JP4047987B2 - Highly filled foam extrusion molding with filler - Google Patents

Highly filled foam extrusion molding with filler Download PDF

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Publication number
JP4047987B2
JP4047987B2 JP32504898A JP32504898A JP4047987B2 JP 4047987 B2 JP4047987 B2 JP 4047987B2 JP 32504898 A JP32504898 A JP 32504898A JP 32504898 A JP32504898 A JP 32504898A JP 4047987 B2 JP4047987 B2 JP 4047987B2
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Japan
Prior art keywords
net
filler
synthetic resin
extruded
take
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JP32504898A
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JP2000141442A (en
Inventor
眞浩 富島
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Kurashiki Spinning Co Ltd
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Kurashiki Spinning Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、軽量で木質感を有する押出成形体およびその製造方法に関する。
【0002】
【従来の技術】
合成樹脂押出成形体に木粉や無機粉末等のフィラーを充填して、合成樹脂製品とは異なるテクスチャーや外観、あるいは性能を付与する試みは従来から多くなされてきた。この場合、フィラー含有量が多くなるほど、合成樹脂単独製品とはかけ離れた外観や性能を持ったものが得られることが期待できるが、フィラーの配合量が多くなるとともに、引張特性やタフネスのような物性が低下して、実用に耐えるような成形体を得ることは困難であった。またこのような成形品は、メルトテンションが極めて低いため、物性以前の問題として、成形品を安定して製造すること自体が容易ではなかった。発泡成形品の場合は特に困難を伴った。
【0003】
フィラーを高配合量で含有する押出成形体を製造するひとつの方法として、最近、引取ロールを押出成形体の引き取り方向と逆方向に回転させて成形体に抑圧力を加えつつ成形体を引き取る押出成形技術が開発されてきた。特開平8−164551号公報には、木粉を充填した合成樹脂とともに、連続的に押し出される補強材を内部に埋設した押出成形体を製造するに当たり、成形品の板厚を大幅に増すことなく板強度を増すために、押し出された板材に押出し力に抗する抑止力を加えて押出し生地の密度を高くする方法が開示されている。この方法によれば、木粉の高充填による強度低下と成形性の悪化をある程度補って密度の高い成形品を得ることができる。しかし、この方法では密度の低い成形品を得ることはできず、木粉を入れた効果はかなり相殺される。またこの方法では発泡成形品を得ることも困難である。更に、成形体内部に埋設された補強材は十分に伸長した状態でこそ十分に補強効果を発揮するが、押出し物に抑止力を加えることにより、補強材の伸長状態が緩和され、補強作用は十分には発揮されなくなるなどの問題が残る。
【0004】
【発明が解決しようとする課題】
本発明は、多量のフィラーを含有しながら軽量にして木質感を有する押出成形体およびその製造方法を提供することを目的とする。
【0005】
【課題を解決するための手段】
本発明は、フィラーを25〜75重量%含有する低発泡合成樹脂に、両面に貫通する多数の孔を持ち該孔の大きさが1〜3mmである可撓性のネット状物をインサートした比重が0 . 5〜1 . 0である押出成形体に関する。
本発明は、特に上記フィラーの10重量%以上が木粉である押出成形体に関する。
