JP2017052563A - Toilet roll package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent fragrant material from volatilizing to the outside from a package of toilet rolls with fragrance.SOLUTION: A toilet roll package packaging toilet rolls 20 with fragrance is made of a resin film 10 which includes the outermost resin layer having a melting point of 150°C or less, an oxygen permeability of 40 cc/mday or less, and tensile strength of 40 Mpa or less.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a toilet roll package.

Toilet rolls that are rolled up with toilet paper into a tubular shape are packaged with a thin polyethylene film or polypropylene film having a thickness of about 20 to 50 μm to make a product.
This polyethylene film and polypropylene film are flexible in terms of flexibility to fit a toilet roll having a soft cylindrical shape, and ease of heat-sealing treatment performed when forming or sealing a bag. Very suitable for packaging.

By the way, in the toilet roll, what gave the fragrance | flavor to the toilet paper and paper tube which are structural members, and was scented is proposed. Conventionally, this scented toilet roll is also packaged with a thin polyethylene film or polypropylene film.
However, since the toilet roll has a low density and a cylindrical shape, there are many portions that come into contact with air in the package, and the imparted fragrance is very volatile in the package.

On the other hand, the polyethylene film and the polypropylene film are not necessarily high in terms of gas barrier properties, and when using a highly volatile fragrance, when pre-shipment storage after commercialization, during warehouse storage after shipment, There is a risk of fragrance leaking outside during store display.
For this reason, in the toilet roll, the fragrance | flavor to be used is restricted to the thing with low volatility, and the increase in the variation of "fragrance" and the product discrimination by it are difficult.

Patent 4627137 JP-A-11-197054 JP 2009-280232 A

  Then, the main subject of this invention is providing the toilet roll package which can be manufactured and handled without changing with the conventional toilet roll package, and can increase the variation of "fragrance".

The present invention that has solved the above problems is a toilet roll package in which a toilet roll is packaged with a resin film,
The toilet roll is a scented toilet roll containing a fragrance,
The resin film is a laminated film having two or more resin layers, the melting point of the outer resin layer is 150 ° C. or less, the oxygen permeability is 40 cc / m ³ · day or less, and the tensile strength is 40 Mpa. A toilet roll package characterized by the following.

Since the resin film according to the present invention has an outermost resin layer having a melting point of 150 ° C. or lower and an oxygen permeability of 40 cc / m ³ · day or less, it is excellent in heat fusion processability and gas barrier properties, and is a conventional toilet roll. It can be produced in the same manner as a package, and it does not permeate the resin film and volatilize outside the fragrance. Moreover, since tensile strength is 60 Mpa or less, it has moderate intensity | strength and can perform similarly to the conventional package body also in opening. In addition, the outer layer as used in the field of this invention means the outermost layer located in each surface of a resin film, and does not mean the layer located in the outer side of a package body.

Further, it is desirable that the resin film has a middle layer of a vinyl chloride copolymer resin layer and an outermost layer of a polyethylene resin layer.
The gas barrier property, the melting point of the outermost layer, and the tensile strength are easily designed, and the cost is low.

In addition, the toilet roll desirably contains a fragrance having a vapor pressure of 50 Pa or higher in an environment of a temperature of 20 ° C. and a humidity of 50% RH.
Since the package according to the present invention has a high gas barrier property of the resin film, it is possible to use a fragrance having a vapor pressure of 50 Pa or higher in an environment of a temperature of 20 ° C. and a humidity of 50% RH, which has been difficult in the past. . Therefore, it is desirable to enclose a toilet roll containing such a fragrance.

  Moreover, it is desirable that the toilet roll package is packaged in a gusset packaging format in which a handle portion having a finger hook hole is provided on the upper portion. A large number of toilet rolls such as 1 to 24 rolls or more can be easily packaged and is convenient to carry. Moreover, it can manufacture similarly to the conventional toilet roll package. Furthermore, since the film has sufficient flexibility, even if the finger is held in the finger-holding hole, the finger does not hurt.

  According to the present invention described above, it is an object to provide a toilet roll package that can be manufactured and handled in the same manner as a conventional toilet roll package and that can increase variations in "scent". .

It is a perspective view of the toilet roll package of the embodiment of the present invention. It is sectional drawing of the resin film which concerns on embodiment of this invention.

Next, an embodiment of the present invention will be described in detail below with reference to FIGS.
The toilet roll package 1 according to the present embodiment is obtained by packaging a plurality of toilet rolls with a resin film 10. In the form shown in FIG. 1, four toilet rolls 20, 20... Are arranged so as to be in contact with each other on the circumferential surface, and a total of 12 toilet roll groups in which three layers are stacked in the end face direction are formed with a resin film 10. It is packaged in a gusset packaging form and is a well-known commercial form of toilet roll. After the toilet roll package 1 is manufactured in a factory, the toilet roll package 1 is normally distributed to consumers through warehouse storage in the factory, shipping and transportation, shipping destination warehouse storage, and store display.

  On the other hand, the toilet roll 20 according to the present embodiment may be either a cored toilet roll in which a belt-shaped toilet paper is wound around a paper tube, or a coreless toilet roll called coreless. Good. The size of the toilet roll is not particularly limited. It is common that the height (width) is 100 to 115 mm, the winding diameter (diameter) is 100 to 120 mm, the core diameter is 10 to 48 mm, and the winding length is 20 to 100 m. Yes.

