order to maintain the strength by forming the actual processed part of the floorboard for joining with a piece of wood molding layer, and to prevent the warp of the floorboard and the penetration of moisture from the backside by the backer layer on the backside of the floorboard. Is.

The present invention will be described below based on embodiments.

[0008]

【Example】

 FIG. 1 is a sectional view of a floorboard of the present invention, 1 is a substrate, 2 is a wood fiberboard layer, 3 is a backer layer, 4 is a water repellent layer, 5 is a decorative layer, and 6 is a fruit for bonding.

The base material 1 is a stack of wood pieces having a certain thickness and orientation. The space between the pieces of wood is molded as a plate material (OSB) with a thickness of 9 mm by a thermosetting synthetic resin adhesive. As the thermosetting synthetic resin adhesive, urea resin, phenol resin, melamine resin and urea / melamine co-condensation resin are generally used. In the examples, the urea / melamine co-condensation resin adhesive is used in consideration of water resistance. I'm using it.

A wood fiberboard layer 2 is formed on the upper surface of the base material 1. As the wood fiberboard layer 2, a medium density fiberboard (MDF) is generally used. The types are classified according to the type of adhesive used. There are urea resin, phenol resin, melamine resin, and urea-melamine co-condensed resin types. In the examples, the thickness is 3 mm in consideration of water resistance. The medium density fiberboard bonded with the urea-melamine co-condensation resin of was used.

A backer layer 3 is formed on the lower surface of the base material 1. Examples of the backer layer 3 include wood veneer, melamine resin-impregnated paper, diallyl phthalate resin-impregnated paper, and non-woven fabric. In the embodiment, a wood veneer having a thickness of 1.0 mm is attached to form a backer layer.

A water repellent treatment was applied to the surface (exposed surface) of the backer layer 3. In the examples, silicone wax was used as the water repellent, and spray coating was performed.

A decorative layer 5 was applied to the surface of the wood fiber layer 2. The decorative layer 5 has a thickness of 0.3 to 1. 2 mm natural wood decorative veneer, 0.5-1.0 mm thick vinyl chloride resin sheet, 0.05-0.5 mm printed decorative paper, etc. are generally used. In the example, a veneer veneer having a thickness of 0.3 mm was attached.

In order to improve workability, a fruit for bonding was formed on the peripheral portion of the base material 1.

[0015]

[Effect of device]

 According to this invention, by adopting the above-mentioned construction of the floorboard, the unevenness of the surface smoothness and surface hardness in the wood piece molding layer can be eliminated by the wood fiberboard layer on the upper surface, while the conventional wood fiberboard single body is used. The strength can be maintained by forming the actual processed portion for joining in the floor board using the base material as the wood piece molding layer. In addition, since the entire base material is obtained from low-value wood such as waste wood and thinned wood, it is possible to save resources. Since the backer layer is provided on the back surface of the floor board, the warp of the floor board and the penetration of water from the back surface can be prevented, and the strength deterioration of the floor board can be prevented.

[Brief description of drawings]

FIG. 1 is a sectional view of a floorboard according to an embodiment.

[Explanation of symbols]

 1 base material 2 wood fiberboard layer 3 backer layer 4 water repellent layer 5 decorative layer 6 fruit for bonding

Claims (1)

[Scope of utility model registration request] 1. A wood fiberboard layer (2) is provided on the surface of a base material (1) laminated with oriented wood pieces and bonded with a thermosetting synthetic resin adhesive, and a backer layer ( A floorboard having 3), and a decorative layer (5) is applied to the upper surface of the wood fiberboard layer (2) as required.