JPH10113906A - Curved surface moldable composite material by combination of resin-impregnated wood with lining material, and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a composite material to which the bending of wood is applicable freely by a mold, etc., and which can be welded and has a decorative surface of flame resistant natural wood by a process in which wood is impregnated with a flexible synthetic resin under reduced pressure and a lining material is bonded. SOLUTION: For example, a maple plate 1mm in thickness with water content of 15% which was dried artificially is inserted into flexible unsaturated polyester, the pressure is reduced to 20mmHg, and the plate is allowed to stand for 30min and then for about one hour under increased pressure. After that, the resin adherent to the surface of the plate is removed, the plate is mounted on a steel plate 1mm in thickness which is coated with a polyurethane adhesive and cold-pressed to obtain a desired composite material 1. The material l is inserted into a mold for making a cylinder and heated at about 120 deg.C under a pressure of 20kg/cm<2> , and the circular opening part is soldered to complete the desired cylinder. In this way, working is made possible including molding with a mold, etc., punching, and welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backing material which is made by impregnating and injecting a synthetic resin having high flexibility into wood, thereby softening the wood and preventing cracking of the wood when the curved surface is formed. Strength and warmth as a surface material unique to wood can be obtained. When a highly nonflammable steel plate, aluminum plate, stainless steel plate, or the like is used for the backing material, a composite material that is extremely inflammable can be obtained. When a synthetic resin plate or the like is used as the backing material, a composite material having good water resistance can be obtained. In addition, since the wooden part is impregnated with synthetic resin, it is rich in external scratches, abrasion resistance, weather resistance, water resistance,
When the resin impregnation amount is further increased, the resin overflows from the wood at the time of curved surface molding, and the step of performing post-processing is not required. The composite material manufactured by the present invention can be welded depending on the type of backing material. In the case of dyed resin-impregnated wood, or when these are laminated and used in consideration of a color set, various colorful patterns can be obtained by engraving the surface. In the case of performing the curved surface processing and the punching processing, a conventional steel plate or plastic processing technique is applied.

[0002]

2. Description of the Related Art Conventional decorative upholstery made of reinforced wood impregnated with resin is bonded to plywood, and is mainly produced as floorboard material. This is sliced wood to 0.2mm-1.0mm, and impregnated and injected with synthetic resin by pressure reduction method,
A method is used in which an adhesive is applied to a 12 mm plywood and then the adhesive and the resin impregnated in the wood are cured by a hot press. The surface is finished by sanding after the resin is cured and painted with surface paint. The base material is plywood, and bending and punching using a mold are impossible.

[0003] As a wood decorative material to be bent, there is a wood-based decorative material which is sliced into a nonwoven fabric or paper to a thickness of 0.1 mm to 0.5 mm and attached with an adhesive, and is produced for industrial use. In this method, a separately assembled box or tube is stretched using a separate adhesive. This requires well-skilled processing techniques. In addition, when bending is performed in the growth direction of the wood, the grain is broken. After being stretched, it is necessary to sand the wooden surface and paint it.

There is also a method of punching a piece of wood sliced to 0.1 mm to 0.5 mm using a mold, bonding the piece to the base material of the base, and producing a picture, etc. It is difficult to contribute to mass production and is not suitable as a molding material.

[0005]

According to the present invention, not only the plate-grain direction but also the longitudinal direction can be bent freely, and at the same time, the curved surface processing and punching can be freely performed by using a mold or the like.
By changing the backing material of the composite material, welding may be possible and a material that is difficult to burn is obtained.

[0006] Further, by laminating thin plates which have been dyed and impregnated with a resin, shape-formed, and then polished, a multi-colored grain can be obtained.

[0007]

According to the present invention, not only can a curved surface in the growth direction of wood be obtained, but also the wood can be freely bent by a mold or the like, and can be welded and markedly burned. A composite with no natural wood decorative surface can be obtained.
Also, the present invention is a method for producing a composite material with resin-impregnated wood, which can obtain a pictorial pattern by laminating and shaving a dyed thin plate.

The disadvantage of breaking easily when bent in the growth direction of wood is facilitated by impregnating with synthetic resin.

By using a steel plate, stainless steel, or aluminum plate as the backing material, simultaneous molding and punching with a mold or the like can be performed, and further welding can be performed.
In addition, by using a non-combustible material for the backing material, a natural upholstered composite material which is extremely difficult to burn can be obtained.

