Patent ID: 11912011
Assignee: DENKA COMPANY LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC B  H  C | IPC B

Claim 4:
5. A method for producing a composite sheet according to claim 1, the method comprising cutting a resin-impregnated body comprising a nitride sintered body having a porous structure and a semi-cured product of a thermosetting resin composition impregnated into the nitride sintered body by use of a wire saw under conditions including a wire reciprocating linear speed of 155 to 1000 mm/min and a table moving speed of 4 mm/min or less, to obtain the composite sheet,
wherein line roughness Rz, specified by JIS B 0601: 2013, on at least one principal surface of the composite sheet is 10 μm or less.