JPH10337745A - Manufacture of woody composite product and woody composite product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the manufacture of a woody composite product formed of woody resin containing wood meal and provided with the wood quality feeling and another component (base), and save labor thereof. SOLUTION: A base 4 is disposed preliminarily in molds 1 and 2 at the time of molding of woody resin, and the woody resin is filled in the molds 1 and 2 in the above state. Molding is carried out in the state of bringing the woody resin with the base 4 by the arrangement. In the case the woody resin in the molten state is provided with the bonding properties with the base 4, the molded woody resin is in the state of being bonded with the base 4. The molding of the woody resin and bonding the woody resin with the base 4, therefore, are carried out simultaneously to simplify the manufacture of a woody composite product and save the labor thereof. Also in the case the woody resin is not provided with the bonding properties with the base 4, the base 4 is surface treated or a bonding agent is applied preliminarily on the base 4. Thus the woody resin can be bonded with the base 4 at the time of molding by the arrangement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for producing a wood-like composite product comprising a wood-like resin having a texture and color close to that of wood and a member other than the wood-like resin such as a metal, and a method for producing the same. It relates to a wood-like composite product to be manufactured.

[0002]

BACKGROUND ART In recent years, effective use of wood resources has been desired from the viewpoint of forest protection. On the other hand, wood, which is a natural material, is disadvantageous in that it is uneven and easily breaks or warps.Development of a wood reforming technology to improve these disadvantages and make use of the advantages of wood Is desired. The present applicant has already proposed a wood-like product (patent number, 1996-2544310) as a composite material composed of resin and wood to meet these demands.

[0003] Basically, the above wood-like product has a particle (wood flour) of wood (cellulose material) supported on the surface thereof, for example, a particle of titanium oxide having a smaller diameter than the particle. Such a wood flour, a resin, and a coloring material such as a pigment or a dye are mixed to form a mixture of the wood flour, the resin, and the coloring material.
The woody product can effectively utilize wood resources by using wood that has been discarded up to now as wood flour, and has a texture close to that of wood by containing a large amount of wood flour. It is a composite material excellent in moldability similar to resin.

[0004] Further, the above-mentioned wood flour is subjected to a grinding treatment, so that the wood flour has less protruding fibers and has a shape close to a grain or a sphere and has a surface similar to conventional wood flour which protrudes more fibers. Since the particles are covered with the particles of titanium oxide, the dispersibility in the resin is good, and a resin in which wood powder is uniformly dispersed can be obtained. That is, the woody product is a homogeneous material even if it contains a large amount of wood flour. Note that a composite material composed of a mixture of the above-described wood powder carrying the titanium oxide particles, a resin, and a coloring material such as a pigment or a dye is referred to as a woody resin.

Further, in the above-mentioned woody resin, the wood powder is covered with titanium oxide particles, so that the wood powder is protected by the titanium oxide even if the resin is heated during molding of the resin containing the wood powder. It prevents browning and blackening due to scorching, and since the titanium oxide is white, it can produce a color close to white wood. Moreover, since the woody resin has a color close to white, it can be easily colored in various colors.

[0006] In addition, the wood-like resin can form a striped pattern by using colorants such as pigments and dyes of different colors in the molding without completely mixing the same. Can be grained. Also,
The wood-like resin itself is a composite material composed of wood and resin, but can be used in combination with other members such as metal.

For example, if the surface layer of the handrail made of the woody resin is attached to the periphery of the core of the metal handrail, the handrail has high strength as a metal, looks like a woodgrain, and when touched, is made of metal. A handrail having a warm texture different from that of wood can be manufactured. Also, a member made of wood-like resin may be attached to the indoor part of the aluminum sash so that the aluminum member of the aluminum sash may be hidden from the indoor side, or the member exposed to the indoor side of the aluminum sash may be replaced with aluminum material. When a composite sash made of aluminum and wood-like resin is made by using a similar resin, this composite sash has the strength, durability and accuracy as an aluminum sash, and when viewed from the indoor side. Has the same appearance as a wooden frame window.

If such a composite sash is used in a Japanese-style room of a house, interior materials made of plant-based materials such as wood and paper, such as tatami mats, shoji, sliding doors, and floor pillars, have been often used. Discomfort caused by providing a metal sash in the Japanese-style room can be eliminated.

[0009]

By the way, in a product (herein referred to as a wood-like composite product) using the above-mentioned woody resin and another member such as metal (herein referred to as a base material), Then, the base material and the woody resin are separately molded, and these are joined. Therefore, while a product made of a single material can obtain a product only by molding a single material, the wood-like composite product is formed of a base material and a wood-like resin. Molding and joining of these molded articles are necessarily required, and the manufacturing process becomes complicated, which may cause a cost increase.

[0010] By utilizing the prior art search (Patris) of the Japan Patent Information Organization (JAPIO), the technology to solve the above-mentioned problems can be applied to patent applications and utility model registration applications since 1979 using the following search formula. investigated. Search formula: B29C65 / 64 As a result, 224 patents and 135 utility model registrations were extracted. However, a technique for solving the above problem could not be found. The present invention has been made in view of the above circumstances, and a method for manufacturing a wood-like composite product capable of simplifying and saving labor in manufacturing a product comprising the wood-like resin and the base material and reducing cost. It is an object of the present invention to provide a wood-like composite product manufactured by a manufacturing method.

