Abstract: A drying device having a travel path along which a web (W) of paper travels, a plurality of drying ovens arranged side by side along the travel path, a plurality of conveyor rolls provided in each of the drying ovens to convey the web (W) along the travel path, a plurality of roll units each constituted by one or more of the conveyor rolls and separated from each other along the travel path, and a plurality of conveyor motors connected to the respective roll units to rotate the conveyor rolls, wherein a downstream one of the roll units with respect to the travel path is rotated at a lower rotating speed than an upstream one of the roll units.

Abstract: A low ignition propensity cigarette has wrapping paper (6) wrapping filling material into a rod-like shape, and the wrapping paper (6) includes highly conducting bands (10) formed by calendering and arranged in a longitudinal direction of the cigarette, the highly conducting bands (10) having higher thermal conductivity than inherent thermal conductivity of the wrapping paper (6), and burning depression bands (16) formed in the wrapping paper (6) and superposed upon the respective highly conducting bands (10).

Abstract: A manufacturing machine for manufacturing a wrapping paper web for cigarettes with a low ignition propensity has a coating device (3) at a coating position defined in a travel path (2) of web (W). The coating device (3) has a rotary screen (4) and a gravure roller (6) located on the opposite sides of the travel path (2) and functioning as back rollers for each other. The rotary screen (4) intermittently applies a liquid burning inhibitor onto one side of the web (W) to form a number of band layers (B) arranged at predetermined intervals in a travelling direction of the web (W), and the gravure roller (6) applies water onto the other side of the web (W) to form wet bands (A) arranged alternately with the band layers (B) in the traveling direction of the web (W).

Abstract: There is provided a machine of manufacturing a low fire-spreading web, having a travel path (2) through which a paper web (W) travels; an applicator (3) that is interposed in the travel path (2) and used to apply a combustion inhibitor (7) onto the web (W); and a dryer (4) that dries the web (W) applied with the combustion inhibitor (7), further including a detector (9) that measures a parameter indicative of width of the web (W) that has passed through the dryer (4); and a controller (10) that controls a drying condition of the dryer (4) on the basis of a measurement result obtained by the detector (9) so that the width of the web (W) falls within an allowable range.

Abstract: A band detection sensor includes LEDs configured to radiate detection light onto one side of a web, photodiodes configured to receive the detection light reflected by the web and output a detection signal corresponding to the detection light, and a discrimination section configured to discriminate bands on the web on the basis of the detection signal from the photodiodes, wherein the discrimination section includes a rise discriminating criterion indicating a rate of rise of the detection signal and generates a band signal indicative of the presence of a band when change of the detection signal fulfills the rise discriminating criterion.

Abstract: A method of manufacturing coated paper by applying a coating liquid to a strip-shaped web of paper to form a plurality of bands extending in the width direction of the web and spaced from each other in the longitudinal direction of the web includes: a coating step (S1) of applying the coating liquid to the web to form the bands with a coating band pitch narrower than a design band pitch defined as a standard for the coated paper; an aftertreatment step (S2), executed after the coating step, of drying the web; and a tension applying step (S3), executed after the aftertreatment step, of expanding the band pitch of the web by applying tension to the web to cause the band pitch of the web to approach the design band pitch.

Abstract: An inspection system for coated paper includes a traveling web of paper, a coating device for forming bands on the web by applying a coating liquid in the width direction of the web such that the bands are spaced from each other in the longitudinal direction of the web at regular intervals, a drying device for drying the web having the bands, a detection unit which is arranged downstream of the coating device for detecting at least either defect in the bands or defect in the web that is caused due to application of the coating liquid. A control device is inputted with the detection result from the detection unit and includes a determination section for determining the type of defect from the detection result. A quality control unit is inputted with the determination result from the determination section and configured to manage the determination result.

Abstract: The present invention provides a machine for manufacturing low ignition propensity wrapping paper for cigarettes having combustion inhibition bands (B) intermittently formed on a web of paper by applying a combustion inhibition agent solution to the web by transfer. The machine includes a gravure roll (34) for forming combustion inhibition bands (B) on a web, the gravure roll (34) having recesses (66) in an outer circumferential surface for receiving the combustion inhibition agent solution, the recesses (66) each having a contour corresponding to the contour of the to-be-formed combustion inhibition band and having a large number of lands (68; 70) distributed therein and constituting parts of the outer circumferential surface of the gravure roll, and the recesses each being designed such that the total area of the lands within the recess is smaller than the area of the recess excluding the lands.

Abstract: Apparatus for making coated paper serving as lower ignition propensity paper for cigarettes has a transport path (L) for a web (W), a coating unit (10) arranged on the path (L) to apply a combustion inhibition material to the web (W), a pre-dryer (16) for drying the web (W) with the material applied, a gravure roller (22) arranged downstream of the pre-dryer (16) to apply water to the web (W), a drying roller (34) arranged downstream of the roller (22) to post-dry the web (W), a smoothing roller (32) arranged between the roller (22) and the roller (34) to flatten wrinkles in the web (W) passing around the roller (32), a displacement sensor (42) for measuring wrinkles in the web (W) having passed around the roller (34), and a controller (44) for controlling tension in the web (W) on the basis of measurements received from the sensor (42).

Abstract: A method of manufacturing coated paper by applying a coating liquid to a strip-shaped web of paper to form a plurality of bands extending in the width direction of the web and spaced from each other in the longitudinal direction of the web includes: a coating step (S1) of applying the coating liquid to the web to form the bands with a coating band pitch narrower than a design band pitch defined as a standard for the coated paper; an aftertreatment step (S2), executed after the coating step, of drying the web; and a tension applying step (S3), executed after the aftertreatment step, of expanding the band pitch of the web by applying tension to the web to cause the band pitch of the web to approach the design band pitch.

