JP2011136498A - Co-decorating fibrous molded object and manufacturing method thereof - Google Patents

Co-decorating fibrous molded object and manufacturing method thereof Download PDF

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JP2011136498A
JP2011136498A JP2009298495A JP2009298495A JP2011136498A JP 2011136498 A JP2011136498 A JP 2011136498A JP 2009298495 A JP2009298495 A JP 2009298495A JP 2009298495 A JP2009298495 A JP 2009298495A JP 2011136498 A JP2011136498 A JP 2011136498A
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paper
mold
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molded product
fiber
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Hiroshi Takenaka
寛 竹中
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Nissha Printing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a co-decorating fibrous molded object which can be made available with a beautiful decoration, as well as a method for manufacturing this molded object. <P>SOLUTION: The method for manufacturing a co-decorating fibrous molded object involves the following procedures. First, a pictorial pattern 2 is previously formed on an easy moldable paper 1 which has microcreases formed over the entire surface of the paper 1 and thereby, is made to appear smaller in size than it does actually, then the easy moldable paper 1 is inserted in a mold 3 and the mold 3 is clamped. Next, a mixture obtained by adding a polymer binding material and water to a main fibrous material and kneading all of them, is used as a molding material 5. Further, the cavity 4 of the heated mold 3 is filled with the molding material 5, and a gap of 0.02 to 0.50 mm is formed between the parting faces of the mold 3. After that, a water vapor generated inside the cavity 4 is removed by bleeding it from the gap and thus the molding material 5 is dried and hardened, and then, the mold 3 is opened to obtain the fibrous molded object 6 integrally molded with the easy moldable paper 1 on the surface. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は成形同時加飾繊維成形品とその製造方法に関し、特に美麗な加飾が可能な成形同時加飾繊維成形品とその製造方法に関するものである。   The present invention relates to a simultaneously molded decorative fiber molded product and a method for producing the same, and particularly relates to a molded simultaneous decorated fiber molded product capable of being beautifully decorated and a method for manufacturing the same.

従来、繊維成形品の製造方法として、繊維性主材料に高分子結合材および水を添加して混練した混合物を成形材料として用い、加熱した金型のキャビティ内に前記成形材料を充填し、次いで前記金型のパーティング面の間に、0.02〜0.50mmの間隙を形成し、この間隙から前記キャビティ内で発生した水蒸気を放出除去して前記成形材料を乾燥し固化させ、繊維成形品を得る飾繊維成形品の製造方法があった(たとえば、特許文献1〜2参照)。   Conventionally, as a method for producing a fiber molded article, a mixture obtained by adding a polymer binder and water to a fibrous main material and kneading is used as a molding material, and the molding material is filled in a cavity of a heated mold, A gap of 0.02 to 0.50 mm is formed between the parting surfaces of the mold, and water vapor generated in the cavity is discharged and removed from the gap to dry and solidify the molding material, thereby forming a fiber. There has been a method of manufacturing a decorative fiber molded product for obtaining a product (see, for example, Patent Documents 1 and 2).

上記製造方法に用いる繊維性主材料としてパルプが多用されることから、上記の繊維成形品の製造方法はパルプ射出成形(Pulp Injection Molding、PIM(登録商標))とも呼ばれている。   Since pulp is frequently used as the fibrous main material used in the production method, the production method of the above-mentioned fiber molded article is also called pulp injection molding (PIM (registered trademark)).

特許2916136号公報Japanese Patent No. 2916136 特許3084216号公報Japanese Patent No. 3084216

上記のような従来の繊維成形品では、美麗な加飾を行うのが困難であるという課題があった。   The conventional fiber molded article as described above has a problem that it is difficult to perform beautiful decoration.

すなわち、繊維成形品に加飾を行うには、繊維成形品にスクリーン印刷法などの手段を用いることができるが、繊維成形品が平坦形状でなければならず、適用範囲の制約が大きい。また、成形材料を着色することにより繊維成形品を加飾することができるが、繊維成形品全体を単一色にできるにとどまり、美麗な加飾とは言えない。   That is, in order to decorate the fiber molded product, means such as a screen printing method can be used for the fiber molded product, but the fiber molded product must have a flat shape, and the application range is greatly limited. Moreover, although a fiber molded article can be decorated by coloring a molding material, it can only be made into the single color of the whole fiber molded article, and cannot be said to be a beautiful decoration.

