JPH0428838B2 - - Google Patents
Info
- Publication number
- JPH0428838B2 JPH0428838B2 JP5366289A JP5366289A JPH0428838B2 JP H0428838 B2 JPH0428838 B2 JP H0428838B2 JP 5366289 A JP5366289 A JP 5366289A JP 5366289 A JP5366289 A JP 5366289A JP H0428838 B2 JPH0428838 B2 JP H0428838B2
- Authority
- JP
- Japan
- Prior art keywords
- slip
- resin
- composition
- corrugated
- coated
- 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
- 239000000203 mixture Substances 0.000 claims description 41
- 229920005989 resin Polymers 0.000 claims description 36
- 239000011347 resin Substances 0.000 claims description 36
- 239000011111 cardboard Substances 0.000 claims description 27
- 239000002245 particle Substances 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 229920005992 thermoplastic resin Polymers 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 9
- 230000009477 glass transition Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 17
- 239000000123 paper Substances 0.000 description 12
- 239000012748 slip agent Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000010954 inorganic particle Substances 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000002537 cosmetic Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005553 polystyrene-acrylate Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Paper (AREA)
Description
［産業上の利用分野］
本発明は防滑性及び耐ブロツキング性を有する
防滑性組成物及び防滑性段ボールシートに関す
る。
［従来の技術］
パレツトに積まれた箱、或いは袋の荷くずれを
防ぐために、滑り防止剤を箱、或いは袋に塗工す
ることが従来行なわれている。軟質の樹脂或いは
ゴムを塗工し、そのタツク性で滑りを防止する方
法と、無機粒子をバインダーと共に塗工する方法
が知られている。
具体的には、(1)軟質の樹脂、ゴムの溶液又は分
散液を塗布・乾燥する方法、(2)上記に加えて、軟
質の合成樹脂から成る発泡性中空粒子を混合し、
塗布・乾燥する方法、(3)凹凸の大きな無機粒子を
バインダーと共に塗布・乾燥する方法である。(1)
の例としては特開昭48−60090号公報に、アタク
チツクポリプロピレン又はエチレン・酢酸ビニル
共重合体を段ボール箱の塗工する方法が開示され
ている。(2)の例としては、実開昭57−29323号公
報に紙又はシートに発泡性塗料を成層した滑り止
め紙が開示され、更に特開昭60−21419号公報に
はバインダー中に熱可塑性樹脂の中空球体を分散
して塗布・乾燥し、その中空球体の弾性効果によ
り、著しく滑り防止効果を上げる技術が開示され
ている。
従来の方法では、製凾又は製袋後に塗布・乾燥
することが通例であつたが、原紙への印刷工程、
或いは抄紙工程などの容器成形（製凾、製袋の工
程を総称して容器成形と称する）前の段階で塗工
できれば、工程の簡略化とエネルギー資源の節約
ができることになる。
しかしながら、容器成形前の原紙の段階で塗工
すると、(1)，(2)の方法では製凾、製袋の時、或い
は段ボール貼合の時に熱を受けた塗工物が粘着性
となり、ロール或いはベルトなどに付着するトラ
ブルを生じる。また特に(2)の方法においては、軟
質ポリマーの中空粒子が著しく発泡し、印刷の美
粧性を損うという欠点がある。
また、必ずしも後工程で熱がかからない場合で
も、例えば袋用のクラフト紙に粘着性のある樹脂
を塗工したものの巻取は、ブロツキングを起こし
易い。(3)の方法では軟質バインダーを用いれば、
上記と同様の欠点があり、軟質の（比較的軟化点
が高い）樹脂をバインダーとして用い、無機粒子
の凹凸の効果で滑り防止をする場合は、粘着物の
付着の問題はなくなるが、粒子により後工程のロ
ールを傷つけたり、粒子がはがれ落ちたりする問
題がある。バインダーにタツク性がない場合、滑
りを防止するためには凹凸のある粒子を多量に必
要とするので、印刷の美粧性を損なう点も問題と
なる。
従つて、巻取にした時にブロツキングせず、後
工程で熱による粘着物の付着の心配がなく、粒子
がはがれ落ちたり、ロールを傷つけたりすること
がなく、更には印刷の美粧性を損うことのない滑
り防止特性を有する防滑性組成物及び容器用シー
ルの開発が望まれていた。
本発明者等は容器用の中でも特に段ボールケー
ス用シートに着目し、上述の従来の防滑剤（防滑
性組成物）及び防滑シートについての問題点を調
査した結果、これらの防滑シートは冬季、夏季の
温度域で防滑性が大きく変化し、季節による防滑
効果が不安定であることに注目した。
本発明者等は、この原因について検討した結
果、これらの防滑シートに用いられている合成樹
脂が、冬季、夏季の実用温度域での粘弾性を示す