[0010] When the contact surface of the mold is made a mirror surface to impregnate the wood with a synthetic resin having good fluidity due to heat, a resin layer is formed on the surface of the molded product by hot pressing. A beautiful molded product can be obtained without sanding and post-processing.

When a backing material having good adhesiveness to the resin is used, the resin flows out due to the compression process at the time of molding without applying an adhesive to the backing material, and simultaneous bonding with the backing material is possible. Become.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS By using a steel plate, stainless steel, aluminum plate or the like as a backing material, a metal mold can be freely formed. Further, when a cylindrical shape or a box shape is formed, a joining surface can be welded. It becomes possible. When the product of the present invention is used as a part of an object as a decorative material, it can be welded, so that it can be used as an integral unit without using screws and bolts for joining with the object. If the backing material is a non-combustible material, it will be a remarkably incombustible composite material, and it is used for aircraft, ships, train interiors, etc., public halls, movie theaters, etc. It can be used in kitchens, bathrooms, etc., for household items such as pots and jars, automobiles, furniture, etc., where it requires the warmth of wood grain and wood, and where it requires a lightweight, free bending curve. Can be used.

When a synthetic resin plate is used as a backing material, it is excellent in water resistance by using a method of molding with a conventional synthetic resin and has various water products such as conventional bath units, toilet articles, etc. It can be used in places that require the warmth of wood or wood, or where lightweight and free bending curves are required.

[0014]

EXAMPLES Example 1. After inserting a 1 mm thick maple thin sheet having a water content of 15% by artificial drying into a highly soft, unsaturated polyester, the pressure was reduced to 20 mmHg, and the mixture was allowed to stand for 30 minutes. 1 under pressure of cm ³
Leave to soak for hours. After sufficiently removing the resin adhering to the surface of the thin plate, the urethane-based adhesive was added at 1500 g / m 2.
² Place on a 1mm thick steel plate coated 2kg / cm
C. for 3 hours under the cold pressure condition of 2.

As shown in FIG. 1, this composite material was sandwiched in a mold for forming a cylinder, and was molded under a temperature of 120 ° C. by applying a pressure of 20 kg / cm ² . This cylindrical opening was soldered and welded.

Embodiment 2 FIG. 45m wide cedar grain 2m
sliced to a thickness of m, sealed in a vacuum and pressure device,
It is installed for 2 hours under reduced pressure of Hg. After injecting urethane resin into it and cedar material being fully immersed, pressurize with a pressure pump.
Pressurize to 5 kg / cm ² and immerse for 6 hours. The surface of the cedar wood impregnated with the urethane resin was wiped off so that no residual liquid remained. 1800 g / cm of urethane resin in advance
^{3 was} applied to a 2-mm thick vinyl chloride plate, and the composite was obtained by applying a cold press at 7 kg / cm ² for 30 minutes. This composite material

After the remaining mold was placed in the mold of FIG. 1 and placed in a warm reactor having a humidity of 80% and a temperature of 80 ° C., the urethane resin was cured with moisture to obtain a cylindrical molded product.

Embodiment 3 FIG. Artificial drying, moisture content 1
Put the 0% thin plate of Yonematsu into the vacuum pressurizer
Leave for 20 minutes under reduced pressure of mHg. A thermoplastic acrylic resin that is solid at room temperature is heated to 80 ° C. and melted and injected into the apparatus in a state close to vacuum. When the device is full, the pressurizing device is activated, a pressure of 25 kg / cm ² is applied, and the device is left for 4 hours. The resin-impregnated thin pine pine is removed from the apparatus, cooled to room temperature, and the acrylic resin is cured.

[FIG. 2] A resin-impregnated rice pine, a 1 mm aluminum plate and a resin-impregnated rice pine are sandwiched between the corrugated mold of FIG. 2 and a 50 kg / cm ² hot-press at 100 ° C. for 1 hour. Then, the leaked resin and the aluminum plate are bonded. The hot plate was cooled while being sandwiched by a press until the room condition was reached, and formed. At this time, sharp cutting and punching could be performed by the outer sliding portion of the mold, and finishing work after molding was eliminated.

