JPH09249862A - Adhesive for corrugated board - Google Patents
Adhesive for corrugated boardInfo
- Publication number
- JPH09249862A JPH09249862A JP5956796A JP5956796A JPH09249862A JP H09249862 A JPH09249862 A JP H09249862A JP 5956796 A JP5956796 A JP 5956796A JP 5956796 A JP5956796 A JP 5956796A JP H09249862 A JPH09249862 A JP H09249862A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- starch
- corrugated board
- water
- alkali
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ノーキャリア方式
によって得られる段ボール用接着剤に関し、特に保水
性、初期接着性及び流動性、又はさらに耐水性の改良さ
れた段ボール用接着剤に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated board adhesive obtained by a no-carrier method, and more particularly to a corrugated board adhesive having improved water retention, initial adhesion and fluidity, or further improved water resistance. .
【０００２】[0002]
【従来の技術】段ボール用接着剤は、従来ステインホー
ル方式によって調製されていた。このステインホール方
式は、使用する全澱粉の10〜20％程度を苛性ソーダ又は
苛性ソーダ及び加熱蒸気により完全糊化させたキャリア
部と、残りの澱粉を水に分散させたメイン部とを混合し
て糊液を調製するものである。しかしながら、このステ
インホール方式では、メイン部とキャリア部とを別々に
調製しなければならないこと、複雑な製糊装置を必要と
すること、製糊作業に熟練が必要であることなどの理由
により、製糊が非常に煩雑であった。2. Description of the Prior Art Adhesives for corrugated board have been conventionally prepared by a stain hole method. In this stain-hole method, about 10 to 20% of the total starch used is completely gelatinized with caustic soda or caustic soda and heating steam, and the main part in which the remaining starch is dispersed in water is mixed to paste. A liquid is prepared. However, in this stain hole method, because the main part and the carrier part have to be prepared separately, a complicated glue-making device is required, and skill is required for the glue-making operation. The glue making was very complicated.
【０００３】このため、ステインホール方式に代わり、
ノーキャリア方式により段ボール用接着剤を製糊する方
法が取られるようになってきた。ノーキャリア方式と
は、未糊化澱粉を１つのタンク内に分散、懸濁させた後
に、苛性ソーダなどのアルカリ成分を添加して未糊化澱
粉を膨潤させ、所定の粘度に達したら硼酸を加えて反応
を停止させ、一定時間混練することにより接着剤を調製
する方法である（Preparation of Corrugating Adhesiv
es, TAPPI PRESS 刊, P.34〜37参照）。Therefore, instead of the stain hole system,
A method of gluing an adhesive for corrugated board by a no-carrier method has come to be adopted. The no-carrier method is to disperse and suspend ungelatinized starch in one tank, then add an alkaline component such as caustic soda to swell the ungelatinized starch, and add boric acid when a predetermined viscosity is reached. Is a method of preparing an adhesive by stopping the reaction and kneading for a certain period of time (Preparation of Corrugating Adhesiv
es, TAPPI PRESS, P.34-37).
【０００４】しかし、このノーキャリア方式で調製した
従来の段ボール用接着剤は、前記ステインホール方式で
調製した接着剤と比べて、保水性、初期接着性、流動性
等の特性において一般的に劣っているため、高速コルゲ
ーターを使用した高速貼合への対応が困難であった。特
に、近年強化段ボールの使用が増大しているが、この強
化段ボールの製造には初期接着力が重要であり、その初
期接着力が劣ると、ライナーと中芯とを確実に接着させ
るために貼合速度を大幅に低下させなければならないと
いう問題が生じるため、初期接着性を改良した接着剤の
開発が待たれていた。However, the conventional adhesive for corrugated board prepared by the no-carrier method is generally inferior to the adhesive prepared by the stain hole method in properties such as water retention, initial adhesiveness and fluidity. Therefore, it was difficult to support high-speed bonding using a high-speed corrugator. In particular, the use of reinforced corrugated cardboard has been increasing in recent years, but the initial adhesive strength is important for the production of this reinforced corrugated board, and if the initial adhesive strength is poor, it is necessary to attach the liner to the core to ensure adhesion. Since there is a problem that the compounding speed must be significantly reduced, development of an adhesive having improved initial adhesiveness has been awaited.
【０００５】ステインホール方式による段ボール用接着
剤において、メイン部の機能を十分に発揮させるために
はキャリア部の機能が極めて重要であった。これは、キ
ャリア部がその保水機能により接着剤が紙内部へ浸透す
るのを調節する役目、及び接着剤が段ボール中芯に塗布
されてから加熱されるまでの間に澱粉が膨潤糊化するに
足る水を保持する役目を果たすからである。この考え方
は、澱粉を使った段ボール用接着剤に共通するものであ
る。したがって、キャリア部を持たないノーキャリア方
式による段ボール用接着剤は保水性が劣り、段ボール中
芯に接着剤を塗布した後水分不足となり、未糊化澱粉が
十分に糊化せず、段ボールの接着不良が発生し易いとい
う問題がある。In the adhesive for corrugated board by the stain hole method, the function of the carrier part is extremely important in order to fully exert the function of the main part. This is because the carrier part controls the penetration of the adhesive into the paper due to its water retention function, and the starch swells and gelatinizes between the time the adhesive is applied to the corrugated fiber core and the time it is heated. This is because it serves to retain sufficient water. This idea is common to cardboard adhesives that use starch. Therefore, no-carrier type corrugated board adhesive without a carrier part has poor water retention, water becomes insufficient after the adhesive is applied to the corrugated fiber core, and the non-gelatinized starch does not gelatinize sufficiently, and the corrugated board is adhered. There is a problem that defects are likely to occur.
