JP2006035764A - Hollow structure plate and its manufacturing method - Google Patents
Hollow structure plate and its manufacturing method Download PDFInfo
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- JP2006035764A JP2006035764A JP2004222226A JP2004222226A JP2006035764A JP 2006035764 A JP2006035764 A JP 2006035764A JP 2004222226 A JP2004222226 A JP 2004222226A JP 2004222226 A JP2004222226 A JP 2004222226A JP 2006035764 A JP2006035764 A JP 2006035764A
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本発明は、表面材を貼り合わせてなる中空構造板及びその製造方法に関する。 The present invention relates to a hollow structure plate formed by bonding surface materials and a method for manufacturing the same.
近年、中空構造板としては、例えば、円柱状独立空気室を形成したプラスチック中空構造板（プラパール，川上産業製）や、二枚のエンボスシート先端を重ね合わせた中空構造板（ツインコーン，宇部日東化成製）があり、このような中空構造板は、軽量且つ耐水性、断熱性、耐薬品性及諸物性に優れ、養生シート、パレットの下敷き、パーテーションなど種々の用途に使用されている。 In recent years, for example, a plastic hollow structure plate (Pura Pearl, manufactured by Kawakami Sangyo) with a cylindrical independent air chamber, or a hollow structure plate (Twin cone, Ube Nitto) with two embossed sheet tips superimposed Such a hollow structure plate is lightweight and excellent in water resistance, heat insulation, chemical resistance and various physical properties, and is used for various applications such as curing sheets, pallet underlays, and partitioning.
さらに、中空構造板の表面には、機械特性等の向上や意匠性の付与など、目的に応じた機能を付与するために、アルミ等の金属、ガラス繊維や延伸された樹脂繊維等で強化された複合樹脂シートなどの表面材が貼り合わせられることが多い。 Furthermore, the surface of the hollow structural plate is reinforced with metal such as aluminum, glass fiber, stretched resin fiber, etc. in order to provide functions according to the purpose such as improvement of mechanical properties and designability. In many cases, surface materials such as composite resin sheets are bonded together.
従来、このような中空構造板に表面材を貼り合わせる方法としては、（Ａ）表面材自身の表面を溶融させ中空構造板と直接融着させる方法、（Ｂ）中空構造板側の表面を溶融させ表面材を融着させる方法、（Ｃ）接着剤で表面材と中空構造板とを貼り合わせる方法、（Ｄ）超音波融着で表面材と中空構造板とを貼り合わせる方法等がある（例えば、特許文献１参照）。
しかしながら、従来の貼り合わせ方法では、表面材に樹脂を使用する場合に、次のような問題があった。
（Ａ）表面材自身の表面を溶融させ中空構造板と直接融着させる方法では、表面材が固化する際にヒケが生じ、中空構造板の凹模様が浮き出てしまい、意匠性が損なわれてしまう。
（Ｂ）中空構造板側の表面を溶融させ表面材を融着させる方法では、貼り合わせる際に中空構造板の形状が潰れやすく、物性が低下してしまう。
（Ｃ）接着剤で表面材と中空構造板とを貼り合わせる方法では、単一の構造品とならず、リサイクル性が損なわれてしまう。
（Ｄ）超音波融着で表面材と中空構造板とを貼り合わせる方法では、中空構造板のリブあるいは柱状部の根元しか融着せず、又、貼り合わせる際に応力が集中するため中空部が破壊されやすく、物性が低下してしまう。
However, the conventional bonding method has the following problems when a resin is used for the surface material.
(A) In the method of melting the surface of the surface material itself and directly fusing it with the hollow structure plate, sink marks are generated when the surface material is solidified, the concave pattern of the hollow structure plate is raised, and the design properties are impaired. End up.
(B) In the method of melting the surface on the hollow structure plate side and fusing the surface material, the shape of the hollow structure plate is liable to be crushed and the physical properties are deteriorated.
(C) In the method of bonding the surface material and the hollow structure plate with an adhesive, the structure is not a single structure and the recyclability is impaired.
(D) In the method of laminating the surface material and the hollow structure plate by ultrasonic fusion, only the rib or the base of the columnar portion of the hollow structure plate is fused, and the stress is concentrated when the hollow portion is bonded. It is easily destroyed and its physical properties deteriorate.
