JPH06239503A - Producing method of toilet roll paper - Google Patents

Abstract

PURPOSE:To produce a coreloss roll paper easily, by rolling the roll starting terminal of a web around a roll care while spraying liquid thereon, rolling the web as long as the leught of a product to its outside and pulling out the roll core after the liquid has been dried. CONSTITUTION:In lined-up plural rolling devices 1, a wide web delivered out from an original roll is divided in product width by a slitter and each divided web is individually rolled around each divided roll core fitted around a roll shaft. In this case, web adhesive liquid (paste etc.) is stuck to the roll starting terminal of each divided web and the divided web is rolled around the roll shaft through the liquid. Then an obtained web roll body provided with the roll shaft is discharged on a carrying conveyor 117 and the roll shaft is pulled out by a removing device 2 for the web roll body provided with the roll core. The obtained web roll body provided with the roll core is guided into a stagnant device 4 in line and each roll core is pulled out by a core removing device 5 after the liquid has been dried naturally here.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a roll paper for toilet, and more particularly to a production method for producing a coreless roll paper having no core tube in its central portion.

[0002]

2. Description of the Related Art A hole for inserting a shaft of a roll paper holder provided in the toilet needs to be formed at the center of the roll paper for toilet. by the way,
A conventional general toilet roll paper is formed by winding a web around a paper core tube.

Further, in recent years, a shaft body (generally called an air shaft) which can be reduced and expanded in a radial direction is used,
After winding the web with the shaft expanded, the shaft is contracted (a gap is formed between the outer surface of the shaft and the inner surface of the hole of the roll paper), and the shaft is rolled in that state. There is known a manufacturing method in which a roll paper for a coreless toilet without a core tube is manufactured by removing the roll paper from a hole of the paper (see, for example, JP-A-4-55250). Further, in this known method for producing coreless roll paper, a long shaft is used, and a wide web having a length corresponding to a plurality of product widths is wound around the shaft. To form a roll paper. In such a coreless roll paper, it is preferable to keep the shape of the center hole as circular as possible because the shaft of the holder is inserted into the center hole.

By the way, in the above-mentioned known coreless roll paper manufacturing method, in order to maintain the shape of the center hole of the roll paper in a circular shape, the web winding start end is sprayed with an aqueous solution containing an adhesive while the web is being sprayed. The winding start end is wound around the outer peripheral surface of the shaft body, and the webs that are polymerized in the inward and outward directions are adhered with the aqueous solution. Further, if the web winding start end side is adhered with an aqueous solution in this way, the web and the shaft body will stick to each other while the web winding start end part is wet. Even if the shaft is contracted, the shaft cannot be removed properly, and therefore the shaft is removed after the web winding start end has been dried to some extent. The inner / outer polymerized web on the web winding start end side becomes hard enough to withstand use when the portion wetted by the aqueous solution is dried (the shape retention of the center hole of the roll paper is secured).

[0005]

However, in the above-mentioned general roll paper for toilet with a core tube, the core tube portion becomes high in cost, and the core tube remains after the web is used, and the core tube There is a problem that it takes time to dispose because it cannot be flushed to the toilet.

Further, in the above-mentioned known coreless roll paper manufacturing method (for example, in Japanese Patent Laid-Open No. 4-55250),
A shaft (generally called an air shaft) that can be reduced and expanded in the radial direction is used, but this shaft is very expensive, and the shaft is removed from the center hole of the roll paper. When removing, since the aqueous solution attached near the end of the web winding must be dried to some extent, the time for the drying (at least 30% for natural drying).
However, the shaft body cannot be used for the next web winding, and the time for restraining the expensive shaft body for drying becomes long. In particular, since the shaft is of a considerably long length and a wide web of a plurality of products is wound around the shaft, the moisture adhering to the vicinity of the web winding start end is When drying, the water near both ends in the length direction is released into the outside air in a relatively short time, but it takes a long time for the water near the middle portion in the length direction to be released into the outside air. Therefore, it takes a long time to dry the entire moisture, and the restraining time of the shaft body becomes longer. Further, in general, the web winding capacity in the web winding step is, of course, much larger than the processing capacity which is derived from the drying time of the web winding start end, and the number of shafts corresponding to the web winding capacity is large. However, there is a problem in that a considerably high equipment cost is required only for the shaft body.