【０００６】また、ノーキャリア方式は未糊化澱粉の膨
潤体を扱う製糊方式のため、接着剤のＢ型粘度／ＦＣＶ
（フォードカップ粘度を意味する。以下、ＦＣＶと記
す）比が一般的に大きく、したがって流動性が極端に悪
い。その解決策として、ＦＣＶを通常よりも小さくして
Ｂ型粘度を下げる方策が取られている。流動性が悪い
と、糊バット内の接着剤は、コルゲーターの輻射熱を受
けて糊玉の発生を起こし易くなる。糊玉の発生は、接着
剤の原単位を上げる他に糊ロールへの糊液の転移を邪魔
して、貼合不良の原因ともなる。Further, since the no-carrier method is a paste-making method that deals with a swollen body of ungelatinized starch, the B-type viscosity of the adhesive / FCV
(Means Ford cup viscosity; hereinafter referred to as FCV) The ratio is generally large, and therefore the fluidity is extremely poor. As a solution to this problem, a method of lowering the FCV than usual to lower the B-type viscosity has been taken. If the fluidity is poor, the adhesive in the glue vat easily receives the radiant heat of the corrugator to easily generate glue balls. The occurrence of glue balls not only raises the basic unit of the adhesive, but also interferes with the transfer of the glue liquid to the glue roll, which causes a bonding failure.
【０００７】また、強化段ボールに用いる接着剤には耐
水性が要求される場合が多く、さらに耐水性段ボールを
製造する場合に耐水性接着剤が必要とされる。一般に段
ボール用耐水接着剤は、段ボール用接着剤にアルカリ硬
化性の耐水化剤を配合して製造される。しかし、これま
でにノーキャリア方式の段ボール用接着剤に耐水化剤を
配合し、段ボール用耐水接着剤として使用することは稀
であった。その理由は、この段ボール用耐水接着剤を強
化段ボール又は耐水性段ボールに使用する場合には、前
述の場合と同様に初期接着性及び保水性が悪く、貼合速
度の大幅低下を余儀なくされるからである。Water resistance is often required for the adhesive used for the reinforced corrugated board, and a water resistant adhesive is required when manufacturing the water resistant corrugated board. Generally, a water-resistant adhesive for corrugated board is manufactured by mixing an adhesive for corrugated board with an alkali-curable waterproof agent. However, it has been rare that a no-carrier type corrugated board adhesive is blended with a water resistant agent to be used as a corrugated board water resistant adhesive. The reason is that when this water-resistant adhesive for corrugated board is used for reinforced corrugated board or water-resistant corrugated board, the initial adhesiveness and water retention are poor as in the case described above, and the bonding speed is unavoidably reduced. Is.
【０００８】[0008]
【発明が解決しようとする課題】本発明の課題は、以上
のような問題点を持つノーキャリア方式の段ボール用接
着剤において、保水性、初期接着性、流動性などの接着
剤特性を改善し、高速貼合に対応できる段ボール用接着
剤及び段ボール用耐水性接着剤を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to improve adhesive properties such as water retention, initial adhesiveness and fluidity in a carrier-free adhesive for corrugated board which has the above problems. The present invention provides a corrugated board adhesive and a water-resistant corrugated board adhesive that can be used for high-speed bonding.
【０００９】[0009]
【課題を解決するための手段】上記課題に鑑み鋭意研究
の結果、本発明者らは、ノーキャリア方式の段ボール用
接着剤において、α化澱粉を未糊化澱粉に混合してなる
加工澱粉を用いることにより、保水性、初期接着性、流
動性等が改善された、高速貼合にも対応できる段ボール
用接着剤が得られることを見出し、本発明を完成した。As a result of earnest research in view of the above problems, the present inventors have found that in a carrier-free adhesive for corrugated board, a modified starch prepared by mixing pregelatinized starch with non-gelatinized starch is used. The inventors have found that the use of the same makes it possible to obtain a corrugated board adhesive that has improved water retention, initial adhesiveness, fluidity, and the like and that can be used for high-speed bonding.
【００１０】即ち、本発明は、未糊化澱粉を水に分散さ
せ、アルカリ成分を加えて該未糊化澱粉を膨潤体となす
ノーキャリア方式によって製糊される段ボール用接着剤
において、前記未糊化澱粉に代えてα化澱粉0.5 〜30重
量％と未糊化澱粉70〜99.5重量％とを混合してなる加工
澱粉を用いたことを特徴とする段ボール用接着剤であ
る。また、本発明は、上記段ボール用接着剤に、さらに
アルカリ硬化性耐水化剤を配合してなることを特徴とす
る段ボール用接着剤である。That is, the present invention relates to a corrugated board adhesive prepared by dispersing a non-gelatinized starch in water and adding an alkali component to make the non-gelatinized starch into a swelling body by a no-carrier method. An adhesive for corrugated boards, characterized in that, in place of the gelatinized starch, modified starch made by mixing 0.5 to 30% by weight of pregelatinized starch and 70 to 99.5% by weight of non-gelatinized starch is used. Further, the present invention is an adhesive for corrugated board, which is characterized in that the above adhesive for corrugated board is further blended with an alkali-curable water resistant agent.
【００１１】[0011]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明の段ボール用接着剤は、加工澱粉を原料とし、ノ
ーキャリア方式に準拠して製造することができる。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
The adhesive for corrugated board of the present invention can be produced from modified starch as a raw material in accordance with the no carrier method.
