JPH1029258A - Foamed resin core material composite plate - Google Patents
Foamed resin core material composite plateInfo
- Publication number
- JPH1029258A JPH1029258A JP18469196A JP18469196A JPH1029258A JP H1029258 A JPH1029258 A JP H1029258A JP 18469196 A JP18469196 A JP 18469196A JP 18469196 A JP18469196 A JP 18469196A JP H1029258 A JPH1029258 A JP H1029258A
- Authority
- JP
- Japan
- Prior art keywords
- foamed resin
- resin layer
- layer
- core material
- composite plate
- 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.)
- Pending
Links
Landscapes
- Bathtub Accessories (AREA)
- Building Environments (AREA)
- Securing Of Glass Panes Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、発泡樹脂芯材複合
板に関する。さらに詳しくは、発泡樹脂層を芯材とし、
その両表面に金属薄板が接合されてなる、発泡樹脂芯材
複合板に関するものである。The present invention relates to a foamed resin core composite plate. More specifically, the foam resin layer as the core material,
The present invention relates to a foamed resin core material composite plate in which metal thin plates are joined to both surfaces thereof.
【０００２】[0002]
【従来の技術】従来から、ポリオレフィン等の合成樹脂
薄板を芯材とし、その両表面にアルミニウム、鉄、ステ
ンレスなどの金属薄板を接合した複合板が知られている
（例えば、特公昭３９一４７３９号公報参照）。この種
の複合板は、芯材を構成する合成樹脂薄板の性質と、そ
の両表面に接合された金属薄板の性質の双方の性質を有
し、軽量性、耐衝撃性、耐熱性、保温性、加工の容易さ
などにおいて種々の優れた特性を発揮するので、各種建
造物の建材、内外装部材などの用途、その他の分野に応
用され、用途に応じて種々の改良がなされてきた。2. Description of the Related Art Conventionally, there has been known a composite plate in which a synthetic resin thin plate of polyolefin or the like is used as a core material and a metal thin plate of aluminum, iron, stainless steel or the like is joined to both surfaces thereof (for example, Japanese Patent Publication No. 39439/39). Reference). This type of composite board has both the properties of a synthetic resin sheet that forms the core material and the properties of a metal sheet joined to both surfaces, and is lightweight, impact resistant, heat resistant, and heat insulating. Since it exhibits various excellent properties in terms of ease of processing and the like, it has been applied to applications such as building materials of various buildings, interior and exterior members, and other fields, and various improvements have been made depending on the applications.
【０００３】[0003]
【発明が解決しようとする課題】複合板の軽量性、耐衝
撃性、耐熱性、耐久性などを向上させ、より経済的にす
るために、芯材としての合成樹脂薄板を発泡合成樹脂薄
板に代え、発泡合成樹脂芯材と金属板との間に無発泡の
合成樹脂層を設けた複合材が提案されている（特開昭６
３−２４７０３１号公報参照）。しかしながら、芯材と
しての発泡合成樹脂層の発泡倍率が高くなると、発泡樹
脂層の表面は、気泡により凹凸が大きくなり、この大き
な凹凸に影響されて、複合板の金属薄板表面に、蜜柑の
表皮のような細かい凹凸が生じ、製品外観を損ねるとい
う欠点があり、これを改良した外観の優れた複合板が希
求されている。In order to improve the lightweight, impact resistance, heat resistance, durability, etc. of the composite plate and to make it more economical, the synthetic resin thin plate as a core material is replaced with a foamed synthetic resin thin plate. Instead, a composite material in which a non-foamed synthetic resin layer is provided between a foamed synthetic resin core material and a metal plate has been proposed (Japanese Patent Application Laid-Open No. Sho 6
No. 3-247031). However, when the expansion ratio of the foamed synthetic resin layer as a core material is increased, the surface of the foamed resin layer becomes uneven due to bubbles, and is affected by the large unevenness, so that the tangerine skin is formed on the metal sheet surface of the composite board. However, there is a drawback in that fine irregularities such as those described above are generated and the appearance of the product is impaired, and a composite board having an improved appearance and an improved appearance is desired.
