JP2600348Y2 - Wood fiberboard - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a structure of a fiberboard used as a board for construction, a building material, a board for furniture and the like.

[0002]

2. Description of the Related Art Conventionally, wood-based board materials used as architectural boards, building materials, furniture boards, etc. are obtained by cutting or cutting plywood, particle board, hard board, MDF, etc. as they are, and various kinds of coating and decorative sheets on the surface. It was used after processing such as sticking.

[0003]

[Problems to be Solved by the Invention] By the way, recently, wood-based boards have been used not only for flat use, but also for giving a three-dimensional effect to the decorative surface by sculpting, etc., to give a sense of quality. Processing is often performed, but when using plywood or particle board, the wood surface of the wood or the unevenness of the chips appears on the cut surface to impair the appearance, and on hard boards and MDF, the color of the wood used as the raw material is And the apparently inconsistency between the painted flat surface and the cut surface or cut surface.

[0004] For this reason, it is necessary to further make up the cut surface and the cut surface, which requires time and labor for processing.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is constituted by laminating and bonding bleached wood fibers or wood fibers dyed in a desired color. The present invention relates to a wood-based fiberboard which is formed into a uniform color with a uniform color throughout .

[0006]

In the present invention, the use of bleached or dyed wood fibers as the raw material for the wood fiberboard is intended to make the colors of the front and back surfaces of the fiberboard, the wood opening, the cut portion, etc., substantially the same. is there.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view of a wood fiber board according to an embodiment of the present invention.

The wood fibers used in this invention are pine,
Japanese conifers such as cedar, hinoki and hemlock, bay fir, spruce, Douglas fir, red cedar, hemlock,
Conifers from North America such as Sequoia, conifers from the North Sea such as Edmatsu, Todomatsu and Siberian larch; hardwoods from the South Sea such as Rawan, Meranti and Apitone, Radiatapine, Eucalyptus,
It is a fiber obtained by fibrillating wood such as poplar.

The defibration method may be any of a wet method and a dry method, which are conventionally performed.

The wood fibers are subjected to bleaching and dyeing treatments, and finished to a desired color.

In the case of bleaching wood fibers, those which have been treated by a conventional method such as oxidative bleaching with hydrogen peroxide or reduction bleaching with chlorine gas and uniformly bleached to the inside of the wood fibers are used.

In the case of dyeing wood fibers, dyes such as acid dyes, metal acetate dyes, reactive dyes and the like are used to uniformly boil, impregnate, immerse, etc. to a desired color even inside the fibers by a dyeing method. The dyed one is used.

As shown in FIG. 1, the bleached or dyed wood fiber is used as a raw material for producing a conventional hard board or MDF, and a wood fiber board 1 having a uniform color inside is manufactured. You.

An embodiment of the present invention will be described below.

[0016]

(Example 1) Wood fiber obtained by fibrillating rawan wood by a dry method is immersed in hydrogen peroxide solution for 30 minutes to bleach, and then washed with water to obtain pale yellow-white wood fiber. . Next, the fibers were dried to reduce the water content to 10% or less, and then a urea resin adhesive was added by 10% with respect to the fiber weight by a groove blender, and the mixture was uniformly applied and formed. Next, the forming mat is inserted into a hot press, the hot platen temperature is 160 ° C., and the initial maximum pressure is 25 kg / cm.
^2. Pressing for 8 minutes at a final pressure of 5 kg / cm ² to a thickness of 15
mm MDF1 was obtained.

The obtained MDF 1 was subjected to cutting from the surface to form the recess 2, but was uniform pale yellowish white to the inside.

Example 2 Wood fibers obtained by steaming Douglas fir and fibrillating with a refiner were immersed in a dye solution in which a yellow-brown acid dye was dissolved, and subjected to boiling dyeing. Then, after washing the fibers with water, a sizing agent was added to the fibers. Next, the fibers were formed by a papermaking apparatus and prepressed to reduce the water content of the sheet to about 60%. Subsequently, by their sheet hot pressing, after the first clamping at ^{20Kg / cm 2, 10Kg / cm} 2
At a temperature of 180 ° and a second pressing to obtain a semi-hard board having a thickness of 15 mm.

The semi-hard board had a uniform yellowish brown color from the surface to the inside.

(Example 3) Wood fiber obtained by fibrillating rawan and hiba wood by a dry method is immersed in a hydrogen peroxide solution for 30 minutes to bleach, and then washed with water to obtain a pale yellow-white fiber. did.
Then, the fibers were dyed by injecting a white acid dye in a vacuum and pressure cooker. Thereafter, the fibers were dried to reduce the water content to 10% or less. Next, a 12% urea resin adhesive was added to the dyed fibers using a groove blender based on the weight of the fibers, and the dyed fibers were uniformly applied and formed. Next, the forming mat is inserted into a hot press, and pressed at a hot plate temperature of 160 ° C., an initial maximum pressure of 27 kg / cm ² , and a final pressure of 5 kg / cm ² for 8 minutes to form a M having a thickness of 15 mm.
DF was obtained.

The MDF had a uniform white color from the surface to the inside.

Since the wood-based fiberboard of the present invention has the above-described structure, when it is used as a substrate, not only is it used two-dimensionally, but also the surface of the decorative surface is embossed by a method such as engraving. Even if it is done, it is possible to easily match the color of the painted plane with the wooden surface or the carved part by the same makeup method, so that there is no apparent inconsistency between the plane and the cut surface.

Further, a fiberboard is prepared by dyeing wood fiber in a color such as red or blue which cannot be seen in ordinary wood, and a flat surface having a makeup different from the color of the fiberboard is applied. When a sculpture or the like is applied to the surface, a unique color appears in the concave portion, and a decorative plate rich in design can be obtained.

Further, when a decorative sheet or the like is adhered to a flat surface of a fiberboard as a base material, if the color of the fiberboard is brought close to the color of the decorative sheet in advance, the decorative sheet is affected by the color of the substrate. There is no difference in color and no loss of beauty.

[Brief description of the drawings]

FIG. 1 is a side view of a wood fiberboard according to an embodiment of the present invention.

[Explanation of Signs] 1 Wood fiberboard 2 Cut recess

Claims (3)

(57) [Scope of request for utility model registration] 1. A method of laminating and bonding bleached wood fibers.
And wood-based fiberboard characterized by uniform color throughout the interior . 2. A wood fiberboard characterized in that wood fibers dyed in a desired color are laminated and adhered to each other and formed into a uniform color throughout the interior . 3. A wood fiber board characterized in that, after bleaching, wood fibers dyed in a desired color are laminated and bonded to form a uniform color throughout the interior .