In view of the above-mentioned conventional problems, it is a first object of the present invention to provide a coreless roll paper by using an inexpensive core.
A second object is to make it possible to easily and quickly dry the liquid attached to the web winding start end.

[0008]

The method for manufacturing a toilet roll roll paper according to claim 1 of the present application has an outer diameter substantially the same as the inner diameter of the center hole of the toilet roll paper and is altered even when contacted with water. Using a core formed of a tubular body of a non-material, first, around the core, the web winding start end is sprayed with a liquid for bonding a web to a predetermined small length range of the web winding start end. After winding while winding, a web winding step of sequentially winding a web of the product length on the outside to form a web winding body, and a web winding body formed around the winding core with the winding core attached. The web winding body is retained by the staying means for a time period during which the liquid attached to the web winding start end portion is naturally dried to such an extent that the core can be removed from the web winding body with the core, and the web winding is started. Dryer to dry the liquid attached to the edge And, it is characterized by performing the coring process to remove Remove the core from the winding core with the web winding body of the dried.

Further, the method of manufacturing a toilet roll paper according to claim 2 of the present invention has an outer diameter substantially equal to the inner diameter of the center hole of the toilet roll paper and the axial direction per product of the toilet roll paper. A web of a web having the same width as the length of the core is used around the core by using a core formed of a tubular body made of a material that does not deteriorate even when contacted with water. The web winding body is wound around the winding start end portion while spraying a liquid for adhering a web onto a predetermined small length range of the web winding start end portion, and then a web having a product length is sequentially wound on the outer side thereof. And a step of forming a web winding body around the winding core, while the web winding body is formed around the winding core, the liquid is attached to the web winding start end portion of the web winding body with the winding core by a staying means. To the extent that the core can be removed from the wound web with core It is possible to perform a drying step of staying for a drying time and drying the liquid attached to the web winding start end, and a core removing step of removing the core from the dried web winding body with a core. It has a feature.

Furthermore, the method for manufacturing a toilet roll paper according to claim 3 of the present application is characterized in that, in claim 1 or 2, the winding core is a tubular body having air permeability in the inner and outer directions. I am trying.

[0011]

According to the first aspect of the present invention, in the web winding step, first, the web winding start end is wound around the winding core while spraying the liquid for adhering the web onto the web winding start end. However, when the liquid is sprayed onto the web winding start end in this way, the webs in the parts wet with the liquid adhere to each other. That is, a toilet web is mainly composed of highly hydrophilic cellulose, and when the web is polymerized while being wet with a liquid, the hydroxyl groups (OH groups) in the cellulose are changed and the cellulose molecules are hydrogen-bonded to each other. The webs will adhere to each other. still,
The length range for spraying liquid at the web winding start end is
For example, after the web winding start end is wound around the winding core once, the web winding start end is continuously wound around the winding core several times (for example, about 3 to 5 times). Be seen.
Also, at that time, the water that wets the web sequentially permeates and diffuses in the web that is polymerized in the inward and outward directions.

When the web having the product length is wound around the core, the web winding body is separated from the web, and the web winding body with the core is removed from the web winding device.
In this state, the vicinity of the web winding start end is still wet, and if you try to remove the core without removing the core, the web winding start end will be deformed or torn, so it should be used as a product. I can't.

The web winding body with the core formed in the web winding step is dried in the drying step. In this drying step, the liquid attached to the web winding start end portion by the staying means is attached to the core. The web core is allowed to stay for a time (for example, about 30 to 40 minutes) to naturally dry the wound core so that the core can be removed. In this way, when the web winding body with the core having the web winding start end wetted is retained for a predetermined period of time by the retention means, the water that wets the web winding start end is sequentially polymerized in the inward and outward directions on the web. As it permeates and diffuses, it will evaporate into the outside air from both sides of the web winding body. Then, when the vicinity of the web winding start end portion containing water is dried, the swelled inner and outer polymerized webs are firmly tightened in an adhered state. In this state, a plurality of webs in the vicinity of the web winding start end are rigidly integrated to maintain a tubular shape, and an adhesive action by moisture is applied between the inner surface of the tubular portion and the outer surface of the winding core. Is almost gone.