【０００４】本発明者らは、かかる状況に鑑み、上記諸
欠点を排除した複合板を提供すべく鋭意検討の結果、本
発明を完成するに至ったものである。すなわち、本発明
の目的は、次の通りである。 １．軽量性、耐衝撃性、耐熱性、保温性、耐久性などに
優れた発泡芯材複合板を提供すること。 ２．表面に凹凸がなく、表面が美麗で外観の優れた複合
板を提供すること。[0004] In view of such circumstances, the present inventors have conducted intensive studies to provide a composite plate that eliminates the above-mentioned disadvantages, and as a result, have completed the present invention. That is, the objects of the present invention are as follows. 1. To provide a foamed core composite board excellent in lightness, impact resistance, heat resistance, heat retention, durability and the like. 2. To provide a composite board having a beautiful surface and excellent appearance without any irregularities on the surface.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、発泡樹脂芯材層の両表面に金属薄板が
接合されてなる複合板において、発泡樹脂芯材層と金属
薄板との間には無発泡状態の樹脂層が介在されてなり、
発泡樹脂芯材層が、発泡倍率２．０〜４．０倍の高発泡
樹脂層を中心層とし、この中心層の両面に、発泡倍率
１．１〜２．０倍の低発泡樹脂層が積層されてなり、か
つ、発泡芯材層全体の発泡倍率が２倍以上にされてなる
ことを特徴とする発泡樹脂芯材複合板を提供する。According to the present invention, there is provided a composite plate comprising a foamed resin core material layer and a metal sheet joined to both surfaces of the foamed resin core material layer. A non-foamed resin layer is interposed between them,
The foamed resin core material layer has a high foamed resin layer having a foaming ratio of 2.0 to 4.0 times as a central layer, and a low foaming resin layer having a foaming ratio of 1.1 to 2.0 times on both sides of the central layer. Provided is a foamed resin core material composite plate which is laminated and has a foaming ratio of at least 2 times the entire foamed core material layer.
【０００６】[0006]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明に係る発泡樹脂芯材複合板（単に「複合板」とい
うことがある）は、芯材層としての発泡樹脂芯材層が高
発泡樹脂層を中心層とし、この中心層の両面に、低発泡
樹脂層が配置されてなる。発泡樹脂芯材層を構成する樹
脂は、発泡して硬質発泡体が得られるものであれば、特
に制限がない。具体的には、ポリエチレン、ポリプロピ
レン、ポリウレタン、ポリスチレン、塩化ビニル系樹
脂、フェノ一ル樹脂、ユリア樹脂、ポリフェニーレンオ
キサイド等が挙げられる。高発泡樹脂層形成用の樹脂、
低発泡樹脂層形成用の樹脂は、同種でも、異なっていて
もよい。中でも、両層ともポリエチレン、ポリプロピレ
ンよりなるのが好ましい。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
In the foamed resin core material composite board according to the present invention (sometimes simply referred to as “composite board”), a foamed resin core material layer as a core material layer has a high foaming resin layer as a central layer, and on both sides of the central layer, A low foam resin layer is provided. The resin constituting the foamed resin core material layer is not particularly limited as long as it can be foamed to obtain a hard foam. Specific examples include polyethylene, polypropylene, polyurethane, polystyrene, vinyl chloride resins, phenol resins, urea resins, and polyphenylene oxide. Resin for forming a highly foamed resin layer,
The resins for forming the low-foaming resin layer may be the same or different. Above all, both layers are preferably made of polyethylene and polypropylene.
【０００７】発泡樹脂芯材の中心層は高発泡樹脂層によ
って構成する。中心層を高発泡樹脂層とするのは、複合
板の軽量化を達成するためである。高発泡樹脂層の発泡
倍率は、２．０〜４．０倍の範囲で選ぶものとする。発
泡倍率が高すぎると実用に耐え得る強度が得られず、ま
た、低すぎると十分に軽量化されず、いずれも好ましく
ない。高発泡樹脂層の好ましい発泡倍率は、３．０〜
４．０倍の範囲である。高発泡樹脂層の厚さは、複合板
の用途、複合板の全体の厚さにもよるが、通常は１．０
〜５．０mmの範囲、特に好ましくは２．０〜４．０mmの
範囲である。[0007] The central layer of the foamed resin core is constituted by a highly foamed resin layer. The reason why the center layer is a highly foamed resin layer is to achieve weight reduction of the composite board. The expansion ratio of the high foam resin layer is selected in the range of 2.0 to 4.0 times. If the expansion ratio is too high, practically strong strength cannot be obtained, and if it is too low, the weight cannot be sufficiently reduced, and neither is preferable. The preferred expansion ratio of the highly foamed resin layer is 3.0 to 3.0.