[0011]

The woody product according to the first aspect of the present invention is, for example, as shown in FIGS. 1 to 3, a cellulose-based fine particle having a particle size, a resin, a pigment, A wood-like resin 5 containing a coloring material such as a dye;
Is formed from the base material 4 to be joined, and after the base material 4 is arranged at a predetermined position in the dies 1 and 2 for molding the woody resin 5, the dies 1 and 2 By filling the woody resin 5 into the above, the woody resin 5
Is formed in a state of being bonded to the base material 4 as a means for solving the above problem.

According to the above-described structure, the woody resin 5 containing the cellulose-based fine particles having a particle size, the resin, and the coloring material such as pigment or dye is filled in the molds 1 and 2 and molded. At that time,
Since the base material 4 is disposed in the molds 1 and 2, the base material 4 functions as a part of the molds 1 and 2 or the core, and the woody resin 5
Is formed by the inner surfaces of the molds 1 and 2 and the surface of the substrate 4, and a part of the woody resin 5 is formed along the surface of the substrate 4.

If the molten woody resin 5 has an adhesive property with respect to the substrate 4, for example, the woody resin 5 adheres to the substrate 4 during the above-described molding. Further, for example, when the molten woody resin 5 does not have sufficient adhesiveness to the base material 4 or has no adhesiveness at all, an adhesive or woody material is previously applied to the surface of the base material 4. When applying the wood-like resin 5 by applying an adhesion enhancer or the like that enhances the adhesiveness of the wood-like resin 5 or by processing the surface of the base material 4 so that the wood-like resin 5 is easily bonded, The woody resin 5 can be joined to the base material 4.

Therefore, in the manufacture of the wood-like composite product 3 comprising the wood-like resin 5 and the base material 4, the step of molding the wood-like resin 5 and the step of joining the wood-like resin 5 and the base material 4 are performed simultaneously. Becomes possible. That is, with the above-described configuration, it is possible to simplify the production of the wood-like composite product 3, save labor, and shorten the time, so that the cost of the wood-like composite product 3 can be reduced. In particular, the woody resin 5 is characterized by giving a wood-like appearance to a product using the same, and is often used in a state of being joined to the surface of another member. Can be applied to many products using the woody resin 5.

The above-mentioned cellulosic fine particles are basically wood, but other than wood, plants such as bacas and rice straw may be used as a material. As the wood, any wood may be used.For example, waste wood discarded at sawmills and various woodworking factories and construction sites, as well as plane scraps and sawdust discarded at the above-mentioned factories and the like are used. Well,
In some cases, construction waste may be used. In addition, the type of tree used for wood is not particularly limited, and various types of trees can be used without being limited to conifers and hardwoods.

From the viewpoint of the quality of the woody resin, etc.,
Cellulose-based fine particles can be homogenized in quality by using wood of the same or similar species as a raw material, so waste materials from factories that mainly process the same or similar species of trees can be used. Preferably, it is used.

Further, the cellulose-based fine particles have a particle shape as described above.
When a plant such as wood is crushed and pulverized into fine powder, each fine powder has a fluffy state, whereas, for example, the fine powder is polished by a ball mill or the like to obtain a fluffy fiber. Is cut or pressed against the fine powder so that the fibers are not fluffed.

Further, it is preferable that the average particle diameter of the cellulose-based fine particles is, for example, about 1 μm to 100 μm. Examples of the resin include vinyl chloride resin, foamed vinyl chloride resin, polyethylene resin, polypropylene resin, urethane resin, polyurethane resin, ABS
Resin, AS resin, EVA resin, methacrylic resin, cellulose acetate, polycarbonate, polyamide, polyacetal, polysulfone, polyethylene terephthalate, polybutylene terephthalate, polystyrene resin, modified polyphenylene oxide, and the like can be used.

As the resin, a thermoplastic resin is basically used, but a thermosetting resin such as a phenol resin, a urea resin, a melamine resin, an epoxy resin, a polyester resin, and a diallyl phthalate resin may be used. good. In addition, as the coloring materials such as the pigments and dyes, titanium oxide, lithopone, white carbon, calcium carbonate, iron oxide, cadmium yellow, and carbon black can be used, and various known pigments and dyes can be used. it can. Further, it can be used in a state where a plurality of coloring materials such as pigments and dyes are mixed or not mixed.

The substrate 4 is basically made of a metal such as aluminum, an alloy containing aluminum, iron, an alloy containing iron, but may be made of a material other than a metal. Resin, for example, an extremely hard resin, or ceramic or glass. The wood-like resin 5 is molded by filling the wood-like resin 5 into the molds 1 and 2 and is basically injection-molded. For example, compression molding, transfer molding, and blow molding are used. It may be formed by molding, vacuum molding, slush molding, injection molding, powder molding, or foam molding.

The method for producing a woody composite product according to the second aspect of the present invention is, for example, as shown in FIGS. 4 to 6, a cellulose-based fine particle having a particle size, a resin, a pigment, a dye or the like. Wood-like resin 22 containing the following color materials, and the wood-like resin 2
2 is formed from the base material 21 to be joined,
When extruding the woody resin 22, the base material 21 is arranged so as to be able to be inserted at a predetermined position in the mold 10 for extrusion molding,
The method for solving the above-described problem is to form the wood-like resin 22 in a state of being joined to the base material 21 by extruding the wood-like resin 22 into the mold 10 and inserting the base material 21 into the mold 10. And

According to the above configuration, when extruding the wood-like resin 22, the base material 21 is inserted into the mold 10 together with the wood-like resin 22 to be extruded, so that the wood-like resin 22 is Of the base material 21 and the surface of the base material 21 that is not in contact with the mold 10, and the woody resin 22 is formed along the base material 21.
Further, if the molten wood-like resin 22 has an adhesive property to the base material 21, for example, the wood-like resin 22 is bonded to the base material 21 during the above-described molding. Also,
For example, when the molten wood-like resin 22 does not have sufficient adhesiveness or has no adhesiveness to the base material 21, an adhesive or wood-like resin is previously applied to the surface of the base material 21. When the wood-like resin 22 is molded by applying an adhesion enhancer or the like that enhances the adhesion of the wood-like resin 22 or by processing the surface of the base material 21 so that the wood-like resin 22 is easily bonded. A wood-like resin 22 can be bonded to 21.

