两种复合软管生产过程的环境影响评价

目的分别研究用于牙膏包装铝塑复合软管和全塑复合软管的4个生产单元对环境的影响,为此类型包装材料对环境影响的评估以及工艺改进提供参考。方法采用生命周期评价方法定性定量地分析其对能耗和环境的影响,通过eFootprint软件,在线完成全生命周期评价,包括建模、计算分析和数据质量评估。结果2种产品对初级能源消耗、气候变化和生态毒性的影响较大,其主要影响均来自复合空白带的生产,以及盖子、管肩和内衬的注塑成型。每个铝塑复合软管和全塑复合软管分别消耗2.53,2.18 MJ的初级能源,排放123,70.5 g影响气候变化的气体,释放0.012,0.005生态毒性物质。结论在所研究的系统边界内,铝塑复合软管对能源的消耗和对环境的影响均比全塑复合软管高。

Environmental Impact Assessment of Two Kinds of Laminate Tube in Production

The work aims to study the environmental impact of four production units of aluminum barrier laminated (ABL) tube and plastic barrier laminate (PBL) tube respectively, to provide references for the environmental impact assessment and process improvement of such packaging materials. The life cycle assessment (LCA) method was used to qualitatively and quantitatively analyze its impact on energy consumption and the environment. Through the eFootprint software, all life cycle assessments were completed online, including modeling, computational analysis and data quality assessment. According to LCA evaluation results, the two products had great impact on primary energy demand, climate change and eco-toxicity. The main impact came from production of composite blank web, injection molding of cap, shoulder and insert. Each ABL tube and PBL tube consumed 2.53, 2.18 MJ of primary energy, emitted 123, 70.5 g of gases that affected climate change, and released 0.012, 0.005 eco-toxic substances respectively. The conclusion is that within the boundary of the system studied, aluminum barrier laminate tube has higher impact on energy consumption and environment than plastic barrier laminated tube.