JP3356514B2 - High strength particle board and method of manufacturing the same - Google Patents
High strength particle board and method of manufacturing the sameInfo
- Publication number
- JP3356514B2 JP3356514B2 JP32047893A JP32047893A JP3356514B2 JP 3356514 B2 JP3356514 B2 JP 3356514B2 JP 32047893 A JP32047893 A JP 32047893A JP 32047893 A JP32047893 A JP 32047893A JP 3356514 B2 JP3356514 B2 JP 3356514B2
- Authority
- JP
- Japan
- Prior art keywords
- specific gravity
- particles
- strength
- particle board
- board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高強度パーティクルボ
ード及びその製造方法に関するものであり、より詳しく
は、パーティクル（チップ）の選定及びそのフォーミン
グ等で強度を高めた高強度パーティクルボード及びその
製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-strength particle board and a method for manufacturing the same, and more particularly, to a high-strength particle board whose strength is enhanced by selecting particles (chips) and forming the same, and the like, and manufacturing the same. It is about the method.
【０００２】[0002]
【従来の技術】パーティクルボードは、環境保護、資源
の有効利用が叫ばれる今日において、合板の代替として
注目されている。また、パーティクルボードの製造で
は、原料であるパーティクルの形状の物性に及ぼす影響
等の文献も数多く見られる。例えば、 曲げ強さ（Ｍ
ＯＲ）はボードのエレメントの長さ増加及び厚さ・巾減
少に伴い増大し、剥離強度（ＩＢ）はエレメントの厚さ
増加及び長さ・巾減少に伴い増大する。一方、吸水厚膨
潤率（ＴＳ：寸法安定性を示す指標）は厚さ・長さの減
少に伴い良好となること（木材学会誌、Ｖｏｌ３３Ｎｏ
５ ３７６−３８４頁 低比重パーティクルボードの製
造技術）。 パーティクルボードの圧縮比の大きなものは、一般
にＭＯＲが向上するが、パンク、ＴＳが悪くなること
（材試研報、Ｎｏ２９２ １２１−１２３頁、Ｎｏ２９
４ ６０−６５頁 パプアニューギニア材の加工的性
質）。 低比重材小片が高比重材小片に比べて、一定のボード
比重で良好な小片間密着が得られ、従って、ボード材質
が向上される（Holzforsch,U, Holzerwert２０，１，１
〜１０頁 ’６８ Stegmanm,G,& Bismark,C,V）こと等
である。2. Description of the Related Art Particleboard is attracting attention as an alternative to plywood in today's world where environmental protection and effective use of resources are being called for. Further, in the production of particle boards, there are many documents such as the influence of the shape of particles as a raw material on the physical properties. For example, bending strength (M
OR) increases with increasing element length and thickness / width reduction of the board, and peel strength (IB) increases with increasing element thickness and length / width reduction. On the other hand, the water absorption thickness swelling ratio (TS: index indicating dimensional stability) becomes better as the thickness / length decreases (Journal of the Wood Science Society, Vol 33No).
5 pp. 376-384). A particle board having a high compression ratio generally has an improved MOR, but has a poor puncture and TS (Materials Research Report, No. 292, pp. 121-123, No. 29).
4 pp. 60-65 Workability of Papua New Guinea wood). As compared with the high specific gravity material pieces, the low specific gravity material pieces can obtain good adhesion between the small pieces at a constant board specific gravity, and therefore, the board material is improved (Holzforsch, U, Holzerwert 20, 1, 1, 1).
10 to '68 Stegmanm, G, & Bismark, C, V).
