JPS59123660A - Decorative particle board and its manufacture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a decorative particulate board that can be bent and used as a low-voltage clay net box, furniture, decorative panels, etc., and a method for manufacturing the same.

Particleboard, which is obtained by adding a binder to wood chips and making it into a board, is often used due to its lack of directionality in strength. Traditionally, the entire surface of the film is pasted with a decorative print. And in this thing, as shown in Figure 1 (a), particle board (2)
The V-shaped groove I2) is completely cut, and the film 06) is fully bent at the 7-shaped groove I2 as shown in Fig. 1(b), and the V-shaped groove T22) is butted against each other to facilitate the bending process. It is something that can be done. However, in this case, conventionally, a polyvinyl chloride film (15) was printed on the surface of a manufactured particle board (2) using a vinyl acetate adhesive or the like.
However, the adhesion between particle board (2) and fiber 7m 06) is weak and peeling easily occurs, and the strength of the polychloride film (1) itself and the book itself is low. As a result, there is a problem in that the film (15) peels off particularly at the bent portion shown in FIG. 1(b), resulting in a high probability of failure. Furthermore, in terms of quality, since the film θ5) is attached to the surface of the sungained verdicle board using an adhesive such as vinyl acetate, if the thickness of one film (16) is thin and glossy, There is a problem in that the swelling of the chips on the surface of the small particles causes a shadow called a "pocket" on the cosmetic surface, resulting in an unsatisfactory finish on the cosmetic surface. In addition, in this product, in order to attach the film (15) after making the particle board (2i fc board), the film (15) is attached.
The process for pasting (I5) required a separate diameter, which increased the number of processes and led to cost reductions.

In addition, when manufacturing particle board gold,
It is already known that continuous production is possible using an apparatus such as that shown in FIG. That is, this device spreads wood chips (x) coated with a binder onto an endless conveyor belt (6) from a spreader (9), and
) to the fully rotating heating drum (7)] to the conveyor belt (6
) and the rotating heating drum (7) to remove wood chips (fl) ffi
By tightening, the particle board L21 w is transferred as the wood chips (1) are transferred by the conveyor belt (6).
It is designed to look like a v-board. This product has the advantage of being able to continuously make plates for long particle boards (2) and has extremely high production efficiency, as well as being able to make plates for thin sheets ranging from 1.6" to 7.0!.

And there is also Bartik 11 board (2
) can be applied at the same time as the plate making of the particle board (2) using this device.In other words, the feeding speed of the long film (15) and the conveyor belt (6) can be A layer of scattered wood chips (1) on a conveyor belt (6) in sync with a rotating heated drum (7)
At the same time, the film (I5) is fused and pasted on the particle board (2) by supplying it between the particle board (2) and the conveyor belt (6) and the rotating heating drum (7). The goal is to make sure that

However, in this case, since the film Q5) is also fused and adhered to the rotary heating drum (7), the softening temperature of the film (15) is Rotating heating drum [7) K
(The heating temperature is set lower than the heating temperature), and operations such as applying a mold release agent to the rotating heating drum (7) are required.
Also, adhesive to particle board (2) is made of wood chips fl.
), the adhesion is weak, and the water vapor generated from the wood chips (1) during hot pressing by the rotating heating drum (7) causes the film to become particle boat (
2) This causes further peeling and further damage called puncture, which is not practical in practical implementation.

In addition, there is a pattern 1*, which is made of reinforced paper completely impregnated with or mixed with synthetic resin, with a pattern on the surface, an intermediate resin layer made of polyethylene, polypropylene, etc., and reinforced paper with reinforced paper impregnated with or mixed with synthetic resin. A foldable decorative nordicle board is obtained by pasting a three-layered decorative paper with a backing layer that is not completely patterned onto a particle board using a device similar to that described above. provided. However, even this product is made to adhere to the particle board using a binder for decorative paper and whole wood chips, and the adhesion is weak, similar to the above.
The water vapor generated in the wood chips causes many punctures, resulting in a very high defective rate, and the strength of the decorative paper itself is extremely weak, so it cannot withstand the folding process shown in FIG. 1 in practical terms.

