Number：

04097055

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Name：

蔡其宏

Titles：

Lecturer

Author：

蔡其宏

Paper name：

旋轉模塑之工業應用與熱效率增進之建議

Name of activity：

2008模具技術與論文發表會論文集

Keywords：旋轉模塑、聚乙烯、桶槽、模具。(rotational molding, polyethylene, storage tank , die)

Abstract：旋轉模塑(rotational molding)為塑膠加工法之一，使模具同時繞著兩個互相垂直之主軸及副軸作三度空間旋轉運動，當裝入適當的塑膠材料後，模具邊旋轉邊加熱以使材料熔化於模具內部，因離心力的作用，均布貼附於模具內壁堆積成型。接著使其逐漸冷卻，俟完全凝固，即停止旋轉。因塑膠之膨脹係數大於金屬模具之膨脹係數，成形之成品冷卻後尺寸縮小可自然脫離模具而易於取出，完成一次工作循環。主要用於製造中空的熱塑產品，如塑膠玩具、洋娃娃、噴霧球、壓捏玩具等，工業用統槽經常儲存酸、鹼及水等化學溶液，大鋒塑膠公司則以粉末聚乙烯(Polyethyline)為原料，經旋轉模加熱融化成型的技術成型法，製成各種形狀；尺寸、顏色(內外雙色)得塑膠製品。產品一體成型為其特色，並可依需求製造發泡三重層來加強桶體強度，產品質輕性堅韌、耐衝擊性強、抗藥性佳之桶形容器，其尺寸有高達7公尺、直徑3公尺容積為50頓之大桶，提供電子、化工及其他工業應用。提高旋轉模塑的熱效率作為降低成本，以罩子作保溫與熱的反射測試其溫度變化過程。

The rotational molding is one of the plastic processing methods; Let the die rotate with respect to two orthogonal axes, and after filled with appropriate plastic material, the die will be attached to even plastic layer because of acceleration. The plastic model can be taken off easily for its greater coefficient of expansion than that of metal. This technique is widely applied to the hallow products such as toys, dolls, and bubbles. Industrial plastic storage tanks are stored for acid, base, and manychemical solutions.The DF plastics co makes various polyethylene-ingredient products famous for built-integrated tech and foam layer to strengthen the endurance.

We improve the heating efficiency during the rotational modeling process to reduce the cost.

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