JPH068208A - Manufacture of wooden panel - Google Patents

Abstract

PURPOSE:To reduce the production cost of a wooden panel usable as an interior material for vehicles, buildings and the like and as an exterior material for musical instruments, furniture, household electric appliances, and enhance the degree of freedom of a design as the interior or exterior material. CONSTITUTION:About twenty core sheets 3 having an adhesive film 2 held between the respective core sheets are laminated. Further, on both the faces of the laminate thus prepared, a fancy veneer 1 is laminated via the adhesive film 2, and the resultant laminate is inserted between metallic molds of a molding press. While applying heat at 120 to 170 deg.C to the laminate consisting of the fancey veneers 1, adhesive films 2 and core sheets 3, pressure of 50 t or so is gradually applied to the laminate at a rate of 0.4mm/sec or so and, thereafter, the laminate is further pressed for a few minutes. Thus, the fancy veneers 1 and core sheets 3 are curved to a desired shape under heat and pressure and, simultaneously, the fancy veneers 1 and core sheets 3, which are formed into a two-dimensional or a three-dimensional curved face, are bonded together by the melted adhesive films 2, and the shape of the fancy veneers 1 and core sheets 3 is held by the adhesive films.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an automobile wooden panel used as an automobile interior material.

[0002]

2. Description of the Related Art In recent years, wood panels have come to be widely used as interior materials for automobiles in order to give the interior of automobiles a high-grade appearance.

In order to make the surface of the conventional wood panel beautiful, a thin plate called a wood board using a famous wood and a general-purpose wood or a core material such as aluminum are laminated.

[0004]

By the way, the conventional wood panel generally uses a plate-shaped natural wood having a certain thickness, so that it lacks flexibility and has a complicated curved surface shape or a spherical surface. If a molding such as the above is attempted to be formed, cracks and wrinkles will occur in the wood board and the core material. Also, if it is inevitable to form a cubic curved surface, expensive name wood must be cut out from a solid state, resulting in a significant increase in manufacturing cost and a reduction in the degree of freedom in designing as an interior material. It was

The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for manufacturing a wooden panel for an automobile, which has a low manufacturing cost and a high degree of freedom in designing an interior material.

[0006]

According to the present invention, an adhesive film that melts when heated is sandwiched between a plurality of sheet-shaped core materials obtained by slicing natural wood, and the adhesive film is sandwiched and laminated. On one or both sides, a sheet-like luck board made by cutting a thin piece of natural wood into a stack of adhesive films sandwiched between them, and applying pressure gradually while applying heat While keeping the heating and pressurizing condition for the above time, bend the wood plate and core plate into the desired shape of the two-dimensional curved surface or the three-dimensional curved surface, and at the same time, form the two-dimensional curved surface or the three-dimensional curved surface. The plates are adhered by a melted adhesive film, and the shapes of the wood board and the core plate are held by the adhesive film.

[0007]

According to the present invention, it becomes possible to easily form a three-dimensional curved surface of a wooden panel, which has been conventionally difficult due to cracks or wrinkles, and a method of cutting a solid material out of the manufacturing cost. The degree of freedom can be significantly reduced, and the degree of freedom in design can be dramatically improved.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIGS. 1 and 2 show the structure of an embodiment of the present invention. Reference numeral 1 is a sheet-like wood board made by cutting natural name wood into a thickness of about 0.2 mm, and 2 is an adhesive that melts when heated. Film 3 is a sheet-shaped core plate made by cutting natural wood into a thickness of about 0.2 mm.

In this embodiment having such a structure, the adhesive film 2 is sandwiched between about 20 core plates 3 to be laminated, and then the wood board 1 is adhered to both sides of the laminated core plate 3. The film 2 is laminated as shown in FIG. 1 and inserted between the molds of the molding press. And the board 1 and the adhesive film 2
While heating the laminated body of the core plate 3 and 120 to 170 ° C.,
When a pressure of about t was gradually applied at a rate of about 0.4 mm / sec and pressing was continued for a few more minutes with the molds fitted together, the wood board 1 and core board 3 were affected by heat and pressure. ,
At the same time as being bent into a desired shape, it is adhered by the melted adhesive film 2 and the shape of the panel 4 having a two-dimensional curved surface or a three-dimensional curved surface is held by the adhesive film 2 (see FIG. 2).

By the way, since the laminated body of the wood board 1 and the core board 3 is constructed as a laminated material in which thin wood pieces are overlapped with each other, when deformed at the time of molding, rubbing is caused between the layers, It has excellent characteristics not seen in a single-layer wood, that is, the followability to deformation is remarkably improved, and cracks or wrinkles that occur during molding of a three-dimensional curved surface or the like can be reduced.