The present invention has been made in view of the above points, and a primary object of the present invention is to provide a decorative particle board in which a decorative film is attached to a particle board with high adhesive strength. A second object of the present invention is to provide a method for manufacturing a decorative particle board, which allows a decorative film to be attached to a particle board with high adhesiveness. Therefore, the decorative particle board according to the present invention is made of wood chips (1) and is coated with a heat-sealing layer (4) of a thermoplastic resin adhesive film (3) on the surface of the particle board (2). It is characterized by a thermoplastic (sealable decorative film (5)) on which a decorative print has been applied. The decorative particle board according to the present invention can be attached to a high temperature plastic resin decorative film (6) and a particle board.
1 construction method is to scatter wood chips (1) that have been completely coated with a binder onto an endless conveyor belt (6), and
e+ (il-) By guiding the scattered wood chips (1) to the rotating heating drum (7) and compressing them between the conveyor belt (6) and the rotating heating drum (7), the conveyor belt (
6) When particle board (2) is continuously made into strips as the wood chips (1) are transferred, a long thermoplastic resin having a softening temperature lower than the heating temperature by the rotating heating drum (7) is used. Decorative film (3) and a long thermoplastic resin decorative film (5) having a softening temperature higher than the heating temperature by the rotating heating drum (7).
) is supplied as the compare belt (6) advances with the adhesive film (3) being interposed between the layer of scattered wood chips (1) and the decorative film (5). −
The adhesive film (3) is heated and pressed between the rotating heating drum (7) and the conveyor belt (6) through a layer of scattered wood chips (+) to melt the adhesive film (3) and form the heat-sealing layer (
4) Converting (5) Attaching the decorative film to the party △ club board (2) made of wood @ (1) Br! By using the decorative film (5) and the thermoplastic resin adhesive film (3), which have a softening temperature higher than the heating temperature by the rotating heating drum (7), it can be made continuously at the same time as the particle board is made. Makeup film (5)
It is designed so that it can be pasted completely.

The present invention will be explained in detail below. FIG. 3 shows a particle hoard whose surface has been decoratively treated according to the present invention.
Thermoplastic resin adhesive film (3) on the surface of particle board (2) obtained by making wood chips ('In board)
A thermoplastic resin decorative film (5) with a decorative print such as a wood grain pattern on the back side is attached to the particle board (2) using a thermal adhesive layer (4) in which the film is thermally melted and solidified. Here, as the adhesive film (3) of thermoplastic resin, a polyolefin-based film is used from the point of view of cost and moldability, but since polyolefin is non-polar and has poor adhesive properties, polyolefin has a polarity. It is preferable to use one that is copolymerized and introduced. In other words, this product is made by copolymerizing a polyolefin such as polyethylene or polypropylene resin with a polyester such as maleic acid, fumaric acid, acrylic acid, or methacrylic acid, which has a polar group in the carboxyl group, such as printing.
For example, representative examples include FAA (ethylene/acrylic acid), EMA (ethylene/methacrylic [12]), EEA (ethylene/ethyl acrylate), and ionomer (ethylene/acrylate). This product is provided as an adhesive polyolefin resin by Mitsubishi Yuka's "Mojitsuk", Mitsui Petrochemical's "Atmar", Sumitomo Chemical's "1 Bond First", Toa Fuel Chemical's "HA series", Exoc's "Dixon", etc. This can be used by forming it into a film. By fully using the adhesive film (3) made of such highly adhesive resin, the adhesion of the adhesive film (3) to the particle board (2) and the decorative film (6) is improved, and the adhesiveness of the adhesive film (3) to the particle board (2) and the decorative film (5) is improved. ) can improve the peel strength.

The decorative film (5) is preferably made of polyester, particularly polyethylene terephthalate (PET). Films made of polyethylene, polypropylene, polyvinyl chloride, etc. have low strength and tend to tear during bending as shown in Figure 1, so it is better to use PET film, which has higher strength. Heating temperature by rotating heating drum (7) (usually 120-1
It is also preferable to use PET film because it has a higher softening point than 30°C. Furthermore, since PET film has high strength, it can withstand use even when formed thinly, and can also provide cost-saving effects. It is also possible to use a nylon film that satisfies these requirements. Further, the thickness of the adhesive film (3) and the decorative film (5) are variously selected depending on the type, etc., but generally the adhesive film (3) is 15 to 10 mm thick.
It is preferable to use a decorative film (4) with a thickness of 0μ and a thickness of 16 to 50μ.

