熱充填寶特瓶飲料捲封性能應用實驗設計方法分析之研究

The Study of Analysis of Capping Performance on Hot Filling PET Bottle Drinks By Applying DOE Method

劉信利(Hsin-Li Liu)

指導教授 ： 張國華

中原大學/工學院/工業工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300254

摘要

塑膠材料最早由歐美國家開始應用於食品、飲料之包裝。由於食品、飲料製造產業大幅且快速使用塑膠包裝材料，加上其所具有優於其他材質之特點使得International Society of Beverage Technologists(ISBT)等國際組織制定相關工業標準以利國際化、標準化之推行。寶特瓶、塑膠蓋最先使用於碳酸飲料之包裝，經過將近二十年之發展，近年來寶特瓶熱充填飲料則已逐漸成為市場盛行之商品。對國內飲料製造業而言，由於寶特瓶、塑膠蓋的廣泛使用，其製程生產技術已日益精進。但塑膠蓋之捲封技術不同於以往鋁蓋之捲封。因此在此類包裝材料已成為世界級原料之際，企業界有必要更深入研究相關技術。
所謂捲封性能(1st扭力、2nd扭力、B角、L角、捲封角度、L-B角)代表的是塑膠蓋、寶特瓶熱充填飲料因封蓋後所呈現之密封性能。現行國內飲料製造商仍以開瓶之1st扭力為主要管制項目。因熱充填飲料的密封性關係著產品的安全衛生，而捲封性能之捲封角度則是密封性之評量指標。因此經由1st扭力及捲封角度之評量可提供飲料製造業對其產品密封性更為完整之管控。
本研究主要目的在於探討熱充填飲料寶特瓶、塑膠蓋捲封性能中1st扭力及捲封角度的影響因子。應用實驗設計(DOE)方法之部分因子實驗設計(Fractional Factorial Design)來決定顯著影響1st扭力及捲封角度之因子。部分因子實驗設計能以極少量實驗次數及樣本完成影響因子評估，並由分析結果決定最佳捲封參數設定。獲得此參數後再以實驗完成參數驗證。根據以往使用傳統實驗方法(One Factor at a Time)之經驗，為尋找捲封性能之影響因子及最佳參數需耗費將近1年之時間且需要至少2000個樣本以上。然而本研究只花費7天的時間進行32個試驗(Runs)及使用384個樣本即可快速找到1st扭力、捲封角度顯著因子及最佳參數。此對企業界而言，不僅可縮短量產前之實驗時程及改善量產後產品和製程之品質，更可為企業界節省可觀的實驗成本。

關鍵字

部分因子實驗設計 ； 實驗設計 ； 密封性能 ； 捲封角度 ； 捲封性能

並列摘要

Plastic materials started to be applied to foods and drinks earliest in Europe and America. Since the food and drink manufacturing industries use rapidly huge amounts of the plastic materials for packing and the special advantages than other materials, the international organization of ISBT institute the relate industrial standard for the practice of internationalization and standardization. PET bottle and plastic cap were to be used first in the packing of carbonated drinks and it develops nearly 20 years. In the past few years, hot filling PET drinks become gradually popular commodity in the market. The techniques of manufacturing process have been progress gradually for the drink industries in Taiwan because of the wide utility of PET bottle and plastic cap. However, the technique of capping of plastic cap differs from the aluminum cap. Therefore, at the time of becoming worldwide class materials the enterprise should go deep into the relate technique.
What capping performance (1st torque, 2nd torque, B angle, L angle, capping angle and L-B angle) means the sealing performance after the capping on hot filling plastic cap and PET drinks. Presently, the drink manufacturers in Taiwan only control 1st torque. The sealing performance of hot filling drinks correspond to safety and sanitation of product and also the capping angle of capping performance is a measure index of sealing performance. Therefore, the measurement of 1st torque and capping angle can provide the complete control to products of drink manufacturers.
My paper is to study the effect factors of 1st torque and capping angle of capping performance in the process of capping of hot filling cap and PET drinks and also decide the significant factors of 1st torque and capping angle by applying Fractional Factorial Design of DOE method. The Fractional Factorial Design can provide the least experimental times and samples to complete evaluation of factors and decide the optimal parameters of capping from the analytic result. When getting the optimal parameters, we verify experimental data. It cost nearly one year and more than two thousand of samples to obtain the factors of capping performance and optimal parameters by the traditional experimental method (One Factor at a Time). However, my paper can obtain the significant factors and optimal parameters of 1st torque and capping angle by conducting only the 32 runs of tests for 7 days and 384 samples. For this, the enterprise can not only short the experimental time before production and improve the quality of products and process after production but also save numerous experimental costs.

並列關鍵字

capping performance ； sealing performance ； design of experiment ； capping angle ； fractional factorial design

參考文獻

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