The range is 4.0 times. The thickness of the high-foaming resin layer depends on the use of the composite board and the overall thickness of the composite board.
To 5.0 mm, particularly preferably 2.0 to 4.0 mm.
【０００８】発泡樹脂芯材は、上記の高発泡樹脂層を中
心層とし、この中心層の両面に、低発泡樹脂層が積層さ
れてなる。低発泡樹脂層は、中心層としての高発泡樹脂
層と、金属薄板との間に介在させる無発泡状態の樹脂層
（単に「無発泡樹脂層」ということがある）との間にあ
り、高発泡樹脂層を構造的に保護する機能と、製品複合
板の表面外観を向上させる機能を果す。低発泡樹脂層の
発泡倍率は、１．１〜２．０倍の範囲で選ぶものとす
る。低発泡樹脂層の発泡倍率が１．１倍未満であると、
複合板を十分に軽量化することができず、発泡倍率が
２．０倍を越えると高発泡樹脂層の表面外観を向上させ
る機能を発揮できないので、いずれも好ましくない。低
発泡樹脂層の好ましい発泡倍率は、１．５〜２．０倍の
範囲である。低発泡樹脂層の厚さは、複合板の用途、複
合板の全体の厚さにもよるが、通常は０．２５〜２．０
mm、特に好ましくは０．２５〜１．５mmの範囲である。[0008] The foamed resin core material has the above-mentioned highly foamed resin layer as a central layer, and a low foamed resin layer laminated on both sides of the central layer. The low-foaming resin layer is located between the high-foaming resin layer as the center layer and the non-foaming resin layer (sometimes simply referred to as “non-foaming resin layer”) interposed between the metal sheet and the high-foaming resin layer. It has the function of structurally protecting the foamed resin layer and the function of improving the surface appearance of the product composite board. The expansion ratio of the low foaming resin layer is selected in the range of 1.1 to 2.0 times. When the expansion ratio of the low-foaming resin layer is less than 1.1 times,
If the composite board cannot be sufficiently reduced in weight, and if the expansion ratio exceeds 2.0 times, the function of improving the surface appearance of the highly foamed resin layer cannot be exhibited, and neither is preferable. The preferred expansion ratio of the low foaming resin layer is in the range of 1.5 to 2.0 times. The thickness of the low-foam resin layer depends on the use of the composite board and the overall thickness of the composite board, but is usually 0.25 to 2.0.
mm, particularly preferably in the range of 0.25 to 1.5 mm.
【０００９】本発明に係る発泡樹脂芯材複合板は、発泡
樹脂芯材層全体（低発泡樹脂層と高発泡樹脂層の双方を
含む）の発泡倍率を２．０倍以上とする。発泡樹脂芯材
層全体の発泡倍率が２．０倍未満であると、得られる複
合板は軽量性に劣るので好ましくない。好ましい発泡倍
率は、２．２倍以上である。また、発泡倍率の上限は特
に制限されるものではないが、複合板の強度低下を防ぐ
ために４０倍以下とするのが望ましい。In the foamed resin core composite board according to the present invention, the expansion ratio of the entire foamed resin core layer (including both the low foamed resin layer and the high foamed resin layer) is 2.0 times or more. If the expansion ratio of the entire foamed resin core material layer is less than 2.0 times, the obtained composite board is inferior in light weight, which is not preferable. The preferred expansion ratio is 2.2 times or more. The upper limit of the expansion ratio is not particularly limited, but is preferably set to 40 times or less in order to prevent a reduction in the strength of the composite plate.
【００１０】なお、ここで発泡樹脂芯材層全体の発泡倍
率とは、次式、すなわち、｛（低発泡樹脂層の発泡倍
率）×（低発泡樹脂層の厚さ）＋（高発泡樹脂層の発泡
倍率）×（高発泡樹脂層の厚さ）｝÷｛（低発泡樹脂層
の厚さ）＋（高発泡樹脂層の厚さ）｝、によって算出さ
れる値を意味する。発泡樹脂芯材層の厚さは、複合板の
厚さに応じて適宜設定されるが、通常は１．５〜６．０
mmの範囲であり、特に好ましくは３．０〜５．０mmの範
囲である。Here, the expansion ratio of the entire foamed resin core layer is represented by the following equation: ｛(expansion ratio of low foaming resin layer) × (thickness of low foaming resin layer) + (high foaming resin layer) Of the high foaming resin layer) {(thickness of the low foaming resin layer) + (thickness of the high foaming resin layer)}. The thickness of the foamed resin core material layer is appropriately set according to the thickness of the composite board, but is usually 1.5 to 6.0.
mm, particularly preferably in the range of 3.0 to 5.0 mm.