また本発明は、フィラーを25〜75重量%含有する低発泡合成樹脂を押出成形しつつこれに、両面に貫通する多数の孔を持ち該孔の大きさが1〜3mmである可撓性のネット状物を挿入し、引取方向に回転する引取ロールにより引き取ることを特徴とする上記押出成形体の製造方法に関する。詳しくは、本発明は、フィラーを25〜75重量%含有する合成樹脂組成物を低発泡押出成形するにおいて、押出金型に設けられたネット状物挿入口から可撓性のネット状物を連続的に供給して押出金型内でこのネット状物を溶融合成樹脂組成物中に挿入し、ネット状物が挿入された合成樹脂を低発泡させながらサイジングダイを経て低発泡合成樹脂を押出成形し、引取方向に回転する1対または複数対の引取ロールにより引き取ることを特徴とする上記押出成形体の製造方法に関する。
上記本発明の押出成形体は、その内部に、両面に貫通する多数の孔を持つ可撓性のシート状物をインサートしたところに特徴があり、これにより多量のフィラーを含有するにもかかわらず、軽量性を保持したまま安定して連続成形ができ、且つ十分な強度も保持して、木質感を発現することができる。
【0006】
【発明の実施の形態】
本発明の押出成形体は、木質感を出すために、基材原料に多量のフィラーが充填される。フィラーとしては粉状または繊維状の有機または無機フィラーを用いることができる。木粉は木質感を発現するために特に有効であり、無機フィラーは剛性を増すために有効である。このようなフィラーの例としては、木粉、炭酸カルシウム、炭酸マグネシウム、酸化珪素、マイカ、タルク、酸化チタン、石英等の粉末;ウォラストナイト、セピオライト、ゾノトライト、石膏等の針状結晶粉末;ガラス繊維、パルプ等の木材繊維、再生繊維、合成繊維、炭素繊維等の繊維類の粉末や短繊維等が挙げられるが、これら以外にも通常合成樹脂のフィラーとして使用されるものをいずれも使用することができる。これらは1種類を単独で使用してもよいし、2種以上を併用してもよい。
【0007】
本発明の押出成形体にとって特に好ましいフィラーは木粉であり、木粉と他のフィラーとを混合して使用する場合は、木粉がフィラー全体の10重量%以上、特に30重量%以上であることが好ましい。木粉の大きさは、特に限定されるものではないが、好ましくは30メッシュから120メッシュの間のものである。
配合されるフィラーの量は、押出成形体の25〜75重量%、好ましくは30〜60重量%、より好ましくは30〜50重量%である。25重量%より少ないと十分木質感を発揮することができず、一方75重量%より多量に含有されると押出成形が困難となり、また得られた成形体の強度も著しく低くなる。
【0008】
押出成形体の内部にインサートされる、両面に貫通する多数の孔を持つ可撓性シート状物は、このシートの上下にある基材物質がこの孔を通して一体化される形状を有し、また押出ダイス内を通って送り込むことができる程度に耐熱性と可撓性を有するものであればどのような形状および材質のものでもよい。具体的な材質としては、耐熱性の合成高分子、再生または天然のセルロース繊維、ガラス繊維、炭素繊維、アラミド繊維等を用いることができる。
シート状物の孔の大きさは、約1mm〜3mmが好ましく、この大きさはシート状物全体を通して必ずしも同じである必要はないが、強度や比重、または外観の均一性の面から、同程度の大きさからなるものが好ましい。
【0009】
このようなシート状物の例としては、図2に示すように例えばネット状物、孔あきシート、密度の粗い不織布や織布等が挙げられる。可撓性、軽量性および上下の基材物質の一体化性の点で特に好ましいシート状物はネット状のものである。ネットは、繊維をネット状に加工したものでもよいし、合成樹脂から直接ネット状に成形したものでもよい。
【0010】
押出成形体の主体をなす基材原料には、合成樹脂、特に熱可塑性合成樹脂が用いられる。合成樹脂の具体例としては、通常の押出成形で使用される合成樹脂がすべて使用可能であり、ポリエチレン、ポリプロピレン等のポリオレフィン系樹脂、ポリ塩化ビニル樹脂、ハイインパクトポリスチレン樹脂、ABS樹脂等のスチレン系樹脂、ナイロン6、ナイロン66等のポリアミド樹脂、PET等のポリエステル樹脂、ポリカーボネート樹脂、ポリアセタール樹脂、ポリフェニレンエーテル樹脂等を例示することができる。
【0011】
本発明では、これらの合成樹脂は低発泡として押出成形される。低発泡押出は、合成樹脂に発泡剤として熱分解によりガスを発生する熱分解性発泡剤、例えばアゾジカルボンアミドや炭酸アンモニウム、または加熱により気化する低沸点有機溶剤等の気化性発泡剤、例えばブタンや石油エーテル等を練り込んで加熱押出成形する通常の低発泡押出技術によって行うことができる。本発明では、発泡倍率は1.1〜5.0、好ましくは2.0〜3.0の範囲で選ばれる。
【0012】
基材の合成樹脂には、上記のほか、着色剤、熱安定剤、紫外線吸収剤、滑剤、流動化剤、軽量フィラー等の添加剤を必要に応じて配合することができる。
【0013】
本発明の押出成形体は比重が0.5〜1.0、好ましくは0.7〜0.9となるように、発泡倍率、フィラー配合量、フィラーの種類およびシート状物の形状、材質および目付量が選択される。密度が0.5より小さくなると成形体としての機械的特性が低くなりすぎ、1.0より高くなると本発明の特徴である軽量性が失われる。