【０００３】従来、高強度パーティクルボード及びその
製造方法においては種々のものが提案されている。例え
ば、上下層を小パーティクル（小チップ）層とし、中間
層を大パーティクル層とし、各層間に繊維素材の補強層
を介在させて、強度を持たせたパーティクルボード及び
その製造方法が提案されている（特開昭５６−１３７９
４９号公報）。また、低比重パーティクルと中・高比重
パーティクルとを表層と内層に分けて構成したパーティ
クルボードも提案されている。従来からパーティクルボ
ードは、合板廃材等の利用で、原材料の比重が０．５〜
０．７のものを用いており、その強度的はＪＩＳの１０
０、１５０、２００タイプを満足すれば良好とされてい
る。Conventionally, various types of high-strength particle boards and methods for manufacturing the same have been proposed. For example, a particle board has been proposed in which the upper and lower layers are small particle (small chip) layers, the intermediate layer is a large particle layer, and a reinforcing layer of a fiber material is interposed between the layers to provide strength, and a method of manufacturing the particle board. (JP-A-56-1379)
No. 49). Further, a particle board in which low specific gravity particles and medium / high specific gravity particles are divided into a surface layer and an inner layer has been proposed. Conventionally, particleboard has a specific gravity of raw material of 0.5 to
0.7 is used and its strength is JIS 10
It is considered to be good if the 0, 150, and 200 types are satisfied.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記パ
ーティクルボードでは、以下の点に問題がある。各層
に種類の異なるパーティクルを使用するため、環境保
護、資源の有効利用の点で端材や廃材を十分に利用する
ことができない。ＪＩＳ規格（２００タイプ）での曲
げ性能は最高で、曲げ強さ（ＭＯＲ）１８０kgf/cm2 、
曲げ剛性（ＭＯＥ）３０×１０3kgf/cm2 であり、合板
に比して強度的に低いため、合板と同等の強度にするに
は材厚が大きくなり重量が過大となる。However, the above-mentioned particle board has the following problems. Since different types of particles are used for each layer, it is not possible to sufficiently use the offcuts and waste materials in terms of environmental protection and effective use of resources. The bending performance in JIS standard (200 type) is the highest, the bending strength (MOR) is 180kgf / cm 2 ,
The flexural rigidity (MO E ) is 30 × 10 3 kgf / cm 2, which is lower in strength than plywood. Therefore, in order to obtain the same strength as plywood, the material thickness becomes large and the weight becomes excessive.
【０００５】低比重パーティクルを使用してこれを高
圧縮比で圧密化したパーティクルボードでは、ボードに
高い曲げ強度及び曲げ剛性を付与することができるもの
の、そのボードのスプリングバックを増大させ吸水厚膨
潤率が悪くなる（寸法変化が大きくなる。）傾向にあ
る。 低比重パーティクルと中・高比重パーティクル別々の
層に分けることは材料調達面及び装置的に困難をきたす
場合がある。 パーティクルボードの特性とその原料であるパーティ
クルの形状との関係について、曲げ強度や曲げ剛性を高
めるパーティクルの形状であれば耐水性が低下するとい
う相反する傾向にある。 使用する接着剤の配合量等によっても耐水性に問題が
見られる。[0005] In a particle board obtained by using a low specific gravity particle and compacting it at a high compression ratio, it is possible to impart high bending strength and bending rigidity to the board, but the springback of the board is increased and the water absorption thickness swells. The rate tends to be worse (the dimensional change becomes larger). Separating the low specific gravity particles and the medium / high specific gravity particles into separate layers may be difficult in terms of material procurement and equipment. Regarding the relationship between the characteristics of the particle board and the shape of the particles as the raw material, there is a contradictory tendency that the water resistance is reduced if the particle shape increases the bending strength and the bending rigidity. There are also problems with water resistance depending on the amount of the adhesive used and the like.
【０００６】従って、本発明の目的は、ボード自身の厚
みが薄く、高強度、高剛性、及び耐水性があり、しかも
材料の調達設備面でも有利な高強度パーティクルボード
及びその製造方法を提供することにある。Accordingly, an object of the present invention is to provide a high-strength particle board having a small thickness of the board itself, high strength, high rigidity, and water resistance, and also advantageous in terms of equipment for procuring materials, and a method of manufacturing the same. It is in.
