JP7051072B2 - Manufacturing method of heat-bonded shoji paper - Google Patents
Manufacturing method of heat-bonded shoji paper Download PDFInfo
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Description
本発明は、熱接着障子紙の製造方法に関する。 The present invention relates to a method for producing heat-bonded shoji paper.
本発明の出願人は、特許文献１（特許第２７７２２４９号公報）に記載されているように、熱接着樹脂を塗布したのち、この熱接着樹脂を加熱溶融して得た熱接着貼り紙を開発した。
ところが、近年化学的に粉砕して得られる化学粉砕熱接着樹脂が、粉砕に用いられるトリクレン等の薬剤に対する規制が厳しくなったことにより入手困難となっている。
As described in Patent Document 1 (Japanese Patent No. 2772249), the applicant of the present invention has developed a heat-adhesive sticker obtained by applying a heat-adhesive resin and then heating and melting the heat-adhesive resin. ..
However, in recent years, it has become difficult to obtain chemically pulverized heat-adhesive resins obtained by chemically pulverizing due to stricter regulations on chemicals such as trichlorethylene used for pulverization.
熱接着樹脂については、特許文献２（特開平５－３３８０９５号公報）に開示されているように、冷凍粉砕機等で粉砕して粒状のものを得ることも知られているが、化学粉砕したものに比べ数μｍから数百μｍと粒径のバラツキが非常に大きく、熱接着紙に適しないものとされていた。 As for the heat-adhesive resin, as disclosed in Patent Document 2 (Japanese Unexamined Patent Publication No. 5-338895), it is known that a granular substance is obtained by pulverizing with a refrigerating pulverizer or the like, but it is chemically pulverized. The variation in particle size was very large, ranging from several μm to several hundred μm, and it was considered unsuitable for heat-bonded paper.
本発明の課題は上記の問題を解決し、冷凍粉砕熱接着樹脂を用いて熱接着障子紙を製造することを第１の課題としている。
また、冷凍粉砕熱接着樹脂を用いても、加工性が良く十分な接着強度を得られるようにすることを第２の課題としている。
The first problem of the present invention is to solve the above-mentioned problems and to produce heat-bonded shoji paper using a frozen pulverized heat-adhesive resin.
Further, it is a second issue to make it possible to obtain sufficient adhesive strength with good processability even if a freezing pulverized heat adhesive resin is used.
請求項１に係る発明は、熱接着障子紙の製造方法であって、
ケン化エチレン酢酸ビニル共重合体よりなり、融点が６０℃～１５０℃である感熱性接着剤を冷凍粉砕機で粉砕し、得られた粒状の冷凍粉砕熱接着樹脂をふるいにかけ、最小粒径が６３μｍ、最大粒径が２５０μｍの冷凍粉砕熱接着樹脂を得る工程と、
前記冷凍粉砕熱接着樹脂を障子紙の片側の面に散布し、前記冷凍粉砕熱接着樹脂で覆われる部分の面積が前記障子紙の全面積の４０％～５０％となるように、熱接着樹脂ドットをまんべんなく分布するように配置させる工程と、
前記熱接着樹脂ドットを加熱して表面を溶融させ、下部が部分的に前記障子紙の内部に浸透し上部が半球形又は略球形を呈する熱接着樹脂メルトとする工程と、
前記熱接着樹脂メルトが冷えて溶融部分が固まった後に、前記障子紙を巻き取る工程からなることを特徴とする。
The invention according to
A heat-sensitive adhesive made of a saponified ethylene-vinyl acetate copolymer and having a melting point of 60 ° C. to 150 ° C. is crushed by a refrigerating crusher, and the obtained granular refrigerated pulverized heat-adhesive resin is sifted to obtain a minimum particle size. A process for obtaining a frozen pulverized heat-adhesive resin having a maximum particle size of 63 μm and a maximum particle size of 250 μm.
The frozen crushed heat adhesive resin is sprayed on one side of the shoji paper, and the area of the portion covered with the frozen crushed heat adhesive resin is 40% to 50% of the total area of the shoji paper. The process of arranging the dots so that they are evenly distributed,
A step of heating the heat-adhesive resin dots to melt the surface, and forming a heat-adhesive resin melt in which the lower part partially penetrates into the inside of the shoji paper and the upper part exhibits a hemispherical shape or a substantially spherical shape.
It is characterized by a step of winding up the shoji paper after the heat-adhesive resin melt has cooled and the melted portion has hardened .