【００１２】本発明で使用する加工澱粉は、未糊化澱粉
とα化澱粉とを混合することにより得られる。未糊化澱
粉としては、特に限定されることなく、一般に用いられ
る澱粉を使用することができる。例えば、コーンスター
チ、小麦澱粉等の地上澱粉や、馬鈴薯、タピオカ澱粉等
の地下澱粉などが挙げられる。さらには、エーテル化澱
粉、エステル化澱粉等の化工澱粉も使用することができ
る。The modified starch used in the present invention is obtained by mixing ungelatinized starch and pregelatinized starch. The non-gelatinized starch is not particularly limited, and commonly used starch can be used. Examples thereof include ground starch such as corn starch and wheat starch, and underground starch such as potato and tapioca starch. Furthermore, modified starch such as etherified starch and esterified starch can also be used.
【００１３】α化澱粉としては、特に限定されることな
く、上記未糊化澱粉を公知の方法、例えばドラムドライ
ヤー法、エスクトルーダー法、煮沸乾燥法等でα化する
ことにより得られるものを用いることができる。このα
化澱粉を未糊化澱粉とあらかじめ混合して加工澱粉とな
し、ノーキャリア方式の製糊工程で使用すればよいた
め、ステインホール方式のように製糊工程でメイン部と
キャリア部とを別々に調製しなければならないという煩
雑さがない。The pregelatinized starch is not particularly limited, and those obtained by pregelatinizing the above non-gelatinized starch by a known method such as a drum dryer method, an escrowder method, or a boiling drying method can be used. Can be used. This α
The modified starch is mixed with the non-gelatinized starch in advance to form the processed starch, which can be used in the paste making process of the no-carrier method, so that the main part and the carrier part are separated in the paste making process like the stain hole method. There is no complexity of having to prepare.
【００１４】加工澱粉中におけるα化澱粉の混合率は、
0.5 〜30重量％であることが必要であり、１〜20重量％
であるのが好ましい。このα化澱粉の混合率が0.5 重量
％未満であると、未糊化澱粉だけを使用した場合の保水
性、初期接着性と大差がなく、接着剤の改良に乏しいも
のとなる。また、混合率が30重量％程度で保水性、初期
接着性の改良の効果がほぼ上限に達するため、経済性を
考慮すると30重量％以下であることを要する。The mixing ratio of the pregelatinized starch in the processed starch is
Must be 0.5-30% by weight, 1-20% by weight
It is preferred that If the mixing ratio of this pregelatinized starch is less than 0.5% by weight, there is no great difference in water retention and initial adhesiveness when only non-gelatinized starch is used, resulting in poor improvement of the adhesive. Further, when the mixing ratio is about 30% by weight, the effect of improving water retention and initial adhesiveness reaches almost the upper limit, so that it is required to be 30% by weight or less in consideration of economical efficiency.
【００１５】α化澱粉の粘度は、アルカリブラベンダー
アミログラム法により測定して50〜1600BUであるのが好
ましく、特に100 〜900 BUであるのが好ましい。粘度が
50BU未満であると、接着剤に保水性を付与する能力が極
端に低下し、初期接着力も低下する。保水性及び初期接
着性を改良するには、α化澱粉の混合率を大きくする必
要があり、経済的に不利となる。一方、粘度が1600BUを
超えると、α化澱粉の粘度によりＢ型粘度が高くなり、
接着剤の流動性が悪くなる。流動性を改良するには、α
化澱粉の混合率を小さくする必要があり、保水性及び初
期接着性の改良が困難となる。The viscosity of the pregelatinized starch is preferably 50 to 1600 BU, particularly preferably 100 to 900 BU, as measured by the alkali Brabender amylogram method. Viscosity
If it is less than 50 BU, the ability to impart water retention to the adhesive is extremely reduced and the initial adhesive strength is also reduced. In order to improve the water retention and the initial adhesiveness, it is necessary to increase the mixing ratio of the pregelatinized starch, which is economically disadvantageous. On the other hand, when the viscosity exceeds 1600 BU, the B-type viscosity increases due to the viscosity of the pregelatinized starch,
The fluidity of the adhesive becomes poor. To improve liquidity, α
It is necessary to reduce the mixing ratio of modified starch, which makes it difficult to improve water retention and initial adhesiveness.
【００１６】上記アルカリブラベンダーアミログラム法
による測定は、次のようにして実施する。乾燥重量で45
ｇのα化澱粉をビーカーに取り、同量のエチルアルコー
ルを分散剤として該α化澱粉に均一に含浸させる。次い
で純水350 ｇを加え、素早く撹拌してα化澱粉を溶解さ
せる。直ちにブラベンダーアミログラムの容器（ピンタ
イプ）に移し、さらに純水を加え全量を483 ｇに調整し
てブラベンダーアミログラムを始動させる。温度を40℃
に保持するようにセットして、40℃になったら20重量％
の水酸化ナトリウム溶液17ｇを添加する。添加30分後の
ブラベンダー粘度（BU）を、α化澱粉粘度とする。この
アルカリブラベンダーアミログラム法では、カートリッ
ジ 350cm−ｇを使用し、回転数75rpm の条件で測定す
る。The measurement by the above-mentioned alkali Brabender amylogram method is carried out as follows. 45 by dry weight
g of pregelatinized starch is placed in a beaker, and the same amount of ethyl alcohol is used as a dispersant to uniformly impregnate the pregelatinized starch. Next, 350 g of pure water is added, and the mixture is rapidly stirred to dissolve the pregelatinized starch. Immediately transfer to a Brabender amylogram container (pin type), further add pure water to adjust the total amount to 483 g and start the Brabender amylogram. Temperature up to 40 ° C
20% by weight when the temperature reaches 40 ° C.
