研磨布及び研磨布の製造方法 - Fujibo Holdings Co., Ltd.

Title:

研磨布及び研磨布の製造方法

Document Type and Number:

Japanese Patent JP4555559

Kind Code:

B2

Abstract:

A polishing sheet which can improve waviness at a face of a material to be polished and which has a long life is provided. The polishing pad 1 has a polyurethane sheet 2 made of polyurethane resin. The polyurethane sheet 2 has a polishing layer which is disposed inside a surface layer and which is allowed to wear away by polishing and whose thickness is larger than a thickness of the surface layer. The polishing layer has an approximately uniform foam structure in a direction of the thickness of the polishing sheet 2 by being formed foams whose space volume is larger than that of foams formed at the surface layer and which are communicated so as to form a network by continuous holes.

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Inventors:

Takahiro Kume
Tomohiro Iwao

Application Number:

JP2003393700A

Publication Date:

October 06, 2010

Filing Date:

November 25, 2003

Export Citation:

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