【０００７】[0007]
【課題を解決するための手段】本発明者等は、特定比率
に配合された低比重パーティクルと中・高比重パーティ
クルをパーティクルボードに用い、且つ高圧締すること
により極めて強度があり、且つ寸法安定性の良好なボー
ドができ、上記目的を達成し得ることを知見した。本発
明は上記知見に基づいてなされたもので、比重０．４未
満の低比重パーティクル（チップ）と比重０．４以上の
中・高比重パーティクルとの含有比が３：１〜１：３の
範囲にあり、且つ圧締成形後の比重が０．７以上である
ことを特徴とする高強度パーティクルボードを提供する
ことにある。Means for Solving the Problems The present inventors use a low specific gravity particle and a medium / high specific gravity particle mixed in a specific ratio for a particle board, and are extremely strong and dimensionally stable by tightening under high pressure. It has been found that a board having good properties can be formed and the above object can be achieved. The present invention has been made based on the above findings, and the content ratio of low specific gravity particles (chips) having a specific gravity of less than 0.4 to medium / high specific gravity particles having a specific gravity of 0.4 or more is 3: 1 to 1: 3. Another object of the present invention is to provide a high-strength particle board having a specific gravity within a range and a specific gravity of 0.7 or more after compression molding.
【０００８】本発明はまた、比重０．４未満の低比重パ
ーティクル（チップ）と比重０．４以上の中・高比重パ
ーティクルとを３：１〜１：３の範囲で含み、且つ圧縮
比１．５以上で圧締して製造することを特徴とする高強
度パーティクルボードの製造方法を提供することにあ
る。ここで、圧縮比とは、原料比重に対するボード比重
の割合（ボード比重／原料比重）である。The present invention also includes low specific gravity particles (chips) having a specific gravity of less than 0.4 and medium / high specific gravity particles having a specific gravity of 0.4 or more in a range of 3: 1 to 1: 3 and a compression ratio of 1: 1. It is another object of the present invention to provide a method for manufacturing a high-strength particle board, which is manufactured by pressing at a pressure of 0.5 or more. Here, the compression ratio is a ratio of board specific gravity to raw material specific gravity (board specific gravity / raw material specific gravity).
【０００９】以下、本発明に係る高強度パーティクルボ
ード及びその製造方法を添付図面を参照しながら詳述す
る。図１は、本発明の高強度パーティクルボードの一実
施例を示す断面図である。Hereinafter, a high-strength particle board and a method of manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a sectional view showing one embodiment of the high-strength particle board of the present invention.
【００１０】本発明に係る高強度パーティクルボード
は、低比重パーティクルと中・高比重パーティクルとを
含む単層であってもよいが、後述の接着剤塗布条件やパ
ーティクル形状の長さ等を考慮すると、図１に示す如く
表層１、３と内層２に分けた構造であっても良く、また
耐水性等の面からこのような構造が望ましい。The high-strength particle board according to the present invention may be a single layer containing low specific gravity particles and medium / high specific gravity particles, but in consideration of adhesive application conditions and particle shape length described later. As shown in FIG. 1, the structure may be divided into a surface layer 1, 3 and an inner layer 2, and such a structure is desirable from the viewpoint of water resistance and the like.
【００１１】パーティクルボードに含まれる低比重パー
ティクルはその比重が０．４未満であり、中・高比重パ
ーティクルはその比重が０．４以上である。低比重パー
ティクルと中・高比重パーティクルとの含有比は３：１
〜１：３の範囲、特に望ましくは３：１ 〜１：１の範
囲である。これらのパーティクルは通常の低比重材又は
中・高比重材チップ等から製造して適宜混合できる他
に、端材や廃材等を用いる場合には、予め端材、廃材の
段階で重量比で低比重パーティクル：中・高比重パーテ
ィクルが３：１〜１：３になるように分別することがで
きる。The low specific gravity particles contained in the particle board have a specific gravity of less than 0.4, and the medium and high specific gravity particles have a specific gravity of 0.4 or more. The content ratio of low specific gravity particles to medium / high specific gravity particles is 3: 1
-1 to 1: 3, particularly preferably 3: 1 to 1: 1. These particles can be produced from ordinary low specific gravity material or medium / high specific gravity material chips, etc., and can be mixed as appropriate.In addition, when scrap materials and waste materials are used, the weight ratio is reduced in advance at the stage of scrap materials and waste materials. Specific Grain Particles: Medium / high specific gravity particles can be separated so as to be 3: 1 to 1: 3.
