JP4724684B2 - Sanitary paper manufacturing apparatus and sanitary paper manufacturing method - Google Patents

Description

The present invention relates to a sanitary paper manufacturing apparatus and a sanitary paper manufacturing method from which paper dust has been removed.

  The paper dust mixed during the sanitary paper roll in the tissue making process is sent to the next processing process as it is. In order to remove such paper dust, conventionally, in the course of the manufacturing process, sanitary paper is vibrated, the lifted paper powder is released by air ejection, and the released paper powder is sucked by an air suction head. Incorporation has been proposed (see Patent Document 1).

  In addition, paper dust that blows high-speed air in the direction opposite to the paper traveling direction, separates the paper dust from the paper surface by centrifugal force applied to the paper surface and high-speed air discharge force, and sucks the paper dust by the suction device. A removal device has also been proposed (see Patent Document 2).

  On the other hand, in a manufacturing process of box-type tissue paper, an interfolder used for stacking a plurality of continuous sheets while folding them by a folded plate group including a plurality of folded plates is known. In this folding plate type interfolder, the edge of the folding plate and the continuous sheet rub against each other, so paper dust is likely to be generated, the paper dust accumulates on the folding plate, and rarely the paper dust falls as a lump, May be mixed into the product. For this reason, a plurality of nozzles that eject air toward the folded plate are fixed to remove paper dust that accumulates on the folded plate, but there are problems such as the formation of parts that are not exposed to air. An inter-folder provided with means has been proposed (see Patent Document 3).

  Also, in order to remove paper dust from the paper, by generating ultrasonic waves from the ultrasonic generator, the paper powder adhering to the surface of the paper and the paper powder inside the paper is separated from the paper, and by the suction device, A paper dust removing device that sucks paper dust has been proposed (see Patent Document 4).

  Further, as a paper dust removing device inside a printing press, a device has been proposed in which ultrasonic waves are irradiated on paper and the paper dust is adsorbed by an adhesive sheet (see Patent Document 5).

JP 2007-22710 A JP 2002-200591 A Japanese Patent No. 3655341 JP-A-9-39204 Japanese Utility Model Publication No. 4-96343

  However, the above-mentioned conventional paper dust removing devices such as sanitary paper and printing paper require a large-scale device such as an ultrasonic generator, an air ejection device, an air suction device, and the like. there were.

  The present invention has been made in view of the above-described conventional problems, and the object of the present invention is to remove paper dust from sanitary paper efficiently without requiring a large apparatus in the sanitary paper manufacturing process. It is an object of the present invention to provide an apparatus for manufacturing sanitary paper from which paper dust is removed.

As a result of extensive studies, the inventor has a polygonal roll portion at a location where the sanitary paper is conveyed upward in the conveyance path between the sanitary paper original fabric roll and the folding machine, and the polygon roll portion is used as the sanitary paper. It has been found that the above-mentioned object can be achieved by contacting paper and vibrating the sanitary paper to remove paper dust, and the present invention has been achieved.

According to the present invention, the hygienic paper is provided near the location where the sanitary paper is transported upward in the middle of the sanitary paper feed path that is fed from the sanitary paper roll and is attached with paper dust, and has a rotating shaft. And a polygonal roll section having a polygonal cross section perpendicular to the rotation axis, a drive section for driving the polygon roll section, and a folding machine for folding sanitary paper from which paper dust has been removed. Is provided so that the polygonal roll portion rotates in the same direction as the sanitary paper transport direction in contact with or away from the sanitary paper transported, and in the transport direction along with the transport of the sanitary paper By rotating the polygonal roll part in the same direction as the polygonal roll part, the polygonal roll part repeatedly contacts the sanitary paper at high pressure and low pressure, or presses and detaches, and vibrates the sanitary paper to remove the paper dust. Sanitary paper to be removed Manufacturing apparatus is provided.

In the manufacturing apparatus of the present invention, it is preferable that the surface of the polygonal roll portion is subjected to surface processing such as processing with polytetrafluoroethylene or plating processing for preventing adhesion of the paper powder.

  In addition, in the present invention, it is preferable that the corners on the surface of the polygonal roll are formed in an arc shape in order to prevent sanitary paper from being cut or damaged.

Further, according to the present invention, the sanitary paper fed out from the sanitary paper roll and adhered to the paper dust is perpendicular to the rotation axis at a location where the sanitary paper is conveyed upward in the middle of the conveyance path. When the polygonal roll section having a polygonal cross section rotates in the same direction as the sanitary paper transport direction, the polygon roll section repeatedly contacts the sanitary paper with high pressure and low pressure, or presses and detaches. the sanitary paper a by vibrating to remove the paper dust, then interrupt folded free sanitary method for producing a paper feed in folding machine hygiene paper paper dust has been removed is provided.

  According to the present invention, it is possible to effectively shake off and remove the paper dust mixed in the sanitary paper roll during the tissue making process and attached to the sanitary paper.