損失弾性率（G″）、貯蔵弾性率（G′）が大きく変
動し、またTg（ガラス転移温度）が前記実用温度
域内又は温度域付近にある合成樹脂、有機フイラ
ー等を含む防滑剤を使用していたことにあること
をつきとめた。
また、防滑剤にTgが余り低い樹脂が含まれて
いるときは、段ボール製造中の高い温度域で防滑
剤の塗膜面の耐摩耗性が低下することも判明し
た。
更に、損失弾性率が低い値のためにクリープを
生じ、段ボールシート或いは段ボールケースを積
み重ねたときに、防滑剤の樹脂が防滑剤を塗工し
ていない他の紙面又は防滑剤面同志がブロツキン
グする問題点もあつた。
本発明者等は従来の防滑剤の問題点は、防滑剤
の粘弾性、すなわち、貯蔵弾性率（G′）、損失弾
性率（G″）、ガラス転移温度（Tg）などから、
前記の防滑性とブロツキング防止の両方を満足す
る点を追求することを考慮してなかつたことに知
見を得て、種々検討の結果、本発明をなすに至つ
た。
［発明が解決しようとする課題］
本発明の目的は、上記の問題点を解消して段ボ
ールシート、段ボールケースの冬季、夏季の実用
温度域で防滑性及び耐ブロツキング性の変動が極
めて少ない防滑性組成物及び前記防滑性組成物を
被覆した段ボールシート又は段ボールケースを提
供することにある。
また、他の目的は段ボールシートの製造工程で
あらかじめ防滑剤組成物で被覆されたシートに熱
がかかり温度が上昇しても粘着等の操業上のトラ
ブルを発生せず、かつ防滑性及び耐ブロツキング
性が良好な防滑性組成物及び防滑性段ボールシー
トを提供することにある。
本発明はTg（ガラス転移温度）が０℃未満の熱
可塑性樹脂を、Tgが＋80℃以上の熱可塑性樹脂
からなる膜材で被覆してなる樹脂粒子を主成分と
して含むことを特徴とする防滑性組成物である。
また、本発明はTgが０℃未満の熱可塑性樹脂
を、Tgが＋80℃以上の熱可塑性樹脂からなる膜
材で被覆してなる樹脂粒子を主成分とし、前記樹
脂粒子に対し無定形又は定形シリカを配合してな
ることを特徴とする防滑性組成物である。
更に、本発明は段ボールシートのライナー表面
に前記防滑性組成物が被覆されていることを特徴
とする防滑性段ボールシートである。
更にまた、本発明は段ボールケースの表面に前
記の防滑性組成物が被覆されていることを特徴と
する段ボールケースである。
本発明の防滑性組成物においては、防滑剤の成
膜後の膜構造に着目し、樹脂粒子を２重構造と
し、内部にTgが０℃未満の熱可塑性樹脂、これ
を被覆して外殻とする膜材としては、Tgが＋80
℃以上の熱可塑性樹脂を用いる。
内部のTgが０℃未満の熱可塑性樹脂としては、
たとえばポリアクリル酸のブチル，２−エチルヘ
キシル、エチル、プロピル、ヘキシル等のエステ
ルがあげられる。膜材のTgが＋80℃以上の熱可
塑性樹脂としては、たとえばポリスチレン、ポリ
メタクリル酸メチル等のエステルがあげられる。
本発明の防滑性組成物の主成分となる樹脂粒子
の２重構造は、内部の樹脂が柔かく、外殻の膜材
が硬いので、ゴムまり状となり、柔軟に変形し、
かつ粒子の形状が変形により点接触から面接触と
なり、接触面積が増加するので、防滑性が生じ
る。
また、外殻の硬い膜材樹脂面は、段ボールシー
トに塗布されて、積重ねられたとき、他の段ボー
ルシートの防滑処理されていない紙表面と接触し
て上から荷重を受けても、膜材樹脂のクリープ性
が低いので、紙の多孔表面に投錨することなく、
ブロツキングを防止できる。
本発明の防滑性組成物は、前記主成分となる樹
脂粒子のほか、充填剤として、無定形又は定形の
シリカを樹脂粒子の５〜50重量％含有させること
が好ましい。
シリカの含有量５重量％未満では、耐ブロツキ
ング性が悪くなり、50重量％を越えると、透明
性、耐摩耗性が悪化するので好ましくない。
本発明の防滑性組成物は、通常段ボール原紙の
ライナーの表面に印刷などにより全面又は部分的
に被覆（プレプリント）してから、コルゲーター
により波形中しんと貼合され、所定の打抜き、罫
線が施されて段ボールシートとされる。段ボール
シートは更に製凾機で段ボールケースに組立てら
れる。
本発明の防滑性組成物は、前記のように段ボー
ル原紙のライナーの表面に、印刷、塗布などによ
り被覆されているが、防滑性組成物のインキ、塗
料を構成する樹脂粒子、充填剤シリカのすべての
成分のTgが実用温度範囲内でないことが好まし
く、被覆された塗膜全体の損失弾性率G″が１×
105〜１×108ダイン／cm2の範囲内にあり、且つ損
失係数（tanδ）が0.5〜2.0の範囲内にあること
が、本発明の防滑性組成物の防滑性及びブロツキ
ング性を良好に保つために望ましい。
なお、本発明の防滑性組成物は前述のような
Tgが０℃未満の比較的柔かい熱可塑性樹脂を内
部にして、Tgが＋80℃以上のか硬い熱可塑性樹
脂からなる膜材で被覆した樹脂粒子を主成分とし
て用いられるほか、前記Tgの異なる樹脂を段ボ
ールシートの表面に２層以上の多層構造に塗膜を
形成してもよい。
たとえば、シート側の内層にTgの低い樹脂を、
外層にTgの高い樹脂を用いて、２層構造にすれ
ば、外側の硬い樹脂で他のシート面とのブロツキ
ングを防ぎ、また、外側の硬い樹脂と内側の比較
的柔かい樹脂で、段ボールシート或いは段ボール
ケースが積重ねられて荷重がかかつたときに、柔
軟に樹脂表面が変形して防滑性を生じさせること
ができる。この場合は防滑性組成物中に配合する
樹脂の比重、塗布液中の親和性或いは塗布工程順
等を前述の多層構造となるように選択、実施すれ
ばよい。
滑り防止剤は通常、段ボールシートに組立てた
とき、箱の天面、底面に相当する段ボールシート
表面の全面又は部分的に塗布するが、本発明にお
いては他の滑り防止剤と異なり、粘着性が少ない
ので、箱を積載、運搬する際の振動による隣接箱
同志に移動ずれ防止のため、天面、底面のほか、
側面にも全面又は部分的に本発明の防滑性組成物
を塗布しておくことも好ましい。
［実施例］
以下本発明の実施例を示す。
SCP波形中しん125g／m2（本州製紙製）の両
面に、ライナーPFK200g／m2（本州製紙製）を
コルゲーターで貼合して、Ｂ段両面段ボールシー
トを製造した。両面のライナーの内、片面の表面
に予め別記表に示す配合の防滑性組成物をインキ
組成とする印刷を施してある。
得られた防滑性段ボールシートの防滑性組成物
