DESIGNABLE GALVANIZED SHEET IRON

• Main Authors: SHIBAO FUMIO, FUTABA KEIJI, MIYATA TAKUYA, ISHIZUKA KIYOKAZU, KUME KURUMI, YOKOMICHI TAKUYA
• Format: Patent
• Language: English; Japanese
• Published: 03.12.2020
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; PERFORMING OPERATIONS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING

To provide a designable galvanized sheet iron capable of visually recognizing a surface of a galvanized layer and preventing a color tone from being changed while having a colored external appearance.SOLUTION: A designable galvanized sheet iron 1 according to one embodiment of this invention has a laminated resin layer 30 comprising a plurality of colored resin layers L1 to LN, wherein: a total sum of products obtained by multiplying each content (area%) of a pigment in the corresponding colored resin layer by thickness (μm) of the colored resin layer is 12.0 area% μm or less; and when the colored resin layer having the greatest product obtained by multiplying the content (area%) of the pigment therein by the thickness (μm) thereof than others is defined as a deepest-colored resin layer, and when the colored resin layer having the second greatest product is defined as a second deepest-colored resin layer, the following formula (1) is satisfied: 1.00<(C1ST×D1ST)/(C2ND×D2ND)≤4.00 (1). In the formula, C1ST is a content (area%) of a pigment in the deepest-colored resin layer and D1ST is thickness (μm) thereof; and C2ND is a content (area%) of a pigment in the second deepest-colored resin layer and D2ND is thickness (μm) thereof.SELECTED DRAWING: Figure 6 【課題】着色した外観でありながら、亜鉛めっき層の表面を視認可能であり、色調の変動を抑制できる、意匠性亜鉛めっき鋼板を提供する。【解決手段】本実施形態の意匠性亜鉛めっき鋼板１の積層樹脂層３０の複数の着色樹脂層Ｌ１〜ＬＮでは、各着色樹脂層中の顔料の含有量（面積％）と着色樹脂層の厚さ（μｍ）との積の総和が１２．０面積％・μｍ以下であり、着色樹脂層中の顔料の含有量（面積％）と着色樹脂層の厚さ（μｍ）との積が最大となる着色樹脂層を最濃色着色樹脂層と定義し、上述の積が２番目に大きい着色樹脂層を第２濃色着色樹脂層と定義したとき、最濃色着色樹脂層の顔料の含有量Ｃ1ST（面積％）及び厚さＤ1ST（μｍ）と、第２濃色着色樹脂層の顔料の含有量Ｃ2ND（面積％）及び厚さＤ2ND（μｍ）とは、式（１）を満たす。１．００＜（Ｃ1ST×Ｄ1ST）／（Ｃ2ND×Ｄ2ND）≦４．００ （１）【選択図】図６