公开(公告)号：US5496573A

公开(公告)日：1996-03-05

申请号：US395174

申请日：1995-02-27

申请人： Hiroshi Tsuji ,  Hiromasa Saisaka ,  Hideo Murakami ,  Kaichi Suzuki ,  Masaaki Fukuchi

发明人： Hiroshi Tsuji ,  Hiromasa Saisaka ,  Hideo Murakami ,  Kaichi Suzuki ,  Masaaki Fukuchi

IPC分类号： A47J31/06 ,  A47J31/08 ,  B01D39/14 ,  B01D39/16 ,  B65D85/00

CPC分类号： A47J31/08 ,  B01D39/163

摘要： A coffee filter material and bag suitable for providing a high-quality coffee extract, having a nonwoven fabric filter layer which is composed of thermoplastic organic synthetic fibers, satisfies the relationships (1) to (4):3.ltoreq.x.ltoreq.30 (1)y.gtoreq.0.2x (2)1.ltoreq.r.sub.30 (3)andr.sub.70 .ltoreq.50 (4)wherein x is a basis weight (g/m.sup.2) of the woven fabric, y is a cumulative volume value (cm.sup.3 /g) of fine pores in the nonwoven fabric, r.sub.30 is a maximum radius (.mu.m) of the fine pores observed when the volumes of the fine pores are cumulated from the small pore radius side and the cumulative volume value becomes equal to 0.3y, and r.sub.70 is a maximum radium (.mu.m) of the fine pores observed when the volumes of the fine pores are cumulated from the small pore radius side and the cumulative volume value becomes equal to 0.7y, and is capable of absorbing in the wet state thereof at least 0.5 g/g of an oil and fat component from the coffee extract.

摘要翻译： 适合于提供具有由热塑性有机合成纤维构成的无纺布过滤层的高品质咖啡提取物的咖啡过滤材料和袋子满足关系式（1）至（4）：3 / = 0.2x（2）1