17 g of sodium hydroxide solution in. The Brabender viscosity (BU) 30 minutes after the addition is defined as the viscosity of pregelatinized starch. In this alkaline Brabender amylogram method, a cartridge of 350 cm-g is used and the measurement is carried out under the condition of a rotation speed of 75 rpm.
【００１７】本発明の段ボール用接着剤は、上記加工澱
粉を用いたノーキャリア方式によって製造するが、ノー
キャリア方式自体は通常の方式であってよい。具体的に
は、上記加工澱粉を水に分散、懸濁させた後に、アルカ
リ成分を添加して未糊化澱粉を膨潤させ、所定の粘度に
達したら硼酸を加えて反応を停止させ、一定時間混練す
る。加工澱粉を水に分散、懸濁させる場合、倍水率（接
着剤中の全水分量／全澱粉量）は2.2 〜４であるのが好
ましい。また、このときの水の温度は35〜45℃であるの
が好ましい。The corrugated board adhesive of the present invention is produced by the no-carrier method using the above-mentioned modified starch, but the no-carrier method itself may be a usual method. Specifically, after dispersing and suspending the processed starch in water, an alkali component is added to swell the non-gelatinized starch, and when a predetermined viscosity is reached, boric acid is added to stop the reaction for a certain period of time. Knead. When the processed starch is dispersed or suspended in water, the water doubling ratio (total water content in adhesive / total starch content) is preferably 2.2 to 4. The temperature of the water at this time is preferably 35 to 45 ° C.
【００１８】添加するアルカリ成分としては、特に限定
されず、水酸化ナトリウム、水酸化カリウム、水酸化カ
ルシウム、水酸化マグネシウムなどが挙げられるが、コ
スト面から水酸化ナトリウムが好ましい。アルカリ成分
の添加量は、加工澱粉に対して２〜４重量％程度である
のが好ましい。アルカリ成分の添加は、ある程度の時
間、具体的には５〜30分程度かけて行うのが好ましい。
懸濁した加工澱粉にアルカリ成分を添加することより、
加工澱粉中の未糊化澱粉を膨潤させることができる。The alkali component to be added is not particularly limited, and examples thereof include sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, etc., but sodium hydroxide is preferable from the viewpoint of cost. The amount of the alkaline component added is preferably about 2 to 4% by weight based on the processed starch. It is preferable to add the alkaline component over a certain period of time, specifically about 5 to 30 minutes.
By adding an alkaline component to the suspended processed starch,
The non-gelatinized starch in the modified starch can be swollen.
【００１９】膨潤の程度は、粘度を測定することにより
判断することができる。粘度の測定にはいかなる粘度計
を使用してもよいが、再現性があり、フォードカップ粘
度（ＦＣＶ）及びＢ型粘度と相関性の高い粘度計を使用
するのが好ましい。所望の粘度に達したら硼酸を加え
る。このときの硼酸の添加量は、加工澱粉に対して１〜
５％程度であるのが好ましい。硼酸を加えたら、５〜30
分程度、好ましくは５〜10分程度混練し、本発明の段ボ
ール用接着剤を得る。The degree of swelling can be judged by measuring the viscosity. Although any viscometer may be used to measure the viscosity, it is preferable to use a viscometer that is reproducible and has a high correlation with Ford cup viscosity (FCV) and B type viscosity. When the desired viscosity is reached add boric acid. The addition amount of boric acid at this time is 1 to the processed starch.
It is preferably about 5%. 5-30 if boric acid is added
For about 5 minutes, preferably about 5 to 10 minutes, to obtain the adhesive for corrugated board of the present invention.
【００２０】本発明では、以上説明した段ボール用接着
剤に、さらにアルカリ硬化性耐水化剤を配合することに
より、初期接着性、保水性及び流動性に優れた段ボール
用耐水性接着剤を得ることができる。In the present invention, a water-resistant adhesive for corrugated board excellent in initial adhesiveness, water retention and fluidity is obtained by further adding an alkali-curable water-proofing agent to the above-mentioned corrugated board adhesive. You can
【００２１】アルカリ硬化性耐水化剤としては、レゾル
シノール−ホルムアルデヒド樹脂、フェノール−ホルム
アルデヒド樹脂、尿素−ホルムアルデヒド樹脂、ケトン
−ホルムアルデヒド樹脂等の樹脂を用いることができ
る。アルカリ硬化性耐水化剤の加工澱粉に対する配合量
は、２〜16重量％であるのが好ましい。このアルカリ硬
化性耐水化剤は、製糊工程のいかなる段階で加えてもよ
いが、得られる接着剤の耐水性能を考慮すると、製糊途
中ではなく最終段階で添加するのが好ましい。Resins such as resorcinol-formaldehyde resin, phenol-formaldehyde resin, urea-formaldehyde resin and ketone-formaldehyde resin can be used as the alkali-curable waterproofing agent. The amount of the alkali-curable waterproofing agent added to the processed starch is preferably 2 to 16% by weight. The alkali-curable water-proofing agent may be added at any stage of the sizing process, but considering the water resistance of the resulting adhesive, it is preferable to add it at the final stage, not during the sizing process.
【００２２】このようにして得られる段ボール用耐水性
接着剤を用いると、従来のノーキャリア方式の耐水性接
着剤では不可能であった、強化段ボールや耐水性段ボー
ルの高速貼合が可能になる。When the water-resistant adhesive for corrugated board obtained in this way is used, high-speed bonding of reinforced corrugated board or water-resistant corrugated board, which has been impossible with conventional carrier-free water-resistant adhesives, becomes possible. .