そこで、あらかじめプラスチックシートに美麗な加飾を行い、これを繊維成形品を製造する金型にあらかじめ挟み込み、繊維成形品と一体化して成形することが考えられる。このような加飾法は、あらかじめプラスチックシート状に加飾を行うため美麗な図柄等を形成することが可能であり、立体形状の成形品表面に一体化することが可能なため、プラスチック成形品の加飾に多用され、インサート成形法、成形同時加飾法とも呼ばれている。   Therefore, it is conceivable to perform a beautiful decoration on the plastic sheet in advance, and insert it in a mold for manufacturing the fiber molded product in advance, and form it integrally with the fiber molded product. Such a decoration method can be used to pre-decorate a plastic sheet to form beautiful designs and the like, and can be integrated on the surface of a three-dimensional molded product. Often used for decoration, it is also called insert molding method or simultaneous molding method.

しかし、上記加飾法はプラスチックシートを用いるため、繊維成形品の製造方法における乾燥工程において、成形材料に含まれる水分を水蒸気として外部に放出することがうまくできず、繊維成形品の製造方法に適用するのは困難であった。   However, since the decoration method uses a plastic sheet, the moisture contained in the molding material cannot be released to the outside as water vapor in the drying step in the manufacturing method of the fiber molded product. It was difficult to apply.

また、プラスチックシートに代えて、水蒸気の透過が良好な不織布を用いることも考えられるが、繊維成形品の製造方法における乾燥工程では、プラスチック成形品の製造方法と比較しても、高い温度で長い時間加熱されるため、不織布が乾燥工程において加えられる熱によって溶融し、やはり適用するのは困難であった。   In addition, it is conceivable to use a non-woven fabric having good water vapor transmission instead of the plastic sheet, but the drying process in the method for producing a fiber molded product is longer at a higher temperature than the method for producing a plastic molded product. Because it is heated for a period of time, the nonwoven fabric melts due to the heat applied in the drying process and is still difficult to apply.

本発明は、上記のような課題を解決するためになされたもので、美麗な加飾が可能な成形同時加飾繊維成形品とその製造方法を目的とする。   The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a molded and simultaneously decorated fiber molded product that can be beautifully decorated and a method for manufacturing the same.

上記の目的を達成するために、第1の発明は、微細な皺を一面に形成し見かけ上の寸法を小さくした易成形用紙にあらかじめ図柄を形成して加飾し、易成形用紙を金型に挟み込み、次いで型締めし、次いで繊維性主材料に高分子結合材および水を添加して混練した混合物を成形材料として用い、加熱した金型のキャビティ内に成形材料を充填し、次いで金型のパーティング面の間に0.02〜0.50mmの間隙を形成し、この間隙から前記キャビティ内で発生した水蒸気を放出除去して成形材料を乾燥し固化させ、次いで型開きして易成形用紙が表面に一体成形された繊維成形品を得る成形同時加飾繊維成形品の製造方法である。   In order to achieve the above object, according to a first invention, a pattern is previously formed and decorated on an easy-molding paper in which a fine ridge is formed on one side and an apparent size is reduced, and the easy-molding paper is molded as a mold. The mixture is then clamped, then a mixture obtained by adding a polymer binder and water to the fibrous main material and kneading is used as the molding material, and the molding material is filled into the cavity of the heated mold, and then the mold A gap of 0.02 to 0.50 mm is formed between the parting surfaces, and water vapor generated in the cavity is released and removed from the gap to dry and solidify the molding material. This is a method of manufacturing a simultaneously molded decorative fiber molded product to obtain a fiber molded product in which a sheet is integrally formed on the surface.

このように構成すると、易成形用紙が繊維成形品と一体化したものとなる。   If comprised in this way, an easily moldable paper will become what was integrated with the fiber molded product.

第2の発明は、第1の発明の構成において、図柄が形成された易成形用紙が、金型の前記キャビティ面形状に沿うよう立体形状に予備成形されたものである、成形同時加飾繊維成形品の製造方法である。   2nd invention is the structure of 1st invention, The easily formed paper in which the pattern was formed is preformed by the solid | 3D shape so that the said cavity surface shape of a metal mold | die may be formed, Molding simultaneous decorating fiber It is a manufacturing method of a molded article.

このように構成すると、金型内で易成形用紙がキャビティ面にきちんと沿う。   If comprised in this way, an easily moldable sheet | seat will closely follow a cavity surface within a metal mold | die.

