Abstract: In a device and a method for detecting a defect in a corrugated cardboard sheet, a device for eliminating a defect in a corrugated cardboard sheet, and a device for manufacturing a corrugated cardboard sheet, the device for detecting a defect in a corrugated cardboard sheet which detects a defect in a wavy core affixed to a liner is provided with: a lighting device that lights the core; an imaging device that captures an image of a lit part in the core; an image processing device that defines a change degree of a light amount value along a conveyance direction of the corrugated cardboard sheet on the basis of the image captured by the imaging device; and a first determination device that compares the change degree of the light amount value with a previously-set first determination value to determine quality.

Abstract: The present invention is provided with: one slitter device which forms cutting lines on a corrugated board web in a conveying direction and produces a plurality of slitted webs; a plurality of cutoff devices which cut the slitted webs in the width direction; a director device which separates the plurality of slitted webs cut by the slitter device and distributes same to the plurality of cutoff devices; and a separation cutting device which is disposed on the upstream side of the director device, and forms separation cutting lines, which are for separating the plurality of slitted webs with the director device, between the slitted webs of a new order and an old order, wherein the cutting operation is continued after the separation cutting device is stopped at the position of a separation cutting line of the new order.

Abstract: A corrugated board sheet defect detecting device detects a defect in a single-faced cardboard sheet guided by a guide member with corrugated core paper facing outwards. The device includes a radiating device, an image capturing device, an image processing device, and an assessing device. The radiating device is configured to radiate light toward the core paper at a radiation angle relative to the single-faced cardboard sheet. The image capturing device is configured to capture an image of a portion of the core paper irradiated with the light. The image processing device is configured to a light portion and a dark portion in a direction in which the single-faced cardboard sheet is transported based on the captured image. The assessing device is configured to assess a quality by comparing a length of the light portion and a length of the dark portion.

Abstract: An objective of the present invention is to enable the use of identification information, which is usable in a traceability system, in the management of a machine for manufacturing a package material.

Abstract: A cardboard sheet defect detection device is for detecting a defect of a single-faced cardboard sheet guided by a guide member outside a corrugated core. The cardboard sheet defect detection device includes an irradiation device that irradiates the core with light at an irradiation angle inclined as much as a preset predetermined angle with respect to the single-faced cardboard sheet; an imaging device that images an irradiated portion of the light in the core; an image processing device that defines a bright section or a dark section along a transport direction of the single-faced cardboard sheet, based on a captured image captured by the imaging device; and a determination device that determines a quality by comparing a length of the bright section or a length of the dark section which is defined by the image processing device with a preset determination value.

Abstract: The present invention is provided with: one slitter device which forms cutting lines on a corrugated board web in a conveying direction and produces a plurality of slitted webs; a plurality of cutoff devices which cut the slitted webs in the width direction; a director device which separates the plurality of slitted webs cut by the slitter device and distributes same to the plurality of cutoff devices; and a separation cutting device which is disposed on the upstream side of the director device, and forms separation cutting lines, which are for separating the plurality of slitted webs with the director device, between the slitted webs of a new order and an old order, wherein the cutting operation is continued after the separation cutting device is stopped at the position of a separation cutting line of the new order.

Abstract: A defect detection device that detects the position of defective parts in a core paper. The device includes a slitter/scorer that cuts a continuous double-sided cardboard sheet along a transport direction. The device includes a cutoff that cuts off a plurality of continuous double-sided cardboard sheets along a width direction to a prescribed length, the continuous double-sided cardboard sheets having been cut to a prescribed width. The device includes a web director that distributes the plurality of continuous double-sided cardboard sheets to respective conveyance tables. The device includes a defective-product-eliminating device that eliminates plate-shaped double-sided cardboard sheets from a conveyance line.

Abstract: A corrugated board sheet defect detecting device detects a defect in a single-faced cardboard sheet guided by a guide member with corrugated core paper facing outwards. The device includes a radiating device, an image capturing device, an image processing device, and an assessing device. The radiating device is configured to radiate light toward the core paper at a radiation angle relative to the single-faced cardboard sheet. The image capturing device is configured to capture an image of a portion of the core paper irradiated with the light. The image processing device is configured to a light portion and a dark portion in a direction in which the single-faced cardboard sheet is transported based on the captured image. The assessing device is configured to assess a quality by comparing a length of the light portion and a length of the dark portion.