【００１１】発泡樹脂芯材層は、上記の通り、高発泡樹
脂層を中心層とし、この中心層の両面に、低発泡樹脂層
が接合された構造である。この発泡樹脂芯材層と金属薄
板とで複合板とするには、両者の間に、無発泡樹脂層を
介在させる。無発泡樹脂層を介在させることにより、高
発泡樹脂層の表面の凹凸が、金属薄板の表面に現れるの
を防ぐことができ、従って、金属薄板の表面には凹凸が
なく、外観の美麗な複合板を得ることができる。As described above, the foamed resin core material layer has a structure in which a high foamed resin layer is used as a central layer, and a low foamed resin layer is bonded to both sides of the central layer. In order to form a composite plate using the foamed resin core material layer and the metal thin plate, a non-foamed resin layer is interposed between the two. By interposing the non-foamed resin layer, irregularities on the surface of the highly foamed resin layer can be prevented from appearing on the surface of the thin metal sheet. You can get a board.
【００１２】無発泡樹脂層を構成する樹脂としては、特
に制限はなく、通常の押出成形法によってフィルムまた
はシートに成形できるものであればよい。具体的には、
ポリエチレン、ポリプロピレンなどのポリオレフィン
類、塩化ビニル系樹脂、ポリアミド類、ポリカーボネー
ト、ポリスチレン、ポリヒドロキシエーテル、酢酸ビニ
ルなどが挙げられる。成形性の観点から、ポリオレフィ
ン類、中でもポリエチレン、ポリプロピレンが特に好ま
しい。無発泡樹脂層の厚さは、余り厚すぎると、積層板
が重くなり、薄すぎると積層板の強度および表面平滑性
の点で問題が生じる。積層板の用途により、０．０１〜
０．３mmの範囲で選ぶの好ましく、特に好ましいのは、
０．０５〜０．ｌmmの範囲である。The resin constituting the non-foamed resin layer is not particularly limited as long as it can be formed into a film or sheet by a usual extrusion molding method. In particular,
Examples thereof include polyolefins such as polyethylene and polypropylene, vinyl chloride resins, polyamides, polycarbonate, polystyrene, polyhydroxyether, and vinyl acetate. From the viewpoint of moldability, polyolefins, particularly polyethylene and polypropylene, are particularly preferred. If the thickness of the non-foamed resin layer is too large, the laminate becomes heavy, and if it is too thin, problems arise in the strength and surface smoothness of the laminate. Depending on the application of the laminate, 0.01 to
Preferably selected in the range of 0.3 mm, particularly preferred is
0.05-0. The range is 1 mm.
【００１３】なお、本発明の無発泡樹脂層、低発泡樹脂
層、高発泡樹脂層製造用の樹脂は、直接光線が照射され
ることがないのでこれに対応する必要はないが、成形加
工の際の加工性、熱劣化などを抑制し、後加工時の加工
性、熱劣化などを抑制する目的で、熱安定剤、可塑剤、
滑剤、充填剤、酸化防止剤などの種々の樹脂添加剤を配
合することができる。The resin for producing the non-foamed resin layer, the low-foamed resin layer, and the high-foamed resin layer according to the present invention is not required to cope with the direct irradiation of the light beam because it is not directly irradiated. For the purpose of suppressing workability at the time of processing, thermal deterioration, etc., and workability at the time of post-processing, heat deterioration, etc., heat stabilizers, plasticizers,
Various resin additives such as lubricants, fillers, and antioxidants can be blended.
