Patent and Industrial Products Analyses Study on the Recycled Polyester Fibers

Abstract

Polyester fiber is one of the most synthetic fibers worldwide. It is derived from Para-Terephthalic Acid and Ethylene Glycol (Polyethylene Terephthalate, PET for short). PET production capacity is over 60 million tons, which is used for textile and plastic bottles etc. Recycled PET is also an important material for eco-friendly fibers.
This study analyzed the development trend of recycled polyester in terms of application, technology and product by searching Derwent World Patents Index (DWPI) database through different classification methods such as Cooperative Patent Classification, International Patent Classification and DWPI Manual Code. The results showed that DuPont, Eastame Chemical Company, which has mastered recycled PET technology. In addition, a classification method demonstrated the market advantage and business strategy.
The technology and knowledge for recycled PET has been developed for decades in Europe and the United States. In Taiwan, Far East New Century and Lealea are important manufacturer for the recycled polyester resin in PET recycling technology. It is estimated about 90,000 tons of PET bottles recycled every year in Taiwan according to the reports from Taiwan Textile Federation (TTF), which is equivalent to 4.5 billion water bottles. As Taiwan is one of the best recycling countries worldwide and has the ability of patent development, therefore, Taiwan has the potential to become a leadership position in the innovation by using these advantages.

• Polyester fiber
• recycling
• patent search

摘要

聚酯纖維為最廣泛使用的紡織合成纖維，來源為對苯二甲酸 (Para-Terephthalic Acid)及乙二醇(Ethylene Glycol)聚合而成的線狀高分子 (Polyethylene Terephthalate，簡稱PET) ，每年全球PET產量超過6,000 萬噸，紡織為主要用途，其次為寶特瓶等民生必需品，而PET回收亦是再生環保紡織品的重要原料。本研究利用 DI專利資料庫搜索，透過不同分類方法如合作專利分類號、國際專利分類號，進行專利檢索，以及DWPI Manual Code分析再生聚酯技術在應用面、技術面、產品面之發展趨勢。
分析結果觀察PET回收生產技術被DuPont (杜邦) 公司、Eastman (伊士曼) 公司等企業所掌握，而不同分類方法亦可以觀察出專利權人之市場優勢，或潛在布局之經營策略。寶特瓶回收技術發展在歐美各國早已是深入布局發展，而在台灣方面有遠東新世紀、力寶隆等公司專精於PET的回收技術，為再生聚酯的重要原料生產廠商，且根據紡拓會(TTF)估計，我國每年回收約9萬噸寶特瓶，相當於45億個水瓶。作為回收率高且具有研發專利技術能力之國家，台灣更應善加運用優勢積極介入潛在市場以拓展商機，建立並成為該產業之領導廠商。

• 聚酯纖維
• 回收
• 專利檢索
• 工業產品碼

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