【0014】
本発明の押出成形体の製造方法を押出成形状況を模式的に示す図1を用いて説明する。
押出成形体(1)は、インサート押出金型(5)を用いて、挿入口(6)からネットのようなシート状物(2)を挿入し、該シート状物をサイジングダイ(7)を経て押出口(8)から押出すと同時に、押出スクリューで混練された低発泡基材(3)を注入口(4)から注入し、該基材を押出口(8)から、該シート状物が基材にインサートされた状態で共押出成形し、両者を一体化させることによって製造される。この場合、シート状物(2)は通常は可撓性を有するため、金型(5)に挿入するに際しては、適度な張力を印加するのが好ましい。また、シート状物(2)は、金型に挿入する前に、低発泡基材(3)に対して良好な相溶性を示す樹脂、例えば、低発泡基材(3)としてポリ塩化ビニル樹脂を用いるときには、塩化ビニル−ウレタン共重体樹脂等でコーティングし、さらに、予熱(例えば100〜200℃)しておくのが両者の接着性向上等の観点から好ましい。
【0015】
基材とシート状物とが一体化されて押出口から共押出された押出成形体は、一対または複数対の引き取りロール(9)でその形状を保持しながら引き取られる。引き取りロールは押出成形体に抑圧力が加わらないように順方向に、且つその回転速度が押出口からの押出速度と同じ表面速度または若干早い速度で回転するように設定される。
【0016】
なお、所望により、押出成形体の表面に基材樹脂と相溶性のある耐候性樹脂を被覆する場合は、基材樹脂の全面または一部が被覆されるような状態で、シート状物(2)と低発泡基材(3)を、耐候性樹脂と共に同時に押出成形することによって可能である。この目的で使用できる耐候性樹脂としては、メタクリル樹脂、メタアクリル−ブチルアクリレート共重合樹脂、スチレン−メタクリル共重合樹脂、スチレン−アクリロニトリル−アクリルゴム樹脂が例示できる。さらに、低発泡基材(3)の表面の全面または一部または耐候性樹脂層の表面の全面または一部に、所望の流れ模様を同時成形により加飾させてもよい。
【0017】
本発明による押出成形体(1)の断面形態、即ち押出口(8)の断面形態は特に限定的ではなく、使用目的に応じて適宜選定すればよい。
【0018】
【実施例】
以下、本発明を実施例によってさらに説明する。
実施例1〜3
基材樹脂組成物、フィラー、シート状物として、表1に記載したものを用い、図1および上記で説明した方法によりシート状物をインサートした高フィラー充填低発泡押出成形体を製造した。
表1中、シート状物としては塩化ビニル-ウレタン共重合体樹脂エマルジョンで表面処理した60mm幅のガラス繊維織物状ネットを使用する。当該ネットの主構成要素であるガラスロービングは、1本当たり厚み0.4mm、幅2mmのものを使用する。隣り合うロービングの間隔は約2mmである。
また、木粉は、100メッシュ通過のものを用い、無機フィラーはタルクを用いた。発泡剤は、重炭酸ナトリウムを用いた。
なお、ガラス繊維織物状ネットは、金型に挿入する直前において、表面温度が150〜170℃になるように赤外線ヒーターまたは熱風ヒーターを用いて予備加熱する。
以上の配合を用い、45mmのコニカルツイン押出機を使って、幅80mm、厚さ10mmの押出成形体を得た。
【0019】
製造された押出成形体の比重および成形性についての評価結果を表1に示した。
【表1】

Figure 0004047987
【0020】
比較例 1〜3
ガラス繊維織物状ネットを使用しない以外は、実施例1〜3と同様の条件により押出成形を行った。その結果を表1に示す。
【0021】
【発明の効果】
本発明の押出成形体は、建築材料等として好まれる木質感を有し、且つ軽量性と使用およびハンドリングに耐える強度を有するため、建築用板、土木用資材、景観材料、水処理材、車両資材および運搬資材(パレット等)として汎用することができる。本発明の押出成形体はその内部に、両面に貫通する多数の孔を持つ可撓性シート状物が挿入されているため、木粉等のフィラーを多量に含有するにもかかわらず安定に製造することができる。
【図面の簡単な説明】
【図1】 本発明の押出成形体の製造方法を示す概念図。
【図2】 本発明で使用できるシート状物の一例。
(a)織物状ネット、
(b)ネット状成形体、
(c)孔あきシート。
【符号の説明】
1:シート状物を挿入した押出成形体、
2:シート状物、
3:発泡基材、
4:低発泡基材注入物、インサート押出金型、
5:インサート押出金型、
6:シート状物挿入口、
7:サイジングダイ
8:引取ロール。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a light-weight extruded product having a wood texture and a method for producing the same.