【００２３】[0023]
【実施例】以下、実施例を挙げて本発明を更に具体的に
説明するが、本発明の範囲はこれらの実施例に限定され
るものではない。また、実施例中の「部」は重量部を表
すものとする。EXAMPLES The present invention will be described in more detail with reference to examples, but the scope of the present invention is not limited to these examples. Moreover, "part" in an Example shall represent a weight part.
【００２４】（実施例１）アルカリブラベンダーアミロ
グラム法による粘度が150 BUのα化澱粉200 部と、コー
ンスターチ800 部とを混合してなる加工澱粉1000部を40
℃の温水3150部に懸濁させた後、15％水酸化ナトリウム
溶液188 部を15分かけて添加した。この時点では未だ粘
度の発現はなく、ノークロス粘度計（Ｍ８Ｂ型）で経時
的に測定を続け、粘度の発現を待った。水酸化ナトリウ
ム溶液添加終了35分後に、ノークロス粘度計設定値（5.
5 秒）に到達した。到達と同時に硼酸12.9部を添加し、
さらに５分間撹拌して、段ボール用接着剤とした。(Example 1) 40 parts of processed starch 1000 parts obtained by mixing 200 parts of pregelatinized starch having a viscosity of 150 BU by the alkali Brabender amylogram method and 800 parts of corn starch
After suspending in 3150 parts of warm water at ℃, 188 parts of 15% sodium hydroxide solution was added over 15 minutes. At this point of time, the viscosity did not yet develop, and the measurement was continued with a no-cross viscometer (M8B type) over time to wait for the viscosity to develop. 35 minutes after the addition of the sodium hydroxide solution, the setting value of the No-Cross viscometer (5.
5 seconds) has been reached. Upon arrival, add 12.9 parts of boric acid,
The mixture was further stirred for 5 minutes to obtain a cardboard adhesive.
【００２５】得られた接着剤の流動性、初期接着性、常
態接着力及び保水性を測定した。流動性の測定は、フォ
ードカップ粘度（ＦＣＶ）及びＢ型粘度を測定し、Ｂ型
粘度／ＦＣＶ比を算出することにより行った。ＦＣＶ
は、東洋テスター工業(株)製のフォードカップ（水10
秒）により測定し、Ｂ型粘度は、東京計器製の回転粘度
計（型：ＢＭ型）を用いて60rpm で測定した。The fluidity, initial adhesiveness, normal adhesive strength and water retention of the obtained adhesive were measured. The fluidity was measured by measuring the Ford cup viscosity (FCV) and the B type viscosity and calculating the B type viscosity / FCV ratio. FCV
Is a Ford cup (water 10
The B-type viscosity was measured at 60 rpm using a rotational viscometer (type: BM type) manufactured by Tokyo Keiki.
【００２６】初期接着性は、以下のようにして測定し
た。50mm×85mmの大きさの片面段ボール（原紙構成：レ
ンゴーＲＫＡ280 ｇ／北陽強化200 ｇ）に、絶乾５ｇ／
ｍ2 −片面の上記段ボール用接着剤をロールコーターで
塗布した。135 ℃のプレートヒーター上にライナー（原
紙：レンゴーＲＫＡ280 ｇ）を置き、段ボール用接着剤
を塗布した上記片面段ボールをこのライナーの上に重
ね、１kg／42.5cm2 の加重をかけて５秒間加熱圧着し
た。加熱圧着後、直ちにハンディピンテスタＡＳＴ−50
（(株)あさひ総研製）によりその強度を測定した。The initial adhesiveness was measured as follows. 5mm / 50g x 85mm single-sided cardboard (base paper composition: Rengo RKA 280 g / Hokuyo reinforced 200 g)
m 2 - and the one surface of the corrugating adhesive is applied by a roll coater. Place a liner (base paper: Rengo RKA 280 g) on a plate heater at 135 ° C, stack the above-mentioned single-sided corrugated board coated with an adhesive for corrugated board on this liner, apply a load of 1 kg / 42.5 cm 2 and heat press bond for 5 seconds. did. Handy pin tester AST-50 immediately after thermocompression bonding
The strength was measured by (manufactured by Asahi Soken Co., Ltd.).
【００２７】常態接着力の測定は、初期接着性の場合と
同様にして加熱圧着した後、温度20℃、相対湿度65％の
状態に24時間放置し、次いでリングクラッシュテスター
（日本ＴＭＣ(株)製）でその強度を測定することにより
行った。保水性の測定は、125 ｇ／ｍ2 の中芯原紙のフ
ェルト面に上記段ボール用接着剤0.5 mlを滴下し、接着
剤がワイヤー面へ浸み出すまでの時間を計測することに
より行った。各々の測定結果を表１に示す。The normal-state adhesive strength was measured by thermocompression bonding in the same manner as in the case of the initial adhesiveness, then leaving it at a temperature of 20 ° C. and a relative humidity of 65% for 24 hours, and then using a ring crush tester (Japan TMC Co., Ltd.). Manufactured) to measure its strength. The water retention was measured by dropping 0.5 ml of the above corrugated board adhesive onto the felt surface of 125 g / m 2 core raw paper and measuring the time until the adhesive leached to the wire surface. Table 1 shows the measurement results.
【００２８】（実施例２）アルカリブラベンダーアミロ
グラム法による粘度が400 BUのα化澱粉100 部と、コー
ンスターチ900 部とを混合してなる加工澱粉1000部を調
製し、実施例１と同様の手順で段ボール用接着剤を製造
し、同様の測定を行った。その結果を表１に示す。Example 2 1000 parts of modified starch prepared by mixing 100 parts of pregelatinized starch having a viscosity of 400 BU by the alkali Brabender amylogram method and 900 parts of corn starch was prepared, and the same procedure as in Example 1 was performed. Then, an adhesive for corrugated board was manufactured, and the same measurement was performed. Table 1 shows the results.
