JPH078411A - Coreless paper sheet roll and its manufacturing method - Google Patents

Abstract

PURPOSE:To provide the coreless roll which can be properly used by unwinding it up to winding of the innermost side, and its manufacturing method. CONSTITUTION:As for this roll, windings of at least several layers of the inside containing the winding of the innermost side are provided at a prescribed interval in the peripheral direction of the winding and stuck so that they can be peeled off mutually along lines being parallel mutually. As for its manufacturing method, a sheet P made of paper such as a toilet paper material or a paper towel material is wind-started around a winding center roller 26 whose cross section is like a gear. Also, this method consists of a process for pressing a pressure roller 28 against the winding center roller 26 through the wind-started sheet material, and a process for applying water or an adhesive agent dilution liquid to the surface of the pressure roller 28, and infiltrating water or the adhesive agent dilution liquid extending over the winding of at least several layers of the wind-start of the sheet P made of paper in the part in which water or the adhesive agent dilution liquid applied on the surface of the pressure roller 28 corresponds to the projecting part on the gear-like surface of the winding center roller 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet roll having a hole along the central axis, such as a toilet paper roll or a paper towel roll, in which a cylindrical core is not attached and a paper coreless roll. And a manufacturing method thereof.

[0002]

2. Description of the Related Art For example, when using a toilet paper roll, a supporting mandrel is usually passed through a hole formed in the center of the manuscript, and both ends of the mandrel are supported by a roll holder attached to a wall. It is designed to hold.

On the other hand, recently, roll holders which do not use the above-mentioned mandrel have been started to be used. That is, in this roll holder, as shown in FIG. 1, horizontal support protrusions 6 and 8 of 2 to 3 cm facing each other are provided from the frames 2 and 4 on both sides which define a space for storing the toilet paper roll. This support projection is inserted into both ends of the roll hole to support it.When setting the roll in the holder, the roll is set from the lower side of the storage space, and the support projection is fixed at its root end. It is designed to be lifted into the same space while pivoting upward to the center, and when the tip of the support protrusion is lifted to a certain height, both ends of the protrusion and the hole of the roll are aligned and the end portion of the roll is aligned. A support protrusion is inserted therein, and is returned to its original horizontal position by a spring to support the roll.

This roll holder is very convenient because it is easy to set and remove the roll, but when using a coreless roll, there are the following problems.

That is, when a coreless roll is used, since a reinforcing core is not attached to the peripheral wall of the central hole of this roll, when the roll is used and the number of windings decreases, the toilet paper is used. This means that the roll is bent by a force lateral to the axis applied when the roll is pulled out, and is disengaged from the support protrusion.

On the other hand, an attempt has been made to attach an adhesive to several layers inside the roll to increase its strength, but the layers to which the adhesive is attached adhere to each other, and the last layer. I know I can't roll it up.

[0007]

SUMMARY OF THE INVENTION In view of the above points of the present invention, even when the number of windings used is reduced, it is not bent by the force of unwinding the paper and can be completely unwound until the last winding. It is an object of the present invention to provide a coreless roll such as a toilet paper or paper towel and a method for manufacturing the same.

[0008]

That is, in the coreless roll according to the present invention, at least a few layers of windings including the innermost winding are provided with a predetermined interval in the circumferential direction of the windings. It is characterized in that they are releasably adhered to each other along a number of lines extending substantially in the axial direction of the roll.

According to the present invention, since a large number of linear portions extending in the axial direction of the windings of several layers adhered to each other with an adhesive are formed by the above-mentioned adhesion, it is possible to prevent bending due to the force of pulling out the paper. As the resistance is increased and the individual glued parts are linear, the pull-out forces allow each layer to be easily peeled off, thus ensuring complete pull-out to the last part of the paper. it can.

As a method of manufacturing such a roll,
In the present invention, a paper sheet of a toilet paper material or a paper towel material is started to be wound around a winding core roller having a gear-shaped cross section, and pressure is applied to the winding core roller via the rolled sheet material. The step of pressing the roller and the step of applying water or an adhesive diluting liquid to the surface of the pressure roller, and the water or adhesive diluting liquid applied to the surface of the pressure roller is a protrusion on the gear-like surface of the winding core. The step of permeating water or the diluent for diluting the adhesive over at least several layers at the beginning of the winding of the paper sheet at the portion corresponding to.

[0011]

Embodiments of the present invention will be described below with reference to FIG. 2 of the accompanying drawings.

