JPH06127758A - Manufacture of coreless towel paper roll and coreless towel paper roll manufactured thereby - Google Patents

Abstract

PURPOSE:To provide a manufacturing method for a towel paper roll in which taking-up can be carried out with a proper tension without using a paper tube. CONSTITUTION:In the initial stage and final stage of taking-up, taking-up is carried out by increasing the taking-up speed of a taking-up part (b) larger than the paper feeding speed of a paper feed working part, and after the completion of the taking-up process, a leaf is contracted, and a paper roll is pulled out from a winding shaft, and the towel paper roll R is produced. In this manufacturing method, the towel paper roll is wound into a roll form only by the paper for roll, and taking-up is carried out with the firm outer periphery of a hollow core, and the towel paper roll having the roll shape which is not destroyed for a long period can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of producing a coreless towel paper roll and a coreless towel paper roll produced thereby. The towel paper roll which is the object of the present invention refers to a roll of towel paper used in a commercial kitchen, a kitchen of a general household or the like. Towel paper rolls typically have a roll diameter of, for example, 50 to 150.
mm, a roll with a roll width of 150 to 300 mm.

[0002]

2. Description of the Related Art Towel paper rolls R are conventionally
A paper tube to be a core is used and a web is wound around the paper tube, and the completed towel paper roll has a paper tube c at the center as shown in FIG. It was
In such a towel paper roll with a paper tube c, since only the paper tube c remains after the towel paper is used, a restaurant, a hotel, etc., which consumes a large amount of water from the usual times, has a problem in its subsequent disposal.

Of course, the problem of disposing of the paper tube c can be solved by putting a towel paper roll that does not use the paper tube into practical use. Compared to paper, it has a low density and is crepe-processed so that it is highly flexible and very weak in strength. Therefore, the paper tube c is not wound as a core. Could not produce a towel paper roll. In other words, the idea of making a towel paper roll only with a wound web without using a paper tube was part of the industry as an idea, but even if you try to make a towel paper roll only with a web, Despite the fact that there is no technology that makes it possible and there is a potential demand, until now, towel paper rolls without paper cores have not yet been manufactured.

In view of such circumstances, it is an object of the present invention to provide a coreless towel paper roll and a method for producing the same.

[0005]

A method for producing a coreless towel paper roll of the present invention is a paper feeding process in which a web is fed from a winding roll after paper making, paper processing is performed as necessary, and the web is supplied to a winding part. The winding shaft comprises a part and a winding part for manufacturing a towel paper roll by winding a web on a winding shaft in a roll shape, and the winding shaft is provided with several rows of lugs which are provided in the winding tube body and appear in and out in the radial direction. A plurality of leaves, each of which has a circular arc-shaped cross section and is fixed to each of the lugs in each row and extends in the axial direction, and an outer tube having elasticity and good slipperiness, which covers the plurality of leaves. Using a paper winder, apply water-soluble glue to the web at the beginning of the winding process and continuously wind the web onto the winding shaft without applying the glue after the middle winding period. , The beginning of winding and the end of winding , The winding speed of the winding part is faster than the paper feeding speed of the paper feed processing part to form a towel paper roll, and after the winding process is completed, the leaf is shrunk to remove the towel paper roll from the winding shaft. It is characterized by extracting.

[0006] The towel paper roll of the present invention obtained by the above-mentioned production method is a roll wound with only the web, and the initial winding layer of the winding layer is tightly wound,
A hollow core is formed only from the web, and a softly wound winding layer is formed on the outer layer of the hollow core to finish the roll.

[0007]

The towel paper roll of the present invention is made only of the web forming the roll, and does not use a paper tube. Therefore, after the towel paper is used, nothing is left, so that the trouble of cleaning up is eliminated. Not at all.

According to the manufacturing method of the present invention, water-soluble glue is applied to the web at the beginning of winding to wind it, and the initial winding layers are adhered to each other. By increasing the paper feed speed in the paper feed processing part, even if the web stretches due to application of the glue of the aqueous solution at the beginning of winding, the stretch is absorbed and the web is wound onto the winding shaft with appropriate tension. be able to. Therefore, the winding initial layer can be made rigid and the winding initial layer can have strength as a hollow core. Also, at the end of winding, even if the paper is supplied at a speed faster than the mechanical part during deceleration due to the dynamic inertia, the winding speed in the winding part is higher than that in the paper feed processing part, so the paper overrun The run can be absorbed and can also be wound with appropriate tension. As a result, since the roll shape is fixed, the roll shape does not collapse for a long period of time.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 13 shows a typical winding machine currently used, and the mechanical parts thereof can be roughly divided into a paper feeding processing part A and a winding part B.