塗膜のTg、貯蔵弾性率（G′）、損失弾性率（G″）
及び防滑性、耐ブロツキング性の試験を行つた結
果を表に示す。
比較のため表に示す配合の内外２重構造の樹脂
粒子を作り実施例と同様にして片面のライナーの
表面に印刷して、塗膜の物性、各弾性率、防滑
性、耐ブロツキング性の試験を行つた結果を表に
示す。
試験方法
貯蔵弾性率（G′）、損失弾性率（G″）、ガラス
転移温度（Tg）の測定
ダイナミツクアナライザーRDA−700（レオ
メトリツクスフアーイースト社製）周波数
１Hzで測定
防滑性
JIS P8147による
耐ブロツキング性
実施例で用いたライナーシートの防滑性組成物
被膜面を、別のライナーシートの非防滑処理面に
重ね、荷重２Kg／cm2で24時間圧着後の両シートの
ブロツキング状態を評価した。
ブロツキングしないものを良、ブロツキングす
るものを不良とした。
[Industrial Application Field] The present invention relates to an anti-slip composition having anti-slip properties and anti-blocking properties and an anti-slip corrugated cardboard sheet. [Prior Art] In order to prevent boxes or bags stacked on pallets from shifting, it has been conventional practice to coat boxes or bags with an anti-slip agent. Two methods are known: a method in which a soft resin or rubber is coated to prevent slippage due to its tackiness, and a method in which inorganic particles are coated together with a binder. Specifically, (1) a method of applying and drying a solution or dispersion of a soft resin or rubber, (2) in addition to the above, mixing expandable hollow particles made of a soft synthetic resin,
(3) a method in which inorganic particles with large irregularities are applied and dried together with a binder. (1)
As an example, JP-A-48-60090 discloses a method of coating corrugated cardboard boxes with atactic polypropylene or ethylene/vinyl acetate copolymer. As an example of (2), Japanese Utility Model Application Publication No. 57-29323 discloses anti-slip paper in which foamable paint is layered on paper or sheet, and Japanese Utility Model Application Publication No. 60-21419 discloses a thermoplastic paper in the binder. A technique has been disclosed in which hollow resin spheres are dispersed, applied and dried, and the elasticity of the hollow spheres significantly increases the anti-slip effect. In conventional methods, it was customary to apply and dry after making a bag or making a bag, but the printing process on base paper,
Alternatively, if the coating can be applied at a stage before container forming (the box-making and bag-making processes are collectively referred to as container forming) such as in the papermaking process, the process can be simplified and energy resources can be saved. However, if the coating is applied to the base paper before forming the container, the coated material will become sticky due to the heat it receives during box making, bag making, or corrugated board lamination. This may cause problems such as adhesion to rolls or belts. In particular, the method (2) has the drawback that the hollow particles of the soft polymer foam significantly, impairing the cosmetic appearance of the print. Furthermore, even if heat is not necessarily applied in the post-process, blocking is likely to occur when winding kraft paper for bags coated with adhesive resin, for example. In method (3), if a soft binder is used,
