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步殼印刷金屬等材料的特種印刷及應用

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2021-08-30 | 377 Views | Share:
油膜的作用是防止鐵皮在堆積、據扎或運輸時因摩擦而引起的錶面劃傷。保證馬口鐵錶面狀態對印刷或塗布不會帶來不良影響。

                             步殼印刷金屬等材料的特種印刷及應用


馬口鐵也稱渡錫鋼板,是在薄鋼板基材上鍍錫而成。薄鋼板基材以低碳鋼為原料,其厚度一般為0.1-0.4m


油膜的作用是防止鐵皮在堆積、據扎或運輸時因摩擦而引起的錶面劃傷。保證馬口鐵錶面狀態對印刷或塗布不會帶來不良影響。


按其鍍錫工藝不同可分為熱浸鍍馬口鐵和電鍍馬口鐵兩種類型。熱浸鍍馬口鐵採用液塗工藝鍍錫,其塗層厚度較厚,消耗量較大,


塗層厚度也難以控制,其應用受到限制。電鍍馬口鐵採用電鍍工藝在鋼板基材上均勻地鍍以錫膜而成,也稱冷鍍馬口鐵,


主要有鹼性電鍍法、硫酸鹽電鍍法、滷素電鍍法和硼氟酸電鍍法等幾種類型。地根據薄鋼板正反面鍍錫厚度的不同,


又可將馬口鐵分為等厚鍍錫和差厚鍍錫兩種形式。等厚鍍錫是指薄鋼板正反面的鍍錫量相同,而其面反面的量在薄鋼板錶面先塗布一層棉籽油以形成保護膜,


防止鋼面生銹和擦傷,塗油量一般控制在2mgm2範圍內。此外,為了控製錶面氧化程度,提高抗硫化能力,防止錶面變色和影響印別呈色效果,還應進行鈍化處理。


目前,國內所用的馬口鐵承印材料,對於中、高檔印品不少採用進口材料,按日本工業標準(JSC3303),鋼板的化學成分及錫的附著量。


步殼印刷金屬等材料的特種印刷及應用

步殼印刷金屬等材料的特種印刷及應用


由於鋼板的種類不同,其性能各異。鍍錫過程中對錫的附量記,以供製作灌裝容器或印刷、塗裝時給予區分。一般情況下,


對鍍層面因加熱到熔融溫度而被迴流,則表現出非常光滑的光澤錶面。若不被迴流時,則不會形成光澤錶面馬口鐵的外觀質量可從原板性能,尺寸及錶面性能來判斷。


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