Half Masks(半面罩)到底是什麼？
Half Masks 半面罩 - Background Face masks, also referred to as half masks, are essential to protect healthcare professionals working in close contact with patients with COVID-19-related symptoms. [1] Objective Face masks also referred to as half masks are essential to protect healthcare professionals, working in close contact with patients having Covid 19 related symptoms. [2]背景 口罩，也稱為半面罩，對於保護與 COVID-19 相關症狀患者密切接觸的醫療保健專業人員至關重要。 [1] 目標 面罩也稱為半面罩，對於保護與出現 Covid 19 相關症狀的患者密切接觸的醫療保健專業人員至關重要。 [2]
Filtering Half Masks 過濾半面罩
BACKGROUND Thanks to a simplified special approval process that was valid until October 1st, 2020, a large number of particle-filtering half masks have come onto the German market. [1] Through standard comparative research and analysis, together with sample test, it will help to clarify the basic concepts in the filtration efficiency performance requirements and test methods of filtering half masks to protect against particles, promote all sectors of China to comprehensively understanding the performance and test method requirements of the main mask standards at home and abroad, and help the enterprises, testing agencies and governments to better control and supervise product quality. [2] Investigations into volatile organic compound (VOC) emissions from polymer fleeces used in particle filtering half masks were conducted and evaluated against the German hygienic guide value for total volatile organic compounds and the “Lowest Concentration of Interest” for construction products. [3]背景 由於簡化的特殊審批程序有效期至 2020 年 10 月 1 日，大量顆粒過濾半面罩已進入德國市場。 [1] 通過標準對比研究分析，結合樣品測試，有助於明確過濾半面罩防顆粒物過濾效率性能要求和測試方法中的基本概念，促進全國各界全面了解性能和測試國內外主要口罩標準的方法要求，幫助企業、檢測機構和政府更好地控制和監督產品質量。 [2] 對顆粒過濾半面罩中使用的聚合物絨的揮發性有機化合物 (VOC) 排放進行了調查，並根據德國總揮發性有機化合物的衛生指導值和建築產品的“最低濃度”進行了評估。 [3]