# US 10,246,824 B2 · Sheet manufacturing apparatus

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- Number: US 10,246,824 B2
- Document ID: US10246824B2
- Status: Granted
- Kind: B2
- Application number: 15/101,263
- Filed: 2014-08-28
- Published: 2016-10-20
- Granted: 2019-04-02
- Earliest claimed: 2013-12-25
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Kazuma Miyazawa; Shigeo Fujita
- Web page: https://patentgrep.com/patent/US10246824B2

## CPC

- D21B 1/06: by dry methods
- D04H 1/26: Wood pulp
- D04H 1/732: by fluid current, e.g. air-lay
- D21F 9/00: Complete machines for making continuous webs of paper
- B27N 3/12: from fibres
- D04H 1/72: the fibres being randomly arranged
- D04H 1/736: characterised by the apparatus for arranging fibres (D04H1/728, D04H1/732 take precedence)
- D21B 1/08: the raw material being waste paper (chemical part D21C5/02); the raw material being rags
- D21B: FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B)
- D21F: PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- B27N: MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL (containing cementitious material B28B; shaping of substances in a plastic state B29C; fibreboards made from fibrous suspensions D21J; drying F26B17/00)

## Abstract

A drum unit includes a screen with numerous apertures through which airborne material including at least fiber passes, and a cylinder section without apertures, disposed to a rotating cylinder; a housing unit encloses the screen part of the drum unit inside and contacts the cylinder section; and a forming unit forms sheets using material that passes through the apertures.

## Claims

### Claim 1

A sheet manufacturing apparatus comprising:
a drum unit including a screen with numerous apertures through which airborne material including at least fiber passes, and a cylinder section without apertures, disposed to a rotating cylinder, the screen having an outer peripheral surface, the cylinder section having an outer peripheral surface, a first radial dimension from an axis of rotation of the drum unit to the outer peripheral surface of the cylinder section being equal to a second radial dimension from the axis of rotation of the drum unit to the outer peripheral surface of the screen;
a housing unit that has at least a pair of wall portions that oppose each other in a direction along the axis of rotation of the drum unit and that enclose the screen of the drum unit inside, at least the pair of the wall portions contacting the outer peripheral surface of the cylinder section;
a stationary flange unit that is disposed inside the cylinder section does not rotate, and overlaps with the cylinder section in a direction perpendicular to the axis of rotation of the drum unit; and
a fuser unit that applies heat and pressure to material that has passed through the apertures to form a sheet.

### Claim 2 (depends on 1)

The sheet manufacturing apparatus described in claim 1, wherein:
the drum unit has a first portion of the cylinder section, the screen, and a second portion. of the cylinder section disposed in the direction along the axis of rotation of the drum unit.

### Claim 3 (depends on 1)

The sheet manufacturing apparatus described in claim 1, wherein:
the housing unit has a first pile seal, and at least the pair of the wall portions contacts the outer peripheral surface of the cylinder section through the first pile seal.

### Claim 4 (depends on 1)

The sheet manufacturing apparatus described in claim 1, wherein:
the cylinder section and the stationary flange unit are in contact through a second pile seal.