【００１２】また低比重パーティクル及び中・高比重パ
ーティクルの形状は、その厚みが０．２mm以上、巾が
０．２mm以上、及び長さが０．３〜１０mmのものが望ま
しく、特に、内層と表層に分けてある場合には、その表
層のパーティクル形状は厚みが０．２〜１．０mmで、長
さが２．５〜１０mmの範囲にあるものがより望ましく、
内層のパーティクル形状は厚み０．２〜０．５mmで、長
さが２mm以上のものが望ましい。The low specific gravity particles and the medium / high specific gravity particles preferably have a thickness of 0.2 mm or more, a width of 0.2 mm or more, and a length of 0.3 to 10 mm. When divided into surface layers, the particle shape of the surface layer is more preferably 0.2 to 1.0 mm in thickness and 2.5 to 10 mm in length,
The particle shape of the inner layer preferably has a thickness of 0.2 to 0.5 mm and a length of 2 mm or more.
【００１３】低比重パーティクルと中・高比重パーティ
クルとの配合物には一般的な接着剤が用いられ、これら
の接着材としては、例えば家具、造作材用のパーティク
ルボードであればユリア樹脂等を用いることができ、ま
た建築用であればメラミンユリア、メラミン、フェノー
ル、イソシアネート系樹脂接着剤を用いることができ、
用途に応じて選ぶことができる。接着剤量は８〜１５重
量％〔（接着剤量／パーティクル全乾量）×１００〕が
望ましく、特に内層と表層に分けた場合には表層の接着
剤量が１０重量％以上で、内層の接着剤量が８重量％以
上であることが望ましく、全体として９重量％以上であ
ること望ましい。また表層と内層との比率は１：１〜
１：４の範囲であることが望ましい。A general adhesive is used for the mixture of the low specific gravity particles and the medium and high specific gravity particles. Examples of such adhesives include urea resin and the like for a particle board for furniture and construction materials. Melamine urea, melamine, phenol, isocyanate resin adhesives can be used for construction purposes,
Can be selected according to the application. The amount of the adhesive is desirably 8 to 15% by weight [(adhesive amount / total dry amount of particles) × 100]. Particularly, when the inner layer and the surface layer are divided, the amount of the adhesive in the surface layer is 10% by weight or more, The amount of the adhesive is desirably 8% by weight or more, and desirably 9% by weight or more as a whole. The ratio between the surface layer and the inner layer is 1: 1 to 1
It is desirable that the ratio be in the range of 1: 4.
【００１４】上記構成でフォーミングしたものを圧締し
た後のパーティクルボードの比重は０．７以上であるこ
とが重要であり、比較的荒いパーティクル（長さ２mm以
上）を表層に使用する場合は比重が０．７でよいが、比
較的細かいパーティクル（長さ２mm未満）を使用する場
合は比重が０．７５以上であることが望ましい。高強度
パーティクルボードの厚みは、軽量性と強度を考慮した
場合、９〜３０mmであることが望ましい。[0014] It is important that the specific gravity of the particle board after the formed one is pressed is 0.7 or more, and when relatively coarse particles (length 2 mm or more) are used for the surface layer, the specific gravity is large. May be 0.7, but when relatively fine particles (less than 2 mm in length) are used, the specific gravity is desirably 0.75 or more. The thickness of the high-strength particle board is desirably 9 to 30 mm in consideration of lightness and strength.