【００１４】発泡樹脂芯材層の両面に接合される金属薄
板は、複合板に金属状の外観を賦与し、複合板の耐衝撃
性、耐熱性、耐腐食性、耐久性などを向上させる機能を
果す。金属薄板の素材としては、通常、アルミニウム、
鉄、銅、チタン、錫、ニッケルなどの金属、またはこれ
らを含む合金などが挙げられる。軽量性、経済性、耐腐
食性の観点から、好ましくは、アルミニウムの薄板であ
る。金属薄板の厚さは、厚すぎると得られる複合板が重
くなり、簿すぎると強度および表面平滑性の点で問題が
生じる。複合板を軽量化し、適度な強度を発揮させるた
めには、０．１〜０．５mmの範囲で選ぶの好ましく、特
に好ましいのは０．１〜０．２mmの範囲である。The thin metal plate bonded to both sides of the foamed resin core layer imparts a metallic appearance to the composite plate and functions to improve the impact resistance, heat resistance, corrosion resistance, durability and the like of the composite plate. To fulfill. As the material of the metal sheet, usually, aluminum,
Examples thereof include metals such as iron, copper, titanium, tin, and nickel, and alloys containing these. From the viewpoint of lightness, economy and corrosion resistance, a thin aluminum plate is preferable. If the thickness of the metal thin plate is too large, the obtained composite plate becomes heavy, and if it is too thick, a problem occurs in terms of strength and surface smoothness. In order to reduce the weight of the composite board and to exert an appropriate strength, it is preferable to select the range from 0.1 to 0.5 mm, and particularly preferable to be from 0.1 to 0.2 mm.
【００１５】本発明に係る複合板は、上に説明した発泡
樹脂芯材層、金属薄板および無発泡樹脂層の組合せから
なり、表面側から順に、金属薄板／無発泡樹脂層／低発
泡樹脂層／高発泡樹脂層／低発泡樹脂層／無発泡樹脂層
／金属薄板、のように構成され、一体化されたものであ
る。本発明に係る複合板の全体の厚さは、通常２〜１０
mmでの範囲で選ばれるが、用途によってはこれに限定さ
れない。The composite plate according to the present invention comprises a combination of the above-described foamed resin core material layer, a metal thin plate and a non-foamed resin layer, and in order from the surface side, metal thin plate / non-foamed resin layer / low foamed resin layer. / High-foaming resin layer / low-foaming resin layer / non-foaming resin layer / thin metal sheet and are integrated. The overall thickness of the composite plate according to the present invention is usually 2 to 10
It is selected in the range of mm, but is not limited to this depending on the application.
【００１６】本発明に係る複合板は、各層の積層の順序
が上の順であれば、その製造方法は特に限定されない。
この種複合板の製造法として従来から知られている、連
続方法、回分方法などによることができる。例えば、シ
ート状に成形した発泡樹脂芯材層、無発泡樹脂層を、加
熱圧着などにより金属薄板と接合する方法、発泡プラス
チックの原料混合物と溶融状態の合成樹脂を金属薄板の
間に押出し、加熱圧着する方法などが挙げられる。The manufacturing method of the composite plate according to the present invention is not particularly limited as long as the order of lamination of each layer is ascending.
A continuous method, a batch method, and the like, which are conventionally known as a method for producing this kind of composite plate, can be used. For example, a method in which a sheet-shaped foamed resin core material layer and a non-foamed resin layer are joined to a metal sheet by heat compression, etc., and a raw material mixture of foamed plastic and a synthetic resin in a molten state are extruded between the sheet metals and heated. Compression bonding method and the like can be mentioned.
【００１７】特に、あらかじめ製造した、無発泡樹脂層
／低発泡樹脂層／高発泡樹脂層／低発泡樹脂層／無発泡
樹脂層からなる多層樹脂シートを、連続的に一対の金属
薄板の間に供給し、加熱圧着して複合板とする製造方法
が、連続的生産が可能で工業的には好ましい。複合板の
各層の間は接着剤によって接着してもよく、また、場合
によっては、単に加熱圧着するのみで接合してもよい。
このようにして得られた複合板は、単位面積当たりの重
量が、通常は１．５〜５．５ｋｇ／ｍ2の範囲であり、
極めて軽量であるので取り扱いが容易である。中でも特
に好ましいのは２．０〜３．０ｋｇ／ｍ2の範囲であ
る。In particular, a multi-layer resin sheet made of a non-foamed resin layer / a low-foamed resin layer / a high-foamed resin layer / a low-foamed resin layer / a non-foamed resin layer manufactured in advance is continuously placed between a pair of metal sheets. The method of supplying and heating and pressing to form a composite plate is industrially preferable because continuous production is possible. The respective layers of the composite plate may be bonded with an adhesive, and in some cases, may be bonded by simply heating and pressing.