【００２９】（実施例３）アルカリブラベンダーアミロ
グラム法による粘度が800 BUのα化澱粉50部と、コーン
ターチ950 部とを混合してなる加工澱粉1000部を調製
し、実施例１と同様の手順で段ボール用接着剤を製造
し、同様の測定を行った。その結果を表１に示す。Example 3 1000 parts of modified starch prepared by mixing 50 parts of pregelatinized starch having a viscosity of 800 BU by the alkali Brabender amylogram method and 950 parts of corn starch was prepared, and the same procedure as in Example 1 was performed. Then, an adhesive for corrugated board was manufactured, and the same measurement was performed. Table 1 shows the results.
【００３０】（比較例１）コーンスターチ1000部のみを
用いて、実施例１と同様の手順で段ボール用接着剤を製
造し、同様の測定を行った。その結果を表１に示す。(Comparative Example 1) Using only 1000 parts of cornstarch, a corrugated board adhesive was produced in the same procedure as in Example 1, and the same measurement was carried out. Table 1 shows the results.
【００３１】（比較例２）アルカリブラベンダーアミロ
グラム法による粘度が400 BUのα化澱粉３部と、コーン
ターチ997 部とを混合してなる加工澱粉1000部を調製
し、実施例１と同様の手順で段ボール用接着剤を製造
し、同様の測定を行った。その結果を表１に示す。Comparative Example 2 1000 parts of modified starch prepared by mixing 3 parts of pregelatinized starch having a viscosity of 400 BU by the alkali Brabender amylogram method and 997 parts of corn starch was prepared, and the same procedure as in Example 1 was performed. Then, an adhesive for corrugated board was manufactured, and the same measurement was performed. Table 1 shows the results.
【００３２】（比較例３）アルカリブラベンダーアミロ
グラム法による粘度が100 BUのα化澱粉350 部と、コー
ンターチ650 部とを混合してなる加工澱粉1000部を調製
し、実施例１と同様の手順で段ボール用接着剤を製造
し、同様の測定を行った。その結果を表１に示す。Comparative Example 3 1000 parts of modified starch prepared by mixing 350 parts of pregelatinized starch having a viscosity of 100 BU by the alkali Brabender amylogram method and 650 parts of corn starch was prepared, and the same procedure as in Example 1 was performed. Then, an adhesive for corrugated board was manufactured, and the same measurement was performed. Table 1 shows the results.
【００３３】（比較例４）アルカリブラベンダーアミロ
グラム法による粘度が20BUのα化澱粉200 部と、コーン
ターチ800 部とを混合してなる加工澱粉1000部を調製
し、実施例１と同様の手順で段ボール用接着剤を製造
し、同様の測定を行った。その結果を表１に示す。Comparative Example 4 1000 parts of modified starch prepared by mixing 200 parts of pregelatinized starch having a viscosity of 20 BU according to the alkali Brabender amylogram method and 800 parts of corn starch was prepared and prepared in the same manner as in Example 1. An adhesive for corrugated board was manufactured and the same measurement was performed. Table 1 shows the results.
【００３４】[0034]
【表１】 [Table 1]
【００３５】表１から明らかなように、α化澱粉を未糊
化澱粉に混合した加工澱粉を使用して得られた接着剤
は、初期接着性、保水性及び流動性が改良されている。
比較例３については、初期接着性、保水性及び流動性の
改良は見られるが、α化澱粉の混合率を30重量％より増
やしても際立った改良にはならず、α化澱粉の混合率の
増加により経済的に好ましくないものとなる。As is clear from Table 1, the adhesive obtained by using the modified starch prepared by mixing the pregelatinized starch with the non-gelatinized starch has improved initial adhesiveness, water retention and fluidity.
Regarding Comparative Example 3, although the initial adhesion, water retention and fluidity were improved, even if the mixing ratio of the pregelatinized starch was increased to more than 30% by weight, the improvement was not remarkable, and the mixture ratio of the pregelatinized starch was not increased. It becomes economically unfavorable due to the increase of.
【００３６】（実施例４）アルカリブラベンダーアミロ
グラム法による粘度が400 BUのα化澱粉100 部と、コー
ンスターチ900 部とを混合してなる加工澱粉1000部を調
製し、実施例１と同様の手順で段ボール用接着剤を製造
した。この段ボール用接着剤に、上記加工澱粉1000部の
10重量％に相当する量のケトン樹脂（商品名：耐水化剤
Ｆ，王子コーンスターチ(株)製）を加え、段ボール用耐
水性接着剤を製造した。得られた耐水性接着剤の流動
性、初期接着性、常態接着力、耐水接着力及び保水性を
測定した。流動性及び保水性の測定は、実施例１と同様
にして行った。Example 4 1000 parts of modified starch prepared by mixing 100 parts of pregelatinized starch having a viscosity of 400 BU by the alkali Brabender amylogram method and 900 parts of corn starch were prepared, and the same procedure as in Example 1 was performed. Manufactured an adhesive for corrugated board. This adhesive for corrugated board contains 1000 parts of the above processed starch.
An amount of ketone resin (trade name: waterproofing agent F, manufactured by Oji Cornstarch Co., Ltd.) corresponding to 10% by weight was added to produce a waterproof adhesive for corrugated board. The fluidity, the initial adhesiveness, the normal state adhesive strength, the water resistant adhesive strength and the water retention of the obtained water resistant adhesive were measured. The fluidity and water retention were measured in the same manner as in Example 1.