Accordingly, in the manufacture of the wood-like composite product 20 comprising the wood-like resin 22 and the base material 21, the wood-like resin 2
It is possible to simultaneously perform the molding step 2 and the joining step between the woody resin 22 and the base material 21. That is, with the above configuration, simplification and labor saving of the manufacture of the wood-like composite product 20 are achieved.
As a result, the cost of the woody composite product 20 can be reduced.

The cellulose fine powder, resin, coloring material and base material are basically the same as the cellulose fine powder, resin, coloring material and base material according to the first aspect. The above-mentioned mold 10 is a die 10 for extrusion molding.
The die 10 has a structure in which a wood-like resin 22 can be pressed into the inside of the die 10 and pushed out.
Can be inserted into the die 10.

According to a third aspect of the present invention, in the method for producing a woody composite product, it is preferable that a hard surface particle having a smaller diameter than the cellulosic fine particles is fixed to an outer peripheral surface of the cellulosic fine particles. This was the solution to the problem. According to the above configuration, the outer surface of the cellulosic fine particles is fixed to the outer surface of the cellulosic fine particles with a smaller diameter and harder than the cellulosic fine particles. By protecting the system-based fine particles from heat, it is possible to prevent the cellulose-based fine particles from burning and discoloring to brown or black.

Further, by covering the periphery of the cellulosic fine particles with the above surface particles, the dispersibility of the cellulosic fine particles can be improved, and the cellulosic fine particles can be uniformly dispersed in the resin. Further, if the surface particles are made of white pigment, the color of the woody resin can be made a color close to white wood.

The surface particles may be those having a smaller diameter and harder than the cellulosic fine particles, and include inorganic particles, pigment particles, conductive particles, resin particles, and the like. Titanium, lithopone, metal particles such as silver, copper, and nickel, conductive metal oxide particles such as tin oxide and zinc oxide, and carbon particles can be used.

According to a fourth aspect of the present invention, in the method for producing a woody composite product, an adhesive is applied in advance to a surface of the base material 21 to which the woody resin 22 is to be bonded. The disposing of the base material 21 coated with the adhesive in the mold 10 is a means for solving the above problem. According to the above configuration, for example, when the melted wood-like resin 22 has no or low adhesion to the base material 21, the base placed in the mold 10 as described above is used. Lumber 2
When the woody resin 22 is molded together with 1, the woody resin 22 molded on the surface of the base material 21 can be reliably and substantially simultaneously adhered to the base material 21 at the same time as the molding. The adhesive is a known adhesive determined on the basis of the type of the material of the base material 21 and the type of the resin contained in the woody resin 22. The adhesive also includes an adhesion enhancer that enhances the adhesiveness of the woody resin 22 in a molten state to the substrate 21.

The woody composite product according to the fifth aspect of the present invention is produced by the method for producing a woody composite product according to any one of the first to fourth aspects. For example, as shown in FIG. The wood-like resin 5 molded on the surface of the base material 4 on at least a part of the surface of the base material 4
Are the means for solving the above problem.

According to the above configuration, the wood-like composite product 3 is
Since it is manufactured by the method for manufacturing a woody composite product according to any one of claims 1 to 4, the woody resin 5 is molded on the surface of the base material 4, and the base material 4 and the woody resin 5 are Thus, the wood-like composite product 3 can be manufactured at low cost as described above. Also, unlike the conventional case of fitting a molded wood-like product to a base material, there is no need to form a fitting portion for fitting the base material and the wood-like product to each other, Since the shapes of the base material and the wood-like product (the portion made of wood-like resin of the wood-like composite product) can be simplified, the manufacturing cost can be reduced.

The woody composite product according to claim 6 of the present invention is formed on at least a part of the surface of the aluminum material serving as the base material 21 on the surface of the aluminum material, as shown in FIG. An aluminum resin composite sash to which the above-mentioned woody resin 22 is joined is a means for solving the above problem. According to the above configuration, the woody resin 22 molded on the surface of the aluminum material 21 is joined to at least a part of the surface of the aluminum material (base material) 21 of the sash. The indoor side is covered with the wood-like resin 22 or the wood-like resin 22
When the sash is viewed from the indoor side, it looks like a window is fitted into the wooden frame, and if this sash is installed in a Japanese-style room, the discomfort of using a metal sash in the Japanese-style room is eliminated In addition to the above, the same operation and effect as the above-described configuration can be obtained.