In the core removing step, the core may be removed from the dried web-wound body with the core by, for example, a push-out method. In the coreless roll paper manufactured in this manner, a relatively hard tubular portion is formed in the center thereof, and a tubular hole is secured inside. Also, with this coreless roll paper, the web of the tubular portion at the center can be unwound and used, and since the web of the tubular portion dissolves easily when immersed in water, it can be poured into the toilet. There is no problem. The core removed from the web winding body is transported to the web winding step and repeatedly used.

Further, in the invention of claim 2 of the present application, as the winding core, one having the same length as the axial length of each roll of toilet roll paper is used, and the winding is provided around the winding core. Since the web having the same width as the length of the core is wound to form the web winding body with the core separated into the individual products, the length of each web winding body with the core is increased. Becomes shorter (for example, the axial length is 110 to 120 mm
The amount of water that wets the web winding start end portion in the vicinity of the intermediate portion in the axial direction during natural drying by the staying means is reduced to move to each end surface of the web winding body. In other words, the drying time of water at the web winding start end is shortened.

Further, according to the third aspect of the present invention, since the core has air permeability in the inward and outward directions, the moisture that wets the web winding start end portion during the natural drying by the retaining means is the tube wall of the core. Will also be released from the space inside the tube.

[0017]

According to the method of manufacturing a roll paper for toilet of the first aspect of the present invention, since it can be performed by using an inexpensive winding core, the facility cost can be reduced even if a coreless roll paper is manufactured. Also, in the drying process, since it is made to naturally dry for a predetermined time by using the retention means, special energy such as heating is not required to dry the web wound body wet with water, There is an effect that the operating cost can be reduced.

Further, according to the method for manufacturing a toilet roll paper according to claim 2 of the present application, a web having the same product width is wound around the core having the length of the product width in advance to separate the products one by one. Since the web winding body with a winding core is formed, the axial length of the web winding body with a winding core is shortened, and in the drying step, the water content that wets the web winding start end is exposed to the outside air. The time until it is released inside (drying time) is shortened, the time for restraining the core for drying can be shortened, the total number of cores used can be reduced, and the roll paper is commercialized. There is an effect that the time for can be shortened.

Further, according to the method for manufacturing toilet roll paper of claim 3 of the present application, since the core having air permeability in the inner and outer directions is used, the web winding start end is wet in the drying step. Moisture will pass through the tube wall of the winding core and be released from the space inside the tube, which can shorten the drying time (the total number of cores used can be reduced and the time required for the roll paper commercialization). Can be shortened).

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 9. In the method of manufacturing toilet roll paper according to this embodiment, a web winding process for winding a web T ₂ around a winding core Q is carried out. A drawing step, a drying step for drying the web winding body R with the core Q, and a core removing step for removing the core Q from the dried web winding body with the core Q are performed. A coreless roll paper R as shown in 9 is manufactured. Before describing the manufacturing method of this embodiment, the configuration of the devices used in this embodiment will be described.

FIG. 1 shows an entire production line for coreless roll paper. In FIG. 1, reference numeral 1 is a web winding device that winds a web having a product length around a winding shaft to form a web winding body with a winding core (see FIG. 2). still,
In the illustrated example, three web winding devices 1 are arranged side by side in total. Reference numeral 2 is a web winding body withdrawing device for removing the web winding body P with each core from the winding shaft U of the web winding body Y with a winding shaft (see FIG. 3) described later. Reference numeral 4 is a retention device that retains the water adhering to the web winding start portion for a predetermined time in order to dry it as described later (see FIGS. 5 to 7). The staying device 4 corresponds to staying means in the claims. Reference numeral 5 denotes a core removing device (see FIG. 8) for removing the core Q from the web winding body P with a core. Reference numeral 6 is a core-wound web winding body R
(See FIG. 9) A packing machine for packing a predetermined number of pieces at a time.