Furthermore, the particle board (2) is made of wood chips (1) 'i
': Obtained by bonding with a binder, as shown in Figure 5, coarse wood chips (1) are formed in the center of the thickness, and as they move from the center to the front and back sides, fine wood chips gradually become Particle board (
2) is made into a board so that a layer 06) with a coarse structure is formed in the center of the thickness and a layer Oη with a dense structure is formed in the surface layer, so that the surface of the particle board (2) is dense and smooth. That's how it is. The general particle size distribution of wood shavings (11) is 25-35% for 36-mesh anter, 36-35% for wood chips (11);
10-20% for 28 meshes, 15-25% for 28-20 meshes, 20-30% for 20-10.5 meshes, 1-10% for 10.5 meshes ( Both are about % by weight).

In this way, the surface of particle board (2) is considered to be dense and smooth, but particle board (2)
Cosmetic film (5) created by rough wood chips floating on the surface of
In this case, as shown in Figure 4(a), a poly-D-pyrene film with a thickness of about 50 to 100 μm is placed between the decorative film (5) and the adhesive film (3). Interposing an intermediate film (23) such as
As shown in Figure 4(b), reinforced paper such as tissue paper (241'
or by interposing an intermediate film (23 and brown reinforcing paper (2) as shown in FIG. 4(C),
It is possible to prevent the unevenness of the particle board (2) from standing out on the surface of the decorative film (5) due to the concealing effect of the intermediate film and the reinforced paper (1).
In particular, when a film with a glossy surface (7) is used as the decorative film (5), the unevenness on the surface of the decorative film (5) is likely to be noticeable. This can be effectively prevented.

(The following is a blank space.) Next, the production of decorative particle board as shown in L will be explained. Figure 6 shows an apparatus for manufacturing decorative particleboard, in which a conveyor belt 6) is made of steel or the like and shaped into an endless belt, and has a plurality of guide rolls.
8)f+8)... and a rotating heating drum (7), and is driven in the direction of the arrow in Fig. 6, and this conveyor belt 6) It is wrapped around about 4 to 50 yen.In addition, conveyor belt 1611VC is distributed on the L side of conveyor belt IL Toro+. You can use particle board adhesives such as urea resin adhesive and phenolic resin adhesive.
It is also possible to use other isocyanate adhesives.

However, in the production of Verdicle Board, the wood chips that have been coated with a binder after going through the steps of crushing, drying, and grading the wood chips are coated with a binder and then spread using a spreading machine! 91 VC is input and the conveyor belt driven by the spreader (9) (wood chips +
Spray l+. Here, a spreading mechanism with a blower of the spreader + 911d2 section (211 starvation) is used to spread thin wood chips on both the front and back surfaces by blowing and spreading wood chips with a particle size distribution from 6 mesh under to 10.5 mesh over. The wood chips are carried on the middle layer, and the layers of wood chips are scattered on the conveyor belt + into a multi-layered structure consisting of coarse chips (country and dense layer 17) as shown in Figure 5.
611Jc can be formed. The 110 layer of wood chips containing the binder dispersed in this way is transferred to a conveyor belt (
As step 6) progresses, the rotating heating drum +71 [is fed, but the conveyor belt (6) is cooled by a guide roll (181 is a cooling roll) shown by Vca to prevent the binder from being pre-cured on the conveyor belt (6)E. It is best to keep the layer of wood shavings on the rotating heating drum (
7) When feeding the thermoplastic resin adhesive film 131
Decorative film i511 f with wood grain pattern and other decorative lint on the back side Layer of wood shavings III and rotating heating drum +
71.1! : Send between. That is, adhesive film i
31 and the decorative film +51 are laminated and integrated and wound on the supply roll 11011c, and the Koshibear belt (6
) Disposed on the E side, from one supply roll ζ 101, the pot metal sheet consisting of adhesive film i 31 and decorative film 51)
It is fed out in synchronization with the feed speed of the wood chips t61 and continuously supplied to the space between the wood chips I'd and the rotating heating drum]7). The adhesive film 13) is the F side of the decorative film II/mu 151 (in the lllli'r position state, that is, the adhesive film 13) is the decorative film 151.
Joint sheet (8) sandwiched between and wood chips III
is supplied. As the Koshibear belt (6) advances, the wood chips (1) are scattered on the conveyor belt 16)t and are also supplied to the rotating heating drum 17).
It is pressed between the 11-piece rotating heating drum (7) and the conveyor belt 6) and receives heat from the rotating heating dome (7), and furthermore, the vinegar.

