Abstract:
A release film for producing a green sheet of the present invention includes a base material and a release agent layer provided at a side of a first surface of the base material. The release agent layer includes an ultraviolet curable compound (A) having three or more reactive groups selected from the group consisting of a (meth)acryloyl group, an alkenyl group and a maleimide group in one molecule thereof, a polyorganosiloxane (B) and an α-aminoalkylphenone based photopolymerization initiator (C). An arithmetic average roughness Ra1 of an outer surface of the release agent layer may be different than an arithmetic average roughness Ra2 of a second surface of the base material. According to the present invention, it is possible to prevent pinholes and variation in partially thickness from occurring to the green sheet.
Abstract:
A release film for producing a green sheet of the present invention includes a base material having a first surface and a second surface and a release agent layer formed at a side of the first surface of the base material. A maximum projection height Rp2 of the second surface of the base material is in the range of 60 to 500 nm. An area occupation ratio of projections having a height of 60 nm or higher in the second surface is 10% or less. According to the present invention, it is possible to prevent pinholes and variation in partially thickness from occurring to the green sheet.
Abstract:
A release film for producing a green sheet of the present invention includes a base material having a first surface and a second surface, a release agent layer formed by applying a material containing an active energy ray curable compound (a1) and a polyorganosiloxane (b1) onto a side of the first surface of the base material and curing the material, and a back coat layer formed by applying a material containing an active energy ray curable compound (a2) onto a side of the second surface of the base material and curing the material. An arithmetic average roughness Ra2 of an outer surface of the release agent layer is 8 nm or less and a maximum projection height Rp2 of the outer surface is 50 nm or lower. An arithmetic average roughness Ra3 of an outer surface of the back coat layer is in the range of 5 to 40 nm and a maximum projection height Rp3 of the outer surface of the back coat layer is in the range of 60 to 500 nm. According to the present invention, it is possible to prevent pinholes and variation in partial thickness from occurring to the green sheet.
Abstract:
A release film for a ceramic green sheet production process is provided. The release film comprises a base material and a release agent layer provided at one side of the base material. The release agent layer comprises a cured material of a release agent composition. The release agent composition contains an active energy ray curable component and a silicone-based component. A surface of the release agent layer at the opposite side to the base material has an arithmetic average roughness (Ra) of 8 nm or less and a maximum projection height (Rp) of 50 nm or less. According to the release film for a ceramic green sheet production process, it is possible to effectively prevent/suppress the occurrence of defects such as pinholes and thickness irregularity in a ceramic green sheet, and the releasability of a ceramic green sheet is also excellent.
Abstract:
A release film for producing a green sheet of the present invention includes a base material and a release agent layer provided at a side of a first surface of the base material. The release agent layer includes an ultraviolet curable compound (A) having three or more reactive groups selected from the group consisting of a (meth)acryloyl group, an alkenyl group and a maleimide group in one molecule thereof, a polyorganosiloxane (B) and an α-aminoalkylphenone based photopolymerization initiator (C). An average thickness of the release agent layer is in the range of 0.3 to 2 μm. An arithmetic average roughness Ra1 of an outer surface of the release agent layer is 8 nm or less and a maximum projection height Rp1 of the outer surface is 50 nm or lower. An arithmetic average roughness Ra2 of a second surface of the base material is in the range of 5 to 40 nm and a maximum projection height Rp2 of the second surface is in the range of 60 to 500 nm. According to the present invention, it is possible to prevent pinholes and variation in partially thickness from occurring to the green sheet.
Abstract:
A release film comprises a base material and a release agent layer provided at one side of the base material. The release agent layer comprises a cured material of a release agent composition. The release agent composition contains an active energy ray curable component and a silicone-based component. A surface of the release agent layer at the opposite side to the base material has an arithmetic average roughness (Ra) of 8 nm or less and a maximum projection height (Rp) of 50 nm or less. An elastic modulus measured by a nanoindentation test of the release agent layer is 4.0 GPa or more. A surface of the base material at the opposite side to the release agent layer has an arithmetic average roughness (Ra) of 5 to 50 nm and a maximum projection height (Rp) of 30 to 500 nm.