Sheet manufacturing method
A sheet manufacturing method includes a mixing step of mixing a fiber and a resin powder in air, and a sheet forming step of accumulating and heating a mixture mixed in the mixing step to form a sheet. The resin powder has a volume average particle diameter of equal to or less than 50 μm, and an absolute value of an average charging amount in a range of 5 (μC/g) to 40 (μC/g).
1. A sheet manufacturing method comprising:
a mixing step of mixing a fiber and a resin powder in air; and
a sheet forming step of accumulating and heating a mixture mixed in the mixing step to form a sheet,
wherein the resin powder has a volume average particle diameter of equal to or less than 50 μm, and an absolute value of an average charging amount in a range of 5 (μC/g) to 40 (μC/g).
2. The sheet manufacturing method according to claim 1 ,
wherein the resin powder has the average charging amount which is equal to or less than −5 (μC/g) and equal to or greater than −40 (μC/g).
3. The sheet manufacturing method according to claim 1 ,
wherein the resin powder has the average charging amount which is equal to or less than −15 (μC/g) and equal to or greater than −40 (μC/g).
4. The sheet manufacturing method according to claim 1 ,
wherein the resin powder has the volume average particle diameter of equal to or less than 30 μm.
5. The sheet manufacturing method according to claim 1 ,
wherein the resin powder has the volume average particle diameter of equal to or greater than 5 μm.
6. The sheet manufacturing method according to claim 1 ,
wherein the resin powder has the volume average particle diameter of equal to or greater than 10 μm.
7. The sheet manufacturing method according to claim 1 ,
wherein the resin powder includes resin particles and inorganic fine particles arranged in a surface of the resin particles.
8. The sheet manufacturing method according to claim 7 ,
wherein a blending amount of the inorganic fine particles in the resin powder is in a range of 0.1% by mass to 50% by mass.