JP2001017344A - Tail sealing structure of roll paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tail seal structure of roll paper designed to make the appearance of the tail part 2 good, to facilitate the searching out of the tail part and to allow the easy and sure peeling of the tail part at the time of start of using the roll paper. SOLUTION: A web of the tail part 2 of the roll paper 1 is turned back to an inner side and the roll-facing surface of an inner folded piece 3 is adhered to a roll outside surface la, by which the web of the tail part 2 is made double and the tail part is thereby provided with a shape retaining property. Even if the web of the inner folding piece 3 is held strongly adhered to the roll outside surface 1a, a longitudinal tear hardly occurs on the tail part 2 side at the time of peeling of an adhesive part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll paper tail seal structure used for toilets, towels, kitchens, and the like.

[0002]

2. Description of the Related Art A typical example of a conventional roll paper of this type is a toilet roll paper 1 shown in FIG. 8, for example. The entire surface of the roll is glued to the outer surface 1a in a streak shape (adhesion portion 5). In this case, the tail portion 2 is glued (adhered portion 5) to the outer surface 1a of the roll while being cut off during the manufacture of the roll paper. Then, in order to use the roll paper 1, the edge of the tail portion 2 is pinched, the adhesive portion 5 is peeled off, and the web W is unwound sequentially. In addition, the bonding part 5 of the tail part 2
Is a small length (for example, 2 to 10) from the web tip edge Wb.
(approximately mm) away from each other, so that when the tail portion 2 is peeled off, the front end edge Wb of the web is easily pinched.

[0003]

Incidentally, the web W of the toilet roll paper 1 is very thin and has a very low strength because of the need for water dissolving properties. Therefore, in the conventional toilet roll paper 1 shown in FIG. 8, when the adhesive portion 5 of the tail portion 2 is peeled off, the tail portion 2 cannot be completely peeled over the entire width unless it is carefully performed. That is, when peeling off the adhesive portion 5 of the tail portion 2, it is necessary to completely peel the adhesive portion 5 over the entire length (roll width direction), but the web W is very thin (strength is low), In addition, the web tip edge Wb often tears in the web length direction due to the peel resistance of the bonding portion. And, in this way, the web leading edge W
When b is torn, it is necessary to pick up the unpeeled web tip edge Wb and peel off the adhesive portion 5 again. In particular, when the bonding strength of the bonding portion 5 is strong, the web leading edge Wb may tear at any number of places, and each time the unpeeled web leading edge Wb
It is necessary to perform the peeling operation by changing the position. Therefore, in the conventional toilet roll paper, it takes a great deal of time and effort to completely remove the tail portion 2 at present.

When the tail portion 2 is peeled off and the web W is pulled out with a part of the web tip edge Wb remaining adhered, a longitudinal tearing phenomenon occurs in the web W, and the web tip edge Wb is removed. Part where Wb is adhered (width of code Wa)
Is left on the outer surface 1a of the roll, and it takes time and effort to process the remaining portion of the web Wa, and there is a problem that paper is wasted.

[0005] Further, in the production of this type of roll paper, when the product roll is separated from the succeeding belt-like web, it is often performed to tear the product roll at a perforated portion.
In the case of cutting off at the perforation like this,
The small piece Wc may protrude from the web leading edge Wb, or a defective portion Wd may be formed. In that case, the leading edge Wb of the web becomes irregular, the appearance is deteriorated, and the commercial value is reduced.

In the conventional toilet roll paper tail seal configuration, the tail portion 2 is adhered to the roll outer surface 1 because the tail portion 2 is adhered with the cut edge.
a, it becomes difficult to identify the web tip edge Wb, especially when the web tip edge Wb is completely glued.

[0007] In view of the above-mentioned problems of the conventional roll paper, the present invention makes it possible to improve the appearance of the tail portion, facilitate the search for the tail portion, and prevent the tail portion from peeling off at the start of use of the roll paper. It is an object of the present invention to propose a roll paper tail seal structure that can be easily and reliably performed.

[0008]

The present invention has the following structure as means for solving the above-mentioned problems. still,
The present invention is directed to a tail seal structure of roll paper used for toilets, towels, and kitchens, for example.

In the tail seal structure according to the first aspect of the present invention, the web of the tail portion of the roll paper is folded inward, and the roll-facing surface of the inner folded piece is adhered to the outer surface of the roll.