【００３７】初期接着性は、以下のようにして測定し
た。50mm×85mmの大きさの片面段ボール（原紙構成：本
州ＳＫＴ280 ｇ／北陽耐水200 ｇ）に、絶乾10ｇ／ｍ2
−片面の上記段ボール用接着剤をロールコーターで塗布
した。175 ℃のプレートヒーター上にライナー（原紙：
本州ＳＫＴ280 ｇ）を置き、段ボール用接着剤を塗布し
た上記片面段ボールをこのライナーの上に重ね、１kg／
42.5cm2 の加重をかけて５秒間加熱圧着した。加熱圧着
後、直ちにハンディピンテスタＡＳＴ−50（(株)あさひ
総研製）によりその強度を測定した。The initial adhesiveness was measured as follows. 50 g x 85 mm single-sided corrugated board (base paper composition: Honshu SKT 280 g / Hokuyo water resistance 200 g), 10 g / m 2 of absolute dryness
-The above one-sided cardboard adhesive was applied with a roll coater. Liner (base paper:
Honshu SKT 280 g) is placed and the above single-sided corrugated board coated with an adhesive for corrugated board is placed on this liner and 1 kg /
A load of 42.5 cm 2 was applied, and thermocompression bonding was performed for 5 seconds. Immediately after the thermocompression bonding, the strength was measured by a handy pin tester AST-50 (manufactured by Asahi Soken Co., Ltd.).
【００３８】常態接着力及び耐水接着力の測定は、初期
接着性の場合と同様にして加熱圧着した後、温度20℃、
相対湿度65％の状態に24時間放置し、次いでリングクラ
ッシュテスター（日本ＴＭＣ(株)製）でその強度を測定
することにより行った。但し、耐水接着力は、加熱圧着
した後、20℃、65％相対湿度の条件下で24時間放置し、
次いで20℃の水中に１時間浸水してから上記測定に供す
ることより測定した。結果を表２に示す。The normal-state adhesive strength and the water-resistant adhesive strength were measured by thermocompression bonding in the same manner as in the case of the initial adhesiveness, and then at a temperature of 20 ° C.
It was left for 24 hours in the state of relative humidity of 65%, and then the strength was measured by a ring crush tester (manufactured by Japan TMC Co., Ltd.). However, the water-resistant adhesive strength, after thermocompression bonding, left for 24 hours under the condition of 20 ℃, 65% relative humidity,
Then, it was measured by immersing it in water at 20 ° C. for 1 hour and then subjecting it to the above measurement. Table 2 shows the results.
【００３９】（比較例５）比較例１の段ボール用接着剤
に、未糊化澱粉1000部の10重量％に相当する量のケトン
樹脂を加え、段ボール用耐水性接着剤を製造した。得ら
れた接着剤について、実施例４と同様の評価を行った。
その結果を表２に示す。Comparative Example 5 To the corrugated board adhesive of Comparative Example 1, a ketone resin in an amount corresponding to 10% by weight of 1000 parts of ungelatinized starch was added to produce a corrugated board waterproof adhesive. The same evaluation as in Example 4 was performed on the obtained adhesive.
Table 2 shows the results.
【００４０】[0040]
【表２】 [Table 2]
【００４１】表２より、本発明の加工澱粉から得られた
接着剤を用いた耐水性接着剤は、未糊化澱粉のみから得
られた耐水性接着剤と比較して、流動性、初期接着性、
耐水接着力及び保水性に優れていることが判る。From Table 2, it can be seen that the water-resistant adhesive using the adhesive obtained from the modified starch of the present invention has better fluidity and initial adhesion as compared with the water-resistant adhesive obtained from only non-gelatinized starch. sex,
It can be seen that the water-resistant adhesive strength and water retention are excellent.
【００４２】[0042]
【発明の効果】本発明によれば、ノーキャリア方式で得
られる段ボール用接着剤であって、保水性、初期接着性
及び流動性に優れ、高速貼合に対応し得る段ボール用接
着剤及び段ボール用耐水性接着剤が得られる。EFFECT OF THE INVENTION According to the present invention, a corrugated board adhesive obtained by a carrierless system, which is excellent in water retention, initial adhesiveness and fluidity, and which can be used for high-speed bonding, and corrugated board. A water resistant adhesive for use is obtained.
Claims (4)
分を加えて該未糊化澱粉を膨潤体となすノーキャリア方
式によって製糊される段ボール用接着剤において、前記
未糊化澱粉に代えてα化澱粉0.5 〜30重量％と未糊化澱
粉70〜99.5重量％とを混合してなる加工澱粉を用いたこ
とを特徴とする段ボール用接着剤。1. A non-gelatinized starch in which a non-gelatinized starch is dispersed in water and an alkali component is added to the non-gelatinized starch to form a swelling body by a no carrier method. An adhesive for corrugated board, which is characterized in that a modified starch prepared by mixing 0.5 to 30% by weight of pregelatinized starch and 70 to 99.5% by weight of non-gelatinized starch is used.
ンダーアミログラム法で50BU〜1600BUの範囲にあること
を特徴とする、請求項１記載の段ボール用接着剤。2. The adhesive for corrugated board according to claim 1, wherein the viscosity of the pregelatinized starch is in the range of 50 BU to 1600 BU according to the alkali Brabender amylogram method.
らにアルカリ硬化性耐水化剤を配合してなることを特徴
とする段ボール用接着剤。3. An adhesive for corrugated board, comprising the adhesive for corrugated board according to claim 1 further blended with an alkali-curable waterproofing agent.