また、従来の貼り合わせ方法では、バインダやガラス繊維等で強化された複合シートを表面材とする場合に、次のような問題もあった。
（i）表面材を溶融させたとしても表面に浮きが出ている樹脂の量が少なく、そのため、中空構造板と表面材との貼り合わせ強度が低い。その結果、表面材が中空構造板から剥がれやすくなり、諸物性が低くなってしまう。また、表面材を溶融させた際に形が崩れ意匠性が損なわれてしまう。
（ii）曲げ強度等の付与のため使用される延伸された樹脂繊維の積層板や複合シートは,
表面を溶融させ得る程度に加熱すると、軸方向に激しく収縮してしまうため、表面材を中空構造板に貼り合わせることができない。
Further, the conventional bonding method has the following problems when a composite sheet reinforced with a binder or glass fiber is used as a surface material.
(I) Even if the surface material is melted, the amount of the resin floating on the surface is small, and therefore the bonding strength between the hollow structure plate and the surface material is low. As a result, the surface material is easily peeled off from the hollow structure plate, and various physical properties are lowered. In addition, when the surface material is melted, the shape is lost and the design is impaired.
(Ii) Stretched resin fiber laminates and composite sheets used for imparting bending strength, etc.
If the surface is heated to such an extent that it can be melted, the surface material contracts violently in the axial direction, so that the surface material cannot be bonded to the hollow structure plate.
そこで、本発明は、平滑性が良好で、且つ意匠性に優れた、表面材を貼り合わせてなる中空構造板及びその製造方法を提供することを目的とする。 Then, an object of this invention is to provide the hollow structure board which bonded the surface material which has favorable smoothness, and was excellent in the designability, and its manufacturing method.
上記課題を解決するために、本発明は、一対の平行なライナー板の間に多数のボスまたはリブで仕切られた中空部を有する中空構造板の少なくとも一方の表面上に、接着シートを介在させ、且つ表面材を貼り合わせてなることを特徴とする。さらに本発明は、接着シートが、中空構造板及び表面材と相溶性がある素材または同一素材を含有することを特徴とする。さらに本発明は、接着シートの目付が、３００ｇ／ｍ２以下であることを特徴とする。 In order to solve the above problems, the present invention provides an adhesive sheet interposed on at least one surface of a hollow structural plate having a hollow portion partitioned by a large number of bosses or ribs between a pair of parallel liner plates, and It is characterized by being bonded with a surface material. Furthermore, the present invention is characterized in that the adhesive sheet contains a material that is compatible with the hollow structure plate and the surface material or the same material. Furthermore, the present invention is characterized in that the basis weight of the adhesive sheet is 300 g / m 2 or less.
また、本発明は、中空構造板の製造方法であって、中空構造板と表面材との間に溶融した接着シートを介在させ、あるいは中空構造板と表面材との間に介在する接着シートを溶融させ、さらに加圧冷却しながら熱融着することを特徴とする。さらに本発明は、中空構造板及び表面材を、（その融点−１００）℃以上、かつ（その融点−１０）℃以下の温度で予熱することを特徴とする。さらに本発明は、接着シートを、その融点よりも１０〜５０℃高い表面温度で溶融させることを特徴とする。 The present invention also relates to a method for producing a hollow structural plate, wherein a molten adhesive sheet is interposed between the hollow structural plate and the surface material, or an adhesive sheet interposed between the hollow structural plate and the surface material is provided. It is melted and further heat-sealed while being pressurized and cooled. Furthermore, the present invention is characterized in that the hollow structural plate and the surface material are preheated at a temperature of (melting point−100) ° C. or higher and (melting point−10) ° C. or lower. Furthermore, the present invention is characterized in that the adhesive sheet is melted at a surface temperature that is 10 to 50 ° C. higher than its melting point.
本発明によれば、平滑性が良好で、且つ意匠性に優れた、表面材を貼り合わせてなる中空構造板を得ることができる。また、本発明によれば、異種の表面材で強化された中空構造板を得ることもできる。 ADVANTAGE OF THE INVENTION According to this invention, the smooth structure which has favorable smoothness and was excellent in the designability, and which bonds a surface material together can be obtained. Moreover, according to this invention, the hollow structure board reinforced with the different surface material can also be obtained.