第3の発明は、第1の発明の構成において、型開きした後、前記繊維成形品の周囲形状に沿って不要な前記易成形用紙を除去する、成形同時加飾繊維成形品の製造方法である。   3rd invention is the structure of 1st invention, After mold opening, the said easily formed paper unnecessary along the surrounding shape of the said fiber molded product is removed, The manufacturing method of a simultaneous molding decorative fiber molded product is there.

このように構成すると、不要部分が除去され美麗な成形同時加飾が可能となる。   If comprised in this way, an unnecessary part will be removed and beautiful shaping | molding simultaneous decoration will be attained.

第4の発明は、繊維成形品の表面に、微細な皺が一面に形成され、見かけ上の寸法を小さくした易成形用紙が積層され、易成形用紙が加飾されている、成形同時加飾繊維成形品である。   The fourth invention is a simultaneous molding decoration in which fine wrinkles are formed on the surface of a fiber molded article, easy-molding papers with reduced apparent dimensions are laminated, and easy-molding papers are decorated. It is a fiber molded product.

このように構成すると、すべて繊維質材料で構成される。   If comprised in this way, all will be comprised with a fibrous material.

第5の発明は、第4の発明の構成において、繊維成形品の表面と、易成形用紙の表面との間に段差がない成形同時加飾繊維成形品である。   A fifth aspect of the invention is a simultaneously molded decorative fiber molded article having no step between the surface of the fiber molded article and the surface of the easily molded paper in the configuration of the fourth invention.

このように構成すると、繊維成形品と易成形用紙との一体感がある加飾繊維成形品の表面形状になっている。   If comprised in this way, it has the surface shape of the decorative fiber molded product with the sense of unity of a fiber molded product and an easily-molded paper.

以上説明したように、第1の発明は、易成形用紙が繊維成形品と一体化し、加熱乾燥工程で水蒸気は金型内からきちんと除去されるが易成形用紙の図柄は損なわれないため、成形同時加飾が可能となる。また、加飾手段の制約が少ないため、様々な表現が可能になる。   As described above, according to the first invention, the easy-forming paper is integrated with the fiber molded product, and water vapor is properly removed from the mold in the heat drying process, but the design of the easy-forming paper is not impaired. Simultaneous decoration is possible. Moreover, since there are few restrictions of a decoration means, various expressions are attained.

第2の発明は、第1の発明の効果に加えて、金型内でキャビティ面にきちんと沿うため、成形材料が裏回りしたりせず、立体形状に成形同時加飾がより確実に可能となる。   In the second invention, in addition to the effects of the first invention, since the mold surface is exactly along the cavity surface, the molding material does not turn around, and the simultaneous decoration of the three-dimensional shape can be more reliably performed. Become.

第3の発明は、第1の発明の効果に加えて、不要部分を除去するため、成形品の周囲形状が美麗な成形同時加飾が可能となる。   In addition to the effects of the first invention, the third invention removes unnecessary portions, so that simultaneous molding with a beautiful peripheral shape of the molded product becomes possible.

第4の発明は、すべて繊維質材料で構成されるため、手触りがよい。また、リサイクル時に分別等が不要となり、廃棄時も生分解が容易なものである。   Since all the 4th inventions are composed of fibrous materials, they are easy to touch. In addition, separation or the like is not necessary at the time of recycling, and biodegradation is easy even at the time of disposal.

第5の発明は、第4の発明の効果に加えて、繊維成形品と易成形用紙との一体感があるため、貼り付けに見えない。   In addition to the effects of the fourth invention, the fifth invention does not appear to be pasted because there is a sense of unity between the fiber molded product and the easily formed paper.

本発明に用いる易成形用紙の一例を示す断面図である。It is sectional drawing which shows an example of the easily formed paper used for this invention. 本発明に用いる易成形用紙の一面に形成された微細な皺の一例を示す写真である。It is a photograph which shows an example of the fine wrinkle formed on the one surface of the easily-formed paper used for this invention. 本発明の一実施例を示す断面図である。It is sectional drawing which shows one Example of this invention. 本発明の一実施例を示す断面図である。It is sectional drawing which shows one Example of this invention. 本発明の一実施例を示す断面図である。It is sectional drawing which shows one Example of this invention. 本発明の一実施例を示す斜視図である。It is a perspective view which shows one Example of this invention.

次に、本発明の第1の実施の形態について図を参照しながら説明する。   Next, a first embodiment of the present invention will be described with reference to the drawings.