The wood-like composite product according to claim 7 of the present invention, for example, as shown in FIG. 9, covers the core material (base material) so as to cover substantially the entire surface of the core material serving as the base material 41. The above-mentioned woody resin 42 molded on the surface of 41) is
The present invention has been made to solve the above-mentioned problem by using a handrail which is joined to a handrail. According to the above configuration, the wood-like resin 4 molded on the surface of the core material 41 so that the handrail as the wood-like composite product 42 covers substantially the entire surface of the core material serving as the base material 41.
2 is joined to the core material 41, so that the appearance and texture of the handrail can be made to be close to that of a wood, regardless of the material of the core material 41. At least it does not give a cold feeling like a metal, and the same operation and effect as the configuration according to the fifth aspect can be obtained. When the base material 41 is, for example, a metal such as a steel material, the handrail has the strength as a metal and the moldability as a composite material of a metal and a resin. The appearance, texture and feel of the wood can be made close to those of wood in a state of excellent properties.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first example of a method for producing a woody composite product and a woody composite product according to an embodiment of the present invention will be described below. 1 and 2 show molds 1 and 2 for injection molding for explaining a method of manufacturing a first example of a woody composite product. FIG. 3 shows a method of manufacturing the above woody composite product. 1 shows a wood-like composite product 3 produced by the method described above.
In the first example, the present invention is applied to the manufacture of a door knob (wood-like composite product 3) consisting of a base material 4 made of an aluminum material and a wood-like resin 5.

In the first example of the method for producing a woody composite product, dies 1 and 2 as shown in FIGS. 1 and 2 are used, for example. The molds 1 and 2 schematically show the structure of a mold similar to that of injection molding. The mold 1 is attached to a movable die plate (a mold clamping plate, not shown) in, for example, injection molding.
For example, it can be attached to a fixed die plate (clamping plate, not shown).

The mold 1 has a concave portion 1a for molding a woody resin, and the concave portion 1a has
The base material 4 can be attached to a predetermined position.
That is, the mold 1 is formed with a recess 1a corresponding to the outer surface shape of the wood-like composite product 3 as a door knob together with the mold 2, and the rear end of the base material 4 is attached to and detached from the bottom of the recess 1a. A fitting portion 1b which fits freely is formed, and the base material 4 is positioned at a predetermined position in the concave portion 1a of the mold 1 (the center line of the concave portion 1a substantially coincides with the center line of the base material 4, (The position where the rear end face of the substrate substantially coincides with the base material).

The mold 2 is provided with a recess 2a for molding the wood-like resin 5 and for injecting the wood-like resin 5 into the recesses 1a and 2a of the mold 1 and the mold 2. An injection hole 2b (spool) serving as a passage is formed.
In the mold 1 to which the substrate 4 is attached in this way and the mold 2 used in accordance with the mold 1, the substrate 4
Function as a core, and the woody resin 5 is filled between the inner surfaces of the recesses 1 a and 2 a of the mold 1 and the mold 2 and the surface of the substrate 4.

The woody resin 5 molded by the mold 1 and the mold 2 is basically the same as that described in the conventional example, and the surface of the granular powder of wood (cellulose material) is obtained. In addition, a particle material of, for example, titanium oxide (surface particles) having a smaller diameter than the powder particles is supported, and a mixture of a wood powder supporting titanium oxide, a resin, and a coloring material is provided. The type of wood, the type of resin, and the type of surface particles (for example, titanium oxide) carried on the surface of wood flour can be changed as necessary.

Further, the woody resin 5 may be added with an additive such as a plasticizer as needed. In addition, the amount of the wood powder supporting the titanium oxide in the woody resin 5 is preferably, for example, about 5 to 50% by weight. In addition, the wood-like resin 5 which is a raw material of the wood-like composite product 3 is made of a mixture of wood powder on which titanium oxide is supported, a resin, and a coloring material such as a pigment or a dye. Wood pellets, resin, and coloring materials such as pigments and dyes may be once melted into pellets.

In the manufacture of the wood-like composite product 3, first, the mold 1 is attached to the movable die plate, and the mold 2 is attached to the fixed die plate. Next, the base material 4 is fitted to the mold 1 in a state where the mold 1 and the mold 2 are separated from each other as shown in FIG. The base material 4 is subjected to corona discharge or the like before or after the base material 4 is attached to the mold 1 so that the molten woody resin 5 adheres to the surface with sufficient adhesive strength. Surface treatment may be performed, or an adhesive (including an adhesion enhancer) may be applied to the surface. Next, the mold 1 is matched with the mold 2 by operating the movable die plate.

In this state, the woody resin 5 is injected and filled into the mutually matched mold 1 and mold 2 by an injection mechanism (not shown). Although the injection mechanism is basically a screw type, an injection mechanism other than the screw type such as a plunger type may be used. Next, the mold 1 is separated from the mold 2 by operating the movable die plate after the woody resin 5 is cooled in the molds 1 and 2, and the woody resin is placed on the surface of the substrate 4 from the mold 2. The woody composite product 3 in a state where the resin 5 is molded and joined is removed.

Thus, the molding of the woody resin 5 in the woody composite product 3 is completed. In this state, the woody composite product 3 formed as shown in FIG. 3 has the woody resin 5 bonded to the surface of the base material 4 in this state, and has a woodgrain. Alternatively, other members may be further attached as necessary. Further, a treatment such as polishing the surface of the wood-like composite product 3 may be performed, or the surface may be coated.

In the manufacture of the wood-like composite product 3 comprising the base material 4 and the wood-like resin 5 as described above, the wood-like resin 5 is bonded to the base material 4 at the same time as the wood-like resin 5 is molded. After molding the wood-like resin 5, there is no need to perform the operation of joining the formed wood-like resin 5 to the base material 4, and the production of the wood-like composite product 3 is simplified and labor-saving. 3 can be reduced.