請求項１に係る発明の熱接着障子紙の製造方法によれば、冷凍粉砕熱接着樹脂を障子紙の片側の面に散布し、下部が部分的に前記障子紙の内部に浸透し上部が半球形又は略球形を呈する熱接着樹脂ドットをまんべんなく分布するように配置させているので、入手困難な化学粉砕熱接着樹脂を用いることなく、熱接着障子紙を得ることができる。
また、冷凍粉砕熱接着樹脂をふるいにかけ、最小粒径が６３μｍ、最大粒径が２５０μｍとし、図３（ｂ）のグラフに示す粒径のうち、飛散し易い粒径６３μｍ未満の冷凍粉砕熱接着樹脂及び粒径２５０μｍを超える冷凍粉砕熱接着樹脂が含まれていないので、障子紙の片側の面に冷凍粉砕熱接着樹脂を散布する際に粉末飛散が多くなり過ぎず、飛散によるロスや加工機周辺部への付着を抑制でき、かつ、熱接着障子紙が厚くなり過ぎることを防止できる。
さらに、粒径と接着強度は相関関係がある（小さいと接着強度が低い）ため、冷凍粉砕熱接着樹脂の粒径を６３μｍ～２５０μｍとすることによって、適度な接着強度を得ることができ、冷凍粉砕熱接着樹脂で覆われる部分の面積が全面積の４０％～５０％であるので、障子紙に適している。
加えて、冷凍粉砕熱接着樹脂は、ケン化エチレン酢酸ビニル共重合体であり、かつ、融点が６０℃～１５０℃であるので、水分の変化によって接着力が左右されず、風合を損なうこともない。
According to the method for producing heat-adhesive shoji paper according to
Further, the freezing and crushing heat-adhesive resin is sieved to set the minimum particle size to 63 μm and the maximum particle size to 250 μm , and among the particle sizes shown in the graph of FIG. Since the resin and the frozen crushed heat adhesive resin having a particle size of more than 250 μm are not contained, the powder does not scatter too much when spraying the frozen crushed heat adhesive resin on one side of the paper, and the loss and processing due to the scattering do not occur. Adhesion to the peripheral part of the machine can be suppressed, and the heat- bonded paper can be prevented from becoming too thick.
Further, since the particle size and the adhesive strength have a correlation (smaller the adhesive strength is lower), an appropriate adhesive strength can be obtained by setting the particle size of the frozen pulverized thermal adhesive resin to 63 μm to 250 μm, and the product is frozen. Since the area of the portion covered with the crushed heat-adhesive resin is 40% to 50% of the total area, it is suitable for obstacle paper.
In addition, since the refrigerated and pulverized heat-adhesive resin is a saponified ethylene-vinyl acetate copolymer and has a melting point of 60 ° C. to 150 ° C., the adhesive strength is not affected by the change in water content, and the texture is impaired. Nor.
以下、実施例によって本発明の実施形態を説明する。 Hereinafter, embodiments of the present invention will be described with reference to examples.
図１は実施例に係る熱接着紙の接着面側の平面図、図２は実施例に係る熱接着紙の断面図である。
図１に示すとおり、実施例に係る熱接着紙は、紙シート基材１の接着面とする側に、粒径６３μｍ～１８０μｍの冷凍粉砕熱接着樹脂を、転写、散布、噴霧又は塗布等適宜の方法により非連続状態の島状に付着配置させたものである。
ここで、冷凍粉砕熱接着樹脂の粒径を６３μｍ～１８０μｍとしたのは、上述したとおり、化学粉砕熱接着樹脂に比べ冷凍粉砕熱接着樹脂の方が粒径のバラツキが大きいこと、粒径６３μｍ未満の冷凍粉砕熱接着樹脂が含まれていると接着面に冷凍粉砕熱接着樹脂を配置させる際に粉末飛散が多くなること、粒径６３μｍ未満の冷凍粉砕熱接着樹脂が含まれていると接着強度が低下することに加え、粒径の大きい冷凍粉砕熱接着樹脂が多く含まれていると熱接着紙が厚くなること、粒径の範囲を絞り過ぎると歩留まりが悪くなることを考慮したものである。
なお、熱接着紙が厚くなると良くない理由は、必要な長さの熱接着紙を販売用に巻き付けてロール状としたとき、そのロールが太くなり過ぎて陳列用什器のサイズ内に収まらなくなることがあるからである。
そのため、熱接着紙がある程度厚くなっても問題ない場合には、冷凍粉砕熱接着樹脂の粒径を６３μｍ～２５０μｍとしても良く、逆に熱接着紙の薄さが強く求められる場合には、冷凍粉砕熱接着樹脂の粒径を６３μｍ～１５０μｍとすることが考えられる。
FIG. 1 is a plan view of the adhesive surface side of the heat-bonded paper according to the embodiment, and FIG. 2 is a cross-sectional view of the heat-bonded paper according to the embodiment.