本発明の成形同時加飾繊維成形品7の製造方法は、微細な皺を一面に形成し見かけ上の寸法を小さくした易成形用紙1にあらかじめ図柄2を形成し、前記易成形用紙1を金型に挟み込み、次いで型締めし、次いで繊維性主材料に高分子結合材および水を添加して混練した混合物を成形材料5として用い、加熱した金型のキャビティ内に前記成形材料5を充填し、次いで前記金型のパーティング面の間に0.02〜0.50mmの間隙を形成し、前記間隙から前記キャビティ内で発生した水蒸気を放出除去して前記成形材料5を乾燥し固化させ、次いで型開きして前記易成形用紙1が表面に一体成形された繊維成形品6を得るように構成したものである。   The manufacturing method of the simultaneously molded decorative fiber molded product 7 according to the present invention is such that a pattern 2 is formed in advance on a readily formable paper 1 formed with fine wrinkles on one side and having a small apparent size. A mixture obtained by sandwiching in a mold, then clamping and then adding a polymer binder and water to a fibrous main material and kneading is used as the molding material 5, and the molding material 5 is filled into a cavity of a heated mold. Next, a gap of 0.02 to 0.50 mm is formed between the parting surfaces of the mold, and water vapor generated in the cavity is released and removed from the gap to dry and solidify the molding material 5; Next, the mold is opened to obtain a fiber molded product 6 in which the easy-forming paper 1 is integrally formed on the surface.

まず、微細な皺を一面に形成し見かけ上の寸法を小さくした易成形用紙1に、あらかじめ図柄2を形成して加飾する(図1参照)。   First, a pattern 2 is formed and decorated in advance on an easily-molded paper 1 having a fine ridge formed on one side and an apparent size reduced (see FIG. 1).

易成形用紙1としては、微細な皺を一面に形成し見かけ上の寸法を小さくしたものを用いる(図2参照)。このような構成の易成形用紙1は、立体成形性に優れるため、立体形状を有する繊維成形品6の表面に一体化して積層する際、しわや破れなどが生じることなく美麗に積層することが可能である。また、後に行う乾燥工程において、水蒸気の透過性に優れる。また、乾燥工程において加えられる加熱によっても用紙自体に変質が生じない。   As the easy-molding paper 1, a paper having fine wrinkles formed on one side and having a reduced apparent size is used (see FIG. 2). Since the easy-forming paper 1 having such a configuration is excellent in three-dimensional formability, it can be laminated beautifully without causing wrinkles or tearing when it is integrally laminated on the surface of the fiber molded product 6 having a three-dimensional shape. Is possible. Moreover, in the drying process performed later, the water vapor permeability is excellent. Further, the paper itself is not deteriorated by heating applied in the drying process.

易成形用紙1としては、さらに具体的には、次のような製造方法によって得たものを使用するとよい。すなわち、紙中水分を20〜50%に調整した湿紙を、ロールの幅向に一定間隔で溝を周方向に設けた金属ロールと平滑なゴムロールから成る収縮付与装置を用い、金属ロールの周速に対してゴムロールの周速が遅いプレスロールから成る収縮付与装置に通紙して紙匹を収縮させ、処理後に乾燥することによって、縦方向及び横方向の破断伸びが15〜50%である易成形用紙1を得ることがきる(特許3407114号等参照)。   More specifically, the easily formed paper 1 may be obtained by the following manufacturing method. That is, a wet paper whose water content in the paper is adjusted to 20 to 50% is applied to the circumference of the metal roll using a shrinkage imparting device consisting of a metal roll having a groove in the circumferential direction at regular intervals in the width direction of the roll and a smooth rubber roll. The breaking elongation in the longitudinal direction and the transverse direction is 15 to 50% by passing the paper through a shrinkage imparting device composed of a press roll whose peripheral speed of the rubber roll is slower than the speed, and shrinking the web, and drying after the treatment. Easy formable paper 1 can be obtained (see Japanese Patent No. 3407114, etc.).

易成形用紙1の原料となる天然パルプとしては、針葉樹や広葉樹を用いた木材パルプ、ケナフやバガスなどの非木材パルプ、古紙パルプなど通常の製紙用原料であれば特に制限されるものではないが、汎用性などの点から木材パルプの使用が好適である。この木材パルプの叩解度は、伸び特性、強度、抄紙性などからCSF200〜450mlが好適であり、より好ましくはCSF250〜400mlである。天然パルプの配合率は50%以上であることが好ましい。   The natural pulp used as the raw material of the easily-formed paper 1 is not particularly limited as long as it is a normal papermaking raw material such as wood pulp using conifers and hardwoods, non-wood pulp such as kenaf and bagasse, and waste paper pulp. From the viewpoint of versatility, use of wood pulp is preferred. The beating degree of this wood pulp is preferably CSF 200 to 450 ml, more preferably CSF 250 to 400 ml, from the viewpoint of elongation characteristics, strength, papermaking properties and the like. The blending ratio of natural pulp is preferably 50% or more.