It has the same drawbacks as above, and if a soft resin (with a relatively high softening point) is used as a binder and the unevenness of inorganic particles is used to prevent slipping, the problem of sticky substances adhering will disappear, but the particles will There are problems with damage to rolls in subsequent processes and particles peeling off. If the binder does not have tackiness, a large amount of uneven particles is required to prevent slippage, which also poses a problem in that it impairs the aesthetic appeal of printing. Therefore, when it is rolled up, it does not block, there is no need to worry about sticky substances adhering to it due to heat in the post-process, particles will not peel off or damage the roll, and furthermore, the cosmetic appearance of printing will not be affected. It has been desired to develop an anti-slip composition and a seal for containers that have excellent anti-slip properties. The present inventors focused on sheets for corrugated cases among containers, and as a result of investigating the problems with the conventional anti-slip agents (anti-slip compositions) and anti-slip sheets mentioned above, they found that these anti-slip sheets We focused on the fact that the anti-slip properties change significantly in the temperature range of 20-20 degrees, and that the anti-slip effect is unstable depending on the season. As a result of investigating the cause of this, the present inventors found that the synthetic resins used in these anti-slip sheets have a loss modulus (G'') that indicates viscoelasticity in the practical temperature range in winter and summer, and a storage modulus. (G') fluctuated greatly, and it was found that this was due to the use of an anti-slip agent containing a synthetic resin, an organic filler, etc. whose Tg (glass transition temperature) was within or near the above-mentioned practical temperature range. It was also found that when the anti-slip agent contained a resin with a very low Tg, the wear resistance of the anti-slip agent coating surface decreased in the high temperature range during corrugated board manufacturing.Furthermore, the loss modulus decreased. Due to the low value, creep occurs, and when corrugated cardboard sheets or cardboard cases are stacked, there is a problem that the anti-slip resin blocks other paper surfaces or anti-slip surfaces that are not coated with the anti-slip agent. The present inventors believe that the problems with conventional anti-slip agents are due to their viscoelasticity, that is, storage modulus (G'), loss modulus (G''), glass transition temperature (Tg), etc.