The composite board thus obtained has a weight per unit area usually in the range of 1.5 to 5.5 kg / m 2 ,
Extremely lightweight and easy to handle. Among them, particularly preferred is a range of 2.0 to 3.0 kg / m 2 .
【００１８】本発明の複合板は、適度な耐衝撃性、高い
断熱性、保温性、耐久性、遮音性を有し、極めて軽量で
ある上、表面が平滑で外観が美麗であるので、各種建造
物の建材、内外装材など、特に、看板、壁材、間仕切り
板、浴檀ふたなどの用途に好適である。なお、これら各
種の用途に使用するに際しては、本発明に係る複合板を
略方形、略長方形、略半円形などの任意形状に切断し、
この切断面から積層板内部（各層の接合面）に水などの
液体の浸入する目的で、または、複合板を取り扱う際に
当たりキズ、ケガなどを防止する目的で、切断端面をビ
ードで保護したり、シールするのが好ましい。ビードま
たはシール材としては、ポリウレタン、ポリスチレン、
塩化ビニル系樹脂、フェノール樹脂、ユリア樹脂などの
樹脂材料や、金属材料（アルミニウムなど）などが挙げ
られる。The composite plate of the present invention has moderate impact resistance, high heat insulation, heat insulation, durability and sound insulation, is extremely lightweight, and has a smooth surface and a beautiful appearance. It is suitable for use as a building material of a building, an interior / exterior material and the like, particularly, a signboard, a wall material, a partition board, a sandalwood lid and the like. When used in these various applications, the composite plate according to the present invention is cut into an arbitrary shape such as a substantially square, a substantially rectangular, and a substantially semicircular shape,
Protect the cut end face with beads for the purpose of infiltration of liquid such as water from the cut surface into the inside of the laminated plate (joining surface of each layer), or to prevent scratches and injuries when handling the composite plate. It is preferable to seal. Beads or sealing materials include polyurethane, polystyrene,
Examples thereof include resin materials such as vinyl chloride resins, phenol resins, and urea resins, and metal materials (such as aluminum).
【００１９】[0019]
【実施例】以下、実施例により本発明をさらに詳細に説
明するが、本発明はその要旨を超えない限り、以下の実
施例に限定されるものではないEXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist of the present invention.
【００２０】［実施例１］まず、厚さ０．０８mmの無発
泡の低密度ポリエチレン（無発泡樹脂層）／厚さ０．９
mm、発泡倍率２．０倍の高密度ポリエチレン（低発泡樹
脂層）／厚さ２．ｌmm、発泡倍率２．４のポリエチレン
（高発泡樹脂層）／厚さ０．９mm、発泡倍率２．０倍の
高密度ポリエチレン（低発泡樹脂層）／厚さ０．０８mm
の無発泡の低密度ポリエチレン（無発泡樹脂層）の５層
構造のシートを調製した。ついで、あらかじめ、無発泡
樹脂層と接する面に、接着剤を塗布した、厚さ０．１５
mmのアルミニウム板２枚の間に、上記５層構造のシート
を供給し、接着剤を介して１６５℃で加熱圧着して、発
泡芯材層全体の発泡倍率が２．２倍の複合板を得た。得
られた複合板の表面は平滑であり、単位面積当たりの重
量は２．５５ｋｇ／ｍ2であつた。Example 1 First, non-foamed low-density polyethylene (non-foamed resin layer) having a thickness of 0.08 mm / thickness of 0.9
1. High-density polyethylene (low foam resin layer) with a foam ratio of 2.0 mm / thickness lmm, polyethylene with a foaming ratio of 2.4 (high foaming resin layer) / thickness 0.9 mm, high density polyethylene with a foaming ratio of 2.0 times (low foaming resin layer) / thickness 0.08 mm
A sheet having a five-layer structure of non-foamed low-density polyethylene (non-foamed resin layer) was prepared. Then, an adhesive was previously applied to the surface in contact with the non-foamed resin layer to a thickness of 0.15.
A sheet having the above-mentioned five-layer structure is supplied between two aluminum plates having a thickness of 2 mm and heated and pressed at 165 ° C. via an adhesive to form a composite plate having a foaming ratio of 2.2 times as a whole of the foamed core material layer. Obtained. The surface of the obtained composite plate was smooth, and the weight per unit area was 2.55 kg / m 2 .
