JP2012148527A - Method for manufacturing bamboo material with outer skin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a product of bamboo, by using a method with high yield and a method adding high value thereto, and to inexpensively provide bamboo laminated lumber with outer skin securing a production volume as an alternative to lumber, regardless of a diameter, thickness, or a shape such as bending, of bamboo.SOLUTION: Since a flattened bamboo material with outer skin is sliced and the sliced bamboo materials are laminate-molded and bonded together, curved members in various shapes are formed according as a shape of a mold as shown in Fig.8. By making a laminate-molded member with the outer skin left, high-value-added craft material or architectural interior material are manufactured without losing original tastes of the bamboo, so as to pay a bamboo lumberer high wages.

Description

  The present invention relates to a method for producing a laminated molded member using a bamboo skin.

  Up to now, there have been flattening techniques as shown in Patent Document 1, laminated molding techniques as shown in Patent Document 2, and the like for processing bamboo as a flat bamboo material.

JP 59-48103 A Japanese Patent Laid-Open No. 8-309711

  The strength and durability of the bamboo material by flattening is a problem, and the bamboo material feeling is not utilized in the bamboo material by lamination molding, and it is not possible to find a clear advantage in terms of cost when compared with other wood. .

  In the present invention, it is intended to expand the use of bamboo materials for interior materials, etc. by producing a laminated molded member with a skin that retains the texture of bamboo and is excellent in strength and dimensional stability. With the goal.

  In order to solve the above-mentioned problems, in the first aspect of the present invention, when flattened bamboo materials are laminated, layers with skins are arranged on both sides of the front and back, and lamination adhesion is performed.

  In the laminated bamboo material with a skin according to the present invention, the bending, thickness, diameter, etc. can be arbitrarily set, so that it can be used as a bamboo material in a wide range. After molding, since high strength and dimensional stability can be provided, efficient production can be achieved.

  Bamboo materials that have been laminated and molded so far have been used as building materials and interior materials. However, the present invention makes it possible to make a material with a high strength by taking advantage of the material feeling of bamboo, and in particular, interior materials. High added value can be expected in such fields.

  In Japan, new fields are expected to be used, but in Western countries, casual Japanese clothing called “Japanese modern” is favored. The widespread use of bamboo around the world will not only help bamboo producers, but will also activate the management of forests and control overgrowth, thus protecting bamboo that contributes to the destruction of the natural environment. Will contribute.

It is a figure of the molded article with a skin after the shaping | molding by FIG. 7 of this invention. It is the figure which divided | segmented the bamboo log of this invention into some. It is the figure which took the node of Drawing 1 of the present invention, and is boiling for draining and draining. It is the figure compressed and flattened with a press, heating with steam by the autoclave of the present invention. It is a figure of the bamboo material with a skin which flattening of the present invention was completed. It is the figure which thinly sliced the flattened bamboo material of this invention. It is the figure which put the bamboo material with the skin of the present invention on the front and back, and sandwiched the bamboo material without a knot with the adhesive applied between them. FIG. 7 is a view in which FIG. 6 of the present invention is sandwiched by a mold and laminated and bonded.

  FIG. 1 shows a laminated laminated member of bamboo material obtained by laminating thinly sliced bamboo materials, with the bamboo skin appearing on the front and back. The dimensions are 65 centimeters in length, 7 centimeters in width, and 1.2 centimeters in thickness, and are used as furniture and building interior materials.

Next, the manufacturing method of this bamboo with a cover will be described.
First, as shown in FIG. 2, a log-like bamboo material is cut at a required length interval. For example, when it is used for furniture, it is cut to about 30 cm, and when it is used for building materials, it is cut with an aim of about 100 cm to 300 cm.

  The log-like bamboo material cut to the required length takes a knot and divides it into 2 to 4 parts, then immerses it in an aqueous solution such as sodium carbonate as shown in FIG. Drain the oil.

  As shown in FIG. 4, the bamboo material that has been drained and drained is pressed with a built-in press while being heated by steam at an internal temperature of 120 to 180 ° C. for 10 to 120 minutes in an autoclave with a built-in press. Flattened as shown in FIG.

  Then, the flattened bamboo is sliced into about 2 to 4 pieces in the thickness direction as shown in FIG. 6, and then the front and back are planarized to smooth the surface.

  As shown in Fig. 7, the planar processed bamboo material is positioned with the skin facing on both sides and the skin facing outward, and the sliced bamboo material without the skin is positioned on the inner side. Adhesive is applied to the front and back of a single piece of bamboo that has not been sliced.

  The laminated material obtained by laminating the single bamboo material is put into a mold for molding as shown in FIG. 8 and bonded by pressing for 5 minutes (high frequency hot press) to 4 hours (cold press) with a high frequency press or a cold press. The molded bamboo laminated member shown in FIG. 1 is completed.

  In the present invention, not only the shape of the above-described embodiment but also the angle of bending can be arbitrarily set depending on the mold to be molded, so that it can be widely used particularly for interior members.

Thus, by laminating thin bamboo slices alone, the strength and durability are increased, and it is useful even when used with home and building materials.
In addition, the bamboo laminated member has a bamboo skin on the front and back, so that it can have a texture of bamboo and has excellent interior properties.

Claims (1)

  Bamboo formed on a flat plate is sliced in the thickness direction to form a single bamboo material. The single bamboo material with the inner skin is positioned with the skin facing outward on the front and back surfaces of the laminated member. A method for producing a bamboo with skin, characterized in that a bamboo with a skin is produced by positioning and laminating.