When a woodgrain pattern is applied to the woody resin 5 of the manufactured woody composite product 3, a plurality of different color materials such as pigments and dyes are used, and at least the woodgrain is used. The color material forming the stripe pattern of the tone is formed before it is completely mixed with the other color materials that produce the color of the ground portion of the grain. In this way, a striped pattern appears on the woody resin 5, and the woodgrain pattern can be applied to the molded woody resin 5 without printing the grain on the surface, and the striped pattern can extend to the inside of the resin. Since the shape of the pattern is formed, even if the shaping, cutting, or shaving of the formed woody resin 5 is performed, the grain does not disappear as in the case of processing the wood. Then, grain will appear on the polished surface, the cut surface, the cut surface, and the like.

In order to actually form the above-mentioned grain on the wood-like resin 5 at the time of molding, for example, two or more kinds of compounds or pellets are prepared, and different kinds of compounds or pellets are prepared. Include pigments and dyes of different colors. When these compounds or pellets are supplied to an injection molding machine and molded, when the pigments and dyes that are not completely mixed are injected into the mold through the injection mechanism of the injection molding machine, a stripe pattern is formed. Next formed wood-like resin 5
A woodgrain pattern can be formed on the surface.

Further, the color of the ground portion does not necessarily need to use a coloring material, but is based on the color of the wood flour itself and the color of titanium oxide which is supported on the surface of the wood flour and is also used as a white pigment. The color of the ground portion may be displayed. In this case, a coloring material such as a pigment or a dye is added to the compound or pellets that emit the color of the streaks of the wood grain, in addition to the wood powder on which the titanium oxide is supported, so that the color of the wood grain is reduced. To the compound or pellet that emits the wood powder, wood powder supported by titanium oxide is added, and no coloring material other than titanium oxide carried by the wood powder is added.

Further, it is needless to say that a plurality of pigments or dyes may be mixed and used when the color of the streak portion of the grain or the color of the ground portion is obtained with the coloring material. In addition, when a woodgrain pattern is applied to the woody resin 5 to be molded, a color material that basically gives the color of the grain of the wood and a color material that gives the color of the ground of the wood are not completely mixed. Molding may be performed, and other than the above method, only a pigment or a dye may be separately added at the time of molding.

When the molten woody resin 5 does not sufficiently adhere to the base material 4, an adhesive or the like is applied to the surface of the base material 4 or the surface treatment of the base material 4 is performed. If it is stated that it is necessary, as shown in FIG. 3, the shape is such that the woody resin 5 is fitted to the base material 4 and the woody resin 5 molded from the base material 4 cannot be removed. If the wood-like resin 5 is not bonded to the base material 4, the wood-like resin 5 formed on the surface of the base material 4 can be joined to the base material 4.

In the first example, the wood-like resin 5 is injection-molded. However, if the wood-like resin 5 is filled in a mold and molded, a molding method other than injection molding is used. Any molding method can be used as long as the mold is filled with the woody resin 5 in a state where the base material 4 is arranged at a predetermined position in the mold. Further, the woody resin 5 may be formed so as to cover substantially the entire outer surface (surface) of the base material 4, or a part of the surface of the base material 4 may be brought into contact with the inner surface of the mold. Lumber 4
The structure may be such that the molten wood-like resin 5 does not flow into a part of the surface of the base material 4, so that the wood-like resin 5 may be formed on a part other than a part of the surface of the base material 4.

For example, in the first example, the outer peripheral surface of the rear end of the substrate 4 is in contact with the inner surface of the mold 1 so as not to be covered with the woody resin 5, and By fitting the rear end to the bottom 1b of the concave portion 1a of the mold 1, the wood-like resin 5 is prevented from flowing into the inside of the base material 4, and the wood-like resin 5 Are not formed.

Next, a method of manufacturing a woody composite product and a woody composite product according to a second embodiment of the present invention will be described with reference to FIGS. FIGS. 4 and 5 show a die (a die for extrusion molding) 10 used in the method of manufacturing the second example of the woody composite product, and FIG. 6 shows the second example of the woody composite product 20. It is shown. The woody composite product 20 of the second example is one of the members constituting the aluminum resin composite sash for a window made of an aluminum material and a woody product, and the left and right sides of the window glass frame of the aluminum resin composite sash. It is a frame material to be a side part. Also, in a window aluminum resin composite sash made of an aluminum material and a wood-like product, most of the members straddling the outdoor type and the indoor side of the window have the aluminum material exposed on the outdoor side of the window and the indoor side of the window. The composite material is an aluminum resin product so that the wood-like product is exposed to the outside. Here, the frame material will be described as an example of the wood-like composite product 20.

As shown in FIG. 4 (side sectional view) and FIG. 5 (plan sectional view), an extrusion-shaped die 10 used in a method of manufacturing a woody composite product of the second example is formed by a base as described later. Lumber 2
1 has a through hole 11a for molding through which the extruded resin passes, and has a shape that covers the periphery of the die body 11, and a rear end of the through hole 11a of the die body 11. Peripheral part 12 provided with resin flow path 12a that supplies molten wood-like resin 22 to the part side
And a base material 21 made of aluminum material, which is attached to the tip end side of the die body 11 and is inserted into the through hole 11 a of the die body 11.
, A die plate 14 attached to the rear end face side of the die body 11 and having a slit 14 a having a shape substantially similar to the cross-sectional shape of the wood-like composite product 20 to be manufactured, and a resin inlet 15. It is provided.

Then, in the insertion hole 11 of the die body 11,
The base material 21 can be inserted and the insertion hole 11
The portion excluding the rear end has substantially the same cross-sectional shape as the outer peripheral shape of the cross-section of the substrate 21. In addition, insertion hole 1
The rear end of 1 has a cross-sectional shape obtained by adding the outer peripheral shape of the cross-section of the base material 21 and the cross-sectional shape of the woody resin 22 to be extruded. The cross-sectional shape of the rear end of the insertion hole 11 is substantially the same as the cross-sectional shape of the slit 14 a of the die plate 14.