このような構成の易成形用紙1上に、各種印刷法などの手段により図柄2を形成して加飾を行う。印刷法としては、凸版印刷法、凹版印刷法、平版印刷法、孔版印刷法などの手段を用いることができる。また、インクジェット印刷法など、版を用いない手段によって図柄2を形成してもよい。図柄2を形成するインクとしては、着色材として染料や顔料などを用いるとよい。図柄2は、易成形用紙1の上にインキ層として積層するように形成するとよい。また、易成形用紙1を構成する繊維にインキが含浸するようにして図柄2を形成してもよい。   On the easily formed paper 1 having such a configuration, a pattern 2 is formed and decorated by means of various printing methods. As the printing method, means such as a relief printing method, an intaglio printing method, a lithographic printing method, and a stencil printing method can be used. Further, the pattern 2 may be formed by means that does not use a plate such as an ink jet printing method. As the ink for forming the pattern 2, a dye or a pigment may be used as a coloring material. The pattern 2 may be formed so as to be laminated as an ink layer on the easily formed paper 1. Further, the pattern 2 may be formed by impregnating the fibers constituting the easily-formed paper 1 with ink.

なお、インクの着色材やバインダーとして、天然素材由来のものや生分解性を有するものを利用することにより、成形同時加飾繊維成形品7を再利用したり廃棄したりする際、環境対応をより容易にすることが可能となる。   In addition, when reusing or disposing of the simultaneously molded decorative fiber molded product 7 by using a material derived from a natural material or a biodegradable material as an ink coloring material or binder, it is environmentally friendly. It becomes possible to make it easier.

次いで、易成形用紙1を金型3に挟み込み、次いで型締めを行う(図3参照)。   Next, the easy-forming paper 1 is sandwiched between the molds 3 and then the molds are clamped (see FIG. 3).

金型3としては、繊維成形品6を得るために用いる成形材料5を注入可能で、加熱により成形材料5に含有される水分を水蒸気として排出除去して乾燥させるように構成されたパルプ射出成形法に使用するものを用いる(特許2916136号公報、特許3084216号公報等参照)。   The mold 3 can be injected with a molding material 5 used to obtain a fiber molded product 6, and pulp injection molding is configured to discharge and remove moisture contained in the molding material 5 as water vapor by heating. Those used in the law are used (see Japanese Patent No. 2916136, Japanese Patent No. 3084216, etc.).

金型3のキャビティ面に易成形用紙1を確実に沿わせるようにするため、易成形用紙1をあらかじめキャビティ面の形状に立体成形しておいてもよい(予備成形)。立体成形はプレス法など、既知の手段により行うとよい。易成形用紙1がキャビティ面に沿うように配置することにより、後に行う成形材料5の充填工程において、易成形用紙1の最終的に最表面に位置する側の面に成形材料5が回り込む不具合(裏回りとも言う)を防止することができる。   In order to ensure that the easy-forming paper 1 follows the cavity surface of the mold 3, the easy-forming paper 1 may be three-dimensionally formed in advance into the shape of the cavity surface (preliminary molding). Three-dimensional molding may be performed by a known means such as a press method. By arranging the easy-forming paper 1 along the cavity surface, in the subsequent filling step of the molding material 5, the molding material 5 wraps around the surface of the easy-forming paper 1 that is finally located on the outermost surface ( Can also be prevented.

次いで、繊維性主材料に高分子結合材および水を添加して混練した混合物を成形材料5として用い、加熱した金型3のキャビティ4内に前記成形材料5を充填する(図4参照)。   Next, a mixture obtained by adding a polymer binder and water to the fibrous main material and kneading is used as the molding material 5, and the molding material 5 is filled into the cavity 4 of the heated mold 3 (see FIG. 4).