【００１５】高強度パーティクルボードを更に強化する
ために、表層に強化繊維を含有させ、又は強化繊維シー
ト等を設けることが望ましい。強化繊維としては、ポリ
エチレン、ポリプロピレン、アクリル、ビニロン、ナイ
ロン、フェノール、エポキシ、レーヨン等の合成繊維、
ガラス繊維、鉱石繊維、金属繊維（鉄、アルミナ、
銅）、シリカ繊維、炭素繊維、アラミド繊維、ボロン繊
維、ケプラー繊維、ＳＩＣ繊維等の無機繊維、或いは特
殊な強化繊維を挙げることができる。また、強化繊維の
含有量は、パーティクルに対して１０重量％以上である
ことが好ましい。[0015] In order to further strengthen the high-strength particle board, it is desirable to incorporate a reinforcing fiber in the surface layer or to provide a reinforcing fiber sheet or the like. As the reinforcing fibers, synthetic fibers such as polyethylene, polypropylene, acrylic, vinylon, nylon, phenol, epoxy, rayon,
Glass fiber, ore fiber, metal fiber (iron, alumina,
Copper), silica fibers, carbon fibers, aramid fibers, boron fibers, Kepler fibers, inorganic fibers such as SIC fibers, or special reinforcing fibers. Further, the content of the reinforcing fibers is preferably 10% by weight or more based on the particles.
【００１６】また、本発明に係る高強度パーティクルボ
ードの製造方法は、低比重パーティクルと中・高比重パ
ーティクルとを上記含有率とし、接着剤を適宜量塗布し
て圧締してフォーミングを行う。圧締における圧縮比は
１．５以上であり、望ましくは１．５〜２である。この
ようにフォーミングしたパーティクルマットを熱圧する
ことにより、本発明の高強度パーティクルボードを得る
ことができる。以上の如く構成された高強度パーティク
ルボードでは、後述する実施例からも明らかなように、
高強度で高剛性があり、且つ高寸法安定性も見られる。
また、端材や廃材等の使用が可能なので材料調達面にお
いても有利である。In the method for producing a high-strength particle board according to the present invention, the low specific gravity particles and the medium and high specific gravity particles are set to the above-mentioned contents, and an appropriate amount of an adhesive is applied and pressed to form. The compression ratio in the pressing is 1.5 or more, preferably 1.5 to 2. By hot pressing the thus formed particle mat, the high strength particle board of the present invention can be obtained. In the high-strength particle board configured as described above, as is clear from the examples described later,
High strength, high rigidity, and high dimensional stability.
In addition, since scrap materials and waste materials can be used, it is advantageous in terms of material procurement.
【００１７】[0017]
【実施例】以下、本発明に係る高強度パーティクルボー
ド及びその製造方法の実施例を比較例と比較しながら説
明する。尚、本発明は以下の実施例に限るものではな
い。上述した製造方法に基づいて、図１に示す如く表
層：内層＝４０：６０とし、材料として低比重パーティ
クル（ピンクサテン：全燥比重が０．３５以下）及び中
・高比重パーティクル（レッドメランティー：全燥比重
が０．４以上）を用い、また表層にはパーティクル形状
の厚さ０．２〜０．５mm×巾０．５〜１．５mm×長さ
２．５〜５mmのものを用い、内層にはパーティクル形状
の厚さ０．２〜０．５mm×巾１．５mm×長さ２mm以上の
ものを用いた。接着剤としてメラミン・ユリア共縮合樹
脂を塗布量を平均１０重量％とし、圧締条件を２．５分
間、初期４０Ｋｇ／cm2 とした。そして、上記条件の下
で表１、及び表２に示す低比重パーティクルと中・高比
重パーティクルの配合比及び設定比重となるように実施
例１〜４及び比較例１〜３のパーティクルボードを製造
した。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a high-strength particle board and a method for manufacturing the same according to the present invention will be described in comparison with comparative examples. The present invention is not limited to the following embodiments. Based on the above-described manufacturing method, as shown in FIG. 1, the surface layer: the inner layer = 40: 60, and as the material, low specific gravity particles (pink satin: total dry specific gravity of 0.35 or less) and medium / high specific gravity particles (red melanty) : The specific gravity is 0.4 or more) and the surface layer has a particle shape having a thickness of 0.2 to 0.5 mm x a width of 0.5 to 1.5 mm x a length of 2.5 to 5 mm. For the inner layer, a particle shape having a thickness of 0.2 to 0.5 mm, a width of 1.5 mm and a length of 2 mm or more was used. The coating amount of a melamine-urea co-condensation resin was set to an average of 10% by weight as an adhesive, and the pressing conditions were 2.5 minutes and the initial pressure was 40 kg / cm 2 . Then, under the above conditions, the particle boards of Examples 1 to 4 and Comparative Examples 1 to 3 were manufactured so that the mixing ratio and the set specific gravity of the low specific gravity particles and the medium / high specific gravity particles shown in Tables 1 and 2 were obtained. did.