Embodiment 4 Yonetsuga is lumbered to a thickness of 5mm, only one side is hung with a canna, and one side is made of pine wood with a water content of 1.
It was dried to 8%, sealed in a vacuum pressurizing device, and depressurized at a reduced pressure of 10 mmHg for 2 hours. To this, soft phenol resin is injected into the decompression and pressurization device,
After fully immersed, the pressure was returned to normal pressure and left for 24 hours. After a lapse of time, spray the methanol solution on the material, wash the resin on the surface, and superimpose it on a 2 mm thick steel plate sanded to roughen the surface prepared for the backing material so that no deviation occurs Be careful

FIG. 2 is sandwiched between molds, and subjected to thermal compression at a pressure of 70 kg / cm ² while applying a temperature of 120 ° C. As a result, the resin impregnated in the Yonetsuga flowed out and adhered to the backing material, and at the same time, the resin also caused a curing reaction.

Embodiment 5 FIG. A 0.6 mm thick thin plate of Mizume cherry is immersed in a solution width in which the red and yellow water-soluble basic dyes are dissolved, and left under reduced pressure of 20 mmHg for 30 minutes.
It was left for 3 hours in a pressurized state of kg / cm ² . The removed dyed sheet is dried to a moisture content of 15% in a 50 ° C. heat dryer, and immersed in a methanol-based phenol resin.
Pressure reduction and pressurization were performed in the same manner as described above, and further, the water content was dried to 8% in a 50 ° C. heat dryer. This dyed and resin-impregnated thin plate is placed on a 2 mm thick acetylene sheet in the order of woodgrain, red, and black,

[Fig. 3] Insert between 30kg / c at a temperature of 90 ° C
at a pressure of m ^2, it was embossed. At this time, it was confirmed that the phenol resin flowed out to the surface of the thin plate, adhered to the acetylene sheet, and simultaneously flowed out to the mold side surface. The composite material of the present invention formed into the spectacle frame state was punched into a spectacle size using a punching die. Thereafter, in order to frame the spectacles, grinding was performed with a sander to form a spectacle frame. At this time, a red-yellow layer was formed on the forehead ground by the sander, with a wood color on the surface, and a colorful molded product was obtained.

Embodiment 6 FIG. A thin plate sliced to 0.8 mm by Yonega is sealed in a vacuum pressurizer, and the degree of vacuum is reduced to 20 mm.
After reducing the pressure with Hg for 1 hour, the red, black and yellow oil-based dyes were dissolved in methanol and mixed and dispersed in an epoxy resin, which was separately injected three times. After the rice tsuga is fully immersed, pressurize the pump with 25kg
/ Cm ² was left for 4 hours, and the resin was impregnated simultaneously with the dyeing. An aluminum plate with a pressure of 1 mm was used as a backing material, and an epoxy adhesive was applied to the aluminum plate at 1800 g / m.
³ coated with resin impregnated Yonega, yellow, red,
A black and color combination was performed, and the resultant was overlaid on this aluminum plate, and press-temporarily bonded at room temperature under a pressure of 7 kg / cm ² . This board

[Fig. 2] Inserted into the mold of Fig. 2 and pressure of 150kg at 45kg
/ Cm ² , hot press was performed to obtain a corrugated product. From the grain direction of this corrugated molded product, grinding was performed according to the pattern with a grinder, and vivid butterfly sculpture was performed.

EXAMPLE 7 The oak wood sliced to a thickness of 7.1 mm was put into a decompression and pressurization apparatus, and the pressure was reduced to 20 mmHg by 30.
Then, a soft phenol resin was injected, and the oak material was sufficiently immersed. Then, a pressure of 30 kg / cm ² was applied and the mixture was allowed to stand for 4 hours. The core material was impregnated with the phenolic resin up to the core, and was taken out from the reduced-pressure apparatus. The resin-impregnated thin plate was placed on a stainless plate in which a phenolic resin adhesive was applied in advance, and hot pressing at 110 ° C. was performed for 1 hour to cure the phenolic resin. Combustion experiments were performed on the composite material cooled to room temperature and compared with other similar products. (1) Experimental material A is a floor material obtained by laminating a commercially available 12 mm plywood with a 0.6 mm rice pine. B is a commercially available 0.22 mm birch sheet backed with paper. C is a commercially available 5 mm material. The wall material D, which is a plywood laminated with a 0.27 mm teak thin plate and surface-coated, is a product of the present invention and manufactured in this example. (2) Experimental method

As shown in Fig. 4, the experimental material was placed on the top of a 12 mm diameter candle at a distance of 3 cm from the candle core, and after confirming that the flame of the candle spread sufficiently, the ignition time and the subsequent state were determined. Observed. (3) Experimental results

[Table 1] As shown in the figure, in the product of the present invention D, only the portion hit by the flame was carbonized, but all of the other experimental materials burned, although the time was different.