繊維性主材料としては、針葉樹や広葉樹を用いた木材パルプ、ケナフやバガスなどの非木材パルプ、古紙パルプなど通常の製紙用原料を用いることができる。また、紙ごみ、故紙、綿布、麻、籾殻、豆腐殻、木粉のような天然の繊維性のもの、およびガラス繊維、並びにナイロン、ポリアクリル、ポリエステルのような合成樹脂からなる繊維の何れでも使用できるが、特に紙ごみ、故紙のような紙繊維が好ましい。なお、このような紙繊維の繊維長さは短いので、強度を必要とする成形品の場合には、他の繊維を5%〜40%、好ましくは5%〜20%複合すると効果的であり、複合する繊維の長さは、3mm〜10mmが好ましい。   As the fibrous main material, wood pulp using conifers and hardwoods, non-wood pulps such as kenaf and bagasse, waste paper pulp, and other ordinary papermaking raw materials can be used. In addition, any of natural fibers such as paper waste, waste paper, cotton cloth, hemp, rice husk, tofu husk, wood flour, and glass fiber and fibers made of synthetic resin such as nylon, polyacryl, polyester, etc. Although usable, paper fibers such as paper waste and waste paper are particularly preferable. In addition, since the fiber length of such a paper fiber is short, in the case of a molded product requiring strength, it is effective to combine other fibers with 5% to 40%, preferably 5% to 20%. The length of the composite fiber is preferably 3 mm to 10 mm.

高分子結合材としては、繊維性主材料と混練する際には、水に可溶であるか、低粘度のエマルジョンを形成し、水を気化除去した際には、固形状で成形品の離型が容易なものが好ましく、澱粉、ポリビニールアルコール、ポリアクリル酸、ポリアクリルアミド、ポリイタコン酸、カルボキシメチルセルローズ、並びにこれらの共重合体のような水溶性高分子材料が使用でき、またユリア樹脂、メラミン樹脂、フェノール樹脂、不飽和ポリエステルのような本来は水溶性でない熱硬化性樹脂でも、その初期縮合物が水溶液もしくはエマルジョンとなるものは使用できる。   As a polymer binder, when kneaded with a fibrous main material, a water-soluble or low-viscosity emulsion is formed, and when water is vaporized and removed, the molded product is separated in a solid form. Those that are easy to mold are preferred, and water-soluble polymer materials such as starch, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyitaconic acid, carboxymethylcellulose, and copolymers thereof can be used, and urea resins, Even thermosetting resins that are not inherently water-soluble, such as melamine resins, phenol resins, and unsaturated polyesters, whose initial condensates are aqueous solutions or emulsions can be used.

上記した繊維性主材料に、上記した高分子結合材および水を添加して混練した混合物を成形材料5とする。成形材料5の配合割合は、たとえば、繊維性主材料を50%〜90%、好ましくは60%〜80%、高分子結合材を10%〜50%、好ましくは20%〜40%、水を20%〜80%、好ましくは30%〜70%にするとよい。   A mixture obtained by adding and kneading the above-described polymer binder and water to the above-described fibrous main material is referred to as a molding material 5. The blending ratio of the molding material 5 is, for example, 50% to 90% for the fibrous main material, preferably 60% to 80%, 10% to 50% for the polymer binder, preferably 20% to 40%, and water. 20% to 80%, preferably 30% to 70%.

金型3の加熱は、たとえば、キャビティ4を形成する型壁面の温度が120℃〜240℃、好ましくは160℃〜220℃となるように加熱するとよい。   The mold 3 may be heated, for example, so that the temperature of the mold wall surface forming the cavity 4 is 120 ° C. to 240 ° C., preferably 160 ° C. to 220 ° C.

次いで、前記金型3のパーティング面の間に0.02〜0.50mmの間隙を形成し、前記間隙から前記キャビティ4内で発生した水蒸気を放出除去して前記成形材料5を乾燥し固化させる。   Next, a gap of 0.02 to 0.50 mm is formed between the parting surfaces of the mold 3, and water vapor generated in the cavity 4 is discharged and removed from the gap to dry and solidify the molding material 5. Let