【００１８】更に、実施例５として、表層にはパーティ
クル形状の厚さ０．２〜０．５mm×巾０．２〜０．５mm
×長さ０．３〜０．５mmのものを用いた以外、実施例１
と同様に表１の配合条件でパーティクルボードを作製し
た。Furthermore, in Example 5, the surface layer has a particle shape thickness of 0.2 to 0.5 mm × width of 0.2 to 0.5 mm.
X Example 1 except that a length of 0.3 to 0.5 mm was used.
In the same manner as in Example 1, a particle board was produced under the compounding conditions shown in Table 1.
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【表２】 [Table 2]
【００２１】また各実施例及び比較例の曲げ特性、耐水
性、吸水厚膨潤率他、剥離強度、木ネジ保持力及び実比
重の評価を行った。その結果を表３及び表４に示した。
尚、各評価試験は、ＪＩＳＡ５９０８に準ずる。The bending properties, water resistance, water absorption thickness swelling ratio, peel strength, wood screw holding power and actual specific gravity of each of the examples and comparative examples were evaluated. The results are shown in Tables 3 and 4.
In addition, each evaluation test conforms to JISA5908.
【００２２】[0022]
【表３】 [Table 3]
【００２３】[0023]
【表４】 [Table 4]
【００２４】実施例１のボードと比較例１のボードを比
べた場合、略ボード比重が等しいが、実施例の曲げ性能
は、曲げ強度（ＭＯＲ）及び曲げ剛性（ＭＯＥ）が高
い。これは低比重パーティクルが全体の２５重量％含ま
れるからと解せられる。しかし、逆に比較例２のボード
に見られるように、低比重パーティクルが１００重量％
まで配合されると耐水性能の著しい低下が見られる。ま
た、実施例１〜４のボードと比較例３のボードを比べた
場合、実施例のボードの曲げ強度は全て優れているのに
対して比較例３のボードは劣る。従って、曲げ性能、特
に曲げ剛性を高めるためにはボードの実比重０．７以上
であることが重要である。更に、実施例５に見られるよ
うに、表層に細かいパーティクルが存在しても強度を発
現していることが判る。When the board of Example 1 is compared with the board of Comparative Example 1, although the board specific gravities are substantially equal, the bending performance of the Example is high in bending strength (MOR) and bending stiffness (MOE). It is understood that this is because low specific gravity particles are contained in 25% by weight of the whole. However, conversely, as seen in the board of Comparative Example 2, 100% by weight of low specific gravity particles
When it is blended up to a maximum, a remarkable decrease in water resistance is observed. When the boards of Examples 1 to 4 are compared with the board of Comparative Example 3, the boards of Example 3 are all excellent in bending strength, but the board of Comparative Example 3 is inferior. Therefore, it is important that the actual specific gravity of the board is 0.7 or more in order to increase the bending performance, particularly the bending rigidity. Furthermore, as seen in Example 5, it can be seen that the strength is exhibited even when fine particles exist in the surface layer.
