Abstract: A method for manufacturing a friction material containing a friction modifier, a fibrous material and a binder as raw materials is provided. The method includes a step of mixing and agitating the raw materials by low frequency acoustic agitation. A content of the fibrous material in the friction material may be 1 mass % or more and 50 mass % or less. The content of the fibrous material in the friction material may be 3 mass % or more and 40 mass % or less.

Abstract: A friction material composition of the present invention includes a fibrous base, a friction regulator, and a binder and has a copper content of 0.5 mass % or less in terms of copper element amount. The friction material composition contains regenerated cellulosic fibers as the fibrous base. In an embodiment of the friction material composition, the regenerated cellulose fiber has a fiber length of 2 mm to 20 mm.

Abstract: A method for manufacturing a friction material containing a friction modifier, a fibrous material and a binder as raw materials is provided. The method includes a step of mixing and agitating the raw materials by low frequency acoustic agitation. A content of the fibrous material in the friction material may be 1 mass % or more and 50 mass % or less. The content of the fibrous material in the friction material may be 3 mass % or more and 40 mass % or less.

Abstract: A friction material includes a bio-soluble inorganic fiber and a metal sulfide. A content of the bio-soluble inorganic fiber based on the friction material is 7% by volume or more. The friction material includes no copper component and no metal fiber. The friction material may further include zinc.

Abstract: A friction material composition of the present invention includes a fibrous base, a friction regulator, and a binder and has a copper content of 0.5 mass % or less in terms of copper element amount. The friction material composition contains regenerated cellulosic fibers as the fibrous base. In an embodiment of the friction material composition, the regenerated cellulose fiber has a fiber length of 2 mm to 20 mm.

Abstract: A friction material includes a fiber base material, a friction modifying material and a binder. The friction modifying material includes alumina particles including, as a main component, ?-alumina particles. The ?-alumina particles are contained in an amount of 1 mass % or more in the friction material.

Abstract: A friction material includes a bio-soluble inorganic fiber and a metal sulfide. A content of the bio-soluble inorganic fiber based on the friction material is 7% by volume or more. The friction material includes no copper component and no metal fiber. The friction material may further include zinc.

Abstract: A friction material includes a fiber base material, a friction modifying material and a binder. The friction modifying material includes alumina particles including, as a main component, ?-alumina particles. The ?-alumina particles are contained in an amount of 1 mass % or more in the friction material.

Abstract: A charge processing device (100) for use in an information sale system using a network includes: a circuit receiving from a user terminal (500) subscription request data including an information ID specifying information and a viewer ID specifying a user terminal; a circuit receiving from a distribution server (400) an information ID specifying information, an author ID specifying an author of information and a publishing company ID specifying a publishing company of information; a collecting unit responsive to reception of the subscription request data from the user terminal (500) for collecting charges from users based on the received information; a circuit transmitting subscription approval data to the user terminal (500); and a circuit transmitting information of charges to servers (200, 300, 400, 600, 700).