成形材料5を加熱した金型3のキャビティ4内に充填することにより、混練時に添加した水は瞬時に気化され、その蒸気圧により繊維性主材料は発泡され、同時に繊維性主材料は、蒸気圧によりキャビティ4内に充満されてその壁面に押圧されるので、肉厚変化の大きな成形品でも良好な転写性で成形され、また気化した水蒸気は、金型3間の隙間から排気除去されて成形品の固化が速やかに行われる。易成形用紙1は通気性に優れるため、乾燥工程における水蒸気の排出の妨げにならない。また、易成形用紙1は、パルプ等の耐熱性に優れた素材から形成されたものであるため、乾燥工程の加熱によって溶融や黄変などの変質を生じることもない。   By filling the molding material 5 into the cavity 4 of the heated mold 3, the water added at the time of kneading is instantly vaporized, and the fibrous main material is foamed by the vapor pressure. At the same time, the fibrous main material is vaporized. Since the cavity 4 is filled with pressure and pressed against the wall surface, even a molded product having a large change in thickness is molded with good transferability, and vaporized water vapor is exhausted and removed from the gap between the molds 3. The molded product is quickly solidified. Since the easily formed paper 1 is excellent in air permeability, it does not hinder the discharge of water vapor in the drying process. Moreover, since the easily-formed paper 1 is formed from a material having excellent heat resistance such as pulp, it does not cause alteration such as melting or yellowing by heating in the drying process.

次いで、型開きして易成形用紙1が繊維成形品6の表面に一体成形された成形同時加飾繊維成形品7を得ることができる(図5参照)。   Next, the mold can be opened to obtain a simultaneously molded decorative fiber molded product 7 in which the easily molded paper 1 is integrally formed on the surface of the fiber molded product 6 (see FIG. 5).

最後に、必要に応じて繊維成形品6周囲の易成形用紙1の不要領域を、プレス法、トムソン法などの手段によって除去することにより、美麗な成形同時加飾繊維成形品7を得ることができる(図6参照)。   Finally, if necessary, an unnecessary area of the easily formed paper 1 around the fiber molded product 6 is removed by means such as a press method or a Thomson method, whereby a beautiful molded simultaneous decorated fiber molded product 7 can be obtained. Yes (see FIG. 6).

このようにして得た成形同時加飾繊維成形品7は、繊維成形品6のキャビティ面に接する領域と、易成形用紙1のキャビティ面に接する領域との間に段差が生じず、表面が面一の一体感に優れたものとなる。また、繊維成形品6と易成形用紙1は、水素結合により強固に密着するため、接着剤等を用いることなく一体化させることが可能である。また、易成形用紙1と繊維成形品6は、いずれもパルプなどの繊維質材料から形成されるものであり、その手触りは独特の柔らかいものである。さらに、再利用時や廃棄時も、いずれもパルプなどの繊維質材料から形成されるものであるため、その処理が極めて容易な環境配慮型の製品となる。   The molded co-decorated fiber molded article 7 thus obtained has no surface difference between the area in contact with the cavity surface of the fiber molded article 6 and the area in contact with the cavity surface of the easy-formed paper 1, and the surface is surface. It will be excellent in a sense of unity. Moreover, since the fiber molded product 6 and the easily-formed sheet 1 are firmly adhered by hydrogen bonding, they can be integrated without using an adhesive or the like. Further, the easy-forming paper 1 and the fiber molded product 6 are both formed from a fibrous material such as pulp, and the touch is unique and soft. Furthermore, since both are reused and discarded, they are formed from a fibrous material such as pulp, so that it becomes an environmentally friendly product that is extremely easy to process.

パルプ100%からなり一面に微細な皺が形成された易成形用紙(カルティエレ・カリオラロ社製)の片面に、インクジェットプリンタを用いて図柄を形成した。この易成形用紙を、あらかじめ成形品形状にプレス成形し、金型のキャビティ面に沿う立体形状に成形した。   A pattern was formed on one side of an easily-formed paper (Cartiere Cariolaro) made of 100% pulp and having fine wrinkles formed on one side using an inkjet printer. This easy-molding paper was previously press-formed into a molded product shape and formed into a three-dimensional shape along the cavity surface of the mold.

また、繊維性主材料として麻とコウゾを、高分子結合材として澱粉をそれぞれ用い、水を添加して混練し、成形材料を得た。   Also, hemp and mulberry were used as the fibrous main materials, starch was used as the polymer binder, and water was added and kneaded to obtain a molding material.

155〜170℃に加熱されたパルプインジェクション用金型のキャビティ面に、上記の易成形用紙を固定し、型締めして上記の成形材料を充填した。次いで金型のパーティング面に0.20mmの隙間を形成し、1〜2分間水蒸気を放出除去して成形材料を乾燥し固化させた。   The easy-forming paper was fixed to the cavity surface of a pulp injection mold heated to 155 to 170 ° C., and the mold was clamped to fill the molding material. Next, a 0.20 mm gap was formed on the parting surface of the mold, and the molding material was dried and solidified by discharging and removing water vapor for 1 to 2 minutes.