Abstract: A band detection sensor includes LEDs configured to radiate detection light onto one side of a web, photodiodes configured to receive the detection light reflected by the web and output a detection signal corresponding to the detection light, and a discrimination section configured to discriminate bands on the web on the basis of the detection signal from the photodiodes, wherein the discrimination section includes a rise discriminating criterion indicating a rate of rise of the detection signal and generates a band signal indicative of the presence of a band when change of the detection signal fulfills the rise discriminating criterion.

Abstract: A drying device has a travel path (2) along which a web (W) of paper travels, a plurality of drying ovens (10) arranged side by side along the travel path (2), a plurality of conveyor rolls (23) provided in each of the drying ovens (10) to convey the web (W) along the travel path (2), a plurality of roll units (28a to 28c) each constituted by one or more of the conveyor rolls (23) and separated from each other along the travel path (2), and a plurality of conveyor motors (29) connected to the respective roll units (28a to 28c) to rotate the conveyor rolls (23), wherein a downstream one of the roll units with respect to the travel path is rotated at a lower rotating speed than an upstream one of the roll units.

Abstract: A low ignition propensity wrapping paper includes a paper web and bands arranged on the web at predetermined intervals in a longitudinal direction of the web. These bands are formed by applying a combustion-inhibition liquid onto the web. The combustion-inhibiting liquid contains a solvent and a combustion inhibitor that is sodium alginate or pectin dissolved in the solvent. The solvent is treated water obtained by substantially removing at least calcium ions and magnesium ions from raw water of a water supply or a well.

Abstract: The present invention provides a machine for manufacturing low ignition propensity wrapping paper for cigarettes having combustion inhibition bands (B) intermittently formed on a web of paper by applying a combustion inhibition agent solution to the web by transfer. The machine includes a gravure roll (34) for forming combustion inhibition bands (B) on a web, the gravure roll (34) having recesses (66) in an outer circumferential surface for receiving the combustion inhibition agent solution, the recesses (66) each having a contour corresponding to the contour of the to-be-formed combustion inhibition band and having a large number of lands (68; 70) distributed therein and constituting parts of the outer circumferential surface of the gravure roll, and the recesses each being designed such that the total area of the lands within the recess is smaller than the area of the recess excluding the lands.

Abstract: An inspection system for coated paper includes a traveling web of paper, a coating device for forming bands on the web by applying a coating liquid in the width direction of the web such that the bands are spaced from each other in the longitudinal direction of the web at regular intervals, a drying device for drying the web having the bands, a detection unit which is arranged downstream of the coating device for detecting at least either defect in the bands or defect in the web that is caused due to application of the coating liquid. A control device is inputted with the detection result from the detection unit and includes a determination section for determining the type of defect from the detection result. A quality control unit is inputted with the determination result from the determination section and configured to manage the determination result.

Abstract: A production method for producing a wrapper for cigarettes is provided wherein, with a web kept traveling, a combustion inhibitor in liquid form is intermittently applied to one surface of the web to form undried banded layers arranged with a predetermined space therebetween in the traveling direction of the web, water is applied to the surface of the web over its entire area before or after the combustion inhibitor is applied, and then the web is rapidly dried.

Abstract: There is provided a machine of manufacturing a low fire-spreading web, having a travel path (2) through which a paper web (W) travels; an applicator (3) that is interposed in the travel path (2) and used to apply a combustion inhibitor (7) onto the web (W); and a dryer (4) that dries the web (W) applied with the combustion inhibitor (7), further including a detector (9) that measures a parameter indicative of width of the web (W) that has passed through the dryer (4); and a controller (10) that controls a drying condition of the dryer (4) on the basis of a measurement result obtained by the detector (9) so that the width of the web (W) falls within an allowable range.

Abstract: Apparatus for making coated paper serving as lower ignition propensity paper for cigarettes has a transport path (L) for a web (W), a coating unit (10) arranged on the path (L) to apply a combustion inhibition material to the web (W), a pre-dryer (16) for drying the web (W) with the material applied, a gravure roller (22) arranged downstream of the pre-dryer (16) to apply water to the web (W), a drying roller (34) arranged downstream of the roller (22) to post-dry the web (W), a smoothing roller (32) arranged between the roller (22) and the roller (34) to flatten wrinkles in the web (W) passing around the roller (32), a displacement sensor (42) for measuring wrinkles in the web (W) having passed around the roller (34), and a controller (44) for controlling tension in the web (W) on the basis of measurements received from the sensor (42).

Abstract: A low ignition propensity wrapping paper includes a paper web and bands arranged on the web at predetermined intervals in a longitudinal direction of the web. These bands are formed by applying a combustion-inhibition liquid onto the web. The combustion-inhibiting liquid contains a solvent and a combustion inhibitor that is sodium alginate or pectin dissolved in the solvent. The solvent is treated water obtained by substantially removing at least calcium ions and magnesium ions from raw water of a water supply or a well.

Abstract: Web to be formed into wrapping paper is applied with combustion inhibitor and then dried. Water is applied onto the entire surface of the opposite side to the combustion-inhibitor applied side of the web. The web applied with water is dried while pinched between drying and pressing rollers and stretched in a width direction. In this way, unwrinkled high-quality cigarette wrapping paper having a low ignition propensity can be stably and inexpensively manufactured. As the pressing roller, a heat-resistant rubber roller provided in its surface with a soft portion in a helical way is utilized.