It was discovered that consideration had not been given to the pursuit of satisfying both the above-mentioned anti-slip properties and anti-blocking properties, and as a result of various studies, the present invention was completed. [Problems to be Solved by the Invention] The object of the present invention is to solve the above-mentioned problems and to provide anti-slip properties of corrugated sheets and cardboard cases with extremely small fluctuations in anti-slip properties and anti-blocking properties in the practical temperature ranges of winter and summer. An object of the present invention is to provide a composition and a corrugated cardboard sheet or a corrugated cardboard case coated with the anti-slip composition. Another purpose is to prevent operational troubles such as sticking even when sheets coated with an anti-slip agent composition are heated in the corrugated sheet manufacturing process and the temperature rises, and to provide anti-slip and anti-blocking properties. An object of the present invention is to provide an anti-slip composition and an anti-slip corrugated cardboard sheet with good properties. The present invention provides an anti-slip product characterized by containing as a main component resin particles formed by coating a thermoplastic resin with a Tg (glass transition temperature) of less than 0°C with a film material made of a thermoplastic resin with a Tg of +80°C or more. It is a sexual composition. Further, the present invention has resin particles as a main component formed by coating a thermoplastic resin with a Tg of less than 0°C with a film material made of a thermoplastic resin with a Tg of +80°C or more, and the resin particles have an amorphous or regular shape. This is an anti-slip composition characterized by containing silica. Furthermore, the present invention provides an anti-slip corrugated paperboard sheet, characterized in that the surface of the liner of the corrugated paperboard sheet is coated with the anti-slip composition. Furthermore, the present invention is a cardboard case characterized in that the surface of the cardboard case is coated with the above-mentioned anti-slip composition. In the anti-slip composition of the present invention, we focused on the film structure after the film formation of the anti-slip agent, and the resin particles have a double structure. As a membrane material, Tg is +80
A thermoplastic resin with a temperature of ℃ or higher is used. As a thermoplastic resin with an internal Tg of less than 0℃,
Examples include butyl, 2-ethylhexyl, ethyl, propyl, hexyl and other esters of polyacrylic acid. Examples of thermoplastic resins whose membrane material has a Tg of +80° C. or higher include esters such as polystyrene and polymethyl methacrylate. The double structure of the resin particles, which is the main component of the anti-slip composition of the present invention, is such that the inner resin is soft and the outer shell is hard, so it forms a rubber ball and flexibly deforms.
In addition, the shape of the particles changes from point contact to surface contact, increasing the contact area, resulting in anti-slip properties. In addition, when the hard membrane resin surface of the outer shell is applied to corrugated cardboard sheets and stacked, the membrane material will not resist even if it comes into contact with the non-slip surface of other corrugated cardboard sheets and receives a load from above. The resin has low creep properties, so it does not anchor on the porous surface of the paper.
Blocking can be prevented. In addition to the resin particles serving as the main component, the anti-slip composition of the present invention preferably contains 5 to 50% by weight of amorphous or regular silica as a filler based on the resin particles. If the silica content is less than 5% by weight, blocking resistance will deteriorate, and if it exceeds 50% by weight, transparency and abrasion resistance will deteriorate, which is not preferable. The anti-slip composition of the present invention is usually coated (preprinted) entirely or partially on the surface of a corrugated board liner by printing, etc., and then laminated with a corrugated medium using a corrugator, followed by predetermined punching and ruled lines. It is then made into a cardboard sheet. The corrugated sheets are further assembled into corrugated cases using a box-making machine. The anti-slip composition of the present invention is coated on the surface of the corrugated board liner by printing, coating, etc. as described above, and the ink of the anti-slip composition, the resin particles constituting the paint, and the filler silica It is preferable that the Tg of all components is not within the practical temperature range, and the loss modulus G'' of the entire coated film is 1×
It is within the range of 10 5 to 1×10 8 dynes/cm 2 and the loss coefficient (tan δ) is within the range of 0.5 to 2.0 that the anti-slip property and blocking property of the anti-slip composition of the present invention are good. desirable to keep. In addition, the anti-slip composition of the present invention has the above-mentioned properties.
In addition to resin particles containing a relatively soft thermoplastic resin with a Tg of less than 0°C and coated with a film material made of a hard thermoplastic resin with a Tg of +80°C or more, resin particles with different Tg can be used as the main component. A coating film may be formed in a multilayer structure of two or more layers on the surface of the corrugated paperboard sheet. For example, use a low Tg resin for the inner layer on the seat side.