When the die 10 is connected to an extruder (not shown), the resin inlet 15 or the wood-like resin 22 is press-fitted. The woody resin 22 press-fitted from the resin inlet 15 is applied to the resin flow path 1 in the outer peripheral portion 12.
2a and the resin flow path 11b of the die body 11 connected to the resin flow path 12a, and the insertion hole 11a of the die body 11
Will be pressed into the rear end. Further, in the extruder, a drawer (not shown) is arranged at the tip side of the die 10, and the base material 21 and the molded woody resin 22 move by being pulled by the drawer. ing.

In moving the substrate 21, the die 1
A device for extruding the base material 21 from the rear side of 0 may be provided. Further, when the base material 21 passes through the insertion hole 11a of the die body 11 and the slit 14a of the die plate 14, pressure from the woody resin 22 extruded to the base material 21 is applied. Since a large frictional force is applied between the die body 11 and the die plate 14, a structure in which lubricating oil is injected into a portion where the substrate 21 contacts the die body 11 and the die plate 14 may be employed. In addition, a bearing member that can reduce the friction coefficient of a portion where the die body 11 and the die plate 14 come into contact with the substrate 21 may be provided on the die body 11 and the die plate 14.

In the manufacture of the wood-like composite product, first, the die 10 is set in the extruder, and the base material is inserted from the guide 13 into the insertion hole 11a of the die 10 and the slit 14a of the die plate 14. And In this state, the woody resin 22 is pressed into the die 10 from the resin inlet 15 and the base material 21 is extruded or pulled out in accordance with the amount of the woody resin 22 to be extruded. At the same time, the base material 21 is moved. Thus, the wood-like resin 22 is formed in a state where the wood-like resin 22 is adhered to a part of the surface of the base material 21, and the wood-like composite product 20 including the base material 21 and the wood-like resin 22 is formed.

The base material 21 is formed so that the molten woody resin adheres to the surface with sufficient adhesive strength.
A surface treatment such as corona discharge is applied to a portion where the woody resin 22 adheres to the surface, and an adhesive (including an adhesion enhancer) is used.
May be applied. As a result, FIG.
A wood-like composite product 20 composed of a base material 21 and a wood-like resin 22 shown in FIG. 1 is provided. The second example of the wood-like composite product 20 is a member of a window frame of a window sash.
By joining with a member such as 3, a part of the window sash (aluminum resin composite sash) is formed.

The second example of the wood composite product 20
Since the part facing the indoor side of the window frame is made of the woody resin 22 and the part facing the outdoor side is made of the aluminum base material 21, the window frame is made of the wooden frame when viewed from the indoor side. It gives an impression and is suitable for use in Japanese-style rooms and tea rooms. In addition, since the portion facing the outdoor side of the wood composite product 20 is made of the aluminum base material 21, it has sufficient durability and strength. That is, the wood composite product 20 serving as a window sash or the like has both aesthetic appearance, strength, and durability.

As described above, the substrate 21 and the woody resin 22
In the manufacture of the wood-like composite product 20 consisting of: the wood-like resin 22 is molded and the wood-like resin 22 is simultaneously
1 so that after molding the woody resin 22,
There is no need to perform an operation of joining the formed wood-like resin 22 to the base material 21, so that the manufacture of the wood-like composite product 20 can be simplified and labor-saving, and the cost of the wood-like composite product 20 can be reduced. The woody resin 22 is substantially the same as the woody resin 5 of the first example, and can be grained as in the case of the first example.

Next, with reference to FIGS. 7 to 9, a third example of a method for manufacturing a woody composite product and a woody composite product 40 according to the embodiment of the present invention will be described. FIGS. 7 and 8 show a die (die) used in the method for producing a woody composite product of the third example.
FIG. 9 shows a third example of a wood-like composite product 40. The third example of the wood-like composite product 40 includes a tubular metal base material 41 serving as a core of a handrail, and a wood-like resin 42 surrounding the base material 41.

As shown in FIG. 7 (side sectional view) and FIG. 8 (plan sectional view), an extrusion die 30 used in the method of manufacturing the woody composite product of the third example is formed by the following method. Lumber 4
A die body 31 having a molding insertion hole 31a through which the extruded woody resin 42 passes while passing through
An outer peripheral portion 32 having a shape covering the periphery of the die main body 31 and having a resin flow path 32a for supplying the molten woody resin 42 to the rear end side of the insertion hole 31a of the die main body 31; A guide 33 attached to the front end side of the die body 31 to guide the metal base 41 into the insertion hole 31a of the die body 31, and a wood-like composite attached to the rear end face side of the die body 31 and manufactured. Die plate 34 having discharge port 34a having substantially the same cross-sectional shape as product 40
And a resin inlet 35.

The base material 41 can be inserted into the insertion hole 31a of the die body 31, and the portion of the die hole 31a except for the rear end portion is substantially the same as the outer peripheral shape of the cross section of the base material 41. It has a shape. That is, the cross section of the insertion hole 31a is a circle. The rear end of the insertion hole 31a has a cross-sectional shape obtained by adding the outer peripheral shape of the cross-section of the base material 41 and the cross-sectional shape of the woody resin 42 to be extruded. That is, the insertion hole 31a
Has a shape in which the front end side has substantially the same diameter as the base material 41 and the rear end has a larger diameter, and the diameter changes in two stages. The discharge port 44 of the die plate 34
The cross-sectional shape of “a” is substantially the same as the cross-sectional shape of the rear end of the insertion hole 31a.