The paper feeding processing part A is a papermaking process using a paper machine, and the web W is unwound from a winding roll Ro which is usually wound to have a diameter of 800 to 2000 mm and a width of 800 to 2000 mm, and paper is processed if necessary and wound. The part to be supplied to the take part B. There are various types of paper processing such as embossing processing, perforation processing, and crepe processing that are added in the paper feeding processing part A, and these processing mechanisms are appropriately incorporated in the paper feeding processing part A. In the illustrated embodiment, 23 is an embossed portion, 21 is a perforated portion, and 22 is a guide roller.

The winding part B is a part for winding the web W on the winding shaft 1 to manufacture the coreless towel paper roll R, and only the most important parts are shown in the drawings. That is, the winding part B is mainly composed of the driving rollers 2, 3, the riding roller 4, the nip roller 5, and the like. In the winding part B, the web W fed on the winding shaft 1 is wound while the driving rollers 2 and 3 are rotated, and the towel paper roll R on the winding shaft 1 is moved by the riding roller 4. I try to press it.

Details of the winding part B will be described with reference to FIG. This figure shows the state of the beginning of winding the web W. The winding roll Ro after papermaking has a width of 800 to 2000 mm and is fed as wide as it is, but is cut by the cutter 6 to a paper width of 150 to 300 mm. Reference numeral 7 denotes a pedestal for receiving the rolled towel paper roll R, and 8 denotes a knife for cutting the tail end of the rolled towel paper roll R in the width direction. A glue transfer roll 9 is composed of a tank 9a containing water-soluble glue and transfer rolls 9b, 9c, 9d. Several glue transfer units are provided at equal intervals in the width direction of the web W. There is. As shown in FIG. 3, the transfer roll 9 applies the adhesive g in a band shape at intervals.

When the towel paper roll R, which has been wound up first, is placed on the pedestal 7, the web W is cut by the knife 8, and the web W at the portion shown by the broken line is on the winding shaft 1 as shown by the solid line. Wrapped around. At the same time, the water-soluble glue g for adhesion is applied, and the riding doll 4 descends and the drive rolls 2 and 3 start to rotate. Since the web W is temporarily adhered to the winding shaft 1 and the winding layers of the web W by the adhesive action of the glue, the web W is wound by the rotation of the drive rollers 2 and 3.
The winding diameter of the towel paper roll R is gradually increased. The period during which the glue g is applied is called the initial stage of winding, and this period may coincide with the increase region of the winding speed or may partially overlap. As shown in FIG. 4, when the winding diameter of the towel paper R becomes large to some extent, the medium winding period in which the towel paper R is operated is started, and as shown in FIG. 5, the winding diameter becomes large and decelerates when approaching the finished dimension. After that, it moves to the end of winding, where it stops at the end. In the figure, d1,
d2 and d3 indicate the initial winding period, the middle winding period, and the final winding period in the winding diameter of the towel paper roll R.

FIG. 6 shows changes in the winding speed Sa and the paper feed speed Sb in the above-described single winding process.
In the figure, Sp is the winding speed, Tm is the winding time, and as shown in the figure, the winding speed Sb in the winding part B is the initial winding d1 with respect to the paper feeding speed Sa in the paper feeding processing part A. It is faster at the end of winding d3 and the same at the middle of winding d2.

According to the winding method described above, since the paper feed speed Sb is faster than the winding speed Sa at the initial winding time d1, the elongation of the web W due to the spraying of the glue is absorbed, and an appropriate tension is applied. Since it is rolled up, the web can be rolled up tightly. In the middle winding period d2, since the winding speed Sb and the paper feed speed Sa match, the tension during winding gradually decreases, and the winding is performed softly. Further, at the end of winding d3, the winding speed Sb is faster than the paper feeding speed Sa, but the dynamic inertia in the paper feeding direction acts on the web W being wound, so the tension is reduced and the winding is still soft. To be As a result, the initial winding d1 is tightly wound, and the towel paper roll is gradually softly wound from the middle winding layer to the outermost layer. Then, by winding in this way, it is possible to obtain the paper roll R which does not lose its shape.

