Patent Description:
Toilet paper roll with long toilet paper rolled is used in bathrooms integrated with toilets, and is often used in kitchens and living rooms as a substitute for versatile pop-up tissue paper products and kitchen paper rolls.

On the other hand, a plurality of toilet paper rolls is collectively wrapped with an exterior film such that a plurality of toilet paper rolls can be stored after purchase.

On the other hand, many of toilet paper roll packages are film-wrapped with multiple toilet paper rolls as they are, but such toilet paper rolls film-wrapped as they are have a problem that unused toilet paper rolls remaining after unsealing a package may be exposed to water from a shower or the like when stored in a bathroom integrated with a toilet, and also that it is large for storing in a kitchen or a living room, and it does not look good to take out and store each toilet paper.

Therefore, in the package that put together a plurality of toilet paper rolls, toilet paper rolls are individually wrapped and then collectively wrapped for commercialization so as to be easily used in a bathroom, kitchen, living room, and the like.

However, these products have problems that, since toilet paper rolls are double-wrapped, it takes time to unseal and is difficult to take out.

Therefore, a main object of the present invention is to make it easy to unseal a toilet paper roll package in which individually wrapped toilet paper rolls are further collectively wrapped, and to take out individual toilet paper rolls.

Means for solving the above problems are as follows.

In the first means,
a package according to claim <NUM> is provided.

In the second means,
a package according to claim <NUM> is provided.

The present invention described above provides a toilet paper roll package in which individually wrapped toilet paper rolls are further collectively wrapped and which is easily unsealed and makes it easy to take out individual toilet paper rolls.

Next, the embodiments of a package of the present invention will be described in detail with reference to <FIG>.

A toilet paper roll package <NUM> according to the present embodiment is a toilet paper roll package (hereinafter, simply referred to as a package) that is gusseted with an exterior film <NUM>.

The package <NUM> can be manufactured, for example, by opening a lower opening of gusset packaging in which an upper sealing portion <NUM> is formed by sealing an upper portion in a state where the side portions 2E and 2E of a barrel shaped exterior film are folded inward and flattened, inserting a toilet paper roll <NUM>, and then sealing a lower portion to form a lower sealing portion <NUM> that seals the opening.

Further, the package <NUM> has gusset portions <NUM> and <NUM> formed by opening the side portions 2E and 2E of the exterior film folded in a flat state and has surfaces <NUM>, <NUM>, <NUM>, and <NUM> connected to the gusset portions in a state where the toilet paper roll <NUM> is packed. That is, among the surfaces connected to the gusset portions <NUM>, the surface connected to the upper sealing portion <NUM> is the top surface <NUM>, and the surface connected to the lower sealing portion <NUM> is the bottom surface <NUM>. Further, the second surface connected to the top surface <NUM> and the bottom surface <NUM> and each of the gusset portions <NUM> and <NUM> is the front surface <NUM> and the back surface <NUM>. However, the front surface <NUM> and the back surface <NUM> are relative, and it is not limited which surface is the front surface.

The upper sealing portion <NUM> and the lower sealing portion <NUM> are formed by a known sealing technique such as heat sealing or ultrasonic welding. Preferably, those are formed by heat sealing.

In the upper sealing portion <NUM> of the package <NUM>, it is desirable to form a known finger hole <NUM> in the upper sealing portion <NUM> so that the package <NUM> can be easily carried.

In this package <NUM>, characteristically, the toilet paper rolls <NUM> are arranged in two rows with the circumferential surfaces abutting between the upper sealing portion <NUM> and the lower sealing portion <NUM> in gusset packaging, and the upper sealing portion <NUM> and the lower sealing portion <NUM> are located at a position facing the circumferential surfaces <NUM> of the toilet paper rolls <NUM>. That is, the package <NUM> has two rows of the toilet paper rolls <NUM> from the upper sealing portion <NUM> toward the lower sealing portion <NUM>, and the end surface <NUM> of the toilet paper roll <NUM> is arranged so as to face the front surface <NUM> and the back surface <NUM> of the package <NUM>. The preferred number of toilet paper rolls to be wrapped in the package <NUM> is four rolls × two rows for a total of eight rolls, five rolls × two rows for a total of ten rolls, and six rolls × two rows for a total of twelve rolls. In particular, it is suitable for the case of five rolls × two rows for a total of ten rolls as in the illustrated example.

Many of the gusseted toilet paper roll packages (hereinafter referred to as conventional package) are arranged in a plurality of vertical stacks such that the end surfaces of the toilet paper rolls face the upper sealing portions and lower sealing portions of the included toilet paper rolls. This is because, particularly in products where toilet paper rolls are packaged as they are, after unsealing the vicinity of the upper sealing portion to take out a part, an opening is easily closed while remaining toilet paper rolls are left in the exterior film to store in a sanitary manner. However, in the case of the conventional package having this arrangement, it is necessary to sequentially take out the upper toilet paper roll in order to take out the lowermost toilet paper roll. The package <NUM> is a double package in which the toilet paper rolls <NUM> as an inclusion are individually wrapped with a resin film <NUM>, such that after unsealing the exterior film <NUM>, even if all of the toilet paper rolls <NUM> are taken out of the exterior film <NUM>, they can be stored in a sanitary manner. It is desirable that all of them be taken out of the exterior film <NUM> because they can be used quickly. Obviously a part may be left in the exterior film <NUM>. However, also in this case, since the toilet paper roll <NUM> as an inclusion is individually wrapped with the resin film <NUM>, it is not necessary to close the opening. Therefore, in the package <NUM> which is a double package in which the toilet paper rolls <NUM> as an inclusion are individually wrapped with the resin film <NUM>, it is desirable to make the take-out property from the exterior film <NUM> more excellent. In this case, the end surfaces <NUM> of the toilet paper roll <NUM> are arranged in the up-down direction, and are arranged such that the end surfaces <NUM> of the toilet paper roll <NUM> faces the front surface <NUM> and the back surface <NUM> of the package <NUM> rather than the arrangement of the conventional package arranged in a plurality of vertical stacks. It is desirable to adopt the arrangement as in the package <NUM> that makes possible to easily reach all the toilet paper rolls <NUM> when used by the user, by entirely flattening the surface formed by the end surfaces <NUM> of the toilet paper roll <NUM> by arranging in this way.

In the case where, in the package <NUM>, the toilet paper rolls <NUM> are arranged in two rows with the circumferential surfaces abutting between the upper sealing portion <NUM> and the lower sealing portion <NUM> as in the present embodiment, and the upper sealing portion <NUM> and the lower sealing portion <NUM> are located at a position facing the circumferential surfaces <NUM> of the toilet paper rolls <NUM>, the toilet paper roll packages may be multi-stacked during transportation or at stores, and also there is a case where the circumferential surface side of the toilet paper roll 30A closest to the lower sealing portion is placed on the bottom. In such a case, in order to make the toilet paper roll <NUM> hard to be crushed, it is desirable that the enclosed toilet paper rolls <NUM> be slightly hard-wound and have the following shape.

That is, desirably the toilet paper roll <NUM> has a basis weight per sheet of <NUM> to <NUM>/m<NUM>, and single-layer or multi-layer toilet paper with a single sheet thickness of <NUM> to <NUM> is wound around a core having a diameter L1 of <NUM> to <NUM> and a length of <NUM> to <NUM> such that the toilet paper roll diameter L2 becomes <NUM> to <NUM>. Such rolled toilet paper roll <NUM> has sufficiently high strength against crushing both in the direction between the end surfaces and in the circumferential direction when being individually packaged, and it is particularly suitable in the arrangement form of the toilet paper rolls in the package <NUM>. Further, the shape of the toilet paper roll <NUM> desirably has a width L3 of <NUM> to <NUM>. The width L3 of the toilet paper roll <NUM> is shorter than the width of a general toilet paper roll. By making the toilet paper roll shape a little narrower, in the above arrangement, the stability is improved when the package <NUM> is placed such that the front surface <NUM> and the back surface <NUM> of the package <NUM> are located in the up-down direction, it becomes easy to take out from the opening by the unsealing portion <NUM> described later.

It is desirable that the exterior film <NUM> have a thickness of <NUM> to <NUM>. The thickness of the exterior film <NUM> is larger than that of the film used in many conventional packages in which a plurality of vertically stacked toilet paper rolls are included such that the end surfaces of the toilet paper roll face the upper and lower sealing portions. By making the exterior film <NUM> thicker, the strength of the whole package can be increased, and the toilet paper roll <NUM> is less likely to be crushed. Further, particularly when the finger hole <NUM> is formed in the upper sealing portion <NUM>, in the case of the arrangement of the toilet paper rolls <NUM> in the package <NUM>, when the package <NUM> is lifted by using the finger hole <NUM> such that the upper sealing portion <NUM> is located above, two rows of the toilet paper rolls <NUM> formed by abutting the circumferential surfaces are continuous in the up-down direction. In this case, if the exterior film <NUM> is thin and easily stretched, and if the number of the toilet paper rolls <NUM> exceeds approximately six, and the number of the toilet paper rolls <NUM> in each row exceeds three, the alignment in the exterior film <NUM> is likely to be broken. The above-mentioned thickness of the exterior film <NUM> can secure enough strength to maintain the arrangement state even when five or more sheets of toilet paper are arranged in each row. The melting point of the exterior film <NUM> is desirably <NUM> or less for forming the respective sealing portions. Specifically, a polypropylene resin film and a polyethylene resin film are desirable in terms of cost and unsealability. In addition, the lower the melting point of the packaging film, the lower the temperature at which the heat-sealing treatment can be performed. Therefore, it is preferable in forming the upper sealing portion <NUM> and the lower sealing portion <NUM>. However, if the melting point is excessively low, there is a high possibility that the film is damaged or holes are formed due to friction or the like. Therefore, the practical lower limit is <NUM>. Examples of the polyethylene resin film include a linear low density polyethylene film (LLDPE), a low density polyethylene film (LDPE), and a medium density polyethylene film (MDPE). Among them, in the present invention, a linear low-density polyethylene film layer (LLDPE) having a density of about <NUM> to <NUM>/cm<NUM> and a melting point of <NUM> to <NUM> is particularly suitable from the viewpoint of heat sealability and cost. Further, when an odorous toilet paper roll such as a scented toilet paper roll is packaged as the toilet paper roll <NUM>, an ethylene vinyl alcohol copolymer resin film or a polyethylene terephthalate resin film may be used. Furthermore, a multilayer resin film may be used in which a polyethylene resin film or a polypropylene resin film is laminated on one surface or both surfaces of ethylene vinyl alcohol copolymer resin film, or polyethylene terephthalate resin film to enhance the heat-sealing property.

The package <NUM> has a characteristic unsealing portion <NUM> formed by perforations on the surface of the exterior film <NUM> facing the end surfaces <NUM> of the toilet paper roll <NUM> and a range from this surface to a surface to the upper sealing portion, that is a range including at least one surface of the front surface <NUM> and the back surface <NUM> to a top surface extending to the surface. The enclosed toilet paper rolls <NUM> can be easily taken out from the opening of the exterior film <NUM> formed by unsealing the unsealing portion <NUM>.

This unsealing portion <NUM> has an unsealing start portion <NUM> with U-shaped or substantially V-shaped perforations arranged such that the upper sealing side is the top side and a belt-shaped outlet forming portion <NUM> that is wider than the unsealing start portion <NUM> by a pair of perforations 62a and 62a that are continuous with both ends 61a of the unsealing start portion <NUM> and that extend toward the lower sealing portion <NUM>. Note that it is desirable that the outlet forming portions <NUM> be configured so as to gradually expand from the end 61a of the unsealing start portion.

The cut tie ratio (cut : tie) of the perforations 62a is <NUM>:<NUM> to <NUM>:<NUM>. The length of the cut portion is preferably <NUM> to <NUM>.

The unsealing start portion <NUM> is a portion for facilitating the unsealing of the unsealing portion <NUM> by pushing in and inserting a finger. In particular, the unsealing start portion <NUM> of the package <NUM> works well when the exterior film <NUM> has the thickness as described above. The width L4 and the length L5 of the unsealing start portion <NUM> need only be large enough to allow a finger to be inserted. However, if the width L4 and the length L5 are excessively wide, it becomes difficult to unseal easily by pushing. The specific width L4 is desirably <NUM> to <NUM>. Further, it is desirable that the length L5 be <NUM> to <NUM> in the arrangement direction of the toilet paper rolls.

Further, the unsealing start portion <NUM> has an unsealing start auxiliary perforation 61b extending from the U-shaped or substantially V-shaped vertex to the upper sealing side. When this range surrounded by the unsealing start auxiliary perforation 61b in the U-shape or the substantially V-shape is pushed by a finger, the perforation is smoothly opened. In particular, the presence of the unsealing start auxiliary perforation 61b makes it possible to smoothly unseal even the thick exterior film <NUM>. The length of the unsealing start auxiliary perforation 61b is desirably <NUM> to <NUM>. If the length is less than <NUM> or more than <NUM>, the effect of weakening the pushing force is reduced.

The unsealing start portion <NUM> is located at the central portion of the two toilet paper roll rows, and in particular, is closer to the upper sealing portion than the adjacent position P1 of a pair of the toilet paper rolls 30B and 30B closest to the upper sealing portion. Preferably, a part thereof is located in a range from a position adjacent to the toilet paper roll up to <NUM> times the diameter L2 of each of the pair of toilet paper rolls to <NUM> times the diameter L2 of each toilet paper roll + <NUM> times the width L3 of each toilet paper roll. In this position, the presence of the toilet paper roll <NUM> does not make it difficult to push the unsealing start portion <NUM> with a finger. In addition, in particular, it is desirable that the vertex position of the above U or V shape be located at a position within the width L3 of the toilet paper roll from the position P2 on the uppermost sealing portion side of a pair of the toilet paper rolls 30B and 30B closest to the upper sealing portion. In this position, when the upper sealing portion <NUM> is held by hand and pulled toward the upper sealing portion <NUM> side, since the inside of the exterior film <NUM> of the unsealing start portion <NUM> is a space, it can be easily pushed with a finger.

Each perforation 62a constituting the outlet forming portion <NUM> is located on the toilet paper roll group in each row arranged in two rows. The width L6 of the outlet forming portion <NUM> is <NUM> to <NUM> times, preferably <NUM> to <NUM> times the diameter L2 of the toilet paper roll. When the width L6 of the outlet forming portion <NUM> is <NUM> to <NUM> times the diameter L2 of the toilet paper roll, the take-out property becomes particularly improved when the diameter of the toilet paper roll <NUM> is small. The length L7 of the outlet forming portion <NUM> is set to the length to at least a paper tube of a pair of the toilet paper rolls 30C and 30C, which is close to the upper sealing portion next to a pair of the toilet paper rolls 30B and 30B (second closest to the upper sealing portion). With this length, the toilet paper roll <NUM> can be easily taken out. According to the invention the length is <NUM> to <NUM> times the diameter L2 of the toilet paper roll.

Conversely, if the length L7 of the outlet forming portion <NUM> is excessively long and extends from the upper sealing side of the package <NUM> toward the lower sealing side to the central position of the package <NUM>, in the arrangement of the toilet paper roll <NUM> in the package <NUM>, the risk of unintended tearing of the perforations increases during transportation or at the time of carrying with the finger hole.

Here, the toilet paper roll <NUM> according to the package <NUM> is individually wrapped with the resin film <NUM>, and the individual wrapping mode of the toilet paper roll with the resin film <NUM> may be a general individual wrapping of toilet paper rolls, that is a wrapping mode in which the resin film is deformed and adhered in the shape of a toilet paper roll. Since individually wrapped toilet paper rolls 30Y and unwrapped toilet paper rolls 30X differ from each other in only the presence or absence of a space in the core, there is substantially no difference in outer dimensions. Note that, individual wrapping may be merely wrapping the toilet paper roll with the resin film <NUM>, but it is desirable that the toilet paper roll be individually packaged so as to be sealed by an adhesive or fusion, such as a caramel package as shown in <FIG>.

Examples of the resin film <NUM> for individual packaging include a polypropylene film and a polyethylene film. Further, the thickness is desirably <NUM> to <NUM>.

Next, a second embodiment will be described with reference to <FIG>. The second embodiment differs from the first embodiment in the shape of an unsealing start portion and the shape of an unsealing start auxiliary perforation. Others are the same as in the first embodiment.

An unsealing start portion <NUM> in a package <NUM> of the present embodiment has a trapezoidal top shape in which perforations are arranged such that the upper sealing side is located on the top side. Each upper end portion 61c at the trapezoidal top may be chamfered. The length L8 of an upper bottom portion in the unsealing start portion <NUM> is desirably <NUM> to <NUM>.

Unsealing start auxiliary perforations 61b in the present embodiment is a pair of two perforations extending from the upper end portions 61c of the trapezoidal top to the upper sealing side. The length is the same as in the first embodiment. It is desirable that the two unsealing auxiliary perforations 61b and 61b be arranged such that they are gradually separated from each other, in particular, as they approach the upper sealing portion.

Claim 1:
A toilet paper roll package (<NUM>), in which a plurality of toilet paper rolls (<NUM>) individually wrapped with a resin film (<NUM>) is gusseted with an exterior film (<NUM>),
each toilet paper roll having a circumferential surface (<NUM>) and two end surfaces (<NUM>),
wherein the toilet paper rolls are arranged in two rows with circumferential surfaces (<NUM>) abutting between an upper sealing portion (<NUM>) and a lower sealing portion (<NUM>) in gusset packaging, the upper sealing portion and the lower sealing portion are located at a position facing the circumferential surfaces of the toilet paper rolls,
in a range of a surface of the exterior film facing an end surface (<NUM>) of the toilet paper roll and a surface extending from this surface to the upper sealing portion, an unsealing portion (<NUM>) formed by a perforation is formed,
this unsealing portion includes an unsealing start portion (<NUM>) with U-shaped or substantially V-shaped perforations arranged such that an upper sealing portion side is a top side, and a belt-shaped outlet forming portion (<NUM>) that is wider than the unsealing start portion and is formed by a pair of perforations that extend from each of both ends of the unsealing start portion toward the lower sealing portion,
the unsealing start portion is closer to the upper sealing portion than a position (P1) adjacent to a pair of toilet paper rolls (30B) located closest to the upper sealing portion, and has an unsealing start auxiliary perforation extending from the U-shaped or substantially V-shaped top to the upper sealing side, and
wherein each perforation (62a) forming the outlet forming portion is located on a toilet paper roll group of each row arranged in two rows, and the outlet forming portion has a width (L6) of <NUM> to <NUM> times the toilet paper roll diameter (L2) and a length (L7) which is <NUM> to <NUM> times the toilet paper roll diameter (L2) and less than the distance from the upper sealing side to the central position of the toilet paper roll package in the direction of the lower sealing side.