Further, when the die 30 is connected to an extruder (not shown), the resin inlet 35 or the woody resin 42 is press-fitted. The woody resin 42 press-fitted from the resin inlet 35 is applied to the resin flow path 3 of the outer peripheral portion 32.
Through the resin flow path 2a and the resin flow path 31b of the die main body 31 connected to the resin flow path 32a, the die body 31 is press-fitted into the rear end portion of the insertion hole 31. Further, in the extruder, a drawer (not shown) is arranged on the tip side of the die 30, and by being pulled by the drawer,
The base material 41 and the molded wood resin 42 move integrally.

In the movement of the substrate 41, the die 3
A device for extruding the base material 41 from the rear side of 0 may be provided. Further, when the base material 41 passes through a portion of the die body 31 except for the rear end of the insertion hole 31, a frictional force may be applied between the base material 41, the die body 31, and the die plate 34. Therefore, a structure in which lubricating oil is injected into a portion where the base 21 and the die main body 31 are in contact may be adopted. In addition, a bearing member that can reduce the friction coefficient at the portion where the die body 31 and the base material 21 are in contact with each other may be provided on the die body 31.

In the manufacture of the wood-like composite product 40, first, the die 30 is set in the extruder, and the base material is inserted from the guide 43 into the insertion hole 31a of the die 30 and the discharge port 34a of the die plate 34. State. In this state, the wood-like resin 42 is pressed into the die 30 from the resin inlet 35 and the base material 41 is extruded or pulled out in accordance with the amount of the wood-like resin 42 to be extruded. At the same time, the base material 41 is moved.

Thus, the wood-like resin 42 is extruded in a state where the wood-like resin 42 is adhered to the entire outer surface of the base material 41, and the wood-like composite product 40 including the base material 41 and the wood-like resin 42 is formed. The base material 41 is subjected to a surface treatment such as corona discharge on a portion of the surface of the base material 41 where the woody resin 42 is bonded so that the molten woody resin 42 is bonded with sufficient bonding strength. Alternatively, the adhesive may be applied or an adhesive (including an adhesion enhancer) may be applied.

The wood-like composite product 40 composed of the base material 41 and the wood-like resin 42 shown in FIG. 9 is manufactured by the above processing.
It is a handrail attached to a toilet, a balcony, or the like, and is attached to a predetermined part of a house via a support post or the like. And the woody composite product 40 of this second example gives an impression that the outer surface is made of wood. In addition, the wood composite product 40 has sufficient strength and durability because the metal tubular base material 41 is used as a core material.

That is, the wooden composite product 20 serving as a handrail
Has both beauty and strength and durability. In the manufacture of the wood-like composite product 40 including the base material 41 and the wood-like resin 42 as described above, the wood-like resin 42 is bonded to the base material 41 at the same time as the wood-like resin 42 is molded. After molding the resin 42, there is no need to perform an operation of joining the molded wood-like resin 42 to the base material 41, thereby simplifying and reducing labor for manufacturing the wood-like composite product 40, and manufacturing the wood-like composite product 40. Cost can be reduced.

The woody resin 42 is substantially the same as the woody resin 5 of the first example, and can be grained as in the case of the first example. In the wood-like composite product, the wood-like resin 42 is formed directly on the outer peripheral surface of the base material 41. For example, first, a resin containing no wood powder is formed around the base material 41, and the resin is formed. The wood-like resin 42 may be formed on the outer periphery. In this case, the die has another resin flow path before the resin flow paths 32a and 31b of the die 30 of the third example, and the diameter of the insertion hole 31a of the die body 31 is sequentially increased in three stages. In the second stage, a resin containing no wood flour is press-fitted.
Is press-fitted, a resin layer is formed on the outer periphery of the base material 41, and a layer of the woody resin 42 is further formed on the outer periphery.

The wood-like composite product of the present invention is not limited to the above-described door knob, sash, handrail, etc.
It suffices that the woody resin molded on the surface of the base material 1 is bonded to at least a part of the surface of the base material 1,
It can be used for various building materials such as pergola, wet edge, trellis, balcony and terrace flooring, entrance porch pillars, entrance lattice sliding doors, eaves awnings, curtains, etc. Further, the wood-like composite product of the present invention can be applied to various products such as various daily necessities, furniture, and interior materials such as cars, airplanes and ships.

[0070]

According to the woody product of the first aspect of the present invention, in the manufacture of a woody composite product comprising a woody resin and a base material, the woody resin molding step, the woody resin and the base Since it becomes possible to perform the joining process with the material at the same time,
It is possible to simplify the production of the wood-like composite product, save labor, and reduce the time, and to reduce the cost of the wood-like composite product.

According to the method for producing a wood-like composite product according to the second aspect of the present invention, in the production of a wood-like composite product comprising a wood-like resin and a base material, an extruding step of the wood-like resin, Since the resin and substrate bonding process can be performed simultaneously, it is possible to simplify the production of wood-like composite products, save labor, shorten the time, and reduce the cost of wood-like composite products. Can be achieved.

According to the method for producing a woody composite product according to the third aspect of the present invention, since the outer surface of the cellulosic fine particles is fixed to the outer surface of the cellulosic fine particles, the surface particles having a smaller diameter than the cellulosic fine particles are fixed. In this case, even if heat is applied to the cellulosic fine particles, the surface particles protect the cellulosic fine particles from the heat and can prevent the cellulosic fine particles from burning and discoloring to brown or black.