When the inner folded piece is formed on the tail portion as in the tail seal structure of the first aspect of the present invention, the tail portion is doubled by the inner folded piece and the outer surface material outside the inner folded piece. Also, since the inner fold of the tail portion has its inner surface (the surface facing the roll) adhered to the outer surface of the roll, the inner fold itself adheres to the outer surface of the roll with considerable strength. By the way, the glue for adhering the tail part partially penetrates the inner fold piece to adhere the inner fold piece to the outer surface material on the outer side. Therefore, the adhesive strength between the inner folded piece and the outer surface material outside the inner folded piece is weak.

According to the tail seal structure of the first aspect, the following functional characteristics are generated by the above configuration. First, since the tail portion is folded, the end edge of the tail portion becomes straight, and the folded portion is easily noticeable. Further, since the web of the tail portion is doubled, the tail portion can have shape retention, and the tail portion can be easily gripped when the tail portion is peeled off. Furthermore, if the inner fold is strongly adhered to the outer surface of the roll, when the tail portion is peeled from the outer surface of the roll, the web of the bonded portion may not be peeled off properly and one of the webs may break. However, even in this case, since the adhesive strength between the outer surface material of the tail portion and the inner folded piece is small, the outer surface material is less likely to be broken, and the tail portion can be pulled out as a single piece over the entire width. Therefore, the vertical tearing of the web is less likely to occur when the tail is bonded. In addition, if the strength of the bonding part is strong, when the tail part is peeled off, a part of one web of the bonding part may be broken and remain bonded to the other side, but the web on the inward folded piece side may be broken. In the case where the broken pieces are adhered to the outer surface of the roll, the broken pieces are removed together with the unwound web by unwinding the web by one rotation of the roll.

When the web on the outer surface of the roll at the bonding portion is broken when the tail portion is peeled off and remains adhered to the inner fold side, the web is unwound when the web is unwound. There is a risk that a longitudinal tearing phenomenon may occur on the roll outer surface side web of the bonded portion, but it is probable that whether the broken side web at the bonded portion is an inward folded piece or a roll outer surface has a probability of 1/2. It is conceivable that the probability of longitudinal tearing is reduced as compared with the conventional roll paper tail seal structure.

According to a second aspect of the present invention, in the tail seal structure of the first aspect, the adhesive portion of the tail portion is formed at a position retracted by a predetermined small length from the tip of the tail portion. I have.

In this manner, the vicinity of the folded portion (the end of the tail portion) of the inwardly folded piece of the tail portion is in a non-adhered state with respect to the outer surface of the roll, and the tail portion is more easily gripped when the bonded portion is peeled off.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. FIGS. 1 to 5 show a first embodiment, FIG. 6 shows a second embodiment, and FIG. Shows a third embodiment. In each of the embodiments, the toilet roll paper is used as the roll paper 1, but in the present application, a towel paper, kitchen paper, or the like can be used as the roll paper.

The roll paper 1 of the first embodiment shown in FIGS. 1 and 2 is for a toilet and is formed by winding a water-disintegrable thin web by a predetermined length.
Therefore, the web of the roll paper 1 has a relatively low breaking strength.

The tail portion 2 of the roll paper 1 is folded inward by a predetermined small length over the entire length of the roll width, and the roll-facing surface of the inner folded piece 3 is bonded to the roll outer surface 1a with a paste 5. Let me. In the description of the embodiment of the present application, reference numeral 5 may be referred to as a glue or an adhesive portion, but the same portion is shown in each drawing.

In the first embodiment shown in FIGS. 1 and 2, the inner folded piece 3 is folded inward at an equal width of, for example, about 10 to 20 mm. In this tail seal structure, the inner surface (the roll-facing surface) of the inner folded piece 3 is adhered to the outer surface 1a of the roll with the glue 5. In the form of a streak having a length of
In another embodiment, the adhesive portion 5 made of the adhesive may be adhered in a dot-like manner at predetermined small intervals in the roll width direction. The bonding portion 5 is provided at a position closer to the tip of the inner fold piece 3 in the inner fold piece 3. Therefore, the end of the inner fold piece 3 in the tail section 2 from the bonding portion 5 is closer to the roll outer surface 1 a. It is a non-adhesive part.

The tail seal structure of the roll paper 1 of the first embodiment is processed, for example, as shown in FIGS. First, as shown in FIG. 3A, the roll paper 1 is placed on the two winding rolls 12 with the tail portion 2 unwound by a predetermined length. then,
The unwound tail portion 2 is set on the table 11.
Then, in this state, the front end of the tail portion 2 is folded back toward the upper surface by a predetermined small length to form the inward folded piece 3 '. Next, as shown in FIG. 3 (B), the gluing cylinder 13 is extended to bring the gluing material 14 into contact with the upper surface of the inner folded piece 3 as indicated by reference numeral 14 '. Glue is adhered to. Then, as shown in FIG.
The tail part 2 is wound around the roll outer surface 1a by rotating the rollers 2 and 12 in the direction of the arrow. Then, when the inner folded piece 3 is wound, the glue adhered to the upper surface of the inner folded piece 3 comes into contact with the roll outer surface 1a, and the inner surface of the inner folded piece 3 and the roll outer surface 1a are brought into contact with each other. It is adhered with the paste. In addition, this paste 5
Is used so that the tail portion 2 is not inadvertently peeled off from the outer surface 1a of the roll. At this time, the glue 5 penetrates the web of the inner fold 3 as shown in FIG. 2 and the inner fold 3 and the outer surface material 4 (FIG. 1) outside the inner fold.
And FIG. 2) are adhered to each other.
The amount of the glue that has permeated through is small, and therefore, the adhesive force between the inner folded piece 3 and the outer surface material 4 on the outside thereof is weak.

In the tail seal structure according to the first embodiment, the tail portion 2 has the inner folded piece 3 and the outer surface material 4 on the outside thereof.
Since the tail portion 2 is doubled, the tail portion 2 has shape retention. Further, since the bonding portion 5 is provided at a position closer to the tip of the inner fold piece 3 in the inner fold piece 3, the tail portion 2
Is in a non-adhesive state with respect to the roll outer surface 1a.

In order to use the roll paper 1 of the first embodiment, the tail portion 2 is peeled off and the web is unwound. At this time, the tail edge of the tail portion 2 is folded in two. The tail portion 2 can be easily found from the outer surface 1a of the roll, and the tip portion of the tail portion 2 is double and is not adhered to the outer surface 1a of the roll, so that the tail portion 2 can be easily picked. .

As shown in FIGS. 4 and 5, when the tail portion 2 is strongly adhered to the outer surface 1a of the roll when the tail portion 2 is peeled off from the outer surface 1a of the roll, the adhesive portion 5 is removed. In some cases, one of the webs may be broken without the webs being peeled off from each other, but since the adhesive force between the outer surface material 4 of the tail portion 3 and the inner folded piece 3 is small, the outer surface material 4 is less likely to be torn. . Therefore, the outer surface member 4 of the tail portion 3 can be pulled out as a single sheet over the entire width, thereby preventing the vertical tearing of the web when the web is unwound.

As shown in FIG. 4 and FIG.
May not be peeled off from each other, for example, a part of the web of the inner folded piece 3 may be broken, and the broken piece 3a may remain on the roll outer surface 1a side. In this case, a chain line is shown in FIG. As described above, when the web is unwound by one rotation of the roll (the tail portion is pulled out to the position indicated by reference numeral 2 '), the broken pieces are removed together with the unwound web as indicated by reference numeral 3a'. When the web on the side of the inner fold 3 is broken, a notch 3b is formed in the inner fold 3; There is no effect on the unraveling operation.

When the tail portion 3 is peeled off, the web on the side of the outer surface 1a of the roll in the bonding portion 5 may be broken and bonded to the side of the inward folded piece 3, contrary to the above. In this case, when the web is unwound, there is a possibility that a vertical tearing phenomenon may occur in the web on the side of the roll outer surface 1a which is bonded to the inner folded piece 3. Incidentally, it is considered that the probability that the web on the fracture side of the bonding portion 5 is generated on the inner folded piece 3 or on the outer surface 1a of the roll has a probability of 1/2, which is smaller than that of the conventional roll paper tail seal structure. As a result, the probability of occurrence of vertical tear is reduced.

In the tail seal structure according to the second embodiment shown in FIG. 6, the inner folded piece 3 is formed in a triangular shape with each half of the web width inward at both ends of the tail portion 2 (2 '). It is formed by folding. And each inner folded piece 3,
3 (3 ', 3'), glues 5, 5 (5 ', 5') are attached to the roll facing surface near the center in the web length direction toward the web width direction, respectively. At 5, the inner surfaces of the inner folded pieces 3 and 3 are adhered to the roll outer surface 1a.