The winding core Q has an outer diameter (for example, an outer diameter of about 30 to 50 mm) which is substantially the same as the inner diameter of the center hole of commercially available toilet roll paper, and does not deteriorate even when it comes into contact with a liquid. It is made of a tubular body. Also, the core Q
A hole Qa (see FIG. 4) is formed inside the. The material of the core Q is preferably made of metal, wood, synthetic resin, or the like, and is durable enough to be used repeatedly. Further, it is also preferable to form a coating (for example, a Teflon coating) on the outer peripheral surface of the winding core Q for facilitating (slipping) the core during the core removing operation described later.

The winding core Q used in claim 2 of the present application is
The product has the same width as the web width. Further, in the winding core Q used in claim 3 of the present application, a tubular body having air permeability in the inner and outer directions is used.
In addition, as the structure for providing this breathability, the core Q
A large number of minute holes (for example, holes having a diameter of about 1 mm) penetrating inward and outward are formed on the entire surface of the tubular body, or a large number of fine communication passages are formed so as to communicate the inside and outside of the tube wall with a sponge when molding the tubular body It may be one.

As shown in FIG. 3, the winding cores Q are used by being fitted in a plurality of (for example, 16) one outside one common shaft V in a one-row state. Each of the winding cores Q, Q ... Is detachably attached to the common shaft V, and is used as a single shaft body (winding shaft) U at the time of use.

The take-up shaft U has a large number (for example, 16) of cylindrical winding cores Q, Q ... Outside fitted on one common shaft V, and both ends of the common shaft V. The caps (retaining members) W ₁ and W ₂ are formed by fitting them. In FIG. 3, the right cap W ₁ is a common shaft V
The cap W ₂ on the left side is removable from the common shaft V. And the left cap W ₂
If the cores are separated, the cores Q, Q ... Can be inserted into and removed from the common axis V.

The web winding device 1 is, as shown in FIG.
The wide continuous web T ₁ fed from the original roll S is divided into product widths (for example, 16 divisions) by the slitter device 11, and the divided webs T ₂ are supplied to the winding section 12. The winding unit 12 is sequentially supplied with one winding shaft U as shown in FIG.

The take-up shaft U is supplied to a predetermined position of the take-up section 12, and the divided webs T ₂ are respectively provided with the take-up cores Q, Q.
-It is wound at a position that corresponds exactly to. Further, when the winding start end of each divided web T ₂ is started to be wound on the take-up shaft U, as shown in FIG. 2, the liquid is atomized from the nozzle 13 into a predetermined small length range of the web winding start end. Be sprayed on.
This liquid is for adhering the webs at the web winding start portions that are polymerized in the inward and outward directions. Then, in the winding section 12, when the divided webs T ₂ each having the product length are wound around the respective winding cores Q, Q ... Of the winding shaft U,
The winding action of the web winding device 1 is stopped, and the web winding body X with a winding shaft formed by the winding portion 12 is discharged to the temporary receiving portion 14 and then cut by the blade 16 of the cutting device 15. At the same time as being separated from the continuous web, glue is applied to the cut end of the web winding body side by a glue device (not shown) so that the cut end is bonded to the outer surface of the web roll. (The web winding body Y with a winding shaft shown in FIG. 3 is formed). continue,
The separated web winding body Y with the take-up shaft is discharged onto the transport conveyor 117. In the production line of FIG. 1, three web winding devices 1 are arranged side by side, and each web winding device 1 individually manufactures a web winding body Y with a winding shaft.

From each web winding device 1 to the conveyor 11
Web winding body Y with a take-up shaft ejected onto 7 (Fig. 3)
After the left-side cap W ₂ is removed by the web-wound body with core removal device 2, the web rolls P, P, ... With cores are automatically removed from the common shaft V. Winding shaft U
Web winding body with each core P, P ...
Are separated from each other as shown in FIG.

From the terminal end of the conveyer 117, a group of web windings Z, Z each having a row of cores (for example, 16 web windings P having a core are arranged in a row).
(See FIG. 4) are sequentially supplied to the retention device 4 side.

