JP6158529B2 - Packaging container - Google Patents

Description

  The present invention relates to a packaging container that accommodates a wrap film wound in a roll shape.

  A packaging container for storing a wrap film is generally a container main body for storing a film roll wound in a roll on a cylindrical paper tube, a lid provided integrally with the container main body, And cutting means provided at the lower end. The user opens the lid, pulls out the wrap film from the container for a predetermined length, closes the lid, presses the lid front plate with the thumb of one hand, and pulls out while fixing the wrap film. The wrap film is cut by pulling the wrap film with the other hand.

  When the wrap film is cut, there is a problem that the cut end portion of the drawn wrap film is rewound into the box by the bounce at the time of cutting (the next drawing becomes difficult). Therefore, it has been attempted to provide a temporary fixing portion on the main body front plate of the container main body to increase its locking force (see, for example, Patent Document 1). In patent document 1, by making the shape of a temporary fix | stop part into a specific shape, the latching performance of a wrap film is improved, peeling of a wrap film is made easy, and the side slip of a wrap film is suppressed. Here, a crosslinkable curing varnish is exemplified as the temporary fixing portion.

JP 7-33139 A

  However, as pointed out in paragraph 0006 of Patent Document 1, an attempt is made to increase the locking force and reduce the area of the temporary fixing part, or, as in the invention of Patent Document 1, temporary fixing. The shape of the part was reviewed and improved. Therefore, in the varnish coating layer for temporarily fixing the wrap film, it has not been known how the adhesion force or adhesive force of the wrap film to the varnish coating layer affects the ease of use.

  The object of the present invention relates to a packaging container that accommodates a wrap film wound in a roll shape. (1) The wrap film does not rewind after cutting the wrap film, and (2) an attempt is made to cut the wrap film from the end. Sometimes the wrap film is difficult to slip, (3) The wrap film is easy to pick when the wrap film is continuously cut, and there is no film tearing. (4) After the wrap film is cut, the wrap film is further passed after a predetermined time has passed. It is an object of the present invention to provide a packaging container with improved ease of use such that a wrap film can be easily picked even when it is cut and the film does not tear.

The present inventors make the packaging container easy for the user to use from the viewpoints of the above (1) to (4) by setting the shear strength and T-type peel strength of the wrap film to the varnish coating layer within a predetermined range. The present invention was completed. That is, the packaging container according to the present invention is a rectangular main body bottom plate, a main body front plate and a main body rear plate standing on the long side of the main body bottom plate, and a short side of the main body bottom plate. A container main body having a main body left side plate and a main body right side plate, accommodating a film roll in which a wrap film is wound in a roll shape, and being connected to an upper end side of the main body rear surface plate; A lid having a lid top plate that covers the top opening of the main body when closed, a lid front plate that is connected to the lid top plate and is placed on the outside of the main body front plate, and is fed from the film roll And a cutting means provided on the lid front plate for cutting the wrap film drawn from between the main body front plate and the lid front plate, on the surface of the main body front plate, Temporarily fix the wrap film Has a varnish coating layer, relative to the varnishing layer is the wrap film, characterized by having a shear strength and T-peel strength satisfies the condition 1.
(Condition 1)
Measured according to JIS Z-0237: 2009 “Testing method for adhesive tape and adhesive sheet”. The shear strength between the varnish coating layer sample piece having a width of 25 mm and the wrap film is 9.0 N / 25 mm or more, and the T-type peel strength is 4.0 × 10 ⁻² N / 25 mm or more and 3.0 × 10 ⁻¹ N. / 25 mm or less.

  In the packaging container which concerns on this invention, it is preferable that the said varnish application layer is apply | coated to all or one part of the area | region which overlaps with the said cover front board among the surfaces of the said main body front board. It becomes easier to use from the viewpoints of (1) to (4).

  In the packaging container which concerns on this invention, it is preferable that the said main body front plate has a flap containing the cut line formed in this main body front plate, and the said varnish coating layer is provided in the front surface of this flap. . Since the flap angle changes according to the wrap film drawing angle, the wrap film is unlikely to unwind and the wrap film is easily picked.