[0002]
[Prior art]
Many attempts have been made in the past to provide a texture, appearance, or performance different from that of a synthetic resin product by filling a synthetic resin extruded body with a filler such as wood powder or inorganic powder. In this case, as the filler content increases, it can be expected that a product having an appearance and performance far from that of a single synthetic resin product will be obtained. However, as the filler content increases, the tensile properties and toughness It has been difficult to obtain a molded article having physical properties that can withstand practical use. Moreover, since such a molded article has extremely low melt tension, as a problem before the physical properties, it has been difficult to stably produce the molded article itself. In the case of foam-molded products, it was particularly difficult.
[0003]
As one method for producing an extrusion molded body containing a high amount of filler, recently, the take-up roll is rotated in the direction opposite to the take-up direction of the extrusion molded body, and the molded body is pulled out while applying pressure to the molded body. Molding techniques have been developed. In JP-A-8-164551, in manufacturing an extruded product in which a reinforcing material continuously extruded is embedded together with a synthetic resin filled with wood powder, the thickness of the molded product is not significantly increased. In order to increase the board strength, a method of increasing the density of the extruded dough by applying a deterring force against the extrusion force to the extruded board material is disclosed. According to this method, it is possible to obtain a molded product having a high density by making up for a certain degree of strength reduction and deterioration of moldability due to high filling of wood powder. However, this method cannot obtain a molded product having a low density, and the effect of adding wood flour is considerably offset. In addition, it is difficult to obtain a foam molded product by this method. Furthermore, the reinforcing material embedded in the molded body exhibits a sufficient reinforcing effect when it is sufficiently stretched, but by applying a deterrent to the extrudate, the stretched state of the reinforcing material is relaxed, and the reinforcing action is Problems such as not being fully demonstrated remain.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide an extruded product having a wood texture while containing a large amount of filler, and a method for producing the same.
[0005]
[Means for Solving the Problems]
The present invention relates to low foaming synthetic resin containing a filler 25-75% by weight, the size of the pores Chi lifting a large number of holes penetrating the both sides is inserted a flexible net-like material is 1~3mm specific gravity 0. about 5-1. extrudate is 0.
The present invention particularly relates to an extruded product in which 10% by weight or more of the filler is wood flour.
The present invention, in which while extruding low foaming synthetic resin containing a filler 25-75% by weight, flexible size of the pores Chi lifting a large number of holes penetrating the both sides is 1~3mm The present invention relates to a method for producing the extruded product, wherein the net- like material is inserted and taken up by a take-up roll rotating in the take-up direction. Specifically, in the present invention, when a synthetic resin composition containing 25 to 75% by weight of a filler is subjected to low foam extrusion molding, a flexible net- like material is continuously provided from a net- like material insertion port provided in an extrusion die. to the net-like material in the supply to the extrusion die was inserted into the molten synthetic resin composition, low foaming synthetic resin extruded through a sizing die while low foaming synthetic resin net-like material is inserted In addition, the present invention relates to a method for producing the above-described extruded product, wherein the extruded product is taken up by one or more pairs of take-up rolls rotating in the take-up direction.
