1965年,我国研制了武安301型复式防尘口罩。20多年来,各种防尘口罩的研究、生产和使用均得到了较大的发展。然而,在品种、质量方面,我国的防尘口罩与发达国家的相比尚有较大的差距,尤其是简易型防尘口罩,性能较差,式样陈旧,成本偏高。为此,我们研制了简易、价格低廉、性能达到国标二级以上的 YA—1型无纺布成型防尘口罩。 In 1965, our country developed the Wu’an 301 double dust masks. More than 20 years, a variety of dust masks research, production and use have been greatly developed. However, in terms of variety and quality, there is a big gap between our country’s dust mask and developed countries, especially the simple dust mask, which has poor performance, old style and high cost. To this end, we have developed a simple, low-cost, performance reached two or more of the national standard YA-1 non-woven fabric dust masks.