It is possible to manufacture a thin particle board 121 which is formed by a mononoke heating roll of C and is heated via a conveyor belt 161 from this guide roll (I8), to which wood chips 111 are bound by a binder. This particle board 121 is continuously made into a strip shape as the conveyor belt L1-+61 advances, and is cut into a predetermined size in a subsequent process. At this time, the composite sheet 18) consisting of the adhesive film 13) and the decorative film 151 is supplied between the rotary heating drum (7) and the layer of wood chips il+, so that the adhesive film (3) is rotated and heated. The particle board 121 is melted by heating by the drum (7), and the adhesive film (3) is fused to the particle board 12) on which the adhesive film 131 is made.
A table as shown in Fig. 3 with decorative film 15) pasted on
You can get the whole board by processing 1 vertic. Here, as the adhesive film 13), a material having a softening point lower than the heating temperature of the rotary heating drum at +71 K is used. It is best to use a rotating heating drum +71 K as a decorative film i51.
This method uses a material with a higher softening point than the heating temperature.
It is preferable to use the PET film described above. Therefore, the decorative film 15) is melted and transferred to the rotating heating drum I71V.
The decorative film 15) can be attached to the board 12) by the heat-sealing layer +41 of the adhesive film 131 without adhering to the bone. And also a dense layer of particle board 121 (
When the VC adhesive film melts, the wood chips 11) on the surface of the bonding agent (3) are also bonded by the melting agent (F) that slightly penetrates into the board 121K, resulting in coarse ariMt. A dense layer of wood chips (1) with a large particle size (1η-) is passed through the Vertic 1 board, so that it does not stand out on the surface of the 210 board.
It can be used with C to obtain a flat (particle board 2 with a 1'# surface). The heat-sealing layer 14) is made of a highly adhesive adhesive film 1;
As the adhesion to the wood chips is excellent, the wood chips have excellent adhesion to the vertices 1 and boards 12) that are to be vacated. When hot-pressing between I-+61 and I-+61, the decorative film 15) will not be punctured and peeled off from the surface of the particle board (2) due to the pressure caused by the water vapor from the wood chips. The generated water vapor is behind the particle board, 2).]
': J Bearbe L t-+61 [It will escape from the 111 plane.