The extruded product of the present invention is characterized in that a flexible sheet-like material having a large number of holes penetrating both sides is inserted in the inside thereof, and thus contains a large amount of filler. In addition, it is possible to stably perform continuous molding while maintaining lightness, and to maintain a sufficient strength and to express a wood texture.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In the extruded product of the present invention, the base material is filled with a large amount of filler in order to give a wooden texture. As the filler, a powdery or fibrous organic or inorganic filler can be used. Wood flour is particularly effective for expressing wood texture, and inorganic filler is effective for increasing rigidity. Examples of such fillers include powders of wood powder, calcium carbonate, magnesium carbonate, silicon oxide, mica, talc, titanium oxide, quartz, etc .; acicular crystal powders such as wollastonite, sepiolite, zonotlite, gypsum; glass Examples include fiber, pulp fiber and other wood fibers, recycled fibers, synthetic fibers, carbon fibers and other powders, short fibers, etc. In addition to these, any of those normally used as synthetic resin fillers are used. be able to. These may be used individually by 1 type and may use 2 or more types together.
[0007]
A particularly preferred filler for the extruded product of the present invention is wood flour. When wood flour and other fillers are mixed and used, the wood flour is 10% by weight or more, particularly 30% by weight or more of the whole filler. It is preferable. The size of the wood flour is not particularly limited, but is preferably between 30 and 120 mesh.
The amount of the filler to be blended is 25 to 75% by weight, preferably 30 to 60% by weight, more preferably 30 to 50% by weight of the extruded product. If the amount is less than 25% by weight, the wood texture cannot be sufficiently exhibited. On the other hand, if the amount is more than 75% by weight, extrusion molding becomes difficult, and the strength of the obtained molded product is remarkably lowered.
[0008]
A flexible sheet having a large number of holes penetrating on both sides, inserted into the extruded body, has a shape in which the base material above and below the sheet is integrated through the holes, and Any shape and material may be used as long as they have heat resistance and flexibility to the extent that they can be fed through the extrusion die. Specific examples of materials that can be used include heat-resistant synthetic polymers, regenerated or natural cellulose fibers, glass fibers, carbon fibers, and aramid fibers.
The size of the hole in the sheet-like material is preferably about 1 mm to 3 mm, and this size does not necessarily have to be the same throughout the entire sheet-like material, but is about the same in terms of strength, specific gravity, or appearance uniformity. The thing which consists of the magnitude | size of is preferable.
[0009]
Examples of such a sheet-like material include a net-like material, a perforated sheet, a non-woven fabric having a high density, a woven fabric, and the like, as shown in FIG. A particularly preferable sheet-like material is a net-like material in view of flexibility, light weight, and integration of upper and lower substrate materials. The net may be a fiber processed into a net shape, or may be formed directly from a synthetic resin into a net shape.
[0010]
Synthetic resins, particularly thermoplastic synthetic resins, are used as the base material that forms the main body of the extruded product. Specific examples of synthetic resins include all synthetic resins used in normal extrusion molding, polyolefin resins such as polyethylene and polypropylene, styrene resins such as polyvinyl chloride resin, high impact polystyrene resin, and ABS resin. Examples thereof include resin, polyamide resin such as nylon 6 and nylon 66, polyester resin such as PET, polycarbonate resin, polyacetal resin, and polyphenylene ether resin.
[0011]
In the present invention, these synthetic resins are extruded as low foam. Low foam extrusion is a pyrolytic foaming agent that generates gas by thermal decomposition as a foaming agent in a synthetic resin, such as azodicarbonamide or ammonium carbonate, or a vaporizable foaming agent such as a low-boiling organic solvent that vaporizes by heating, such as butane. Or a conventional low foam extrusion technique in which petroleum ether or the like is kneaded and heated and extruded. In the present invention, the expansion ratio is selected in the range of 1.1 to 5.0, preferably 2.0 to 3.0.
[0012]
In addition to the above, additives such as a colorant, a heat stabilizer, an ultraviolet absorber, a lubricant, a fluidizing agent, and a lightweight filler can be added to the base synthetic resin as necessary.