The toilet paper constituting the toilet roll 20 is not particularly limited in the present embodiment. Examples include those having a ply of 1 to 3 ply, a paper thickness of 100 to 180 μm, and a basis weight per ply of 11.0 to 25.0 g / m ² . In addition, the rice tsubo here is based on the JIS P 8124 (1998) rice tsubo measurement method, and the paper thickness is adjusted under the conditions of JIS P 8111 (1998) after sufficient humidity control. The average value measured five times using a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho).

  On the other hand, as shown in FIG. 2, the resin film 10 according to the present embodiment has three resin layers 11, 12, and 13, and the middle layer 11 and the outer layers 12 and 13 have different resin types. ing. Both the outer layers 12 and 13 have a melting point of 150 ° C. or less, and the both outer layers 12 and 13 have a low melting point, so that the resin film according to the present embodiment can ensure heat fusion processability. A lower melting point is preferable because it can be fused at a lower temperature, but if the melting point is excessively low, the resin film of the package may be scratched or punctured due to friction, etc., so the practical lower limit is 80 ° C. As the outer layers 12 and 13, specifically, a linear low density polyethylene film layer (LLDPE), a low density polyethylene film layer (LDPE), a polyethylene film layer such as a medium density polyethylene film layer (MDPE), a polystyrene film layer, A polypropylene film layer can be exemplified. In addition, both the outer layers 12 and 13 do not necessarily need to be the same kind of resin layers.

On the other hand, the resin film 10 according to the present embodiment has an oxygen permeability of 40 cc / m ³ · day or less. Here, the film having a low melting point and excellent heat-fusibility tends to have a low gas barrier property, and the relatively low cost and highly versatile film exemplified above is not so high in gas barrier property. Therefore, in the resin film according to the present embodiment, the middle layer 11 is a resin layer having a very low oxygen permeability so that the oxygen permeability is 40 cc / m ³ · day or less. By doing in this way, the oxygen permeability of the whole resin film 1 can be 40 cc / m < ³ > * day or less. The lower limit is not particularly limited, but 1.0 cc / m ³ · day is a practical lower limit considering that the film is suitable for toilet rolls such as cost.

  Specific examples of the middle layer 11 include a polyvinylidene chloride film layer, an ethylene-vinyl alcohol copolymer film layer (EVOH resin film layer) such as Eval manufactured by Kuraray Co., Ltd., and a film made of a resin in which a styrene elastomer is blended with EVOH resin. Examples thereof include a biaxially stretched polyvinyl alcohol film layer (PVOH resin film layer) manufactured by Nippon Synthetic Chemical, and a film layer obtained by depositing alumina / silica on a nylon film such as Eco-Sial manufactured by Toyobo.

  On the other hand, the resin film 10 according to the present embodiment has a tensile strength of 60 Mpa or less. When the tensile strength exceeds 60 MPa, it is difficult to open and difficult to open. The lower limit is 5 MPa because it cannot be intentionally broken and the strength of the package cannot be maintained. In order to obtain this tensile strength, the resin film 10 according to the present embodiment has a thickness 1 of the middle layer 11 having a low oxygen permeability and a high rigidity and a total stiffness of the resin film 10 of 15 to 100 μm. It is desirable that the thickness of the outer layers 12 and 13 is 5 to 70 μm. At this time, both outer layers do not necessarily have the same thickness. As described above, by making the thickness of the middle layer 11, which tends to be highly rigid, extremely thin and increasing the thickness of the flexible outer layer with a low melting point, good openability can be obtained.

  On the other hand, the resin film 10 according to the present embodiment desirably has a tensile fracture strain in the MD direction of 50 to 800% during production, and a 50 to 800% tensile fracture strain in the TD direction perpendicular thereto. Within this range, it is easy to package so as to be in close contact with the cylindrical toilet roll, and in particular, the handle portion 30 having the finger hooking holes 31 on the upper portion as in the gusset packaging of FIG. 2 is formed. In this case, it is possible to prevent the finger from becoming painful by being stretched appropriately when the finger is placed on the finger-holding hole 31 and carried. This tensile fracture strain can be achieved by selecting the resin type together with the thickness of the resin film.

  In addition, the tensile strength and the tensile fracture strain in the present invention are values obtained based on JIS K 7127, with the width of the test piece being 25 mm, the distance between chucks of 50 mm, and the speed of 300 mm / min.

Here, to summarize the preferable configuration of the resin film 10 of the present embodiment, the outer layers 12 and 13 are low melting point film layers having a melting point of 150 ° C. or less, and the middle layer 11 is an oxygen permeability of 40 cc / m ³ · day or less. It is preferable that the thickness of each of the outer layers 12 and 13 is 5 to 70 μm, the thickness of the middle layer 11 is 1 to 50 μm, and the total thickness of the resin film 1 is 15 to 100 μm. , 13 are preferably selected from the above types of resins.
By using such a resin film 10, a fragrance | flavor permeate | transmits the resin film 10 and comes to volatilize outside comes to be prevented effectively.
Here, in order to make the resin film 10 according to the present embodiment have a three-layer structure, a laminated structure may be formed by a co-extrusion method by a T-die method or an extrusion lamination method.
Note that the present invention is not limited to the illustrated three-layer structure, and may be a four-layer structure or a five-layer structure, for example.

  On the other hand, the toilet roll 20 according to the present embodiment is a scented toilet roll to which a fragrance is imparted. Examples of the position where the fragrance is attached include front and back surfaces of toilet paper, paper tubes, and end surfaces of toilet rolls. If the paper tube has a core with a fragrance attached to the paper tube, the fragrance will not adhere to the skin when the toilet paper is used. This is desirable because it will give off a fragrance for a long time in the toilet until it is used up.

