全球暖化問題日益嚴峻,劇烈的氣候變遷持續影響著環境的生態和人類的生活。暖化之議題日益受到政府及消費者的重視,使得企業開始關心當製造過程中對環境所造成之影響。為了有效控制溫室氣體排放,減緩全球氣候的變遷,京都議定書規範各國在溫室氣體減量的責任,所管制的六項氣體中又以二氧化碳的排放量最多。目前,大多數之國家對於企業製造產品所產生之碳排放量並未加以課稅;然而一旦實施,則會算入成本之考量中,使得整體製造成本受到影響。 本研究以手機保護殼製造過程為例,建構最佳製造流程之模式。為滿足目標顧客與環境需求下,本研究探討不同原物料與其製造時的加工方式及各加工站使用之機台類型選擇。利用混整數規劃之數學模式,對於手機保護殼製造時之成本、碳排放量與不同碳稅之情況,進行三種情境探討。相信本研究可對於企業在未來實施綠色設計及綠色製造方案選擇時之參考。
Recently global warming related issues have alerted lot of governments and consumers. The main issue is the impact of climate change around the world, which is getting worst and causing dangerous problems for human beings and other living creatures. These issues also cause concerns for enterprises forcing them to study the environmental effects of their manufacturing processes. The objective is to find ways to control their greenhouse gas emissions and to help ease global warming. Kyoto Protocol has been proposed to address these concerns. It clearly specifies the responsibilities of its members to reduce the emission of six greenhouse gases. Among them, carbon emission contributes the most. Now, carbon emissions are not charged and regulated, doing so will increase the production costs. This study develops an optimal manufacturing process model for the processes of mobile phone protective shells. In order to satisfy the target customer demands and environment requirements, we investigate various raw materials, different manufacturing processes and possible selected machine types for various manufacturing processing stations. This study develops a mathematical model of mixed integer programming (MIP) to explore three situations: (1) manufacturing cost, (2) carbon emissions, and (3) cost of carbon taxes converted from carbon emissions. We believe that this study could provide a reference to companies for the implementation of green design and green manufacturing.