In addition, as shown in L, the decorative film i5i and the adhesive film 1
When using a composite sheet + 81 which is an integrated lamination of 31 and 31, when creating composite sheet 8), both films 1
3) In order to further improve the adhesion of +51, it is recommended to perform a corona discharge treatment and use a dry laminating adhesive or an anchor coating agent. That is, the method for creating the composite sheet (8) involves bonding a pair of film-formed films +31 +51 to each other, and the former method will be described in detail. First, as shown in FIG. 10, an adhesive film 13) and a decorative film 5) are extruded from an extrusion molding machine 120 and cooled by a cooling roll 126) to form a film. 1 Shim 131 +51 Q are each subjected to corona discharge treatment. Of course, a preformed film 131151K may also be subjected to corona discharge treatment. As shown in Fig. 10, the corona discharge treatment involves generating high-frequency waves between the insulated electrode (29) connected to the transformer (c) of the discharge treatment machine Q force and the grounded dielectric roll. , high voltage and pressure are applied to cause total dielectric breakdown in the air and a corona discharge is generated, and during this corona discharge, the film +31. The entire surface of the film +31.151 is subjected to corona discharge treatment by passing through the +51. In this way, the film 131
, 151, the surface of the film i31. This is to polarize and activate the surface of +51 to improve adhesive performance. After this, dry laminating adhesive (preferably urethane adhesive) is applied to at least one of the r shims 131 and 151. Then, the composite sheet 8) is obtained by adhering and integrating the quills 1b and 131 and +51f via this adhesive. Next, to explain how to obtain the composite sheet (8) by gluing the extruded piece adhesive tape (3) to the decorative film 15) shaped into K1ff1, first, the decorative film 1
The 1st mill is subjected to corona discharge treatment in the same manner as shown in FIG. 1O, and an anchor coating agent is applied to the surface of the decorative film (5). Anchor coating agents are used to activate the surface of the film and increase the bonding strength between the films when manufacturing a composite film by coating a formed film with an extruded film.
The anchor coating agent has high polarity, and this polarity increases the polarity of the surface of the decorative film 15). As anchor coating agents, organic titanium-based anchor agents, polyethylene chloride-based anchor coating agents, and isocyanate-based anchor agents are provided.
Isocyanate-based anchor coating agents are preferred due to their heat resistance. The adhesive film 13) extruded from an extrusion molding machine and softened by direct exposure to the decorative film 1 (5) is layered with an anchor coating agent interposed therebetween, and the decorative film 15 is passed through the anchor coating agent between the rolls. ) and the adhesive film 13) are thoroughly integrated into the composite sheet i81.
This is what you get. Here, make-up film and corona discharge treatment U! It can be seen that the surface 0 is activated by the anchor coating agent and is polarized by the anchor coating agent, and the decorative film 151 and the adhesive hook 11. It is possible to obtain a composite sheet +81 i7 in which the film 131 and the adhesive film 131 are integrated with each other with high adhesive strength. Sweet, Figure 4 (2+ (bl (c
When adhering a multi-layered material such as shown in FIG. However, such a multilayer composite sheet (8) can also be produced using the same discharge treatment as in Section L, treatment with a dry laminating adhesive, and treatment with an acid carf agent. can be done.

The one shown in E, Figure 6 is a composite sheet (8) with a decorative film i51 and an adhesive hook 11. Then, as shown in Figure 7, the adhesive film (31 and the decorative film 1) are attached to the particle board.
Fil and separate supply Q -11, 1101111
11 and conveyor belt IL h fTil f:,
Each supply (l −11, +1(111101
Feed out the adhesive film 13) and the decorative film 51 and roll +1! JIQ! Send separately with J+,
Using the presser roll 2o), feed the adhesive nail 11 tom 13) and the decorative film 15) in a combined state,
Adhesive lie 1; Makeup film 1 through Tsum 131 (5)
It is also possible to paste all the parts.

In this case, the makeup film 1Til, the adhesive film L,
Compared to the one in Figure 6, in which +31 is tied in advance as a composite sheet (8), the adhesion of the decorative film 5) and adhesive quill 13) is not as good, so the adhesive in Figure 6 is not as good. It is preferable to carry out, of course, the decorative film IF11 and the adhesive film 13) in the case shown in Fig. 7 by subjecting them to an O discharge treatment and then performing all treatments using dry laminating adhesives and anchor coating agents. Therefore, it can withstand the Tenkawa River.

Apply the glue 11 tsum 131 and the decorative film 15) to the layer of wood chips 111 on the Shibeabe IL l-+61 and supply the wood chips 11) to the layer of wood chips 111). and the rotating heating drum (7), but as shown in Figures 8 and 9, the adhesive film 1
3) and makeup film 15) on a conveyor belt)
Supply the first octopus of fGl, 15B L, to sprinkle wood chips on this 1:, and add 1 x waste film 1 and 11). A layer of wood shavings 111 and a substrate IL l-+61 may be supplied between the layer of wood chips 111 and the layer of wood chips 111. In this case, believers and 1
At step 7, the adhesive film 13) is melted by heating from the guide rolls 18 shown in FIG. film, fil
Make a board with wood chips 11). board 12
) is pasted on the page. In this case as well, a decorative film 15) with a high VCi softening point is interposed between the adhesive film (3) and the conveyor belt (6), so that the adhesive film (3) melts and adheres to the conveyor belt 161K. There is no such thing.