  As the fragrance, a natural or synthetic fragrance can be used. Specific examples include natural perfumes such as lemon oil, grapefruit oil, rosemary oil, peppermint oil, mandarin oil, lime oil, yuzu oil, chamomile oil, lavender oil, rose oil, spearmint oil; linalool, citronellol, menthol, Synthetic fragrances such as alcohols such as geraniol. These may be used alone or in combination as a blended fragrance. The selection of the fragrance may be determined according to the desired fragrance tone. In addition, a fragrance | flavor can be diluted using vegetable oils, such as mineral oil, such as dipropylene glycol and paraffin oil, castor oil, and soybean oil, in order to adjust the intensity | strength of a fragrance | flavor and volatility.

In particular, the resin film 10 according to this embodiment has an oxygen permeability of 40 cc / m ³ · day or less, which is an order of magnitude lower than conventional polyethylene films and polypropylene films, and is a highly volatile fragrance that has been difficult to use conventionally. Can be used. In perfume products such as perfumes, the fragrance that is called the top note is highly volatile and strongly felt in the early days, the fragrance that is called the bottom note that is gradually felt low, and the middle note. These intermediate scents are appropriately mixed to form complex scents and changes in scent over time. In the scented toilet roll, since the oxygen permeability of the resin film of the package is high, it has hitherto been difficult to impart the scent of the top note in particular. The toilet roll package 1 according to the present embodiment is a perfume according to the top note, and in terms of numerical values, it becomes possible to use a perfume having a vapor pressure of 50 Pa or more in an environment of a temperature of 20 ° C. and a humidity of 50% RH. It is desirable that the toilet roll 20 using such a fragrance is packaged.

  On the other hand, as a packaging form of the toilet roll packaging body 1 according to the present embodiment, caramel packaging can be exemplified in addition to gazette packaging having a handle portion 30 having finger hook holes 31 at the upper portion as shown in FIG. Caramel wrapping wraps a packaged object with a film, adheres the overlapping edges in the winding direction, and further extends the part extending beyond the packaged object from two opposing edges. It is a packaging mode in which at least the front edge portions of the triangular piece or trapezoidal piece formed at that time are bonded by fusing or the like, and is suitable for packaging of about 2 to 4 toilet rolls. . A known apparatus is used as the apparatus for performing the caramel wrapping.

  On the other hand, the gusset packaging according to the illustrated toilet roll packaging body 1 is a packaging form in which the toilet roll 20 is enclosed in a resin film formed in a cylindrical shape and sealed at both end openings and heat fusion treatment. Such a gusset packaging is a bag-like precursor in which a resin film is formed into a cylindrical shape, and one opening is sealed in advance by heat fusion processing or the like, and a handle is formed, and the handle is formed. In many cases, a packaging procedure is performed in which an article to be packaged is inserted and then the other opening is sealed by heat sealing. The gusset packaging has a relatively high sealing property because the opening portions at both ends are sealed by heat fusion treatment or the like, and is a packaging form particularly suitable for the package 1 of the scented toilet roll 20 of the present embodiment.

  However, in gusset packaging, in order to take the procedure of inserting the toilet roll group into the bag-like precursor and sealing the opening at the other end, a part of the bag-like precursor has an air hole communicating inside and outside. May be. Due to the slip effect of the film and the high sealing performance of the gusset packaging, the fragrance does not leak out from the air holes. However, in the toilet roll package 1 of the present embodiment, the fragrance leaks from the air holes formed for the gusset packaging. In order to make it difficult, air holes 32 are formed at positions P and P through which air escapes from the inside of the package toward the handle portion 30. At this position, the air holes 32 are crushed when the toilet roll packaging is stacked and displayed at the storefront or stored in a cardboard case, so that the fragrance leaks to the outside through the air holes 32. Can be prevented.

Examples and Comparative Examples of the present invention were prepared and tested for evaluation of fragrance sustainability, heat fusion processability, and ease of opening.
The resin film according to Example 1 is a three-layer laminate film having a thickness of 30 μm, in which both outer layers are polyethylene resin layers and the middle layer is a vinyl chloride copolymer resin layer. The thickness of each layer is 14 μm for both PE layers and 2 μm for the EVOH layer. In addition, EVOH made from Kuraray Co., Ltd. was used for EVOH.

  Similarly, Example 2 is a three-layer laminate film having a thickness of 90 μm in which both outer layers are polyethylene resin layers and the middle layer is a vinyl chloride copolymer resin layer. The thickness of each layer is 10 μm and 60 μm for both PE layers and 30 μm for the EVOH layer. Example 3 is also a 17 μm thick three-layer laminate film in which both outer layers are polyethylene resin layers and the middle layer is a vinyl chloride copolymer resin layer. The thickness of each layer is 8 μm for both PE layers and 1 μm for the EVOH layer.

  The resin film according to Comparative Example 1 is an unstretched polypropylene film (CPP) having a thickness of 50 μm.

  The resin film according to Comparative Example 2 is a low density polyethylene film (LDEP) having a thickness of 50 μm.

  The resin film according to Comparative Example 3 is a biaxially stretched polypropylene film (OPP) having a thickness of 20 μm.

  The resin film according to Comparative Example 4 is a polyethylene terephthalate film (PET) having a thickness of 25 μm.

