JPS5846234B2 - Adhesive for corrugator - Google Patents
Adhesive for corrugatorInfo
- Publication number
- JPS5846234B2 JPS5846234B2 JP54057391A JP5739179A JPS5846234B2 JP S5846234 B2 JPS5846234 B2 JP S5846234B2 JP 54057391 A JP54057391 A JP 54057391A JP 5739179 A JP5739179 A JP 5739179A JP S5846234 B2 JPS5846234 B2 JP S5846234B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- adhesive
- water
- corrugator
- resins
- 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.)
- Expired
Links
Landscapes
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Description
【発明の詳細な説明】
本発明は耐水性の優れた段ボールのコルゲータ−用接着
剤に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adhesive for corrugating corrugated board having excellent water resistance.
近年、段ボールの用途としては青果物、水産物コールド
チェーン関係など耐水性が要求される包装材としての用
途が増加しており、耐水性の良好な段ボールの要望が強
くなってきている。In recent years, there has been an increase in the use of corrugated cardboard as a packaging material that requires water resistance, such as in the cold chain of fruits and vegetables and marine products, and there is a growing demand for corrugated cardboard with good water resistance.
耐水段ボールの製法としては種々検討されており、紙の
耐水性を向上させる方法としてはスチレン樹脂、スチレ
ン樹脂−クマロン樹脂、ポリカーボネート樹脂などの樹
脂をライナー紙、中芯紙に含浸させる方法がとられてお
り、樹脂含浸加工された耐゛水ライナー、耐水中芯紙を
接着させる耐水接着剤の要望が強い。Various methods have been studied to produce water-resistant corrugated board, and methods to improve the water resistance of paper include impregnating liner paper and core paper with resins such as styrene resin, styrene resin-coumaron resin, and polycarbonate resin. There is a strong demand for water-resistant adhesives that can bond resin-impregnated water-resistant liners and water-resistant core paper.
また接着剤自体の耐水性を向上させる方法としては、ス
タインホール方式のデンプン枠中のメイン部に耐水化剤
としてケトン樹脂、尿素樹脂、フェノール樹脂、酢ビー
無水マレイン酸共重合樹脂等の樹脂類を単独で適量添加
する方法がとられているが、充分な耐水性が得られてい
ないのが現状である。In addition, as a method to improve the water resistance of the adhesive itself, resins such as ketone resin, urea resin, phenol resin, acetic acid-beam maleic anhydride copolymer resin, etc. Although a method has been adopted in which a suitable amount of each is added alone, sufficient water resistance has not been obtained at present.
本発明者らは鋭意研究の結果、スタインホール方式のデ
ンプン糊への耐水化剤として、尿素樹脂、尿素−メラミ
ン樹脂、メラミン樹脂又はケトン樹脂（アセトンとホル
ムアルデヒドとの縮合樹脂）などのホルムアルデヒド系
縮合樹脂と、インシアネート化合物とを併用して使用す
ることにより耐水性の良好なコルゲークー用接着剤とな
ることをみいだし本発明を完成した。As a result of intensive research, the present inventors have found that formaldehyde-based condensation agents such as urea resin, urea-melamine resin, melamine resin, or ketone resin (condensation resin of acetone and formaldehyde) can be used as a water-resistant agent for Stein-Hall starch paste. The present invention was completed by discovering that a corrugated adhesive with good water resistance can be obtained by using a resin and an incyanate compound in combination.
本発明で使用する耐水化剤としてのホルムアルデヒド系
縮合樹脂としては尿素樹脂、尿素−メラミン樹脂、メラ
ミン樹脂又はケトン樹脂などの市販されている樹脂の単
独又は混合物で、この中でも尿素樹脂とケトン樹脂が最
適である。The formaldehyde-based condensation resin used as a waterproofing agent in the present invention may be one or a mixture of commercially available resins such as urea resin, urea-melamine resin, melamine resin, or ketone resin, among which urea resin and ketone resin are preferred. Optimal.
またインシアネート化合物としてはインシアネート基（
−ＮＣＯ）を分子中に少なくとも２個以上含む化合物又
は熱的需囲気によりイソシアネート基を遊離する化合物
を意味し、具体的にはへキサメチレンジイソシアネート
（ＨＭＤｌ）、トリレンジイソシアネート（ＴＤ■）、
ジフエンルメタンジイソシアネート（ＭＤＩ）、トリメ
チロールプロパン（ＴＭＰ）−ＴＩ）Ｉアダクト、トリ
フェニールメタントリイソシアネート等があり、これら
の重合物やこれらの末端変性物も含み、使用に際しては
これらの単独又は混合して使用してもよい。In addition, as an incyanate compound, an incyanate group (
-NCO) in its molecule, or a compound that releases isocyanate groups by thermal ambient air, specifically hexamethylene diisocyanate (HMDl), tolylene diisocyanate (TD■),
Diphenylmethane diisocyanate (MDI), trimethylolpropane (TMP)-TI) I adduct, triphenylmethane triisocyanate, etc. also include polymers of these and terminally modified products, and when used, these may be used alone or in combination. May be used in combination.
