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「NO.1」What point is different between "Impregnated type" and "Coated type" of the VCI treated paper?

カテゴリ:【防錆紙の使い方

VCI treated paper is a composed material for packing, with ' paper ' and ' volatile corrosion inhibitor '. The paper is generally used for brown color envelope. Because it is the paper as it looks, it can be cut easily with a cutter knife and scissors.

 Volatile Corrosion Inhibitor is sometimes referred to as the "rust inhibitor" simply. It is generally made up with several chemicals, and the type of chemicals that are gradually vaporized (gasification) are used. However, when it is merely called ' rust inhibitor ', it may mean the rust inhibitor which does not vaporize at all.

 

-Impregnated type (the type containing the VCI in the paper)

Our products are named ["adpack®-G"] ["adpack®-S"] ["adpack®-C"] ["adpack®-ZV"].

The volatile corrosion inhibitor solution is soaked in the kraft paper, and then the solvent only is removed to make the state that contains the VCI in the paper.

グラフィックス1.png

-Coated type (The VCI and glue (paste) is coated on the paper surface)

This is the "adpack® White" in our products line.

The VCI and glue with water is coated on the paper, and then only water is removed, as a result, the two-layer structure is made of "paper" and "VCI + glue".

グラフィックス2.png

Let us briefly explain the VCI treated paper, using typical DICHAN [Dicyclohexyl ammonium nitrite, CAS No. 3129-91-7] as a volatile corrosion inhibitor.

 DICHAN has been used for decades, but it is hard to dissolve it into water. It is not easy to apply DICHAN as the "impregnated type" abovementioned. Because it dissolves only about 0.1 g * to one liter of water. Therefore, the DICHAN can be uniformly applied to the paper by dispersing the DICHAN in water, in conjunction with the glue. Examples of "dispersing agents are close to "paint" and "toothpaste (tube type)" etc.

 The "adpack® White" VCI treated paper in our products line is using this DICHAN.

 

* Workplace Safety site: Chemical substance: GHS Model SDS Information

http://anzeninfo.mhlw.go.jp/anzen_pg/GHS_MSD_FND.aspx 

Principle of corrosion (rusting-the oxidation-reduction reaction) will be explained in No.3.

■著者情報

  • 名前
    清水良直(しみずよしなお)
  • 略歴
    長野県出身1947年生まれ
    大学で界面化学を履修し,ごく微量の化学物質によるさまざまな現象に興味をおぼえた。
    社会人になって6年目に「防錆紙(ぼうせいし)」と出会い,金属のサビをごく微量の化学物質で防止する技術に感動。 以来,社内での出世を棒に振ってまで,研究や新製品の開発に従事しながら,業界団体での活動にも参加。
    会社を辞めた後も業界団体の教育活動「防錆技術学校」の講師として,防錆管理士を目指す若者の教育・指導を継続。
    2002年、アドコートの技術顧問に就任。
  • 主な雑誌投稿や著作
    防錆管理……防錆紙に関する解説記事,研究発表など
    コンバーテック……「防錆包装再考」シリーズ
    防錆技術学校……「気化性防錆材」などの教科書
  • 日本工業規格の制定・改正
    JIS Z 0303,JIS Z 1535,JIS Z 1519,JIS Z 0320,JIS Z 0321
  • 防錆についての想い
    金属製品の一時防錆にかかわってきた経験や技術をつうじて社会に貢献するとともに, 技術を伝承することによって後輩たちの育成に努めたい。
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