By using a resin with a high Tg for the outer layer and creating a two-layer structure, the hard resin on the outside prevents blocking with other sheet surfaces, and the hard resin on the outside and the relatively soft resin on the inside can be used to create a two-layer structure, such as corrugated cardboard sheets or When the cardboard cases are stacked and a load is applied, the resin surface flexibly deforms to provide anti-slip properties. In this case, the specific gravity of the resin blended into the anti-slip composition, the affinity in the coating solution, the order of coating steps, etc. may be selected and implemented so as to form the multilayer structure described above. Anti-slip agents are usually applied to the entire or partial surface of the corrugated cardboard sheet, which corresponds to the top and bottom surfaces of the box, when assembled into a corrugated sheet, but in the present invention, unlike other anti-slip agents, it is applied to In addition to the top and bottom surfaces, in order to prevent adjacent boxes from shifting due to vibration when loading and transporting boxes,
It is also preferable to apply the anti-slip composition of the present invention to the entire or partial side surface. [Example] Examples of the present invention will be shown below. Liner PFK 200 g/m 2 (manufactured by Honshu Paper Industries) was laminated on both sides of SCP corrugated medium 125 g/m 2 (manufactured by Honshu Paper Industries) using a corrugator to produce a B-tier double-sided corrugated board sheet. Of the double-sided liners, one surface was previously printed with an ink composition of an anti-slip composition having the composition shown in the attached table. Tg, storage modulus (G′), loss modulus (G″) of the anti-slip composition coating film of the obtained anti-slip corrugated cardboard sheet
The results of anti-slip and anti-blocking tests are shown in the table. For comparison, resin particles with an inner and outer double structure having the composition shown in the table were prepared and printed on the surface of a single-sided liner in the same manner as in the example, and the physical properties of the coating film, each modulus of elasticity, anti-slip property, and anti-blocking property were tested. The results are shown in the table. Test method Measurement of storage modulus (G'), loss modulus (G''), and glass transition temperature (Tg) Measured using Dynamic Analyzer RDA-700 (manufactured by Rheometrics Far East) at a frequency of 1 Hz Anti-slip properties According to JIS P8147 Blocking resistance The anti-slip composition coated surface of the liner sheet used in the example was placed on the non-slip treated surface of another liner sheet, and the blocking state of both sheets was evaluated after 24 hours of pressure bonding under a load of 2 kg/cm 2 .Those that did not block were rated good, and those that did block were rated bad.
【表】
表に示す結果から明らかなように、本発明の樹
脂粒子組成を含む防滑性組成物を段ボールシート
表面に印刷塗布した実施例の防滑性段ボールシー
トは、比較例の本発明の樹脂粒子組成でない２重
構造の樹脂粒子を含む組成物を印刷塗布した段ボ
ールシートに比較して、防湿性、耐ブロツキング
性共にすぐれている。
［発明の効果］
本発明の防滑性組成物及び防滑性段ボールシー
トは、上述のとおり従来冬季、夏季の実用温度条
件で防滑性及び耐ブロツキング性が不安定であつ
た防滑性組成物の粘弾性に着目し、改良すること
のより季節的な環境条件の変化、更に段ボール製
造工程中の加熱によつても防湿性、耐ブロツキン
グ性に影響を受けない防滑性組成物及びこの組成
物を塗布した防滑性段ボールシート並びに段ボー
ルケースを得ることができたものである。
本発明の防滑性組成物は特定の樹脂を用いて、
外殻となる膜材の硬い樹脂と内部の柔かい樹脂と
の２重構造としたので、本防滑性組成物を塗布し
た段ボールシート或いは段ボールケースを積重ね
て荷重がかかつたときに、内部が柔軟の樹脂粒子
が変形し、防滑性を発揮すると同時に外殻の硬い
樹脂が、他の段ボール紙面にブロツキングするの
を防止する作用効果を奏する。
また、本発明は従来の滑り防止剤が段ボールケ
ース組立後に、改めて塗布、乾燥する加工工程を
付け加える無駄を省き、原紙抄造時或いは原紙の
印刷の段階で防滑性組成物を印刷する、いわゆる
プレプリント防滑性段ボールシートが得られると
