Abstract: A sheet manufacturing method includes defibrating a defibration object in the atmosphere, mixing, in the atmosphere, additive agents including resin into a defibrated material that has been defibrated, adjusting moisture of a mixture of the defibrated material and the additive agents, and heating the mixture that has been moisture-adjusted.

Abstract: A sheet manufacturing apparatus includes: a defibrating unit which defibrates a raw material including at least fibers; an addition unit which adds an additive agent to a defibrated material which is defibrated in the defibrating unit; and a sheet forming unit which forms a sheet by bonding the plurality of fibers to each other via the additive agent. According to a history of the raw material, an amount of the additive agent which is fed by the addition unit varies. In addition, there is provided a sheet manufacturing method, including: defibrating the raw material which includes at least fibers; adding the additive agent to the defibrated material; and bonding the plurality of fibers to each other via the additive agent. According to the history of the raw material, a feed amount of the additive agent with respect to the raw material varies.

Abstract: A paper manufacturing apparatus that can manufacture paper with good mechanical strength and/or water resistance in a dry process. A paper manufacturing apparatus according to the invention has a defibrating unit that defibrates feedstock in air; a mixing unit that mixes an additive containing resin with defibrated material that was defibrated; and a heat unit that heats a mixture into which the defibrated material and the additive were mixed.

Abstract: A sheet manufacturing apparatus can process various materials and manufacture a variety of sheets by changing conditions for making the sheets. A sheet manufacturing apparatus according to the invention has a supply unit that supplies feedstock; a defibrating unit that defibrates the feedstock; a classifier that classifies defibrated material that past the defibrating unit; a mixing unit that mixes an additive containing resin with the classified material that past the classifier; a sieve unit that passes the mixture that past the mixing unit through many openings; a deposition unit that deposits precipitate that past many openings in the sieve unit; a forming unit that applies pressure and heat to the web deposited on the deposition unit, forming a sheet; and a control unit that changes a condition of at least one of the classifier, mixing unit, sieve unit, deposition unit, and forming unit.

Abstract: A sheet manufacturing apparatus includes: a defibrating unit which defibrates a raw material including at least fibers; an addition unit which adds an additive agent to a defibrated material which is defibrated in the defibrating unit; and a sheet forming unit which forms a sheet by bonding the plurality of fibers to each other via the additive agent. According to a history of the raw material, an amount of the additive agent which is fed by the addition unit varies. In addition, there is provided a sheet manufacturing method, including: defibrating the raw material which includes at least fibers; adding the additive agent to the defibrated material; and bonding the plurality of fibers to each other via the additive agent. According to the history of the raw material, a feed amount of the additive agent with respect to the raw material varies.

Abstract: A sheet manufacturing apparatus includes a crusher unit, a defibrator unit, a second web forming unit, and a shaping unit. The crusher unit coarsely crushes a raw material that contains fibers into coarsely crushed pieces. The defibrator unit defibrates coarsely crushed pieces into defibrated material. The second web forming unit forms a web by accumulating defibrated material. The shaping unit forms a sheet from the web. The crusher unit is positioned vertically below the shaping unit.

Abstract: A sheet manufacturing apparatus includes: a defibrating unit which defibrates a raw material including at least fibers; an addition unit which adds an additive agent to a defibrated material which is defibrated in the defibrating unit; and a sheet forming unit which forms a sheet by bonding the plurality of fibers to each other via the additive agent. According to a history of the raw material, an amount of the additive agent which is fed by the addition unit varies. In addition, there is provided a sheet manufacturing method, including: defibrating the raw material which includes at least fibers; adding the additive agent to the defibrated material; and bonding the plurality of fibers to each other via the additive agent. According to the history of the raw material, a feed amount of the additive agent with respect to the raw material varies.

Abstract: A sheet manufacturing apparatus includes a web forming unit that forms a web in which at least fiber and resin are deposited in the air; a pressing unit that presses the web; and a heating and pressing unit that heats and presses the web on a further downstream side than the pressing unit in a transport direction of the web, in which a pressing force of the pressing unit is greater than a pressing force of the heating and pressing unit.

Abstract: A sheet manufacturing method includes defibrating a defibration object in the atmosphere, mixing, in the atmosphere, additive agents including resin into a defibrated material that has been defibrated, adjusting moisture of a mixture of the defibrated material and the additive agents, and heating the mixture that has been moisture-adjusted.