As shown in FIG. 1, in the heat-adhesive paper according to the embodiment, a frozen pulverized heat-adhesive resin having a particle size of 63 μm to 180 μm is appropriately transferred, sprayed, sprayed or applied on the side to be the adhesive surface of the paper
Here, the reason why the particle size of the frozen pulverized heat adhesive resin is set to 63 μm to 180 μm is that, as described above, the particle size of the frozen crushed heat adhesive resin has a larger variation than that of the chemically crushed heat adhesive resin, and the particle size is 63 μm. If less than the frozen crushed heat adhesive resin is contained, powder scattering increases when the frozen crushed heat adhesive resin is placed on the adhesive surface, and if the frozen crushed heat adhesive resin having a particle size of less than 63 μm is contained, the mixture adheres. In addition to the decrease in strength, the heat-bonded paper becomes thicker if it contains a large amount of frozen crushed heat-bonding resin with a large particle size, and the yield deteriorates if the particle size range is narrowed too much. be.
The reason why it is not good if the heat-bonded paper is thick is that when the heat-bonded paper of the required length is wrapped for sale into a roll, the roll becomes too thick to fit within the size of the display fixtures. Because there is.
Therefore, if there is no problem even if the heat-bonded paper becomes thick to some extent, the particle size of the frozen crushed heat-bonded resin may be 63 μm to 250 μm, and conversely, if the heat-bonded paper is strongly required to be thin, it is frozen. It is conceivable that the particle size of the pulverized heat-adhesive resin is 63 μm to 150 μm.
実施例に係る熱接着紙の製造方法（散布法）について説明する。
（１）熱接着樹脂を冷凍粉砕機で粉砕し、得られた粒状の冷凍粉砕熱接着樹脂をふるいにかけ、粒径６３μｍ～１８０μｍの冷凍粉砕熱接着樹脂を得る。
なお、熱接着樹脂としては、感熱性接着剤が使用できるが、好ましくは水分の変化によって左右されない接着力と風合を損なわない性状を有する疎水性のＬＤＰＥ系、ＥＶＡ系、変性ＥＶＡ系、ポリエステル系、ポリアミド系、変性ＰＥ系、アイオノマー系などが好適であり、用途に応じて融点６０℃～１５０℃の熱接着樹脂を選択する。
また、障子紙の場合は、ケン化エチレン酢酸ビニル共重合体よりなる感熱性接着剤が最も好適である。
The method of manufacturing the heat-bonded paper (spraying method) according to the embodiment will be described.
(1) The heat-adhesive resin is crushed by a freeze-crusher, and the obtained granular freeze-crushed heat-adhesive resin is sieved to obtain a freeze-crushed heat-adhesive resin having a particle size of 63 μm to 180 μm.
As the heat-adhesive resin, a heat-sensitive adhesive can be used, but it is preferable that the hydrophobic LDPE-based, EVA-based, modified EVA-based, and polyester have properties that do not impair the adhesive strength and texture that are not affected by changes in moisture. A system, a polyamide system, a modified PE system, an ionomer system, or the like is suitable, and a heat-adhesive resin having a melting point of 60 ° C. to 150 ° C. is selected depending on the application.
In the case of shoji paper, a heat-sensitive adhesive made of a saponified ethylene-vinyl acetate copolymer is most suitable.
