Abstract: A dip-type extraction bag having a bag main body in a planar shape, being formed of a water-permeable filter sheet and filled with an extraction material, wherein the extraction efficiency is improved by providing the body with a specific gripping portion formed from a thin plate-like material and regulating the characteristics of the sheet. The extraction bag includes a bag main body, a thin plate-like member provided on an outer surface thereof, and an extraction material sealed in the bag main body, which is subjected to extraction. The bag main body is a flat bag that has two facing surfaces. The thin plate-like member has a gripping portion that protrudes or is able to protrude from an upper side or the outer surface of the bag main body. The bending resistance (41.5° cantilever method in JIS L 1913:2010 (ISO method)) of the water-permeable filter sheet is 0.09 to 6.0 mN·cm.

Abstract: 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 ?m 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 ?m 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.

Abstract: 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 ?m 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 ?m 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.