  Further, when the surface of the polygonal roll part is processed or plated with polytetrafluoroethylene, it is possible to prevent the paper powder from adhering to the polygonal roll part and forming a large lump on the sanitary paper.

  Further, the corners of the surface of the polygonal roll portion are chamfered and formed into an arc shape, so that paper dust can be efficiently removed without damaging the sanitary paper.

  Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to the following embodiments, and changes, modifications, and improvements can be added without departing from the scope of the invention.

FIG. 1 is a schematic diagram showing an embodiment of a sanitary paper manufacturing apparatus according to the present invention. The manufacturing apparatus 1 is provided in a sanitary paper conveyance path between the sanitary paper source roll 20 for sanitary paper and the folder 30. The manufacturing apparatus 1 has a rotating shaft, and has a polygonal roll portion 10 having a polygonal cross section perpendicular to the rotating shaft, and a drive portion 11 that drives the polygonal roll portion 10. The rotation axis of the polygonal roll unit 10 is disposed away from the sanitary paper 25 to be transported, and is rotated in the same direction as the sanitary paper 25 transported from the sanitary paper original fabric roll 20 by the drive unit 11. In this embodiment, the polygonal roll unit 10 is installed so that the rotation axis thereof is in the horizontal direction in the vicinity of the location where the sanitary paper 25 is conveyed upward (vertical direction). Then, the polygon roll unit 10 repeatedly presses and releases the sanitary paper 25 while the polygon roll unit 10 rotates, so that the sanitary paper 25 is vibrated to remove the paper dust. Can be removed.

  In addition, although the said Example has shown the rotation axis | shaft of the polygon roll part 10 spaced apart from the sanitary paper 25, and the polygon roll part 10 and the sanitary paper 25 repeat press and detachment, this embodiment shows, The invention is not limited to this, and includes an embodiment in which the polygonal roll unit 10 is constantly in contact with the sanitary paper 25 and repeatedly contacts the sanitary paper 25 at high pressure and low pressure.

The sanitary paper roll 20 is rotated by the belt drive unit 21 and the sanitary paper 25 is fed out. The sanitary paper 25 is sent to the folding machine 30 and folded into a predetermined shape after paper dust is removed by the polygonal roll as described above.

  The rotational speed of the polygonal roll unit 10 is preferably the same as the transport speed of the sanitary paper 25 transported from the sanitary paper original roll 20, but there may be a slight speed difference. Specifically, the conveyance speed of the sanitary paper 25 is about 80 to 150 m / min, and the rotational speed of the polygonal roll unit 10 may be about 5 to 10% faster or slower than that.

  In the embodiment in which the polygonal roll unit 10 and the sanitary paper 25 are always in contact with each other and the contact at high pressure and low pressure is repeated, the polygonal roll unit 10 is provided with the sanitary paper 25 as shown in FIGS. Rotate in the same direction as the transport direction, and contact the sanitary paper 25 with high pressure at the corners of the surface of the polygonal roll unit 10, and contact the sanitary paper 25 with low pressure at the surface of the polygonal roll unit 10. According to the situation, that is, according to the rotation of the polygonal roll unit 10, the contact with the sanitary paper 25 at a high pressure (the state shown in FIG. 2A) and the contact at a low pressure (the state shown in FIG. 2B) are repeated. By repeating the contact at high pressure and the contact at low pressure, the sanitary paper 25 can be vibrated and the paper dust adhering to the sanitary paper 25 can be efficiently removed.

  In the embodiment in which the polygon roll unit 10 and the sanitary paper 25 are repeatedly pressed and detached, as shown in FIGS. 3A and 3B, the rotation axis center of the polygon roll unit 10 and the outer periphery of the polygon roll unit 10. The distance from the center of the surface is a, the distance between the rotation axis center of the polygon roll unit 10 and the corner tip of the polygon roll unit 10 is b, the distance between the rotation axis center of the polygon roll unit 10 and the sanitary paper 25 An arrangement in which the relationship of a <c <b is satisfied, where c is a preferable value is set. If it is such a positional relationship, the polygon roll part 10 rotates in the same direction as the conveyance direction of the sanitary paper 25, contacts the sanitary paper 25 at the corner of the surface of the polygon roll part 10, and the polygon roll The state of the surface of the portion 10 is not in contact with the sanitary paper 25, that is, the pressure on the sanitary paper 25 according to the rotation of the polygonal roll portion 10 (state of FIG. 3A) and separation (FIG. 3B). In other words, the hygiene paper 25 can be vibrated and the paper dust adhering to the hygiene paper 25 can be efficiently removed by repeating the pressing and releasing.