以下、添付図面を参照しながら、本発明を実施するための最良の形態について説明する。 The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
図１は、本発明の実施形態における中空構造板を示す断面概略図であり、一対の平行なライナー板の間に多数のボスまたはリブで仕切られた中空部を有する中空構造板１の少なくとも一方の表面上には、表面材２が貼り合わされ、中空構造板１と表面材２との間には、接着シート３が介在している。 FIG. 1 is a schematic cross-sectional view showing a hollow structure plate according to an embodiment of the present invention. At least one surface of a hollow structure plate 1 having a hollow portion partitioned by a large number of bosses or ribs between a pair of parallel liner plates. A surface material 2 is bonded to the top, and an adhesive sheet 3 is interposed between the hollow structure plate 1 and the surface material 2.
このような中空構造板１は、中空構造板１と表面材２との間に溶融した接着シート３を介在させ、あるいは中空構造板１と表面材２との間に介在する接着シート３を溶融させ、さらに加圧冷却しながら熱融着することにより製造できる。以下、中空構造板の製造方法について説明する。 Such a hollow structure plate 1 has a melted adhesive sheet 3 interposed between the hollow structure plate 1 and the surface material 2 or a melted adhesive sheet 3 interposed between the hollow structure plate 1 and the surface material 2. And heat-sealing while further cooling under pressure. Hereinafter, the manufacturing method of a hollow structure board is demonstrated.
＜表面材の貼り合わせ方法＞
中空構造板と表面材との間に両者と相溶性のある接着シートを溶融させ、あるいは溶融した接着シートを用い、ローラーやプレス等で加圧冷却しながら、熱融着を行い中空構造板に表面材を貼り合わせる。この際、中空構造板及び表面材は、熱風、加熱ローラー等で予熱しておく。予熱温度は、高すぎると中空構造板の表面における模様の浮き出しの原因となってしまい、他方、低すぎると貼り合わせ不良となってしまう。このため、中空構造板及び表面材は、その融点未満の最適な温度で予熱することが必要であり、その温度範囲は、（その融点−１００）℃以上かつ（その融点−１０）℃以下、より好ましくは（その融点−８０）℃以上かつ（その融点−２０）℃以下である。他、物性の補強を目的とする表面材は、延伸等による配向の進んだ樹脂よりなるフィルムや繊維で構成された材料が用いられる場合が多く、その場合は材料の収縮を防止する点から、（融点−３０）℃以下を上限として予熱することが好ましい。また、明確な融点を有さない素材の場合も接着性を鑑み、適宜選択される予熱を行うことが好ましい。
<Surface bonding method>
An adhesive sheet that is compatible with both of the hollow structure plate and the surface material is melted, or the melted adhesive sheet is heat-sealed while being pressurized and cooled with a roller or a press to form a hollow structure plate. Bond the surface material. At this time, the hollow structure plate and the surface material are preheated with hot air, a heating roller or the like. If the preheating temperature is too high, the surface of the hollow structure plate will be raised, and if it is too low, bonding will be poor. For this reason, it is necessary for the hollow structure plate and the surface material to be preheated at an optimum temperature below the melting point, and the temperature range is (the melting point−100) ° C. or more and (the melting point−10) ° C. or less, More preferably, (the melting point−80) ° C. or more and (the melting point−20) ° C. or less. In addition, the surface material for the purpose of reinforcing the physical properties is often a material composed of a film or fiber made of a resin having advanced orientation by stretching or the like, in which case, in order to prevent the material from shrinking, (Melting point-30) Preheating is preferably performed with the upper limit being at most 30 ° C. In addition, in the case of a material having no clear melting point, it is preferable to perform preheating appropriately selected in view of adhesiveness.
