鋁金屬濺鍍於PET薄膜與模內貼合射出成型製程特性之研究

Study on the Molding Characteristics of Al-Sputtered PET Film During In-mold Decoration Process

邱林雄(CHIU LIN-HSIUNG)

指導教授 ： 陳夏宗

中原大學/工學院/機械工程研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600373

摘要

摘 要
『模內貼合射出成型』是多種技術整合的一種製程技術，其製程經由（1）薄膜印刷（2）高壓預成型（3）外型去邊（4）模內貼合射出成型，四大步驟來完成。其多樣化的顏色選擇與環保特性，是現在與未來中塑膠產品的最佳代表。而近年來金屬質感的風氣大量的應用在各種的產品上，『模內貼合射出成型』製程的產品亦不例外，利用PVD-Sputtering 技術來製作出薄膜表面的金屬質感，以取代一般印刷油墨的顏色，使產品呈現出一種類金屬的新風貌。
本研究利用射出速度、料溫和模溫，三種射出製程參數對PET薄膜上的鍍膜金屬進行實驗，討論射出成型參數對鍍膜金屬的沖刷影響。也討論對金屬表面使用兩種的『表面處理方法』，在不影響產品外觀下，是否能有提高金屬與塑料兩種異質材料的接著強度。
在製程參數對鍍膜金屬被射出塑料沖刷現象方面，射出速度的增加，鍍膜金屬容易被沖刷；而模溫和料溫會影響鍍膜金屬與PET薄膜的接合強度，所以模具與射出塑料溫度的提高，亦會使鍍膜金屬容易被沖刷。而化學接著劑和電漿兩種『表面處理方法』，皆能有效的提高金屬與塑料兩種異質材料的接著強度。

關鍵字

電漿表面改質 ； 塑膠濺鍍 ； 鍍膜金屬被沖刷 ； 模內貼合

並列摘要

Abstract
In-mold decoration is one of the advanced injection molding technologies. There are four steps in this processing : (1) ink printing, (2) high pressure forming, (3) die cutting, (4) insert molding. The advantages of these processing are not only to make colorful molded parts, but also are ecological processing. These molded parts belong to the rules of green part design. The metal-like is one of popular colors for electronic kitchen products. The feeling of film with metal made by using PVD-sputtering processing is better than that by screen printing.
This study investigated that (1) the effects of the three different conditions, such as, injection velocity, melt temperature, and mold temperature, on the metal wash-out of the film; (2) the effects of different surface pretreatments on the bonding strength between the metal of the film and the molded plastic part. The metal on the PET film was made by using PVD-sputtering processing.
The metal wash-out of the PET film increased with injection velocity, melt temperature, and mold temperature. The bonding strength between the metal of the film and the molded plastic part was affected by both melt and mold temperatures. Both surface pretreatments, such as primer resin and plasma, increased the bonding strength between the metal of the film and the molded plastic part.

並列關鍵字

PVD-Sputtering ； In-mold Decoration ； Ink Wash-out ； Plasma Treatment.

參考文獻

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