As shown in FIG. 5 to FIG. 7, the staying device 4 sequentially receives the web winding body Z with the row-shaped winding cores conveyed by the conveyer 117 and retains it for a predetermined time, and the staying time The water attached to the web winding start end is naturally dried. This retention device 4
Is a length capable of holding a plurality of (for example, 16) web winding bodies P, P ... In a single row between a pair of endless chains 41, 41 arranged at a predetermined interval in the horizontal direction. A large number of trough-shaped receiving members 42, 42, ... With a predetermined equal interval (for example, 20 to 30 cm intervals) are interposed, and the endless chains 41, 41 are circulated by motors 43, 44. . Each endless chain 41, 41 is
A large number of sprockets (eg, 200
..) receiving members 42, 42 ... Can be circulated.

Further, the web winding bodies Z, Z, ... With columnar winding cores, which are conveyed to the terminal end of the conveyer 117, are sequentially loaded into the staying device 4 in the empty receiving member 42. After moving the charging device 45 and the inside of the staying device 4 for a predetermined time (for example, 20 to 40 minutes), the web winding body Z with a row-shaped winding core is continued from the receiving member 42 to the core removing device 5 side. Discharge device 46 for discharging onto the conveyer 141
And have. Further, the length and circulation speed of the endless chains 41, 41, the number of receiving members 42 used, and the like are such that the web winding body P with a core on the side of each web winding device 1, 1, 1 side.
Is appropriately set in consideration of the manufacturing speed, the required time for allowing the water content of the web-wound body P with a core to stay in a predetermined dry state in the retention device 4, and the like. Then, when the web winding body Z with row-shaped winding cores is discharged onto the conveyer 141 by the discharging device 46, the water content of each of the web winding bodies P, P. The core Q is dried to such an extent that it can be removed from the web winding body R. Incidentally, this type of retention device 4 is publicly known, for example, as disclosed in Japanese Utility Model Laid-Open No. 2-69607.

The dried web winding body Z with row-shaped winding cores, which has come out of the staying device 4, is sent to the core removing device 5 by the conveyor 141, where the web winding bodies P with winding cores are provided.
Then, the core Q is sequentially removed to form the core-extracted web winding body (coreless roll paper) R shown in FIG. As shown in FIG. 8, the centering device 5 of this embodiment employs a pusher piece 52 which is vertically moved by an air cylinder 51. The outer diameter of the pushing piece 52 is the same as or slightly smaller than the outer diameter of the winding core Q. In this core removing device 5, the web winding body P with a core to be cored is positioned immediately below the push piece 52 in the advancing direction, and the air cylinder 51 is moved.
By pushing down the pushing piece 52 and pressing the winding core Q portion with the pushing piece 52, the winding core Q can be removed downward from the web winding body R portion.

The core-removed web winding body R discharged from the core-coring device 5 is sequentially transferred to the packaging machine 6 by the conveyor 151.
It is conveyed to the side, and a predetermined number of bags are packed there.

Next, a method for manufacturing a toilet roll paper according to an embodiment of the present invention will be described using a coreless roll paper production line equipped with the web winding device 1, the retention device 4, the core removing device 5 and the like having the above construction. explain.

The web winding section 1 of the web winding apparatus 1
As shown in FIG. 2, a plurality of webs T ₂ are guided to the web ₂ in a state in which the product width is divided by a slitter 11. A winding shaft U having a plurality of winding cores Q, Q attached to a common shaft V is mounted on the web winding portion 12 so that each winding core Q corresponds to each web T _2. When the web winding start end is wound around the winding core Q almost once, while the liquid for adhering the web is sprayed uniformly from the nozzle 13 toward the web winding start end, Wrap each web winding start end on Q respectively. still,
An adhesive may be mixed in the liquid sprayed from the nozzle 13 if necessary. Further, the liquid spraying timing from the nozzle 13 is set such that the web winding start end is 1 around the winding core Q.
It is advisable to start the spraying when the winding is completed and to end the spraying when the web winding start end is wound around the winding core Q, for example, about 3 to 5 times.

The web used for the toilet is
A material that dissolves easily when wet with a liquid is used, but when the liquid is sprayed onto the web winding start end as described above, the cellulose in the wet web becomes hydrogen bonded to each other. , The webs that are polymerized in the inner and outer directions are bonded to each other.