上記貼り合わせ方法は、中空構造板及び表面材を溶融させるものではないため、表面層にはヒケ等の変形がなく、中空構造板の模様の浮き出しも無い。また、上記貼り合わせ方法によれば、中空構造板が潰れることもないため、物性の低下も無い。さらに、上記貼り合わせ方法によれば、表面材が織布あるいは織布を加工して得られた積層材等の延伸繊維からなるシートであっても、表面材であるシート本体を溶融させる必要がないため、強度等の諸物性を低下させることなく、表面材を中空構造板に貼り合わせることが可能となる。その結果、延伸繊維からなるシートで補強された中空構造板を得ることができる。 Since the bonding method does not melt the hollow structure plate and the surface material, the surface layer has no deformation such as sink marks, and the pattern of the hollow structure plate is not raised. Moreover, according to the said bonding method, since a hollow structure board is not crushed, there is also no fall of a physical property. Furthermore, according to the bonding method, even if the surface material is a woven fabric or a sheet made of drawn fibers such as a laminated material obtained by processing the woven fabric, it is necessary to melt the sheet body that is the surface material. Therefore, the surface material can be bonded to the hollow structure plate without deteriorating various physical properties such as strength. As a result, a hollow structure plate reinforced with a sheet made of drawn fibers can be obtained.
＜接着シート＞
接着シートは、中空構造板と相溶性がある素材が好ましく、特に、リサイクル性、成形性等を考慮すれば、中空構造板と同一素材であることが好ましい。
接着シートの目付は、重すぎると軽量性が損なわれ、冷却固化する際にヒケを起こしやすくなり、中空構造板の表面における模様の浮き出しの原因となってしまう。このため、接着シートの目付は、３００ｇ／ｍ２以下が好ましい。
また、溶融時の表面温度は、高すぎると中空構造板の表面における模様の浮き出しの原因となってしまい、低すぎると貼り合わせが不良となってしまう。このため、溶融時の表面温度は、接着シートの融点から１０〜５０℃高い温度が好ましい。
<Adhesive sheet>
The adhesive sheet is preferably made of a material that is compatible with the hollow structure plate. In particular, in view of recyclability, formability, etc., the same material as the hollow structure plate is preferred.
If the basis weight of the adhesive sheet is too heavy, the lightness is impaired, and it becomes easy to cause sink marks when cooled and solidified, which causes the pattern to be raised on the surface of the hollow structure plate. For this reason, the basis weight of the adhesive sheet is preferably 300 g / m 2 or less.
On the other hand, if the surface temperature at the time of melting is too high, the surface of the hollow structure plate will be raised, and if it is too low, the bonding will be poor. For this reason, the surface temperature at the time of melting is preferably 10 to 50 ° C. higher than the melting point of the adhesive sheet.
＜中空構造板及び表面材＞
中空構造板の原材料となる熱可塑性樹脂としては、特に限定されるものではないが、コスト面、成形性、物性、その他諸特性とのバランスを考慮すると、ポリプロピレンが好ましい。また、中空構造板の剛性を向上させる目的で、フィラーを添加しても良い。副原料となるフィラーとしては特に制限されるものではないが、コスト面、成形性、取り扱い等とのバランスを考慮すると、タルク、炭酸カルシウムが好ましい。
<Hollow structure plate and surface material>
The thermoplastic resin used as the raw material for the hollow structure plate is not particularly limited, but polypropylene is preferable in consideration of the balance with cost, moldability, physical properties, and other characteristics. Moreover, you may add a filler in order to improve the rigidity of a hollow structure board. Although it does not restrict | limit especially as a filler used as an auxiliary | assistant raw material, a talc and a calcium carbonate are preferable when the balance with cost aspect, a moldability, handling, etc. is considered.
一方、表面材の原料は、接着シートと相溶性がある、若しくは相溶性のあるものが貼り合わされたシートであれば特に制限はないが、成形性、リサイクル性を考慮すると中空構造板と同一素材であることが好ましい。 On the other hand, the raw material of the surface material is not particularly limited as long as it is compatible with the adhesive sheet or is a sheet in which compatible materials are bonded together, but considering the moldability and recyclability, the same material as the hollow structure plate It is preferable that
＜接着シート及び中空構造板，表面材の組み合わせ＞
接着シート及び中空構造板，表面材の組み合わせとしては、次のような組み合わせが好ましい。
すなわち、表面材と中空構造板が同一素材である場合は、接着シートはこれらと同一素材とすることが好ましい。また、表面材と中空構造板が同一素材であるが、例えばポリエチレンやポリプロピレンのように極性がなく、接着性に乏しい材料である場合は、接着性を向上させるために接着シートにマレイン酸やイタコン酸等で酸変成した樹脂等を使用してもよい。
<Combination of adhesive sheet, hollow structure plate and surface material>
As a combination of the adhesive sheet, the hollow structure plate, and the surface material, the following combinations are preferable.
