塑膠件電鍍原理及注意事項之 产品外观设计指导资料(Principles of Plating on Pla

发布时间:2022-03-19 08:29:02 作者:admin 576
塑膠件電鍍原理及注意事項之 产品外观设计指导资料(Principles of Plating on Plastic )
 
第一站  素材選擇    ABS塑料案例 (Step 1:Selecting Material  ABS Plastic Case)
 
1.产品外观设计最好採用電鍍級ABS塑膠如圖所示其丁二烯含量15%~16%密著強度最好 Selects the ABS plastics showing on the right which  the butadiene  is  15%-16%.Its adhesion is best. 
2.采用70%~95%PC+ABS材料要請供應商提供防火材料%、PC%、等相關資料  Applier should offer fireproof material,  PC%,etc,and references before selecting 70%-95%PC+ABS.
3.塑膠電鍍原料應完全乾燥(含水率0.1%以下) Materials of plating on plastic should be dried totally.
4.塑膠電鍍原料盡量避免染色Materials of plating on plastic must prevent dyeing.
5.塑膠電鍍原料UL認證  Materials of plating on plastic should be attested by UL.
 
第二站  模具設計           Step2:Mould Design
1.塑膠電鍍模具必須預留電鍍夾具掛架點(以防產品變形及生產便利性)
Remains points for electroplating rack in mould of plating on plastic .
2.模具設計趨向:耐高溫不易頂開產生毛邊、射出點不可太細以防入水斷裂脫   落、預防尖端放電(加框)、注意離模斜度、預留排氣孔、注意頂針粗細影響外觀及進膠口位置產生之結合線等Trend of moulds design: Moulds should of be resistant to high temperature and not easily open to create crude outline, the ejection point should not be too small to prevent entering water and breaking. Prevents discharge of tip. Reminds the ventilator. Pays attention to that thickness of tip will influence the exterior and the combination line created in the ejection hole.
3.塑膠電鍍模具成型盡量避免尖端設計,盡可能改為R角,这是产品外观设计时需要注意的事项
 Adopts round corner instead of tip corner in mould design.   
4.模具孔洞盡量設計導通,預防殘留藥水不易清洗
Designs passage in the hole to clean the remnants.
5.模具需預留電鍍後膜厚及組裝間隙
Remain the thickness of membrane which formed after electroplating.
第三站  成型射出 Formation and Ejection 
1.脫模劑最好能不用,要用務必使用含氟水性脫模劑Avoid using the mould releases,if it is essential to use one,the Fluorine-type may be used springly.
2.射出參數在不頂模、不起毛邊狀況下,盡可能拉高樹脂溶解溫度及模溫溫度,降低射出壓力及射出速度,以減少應力產生The ejection parameter such as plastic Tm and mould tempreture should rise as high as possidble and the  
3.成形表面確認:不可有感結合線、刮痕、頂凸、拉模、縮水、起蒼、包風、及異色點(浮出表面上)等等Affirming the surface:There must be no combination line ,scratch,etc.
4.成型品包裝:用Tray(托盤)+紙箱,以防碰刮傷Packing:adopt tray and paper case to prevent being scratched.
5.尺寸確認:依廠商訂定長寬尺寸、範圍Affirming the size:decides the size and range of lenth and width according to the requirement of the firm.
第四站  防鍍方式       Methods of  Plating-proof
1.與機構R&D、RF、EMI、ESD、電子等人員討論絕緣區位置、熱溶點位置、卡勾防鍍、耳機孔迴朔、EMI歐姆值
Discusses position of insulation area and melting point ,plating-proof of hooks in rack ,EMI ohm.   
2.防鍍方式:噴塗、貼膠、蝕刻、照影 、印刷 (依需求而決定)
Method of Plating-proof :spraying paint, etching, printing ,etc. (decided by requirements)

















 
以上就是外观产品设计时对塑胶件进行电镀处理的技术指导资料。