（２）冷凍粉砕熱接着樹脂を散布装置により紙シート基材１の片側の面に散布し、図１に示すように、熱接着樹脂ドット２をまんべんなく分布するように配置させる。
なお、熱接着樹脂ドット２で覆われる部分の面積は用途によって異なるが、紙シート基材１の全面積の１０％～８０％であり、障子紙の場合は３０％～６０％、好ましくは４０％～５０％である。
また、紙シート基材１としては、紙、合成紙、紙や合成紙の片面、両面又は中間にフィルム等の層を設けてなる複合紙基材を使用することができるが、疎水性繊維を５％～１００％配合して、温度変化や湿度変化に対する寸法安定性を向上させたものが好ましい。
(2) The frozen pulverized heat-adhesive resin is sprayed on one surface of the paper
The area of the portion covered with the heat-
Further, as the paper
（３）熱接着樹脂ドット２を適宜の方法により加熱してその表面を溶融させ、熱接着樹脂メルト３とする。
そうすると、図２（ｂ）に示すように、熱接着樹脂メルト３の下部は部分的に紙シート基材１内に浸透して浸透層４を形成し、熱接着樹脂メルト３の上部は左側の半球形や右側の略球形を呈する。
なお、熱接着樹脂メルト３の形状はどのようなものでも良いが、溶融し過ぎて大部分が紙シート基材１に滲み込んだものは不適当である。
特に、障子紙の場合は接着される部分の面積が壁紙等と比べて小さいため、なるべく球形に近い形で形成されることが望ましいが、そのためには、熱接着樹脂ドット２の表面のみが溶融するように加熱したり、紙シート基材１側から加熱したりすると良い。
（４）熱接着樹脂メルト３が冷えて溶融部分が固まったら、紙シート基材１を巻き取り、出荷できる状態とする。
(3) The heat-
Then, as shown in FIG. 2B, the lower part of the heat-
The shape of the heat-
In particular, in the case of shoji paper, the area of the bonded portion is smaller than that of wallpaper, so it is desirable to form it in a shape as close to a sphere as possible, but for that purpose, only the surface of the heat-bonded
(4) When the heat-adhesive resin melt 3 cools and the melted portion hardens, the paper
実施例に係る熱接着紙の使用方法を説明する。
（１）熱接着紙を広げ必要に応じてカットする。また、アイロンを熱しておく。
（２）壁や障子等の所望の箇所に位置づけ、上方又は端部にアイロンを当てる。
（３）熱接着樹脂が溶けたらアイロンを外しアイロンが当たっていた箇所を押圧する。
（４）最初にアイロンを当てた部分の貼り付けが終わったら、隣接する箇所にアイロンを当て、少しずつずらしながらアイロンが当たっていた箇所を押圧していく。
（５）全部の貼り付けが終わったらアイロンを外しスイッチを切る。
A method of using the heat-bonded paper according to the embodiment will be described.
(1) Spread the heat-bonded paper and cut it if necessary. Also, keep the iron hot.
(2) Position it at a desired location such as a wall or shoji, and iron it above or at the end.
(3) When the heat-adhesive resin melts, remove the iron and press the part that was hit by the iron.
(4) After pasting the first ironed part, iron the adjacent part and press the ironed part while shifting it little by little.
(5) After pasting everything, remove the iron and turn off the switch.
１ 紙シート基材 ２ 熱接着樹脂ドット
３ 熱接着樹脂メルト ４ 浸透層
1 Paper
Claims (1)
前記冷凍粉砕熱接着樹脂を障子紙の片側の面に散布し、前記冷凍粉砕熱接着樹脂で覆われる部分の面積が前記障子紙の全面積の４０％～５０％となるように、熱接着樹脂ドットをまんべんなく分布するように配置させる工程と、
前記熱接着樹脂ドットを加熱して表面を溶融させ、下部が部分的に前記障子紙の内部に浸透し上部が半球形又は略球形を呈する熱接着樹脂メルトとする工程と、
前記熱接着樹脂メルトが冷えて溶融部分が固まった後に、前記障子紙を巻き取る工程からなる
ことを特徴とする熱接着障子紙の製造方法。 A heat-sensitive adhesive made of a saponified ethylene-vinyl acetate copolymer and having a melting point of 60 ° C. to 150 ° C. is crushed by a refrigerating crusher, and the obtained granular refrigerated pulverized heat-adhesive resin is sifted to obtain a minimum particle size. A process for obtaining a frozen pulverized heat-adhesive resin having a maximum particle size of 63 μm and a maximum particle size of 250 μm.
The frozen crushed heat adhesive resin is sprayed on one side of the shoji paper, and the area of the portion covered with the frozen crushed heat adhesive resin is 40% to 50% of the total area of the shoji paper. The process of arranging the dots so that they are evenly distributed,
A step of heating the heat-adhesive resin dots to melt the surface, and forming a heat-adhesive resin melt in which the lower part partially penetrates into the inside of the shoji paper and the upper part exhibits a hemispherical shape or a substantially spherical shape.
A method for producing heat-bonded shoji paper , which comprises a step of winding up the shoji paper after the heat-bonded resin melt has cooled and the melted portion has hardened .
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002363507A (en) | 2001-06-13 | 2002-12-18 | Tosoh Corp | Thermal adhesive sheet |
| JP2012245752A (en) | 2011-05-31 | 2012-12-13 | Nakamura Paper Co Ltd | Heat-bonding paper for shoji sliding screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62119284A (en) * | 1985-11-18 | 1987-05-30 | Nippon Synthetic Chem Ind Co Ltd:The | Hot-melt adhesive |
| JP2772249B2 (en) * | 1994-03-10 | 1998-07-02 | 株式会社中村製紙所 | Thermal adhesive paper |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002363507A (en) | 2001-06-13 | 2002-12-18 | Tosoh Corp | Thermal adhesive sheet |
| JP2012245752A (en) | 2011-05-31 | 2012-12-13 | Nakamura Paper Co Ltd | Heat-bonding paper for shoji sliding screen |
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