That is, when the surface material and the hollow structure plate are made of the same material, the adhesive sheet is preferably made of the same material. In addition, if the surface material and the hollow structure plate are the same material, but are not polar and have poor adhesive properties such as polyethylene or polypropylene, maleic acid or itacone is added to the adhesive sheet to improve the adhesiveness. A resin that has been acid-modified with an acid or the like may be used.
一方、表面材と中空構造板が同一素材でない場合、例えば中空構造板がポリプロピレンで、表面材がポリスチレン、ＡＢＳ、ポリアミド、ポリエチレンテレフタレート、ポリカーボネート等である場合、接着シートに上記のような酸変性樹脂等を使用もよいし、ポリマーアロイ（ポリプロピレン・ポリスチレンアロイ、ポリプロピレン・ＡＢＳアロイ、ポリプロピレン・ポリアミドアロイ、ポリプロピレン・ポリエチレンテレフタレートアロイ、ポリプロピレン・ポリカーボネートアロイ等）を使用してもよい。 On the other hand, when the surface material and the hollow structure plate are not the same material, for example, when the hollow structure plate is polypropylene and the surface material is polystyrene, ABS, polyamide, polyethylene terephthalate, polycarbonate, etc., the acid-modified resin as described above is used for the adhesive sheet. Alternatively, polymer alloys (polypropylene / polystyrene alloy, polypropylene / ABS alloy, polypropylene / polyamide alloy, polypropylene / polyethylene terephthalate alloy, polypropylene / polycarbonate alloy, etc.) may be used.
次に、本発明の実施例について説明する。
本実施例で用いた中空構造板の原材料は以下の通りである。
熱可塑性樹脂；ＥＡ９（日本ポリプロ製，ホモポリプロピレン，融点＝１６５℃，ＭＩ＝０．５）、フィラー；ＭＡＸ２０７０Ｔ（竹原化学工業製，タルクマスターバッチ，タルク含有率７０ｗｔ％）
Next, examples of the present invention will be described.
The raw materials of the hollow structure plate used in this example are as follows.
Thermoplastic resin: EA9 (Nippon Polypro, homopolypropylene, melting point = 165 ° C., MI = 0.5), filler: MAX2070T (manufactured by Takehara Chemical Industries, talc masterbatch, talc content 70 wt%)
上記熱可塑性樹脂９５ｗｔ％、上記フィラー５ｗｔ％の割合でドライブレンドし、これを主原料とした。この主原料を一軸押出機で溶融混練し、Ｔダイにより軟化状態の熱可塑性樹脂シートを押し出した。その後、規則的に円錐台形状ピンが配置されたエンボスローラーによりボス成形された熱可塑性樹脂シート、及びこのエンボスローラーと円柱状ピンが互いに向かい合う形で設置されたエンボスローラーによりボス成形された熱可塑性樹脂シートとを、互いのボスの先端とライナー部とを熱融着することにより一体化させ、総厚み１２ｍｍ、総目付１，０００ｇ／ｍ２の中空構造板を得た。このようにして得られた中空構造板は、突起先端径２ｍｍ，根本径６ｍｍ，突起体間２ｍｍ，高さ６ｍｍであった。 Dry blending was performed at a ratio of 95 wt% of the thermoplastic resin and 5 wt% of the filler, and this was used as a main raw material. This main raw material was melt-kneaded by a single screw extruder, and a thermoplastic resin sheet in a softened state was extruded by a T die. Thereafter, a thermoplastic resin sheet boss-molded by an embossing roller on which frustoconical pins are regularly arranged, and a thermoplastic boss-molded by an embossing roller installed such that the embossing roller and the cylindrical pin face each other. The resin sheet was integrated by heat-sealing the tip of each boss and the liner portion to obtain a hollow structure plate having a total thickness of 12 mm and a total basis weight of 1,000 g / m 2 . The hollow structure plate thus obtained had a protrusion tip diameter of 2 mm, a root diameter of 6 mm, a distance between protrusions of 2 mm, and a height of 6 mm.