  The cross-sectional shape perpendicular to the rotation axis of the polygon roll portion 10 is not particularly limited as long as it is a polygon, but is preferably a triangle to a dodecagon, and particularly preferably a rectangle to a hexagon. Moreover, it is preferable that the corners of the polygonal roll portion 10 are formed in an arc shape, and thereby, the sanitary paper can be efficiently vibrated and paper dust can be removed without damaging the sanitary paper 25 in contact therewith. Moreover, since the sanitary paper 25 is vibrated more greatly when the number of corners is smaller, the efficiency of paper dust removal is improved.

  In addition, when paper dust adheres to the polygonal roll unit 10, there is a possibility that it becomes a lump of paper dust and adheres to the sanitary paper 25. Therefore, the surface of the polygonal roll portion 10 may be subjected to fluororesin processing, for example, polytetrafluoroethylene processing or plating processing so that paper dust does not easily adhere.

  The sanitary paper roll 20 is rotated by the power transmitted by the rotation of the belt of the belt driving unit 21 and feeds the sanitary paper 25. The sent sanitary paper 25 is sequentially sent to remove paper dust when passing through the region of the polygonal roll unit 10, and sent to the folding machine 30.

  In addition, as for the width | variety which the corner | angular part of the polygon roll part 10 pushes in the sanitary paper 25, 5-20 mm is preferable, Most preferably, it is 10-15 mm. If the sanitary paper is pushed and vibrated with this width, paper dust can be removed efficiently.

  Although the number of the polygon roll part 10 may be one, you may provide two or more. It suffices to provide the number of conditions that allow the paper dust of the sanitary paper 25 to be efficiently removed.

  In the case where a plurality of polygon roll portions 10 are provided, if the polygon roll portion 10 is provided so as to be in contact with both surfaces of the sanitary paper 25, the efficiency of sending out the sanitary paper 25 is deteriorated. Is preferably arranged so as not to hold the sanitary paper 25 from both sides.

  As shown in FIG. 1, it is preferable that the polygonal roll unit 10 is disposed at a portion that is fed from the sanitary paper original fabric roll 20 in the vertical direction (upward). That is, when the polygon roll unit 10 is disposed in a portion where the sanitary paper 25 is in the horizontal direction (horizontal direction), the paper dust may not be effectively removed from the sanitary paper 25. As described above, it is preferable to install the polygonal roll unit 10 at a location where the sanitary paper 25 is transported upward (vertical direction) above the sanitary paper original roll 20. The air may be sucked or blown to 25, and paper dust can be removed more efficiently.

The sanitary paper manufacturing apparatus and sanitary paper manufacturing method of the present invention can efficiently remove paper dust from sanitary paper, and can be preferably applied to the production process of sanitary paper such as tissue paper.

It is a schematic diagram which shows one Example of the manufacturing apparatus of the sanitary paper of this invention. It is a schematic diagram showing the contact state of the polygon roll part and the sanitary paper, (a) is a state where the polygon roll part is in contact with the sanitary paper at high pressure, (b) is a low pressure between the polygon roll part and the sanitary paper. Indicates the contact state. It is a schematic diagram which shows the contact state of a polygon roll part and a sanitary paper, (a) shows the state which the polygon roll part pressed the sanitary paper, (b) shows the state which the polygon roll part and the sanitary paper separated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Manufacturing apparatus , 10: Polygon roll part, 11: Drive part, 20: Sanitary paper original fabric roll, 21: Belt drive part, 30: Folding machine.

Claims (4)

The sanitary paper roll fed out from the sanitary paper roll is provided near the location where the sanitary paper is transported upward in the middle of the sanitary paper transport path to which paper dust adheres. A polygonal roll section having a polygonal vertical section;
A drive unit for driving the polygonal roll unit ;
A folding machine for folding sanitary paper from which paper dust has been removed ,
The rotating shaft is provided such that the polygonal roll portion rotates in the same direction as the sanitary paper transport direction in contact with or away from the sanitary paper to be transported,
With the conveyance of the sanitary paper, by rotating the polygon roll portion in the same direction as the transport direction, the polygon roll portion repeatedly contacts the sanitary paper at high pressure and low pressure, or presses and detaches, An apparatus for manufacturing sanitary paper that vibrates the sanitary paper to remove the paper dust . The sanitary paper manufacturing apparatus according to claim 1, wherein the surface of the polygonal roll portion is subjected to processing with polytetrafluoroethylene or plating to prevent adhesion of the paper powder . The sanitary paper manufacturing apparatus according to claim 2, wherein tip portions of corner portions on the surface of the polygonal roll portion are formed in an arc shape . The sanitary paper fed from the sanitary paper roll is adhered to the paper dust, and the section perpendicular to the rotation axis is polygonal at the part where the sanitary paper is transported upward in the middle of the transport path. While the square roll unit rotates in the same direction as the sanitary paper transport direction, the polygon roll unit repeatedly vibrates the sanitary paper by repeatedly contacting or pressing and releasing the sanitary paper at high and low pressures. the paper dust removal Te, then interrupt folded free method of manufacturing a sanitary paper sent to the folding machine hygiene paper paper dust is removed.

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