が、原料として使用した加工澱粉に対して２〜16重量％
であることを特徴とする、請求項３記載の段ボール用接
着剤。4. The amount of the alkali-curable waterproofing agent mixed is 2 to 16% by weight based on the processed starch used as a raw material.
The adhesive for corrugated board according to claim 3, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5956796A JPH09249862A (en) | 1996-03-15 | 1996-03-15 | Adhesive for corrugated board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5956796A JPH09249862A (en) | 1996-03-15 | 1996-03-15 | Adhesive for corrugated board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09249862A true JPH09249862A (en) | 1997-09-22 |
Family
ID=13116956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5956796A Pending JPH09249862A (en) | 1996-03-15 | 1996-03-15 | Adhesive for corrugated board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09249862A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002226810A (en) * | 2001-01-31 | 2002-08-14 | Sanwa Denpun Kogyo Kk | Adhesive for high-temperature, high-speed type corrugated cardboard |
| JP2007284562A (en) * | 2006-04-17 | 2007-11-01 | Oji Cornstarch Co Ltd | Adhesive for corrugated cardboard, using alkali-adsorbed starch |
| JP2007284568A (en) * | 2006-04-17 | 2007-11-01 | Oji Cornstarch Co Ltd | Adhesive for laminating corrugated cardboard, and corrugated cardboard using the same |
| JP2009138128A (en) * | 2007-12-07 | 2009-06-25 | Oji Cornstarch Co Ltd | Formaldehyde-free and water-resistant adhesive for corrugated cardboard |
| JP2009226898A (en) * | 2008-03-25 | 2009-10-08 | Panasonic Electric Works Co Ltd | Humidity-adjustable panel |
| JP2019214716A (en) * | 2018-06-06 | 2019-12-19 | 王子ホールディングス株式会社 | Sticking speed improver and method for improving |
-
1996
- 1996-03-15 JP JP5956796A patent/JPH09249862A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002226810A (en) * | 2001-01-31 | 2002-08-14 | Sanwa Denpun Kogyo Kk | Adhesive for high-temperature, high-speed type corrugated cardboard |
| JP4691260B2 (en) * | 2001-01-31 | 2011-06-01 | 三和澱粉工業株式会社 | High temperature and high speed corrugated adhesive |
| JP2007284562A (en) * | 2006-04-17 | 2007-11-01 | Oji Cornstarch Co Ltd | Adhesive for corrugated cardboard, using alkali-adsorbed starch |
| JP2007284568A (en) * | 2006-04-17 | 2007-11-01 | Oji Cornstarch Co Ltd | Adhesive for laminating corrugated cardboard, and corrugated cardboard using the same |
| JP2009138128A (en) * | 2007-12-07 | 2009-06-25 | Oji Cornstarch Co Ltd | Formaldehyde-free and water-resistant adhesive for corrugated cardboard |
| JP2009226898A (en) * | 2008-03-25 | 2009-10-08 | Panasonic Electric Works Co Ltd | Humidity-adjustable panel |
| JP2019214716A (en) * | 2018-06-06 | 2019-12-19 | 王子ホールディングス株式会社 | Sticking speed improver and method for improving |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5393336A (en) | Water resistant high amylose corrugating adhesive with improved runnability | |
| JP4401787B2 (en) | Adhesive paste composition based on starch | |
| NO763902L (en) | ||
| JP3933742B2 (en) | Adhesive for corrugated material using tapioca fiber | |
| US3658733A (en) | Phenol aldehyde water-resistant starch-based adhesives and their preparation | |
| US3487033A (en) | Single ungelatinized starch-component-corrugating adhesive | |
| US20060240219A1 (en) | Corrugating adhesives for bonding coated papers and methods for bonding coated paper | |
| US2884389A (en) | Method of preparing an adhesive which comprises reacting gelatinized and ungelatinized starch, a phenolic compound and an aldehyde | |
| US4272295A (en) | Starch-based adhesives | |
| JPH09249862A (en) | Adhesive for corrugated board | |
| US4912209A (en) | Starch based corrugating adhesives | |
| US7033426B2 (en) | Starch-based corrugating adhesive compositions | |
| US2463148A (en) | Waterproof adhesive and bonding process | |
| JPH0637611B2 (en) | High solids cardboard adhesive | |
| JP4380824B2 (en) | Corrugated adhesive | |
| JPH0138146B2 (en) | ||
| JP2646135B2 (en) | Adhesive for cardboard | |
| US4978411A (en) | Process of using starch based corrugating adhesives | |
| SU862834A3 (en) | Glue composition for corrugated board | |
| EP0038627B1 (en) | An adhesive containing starch and a process for producing it | |
| JPS59145266A (en) | Water-resistant adhesive for corrugated board | |
| JP4817538B2 (en) | Corrugated adhesive | |
| JP3517317B2 (en) | Starch paste for laminating cardboard | |
| JPS63251486A (en) | Adhesive for corrugated board | |
| JPH08134420A (en) | Adhesive for corrugated board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Effective date: 20050617 Free format text: JAPANESE INTERMEDIATE CODE: A971007 |
|
| A131 | Notification of reasons for refusal |
Effective date: 20050621 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20050819 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20070904 |
|
| A521 | Written amendment |
Effective date: 20071105 Free format text: JAPANESE INTERMEDIATE CODE: A523 |
|
| A911 | Transfer of reconsideration by examiner before appeal (zenchi) |
Effective date: 20080213 Free format text: JAPANESE INTERMEDIATE CODE: A911 |
|
| A912 | Removal of reconsideration by examiner before appeal (zenchi) |
Effective date: 20080321 Free format text: JAPANESE INTERMEDIATE CODE: A912 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20101021 |