Ohki Co., Ltd.

Yoko Mitani

Naoko Yamaguchi

Ryosuke Hayami

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 &#x3bc;m, the fabric having a basis weight of 8 to 19 g/m; and a second layer of a meltblown nonwoven fabric formed from polyester-based fibers having an average diameter of 16 to 28 &#x3bc;m, the fabric having a basis weight of 2 to 8 g/m, wherein the sum of the lengths of all fibers included in 1 cmof 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.

Sheet material for extraction, extraction filter, and extraction bag

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 &#x3bc;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 &#x3bc;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&#xd7;10to 14.5&#xd7;10gf&#xb7;cm/cm.

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Osaka, Japan

Yoko Mitani