Next, in the web winding section 12, after winding the web around each winding core Q for each product length,
The winding operation is once interrupted, the web winding body X with the core in the web winding portion 12 is discharged from the web winding portion 12 to the temporary receiving portion 14 side, and then the web winding device 15 winds the web. Separate the revolving body X. Then, as shown in FIG. 3, one web winding body Y with a take-up shaft is formed by winding the web winding bodies R, R ... around the winding cores Q, Q.

Next, the web winding body Y with the take-up shaft is disassembled by the web winding body removing device 2 with the winding core,
The web-wound bodies P, P, ... With cores are separated from the common axis V, respectively. Then, the separated web winding body Z with column-shaped winding cores (web winding bodies P, P ... With each winding core)
Is placed on a conveyor 117 as shown in FIG.
Then, it is sequentially supplied from the inlet of the staying device 4 to the receiving members 42, 42, ... Above the staying device 4 (see FIGS. 5 to 6). In the retention device 4, the web winding bodies P, P, ... With the respective cores mounted on the receiving members 42, 42.
As the vehicle travels 1, 41, it is moved in a vertical zigzag pattern. Then, the web winding body P, P, ...
While the water moves inside the staying device 4, the water that has wet the web winding start end is naturally dried.

That is, in this drying step, the water that has wet the web winding start end is released (evaporated) into the outside air from the exposed portion of the core-wound web winding body P to the outside air. When the winding core Q itself is not air-permeable, it is mainly discharged into the outside air from both axial end faces of the web winding body R, as indicated by an arrow A in FIG. 7. At this time, as in the illustrated example, the web-wound body P with a core is separated into individual products (corresponding to claim 2 of the present application).
Then, the axial length becomes relatively short. Therefore, the water near the axial end faces of the web winding body with a core P spontaneously evaporates from the respective end faces in a short time, while the moisture in the vicinity of the intermediate portion in the axial direction also moves to the respective end face sides. However, since the length from the intermediate portion in the axial direction to the end face is short, the water in the vicinity of the intermediate portion in the axial direction is also released into the outside air in a relatively short time. Further, if the core Q itself is made to have air permeability (corresponding to claim 3 of the present application), the water near the web winding start end is not only from both end surfaces of the web winding body R but also as shown by the arrow B. In addition, it passes through the tube wall of the winding core Q inward and is also discharged into the winding core hole Qa, so that the drying inside the retention device 4 can be further shortened.
The water released into the core hole Qa is released into the outside air from both openings of the core hole.

When the water near the web winding start end is dried in this manner, the webs near the web winding start end are bonded to each other by hydrogen bonding. When the webs are adhered to each other in this manner, a considerably hard cylindrical body (a portion R _{2 in} FIG. 9) is formed near the web winding start end.

Next, the web winding body P with a core, which has completed the drying process in the staying device 4, is discharged onto the conveyor 141 by the discharging device 46 of the staying device 4, and the core removing process side is performed. Sent to. In this coring process, the coring device 5
The air cylinder 5 of the core removing device 5 with the core Q portion of the web winding body with core P positioned immediately below the pushing piece 52 of
1 is extended, and the core Q portion is pulled out with respect to the web winding body R by the pushing piece 52.

The roll paper R (FIG. 9) manufactured in this way has a hole R ₁ formed in the center thereof, and the tubular portion R ₂ forming the side surface of the hole R ₁ solidifies the web. The tubular portion R
₂ has a shape-retaining property, and the web of the tubular portion R ₂ can be unwound to the end and used, and moreover, it dissolves easily when immersed in water, so that it can be flushed to the toilet after use.

Winding core Q removed from web winding body R
Are reassembled on the common shaft V (FIG. 3) and used in the next web winding process.