Further, by covering the periphery of the cellulosic fine particles with the above surface particles, the dispersibility of the cellulosic fine particles can be improved, and the cellulosic fine particles can be uniformly dispersed in the resin. Further, if the surface particles are made of white pigment, the color of the woody resin can be made a color close to white wood.

According to the method for producing a wood-like composite product according to claim 4 of the present invention, for example, when the molten wood-like resin has no or low adhesion to the substrate. However, when the woody resin is molded together with the base material arranged in the mold as described above, the woody resin molded on the surface of the base material can be reliably and almost simultaneously adhered to the base material at the same time as the molding.

According to the wood-like composite product according to claim 5 of the present invention, the wood-like composite product is produced by the method for producing a wood-like composite product according to any one of claims 1 to 4, The wood-like resin is molded on the surface of the base material, and the base material and the wood-like resin are joined, so that a wood-like composite product can be obtained at a low cost as described above. Also, unlike the conventional case of fitting a molded wood-like product to a base material, there is no need to form a fitting portion for fitting the base material and the wood-like product to each other, Since the shapes of the base material and the woody resin can be simplified, the manufacturing cost can be further reduced.

According to the woody composite product of the sixth aspect of the present invention, the woody resin molded on the surface of the aluminum material is joined to at least a part of the surface of the aluminum material of the sash. For example, if the indoor side of the window sash is covered with a woody resin or made of a woody resin, when the sash is viewed from the indoor side, it looks like a window is fitted in a wooden frame. If the sash is installed in the Japanese-style room, the uncomfortable feeling of using the metal sash in the Japanese-style room can be eliminated, and the same operation and effect as the above-described configuration can be obtained.

According to the wood-like composite product of the present invention, the handrail, which is a wood-like composite product, is placed on the surface of the core material so as to cover substantially the entire surface of the core material serving as the base material. Because the woody resin molded in is joined to the core material,
Regardless of the material of the base material, the appearance and texture of the handrail can be made close to wood, and the touch to touch is also close to wood, or at least it does not give a cold touch like metal, Further, the same operation and effect as the configuration according to the fifth aspect can be obtained. When the base material is, for example, a metal such as a steel material, the handrail has the strength as a metal and the moldability as a composite material of a metal and a resin. In a state excellent in formability and formability, the appearance, texture and feel of touch can be made close to wood.

[Brief description of the drawings]

FIG. 1 is a drawing for explaining a method of manufacturing a first example of a woody composite product according to an embodiment of the present invention.

FIG. 2 is a view for explaining a method of manufacturing the woody composite product of the first example.

FIG. 3 is a cross-sectional view showing the woody composite product of the first example.

FIG. 4 is a drawing for explaining a method for producing a woody composite product according to a second embodiment of the present invention.

FIG. 5 is a drawing for explaining a method for producing the woody composite product of the second example.

FIG. 6 is a cross-sectional view showing a woody composite product of the second example.

FIG. 7 is a drawing for explaining a method for producing a woody composite product according to a third embodiment of the present invention.

FIG. 8 is a drawing for explaining a method for producing the woody composite product of the third example.

FIG. 9 is a cross-sectional view showing the woody composite product of the third example.

[Explanation of symbols]

 Reference Signs List 1 mold 2 mold 3 wood-like composite product (door knob) 4 base material 5 wood-like resin 10 die (mold for extrusion molding) 20 wood-like composite product (frame material of glass frame of window sash) 21 base material 22 Wood-like resin 30 Die (mold for extrusion molding) 40 Wood-like composite product (frame material of glass frame of window sash) 41 Base material 42 Wood-like resin

Claims (7)

[Claims] 1. A wood-like resin containing a cellulose-based fine particle having a particle size, a resin, and a coloring material such as a pigment or a dye.
A method for producing a wood-like composite product formed from a base material to which the wood-like resin is bonded, wherein the base material is arranged at a predetermined position in a mold for molding the wood-like resin, A method for producing a wood-like composite product, characterized in that the wood-like resin is filled in the mold to form the wood-like resin in a state of being bonded to the base material. 2. A woody resin containing a cellulose fine powder having a particle size, a resin, and a coloring material such as a pigment or a dye.
A method for producing a wood-like composite product formed from a base material to which the wood-like resin is bonded, wherein the base material is inserted into a predetermined position in an extrusion mold when extruding the wood-like resin. A wood-like composite, wherein the wood-like resin is molded in a state in which the wood-like resin is bonded to the base material by arranging the wood-like resin into the mold while extruding the wood-like resin into the mold. Product manufacturing method. 3. The outer peripheral surface of the cellulose-based fine particles,
The method for producing a wood-like composite product according to claim 1 or 2, wherein hard surface particles having a smaller diameter than the cellulosic fine particles are fixed. 4. An adhesive is applied in advance to a surface of the base material to which the woody resin is to be joined, and when the woody resin is molded,
The method for producing a woody composite product according to any one of claims 1 to 3, wherein the substrate on which the adhesive is applied is arranged in a mold. 5. A wood-like composite product produced by the method for producing a wood-like composite product according to any one of claims 1 to 4, wherein at least a part of the surface of the base material has the base material. A wood-like composite product, wherein the wood-like resin molded on the surface is bonded. 6. An aluminum resin composite sash in which the woody resin molded on the surface of the aluminum material is joined to at least a part of the surface of the aluminum material serving as the base material. A wood-like composite product according to claim 5. 7. A handrail formed by bonding the wood-like resin formed on the surface of the core material to the core material so as to cover substantially the entire surface of the core material serving as the base material. The wood-like composite product according to claim 5, characterized in that: