Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd.

Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Heavy Industries Machinery Systems, Ltd.

Mitsubishi Heavy Industries Printing & Packing Machinery, Ltd.

Kazuhito Ohira

Kazuki Mizushima

Takashi Nitta

Hiroshi Ishibuchi

Toshihide Kato

Katsuhiko Yamada

Mitsuo Yamamoto

Toshinao Okihara

Shunji Kasuga

Tadashi Itoyama

Setsuo Suzuki

A device includes a tank for storing a glue solution; a roll having a surface for transferring the glue solution onto an area of a corrugating medium of a single-faced corrugated fiberboard sheet in the width direction; scraping members for regulating adhesion of the glue solution outside the area on the surface of the roll; a movement mechanism for moving the scraping members in the width direction; and a control device for setting, on the basis of the cutting width dimension with which the double-faced cardboard sheet is to be cut after passing the roll, the area to be a region in which margins in the width direction have been added outside positions of the side edges of the cutting width dimension, and for controlling the movement mechanism to dispose the scraping members at positions corresponding to the positions of the side edges of the glue application region.

Glue application device and glue application method for cardboard sheets and cardboard sheet manufacturing device

A web adhesive application device, adhesive application method, and the cardboard sheet manufacturing device are provided with: an adhesive liquid tank for storing an adhesive liquid; an adhesive application roll is configured for transferring the adhesive liquid to an adhesive application region adjusted according to a paper width of a bottom liner board to be glued together with a single face cardboard sheet; a doctor roller for adjusting the adhesive liquid to a set film thickness; scraping members in pressured contact with the surface of the adhesive application roll on the upstream side of the nip section with the doctor roller; and damming members in contact with the surface of the adhesive application roll on the upstream side of the nip section with the doctor roller in the rotation direction and on the downstream side of the scraping member contact positions in the rotation direction.

Web adhesive application device and adhesive application method as well as cardboard sheet manufacturing device

A device for gluing of a double facer includes a glue bath containing glue; a gluing roll immersed in and coated with the glue; a doctor roll adjusting the glue on the gluing roll to a predetermined thickness, transferred to a single faced corrugated cardboard; a swing roll disposed at an upstream portion of a transferring direction of the corrugated cardboard; and a moving device that moves the swing roll in a direction that the single faced corrugated cardboard is wrapped around the gluing roll. The swing roll is wrapped around the single faced corrugated cardboard, and the number of flute tips of the single faced corrugated cardboard that are concurrently contacting with the gluing roll and applied with the glue is adjusted by moving only the swing roll in such a direction that crosses a sheet face of the single faced corrugated cardboard passing through the nip.

Double facer, and method and device for gluing thereof

A double facer that fabricates a corrugated fiberboard and that includes heat plate units having thin walls aims at improving the heat conductive efficiency to fiberboard sheets in order to enhance responsibility to the setting temperature and concurrently avoiding thermal deformation of the heat plates due to a difference in temperature between the top surface and the bottom surface. The heat plate unit for fabricating a double-faced corrugated fiberboard included in a double facer that fabricates a double-faced corrugated fiberboards by gluing a single-faced corrugated fiberboard in a swath form and a linerboard together, the heat plate, being horizontally disposed and having a top surface on which the single-faced corrugated fiberboard in a swath form and the linerboard overlapping and being glued together travels, includes: a rib, disposed on a bottom surface of a heat plate, extending in a width direction of the heat plate, being coupled to the heat plateto form an integrated body, and being capable of thermal expansion; and temperature controlling means that controls a temperature of the heat plateand a temperature of the ribindependently of each other.

Heat plate unit and double facer for fabricating double-faced corrugated fiberboard

In a roll for a paper-making machine, a torque which is needed for rotating the roll is reduced and the drive power and a running cost are reduced. A hollow perforated roll in the paper-making machine is rotatably mounted on a bearing housing via a bearing. A cylindrical stationary center shaft extends in an axial direction through a center of the roll and has a perforated circumferential surface. At least two fins extending in an axial direction are mounted on an outer circumferential surface of the center shaft within the hollow interior of the roll, their outer edges being spaced from the inner circumferential surface of the perforated roll. Radially extending disc-like fins are also mounted on the outer circumferential surface of the center shaft perpendicular to an axis of the center shaft with their outer circumferential edges being spaced with a slight gap from the inner circumferential surface of the perforated roll. At least two of the axially extending fins are circumferentially located in the vicinity of contact points with web members wound around the perforated roll.

Roll for paper-making machine

Growing community of inventors

Mihara, Japan

Kazuhito Ohira