As I said in theory 1, Kibatsu l:! The decorative particle board related to T-IK is made by pasting a decorative thermoplastic resin film on the surface of a particle board that has been plated with Kino 4 through a fused stone layer of a thermoplastic resin adhesive film. Since the decorative film is made of Vertical 1, the decorative film can be firmly adhered to the particle board by the heat-sealing layer of the adhesive film, which has good adhesion to the board, and has a long lifespan. Bending operations as shown in Figure 1 can be carried out without fear of peeling off the decorative film. Furthermore, the method for manufacturing decorative particle board according to the present invention includes:
The wood particles scattered on the conveyor belt are compressed between the conveyor belt and the rotating heating drum as the conveyor belt moves, and the thermoplastic resin decorative film is used to continuously produce particle board. The adhesive film is supplied with a decorative film, the adhesive film is completely melted, and the decorative film 1 to 8 is attached to the tickle board using the heat-sealing layer of the adhesive film. ! ! ! The decorative film can be attached to the J-takele board continuously at the same time as the construction, and production efficiency can be greatly improved. At the same time, the softening temperature of the adhesive film is set lower than the heating temperature by the full-rotation heating drum, so even if the adhesive film is softened and melted by the rotating heating drum, the decorative film with a high softening temperature will not reach the rotating heating drum. There is no need to apply a mold release agent to the rotating heating drum, and there is no need to apply a mold release agent to the rotating heating drum. Since the decorative film is firmly adhered to the particle board by the thermal fusion bonding of the film, there is no fear that the decorative film will peel off from the particle board due to water vapor generated from the wood chips during hot pressing with a rotating heating drum.

Next, the present invention will be specifically explained using examples.

<Example 1> Using the apparatus shown in Fig. 6, 14
Surface temperature 2120-130℃ through oil of 0-150℃
When set to VC, the guide roll (I (
6) [Surface temperature is 160-170 through 190℃
It was set at ℃. The spreader [9] uses a urea resin adhesive with a solid content of 66% to apply a solid content of 15% to the dry weight of wood chips 11).
% mixed wood chips ill, conveyor belt +61
Tree JTF4+11 was sprayed using the K sprayer (9). Here, the particle size distribution of wood chips 11) - 31.8% for 36 mesh ants, 16.2% for 36-28 meshes,
2069% of 28-20 meshes, 2O-1 (1,
The percentage was 25.8% for the 5 mesh and 5.3% for the 10.5 mesh over (all percentages by weight).

A sweet thermoplastic resin adhesive film 13) was made by using high-pressure polyethylene film 17 (Atomer FLF305: manufactured by Mitsui Petrochemicals, softening point 83°C) to a thickness of 30μ, and a thermoplastic resin was used. Cosmetic film 15
) with a wood grain pattern printed on the back side and a biaxially stretched fc P
First, the adhesive lie 11 and the decorative film were each treated with 40 dyne using a corona discharge treatment machine.
A discharge treatment was carried out under the following conditions. This makeup filler 1
Heat-resistant polyester urethane adhesive (manufactured by Soken Yakuhin) was used as an adhesive for dry lamination on one side of the sheet.
A-310) Total 59/rr? Apply with a coating amount of 6
The adhesive was dried by passing it through a dryer at a temperature of 0 to 70° C. to remove the adhesive solvent. Next, the adhesive film 1 and the decorative film were laminated with a total adhesive interposed therebetween, and these were passed between rolls and adhered to each other to obtain a composite sheet 1-+81i.

This composite sheet (8) was then fed to the apparatus shown in FIG. 6 in synchronization with the feeding speed of the conveyor belt (6).

With this device, a decorative particle board having a thickness of 565 cm and a decorative film attached through a heat-sealing layer of an adhesive film was obtained. No punctures occurred with this product, and the planar tensile strength of the cut Vertic 1 board and the decorative film was tested based on '17 JIsVc, and it was 13 to 15 Kg/d. The breaking strength was almost comparable to the breaking strength of hflll\-ticklepod plain wood, and was much higher than the 4 kg/ctd which is considered to be acceptable.