  In the packaging container according to the present invention, the varnish application layer includes an application pattern in which application parts and non-application parts are alternately arranged, an application pattern in which the application part surrounds the non-application part, or an application part. Any one of the application patterns arranged along the side direction or a combination of these application patterns may be provided. The shear strength and T-type peel strength are easy to keep within the specified range, and by suppressing the strong adhesion of the wrap film over time, the resistance when the wrap film is picked is reduced, and the vertical tear when picked Can be prevented.

  In the packaging container according to the present invention, the varnish coating layer is preferably a UV curable varnish layer. Mirror surface adhesion between the varnish coating layer and the wrap film is further enhanced.

  The packaging container of the present invention has (1) no wrap film rewind after cutting the wrap film, (2) the wrap film is difficult to slip when trying to cut the wrap film from the end, and (3) the wrap film is cut The wrap film is easy to pick up when it is continuously performed, and there is no film tear. Easy to use in that there is no.

It is a perspective view which shows an example of the packaging container which concerns on this embodiment. It is a front view which shows the state which closed the lid | cover of the packaging container shown in FIG. It is the elements on larger scale of the container main body which shows the other form of the packaging container which concerns on this invention. It is a front view of the main body front board which has a flap. It is a figure which shows the example of the application pattern of the varnish application layer in a flap, (a) is an application pattern which arranged an application part and a non-application part alternately in the shape of a slanting line, (b) is an island-like application part, A coating pattern in which a plurality of coating patterns are arranged at intervals, (c) is a coating pattern in which the coating part surrounds the island-shaped non-coating part, and (d) is a horizontal line-shaped coating part along the long side direction of the container body. An application pattern arranged in the same manner. It is a figure which shows the modification of the application pattern shown in FIG.

  Next, the present invention will be described in detail with reference to embodiments, but the present invention is not construed as being limited to these descriptions. As long as the effect of the present invention is exhibited, the embodiment may be variously modified.

  FIG. 1 is a perspective view showing an example of a packaging container according to the present embodiment. FIG. 2 is a front view of the packaging container shown in FIG. The packaging container 100 according to the present embodiment has a rectangular main body bottom plate 11, a main body front plate 12 and a main body rear plate 13 erected on the long side of the main body bottom plate 11, and a short side of the main body bottom plate 11. A container main body 10 having a main body left side plate 14 and a main body right side plate 15 and containing a film roll 40 in which the wrap film 1 is wound in a roll shape; A lid top plate 21 connected to the upper end side 13a and covering the upper surface opening of the container body 10 when closed; a lid front plate 22 connected to the lid top plate 21 and disposed on the outside of the main body front plate 12; And a cutting means 30 provided on the lid front plate 22 for cutting the wrap film 1 drawn out from between the main body front plate 12 and the lid front plate 22. In the packaging container The varnish coating layer 5 for temporarily fixing the wrap film 1 is provided on the surface of the main body front plate 12, and the varnish coating layer 5 has a shear strength and a T-type peel strength satisfying the condition 1 with respect to the wrap film 1. . Here, it is preferable that the varnish coating layer 5 is provided on all or part of the region S1 overlapping the lid front plate 22 in the surface of the main body front plate 12. Since the varnish coating layer 5 overlaps with the place where the user presses with a finger, it becomes easier to use from the viewpoints of (1) to (4). In addition, FIG. 1 has shown the form which provided the varnish application layer 5 in a part of area | region S1.

Detailed test conditions will be described in Examples, but Condition 1 is as follows. Measured according to JIS Z-0237: 2009 “Testing method for adhesive tape and adhesive sheet”. The shear strength between the 25 mm wide varnish coating layer sample piece and the wrap film is 9.0 N / 25 mm or more, and the T-type peel strength is 4.0 × 10 ⁻² N / 25 mm or more and 3.0 × 10 ⁻¹ N / 25 mm or less.