この中でも低分子量で−ＮＣＯ含有量が多く反応性にと
んでいる芳香族系のＭＤＩ系イソシアネートが最適であ
る。Among these, aromatic MDI isocyanates are most suitable because they have a low molecular weight, a high -NCO content, and are highly reactive.
更に調合糊の安定性を良好にするために、イソシアネー
ト化合物を溶剤で希釈するのが良り、トルエン、キシレ
ン、ベンゼン、ＭＥＫ。Furthermore, in order to improve the stability of the prepared paste, it is preferable to dilute the isocyanate compound with a solvent, such as toluene, xylene, benzene, or MEK.
アセトン、酢酸メチル、酢酸エチル、酢酸ブチル等が使
用できるが、トルエン、キシレン、酢酸エチ／Ｌなど水
と相溶性のない溶剤で、７０〜７５重量饅溶液が適して
いる。Acetone, methyl acetate, ethyl acetate, butyl acetate, etc. can be used, but a 70 to 75 weight solution of a solvent incompatible with water such as toluene, xylene, ethyl acetate/L is suitable.
次に耐水化剤の添加量としてはスタインホール方式によ
るデンプン糊のメイン成分とキャリアー成分を加えた全
量固型デンプン１００重量部に対してホルムアルデヒド
系縮合樹脂が１〜１５重量部とインシアネート化合物１
〜２０重量部添加するのが良く、１重量部以下では耐水
性向上の効果がなく、３０重量部以上では調合糊の貯蔵
安定性が悪くなる。Next, the amount of water resistant agent added is 1 to 15 parts by weight of formaldehyde condensation resin and 1 part by weight of incyanate compound to 100 parts by weight of the total solid starch including the main component and carrier component of the starch paste according to the Stein Hall method.
It is preferable to add up to 20 parts by weight; if it is less than 1 part by weight, there is no effect of improving water resistance, and if it is more than 30 parts by weight, the storage stability of the prepared paste will deteriorate.
次にイソシアネート化合物の添加法としては、接着主剤
ヲなすメイン成分に予め添加しておくか、又はメイン成
分の粘度、流動性及び糊化温度等の調節するキャノア成
分をメイン成分に添加した後の調合軸中に添加してしよ
いが、作業性の点より予めメイン成分に添加しておくの
が適している。Next, the isocyanate compound can be added in advance to the main component, which is the adhesive base agent, or after the canoa component, which adjusts the viscosity, fluidity, gelatinization temperature, etc. of the main component, is added to the main component. Although it may be added to the mixture, it is preferable to add it to the main ingredients in advance from the viewpoint of workability.
更に必要に応って、増粘剤、防腐剤などとしてのホウ酸
なども添加できる。Furthermore, boric acid and the like can be added as a thickener, preservative, etc., if necessary.
本発明の特徴である耐水化剤としてホルムアルデヒド系
縮合樹脂とインシアネート化合物を添加したコルゲータ
−用接着剤は、従来のデンプン糊にホルムアルデヒド系
縮合樹脂を単にブレンドした接着剤硬化物に比較して、
デンプン枠中の水酸基（−ＯＨ）及びホルムアルデヒド
系縮合樹脂中の水酸基がインシアネート化合物中のイソ
シアネート基と３次元的に架橋して強靭で耐水性の優れ
た接着剤硬化物を形成するものと考えられ、樹脂含浸ラ
イナー紙及び樹脂含浸中芯紙との密着性が優れているの
みならず、調合糊の粘度安定性も良好となる。The adhesive for corrugators that contains a formaldehyde condensation resin and an incyanate compound as a water resistant agent, which is a feature of the present invention, has a cured adhesive that is simply a blend of a formaldehyde condensation resin and a conventional starch paste.
It is thought that the hydroxyl groups (-OH) in the starch frame and the hydroxyl groups in the formaldehyde condensation resin three-dimensionally crosslink with the isocyanate groups in the incyanate compound to form a tough and highly water-resistant cured adhesive. Therefore, not only the adhesion to the resin-impregnated liner paper and the resin-impregnated core paper is excellent, but also the viscosity stability of the blended paste is also good.