FIG. 2 is a side view of a roll manufacturing apparatus for manufacturing the paper sheet roll according to the present invention.

That is, in this apparatus, the core roller 26 is placed between the pair of drive rollers 20 and 22 to rotationally drive the core roller 26, and the paper sheet P is wound around the core roller 26 to form a desired roll. Are formed. At the time of winding the paper sheet, the pressure roller 28 is rotated by the pressure roller 28 via the paper sheet to be wound.
It is pressed against 6 to tightly wind the paper sheet. When a paper sheet having a predetermined length is rolled to form a roll R having a required size, the rod of the pusher 30 is stretched to push the roll to the left side in the figure, and on the pair of receiving rollers 34, 34. And the pressure roller 28 is pulled up to mount a new winding core roller between the drive rollers 20 and 22, and the cutter 36 is used to separate the new winding core roller from the roll R extruded on the receiving roller 34. The paper sheet of 1 is cut, and the cut end is wound around the roll R extruded. At the same time, the end of the paper sheet cut by blowing air from the air nozzle 40 is folded back onto the new winding core roller 26, the pressure roller is lowered, and the winding of a new roll is started. The roll on the receiving roller is removed and the core roller is pulled out.

The above winding operation is the same as the conventional one, but the present invention is characterized by the following points.

That is, in the present invention, the winding core roller 26
As a cross section (specifically, a roller having a roll diameter of about 110 mm and a hole diameter of 30 to 35 mm, a winding core roller having protrusions of about 2 mm width at intervals of about 3 mm). Along with use, the surface of the pressure roller is diluted with water or an adhesive diluting liquid (for example, a commercially available water-soluble glue diluted 10 to 20 times) for a predetermined short time of starting winding, for example, several seconds. Is sprayed by the spray nozzle 42.

With this arrangement, the paper sheet to be wound around the winding core has the water or the adhesive dilution liquid applied to the surface of the pressure roller 28, and while the winding is small, the gear shape of the winding core is formed. Particularly pressure is applied between the projection surface of the cross section and the pressure roller, so that water or adhesive diluent is permeated in the pressure portion, and when they are dried, at least several layers are applied in the pressure portion. The rolls will be glued together. That is, when viewed in a completed roll, at least several layers of windings, including the innermost winding, are spaced in the circumferential direction of the roll and along a number of lines extending in the axial direction of the roll. Will be in a state of being bonded to each other.

In FIG. 2, reference numeral 46 denotes a spring-biased blade for leveling water sprayed on the surface of the pressure roller.

[0018]

The roll according to the present invention, as described above,
At least several layers including the innermost winding thereof are spaced in the circumferential direction of the roll, and are adhered to each other along a number of lines extending in the axial direction,
The resistance against the force that tries to bend the roll caused by the pulling force applied during the use of the paper sheet increases, and therefore even if the paper sheet is used and the winding becomes thin, Can withstand enough. Furthermore, since the adhesion between the inner layers is not performed on the entire surface but along the line as described above, it is easy to peel off only that portion, and it can be sufficiently peeled off by a normal pulling force. .

Therefore, in the roll according to the present invention,
Even without a core, the roll can be pulled out to the end.

Further, in the roll manufacturing method according to the present invention, the coreless roll as described above can be easily manufactured without making a great change to the conventional apparatus.

[Brief description of drawings]

FIG. 1 is a perspective view of a roll holder that has recently been used.

FIG. 2 is a side view of an apparatus for manufacturing a roll according to the present invention.

[Explanation of symbols]

P ---- Paper sheet; R ---- Coreless paper sheet roll; 26 ---- Core roller; 28 ---- Pressing roller.

Claims (2)

[Claims] 1. A coreless paper sheet roll formed by winding a paper sheet of a toilet paper material or a paper towel material, wherein at least several inner layers including the innermost winding of the core are wound. A coreless sheet roll made of paper, which is peelably bonded to each other along lines that are parallel to each other at predetermined intervals in the circumferential direction. 2. A paper sheet of a toilet paper material or a paper towel material is started to be wound around a winding core having a gear-shaped cross section, and a pressure roller is provided to the winding core via the rolled sheet material. Step of pressing, water or adhesive diluent is applied to the surface of the pressure roller, and the water or adhesive diluent applied to the surface of the pressure roller corresponds to the protrusions on the gear-like surface of the winding core. A method of manufacturing a coreless paper sheet roller, which comprises a step of permeating water or an adhesive diluting liquid over at least several layers at the beginning of winding the paper sheet at a portion.