〈Example 2〉 Using the g-neck shown in Fig. 8, using the same conditions as in Example 1 under other conditions, a vertical board with a thickness of 5.5 mm was applied through a heat-sealing layer of an adhesive film. If the film is attached
I obtained a decorative particle board. Even with this product, no punctures occurred at all, and the planar tensile strength Vi of the vertical board and decorative film 1 was 13 to 15 Kq/-.

<Example 3> VC Example 1 using the same decorative film as Example 1
Corona discharge treatment was performed in the same manner as above, and one side of the decorative film was coated with TDI's isocyanate-based ashcar coating agent. /
rr? It was applied in an amount of . In addition, in Example 1, the adhesive film obtained by extruding the above-mentioned Atomer FLF305 (i7 press molding machine (conditions 280 ° C.) to a thickness of 30 μm was extruded and directly applied to the decorative film in the softened state through the Ashikar coating agent. A composite film was obtained by laminating.

Using this composite sheet 2 and using the apparatus shown in FIG. 6, the conditions are '! <MK In the same manner as in Example 1, a whole decorative particle board was obtained in which the particle board had a thickness of 5.5 m and a decorative film was pasted through the heat-sealing layer of the adhesive film. Even with this item, no packs occur,
The plane tensile strength of the particle board and the decorative film was 13 to 15 K4/c shoulder.

<Example 4> As a thermoplastic resin adhesive film 13), a film made of adhesive high-pressure polyethylene 1-non (Atomer FLF305; manufactured by Mitsui Ishiura Chemical, softening point 83°C) with a thickness of A30μ was used, and the thermoplastic resin was Resin decorative film 5) PET biaxially stretched film with a wood grain pattern printed on the back side (
Conveyor belt llj l-16 using the device shown in Fig.
This device, which is fed in synchronization with the feed rate of 1, allows the
- The thickness of the teakle board is 5.5 and the adhesive glue is 11.
The entire length of the surface-treated particle board was covered with a decorative film attached via a heat-sealing layer. This product did not cause any punctures, and when tested based on the JISVc total plane tensile strength of a small particle board and 11-no-8 decorative board, it was 8 to IOK/crA.

<Comparative Example 1> In Example I, a total of 10 g of vinyl acetate adhesive was applied to the back side of the makeup film 11 without using the 4Y adhesive film (3).
Example 1 except that the coating was applied in an amount of 771'
In the same manner as above, I obtained all the decorative particle boards of Vertique 1, the thickness of the board was 5.5 mm, and the decorative film was attached. In this case, banks occurred in the decorative film, and the plane tensile strength between the particle board and the decorative film was 2 to 3 Kg/cJ (Comparative Example 2). Apply vinyl acetate adhesive to the surface -50? /η? A decorative particle board made of polyester having a thickness of 2571 mm and having a 1IllIVc wood grain pattern printed on the back was attached thereon to obtain a decorative particle board. In this case, the vertical tensile strength of the board and decorative film is 2.
/ 3 Ky /' ca, which was completely impractical. In this case, polyvinyl chloride film (thickness 25
μ), plane tensile strength Vi8~], OK4
/ tri.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are cross-sectional views showing the bending process of particle board, Figure 2 is a schematic diagram of a device used in a conventional example, and Figure 3 is a cross-section of an embodiment of surface-treated particle board in the present invention. 4(a), 4(b), and 4(C) are cross-sectional views of other embodiments of the same as above, FIG. A schematic diagram showing an example of the device used in the present invention, FIG. 6 (middle) is an enlarged sectional view of four parts of FIG. 6(a), FIG. 7 is a schematic diagram showing the other side of the same device, and FIG. (a) is a schematic diagram showing the other side of the same device, FIG. 8 (Q)) is an enlarged sectional view of the four parts of FIG. Figure 10 is a schematic diagram of the apparatus for electrical discharge treatment. (1) is wood chips, (2) is particle board, (3) is adhesive film, (4) is heat fusion layer, (5) is a decorative film, (6) is a co-X/bare belt, (7) is a rotating heating drum, and (8) is a composite sheet. Agent Patent Attorney Ishi 1) Long 7 Figure 1 (( )) Fyo/Zen 2 (b) Figure 2 Figure 3 Figure 5 Figure 7 Figure 6 (0) (b) Figure 9 Figure 8 (0) (b) Figure 10 Procedure amendment (voluntary) - May 2, 1980 Mr. Commissioner of the Japan Patent Office 1 Case Indication Patent Application No. 232075, 1988 Postal Code 530 Address 1-12-17 Umeda, Kita-ku, Osaka (5th Floor, Umeda Building) 1 Name ( 6176) Patent Attorney Doshi 1) Choshichi...Telephone Osaka (06) 345-7777 (Representative)
゛・l、、１゛8 Contents of amendment attached to iUJ Kaa] Correct Submitted application number Patent application No. 1987-2. :32075S1, Delete "Peeling" on page 6, line 7 of details jM, and insert "K Peeling and loss." 2. Correct the "10" in the 10th line of No. 32 Tei above to "50". 3. Delete r 5 tmn J on the 19th line of the same page and insert 15.5 mm J. 4. [2/convex] of 33rd negative 5th line 1 of the same above, total 6111
Insert the remainder "'2~3". Agent Patent Attorney Ishi 1) Choshichi