【００２５】[0025]
【発明の効果】本発明に係る高強度パーティクルボード
では、ボード自身の厚みが薄く、高強度、高剛性、及び
耐水性があり、しかも材料の調達設備面でも有利であ
る。The high strength particle board according to the present invention has a small thickness of the board itself, has high strength, high rigidity, and water resistance, and is advantageous in terms of equipment for procuring materials.
【図１】本実施例の高強度パーティクルボードの断面図
である。FIG. 1 is a sectional view of a high-strength particle board of the present embodiment.
１、３ 表層 ２ 内層 1, 3 surface layer 2 inner layer
Claims (4)
（チップ）と比重０．４以上の中・高比重パーティクル
との含有比が３：１〜１：３の範囲にあり、且つ圧締成
形後の比重が０．７以上であることを特徴とする高強度
パーティクルボード。1. The content ratio of low specific gravity particles (chips) having a specific gravity of less than 0.4 to medium / high specific gravity particles having a specific gravity of 0.4 or more is in a range of 3: 1 to 1: 3, and press forming. A high-strength particle board having a specific gravity of 0.7 or more.
層として形成されていることを特徴とする請求項１記載
の高強度パーティクルボード。2. The high-strength particle board according to claim 1, wherein the surface layer contains a reinforcing fiber or is formed as a sheet layer.
（チップ）と比重０．４以上の中・高比重パーティクル
とを３：１〜１：３の範囲で含み、且つ圧縮比１．５以
上で圧締して製造することを特徴とする高強度パーティ
クルボードの製造方法。3. A low specific gravity particle (chip) having a specific gravity of less than 0.4 and medium / high specific gravity particles having a specific gravity of 0.4 or more in a range of 3: 1 to 1: 3 and a compression ratio of 1.5 or more. A method for producing a high-strength particle board, comprising:
せ、或いはシート層として形成してあることを特徴とす
る請求項３記載の高強度パーティクルボードの製造方
法。4. The method for producing a high-strength particle board according to claim 3, wherein a reinforcing layer is contained in the surface layer or the sheet layer is formed before the pressing.
Law .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32047893A JP3356514B2 (en) | 1993-12-20 | 1993-12-20 | High strength particle board and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32047893A JP3356514B2 (en) | 1993-12-20 | 1993-12-20 | High strength particle board and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07171808A JPH07171808A (en) | 1995-07-11 |
| JP3356514B2 true JP3356514B2 (en) | 2002-12-16 |
Family
ID=18121896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32047893A Expired - Lifetime JP3356514B2 (en) | 1993-12-20 | 1993-12-20 | High strength particle board and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3356514B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005343045A (en) * | 2004-06-03 | 2005-12-15 | Joto Techno Co Ltd | Molding |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005115705A1 (en) * | 2004-05-31 | 2005-12-08 | Sumitomo Forestry Co., Ltd. | Particle board manufacturing method |
| JP4893594B2 (en) * | 2007-11-13 | 2012-03-07 | パナソニック電工株式会社 | Plate-shaped material and vertical frame for installing an opening door using the same |
| KR101629536B1 (en) * | 2012-09-06 | 2016-06-10 | (주)엘지하우시스 | Pallet and rack using wood polymer/plastic composite |
| CN104786341A (en) * | 2015-03-29 | 2015-07-22 | 桐城市诚信木塑科技材料有限公司 | Production technology for casein-soybean glue bamboo floor |
| JP6448738B1 (en) * | 2017-09-29 | 2019-01-09 | 大建工業株式会社 | Method for producing high-density wood laminate |
-
1993
- 1993-12-20 JP JP32047893A patent/JP3356514B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005343045A (en) * | 2004-06-03 | 2005-12-15 | Joto Techno Co Ltd | Molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07171808A (en) | 1995-07-11 |
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