[0013]
The extrusion molded article of the present invention has a foaming ratio, a filler blending amount, a filler type, a sheet-like shape, material, and material so that the specific gravity is 0.5 to 1.0, preferably 0.7 to 0.9. A basis weight is selected. If the density is less than 0.5, the mechanical properties of the molded article are too low, and if it is higher than 1.0, the lightness characteristic of the present invention is lost.
[0014]
The manufacturing method of the extrusion molding of this invention is demonstrated using FIG. 1 which shows typically an extrusion molding condition.
The extruded product (1) is inserted into a sheet-like material (2) such as a net from an insertion port (6) using an insert extrusion mold (5), and the sizing die (7) is inserted into the sheet-like material. At the same time as the extrusion from the extrusion port (8), the low foam base material (3) kneaded by the extrusion screw is injected from the injection port (4), and the base material is injected from the extrusion port (8) to the sheet-like material. Is manufactured by co-extrusion molding in a state of being inserted into the base material and integrating the two. In this case, since the sheet-like material (2) is usually flexible, it is preferable to apply an appropriate tension when inserted into the mold (5). In addition, the sheet-like material (2) is a resin showing good compatibility with the low foam base material (3) before being inserted into the mold, for example, a polyvinyl chloride resin as the low foam base material (3). Is preferably coated with a vinyl chloride-urethane copolymer resin or the like, and further preheated (for example, 100 to 200 ° C.) from the viewpoint of improving the adhesion between them.
[0015]
The extruded body in which the base material and the sheet-like material are integrated and co-extruded from the extrusion port is taken up while maintaining the shape by a pair or a plurality of pairs of take-up rolls (9). The take-up roll is set so as to rotate in the forward direction so that no pressure is applied to the extruded product, and to rotate at the same surface speed as the extrusion speed from the extrusion port or at a slightly higher speed.
[0016]
If desired, when the weather-resistant resin compatible with the base resin is coated on the surface of the extruded molded body, the sheet-like material (2 ) And a low foam substrate (3) can be simultaneously extruded with a weather resistant resin. Examples of weatherable resins that can be used for this purpose include methacrylic resins, methacryl-butyl acrylate copolymer resins, styrene-methacrylic copolymer resins, and styrene-acrylonitrile-acrylic rubber resins. Furthermore, a desired flow pattern may be decorated by simultaneous molding on the entire surface or part of the surface of the low foam base material (3) or on the entire surface or part of the surface of the weather resistant resin layer.
[0017]
The cross-sectional shape of the extruded product (1) according to the present invention, that is, the cross-sectional shape of the extrusion port (8) is not particularly limited, and may be appropriately selected depending on the purpose of use.
[0018]
【Example】
The invention is further illustrated by the following examples.
Examples 1-3
Using the materials described in Table 1 as the base resin composition, filler, and sheet-like material, a high-filler-filled low-foam extrusion-molded body in which the sheet-like material was inserted by the method described above and FIG. 1 was produced.
In Table 1, as the sheet-like material, a glass fiber woven net having a width of 60 mm and surface-treated with a vinyl chloride-urethane copolymer resin emulsion is used. The glass roving which is the main component of the net has a thickness of 0.4 mm and a width of 2 mm. The interval between adjacent rovings is about 2 mm.
Moreover, the wood powder used what passed 100 mesh, and the inorganic filler used the talc. Sodium bicarbonate was used as the foaming agent.
The glass fiber woven net is preheated using an infrared heater or a hot air heater so that the surface temperature is 150 to 170 ° C. immediately before being inserted into the mold.
Using the above composition, an extruded product having a width of 80 mm and a thickness of 10 mm was obtained using a 45 mm conical twin extruder.
[0019]
Table 1 shows the evaluation results of the specific gravity and moldability of the manufactured extruded product.
[Table 1]
Figure 0004047987
[0020]
Comparative example 1-3
Extrusion molding was performed under the same conditions as in Examples 1 to 3, except that the glass fiber woven net was not used. The results are shown in Table 1.