[0021]

In the above embodiment, the synthetic resin impregnated in the wood is not cured and is bonded to the backing material with an adhesive or by applying heat to the mold without using the adhesive. The molded product was obtained by bonding to the backing material while curing the resin.

The synthetic resin is hardened by impregnating the wood with a thermoplastic synthetic resin and bonding with a backing material and an adhesive by a hot-press, or by laminating without using an adhesive and heating to return to room temperature. After that, a method of simultaneously performing punching and molding using a new mold was invented.

Further, it was confirmed that the degree of ignition of these molded articles was significantly slowed down by the backing material, and only the carbonized portion of the ignited portion and a small portion thereof were not carbonized but spread to other portions. According to the present invention, a composite material that can be hardened by resin impregnation, or bonded or superposed on a backing material in a semi-cured state, and molded or punched with a metal mold is obtained.

[Brief description of the drawings]

[Fig. 1] Three-dimensional view of a cylindrical mold

FIG. 2 is a three-dimensional view of a corrugated mold having cut surfaces at both ends.

FIG. 3 is a sectional view of an eyeglass mold.

[Fig. 4] Three-dimensional view of eyeglass mold

[Figure 5] Test methods listed in Table 1

[Explanation of symbols]

 Reference Signs List 1 composite material 1-1 wood impregnated and injected with resin 1-2 backing material 2 mold 3 mold 4 experimental material 5 candle flame 6 candle used in experiment

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI B32B 21/08 B32B 21/08

Claims (8)

[Claims] 1. A composite material capable of performing curved surface processing and punching by bonding a backing material after impregnating and injecting a highly flexible synthetic resin into wood by depressurization or depressurization and a method for producing the same. 2. A highly flexible synthetic resin is impregnated and injected into wood by depressurization or depressurization and pressurization, and the impregnated resin is bonded with a backing material in an uncured state by using an adhesive to reduce heat. A composite material capable of reacting and curing a synthetic resin impregnated in wood while performing curved surface processing and punching processing while adding the same, and a method for producing the same 3. A highly flexible synthetic resin is impregnated and injected into wood by depressurization or depressurization and pressurization, and the impregnated resin is bonded with a backing material in an uncured state by using an adhesive to form a curved surface. Composite material capable of reacting and hardening a synthetic resin impregnated in wood after punching and punching, and a method for producing the same 4. A highly flexible synthetic resin is impregnated and injected into wood by depressurization or depressurization and pressurization, and the impregnated resin is superposed on the backing material in an uncured state without using an adhesive, and heat is applied. A molded product bonded to a backing material by resin flowing out of wood, while simultaneously performing a curved surface processing and a punching process to react and cure the synthetic resin impregnated in the wood and a method of manufacturing the same. 5. A highly flexible synthetic resin is impregnated and injected into wood by depressurization or depressurization and pressurization. Then, the impregnated resin is hardened and an adhesive is used to adhere the backing material to the wood to reduce heat. While performing the curved surface processing and punching processing,
Composite material capable of temporarily softening and re-hardening synthetic resin impregnated in wood and its manufacturing method 6. After impregnating and injecting a highly flexible synthetic resin into wood by depressurization or depressurization and pressurization, the impregnated resin is cured and superposed on a backing material without using an adhesive. At the same time as performing the curved surface processing and punching processing, the synthetic resin impregnated in the wood is fluidized, the resin that has flowed out of the wood is adhered to the backing material, and then the synthetic resin is re-hardened and the molded product Production method 7. A highly flexible synthetic resin in which a dye or a pigment is dissolved or dispersed is impregnated and injected into a thin plate of 0.1 mm to 3.0 mm by means of reduced pressure or reduced pressure to form a color set. A molded product obtained by superimposing on a backing material coated with an adhesive, performing a curved surface process and a punching process, curing a synthetic resin impregnated in wood, and simultaneously curing and bonding the adhesive, and a method of manufacturing the same. 8. A highly flexible synthetic resin is impregnated and injected into a dyed 0.1 mm-3.0 mm thin plate by applying reduced pressure or reduced pressure to a dyed 0.1 mm-3.0 mm thin plate. , Color set and laminated, the impregnated resin is uncured in the uncured state without using an adhesive, superimposed on the backing material,
A molded product in which curved surface processing and punching processing are performed while applying heat to react and harden a synthetic resin impregnated in wood, and at the same time, are bonded to a backing material by a resin flowing out of the wood and a method of manufacturing the same.