Further, when the luck plate 1 and the core plate 3 are deformed to such a degree that they cannot be followed even with the above-mentioned characteristics and cracks occur in the luck plate 1, the melt of the adhesive film 2 is Since it is impregnated in the cracks and hardens in the state of filling the cracks, it becomes integral with the wood board 1. Therefore, if the color of the adhesive film 2 sandwiched between at least the skive plate 1 and the core plate 3 is set to a color close to the color of the surface of the skive plate 1, the adhesive impregnated between the skive plate 1 and the skive plate 1 is bonded. Integrated with film 2,
Even if the skid plate 1 is visually inspected, no crack is detected.

Further, when wrinkles are generated on the skid plate 1, at the same time that the wrinkle's convex portion is pressed by the mold of the molding press, the melt of the adhesive film 2 flows into the wrinkle's concave portion, Since the hardening is performed in the state where the step is embedded, the wrinkle portion becomes smooth, and the wrinkle is not detected even when the luck plate 1 is viewed.

In this embodiment, the explanation has been given of an example in which the wood board 1 is adhered to both sides of the laminated core plate 3, but the laminated core plate 3
The skid board 1 may be adhered only to the surface side of the.

Further, the wood board 1, the adhesive film 2 and the core board 3
When pressing the stacked ones, if a synthetic resin film is further covered on the surface-side luck plate 1 and pressed,
The protective film layer is formed on the surface of the panel 4 to form the glossy panel 4, and at the same time, the panel 4 is less likely to be damaged even when an object is struck.

[0016]

As described above, according to the present invention,
It becomes possible to easily form a three-dimensional curved surface of a wooden panel, which was previously difficult due to cracking or wrinkling, and the manufacturing cost can be significantly reduced compared to the method of cutting out solid wood, and the design This has the effect of dramatically improving the degree of freedom.

[Brief description of drawings]

FIG. 1 is a diagram showing a laminated state of a wood board, an adhesive film and a core board in the present invention.

FIG. 2 is a perspective view of a three-dimensional curved wooden panel manufactured by the manufacturing method of the present invention.

[Explanation of symbols]

1 ... Lucky board, 2 ... Adhesive film, 3 ... Core board, 4 ...
panel.

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[Procedure amendment]

[Submission date] August 27, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

Title: Method for manufacturing wooden panel

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction content]

[0001]

BACKGROUND OF THE INVENTION The present invention is applicable to automobiles, buildings, etc.
Paneling, it is those musical instruments, furniture, relates to a process for the preparation of household electric appliances such as wood panel made you want to use <br/> as an exterior material.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art In recent years, interiors of automobiles, buildings, musical instruments,
Inside to give a sense of quality to the exterior of furniture, home appliances, etc.
Wood-based panels have come to be widely used as a covering material or an exterior material .

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

By the way, the conventional wood panel generally uses a plate-shaped natural wood having a certain thickness, so that it lacks flexibility and has a complicated curved surface shape or a spherical surface. There is a problem that cracks and wrinkles will occur on the wood board and core material when trying to shape it like
It was Also, if it is absolutely necessary to form a cubic curved surface, expensive name wood must be carved from a solid state, which greatly increases the manufacturing cost and also increases the interior material or exterior material.
There is a problem that the degree of freedom in designing as a material decreases.

[Procedure correction 6]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

The present invention has been made in view of the above problems, and cracks and wrinkles do not occur in the wood board and the core during molding.
Not, low manufacturing cost, and an object of the present invention to provide a method of manufacturing the interior material or the degree of freedom is not high tree made by a panel of design as an exterior material.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007]

According to the present invention , cracks and wrinkles are generated on the wood board and the core material.
This makes it possible to easily form a three-dimensional curved surface of a wooden panel without causing any problems, and the manufacturing cost can be significantly reduced compared to the method of cutting solid wood, and the degree of freedom in design is also dramatically improved. You will be able to improve.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

[0016]

As described above, according to the present invention,
The 3D curved surface of a wooden panel can be easily molded without causing cracks or wrinkles on the wood board or core material, and the manufacturing cost can be significantly reduced compared to the method of cutting solid wood. At the same time, the degree of freedom in design can be dramatically improved. Also, of the adhesive film
Formed in order to impregnate the wood and core plates with the melt.
The wooden panels are said to be very hard and transparent
It has properties not found in natural wood,
Gives a feeling of luxury different from the makeup plywood that makes the most of the ground
Has the effect of

Claims (1)

[Claims] 1. An adhesive film that melts when heated is sandwiched between a plurality of thin sheet-shaped cores made of natural wood. The adhesive film is sandwiched and laminated, and one or both surfaces of the laminated body are provided with natural adhesives. A sheet-shaped luck board made by thinly cutting a name tree,
The adhesive film is sandwiched and further laminated, and after gradually applying pressure while applying heat, heating and pressurizing state are maintained for a predetermined time, and the wood plate and the core plate are held. Is bent into a desired shape of a two-dimensional curved surface or a three-dimensional curved surface, and at the same time, the glue plate and the core plate molded into the two-dimensional curved surface or the three-dimensional curved surface are bonded by the adhesive film, A method for manufacturing a wooden panel for an automobile, in which the shape of the core plate is retained.