いう大きなメリツトがある。[Table] As is clear from the results shown in the table, the anti-slip corrugated cardboard sheet of the example in which the anti-slip composition containing the resin particle composition of the present invention was printed and coated on the surface of the corrugated cardboard sheet was Compared to a corrugated board sheet printed and coated with a composition containing double-structured resin particles, it has excellent moisture resistance and anti-blocking properties. [Effects of the Invention] As mentioned above, the anti-slip composition and anti-slip corrugated sheet of the present invention improve the viscoelasticity of the anti-slip composition, which has conventionally had unstable anti-slip properties and anti-blocking properties under practical temperature conditions in winter and summer. Focusing on this, we developed an anti-slip composition whose moisture-proofing and anti-blocking properties are not affected by changes in seasonal environmental conditions or even by heating during the corrugated board manufacturing process, and applied this composition. It was possible to obtain a non-slip corrugated cardboard sheet and a corrugated cardboard case. The anti-slip composition of the present invention uses a specific resin,
Because it has a double structure of a hard resin for the outer shell and a soft resin for the interior, when a load is applied by stacking cardboard sheets or cardboard cases coated with this anti-slip composition, the interior becomes flexible. The resin particles are deformed, exhibiting anti-slip properties, and at the same time have the effect of preventing the hard resin of the outer shell from blocking on other corrugated paper surfaces. In addition, the present invention eliminates the wasteful process of applying and drying the conventional anti-slip agent after the cardboard case is assembled, and prints the anti-slip composition at the stage of base paper manufacturing or printing of the base paper, so-called pre-printing. This has the great advantage of providing a non-slip corrugated sheet.
Claims (1)
樹脂を、Tgが＋80℃以上の熱可塑性樹脂からな
る膜材で被覆してなる樹脂粒子を主成分として含
むことを特徴とする防滑性組成物。 ２ Tgが０℃以下の熱可塑性樹脂を、Tgが＋80
℃以上の熱可塑性樹脂からなる膜材で被覆してな
る樹脂粒子を主成分とし、前記樹脂粒子に対し無
定形又は定形シリカを配合してなることを特徴と
する防滑性組成物。 ３ 段ボールシートのライナー表面に請求項１又
は２記載の防滑性組成物が被覆されていることを
特徴とする防滑性段ボールシート。 ４ 段ボールケースの表面に請求項１又は２記載
の防滑性組成物が被覆されていることを特徴とす
る段ボールケース。[Claims] 1 The main component is a resin particle formed by coating a thermoplastic resin with a Tg (glass transition temperature) of less than 0°C with a film material made of a thermoplastic resin with a Tg of +80°C or more. Characteristic anti-slip composition. 2 Thermoplastic resin with Tg of 0℃ or less, Tg of +80
1. An anti-slip composition characterized in that the main component is resin particles coated with a film material made of a thermoplastic resin having a temperature of 0.degree. 3. An anti-slip corrugated cardboard sheet, characterized in that the surface of the liner of the corrugated cardboard sheet is coated with the anti-slip composition according to claim 1 or 2. 4. A cardboard case, the surface of which is coated with the anti-slip composition according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5366289A JPH02234997A (en) | 1989-03-08 | 1989-03-08 | Slip-preventing composition and slip-preventing corrugated board sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5366289A JPH02234997A (en) | 1989-03-08 | 1989-03-08 | Slip-preventing composition and slip-preventing corrugated board sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02234997A JPH02234997A (en) | 1990-09-18 |
| JPH0428838B2 true JPH0428838B2 (en) | 1992-05-15 |
Family
ID=12949066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5366289A Granted JPH02234997A (en) | 1989-03-08 | 1989-03-08 | Slip-preventing composition and slip-preventing corrugated board sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02234997A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI121087B (en) * | 2002-11-14 | 2010-06-30 | Metso Paper Inc | Coating procedure |
| KR101014423B1 (en) * | 2010-09-14 | 2011-02-15 | 중동건설(주) | Nonslip paving material which can be cured at normal temperature |
| CN110429210B (en) * | 2019-07-19 | 2021-12-31 | 厦门长塑实业有限公司 | Polyamide film for lithium battery flexible package and preparation process thereof |
-
1989
- 1989-03-08 JP JP5366289A patent/JPH02234997A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02234997A (en) | 1990-09-18 |
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