某塑料包装厂印刷车间 ,进行塑料外包装印刷 ,在 2 5 0ｍ2的车间内拥有七色、八色两条印刷生产线 ,该厂正式投产后虽有通风设施 ,但效果并不明显 ,挥发在车间内的有机溶剂气味常使工人感觉不适 ,经测定甲苯浓度普遍超过国家标准。为此 ,厂家在车间通风设施上进行改进 ,我们对改 A plastic packaging plant printing plant for plastic packaging printing, in a workshop of 250m2 with seven-color, eight-color two printing production line, although the plant was officially put into operation although the ventilation facilities, but the effect is not obvious, volatile in the workshop The smell of organic solvents often make workers feel unwell, the measured toluene concentration generally exceeded the national standard. To this end, manufacturers in the workshop ventilation facilities to improve, we change