Abstract: A sheet manufacturing apparatus includes a transferring unit configured to transfer a web which includes fibers and resin and accumulates on the transferring unit, and a heating unit configured to heat the web. The transferring unit has a first surface onto which the web is transferred, and a second surface onto which the web is transferred and which is positioned on a downstream side of the first surface in the transfer direction of the web, and an angle which is formed by the first surface and the second surface is less than 90 degrees.

Abstract: A sheet manufacturing apparatus includes a web forming unit configured to form a web that includes fibers and a resin, a transferring unit configured to transfer the web that has been formed, a first cutting unit configured to cut the web in a direction intersecting with a transfer direction of the web being transferred, and a heating unit having a first roller configured to heat the web that has been cut.

Abstract: A sheet manufacturing apparatus is provided with a defibrating unit configured to defibrate a defibration object in the atmosphere, a mixing unit configured to mix additive agents including resin into a defibrated material, a moisture-adjusting unit configured to adjust moisture in a mixture of the defibrated material and the additive agents, and a heating unit configured to heat the moisture-adjusted mixture.

Abstract: There is provided a sheet manufacturing apparatus including: a defibrating unit configured to defibrate a material including fibers in the air; a deposition unit configured to deposit at least a part of defibrated materials defibrated by the defibrating unit in the air; and a pressing unit configured to press a deposited material that is deposited by the deposition unit, in which the pressing unit includes a pair of pressing rollers that initially presses the deposited material, and among the pair of the pressing rollers, the pressing roller positioned at an upper portion is positioned on a downstream side of the pressing roller positioned at a lower portion in a horizontal component of a transfer direction of the deposited material.

Abstract: A sheet manufacturing apparatus includes: a defibrating unit which defibrates a raw material including at least fibers; an addition unit which adds an additive agent to a defibrated material which is defibrated in the defibrating unit; and a sheet forming unit which forms a sheet by bonding the plurality of fibers to each other via the additive agent. According to a history of the raw material, an amount of the additive agent which is fed by the addition unit varies. In addition, there is provided a sheet manufacturing method, including: defibrating the raw material which includes at least fibers; adding the additive agent to the defibrated material; and bonding the plurality of fibers to each other via the additive agent. According to the history of the raw material, a feed amount of the additive agent with respect to the raw material varies.

Abstract: A sheet manufacturing apparatus is provided with a defibrating unit configured to defibrate a defibration object in the atmosphere, a mixing unit configured to mix additive agents including resin into a defibrated material, a moisture-adjusting unit configured to adjust moisture in a mixture of the defibrated material and the additive agents, and a heating unit configured to heat the moisture-adjusted mixture.

Abstract: A sheet manufacturing apparatus includes a web forming unit configured to form a web which includes fibers and resin, and a first pressurizing unit and a second pressurizing unit configured to pressurize the web. The first pressurizing unit has a separation layer, is positioned on an upstream side of the second pressurizing unit in a transfer direction of the web, and is configured to heat the web. The second pressurizing unit is positioned on a downstream side of the first pressurizing unit in the transfer direction of the web, does not have a separation layer, and is configured not to heat the web. The pressurizing force from the first pressurizing unit is smaller than the pressurizing force from the second pressurizing unit.

Abstract: A sheet manufacturing apparatus includes a defibrating unit configured to defibrate a defibration object, a measuring unit configured to acquire information relating to the moisture contained in the defibration object, and a controller configured to modify an operating condition of the defibrating unit based on the information.

Abstract: A sheet manufacturing apparatus includes a measuring unit configured to measure thickness and air permeability of a defibration object containing fibers, a defibrating unit configured to dry-defibrate the defibration object, and a classifying unit configured to separate and remove, by airflow classification, foreign substances other than the fibers from the defibrated material defibrated at the defibrating unit.

Abstract: A sheet manufacturing apparatus includes a web forming unit configured to form a web which includes fibers and resin, and a first pressurizing unit and a second pressurizing unit configured to pressurize the web. The first pressurizing unit has a separation layer, is positioned on an upstream side of the second pressurizing unit in a transfer direction of the web, and is configured to heat the web. The second pressurizing unit is positioned on a downstream side of the first pressurizing unit in the transfer direction of the web, does not have a separation layer, and is configured not to heat the web. The pressurizing force from the first pressurizing unit is smaller than the pressurizing force from the second pressurizing unit.

Abstract: A sheet manufacturing apparatus includes a transferring unit configured to transfer a web which includes fibers and resin and accumulates on the transferring unit, and a heating unit configured to heat the web. The transferring unit has a first surface onto which the web is transferred, and a second surface onto which the web is transferred and which is positioned on a downstream side of the first surface in the transfer direction of the web, and an angle which is formed by the first surface and the second surface is less than 90 degrees.