英语叫 basket filter
http://www.amazon.com/BUNN-BCF100-B-100-Count-Basket-Filter/dp/B00006IUV3/ref=sr_1_1?ie=UTF8&qid=1341860307&sr=8-1&keywords=coffee+filter
德语叫 Filterkoerbchenhttp://www.amazon.de/gp/product/B0014DFDZY/ref=s9_simh_gw_p79_d0_g79_i1?pf_rd_m=A3JWKAKR8XB7XF&pf_rd_s=center-2&pf_rd_r=1DWPHA2PYD1X7A66Q528&pf_rd_t=101&pf_rd_p=463375173&pf_rd_i=301128
将它们压平,就是一张圆形的纸。一次性使用,非常方便。