The shear strength between the sample piece and the wrap film means the shear strength when the wrap film 1 is shifted parallel (shear direction) to the varnish coating layer 5. Here, in JIS Z-0237: 2009, it corresponds to the 180 ° peel adhesive strength, but in the present invention, it is the strength resulting from the specular adhesion, and thus it is the shear strength. Further, the T-type peel strength between the sample piece and the wrap film means the T-type peel strength when the wrap film 1 is pulled vertically with respect to the varnish coating layer 5. Here, in JIS Z-0237: 2009, it corresponds to the 90 ° peel adhesive strength, but in the present invention, it is the strength resulting from the specular adhesion, and is therefore the T-type peel strength. According to the study by the present inventors, it was found that the T-type peel strength plays an important role in addition to the varnish strength suitable for the wrap carton and the shear strength. When the T-type peel strength is less than 4.0 × 10 ⁻² N / 25 mm, the wrap film is easily displaced when the wrap film is to be cut from the end, and the cut property is deteriorated. Moreover, when T-type peeling strength exceeds 3.0 * 10 < ^-1 > N / 25mm, a wrap film will adhere too much and it will be hard to pick and it will become easy to produce the vertical tear of a wrap film. On the other hand, it was found that if the shear strength is 9.0 N / 25 mm or more, it can sufficiently perform a locking function for preventing a rewind phenomenon in which the wrap film is rewound into the carton. The reason why the T-type peel strength affects the cutting property is that when cutting, the lid front plate is pulled away from the main body front plate with a film, so the lap that is in close contact with the main body front plate is pulled vertically. This is because the wrap is easily separated from the varnish surface. Therefore, in order to obtain a packaging container that is unlikely to cause such problems and is easy to use, the shear strength is 9.0 N / 25 mm or more, preferably 12.0 N / 25 mm or more, more preferably 14.0 N / 25 mm or more. Yes, T-type peel strength is 4.0 × 10 ⁻² N / 25 mm or more and 3.0 × 10 ⁻¹ N / 25 mm or less, preferably 7.8 × 10 ⁻² N / 25 mm or more and 2.5 × 10 ^−1. N / 25 mm or less, more preferably 9.8 × 10 ⁻² N / 25 mm or more and 2.0 × 10 ⁻¹ N / 25 mm or less. The 25 mm width of the sample piece is the width in the WW ′ direction in FIG. 1, and sampling is performed so that the varnish coating layer exists uniformly over the entire measurement width. When the varnish coating layer is partially interspersed with the varnish coating shape, the average portion is measured. In addition, since the width | variety to crimp | bond with a film should just be 25 mm, if the film width is 25 mm, the width | variety of a sample piece does not need to be 25 mm. That is, it is sufficient that the width to be crimped is divided by a width of 25 mm. Moreover, the height of a sample piece should just be larger than the height which includes all the varnish application layers. This is because the non-varnish coating layer does not closely adhere to the wrap film even if it is pressure-bonded to the wrap film, and thus hardly affects the results of shear strength and T-type peel strength. Moreover, when the varnish coating layer is less than 25 mm in width, it may be measured with a measurable width and converted to a width of 25 mm. In the measurement of shear strength and T-type peel strength, the maximum peak is read.

  The wrap film 1 is, for example, a wrap film, an aluminum foil, or a paper sheet for cooking. The wrap film is, for example, a polyvinylidene chloride film, a polyvinyl chloride film, a polyethylene film, a polypropylene film, a polymethylpentene film, a polyester film, or an ethylene vinyl acetate copolymer film. When applied to a vinylidene chloride resin wrap film having strong self-adhesive strength, the effect of the present invention becomes more remarkable. The wrap film includes a form containing various auxiliary agents such as a plasticizer and a stabilizer. The paper sheet for cooking is a sheet obtained by applying silicon resin processing or fluororesin processing to one or both sides of a paper base material. It does not matter whether the wrap film 1 is a single layer or a laminated layer. Although the thickness of the wrap film 1 is not specifically limited, In the case of a wrap film, it is generally 5-20 micrometers.

  The film roll 40 is formed by winding a wrap film 1 having a predetermined width and a predetermined length into a roll shape.

  The packaging container 100 is a horizontally long, substantially rectangular parallelepiped box including a container body 10, a lid 20, and a cutting means 30. The packaging container 100 is formed of a plate material such as paper or plastic. The thickness of the plate material is generally 0.45 to 0.75 mm. The present invention is not limited to the material of the packaging container 100 and the thickness of the plate material.

  The container body 10 is a part that houses the film roll 40. The container main body 10 includes a main body bottom plate 11, a main body front plate 12, a main body rear surface plate 13, a main body left side plate 14, and a main body right side plate 15, and has an upper surface opening.

  The main body bottom plate 11 is a rectangle having a long side and a short side. The length of the long side is not particularly limited as long as it is longer than the width of the film roll 40, but in general, it is preferably set to be 2 to 10 mm longer than the width of the film roll 40. More preferably, it is 3-6 mm. Although the length of the short side will not be specifically limited if it is longer than the length of the diameter of the film roll 40, Generally, it is preferable to set 1-8 mm longer than the length of the diameter of the film roll 40. More preferably, it is 3-6 mm. The main body front plate 12 and the main body rear plate 13 are rectangles formed with substantially the same dimensions as the main body bottom plate 11. The main body left side plate 14 and the main body right side plate 15 are substantially square, and the length of each side thereof is substantially the same as the length of the short side of the main body bottom plate 11. The upper surface opening is formed by upper end sides of the main body front plate 12, the main body rear plate 13, the main body left side plate 14, and the main body right side plate 15, and the film roll 40 is put in and out and the wrap film 1 from the film roll 40 is placed. Allows withdrawal.

  The lid 20 is a part that covers the upper surface opening of the container body 10 so as to be freely opened and closed. The lid 20 includes a lid top plate 21, a lid front plate 22 connected to the lid top plate 21, a lid left side plate 24, and a lid right side plate 25. The container main body 10 and the lid 20 are integrally provided with a lid top plate 21 connected to the upper end side 13 a of the main body rear plate 13. When the top opening is closed, the lid top plate 21 covers the top opening, the lid front plate 22 is disposed so as to overlap the outside of the main body front plate 12, and the lid left side plate 24 and the lid right side plate 25 are respectively the main body left side plate. 14 and the outside of the right side plate 15 of the main body.

  The cutting means 30 is for cutting the wrap film 1. Although the material and shape are not specifically limited, For example, it is a saw blade-shaped cutting blade formed of cardboard, plastic, metal or the like. The cutting means 30 is generally attached to the back surface (surface on the container main body side) of the lid front plate 22, and the tip of the blade protrudes from the lower end side 22 a of the lid front plate 22. In the packaging container 100 shown in FIG. 1, the lower end side 22a of the lid front plate 22 is in the longitudinal direction of the packaging container 100 (hereinafter, the longitudinal direction of the packaging container 100 is the WW ′ direction in FIG. 1). The entire convex part at the center is formed in a substantially V shape, and the cutting means 30 is also formed in a substantially V shape in accordance with this shape. In the present embodiment, the lid front plate 22 and the cutting means 30 as shown in FIG. 1 are not limited to a substantially V-shaped form. For example, the lower end side 22a of the lid front plate 22 and the cutting means 30 can be formed into a linear shape or a substantially U shape.

  When the varnish coating layer 5 is provided in a part of the region S1, as shown in FIG. 1, the main body left side plate 14 side end along the WW ′ direction is located below the upper end side 12a of the main body front plate 12. It is preferable to provide up to the end on the right side plate 15 side. There may be a non-varnish coating layer portion on the way. The height of the varnish coating layer 5 (the length in the height direction of the main body front plate) is, for example, 3 mm to 15 mm, preferably 5 to 10 mm.

  As another form of the main body front plate, a flap may be provided on the upper end side of the main body front plate. FIG. 3 is a partially enlarged perspective view of a container body showing another embodiment of the packaging container according to the present invention. FIG. 4 is a front view of a main body front plate having a flap. As shown in FIG. 3, the main body front plate 12 is connected to the flap 12 b including the cut line formed on the main body front plate 12, that is, the upper end side 12 a of the main body front plate 12, and is outside the container main body 10. A protruding flap 12b is provided, and a varnish coating layer 5 is provided on the front surface of the flap 12b. By providing the flap 12b, it is difficult for the wrap film to be rewound, and the wrap film is easily picked. Furthermore, since the angle of the flap 12b changes according to the drawing angle of the wrap film, the varnish coating layer 5 and the wrap film can be easily adhered to each other. Further, when the wrap film is cut, the wrap film can be made 180 °, that is, parallel to the varnish coating layer 5, so that the film can be hardly displaced. The form in which the varnish coating layer 5 is provided on the flap 12b is provided on the entire surface of the flap 12b or a part thereof. 3 and FIG. 4, the form which provided the varnish application layer 5b in a part of surface of the flap 12b was shown. It is preferable that the varnish coating layer 5 (5b) is disposed from end to end of the flap 12b along the WW ′ direction. The height of the varnish coating layer 5 (5b) (the length in the height direction of the main body front plate) is, for example, 3 mm to 15 mm, preferably 5 to 10 mm. As shown in FIG. 4, the coating pattern of the varnish coating layer 5b is a comb-shaped coating pattern in which the coating portions 5b and the non-coating portions 5d are alternately arranged in a vertical line shape, and further a horizontal line-shaped coating portion 5b is combined. It is preferable to have. In addition to the comb-shaped application pattern shown in FIG. 4, as shown in FIG. 5A, the application pattern in which the application part 5b and the non-application part 5d are alternately arranged along the long side direction of the container body 10 in an oblique line shape. It is also good. Here, it is good also as a coating pattern which changed the oblique line shape into the vertical line form (not shown). Alternatively, as shown in FIG. 5B, a plurality of island-shaped application portions 5b may be arranged in a line at intervals. The application pattern in FIG. 5B corresponds to a modification of the application pattern in which the application parts and the non-application parts are alternately arranged. Moreover, as shown in FIG.5 (c), it is good also as an application pattern in which the application part 5b surrounds the non-application part 5d. In FIG. 5C, more specifically, the application part 5b has a coating pattern surrounding a plurality of island-shaped non-application parts 5d arranged at intervals. Moreover, as shown in FIG.5 (d), it is good also as an application pattern which has arrange | positioned the application part 5b along the long side direction of the container main body 10. FIG. In FIG. 5D, more specifically, the coating part 5b has a horizontal line-shaped coating pattern. As shown in FIG. 6, in a portion (corresponding to a comb shape) in which the application portions 5b and the non-application portions 5d shown in FIG. 4 are alternately arranged in a vertical band shape, a horizontal band-like application portion 5b (at the root of a comb-shaped tooth). You may make it deform | transform into the application pattern which does not provide the corresponding part). Furthermore, the application pattern in which the application part is an island-like, dot-like, dot pattern consisting of a plurality of points, or the application pattern in which the non-application part is an island-like, dot-like, dot-like, dot pattern consisting of a plurality of points Various modifications may be made. Moreover, in this embodiment, it is good also as what combined these illustrated application patterns suitably. By making such a coating pattern, it is easy to adjust the T-peel strength within a predetermined range, and the adhesive area is always halved when the film is picked from below, so that the wrapping over time Strong adhesion of the film can be suppressed. Furthermore, as shown in FIGS. 3 and 4, it is preferable to further provide varnish coating layers 5a and 5c on the upper end side 12a side of the main body front plate 12 other than the flap 12b. When the wrap film is cut, the area that cannot be covered with the flap 12b can be brought into close contact, and the slip of the film can be effectively stopped. When not in use, the flap 12b is lifted from the main body front plate 12, and the wrap film remains in close contact with the varnish coating layer 5b, but tends to be peeled off from the varnish coating layers 5a and 5c. In this state, when the user next uses the wrap film, it becomes easy to pick the wrap film.

  As the varnish coating layers 5, 5 a, 5 b, 5 c, any conventionally known coating can be adopted as long as it is a coating film having adhesiveness to the wrap film 1, but a coating film dried by applying a crosslinkable curing varnish. It is preferable that As the crosslinkable curing varnish, a UV (ultraviolet) curable varnish is preferable. The type of UV (ultraviolet) varnish is not particularly limited, and examples thereof include radical polymerization type, addition polymerization type, and cationic polymerization type. The varnish coating layers 5, 5 a, 5 b and 5 c only have to be applied to the uppermost layer of the main body front plate 12, and a printing layer and a water-resistant transparent layer are provided between the base paper surface of the main body front plate 12 and the varnish coating layer. There may be other coating layers. The varnish coating layers 5, 5a, 5b, and 5c are preferably provided on the printing layer without interposing a water-resistant transparent layer.

  The adhesion performance of the varnish coating layers 5, 5a, 5b, and 5c to the wrap film 1 includes, for example, film forming conditions such as UV irradiation amount and drying speed of the varnish coating layer, the area ratio of the varnish coating layer to the region S1, and the varnish coating layer Can be adjusted by adjusting the printing pattern, smoothness of the varnish surface, adjustment of the varnish component, and the like. The printed pattern of the varnish coating layer is, for example, solid (full surface coating), dot-like or mesh-like, and as shown in FIG. 3 or FIG. It is the arranged pattern. In film formation conditions such as UV irradiation amount and drying speed of the varnish coating layer, for example, when the UV integrated irradiation amount is increased, the T-type peel strength increases according to the irradiation amount. Tend to be low. Therefore, the T-type peel strength can be adjusted by adjusting the amount of irradiation. Moreover, if the area ratio of the varnish application layer with respect to area | region S1 is high, contact | adhesion performance can be improved, and if it is low, contact | adhesion performance can be suppressed. Furthermore, regarding the printed pattern of the varnish coating layer, if the coating part and the non-coating part are alternately arranged, when the film is cut and then cut after a lapse of time, there is a problem that the adhesion of the film becomes too strong. Can be suppressed.

  Next, the present invention will be described in more detail with reference to examples, but the present invention is not construed as being limited to the examples.

[Measurement of shear strength and T-type peel strength]
Measurement is performed according to JIS Z-0237: 2009 “Testing method for adhesive tape and adhesive sheet”.
(Preparation of sample piece of varnish application part)
A mixture of SP varnish (stopper varnish, FDPCA KP-WRAP varnish manufactured by Toyo Ink Co., Ltd.) and diluent solvent (solvent C for KP varnish manufactured by Toyo Ink Co., Ltd.) at a volume ratio of 10: 3 is shown in FIG. It applied by the printing pattern. The coating film was cured by irradiation with a high-pressure mercury lamp. Samples A and B of packaging containers having different shear strength and T-type peel strength by adjusting the line speed or UV lamp irradiation power and the number of lamps to change the UV integrated irradiation amount from 24 mj / cm ^{2 to} 207 mj / cm ^2. , C, D were prepared. As shown in FIG. 4, area | region S2 was cut out among the flaps 12b, and the sample pieces A, B, C, and D of the varnish application part were obtained. The width of the region S2 was 25 mm, the left height was 15 mm, and the right height was 19 mm. The region S2 is in close contact with the wrap film, but is composed of a varnish application part 5b and a varnish non-application part 5d. The application pattern in the region S2 is a pattern in which the upper end side is 1 mm to 5 mm below and is solid (the varnish application portion 5b), and the upper end side from 5 mm to 14 mm below is a varnish non-application portion 5d.
The selection of the width 25 mm of the region S2 can be selected from the region where the varnish coating layer exists when the region S2 is cut. For example, it is preferable to select from a region where the varnish coating layer 5b exists continuously over the entire measurement width. Or you may select from the area | region where it replaces with the varnish coating layer 5b and the varnish coating layer 5c exists continuously over the measurement whole width. As shown in FIG. 5 (a) or FIG. 5 (b), when there is no region where the varnish coating layer exists continuously over the entire width of measurement where varnish coating portions and varnish non-coating portions exist alternately. In, the outline of the whole varnish application pattern which a plurality of varnish application parts form is assumed, and the part which the outline surrounds is regarded as the varnish application part. In FIG. 5A and FIG. 5B, the outline 6 is indicated by a dotted line. In addition, when the varnish non-application part is surrounded by the varnish application part like FIG.5 (c), the part which a varnish application part surrounds is considered as a varnish application part. If the measurement area width of 25 mm cannot be obtained, the measurement value is converted to 25 mm. Finally, a double-sided tape is applied to the back surface of the sample piece (the back surface of the surface coated with SP varnish). When multiple sample pieces with a width of 25 mm are obtained from one packaging container along the WW ′ direction, the center of the carton, which is a more important area for ease of use (1/2 of the total length of the carton) It is preferable to evaluate whether the shear strength and the T-type peel strength are within a predetermined range for at least one sample piece in a range including a portion). Moreover, you may evaluate whether shear strength and T-type peeling strength are in a predetermined range about all these sample pieces. When the shear strength and T-type peel strength of all these sample pieces fall within the predetermined ranges, the packaging container is easier to use.

(Production of film piece)
A wrap film (trade name NEW Kurewrap, manufactured by Kureha Co., Ltd.) was cut into a size of 25 mm in width and 100 mm in length. At this time, the length direction was matched with the film drawing direction. A paper tape (25 mm in width and 15 mm in length) was attached as a gripping margin to one end side in the length direction. At this time, the paper tape was pasted with the width direction of the paper tape and the width direction of the wrap film piece matched. The indoor environment was 23 ± 5 ° C. and 40 ± 20% RH.