[0021]
【The invention's effect】
Since the extruded body of the present invention has a wood texture preferred as a building material and the like, and has lightness and strength to withstand use and handling, it is a building board, civil engineering material, landscape material, water treatment material, vehicle It can be used widely as materials and transport materials (pallets, etc.). The extrusion molded body of the present invention is stably manufactured despite containing a large amount of filler such as wood flour because a flexible sheet-like material having a large number of holes penetrating both sides is inserted therein. can do.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing a method for producing an extruded product of the present invention.
FIG. 2 shows an example of a sheet-like material that can be used in the present invention.
(A) Woven net,
(B) a net-like molded body,
(C) Perforated sheet.
[Explanation of symbols]
1: Extruded product in which a sheet-like material is inserted,
2: Sheet-like material,
3: Foam base material,
4: Low foam base material injection, insert extrusion mold,
5: Insert extrusion mold,
6: Sheet-like object insertion port,
7: Sizing die 8: Take-up roll.

Claims (5)

フィラーを25〜75重量%含有する低発泡合成樹脂に、両面に貫通する多数の孔を持ち該孔の大きさが1〜3mmである可撓性のネット状物を挿入した比重が0 . 5〜1 . 0である押出成形体。A low foaming synthetic resin containing a filler 25-75% by weight, specific gravity of the size of a large number of holes Chi the lifting pores was inserted a net-like material of flexible a 1~3mm penetrating both sides 0. 5-1. extrudate is 0. フィラーの10重量%以上が木粉である請求項1記載の押出成形体。  The extruded product according to claim 1, wherein 10% by weight or more of the filler is wood flour. ネットが天然繊維、再生繊維、合成繊維またはガラス繊維からなる不織布または織布、または有機高分子材料の網状成形体である請求項記載の押出成形体。Net natural fibers, regenerated fibers, comprising synthetic fibers or glass fiber nonwoven fabric or woven or extrudates according to claim 1, wherein the reticulated molded article of an organic polymeric material. フィラーを25〜75重量%含有する低発泡合成樹脂を押出成形しつつこれに、両面に貫通する多数の孔を持ち該孔の大きさが1〜3mmである可撓性のネット状物を挿入し、引取方向に回転する引取ロールにより引き取ることを特徴とする請求項1〜のいずれかに記載の押出成形体の製造方法。Filler thereto while extruding low foaming synthetic resin containing 25 to 75 wt%, of the pores Chi lifting a large number of holes penetrating both sides magnitude of the net-like material of the flexible is 1~3mm inserted, the production method of the extrusion molded article according to any one of claims 1-2, characterized in that pick up by take-up roll rotating in the take-up direction. フィラーを25〜75重量%含有する合成樹脂組成物を低発泡押出成形するにおいて、押出金型に設けられたネット状物挿入口から可撓性のネット状物を連続的に供給して押出金型内でこのネット状物を溶融合成樹脂組成物中に挿入し、ネット状物が挿入された合成樹脂を低発泡させながらサイジングダイを経て低発泡合成樹脂を押出成形し、引取方向に回転する1対または複数対の引取ロールにより引き取ることを特徴とする請求項1〜のいずれかに記載の押出成形体の製造方法。In low foam extrusion molding of a synthetic resin composition containing 25 to 75% by weight of a filler, a flexible net- like material is continuously supplied from a net- like material insertion port provided in an extrusion die and extruded metal the net-like material in the mold was inserted into the molten synthetic resin composition, through a sizing die while low foaming synthetic resin net-like material has been inserted is extruded low foaming synthetic resin, it rotates in the take-up direction The method according to any one of claims 1 to 3 , wherein the extruded product is taken up by one or a plurality of pairs of take-up rolls.
JP32504898A 1998-11-16 1998-11-16 Highly filled foam extrusion molding with filler Expired - Lifetime JP4047987B2 (en)

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JP2007210339A (en) * 2007-03-16 2007-08-23 Toppan Printing Co Ltd Manufacturing method of foamed resin extrusion molded article with covering sheet
CN101607457A (en) * 2008-06-20 2009-12-23 蒋建明 A kind of fiber mesh plastic board and preparation method thereof

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KR20210052065A (en) * 2019-10-31 2021-05-10 주식회사 서연이화 Material for vehicle interior
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