＜実施例１＞
本実施例１では、表面材；ＥＡ９（日本ポリプロ製，ホモポリプロピレン，融点＝１６５℃，ＭＩ＝０．５），目付２５０ｇ／ｍ２、接着シート；ＥＡ９（日本ポリプロ製，ホモポリプロピレン，ＭＩ＝０．５），目付２５０ｇ／ｍ２を一軸押出機で溶融混練し、Ｔダイにより溶融状態の熱可塑性樹脂シートを押し出した後、カレンダーロールにてシート状に成形して表面材とした。
<Example 1>
In Example 1, surface material: EA9 (manufactured by Nippon Polypro, homopolypropylene, melting point = 165 ° C., MI = 0.5), basis weight 250 g / m 2 , adhesive sheet; EA9 (manufactured by Nippon Polypro, homopolypropylene, MI = 0.5) and a basis weight of 250 g / m 2 were melt-kneaded by a single screw extruder, and a thermoplastic resin sheet in a molten state was extruded by a T-die, and then formed into a sheet shape by a calender roll to obtain a surface material.
その後、加熱ローラーにて表面材及び中空構造板を１４０℃に予熱し、Ｔダイにより表面温度２００℃の溶融状態にある熱可塑性樹脂シートを中空構造板と表面材との間に押出し、冷却ローラーにて冷却固化させ中空構造板を得た。このようにして得られた中空構造板のボス中央部とライナー部とのヒケの差を観察した。その結果を表１に示す。 Thereafter, the surface material and the hollow structure plate are preheated to 140 ° C. with a heating roller, and a thermoplastic resin sheet in a molten state with a surface temperature of 200 ° C. is extruded between the hollow structure plate and the surface material by a T die, And solidified by cooling to obtain a hollow structure plate. The difference in sink marks between the center portion of the boss and the liner portion of the hollow structure plate thus obtained was observed. The results are shown in Table 1.
＜実施例２＞
本実施例２では、表面材；ＣＵＲＶ（ＢＰ製），融点＝１６５℃，厚み０．６ｍｍ、接着シート；ＥＡ９（日本ポリプロ製，ホモポリプロピレン，融点＝１６５℃，ＭＩ＝０．５），目付７０ｇ／ｍ２からなるロール巻きとなった表面材及び上記中空構造板を１００℃に予熱し、Ｔダイにより表面温度２００℃の溶融状態にある熱可塑性樹脂シートを中空構造板と表面材との間に押し出し、冷却ローラーにて冷却固化させ中空構造板を得た。
<Example 2>
In Example 2, surface material: CURV (manufactured by BP), melting point = 165 ° C., thickness 0.6 mm, adhesive sheet: EA9 (manufactured by Nippon Polypro, homopolypropylene, melting point = 165 ° C., MI = 0.5), basis weight 70 g / m 2 of roll-wrapped surface material and the hollow structure plate are preheated to 100 ° C., and a thermoplastic resin sheet in a molten state at a surface temperature of 200 ° C. is formed by a T-die between the hollow structure plate and the surface material. It was extruded in between and cooled and solidified with a cooling roller to obtain a hollow structure plate.
＜比較例１＞
本比較例１では、表面材；ＥＡ９（日本ポリプロ製，ホモポリプロピレン，融点＝１６５℃，ＭＩ＝０．５），目付２５０ｇ／ｍ２及び上記中空構造板を１００℃で予熱し、実施例１と同一素材からなる表面材の表面温度を２００℃とし、冷却ローラーにて冷却固化させ中空構造板を得た。
<Comparative Example 1>
In this comparative example 1, the surface material: EA9 (manufactured by Nippon Polypro, Homopolypropylene, melting point = 165 ° C., MI = 0.5), basis weight 250 g / m 2 and the above-mentioned hollow structure plate were preheated at 100 ° C. The surface temperature of the surface material made of the same material was set to 200 ° C., and cooled and solidified with a cooling roller to obtain a hollow structure plate.
＜比較例２＞
本比較例２では、表面材；ＣＵＲＶ（ＢＰ製），融点＝１６５℃，厚み０．６ｍｍの表面温度を２００℃で溶融させ、上記中空構造板に貼り合わせようとしたが、激しく収縮してしまい、うまく貼り合わせることができなかった。
<Comparative example 2>
In this comparative example 2, the surface material: CURV (manufactured by BP), melting point = 165 ° C., surface temperature of 0.6 mm thickness was melted at 200 ° C., and it was tried to be bonded to the hollow structure plate. As a result, it was not possible to paste them together.