(Press bonding of varnish coating layer and film piece)
The sample piece A is placed on the iron plate so that the varnish coating layer faces upward. At this time, the double-sided tape is attached to an iron plate. Next, of the lengthwise ends of the film pieces, the end portion opposite to the end where the paper tape is attached is covered with the varnish coating layer. At this time, the film piece is covered in a direction in which the width of the film piece is 25 mm and the width of the sample piece is 25 mm. As a result, the entire surface of the sample piece A is covered with the film piece. In addition, let the surface of the film piece closely_contact | adhered to a varnish application layer be a wrap lower side (surface which faces a winding core direction). Using a 2 kg roller crimping apparatus described in JIS Z-0237: 2009, the roller is rolled in the width direction of the film piece, and the film piece and the varnish coating layer are pressure-bonded to produce a pressure-bonded product A for measurement. For the sample pieces B, C, and D, the measurement pressure-bonded products B, C, and D are prepared.

(Measurement of T-type peel strength)
Tensilon (Orientec Co., Ltd.) is located above the iron plate with the paper tape side of the film piece of the crimped product for measurement A fixed to the base so that the normal of the surface to which the sample piece is attached faces upward. , Model number RTA-100), and a T-peel test is performed at a pulling speed of 300 mm / min. The measured value is the maximum value. Measurement is also performed for each of the pressure-bonded products B, C, and D for measurement.

(Measurement of shear strength)
The iron plate is sandwiched with Tensilon (lower side) on the stand so that the normal of the surface to which the sample piece is attached faces in the horizontal direction, and the paper tape side of the film piece of the measurement pressure-bonded product A is sandwiched with Tensilon (upper side). The shear strength test is performed at a pulling speed of 300 mm / min. The measured value is the maximum value. If the film piece is cut at an extremely low value, it is determined that the end face of the film is rough and is excluded from the data. Measurement is also performed for each of the pressure-bonded products B, C, and D for measurement.

  Table 1 shows the T-type peel strength and shear strength of the varnish coating layer sample pieces A, B, C, and D cut out from the samples A, B, C, and D of the packaging container.

(Rewind evaluation)
For each of the packaging container samples A, B, C, D, cut from the center of the wrap film, and after cutting, open the lid and blow from the bottom of the wrap film, the wrap film is peeled off from the varnish coating layer, It was confirmed whether it would roll back inside the container body. The n number was 5. The case where there was no rewinding was regarded as acceptable, and the case where there was rewinding was regarded as unacceptable. The results are shown in Table 2. Sample A with low T-type peel strength was judged to have a problem because rewinding easily occurred, and samples B, C, and D were judged to have no problem.

(Cutability (film displacement) evaluation when cut from the edge)
Cut each of the packaging container samples A, B, C, and D from the end of the wrap film. The angle θ between the front plate of the main unit and the wrap film is fixed, and the cut is carried out 5 times each. When the wrap film is displaced from the varnish coating layer and a good cut cannot be made, the point is slightly shifted. When it was possible, 1 point was given, and 2 points were given when the cut could be made satisfactorily without deviation, and an average value was obtained. The angle θ is as follows. Place the bottom plate of the main unit horizontally. At this time, the normal line of the main body front plate faces the horizontal direction. The angle of the normal line of the main body front plate is set as a reference of 0 °. Let θ be the angle formed between the normal of the main body front plate and the direction of drawing the wrap film when cutting with the wrap film drawing direction downward from the horizontal. When θ is 90 °, the wrap film does not hit the cutting means, so that it cannot be cut. In the above description, the bottom plate of the main body is placed horizontally for the sake of convenience in order to explain how to take θ. However, in actual cutting work, it is only necessary to cut θ while fixing θ at a predetermined angle. The direction of the packaging container may be changed in consideration. The results are shown in Table 3. Sample A with low shear strength has an average value of less than one point when θ is 15 ° or more, and is judged to be problematic. Samples B, C, and D have an average value of one point or more regardless of θ. Judged that there was no problem.

