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熱門關鍵詞：噴塗設備配套解決方案塗裝設備厂家噴塑設備化工設備噴塗設備

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塑膠産品噴塗生産工藝流程

返回列表 作者：鵬鲲自动化设备編輯：來源：发布日期： 2018.12.06

1、退火
塑料成型時易形成內應力，塗裝後應力集中處易開裂。可采用退火處理或整面處理，消除應力。退火處理是把ABS塑料成型件加熱到熱變形溫度以下，即60℃，保溫2h。由于采用此種工藝需要大量的設備投資，因此，可采用整面處理的技術，即配置能夠消除塑件內應力的溶液在室溫下對塑件表面進行15～20min的處理即可。

2、除油
塑料件表面常沾有油汙、手汗和脫模劑，它會使塗料附著力變差，塗層産生龜裂、起泡和脫落。噴塗前應進行除油處理。對塑膠件通常用汽油或酒精清洗，然後進行化學除油後應徹底清洗工件表面殘留堿液，並用純水最後清洗幹淨，晾幹或烘幹。

3、除電及除塵
塑料制品是絕緣體，表面電阻一般在1013Ω左右，易産生靜電。帶電後容易吸附空氣中的細小灰塵而附著于表面。因靜電吸附的灰塵用一般吹氣法除去十分困難，采用高壓離子化空氣流同時除電除塵的效果較好。

4、噴塗生産
塑料塗層厚度爲15~20μm，通常要噴塗2~3道才能完成。一道噴塗後晾幹15min，再進行第二次噴塗。需要光亮的表面還必須噴塗透明塗料。塗後的制件對于阻燃性能基本沒有影響。

5、烘幹
噴塗完後可在室溫下自幹，也可在60℃條件下烘烤30min。

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