Claims (1)

[Scope of Claims] (1) A decorative thermoplastic resin film on which a decorative print is applied is adhered to the surface of a particle board made from wood chips through a heat-sealing layer of a thermoplastic resin adhesive film. A decorative particle board featuring: (2) The decorative particle board according to claim 1, wherein the thermoplastic resin adhesive film is made of a highly adhesive resin obtained by copolymerizing Voriolefin: 7 with a polar top. (3) The decorative Vertique F17 board according to claim 1 or 2, wherein the thermoplastic resin decorative film is formed of a resin having a higher softening temperature than the thermoplastic resin adhesive film. . (4) The decorative particle board according to claim 1, 2, or 3, wherein the thermoplastic resin decorative film is a polyester film. (6) The wood chips coated with a binder are spread on an endless conveyor belt, the conveyor belt is guided to a rotating heating drum, and the spread wood chips are compressed between the conveyor belt and the rotating heating drum. As the wood chips are transported by a belt, 1\-In order to continuously manufacture the entire tickle board, a long thermoplastic resin adhesive film whose softening temperature is lower than that heated by the rotating heating drum and a rotating heating drum are used. A long thermoplastic resin decorative film with a decorative print whose softening temperature is higher than the heating temperature is attached as the conveyor belt advances with an adhesive film interposed between the layer of scattered wood chips and the decorative film. This is then heated and compressed between a rotating heated drum and a conveyor belt through a layer of scattered wood chips.
A method for producing decorative particle board, which comprises heat-melting an adhesive film and using the heat-adhesive layer to adhere the decorative film to a particle board made of wood chips. (6) A method for producing decorative particle board according to claim 5, characterized in that a thermoplastic resin adhesive film and a thermoplastic decorative film are supplied between the rotating heating drum and the layer of scattered wood chips. . (7) Manufacture of a decorative board according to claim 5, characterized in that a thermoplastic resin adhesive film, a thermoplastic resin decorative film, a ft] bare belt, and a layer of scattered wood chips are supplied between the layer. Method. (8) Claims 5 to 7, characterized in that the thermoplastic resin adhesive film is formed of a highly adhesive resin made by copolymerizing polyolefin with a polar T-summer.
A method for producing decorative particle board according to any of paragraphs. (9) The thermoplastic resin adhesive film and the thermoplastic resin decorative film are supplied in the form of an integrated laminated composite sheet. A method of manufacturing decorative particle board. (lO) The decorative particle board according to claim 9, characterized in that the composite sheet is a lamination of a thermoplastic resin decorative film, a thermoplastic resin intermediate film, and a thermoplastic resin adhesive film. manufacturing method. (11) The method for manufacturing a decorative particle board according to claim 9, wherein the composite sheet is a laminated composite sheet of a thermoplastic resin decorative film, a thermoplastic resin adhesive film, and paper. 02) The method for producing decorative particle board according to claim 9, characterized in that the composite sheet is a lamination of a thermoplastic resin decorative film, a thermoplastic resin adhesive film, an intermediate film, and paper. . (13) A method for manufacturing a decorative particle board according to any one of claims 5 to 8, characterized in that the thermoplastic resin adhesive film and the thermoplastic resin decorative film are each supplied separately.