(Evaluation of ease of picking)
For each of samples A, B, C, and D of the packaging container, sensory evaluation was performed for ease of picking when the wrap film was picked. A case where a series of operations of “pinch the wrap film, pull out the wrap film, cut the wrap film” is continuously performed is regarded as a continuous evaluation. In the above-described series of operations, the case where “cut the wrap film” and “pinch the wrap film” are opened for 24 hours is evaluated after 24 hours. For each of samples A, B, C, and D, 20 people evaluated the series of operations once. 5 points when easy to pick wrap film, 4 points when easy to pick, 3 points when normal, 2 points when hard to pick, 1 point when hard to pick, average The value was determined. The results are shown in Table 4. Sample D, which has a strong T-peel strength, has an average value slightly below 3 points in the continuous evaluation, and the average value is much lower than 3 points in the evaluation after 24 hours. Since the average value of both continuous evaluation and evaluation after 24 hours was 3 points or more, it was judged that there was no problem.

(Evaluation of occurrence of vertical film tear)
In the evaluation of ease of picking (an evaluation result after 24 hours), the occurrence of vertical tearing of the wrap film when the wrap film was picked was evaluated. The case where there was no longitudinal tear was judged as acceptable, and the case where there was longitudinal tear was regarded as unacceptable. The results are shown in Table 5. Since sample D with strong T-peel strength was longitudinally torn, it was determined that there was a problem, and samples A, B, and C were determined to have no problem.

(Summary)
Table 6 summarizes the evaluation results. Samples B and C were evaluated as having no problem in all evaluations. Therefore, it is not necessary that the shear strength and the T-type peel strength are high, but it is necessary to form a packaging container having a value in a predetermined range.

1 Wrap film 5 Varnish coating layer 5a, 5b, 5c Varnish coating layer (coating part)
5d varnish non-applied part (non-applied part)
6 Contour Line 10 Container Body 11 Body Bottom Plate 12 Body Front Plate 12a Upper Edge 12b of Body Front Plate Flap 13 Body Rear Plate 13a Upper Edge of Body Rear Plate 14 Body Left Side Plate 15 Body Right Side Plate 20 Cover 21 Cover Top Plate 22 Lid front plate 22a Lower end side 24 of lid front plate Lid left side plate 25 Lid right side plate 30 Cutting means 40 Film roll 100 Packaging container O Longitudinal center S1, S2 Region WW 'Longitudinal direction HH' of packaging container Packaging container height direction DD 'Packaging container depth direction

Claims (5)

A rectangular main body bottom plate, a main body front plate and a main body rear plate standing on the long side of the main body bottom plate, and a main body left side plate and a main body right side plate standing on the short side of the main body bottom plate, A container main body having an upper surface opened to accommodate a film roll in which a wrap film is wound in a roll shape;
A lid top plate connected to the upper end side of the rear plate of the main body and covering the upper surface opening of the container main body when closed, and a lid front plate connected to the top cover plate of the lid and arranged on the outside of the front plate of the main body. And a lid having
In a packaging container comprising: cutting means provided on the lid front plate for cutting the wrap film that is drawn from the film roll and drawn from between the main body front plate and the lid front plate.
A varnish coating layer for temporarily fixing the wrap film is provided on the surface of the main body front plate, and the varnish coating layer has a shear strength and a T-type peel strength satisfying the condition 1 with respect to the wrap film. A packaging container.
(Condition 1)
Measured according to JIS Z-0237: 2009 “Testing method for adhesive tape and adhesive sheet”. The shear strength between the 25 mm wide varnish coating layer sample piece and the wrap film is 9.0 N / 25 mm or more, and the T-type peel strength is 4.0 × 10 ⁻² N / 25 mm or more 2.5 × 10 ⁻¹ N. / 25 mm or less.   The packaging container according to claim 1, wherein the varnish coating layer is applied to all or part of a region of the surface of the main body front plate that overlaps the lid front plate.   The said main body front plate has a flap containing the cut line formed in this main body front plate, The said varnish coating layer is provided in the front surface of this flap, The Claim 1 or 2 characterized by the above-mentioned. The packaging container as described.   The varnish coating layer is a coating pattern in which a coating portion and a non-coating portion are alternately arranged, a coating pattern in which the coating portion surrounds the non-coating portion, or a coating portion in which the coating portion is disposed along the long side direction of the container body. The packaging container according to any one of claims 1 to 3, comprising any one of the patterns or a combination of the application patterns.   The packaging container according to any one of claims 1 to 4, wherein the varnish coating layer is a UV curable varnish layer.

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