公开(公告)号：US10882688B2

公开(公告)日：2021-01-05

申请号：US16605746

申请日：2017-05-20

申请人： OHKI CO., LTD.

发明人： Naoko Yamaguchi ,  Yoko Mitani

IPC分类号： B65D85/808 ,  B32B5/02 ,  B32B5/26 ,  D04H3/011 ,  D04H3/016 ,  A47J31/06 ,  A47J31/18 ,  B01D11/02 ,  B32B7/14 ,  B65D85/812

摘要： A sheet material for extraction with excellent transparency and extraction properties, is less likely to cause powder leakage, and has high modulus and excellent machine adaptability; an extraction filter; and an extraction bag. The sheet material having a first layer of a spunbonded nonwoven fabric formed from polyester-based fibers having an average diameter of 18 to 28 μm, the fabric having a basis weight of 8 to 19 g/m2; and a second layer of a meltblown nonwoven fabric formed from polyester-based fibers having an average diameter of 16 to 28 μm, the fabric having a basis weight of 2 to 8 g/m2, wherein the sum of the lengths of all fibers included in 1 cm2 of the sheet material for extraction is 3.3 to 4.8 m, and the 3% modulus is 5.5 N or higher; and an extraction filter and an extraction bag formed by this sheet material for extraction.

公开(公告)号：US10548427B2

公开(公告)日：2020-02-04

申请号：US15553545

申请日：2016-03-09

申请人： OHKI CO., LTD.

发明人： Naoko Yamaguchi ,  Yoko Mitani ,  Ryosuke Hayami

IPC分类号： A47J31/06 ,  B32B5/26 ,  D04H3/14 ,  D04H3/16 ,  B65D85/808 ,  B32B7/12 ,  B32B5/02 ,  B32B7/04 ,  B01D11/02 ,  D04H3/011 ,  D04H1/55 ,  D04H1/435 ,  B65D77/00

摘要： An extraction sheet having high machinability in the manufacture of an extraction filter for beverages and an extraction filter using the same and having high handling property is provided. The extraction sheet includes a layer including a meltblown nonwoven fabric that is formed from fibers of a polylactic acid-based resin having a crystallinity of 9.0% or lower and a fiber diameter of 15.0 μm or smaller and that has a basis weight of 2.0 to 30.0 g/m2, and a layer including a spunbonded nonwoven fabric that is formed from fibers of a polylactic acid-based resin having a crystallinity of 30.0 to 60.0% and a fiber diameter of 35.0 μm or smaller and that has a basis weight of 5.0 to 30.0 g/m2. The extraction sheet has a bending hysteresis of 5.0×10−3 to 14.5×10−3 gf·cm/cm.