  The resin film according to Comparative Example 5 is a low density polyethylene film (LDEP) having a thickness of 10 μm.

  The resin film according to Comparative Example 6 is an unstretched polypropylene film (CPP) having a thickness of 110 μm.

(Scent persistence)
The scent sustainability test was conducted by twelve toilet rolls coated with 300 μl of fragrance (trade name fruity floral, vapor pressure 67 Pa) on a paper tube, hermetically packaged with various films, placed in these heat shock testers, at a temperature of 50 It was placed in an environment of 50 ° C. and humidity of 50%. One day later, two days later, three days later, and four days later, the sample was taken out, and the sample was opened to check whether or not the fragrance remained. One day in the heat shock tester corresponds to two months of actual use.
The fragrance was confirmed by 10 subjects, each of which was evaluated in three stages: “scent remains”, “no scent”, and “cannot say either”.
In the table, ◯ indicates that 5 or more of the 10 subjects evaluated that “the fragrance remains”, and x indicates the others.

(Heat sealability)
The film according to the example and the comparative example was subjected to heat fusion treatment by gusset packaging at a temperature of 90 ° C., and it was visually confirmed whether or not the heat fusion was sufficiently performed.
◯ in the table indicates that heat fusion has been performed to such an extent that bag formation is possible, △ indicates that there is unevenness in the heat fusion location, and bag formation is difficult, and × indicates that heat fusion has not occurred. Each means.

(Ease of opening)
The ease of opening was evaluated by three subjects: 10 subjects tore each film, and “Easy to open”, “Easy to open but somewhat strong”, and “Difficult to open”.
In the table, ○ indicates that 5 or more of the 10 subjects evaluated that “can be easily opened”, and x indicates the other.
Table 1 below shows the results of the tests and the more specific physical properties / compositions of various films according to Examples and Comparative Examples.
In addition, the tensile strength and tensile fracture strain in the table were performed based on JIS K 7127 with the width of the test piece being 25 mm.

  Looking at the results of each test in Table 1, in the packaging according to Examples 1 to 3 of the present invention, the scent is sufficiently felt even after 4 days in the scent sustainability test. This corresponds to 8 months of normal use, and it was confirmed that the scent can be sufficiently retained even with a toilet roll containing a highly volatile fragrance.

  Moreover, it was confirmed that the heat-fusibility was good and it could be handled in the same manner as conventional polyethylene films and polypropylene films, and that conventional gusset packaging equipment and pillow packaging equipment using thermal fusion could be used without problems. Moreover, it has confirmed that it has moderate elongation and strength, and there is no problem in opening.

On the other hand, Comparative Example 1 and Comparative Example 2 are examples in which a highly volatile toilet roll is packaged using an unstretched polypropylene film and a low-density polyethylene film that are used in a conventional toilet roll package, Although there is no problem with heat-sealing and openability, the oxygen permeability exceeds 1300 cc / m ³ · day, and the scent of toilet rolls decreases after only 2 months. It was confirmed that. Moreover, even if it was polypropylene, it has confirmed that the biaxially stretched polypropylene film was inferior to heat-fusion processability and unsealing property.

The one wrapped with the polyethylene terephthalate film of Comparative Example 4 had a low oxygen permeability of 43 cc / m ³ · day, but it was confirmed that the fragrance decreased in about 6 months. Moreover, compared with 50 micrometers of Comparative Examples 1-Comparative Example 3, it was as thin as 25 micrometers, but although tensile strength was too strong, it was confirmed that there exists a problem in unsealing property. Furthermore, it was confirmed that the heat fusion processability was not possible at the heat fusion temperature of conventional equipment. Even when the polyethylene terephthalate film has a three-layer structure with another film, it is predicted that it is difficult to achieve both oxygen permeability and tensile strength.

  On the other hand, Comparative Example 5 is an example of packaging with a very thin low-density polyethylene film of 10 μm, and the tensile strength of the resin film is very low at 4 MPa in both the MD direction and the TD direction. In this example, it was confirmed that the scent of the oxygen transmission rate was reduced in only about two months, and further, the heat sealability was also deteriorated.

  Moreover, the comparative example 6 is packaged with a 110 μm biaxially stretched polypropylene film, and is a low example in which the tensile strength of the resin film is as high as 100 MPa in the MD direction and 130 MPa in the TD direction. In this example, there is a problem in unsealing property and oxygen permeability is high. Moreover, the deterioration of the heat sealing property considered to be due to the increase in thickness was confirmed.

  As described above, by adopting the configuration of the toilet roll package according to the present invention, it can be manufactured and handled without changing from the conventional toilet roll package, and the variation of "scent" can be increased. it can.

DESCRIPTION OF SYMBOLS 1 ... Toilet roll package, 10 ... Resin film, 11 ... Middle layer, 12, 13 ... Outer layer, 20 ... Toilet roll, 30 ... Handle part, 31 ... Finger hook hole, 32 ... Air hole.

  The present invention relates to a toilet roll package.

Toilet rolls that are rolled up with toilet paper into a tubular shape are packaged with a thin polyethylene film or polypropylene film having a thickness of about 20 to 50 μm to make a product.
This polyethylene film and polypropylene film are flexible in terms of flexibility to fit a toilet roll having a soft cylindrical shape, and ease of heat-sealing treatment performed when forming or sealing a bag. Very suitable for packaging.

By the way, in the toilet roll, what gave the fragrance | flavor to the toilet paper and paper tube which are structural members, and was scented is proposed. Conventionally, this scented toilet roll is also packaged with a thin polyethylene film or polypropylene film.
However, since the toilet roll has a low density and a cylindrical shape, there are many portions that come into contact with air in the package, and the imparted fragrance is very volatile in the package.

On the other hand, the polyethylene film and the polypropylene film are not necessarily high in terms of gas barrier properties, and when using a highly volatile fragrance, when pre-shipment storage after commercialization, during warehouse storage after shipment, There is a risk of fragrance leaking outside during store display.
For this reason, in the toilet roll, the fragrance | flavor to be used is restricted to the thing with low volatility, and the increase in the variation of "fragrance" and the product discrimination by it are difficult.

Patent 4627137 JP-A-11-197054 JP 2009-280232 A

  Then, the main subject of this invention is providing the toilet roll package which can be manufactured and handled without changing with the conventional toilet roll package, and can increase the variation of "fragrance".

The present invention that has solved the above problems is a toilet roll package in which a toilet roll is packaged with a resin film,
The toilet roll is a scented toilet roll containing a fragrance,
The resin film is a laminated film having three or more resin layers, the melting points of both outer resin layers are 150 ° C. or less, the middle resin layer is an ethylene-vinyl alcohol copolymer film layer, and a polyvinylidene chloride film. A film layer selected from the group consisting of a film layer made of a resin in which a styrene elastomer is blended with an ethylene-vinyl alcohol copolymer resin, a biaxially stretched polyvinyl alcohol film layer, and a film layer obtained by depositing alumina / silica on a nylon film. And the oxygen permeability is 40 cc / m ² · day · atm or less,
This is a toilet roll package.

Resin film according to the present invention, the resin layer is ethylene middle - vinyl alcohol copolymer off Irumu layer, polyvinylidene chloride film layer, an ethylene - film layer comprising a vinyl alcohol copolymer resin resin containing a styrene elastomer biaxially oriented polyvinyl alcohol Rufirumu layer, a film layer which is selected alumina-silica nylon film from the group of the deposited film layer, not more than a melting point 0.99 ° C. of the resin layer of the two outer layers, oxygen permeability Since it is 40 cc / m ³ · day or less, it is excellent in heat sealability and gas barrier properties, can be produced in the same manner as a conventional toilet roll package, and permeates through the resin film and volatilizes outside the fragrance. There is nothing. In addition, the outer layer as used in the field of this invention means the outermost layer located in each surface of a resin film, and does not mean the layer located in the outer side of a package body.

Moreover, it is desirable that both outer layers of the resin film are polyethylene resin layers.
The gas barrier property, the melting point of the outermost layer can be easily designed, and the cost is low.

In addition, the toilet roll desirably contains a fragrance having a vapor pressure of 50 Pa or higher in an environment of a temperature of 20 ° C. and a humidity of 50% RH.
Since the package according to the present invention has a high gas barrier property of the resin film, it is possible to use a fragrance having a vapor pressure of 50 Pa or higher in an environment of a temperature of 20 ° C. and a humidity of 50% RH, which has been difficult in the past. . Therefore, it is desirable to enclose a toilet roll containing such a fragrance.

  Moreover, it is desirable that the toilet roll package is packaged in a gusset packaging format in which a handle portion having a finger hook hole is provided on the upper portion. A large number of toilet rolls such as 1 to 24 rolls or more can be easily packaged and is convenient to carry. Moreover, it can manufacture similarly to the conventional toilet roll package. Furthermore, since the film has sufficient flexibility, even if the finger is held in the finger-holding hole, the finger does not hurt.

  According to the present invention described above, it is an object to provide a toilet roll package that can be manufactured and handled in the same manner as a conventional toilet roll package and that can increase variations in "scent". .

It is a perspective view of the toilet roll package of the embodiment of the present invention. It is sectional drawing of the resin film which concerns on embodiment of this invention.

Next, an embodiment of the present invention will be described in detail below with reference to FIGS.
The toilet roll package 1 according to the present embodiment is obtained by packaging a plurality of toilet rolls with a resin film 10. In the form shown in FIG. 1, four toilet rolls 20, 20... Are arranged so as to be in contact with each other on the circumferential surface, and a total of 12 toilet roll groups in which three layers are stacked in the end face direction are formed with a resin film 10. It is packaged in a gusset packaging form and is a well-known commercial form of toilet roll. After the toilet roll package 1 is manufactured in a factory, the toilet roll package 1 is normally distributed to consumers through warehouse storage in the factory, shipping and transportation, shipping destination warehouse storage, and store display.

  On the other hand, the toilet roll 20 according to the present embodiment may be either a cored toilet roll in which a belt-shaped toilet paper is wound around a paper tube, or a coreless toilet roll called coreless. Good. The size of the toilet roll is not particularly limited. It is common that the height (width) is 100 to 115 mm, the winding diameter (diameter) is 100 to 120 mm, the core diameter is 10 to 48 mm, and the winding length is 20 to 100 m. Yes.

The toilet paper constituting the toilet roll 20 is not particularly limited in the present embodiment. Examples include those having a ply of 1 to 3 ply, a paper thickness of 100 to 180 μm, and a basis weight per ply of 11.0 to 25.0 g / m ² . In addition, the rice tsubo here is based on the JIS P 8124 (1998) rice tsubo measurement method, and the paper thickness is adjusted under the conditions of JIS P 8111 (1998) after sufficient humidity control. The average value measured five times using a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho).

  On the other hand, as shown in FIG. 2, the resin film 10 according to the present embodiment has three resin layers 11, 12, and 13, and the middle layer 11 and the outer layers 12 and 13 have different resin types. ing. Both the outer layers 12 and 13 have a melting point of 150 ° C. or less, and the both outer layers 12 and 13 have a low melting point, so that the resin film according to the present embodiment can ensure heat fusion processability. A lower melting point is preferable because it can be fused at a lower temperature, but if the melting point is excessively low, the resin film of the package may be scratched or punctured due to friction, etc., so the practical lower limit is 80 ° C. As the outer layers 12 and 13, specifically, a linear low density polyethylene film layer (LLDPE), a low density polyethylene film layer (LDPE), a polyethylene film layer such as a medium density polyethylene film layer (MDPE), a polystyrene film layer, A polypropylene film layer can be exemplified. In addition, both the outer layers 12 and 13 do not necessarily need to be the same kind of resin layers.

On the other hand, the resin film 10 according to this embodiment has an oxygen permeability of 40 cc / m ² · day · atm or less. Here, the film having a low melting point and excellent heat-fusibility tends to have a low gas barrier property, and the relatively low cost and highly versatile film exemplified above is not so high in gas barrier property. Therefore, in the resin film according to the present embodiment, the middle layer 11 is a resin layer having a very low oxygen permeability so that the oxygen permeability is 40 cc / m ² · day · atm or less. By doing in this way, the oxygen permeability of the whole resin film 1 can be 40 cc / m < ² > * day * atm or less. The lower limit is not particularly limited, but 1.0 cc / m ² · d ay · atm is a practical lower limit considering that the film is suitable for toilet rolls such as cost.

  Specific examples of the middle layer 11 include a polyvinylidene chloride film layer, an ethylene-vinyl alcohol copolymer film layer (EVOH resin film layer) such as Eval manufactured by Kuraray Co., Ltd., and a film made of a resin in which a styrene elastomer is blended with EVOH resin. Examples thereof include a biaxially stretched polyvinyl alcohol film layer (PVOH resin film layer) manufactured by Nippon Synthetic Chemical, and a film layer obtained by depositing alumina / silica on a nylon film such as Eco-Sial manufactured by Toyobo.

On the other hand, the resin film 10 according to the present embodiment has a tensile strength of 60 Mpa or less. When the tensile strength exceeds 60 MPa, it is difficult to open and difficult to open. The lower limit is 5 Mpa because it is unintentionally broken and the strength of the package cannot be maintained. In order to obtain this tensile strength, the resin film 10 according to the present embodiment has a thickness 1 of the middle layer 11 having a low oxygen permeability and a high rigidity and a total stiffness of the resin film 10 of 15 to 100 μm. It is desirable that the thickness of the outer layers 12 and 13 is 5 to 70 μm. At this time, both outer layers do not necessarily have the same thickness. As described above, by making the thickness of the middle layer 11, which tends to be highly rigid, extremely thin and increasing the thickness of the flexible outer layer with a low melting point, good openability can be obtained.

  On the other hand, the resin film 10 according to the present embodiment desirably has a tensile fracture strain in the MD direction of 50 to 800% during production, and a 50 to 800% tensile fracture strain in the TD direction perpendicular thereto. Within this range, it is easy to package so as to be in close contact with the cylindrical toilet roll, and in particular, the handle portion 30 having the finger hooking holes 31 on the upper portion as in the gusset packaging of FIG. 2 is formed. In this case, it is possible to prevent the finger from becoming painful by being stretched appropriately when the finger is placed on the finger-holding hole 31 and carried. This tensile fracture strain can be achieved by selecting the resin type together with the thickness of the resin film.

  In addition, the tensile strength and the tensile fracture strain in the present invention are values obtained based on JIS K 7127, with the width of the test piece being 25 mm, the distance between chucks of 50 mm, and the speed of 300 mm / min.

Here, when the preferable structure of the resin film 10 of this embodiment is put together, both the outer layers 12 and 13 are low melting point film layers having a melting point of 150 ° C. or less, and the middle layer 11 is 40 cc / m ² · day · of oxygen permeability. and atm or less of the film layer, and the thickness of the both outer layers 12, 13 5 to 70 m, the thickness of the middle layer 11 1 to 50 [mu] m, often to the total thickness of the resin film 1 and 15 to 100 m, also, each layer The resins 11, 12, and 13 are preferably selected from the above types of resins.
By using such a resin film 10, a fragrance | flavor permeate | transmits the resin film 10 and comes to volatilize outside comes to be prevented effectively.
Here, in order to make the resin film 10 according to the present embodiment have a three-layer structure, a laminated structure may be formed by a co-extrusion method by a T-die method or an extrusion lamination method.
Note that the present invention is not limited to the illustrated three-layer structure, and may be a four-layer structure or a five-layer structure, for example.

  On the other hand, the toilet roll 20 according to the present embodiment is a scented toilet roll to which a fragrance is imparted. Examples of the position where the fragrance is attached include front and back surfaces of toilet paper, paper tubes, and end surfaces of toilet rolls. If the paper tube has a core with a fragrance attached to the paper tube, the fragrance will not adhere to the skin when the toilet paper is used. This is desirable because it will give off a fragrance for a long time in the toilet until it is used up.

  As the fragrance, a natural or synthetic fragrance can be used. Specific examples include natural perfumes such as lemon oil, grapefruit oil, rosemary oil, peppermint oil, mandarin oil, lime oil, yuzu oil, chamomile oil, lavender oil, rose oil, spearmint oil; linalool, citronellol, menthol, Synthetic fragrances such as alcohols such as geraniol. These may be used alone or in combination as a blended fragrance. The selection of the fragrance may be determined according to the desired fragrance tone. In addition, a fragrance | flavor can be diluted using vegetable oils, such as mineral oil, such as dipropylene glycol and paraffin oil, castor oil, and soybean oil, in order to adjust the intensity | strength of a fragrance | flavor and volatility.

In particular, the resin film 10 according to this embodiment has an oxygen permeability of 40 cc / m ² · day · atm or less, which is much lower than conventional polyethylene films and polypropylene films, and has a volatility that has been difficult to use conventionally. High fragrance can be used. In perfume products such as perfumes, the fragrance that is called the top note is highly volatile and strongly felt in the early days, the fragrance that is called the bottom note that is gradually felt low, and the middle note. These intermediate scents are appropriately mixed to form complex scents and changes in scent over time. In the scented toilet roll, since the oxygen permeability of the resin film of the package is high, it has hitherto been difficult to impart the scent of the top note in particular. The toilet roll package 1 according to the present embodiment is a perfume according to the top note, and in terms of numerical values, it becomes possible to use a perfume having a vapor pressure of 50 Pa or more in an environment of a temperature of 20 ° C. and a humidity of 50% RH. It is desirable that the toilet roll 20 using such a fragrance is packaged.

  On the other hand, as a packaging form of the toilet roll packaging body 1 according to the present embodiment, caramel packaging can be exemplified in addition to gazette packaging having a handle portion 30 having finger hook holes 31 at the upper portion as shown in FIG. Caramel wrapping wraps a packaged object with a film, adheres the overlapping edges in the winding direction, and further extends the part extending beyond the packaged object from two opposing edges. It is a packaging mode in which at least the front edge portions of the triangular piece or trapezoidal piece formed at that time are bonded by fusing or the like, and is suitable for packaging of about 2 to 4 toilet rolls. . A known apparatus is used as the apparatus for performing the caramel wrapping.

  On the other hand, the gusset packaging according to the illustrated toilet roll packaging body 1 is a packaging form in which the toilet roll 20 is enclosed in a resin film formed in a cylindrical shape and sealed at both end openings and heat fusion treatment. Such a gusset packaging is a bag-like precursor in which a resin film is formed into a cylindrical shape, and one opening is sealed in advance by heat fusion processing or the like, and a handle is formed, and the handle is formed. In many cases, a packaging procedure is performed in which an article to be packaged is inserted and then the other opening is sealed by heat sealing. The gusset packaging has a relatively high sealing property because the opening portions at both ends are sealed by heat fusion treatment or the like, and is a packaging form particularly suitable for the package 1 of the scented toilet roll 20 of the present embodiment.

  However, in gusset packaging, in order to take the procedure of inserting the toilet roll group into the bag-like precursor and sealing the opening at the other end, a part of the bag-like precursor has an air hole communicating inside and outside. May be. Due to the slip effect of the film and the high sealing performance of the gusset packaging, the fragrance does not leak out from the air holes. However, in the toilet roll package 1 of the present embodiment, the fragrance leaks from the air holes formed for the gusset packaging. In order to make it difficult, air holes 32 are formed at positions P and P through which air escapes from the inside of the package toward the handle portion 30. At this position, the air holes 32 are crushed when the toilet roll packaging is stacked and displayed at the storefront or stored in a cardboard case, so that the fragrance leaks to the outside through the air holes 32. Can be prevented.

Examples and Comparative Examples of the present invention were prepared and tested for evaluation of fragrance sustainability, heat fusion processability, and ease of opening.
In addition, the resin film which concerns on Example 1 is a 30-micrometer-thick three-layer laminated film whose both outer layers are a polyethylene resin layer and whose middle layer is an ethylene -vinyl alcohol copolymer film layer . The thickness of each layer is 14 μm for both PE layers and 2 μm for the EVOH layer. In addition, EVOH made from Kuraray Co., Ltd. was used for EVOH.

Similarly, Example 2 is a three-layer laminate film having a thickness of 90 μm in which both outer layers are polyethylene resin layers and the middle layer is an ethylene-vinyl alcohol copolymer film layer . The thickness of each layer is 10 μm and 60 μm for both PE layers and 30 μm for the EVOH layer. Example 3 is also a 17 μm thick three-layer laminate film in which both outer layers are polyethylene resin layers and the middle layer is an ethylene-vinyl alcohol copolymer film layer . The thickness of each layer is 8 μm for both PE layers and 1 μm for the EVOH layer.

  The resin film according to Comparative Example 1 is an unstretched polypropylene film (CPP) having a thickness of 50 μm.

The resin film according to Comparative Example 2 is a low-density polyethylene film ( LDP E ) having a thickness of 50 μm.

  The resin film according to Comparative Example 3 is a biaxially stretched polypropylene film (OPP) having a thickness of 20 μm.

  The resin film according to Comparative Example 4 is a polyethylene terephthalate film (PET) having a thickness of 25 μm.

The resin film according to Comparative Example 5 is a low-density polyethylene film ( LDP E ) having a thickness of 10 μm.

  The resin film according to Comparative Example 6 is an unstretched polypropylene film (CPP) having a thickness of 110 μm.

(Scent persistence)
The scent sustainability test was conducted by twelve toilet rolls coated with 300 μl of fragrance (trade name fruity floral, vapor pressure 67 Pa) on a paper tube, hermetically packaged with various films, placed in these heat shock testers, at a temperature of 50 It was placed in an environment of 50 ° C. and humidity of 50%. One day later, two days later, three days later, and four days later, the sample was taken out, and the sample was opened to check whether or not the fragrance remained. One day in the heat shock tester corresponds to two months of actual use.
The fragrance was confirmed by 10 subjects, each of which was evaluated in three stages: “scent remains”, “no scent”, and “cannot say either”.
In the table, ◯ indicates that 5 or more of the 10 subjects evaluated that “the fragrance remains”, and x indicates the others.

(Heat sealability)
The film according to the example and the comparative example was subjected to heat fusion treatment by gusset packaging at a temperature of 90 ° C., and it was visually confirmed whether or not the heat fusion was sufficiently performed.
◯ in the table indicates that heat fusion has been performed to such an extent that bag formation is possible, △ indicates that there is unevenness in the heat fusion location, and bag formation is difficult, and × indicates that heat fusion has not occurred. Each means.

(Ease of opening)
The ease of opening was evaluated by three subjects: 10 subjects tore each film, and “Easy to open”, “Easy to open but somewhat strong”, and “Difficult to open”.
In the table, ○ indicates that 5 or more of the 10 subjects evaluated that “can be easily opened”, and x indicates the other.
Table 1 below shows the results of the tests and the more specific physical properties / compositions of various films according to Examples and Comparative Examples.
In addition, the tensile strength and tensile fracture strain in the table were performed based on JIS K 7127 with the width of the test piece being 25 mm.

  Looking at the results of each test in Table 1, in the packaging according to Examples 1 to 3 of the present invention, the scent is sufficiently felt even after 4 days in the scent sustainability test. This corresponds to 8 months of normal use, and it was confirmed that the scent can be sufficiently retained even with a toilet roll containing a highly volatile fragrance.

  Moreover, it was confirmed that the heat-fusibility was good and it could be handled in the same manner as conventional polyethylene films and polypropylene films, and that conventional gusset packaging equipment and pillow packaging equipment using thermal fusion could be used without problems. Moreover, it has confirmed that it has moderate elongation and strength, and there is no problem in opening.

On the other hand, Comparative Example 1 and Comparative Example 2 are examples in which a highly volatile toilet roll is packaged using an unstretched polypropylene film and a low-density polyethylene film that are used in a conventional toilet roll package, Although there is no problem with heat-sealing processability and openability, the oxygen permeability exceeds 1300 cc / m ² · day · atm , and the scent of toilet rolls is only 2 months long. It was confirmed that it would decrease. Moreover, even if it was polypropylene, it has confirmed that the biaxially stretched polypropylene film was inferior to heat-fusion processability and unsealing property.

  The one wrapped with the polyethylene terephthalate film of Comparative Example 4 has an oxygen permeability of 43. cc / m ² ・ Day ・ atmHowever, it was confirmed that the fragrance decreased in about 6 months. Moreover, thickness is Comparative Example 1- Comparative Example2It was confirmed that there was a problem in unsealing property because the tensile strength was too strong, although it was as thin as 25 μm. Furthermore, it was confirmed that the heat fusion processability was not possible at the heat fusion temperature of conventional equipment. Even when the polyethylene terephthalate film has a three-layer structure with another film, it is predicted that it is difficult to achieve both oxygen permeability and tensile strength.

On the other hand, Comparative Example 5 is an example of packaging with a very thin low-density polyethylene film of 10 μm, and the tensile strength of the resin film is very low at 4 Mpa in both the MD direction and the TD direction. In this example, it was confirmed that the scent of the oxygen transmission rate was reduced in only about two months, and further, the heat sealability was also deteriorated.

Comparative Example 6 is a case where the resin film is packaged with a 110 μm biaxially stretched polypropylene film, and the tensile strength of the resin film is 100 Mpa in the TD direction and 130 Mpa in the MD direction. In this example, there is a problem in unsealing property and oxygen permeability is high. Moreover, the deterioration of the heat sealing property considered to be due to the increase in thickness was confirmed.

  As described above, by adopting the configuration of the toilet roll package according to the present invention, it can be manufactured and handled without changing from the conventional toilet roll package, and the variation of "scent" can be increased. it can.

DESCRIPTION OF SYMBOLS 1 ... Toilet roll package, 10 ... Resin film, 11 ... Middle layer, 12, 13 ... Outer layer, 20 ... Toilet roll, 30 ... Handle part, 31 ... Finger hook hole, 32 ... Air hole.

Claims (4)

A toilet roll package in which a toilet roll is packaged with a resin film,
The toilet roll is a scented toilet roll containing a fragrance,
The resin film is a laminated film having two or more resin layers, the melting point of the outer resin layer is 150 ° C. or less, the oxygen permeability is 40 cc / m ³ · day or less, and the tensile strength is 60 Mpa. A toilet roll package characterized by the following:   The toilet roll package according to claim 1, wherein the resin film has an inner layer of a vinyl chloride copolymer resin layer and an outer layer of a polyethylene resin layer.   The toilet roll package according to claim 1 or 2, wherein the toilet roll includes a fragrance having a vapor pressure of 50 Pa or more in an environment of a temperature of 20 ° C and a humidity of 50% RH.   The toilet roll package according to any one of claims 1 to 3, wherein the toilet roll package is packaged in a gusset packaging format in which a handle portion having a finger hook hole is formed at an upper portion.

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