次に実施例で更に具体的に説明するが、これによって本
発明が限定されるものではない。Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.
実施例１．２．３及び比較例１、２ 、 ：３下記の基
本的なスタインホール方式によるデンプン枠中に第１表
の如き耐水化剤を添加して実施例１，２．３及び比較例
１，２．３によるコルゲータ−用接着剤とした。Example 1.2.3 and Comparative Examples 1, 2, :3 Waterproofing agents as shown in Table 1 were added to the starch frame according to the basic Stein-Hall method below to prepare Examples 1, 2.3 and Comparative Examples. A corrugator adhesive according to Examples 1 and 2.3 was used.
メイン成分
水 ５７０重量部
メイン成分
コンスターチデンプン ２００重量部
硼砂 ５〃
耐水化剤（第１表） １０〜２０ 〃キャリア成分
水 ４００重量部コンスターチ
デンプン ４５ 〃
カセイソーダ ７１１
水 ２０ 〃
但し、コンスターチデンプンは日食スターチＣ３Ｐ６０
０（日本食品加工、製）
第 １ 表 耐水化剤の配合
但し
尿素樹脂：樹脂分７５多水溶液。Main component water 570 parts by weight Main component cornstarch starch 200 parts by weight Borax 5 Water resistant agent (Table 1) 10-20 Carrier component water 400 parts by weight Cornstarch starch 45 Caustic soda 711 Water 20 However, cornstarch starch is eclipsed. Starch C3P60
0 (manufactured by Nihon Shokuhin Kogyo Co., Ltd.) Table 1: Water resistant agent formulation (Urea resin: Resin content: 75% aqueous solution).
ケトン樹脂：樹脂分５０％のアセトンとホルムアルデヒ
ドの縮合樹脂。Ketone resin: A condensation resin of acetone and formaldehyde with a resin content of 50%.
ＭＤＩニジフェニルメタンジイソシアネーオー５多トル
エン溶液。MDI diphenylmethane diisocyanate 5 polytoluene solution.
以上の実施例及び比較例によるコルゲータ−用接着剤を
使用して２８０ ｇ／ｍ’の樹脂含浸耐水処理ライナー
紙と中芯紙を、アイロンにて１８０’Ｃ５秒間加熱貼合
せた段ボール片（大きさ８×５ＣｒｆＬ）の常態接着力
及び２０℃の水中に３．１０．６０分間浸漬後の湿潤状
態における接着力（耐水接着力）をＪＩＳ Ｚ−０４
０２によるピンテスターＢフルートにて測定した結果を
第２表に示す。A corrugated cardboard piece (large size JIS Z-04 standard adhesion strength of 8×5CrfL) and wet state adhesive strength (water resistant adhesive strength) after 3.10.60 minutes immersion in 20°C water.
Table 2 shows the results measured using a pin tester B flute according to 02.
Claims (1)
とイソシアネート化合物とが添加されていることを特徴
とするコルゲータ−用接着剤。 ２ ホルムアルデヒド系縮合樹脂が、尿素樹脂、尿素−
メラミン共縮合樹脂、メラミン樹脂、ケトン樹脂から選
ばれた１以上の樹脂である特許請求の範囲第１項記載の
コルゲータ−用接着剤。 ３ イソシアネート化合物が、ＭＤＩ系インシアネート
である特許請求の範囲第１項または第２項記載のコルゲ
ータ−用接着剤。[Scope of Claims] 1. An adhesive for a corrugator, characterized in that a formaldehyde-based condensation resin and an isocyanate compound are added to an alkaline starch glue. 2 Formaldehyde condensation resin is urea resin, urea-
The corrugator adhesive according to claim 1, which is one or more resins selected from melamine cocondensation resins, melamine resins, and ketone resins. 3. The corrugator adhesive according to claim 1 or 2, wherein the isocyanate compound is an MDI incyanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54057391A JPS5846234B2 (en) | 1979-05-11 | 1979-05-11 | Adhesive for corrugator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54057391A JPS5846234B2 (en) | 1979-05-11 | 1979-05-11 | Adhesive for corrugator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55149357A JPS55149357A (en) | 1980-11-20 |
| JPS5846234B2 true JPS5846234B2 (en) | 1983-10-14 |
Family
ID=13054311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54057391A Expired JPS5846234B2 (en) | 1979-05-11 | 1979-05-11 | Adhesive for corrugator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5846234B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109476909B (en) * | 2016-07-26 | 2021-04-23 | Dic株式会社 | Resin composition and laminate |
-
1979
- 1979-05-11 JP JP54057391A patent/JPS5846234B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55149357A (en) | 1980-11-20 |
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