In the above-mentioned method for manufacturing toilet roll paper, since the pipe-shaped tubular body can simply be used as the core Q, the cost of the core Q can be kept low. In addition, the web winding body P with a core formed in a state where the web winding start end is wet with liquid is retained in the retention device 4 for a predetermined time, so that the moisture that has wetted the web winding start end is retained. Since the web is wound in the vicinity of the winding start end by air-drying, the core Q is removed from the web winding body with the core by the core removing device 5, so that the center of the web winding body is removed. The coreless roll paper in which the relatively hard tubular portion R ₂ is formed can be manufactured.
Further, if the staying device 4 is used to naturally dry in the drying step, energy for drying is unnecessary (for example, heat energy is required for heat drying). Further, in the drying step, when the web winding body P with the core is naturally dried in a state where the web winding body P with the core length is set to one product, the axial length of the web winding body P with the core core is short. Therefore, the length to each axial end surface from which moisture is released is shortened, and the drying time is shortened accordingly. Further, when a breathable core Q is used, the water near the starting end of the web can be released through the tube wall of the core Q through the core hole Qa, and the drying time can be improved. It can be further shortened. When the drying time is shortened in this way, the time for forming the hard tubular portion R ₂ in the central portion of the web winding body can be shortened, and it is necessary to remove the core Q in the core removing step until the core Q is removed. The time during which the winding core Q is restrained can be shortened, and moreover, the time required for commercializing the roll paper can be shortened.

[Brief description of drawings]

FIG. 1 is a schematic view of a production line for performing a roll paper production method according to an embodiment of the present invention.

2 is an explanatory diagram of a web winding device for performing a web winding step in the manufacturing line of FIG. 1. FIG.

3 is an explanatory diagram of a web winding body with a winding shaft manufactured by the web winding device of FIG. 2. FIG.

FIG. 4 is an explanatory view showing a state in which a web winding body with a winding core is removed from a winding shaft of the web winding body with a winding shaft shown in FIG. 3;

5 is an explanatory view (a view taken along the line VV in FIG. 1) of a retention device for performing a drying process in the production line of FIG.

6 is a view taken along the line VI-VI in FIG.

7 is a partially enlarged cross-sectional view of the retention device in FIG.

FIG. 8 is an explanatory diagram of a centering device for performing a centering step in the production line of FIG.

FIG. 9 is a perspective view of a roll paper manufactured by the roll paper manufacturing method according to the embodiment of the present invention.

[Explanation of symbols]

1 is a web winding device, 4 is a staying device, 5 is a core removing device, P is a web winding body with a core, Q is a core, and R is a coreless roll paper.

Claims (3)

[Claims] 1. A core comprising a tubular body made of a material which has an outer diameter substantially the same as the inner diameter of the center hole of a toilet roll paper and does not deteriorate even when contacted with water. First, the web winding start end is wrapped around a predetermined small length range of the web winding start end while being sprayed with a liquid for adhering the web, and then the web having the product length is sequentially wound on the outer side thereof. And a web winding step of forming a web winding body with the web winding body, and the web winding body with the winding core is attached to the web winding start end portion by a staying means while the web winding body is formed around the winding core. A drying step of allowing the liquid to stay in the web winding body with the core for a time period such that the core can be removed and dried naturally to dry the liquid attached to the starting end of the web, and the dried roll. A core removing process for removing the core from the cored web winding body, Method for producing a toilet roll paper and performing. 2. An outer diameter substantially the same as the inner diameter of the center hole of the toilet roll paper and having the same axial length as the product of the toilet roll paper, and in contact with water. Also, using a winding core formed of a tubular body of a material that does not deteriorate, a web winding start end portion of a web having the same width as the length of the winding core is provided around the winding core, and a predetermined web winding start end portion is provided. A web winding step of forming a web winding body by sequentially winding a web having a product length on the outer side of the small length range while being sprayed with a liquid for adhering a web, and around the core. To the extent that the liquid attached to the web winding start end can be removed from the core-wound web winding body by the staying means while the web winding body is formed on the web winding body. Allow it to stay for a period of time that allows it to dry naturally, A drying step of drying the was liquid, cored step of removing disconnect the winding core from the winding core with the web wound body of the dried, capital method for producing a toilet roll paper and performing. 3. The method for producing a roll paper for toilet according to claim 1 or 2, wherein the core is a tubular body having air permeability in the inner and outer directions.