【００２１】［実施例２］実施例１に記載の例におい
て、低発泡樹脂層の発泡倍率を１．５倍に代えた他は同
例におけると同様にして、発泡樹脂芯材層全体の発泡倍
率が２．０倍の複合板を得た。得られた複合板の表面は
平滑であり、単位面積当たりの重量は２．７ｋｇ／ｍ2
であった。Example 2 The same procedure as in Example 1 was repeated, except that the expansion ratio of the low-foaming resin layer was changed to 1.5, and the foaming of the entire foamed resin core layer was repeated. A composite plate having a magnification of 2.0 was obtained. The surface of the obtained composite plate is smooth, and the weight per unit area is 2.7 kg / m 2.
Met.
【００２２】［実施例３］実施例１に記載の例におい
て、低発泡樹脂層の厚さを１．３mmに代えた他は同例に
おけると同様にして、発泡樹脂芯材層全体の発泡倍率が
２．１３倍の複合板を得た。得られた複合板の表面は平
滑であり、単位面積当たりの重量は２．６２ｋｇ／ｍ2
であった。Example 3 The expansion ratio of the entire foamed resin core material layer was the same as in Example 1 except that the thickness of the low foaming resin layer was changed to 1.3 mm. Yielded a composite plate having a ratio of 2.13 times. The surface of the obtained composite plate is smooth, and the weight per unit area is 2.62 kg / m 2.
Met.
【００２３】［実施例４］厚さ２．０mm、発泡倍率２．
８倍の高密度ポリエチレンからな高発泡層の両面に接着
剤で厚さ０．９mm、発泡倍率２．０倍の高密度ポリエチ
レンからなる低発泡層を接着し、発泡芯材層とした。発
泡芯材層の両面に接着剤を介して厚さ０．ｌmmの無発泡
の低密度ポリエチレンを積層し、更に接着剤を介して厚
さ０．１４mmのアルミニウム板を積層した。得られた複
合板の表面は平滑であり、単位面積当たりの重量は２．
３３ｋｇ／ｍ2であった。Example 4 2.0 mm thick, expansion ratio 2.
A low-foaming layer made of high-density polyethylene having a thickness of 0.9 mm and a foaming ratio of 2.0 times was adhered to both sides of a high-foaming layer made of 8 times high-density polyethylene with an adhesive to form a foamed core material layer. The thickness of the foamed core material layer is set to 0. 1 mm of non-foamed low-density polyethylene was laminated, and an aluminum plate having a thickness of 0.14 mm was further laminated via an adhesive. The surface of the obtained composite plate is smooth, and the weight per unit area is 2.
It was 33 kg / m 2 .
【００２４】［比較例１］実施例１に記載の例におい
て、無発泡樹脂層を形成しなかった他は同例におけると
同様にして、複合板を得た。得られた複合板の表面には
発泡樹脂芯材層の気泡により凹凸が表れ、表面平滑性が
劣っていた。Comparative Example 1 A composite plate was obtained in the same manner as in Example 1 except that the non-foamed resin layer was not formed. On the surface of the obtained composite plate, irregularities appeared due to bubbles in the foamed resin core material layer, and the surface smoothness was poor.
【００２５】［比較例２］実施例１に記載の例におい
て、低発泡樹脂層を形成しなかった他は同例におけると
同様にして、複合板を得た。得られた複合板の表面には
発泡樹脂芯材層の気泡により凹凸が表れ、表面平滑性が
劣っていた。Comparative Example 2 A composite plate was obtained in the same manner as in Example 1 except that the low-foaming resin layer was not formed. On the surface of the obtained composite plate, irregularities appeared due to bubbles in the foamed resin core material layer, and the surface smoothness was poor.