このようにして得られた中空構造板の表面層の模様を観察し、ボス中央部とライナー部のヒケの差を測定した。その結果を表１に示す。なお、表１における表面層の模様は目視による評価を行い、○は中空構造板の模様が目立たないことを意味し（視認不可）、×は中空構造板の模様が目立つことを意味する（視認可）。また、本発明の実施例におけるボスのヒケを示す断面概略図を図２に示す。
表１に示すように、本発明の実施例１，実施例２によれば、比較例１，比較例２と比べ、表面層の模様が目立つことなく、しかもボスのヒケが生じにくいことがわかる。 As shown in Table 1, according to Example 1 and Example 2 of the present invention, compared to Comparative Example 1 and Comparative Example 2, it can be seen that the pattern of the surface layer is not noticeable and the boss sink is less likely to occur. .
このように、本発明によれば、表面の平滑性が良好で、且つ意匠性に優れた、表面材を貼り合わせてなる中空構造板が得られることがわかる。 Thus, according to the present invention, it can be seen that a hollow structure plate obtained by laminating a surface material with good surface smoothness and excellent design is obtained.
１ 中空構造板
２ 表面材
３ 接着シート
DESCRIPTION OF SYMBOLS 1 Hollow structure board 2 Surface material 3 Adhesive sheet
Claims (6)
前記中空構造板及び前記表面材と相溶性がある素材または同一素材を含有することを特徴とする請求項１に記載の中空構造板。 The adhesive sheet is
The hollow structure board according to claim 1, comprising a material having compatibility with the hollow structure board and the surface material or the same material.
３００ｇ／ｍ２以下であることを特徴とする請求項１又は２に記載の中空構造板。 The basis weight of the adhesive sheet is
It is 300 g / m < 2 > or less, The hollow structure board of Claim 1 or 2 characterized by the above-mentioned.
前記中空構造板と前記表面材との間に溶融した接着シートを介在させ、あるいは前記中空構造板と前記表面材との間に介在する接着シートを溶融させ、さらに加圧冷却しながら熱融着することを特徴とする中空構造板の製造方法。 It is a manufacturing method of the hollow structure board according to any one of claims 1 to 3,
A melted adhesive sheet is interposed between the hollow structural plate and the surface material, or an adhesive sheet interposed between the hollow structural plate and the surface material is melted, and further heat fusion is performed while cooling under pressure. A method for producing a hollow structure plate, comprising:
The method for producing a hollow structure plate according to claim 4 or 5, wherein the adhesive sheet is melted at a surface temperature higher by 10 to 50 ° C than the melting point thereof.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2015123709A (en) * | 2013-12-27 | 2015-07-06 | 宇部エクシモ株式会社 | Manufacturing method of hollow structure plate |
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|---|---|---|---|---|
| JPH06170993A (en) * | 1992-12-03 | 1994-06-21 | Jsp Corp | Composite article of plastic corrugated cardboard and its manufacture |
| JPH06344477A (en) * | 1993-06-03 | 1994-12-20 | Mitsui Toatsu Chem Inc | Laminated molded product and production thereof |
| JPH07329224A (en) * | 1994-06-13 | 1995-12-19 | Ube Ind Ltd | Buffer sheet and manufacture thereof |
| JPH08127091A (en) * | 1994-10-31 | 1996-05-21 | Nissan Motor Co Ltd | Plastic hollow laminate and production thereof |
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2004
- 2004-07-29 JP JP2004222226A patent/JP4512440B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06170993A (en) * | 1992-12-03 | 1994-06-21 | Jsp Corp | Composite article of plastic corrugated cardboard and its manufacture |
| JPH06344477A (en) * | 1993-06-03 | 1994-12-20 | Mitsui Toatsu Chem Inc | Laminated molded product and production thereof |
| JPH07329224A (en) * | 1994-06-13 | 1995-12-19 | Ube Ind Ltd | Buffer sheet and manufacture thereof |
| JPH08127091A (en) * | 1994-10-31 | 1996-05-21 | Nissan Motor Co Ltd | Plastic hollow laminate and production thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015123709A (en) * | 2013-12-27 | 2015-07-06 | 宇部エクシモ株式会社 | Manufacturing method of hollow structure plate |
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