In the tail seal structure of the third embodiment shown in FIG. 7, the inner folded piece 3 extends over the entire width of the web with one corner of the tip of the tail portion 2 (2 ') facing inward. It is formed by folding it into a triangular shape. And the inner folded piece 3
A glue 5 (5 ′) is adhered in the web width direction near the center in the web length direction on the roll-facing surface side of (3 ′), and the glue 5 is used to remove the inner surface of each inner folded piece 3 from the roll. Surface 1a
It is adhered to.

In each of the tail seal structures of the second embodiment shown in FIG. 6 and the third embodiment shown in FIG. 7, the tip of the tail portion 2 becomes clear, so that the tail portion 2 can be easily found when unwinding the tail portion. In addition, the tail portion 2 has a non-adhesive portion having a considerable length ahead of the adhesive portion 5, so that when the tail portion 2 is peeled off, the tail portion 2 is easily picked up and the adhesive portion 5 is removed. , The adhesive portion 5 of the tail portion 2 can be easily peeled off.

[0028]

The tail seal structure effects present invention of claim 1 of the claims 1 invention, according to the present invention, along with folding the web tail portion 2 of the roll paper 1 to the inside, the roll facing surface of the folded piece 3 that Roll outer surface 1a
(Adhesion part 5). Therefore, this claim 1
The tail seal structure of (1) has the following effects. (1) Since the web of the tail portion 2 is doubled, the tail portion 2 has a shape-retaining property, and the tail portion 2 is easily gripped when the adhesive portion 5 of the tail portion 2 is peeled off. (2) Since the inner folded piece 3 is folded back, the edge (folding line) of the tail portion 2 becomes clean and the appearance is improved. (3) The inner fold 3 and the outer surface 1a of the roll may be strongly adhered to each other, but the adhesive force between the inner fold 3 and the outer surface material 4 outside the fold 3 is weak. Even if the inner fold 3 is strongly adhered to the outer surface 1a of the roll by the bonding portion 5 and the inner fold 3 is broken, the outer surface material 4 of the tail portion 2 remains in a continuous state. It can be unwound, and the vertical tearing phenomenon is less likely to occur on the web. (4) When the tail part 2 is peeled off from the outer surface 1a of the roll, if the web of the inner folded piece 3 is broken,
When the web is unwound by one rotation of the roll, the broken pieces 3a are removed together with the unwound web even when the web remains on the roll outer surface 1a side, so that the broken pieces 3a do not become a particular obstacle. According to a second aspect of the present invention, in the tail seal structure of the first aspect, the bonding portion 5 of the tail portion 2 is formed at a position retracted from the tip of the tail portion 2 by a predetermined small length. As a result, a non-adhesive portion is formed on the tip side of the tail portion 2. Therefore, in the tail seal structure of the second aspect,
When the tail portion 2 is peeled off, it becomes easier to put a finger on the tip of the tail portion.

[Brief description of the drawings]

FIG. 1 is a perspective view of a roll paper having a tail seal structure according to a first embodiment of the present application.

FIG. 2 is an enlarged sectional view taken along the line II-II of FIG.

FIG. 3 is an explanatory view showing a manufacturing process of the roll paper of FIG.

FIG. 4 is an explanatory view when the tail portion of the roll paper of FIG. 1 is peeled off.

FIG. 5 is a sectional view corresponding to FIG. 2 of FIG. 4;

FIG. 6 is a perspective view of a roll paper provided with a tail seal structure according to a second embodiment of the present application.

FIG. 7 is a perspective view of a roll paper provided with a tail seal structure according to a third embodiment of the present application.

FIG. 8 is a perspective view of a conventional roll paper.

[Explanation of symbols]

1 is a roll paper, 1a is a roll outer surface, 2 is a tail portion, 3 is an inner folded piece, 4 is an outer surface material, and 5 is an adhesive (adhesive portion).

Claims (2)

[Claims] 1. A tail portion (2) of a roll paper (1).
Characterized in that the web is folded inside and the roll-facing surface of the inner folded piece (3) is adhered (5) to the outer surface (1a) of the roll. 2. The method according to claim 1, wherein the bonding portion (5) of the tail portion (2) is formed at a position retracted from the tip of the tail portion (2) by a predetermined small length. Tail seal structure of roll paper.