The speed differences Sd1 and Sd2 between the winding speed Sb and the paper feeding speed Sa are determined in order to obtain the appropriate ratio of the web W stretching ratio due to the spraying of glue, the deceleration ratio due to the influence of dynamic inertia, and the appropriate tension. It can be calculated from the required speed difference. Normally, the speed differences Sd1 and Sd2 are about 10%, but of course, they may be lower or higher than 10% depending on the structure and performance of the winder, the paper quality of the web W, and the like. Further, in the example of FIG. 6, the initial winding period in which the winding speed Sa is faster than the paper feed speed Sb coincides with the speed increasing region, but as shown in FIG. Alternatively, as shown in FIG. 8, the initial winding may exceed the speed increasing area and enter a part of the constant speed operation area. Similarly, at the end of winding, it may be a part of the deceleration region of the entire winding machine or a part of the constant speed operation region.

In the present invention, the speed may be finely adjusted to make the winding tension appropriate. It is, for example,
Since the web W is wound under tension, the drive roll 2 is accelerated by about 0.2% and the drive roll 3 is accelerated by about 0.3% with respect to the paper feeding speed in the paper feed processing part A. The riding roll 4 also accelerates by about 0.4%. Therefore, when the paper feed speed Sa is 1.00, the speed ratio is as shown in the table below. Table 1 Winding initial Medium winding Medium end Final winding Drive roll 2: 1.12 1.02 1.12 Drive roll 3: 1.13 1.03 1.13 Roll 4: 1.14 1.04 1.14 Paper feed processing part: 1.00 1.00 1.00

Next, details of the winding shaft 1 used in the winding part B will be described. FIG. 9 is a partially cutaway perspective view of the winding shaft 1 according to one embodiment of the present invention, and FIG. 10 is an enlarged sectional view of the winding shaft 1. 9 to 10, 1a is a reel cylinder,
It is a metal pipe with the rigidity required for a winding shaft.
Bearing portions 16 for supporting the winding shaft 1 during the winding operation are formed at both ends of the cylindrical body 1a. Inside the cylinder 1a, a rubber or urethane elastic tube 17 (see FIG. 10)
Is inserted, and air can be supplied to and discharged from the elastic tube 17 through an air supply port 15 provided at one end of the winding shaft 1. The elastic tube 17 is connected to the air supply port 15
The end that is not connected to is closed and expands in the radial direction when air is injected, and contracts when air is discharged.

The cylindrical body 1a is provided with long holes 14 at 120 ° intervals in the circumferential direction, and several holes 14 are made at appropriate intervals along the axial direction. Then, each long hole 14 has a lug 12
Has been inserted so that it can appear and disappear. A catch 18 having an arcuate cross-section and extending in the axial direction is fixed to the lower end of the lug 12, and the catch 18 is located between the inner circumference of the cylindrical body 1a and the outer circumference of the elastic tube 17. In the present specification, the "row" means a group of elongated holes 14 or lugs 12 that are present on the same line in the axial direction. In the illustrated embodiment, there are three rows of ten holes 14 and lugs 10 in each row.
Have twelve. The leaves 10 are fixed to the lugs 12 in each row. The leaf 10 is made of duralumin and may be integrated with the lug 12 or may be a separate body fixed by bolting or the like. Leaf 10
Has a circular arc-shaped cross section and extends in the axial direction. Therefore, when the leaves 10 are fixed to the lugs 12 in each row, a slight axial gap is formed between the adjacent leaves 10, but the outer periphery of the cylindrical body 1 is almost entirely covered by the leaves 10 except for the gap. Will be seen. Of course, three rows of leaves 10
The perimeter defined by must be circular.

Although the winding shaft 1 of the above embodiment has three rows of lugs 12 and leaves 10, it may have four rows or five rows or more. Also, the number of each column is arbitrary,
The number may be 9 or less, or 11 or more. In addition, the leaf
10 may be fixed to each row one by one, or may be divided into two or more and fixed when the winding shaft is long. The outer tube 11 is provided on the outer circumference of the leaf 10 so as to surround it.
Is covered. The outer tube 11 may be any one as long as it has elasticity and good slidability, and, for example, a urethane resin tube or the like is preferably used.

In the embodiment having the above structure, when air is injected into the elastic tube 17 from the air supply port 15, the leaf 10 is bulged outward in the radial direction as shown in FIG. 11, and when the air is exhausted, it is shown in FIG. Thus the leaf 10 is retracted radially inward.