【００２６】[0026]
【発明の効果】本発明は、次のような特別に有利な効果
を奏し、その産業上の利用価値は極めて大である。 １．本発明に係る発泡樹脂芯材複合板は、従来の複合板
と同様に高い耐衝撃性、耐熱性、保温性、断熱性、遮音
性を有し、極めて軽量であり、加工性にも優れている。 ２．本発明に係る発泡樹脂芯材複合板は、発泡樹脂芯材
層の気泡による凹凸が複合板の表面に表れず、表面が平
滑で、外観が極めて美麗である。The present invention has the following particularly advantageous effects, and its industrial value is extremely large. 1. The foamed resin core material composite plate according to the present invention has high impact resistance, heat resistance, heat retention, heat insulation, sound insulation, extremely light weight, and excellent workability similarly to the conventional composite plate. I have. 2. In the foamed resin core material composite plate according to the present invention, unevenness due to bubbles in the foamed resin core material layer does not appear on the surface of the composite plate, the surface is smooth, and the appearance is extremely beautiful.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｅ０６Ｂ 3/82 Ｅ０６Ｂ 3/82 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location E06B 3/82 E06B 3/82
Claims (7)
合されてなる複合板において、発泡樹脂芯材層と金属薄
板との間には無発泡状態の樹脂層が介在されてなり、発
泡樹脂芯材層が、発泡倍率２．０〜４．０倍の高発泡樹
脂層を中心層とし、この中心層の両面に、発泡倍率１．
１〜２．０倍の低発泡樹脂層が積層されてなり、かつ、
発泡樹脂芯材層全体の発泡倍率が２倍以上とされてなる
ことを特徴とする発泡樹脂芯材複合板。1. A composite plate in which a metal sheet is joined to both surfaces of a foamed resin core layer, wherein a non-foamed resin layer is interposed between the foamed resin core layer and the metal sheet. The foamed resin core material layer has a high foamed resin layer having a foaming ratio of 2.0 to 4.0 times as a center layer, and a foaming ratio of 1.
1 to 2.0 times low foaming resin layer is laminated, and,
A foamed resin core material composite plate, wherein the expansion ratio of the entire foamed resin core material layer is set to 2 times or more.
厚さが０．１〜１．５mmである請求項１に記載の発泡樹
脂芯材複合板。2. The foamed resin core material composite plate according to claim 1, wherein the thin metal plate is an aluminum plate and has a thickness of 0.1 to 1.5 mm.
mm、無発泡状態の樹脂層の厚さが０．０１〜０．３mmで
ある請求項１に記載の発泡樹脂芯材複合板。3. The foamed resin core material layer has a thickness of 1.5 to 6.0.
The foamed resin core material composite board according to claim 1, wherein the thickness of the resin layer in a non-foamed state is 0.01 to 0.3 mm.
５ｋｇ／ｍ2である請求項１に記載の発泡樹脂芯材複合
板。4. The weight per unit area is from 1.5 to 5.
Foamed resin core composite plate according to claim 1 which is 5 kg / m 2.
が、ポリエチレンまたはポリプロピレンである請求項１
に記載の発泡樹脂芯材複合板。5. The high foaming resin layer and the low foaming resin layer are made of polyethylene or polypropylene.
The foamed resin core material composite plate according to item 1.
記載の発泡樹脂芯材複合板よりなる浴槽ふた。6. A bathtub lid made of the foamed resin core material composite plate according to any one of claims 1 to 5.
記載の発泡樹脂芯材複合板よりなるドア材。7. A door member comprising the foamed resin core material composite plate according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18469196A JPH1029258A (en) | 1996-07-15 | 1996-07-15 | Foamed resin core material composite plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18469196A JPH1029258A (en) | 1996-07-15 | 1996-07-15 | Foamed resin core material composite plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1029258A true JPH1029258A (en) | 1998-02-03 |
Family
ID=16157691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18469196A Pending JPH1029258A (en) | 1996-07-15 | 1996-07-15 | Foamed resin core material composite plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1029258A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005274762A (en) * | 2004-03-23 | 2005-10-06 | Inoac Corp | Sound absorbing material |
| WO2014030584A1 (en) * | 2012-08-21 | 2014-02-27 | シャープ株式会社 | Illumination device, display device, and tv reception device |
| US8722200B2 (en) | 2008-09-09 | 2014-05-13 | Kobe Steel, Ltd. | Laminated plate and composite formed article |
| WO2023195467A1 (en) * | 2022-04-04 | 2023-10-12 | 日本製鉄株式会社 | Resin metal composite panel |
-
1996
- 1996-07-15 JP JP18469196A patent/JPH1029258A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005274762A (en) * | 2004-03-23 | 2005-10-06 | Inoac Corp | Sound absorbing material |
| US8722200B2 (en) | 2008-09-09 | 2014-05-13 | Kobe Steel, Ltd. | Laminated plate and composite formed article |
| WO2014030584A1 (en) * | 2012-08-21 | 2014-02-27 | シャープ株式会社 | Illumination device, display device, and tv reception device |
| WO2023195467A1 (en) * | 2022-04-04 | 2023-10-12 | 日本製鉄株式会社 | Resin metal composite panel |
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