次いで、型開きして易成形用紙が一体化された繊維成形品を得、易成形用紙の周囲形状等をトムソン型で打ち抜き除去して成形同時加飾繊維成形品を得た。   Then, the mold was opened to obtain a fiber molded product in which easy-molding paper was integrated, and the peripheral shape of the easy-molded paper was punched and removed with a Thomson mold to obtain a simultaneously molded decorative fiber molded product.

このようにして得た成形同時加飾繊維成形品は、立体形状に美麗な加飾がされたものであった。易成形用紙には皺や破れがなく、易成形用紙と繊維成形品とが強固に一体化されたものであり、接合箇所にも段差がなく美麗なものであった。   The molded simultaneous decorated fiber molded article thus obtained was a beautifully decorated three-dimensional shape. The easy-forming paper was free from wrinkles and tears, and the easy-forming paper and the fiber-molded product were firmly integrated, and there were no steps at the joints, and they were beautiful.

本発明は成形同時加飾繊維成形品とその製造方法に関し、特に美麗な加飾が可能な成形同時加飾繊維成形品とその製造方法に関するものである。   The present invention relates to a simultaneously molded decorative fiber molded product and a method for producing the same, and particularly relates to a molded simultaneous decorated fiber molded product capable of being beautifully decorated and a method for manufacturing the same.

1 易成形用紙
2 図柄
3 金型
4 キャビティ
5 成形材料
6 繊維成形品
7 成形同時加飾繊維成形品
DESCRIPTION OF SYMBOLS 1 Easy-molding paper 2 Design 3 Mold 4 Cavity 5 Molding material 6 Textile molded article 7 Molding simultaneous decoration textile molded article

Claims (5)

微細な皺を一面に形成し見かけ上の寸法を小さくした易成形用紙に、あらかじめ図柄を形成して加飾し、
前記易成形用紙を金型に挟み込み、
次いで型締めし、
次いで繊維性主材料に高分子結合材および水を添加して混練した混合物を成形材料として用い、加熱した金型のキャビティ内に前記成形材料を充填し、
次いで前記金型のパーティング面の間に0.02〜0.50mmの間隙を形成し、前記間隙から前記キャビティ内で発生した水蒸気を放出除去して前記成形材料を乾燥し固化させ、
次いで型開きして前記易成形用紙が表面に一体成形された繊維成形品を得ることを特徴とする成形同時加飾繊維成形品の製造方法。
A pattern is formed and decorated in advance on easy-molded paper with a fine ridge formed on one side and the apparent dimensions reduced.
The easy-forming paper is sandwiched between molds,
Next, mold clamping
Next, a mixture obtained by adding a polymer binder and water to a fibrous main material and kneading is used as a molding material, and the molding material is filled into a cavity of a heated mold,
Next, a gap of 0.02 to 0.50 mm is formed between the parting surfaces of the mold, and water vapor generated in the cavity is released and removed from the gap to dry and solidify the molding material.
Next, the mold is opened to obtain a fiber molded product in which the easily molded paper is integrally molded on the surface thereof.
前記図柄が形成された前記易成形用紙が、前記金型の前記キャビティ面形状に沿うよう立体形状に予備成形されたものである請求項1記載の成形同時加飾繊維成形品の製造方法。   The method for producing a simultaneously molded decorative fiber molded product according to claim 1, wherein the easily-formed paper on which the design is formed is preformed into a three-dimensional shape along the shape of the cavity surface of the mold. 型開きした後、前記繊維成形品の周囲形状に沿って不要な前記易成形用紙を除去する請求項1記載の成形同時加飾繊維成形品の製造方法。   The method for producing a simultaneously molded decorative fiber molded article according to claim 1, wherein after the mold is opened, the unnecessary easy-forming paper is removed along the peripheral shape of the fiber molded article. 繊維成形品の表面に、微細な皺が一面に形成され見かけ上の寸法を小さくした易成形用紙が積層され、前記易成形用紙が加飾されていることを特徴とする成形同時加飾繊維成形品。   Simultaneously-decorated fiber molding, characterized in that fine-shaped wrinkles are formed on the surface of a fiber-molded product and easy-molding paper with a small apparent dimension is laminated, and the easy-molding paper is decorated. Goods. 前記繊維成形品の表面と前記易成形用紙の表面との間に段差がない請求項4記載の成形同時加飾繊維成形品。   The simultaneously molded decorative fiber molded product according to claim 4, wherein there is no step between the surface of the fiber molded product and the surface of the easily formed paper.
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