When the towel paper roll R is wound on the winding shaft 1 of this embodiment, as shown in FIG.
Wind 10 with 10 protruding outward in the radial direction. In this case, the outer tube 11 exists on the outer periphery of the three leaves 10, and the outer peripheral shape thereof is almost a perfect circle.
The gap d between them is closed. Since the inner peripheral surface of the towel paper roll R is entirely in contact with the outer peripheral surface of the outer tube 11, the paper roll R can be wound without using the paper tube as a core. When the winding shaft 1 of this embodiment is used, the paper is pushed into the gap d,
Since it is not pinched, no ridge is formed on the inner peripheral surface of the hollow h of the towel paper roll R.

Since the roll is compressed during the winding operation, the shape of the towel paper roll which has been wound up is fixed, and the shape can be maintained for a long time, and the shape does not collapse. Absent. When the winding process is completed,
As shown in FIG. 12, the air is exhausted and the leaf 10 is contracted. Then, the inner peripheral surface of the rolled towel paper roll R
Since a slight gap c is formed between Ti and the outer tube 11, the towel paper roll R can be pulled out from the winding shaft 1. In this case, since the outer tube 11 has a good slidability, the towel paper roll R can be easily pulled out and the shape of the towel paper roll R is not deformed.

FIG. 1 shows a coreless towel paper roll R of the present invention obtained by the above manufacturing method. As shown in the figure, this coreless towel paper roll R does not use a paper tube, and becomes a roll-shaped roll by simply winding the roll paper b. A hollow h is formed in the center of the winding body, and the winding initial layer around the winding h is firmly adhered with glue and has sufficient strength, so that the roll shape does not collapse for a long period of time. .

[0025]

According to the manufacturing method of the present invention, it is possible to manufacture a coreless towel paper roll which has been impossible in the past and which does not lose its shape for a long time. With the paper roll of the present invention, it is possible to achieve cost reduction and resource saving because it does not take time to dispose of the paper core and the paper core is unnecessary.

[Brief description of drawings]

FIG. 1 is a perspective view of a coreless towel paper roll according to an embodiment of the present invention.

FIG. 2 is a detailed view of a winding part B in the winding machine.

FIG. 3 is an explanatory diagram showing a transfer state of glue.

FIG. 4 is an explanatory view showing an initial winding stage of a towel paper roll.

FIG. 5 is an explanatory diagram showing the end of winding the towel paper roll.

FIG. 6 is a time / winding speed-related diagram in the production method of the present invention.

FIG. 7 is a time / winding speed-related diagram in the production method of the present invention.

FIG. 8 is a time / winding speed-related diagram in the production method of the present invention.

FIG. 9 is a perspective view of a winding shaft according to an embodiment of the present invention.

FIG. 10 is an enlarged sectional view of the winding shaft 1.

FIG. 11 is a cross-sectional view showing the winding shaft 1 during the winding operation.

FIG. 12 is a cross-sectional view showing the winding shaft 1 during the operation of extracting the towel paper roll.

FIG. 13 is an explanatory diagram of a typical winder.

FIG. 14 is a perspective view of a towel paper roll with a paper tube according to a conventional manufacturing method.

[Explanation of symbols]

R Towel Paper Roll W Web A
Paper feed processing part B Winding part 1 Reel shaft 9
Injection nozzle 10 Leaf 11 Exterior tube

Claims (2)

[Claims] 1. A paper feed processing part for feeding a web from a winding roll after paper making, performing paper processing if necessary and supplying the web to a winding part, and a towel for winding the web in a roll shape on a winding shaft. The roll comprises a winding part for manufacturing a paper roll, and the winding shaft has a plurality of rows of lugs protruding and retracting in the radial direction provided on the winding cylinder, and a cross-sectional shape individually fixed to the lugs of each row is a circle. Using a paper winder consisting of a plurality of arc-shaped axially extending leaves and an outer tube that is elastic and has good slipperiness to cover the plurality of leaves, and in the initial winding stage of the winding process, After applying the water-soluble glue to the web, continuously winding the web onto the winding shaft without applying the glue after the middle winding period, and winding the winding part at the beginning and end of winding. Set the speed faster than the paper feed speed of the paper feed processing part. Wound with towel paper to form a roll, the winding-up process of centerless towel paper roll leaf is deflated after completion, characterized in that extracting the towel paper roll from the winding shaft by. 2. A towel paper roll wound in a roll shape only with a web, wherein an initial winding layer of the winding layer is tightly wound to form a hollow core only with the web, and a soft outer layer thereof. The wound-up winding layer is formed,
The coreless towel paper roll obtained by the method according to claim 1, which is finished into a roll.