Abstract: A sheet processing device is configured to separate a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end as a bonding portion of the two-ply sheet. The sheet processing device includes a first sheet feeder configured to feed the two-ply sheet, a second sheet feeder configured to feed an inner sheet to be inserted between the two sheets of the two-ply sheet in a state in which the non-bonding portion of the two-ply sheet is separated, and circuitry configured to cause the first sheet feeder to feed the two-ply sheet, perform a sheet separating operation on the two-ply sheet to separate the non-bonding portion of the two-ply sheet, and cause the second sheet feeder to start feeding the inner sheet before completion of the sheet separating operation on the two-ply sheet.

Abstract: A sheet separation device separates a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end of the two-ply sheet. The sheet separation device includes a separator that includes a first separator and a second separator. The first separator is inserted into a gap between the two sheets of the two-ply sheet. The second separator is inserted between the two sheets at said another end of the two-ply sheet that is opposite to the one end of the two-ply sheet and moves in a width direction of the two-ply sheet after the first separator is inserted into the gap and relatively moves from the one end to said another end.

Abstract: A curable polyurethane resin composition contains a polyisocyanate component containing an aliphatic diisocyanate and/or a derivative thereof, and a hydroxyl component containing a heterocyclic ring-containing plant-derived polyol that contains a heterocyclic structure and is derived from plants; and a hydroxyl group-containing unsaturated compound containing an ethylenically unsaturated group and a hydroxyl group.

Abstract: An object of the present invention is to provide a dental material, particularly, a dental prosthesis, having excellent properties such as hydrophilicity and antifouling properties. The dental prosthesis according to the present invention includes a monolayer film obtained by curing a composition including: a compound (I) having at least one hydrophilic group selected from anionic hydrophilic groups and cationic hydrophilic groups, and at least one functional group with a polymerizable carbon-carbon double bond; a compound (II) having two or more functional groups with a polymerizable carbon-carbon double bond (wherein the compound (II) has no anionic hydrophilic group nor cationic hydrophilic group); and a surfactant (III) having a hydrophilic moiety including an anionic hydrophilic group, a cationic hydrophilic group or two or more hydroxyl groups, and a hydrophobic moiety composed of an organic residue (wherein the surfactant has no polymerizable carbon-carbon double bond).

Abstract: A layered body including a crystalline polymeric piezoelectric body, which is molecularly oriented, and a surface layer, in which the relationship between the tensile modulus Ec (GPa) and the thickness d (?m) satisfies the following Formula (A): 0.6?Ec/d ??Formula (A).