JP3596269B2 - Carton for wrap film - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carton for storing a roll-shaped wrap film, drawing out a film of a desired length from the carton at the time of use, and cutting the carton.
[0002]
[Prior art]
Cartons for wrap films to which the present invention is directed are well-known, and as a function provided in the carton, a rewind prevention function is also well-known. This function makes it easy to pull out the film at the next use by pulling out the wrap film from the carton to a desired length and keeping the film cut by the blade member provided in the carton at a predetermined position in the carton. Function. As a specific configuration of the rewind preventing function, there is JP-A-1-9151. This forms a rewind preventing portion by a flat coating layer of a crosslinkable curing varnish. In this configuration, the anti-rewind portion itself does not have adhesiveness, but since the anti-rewind portion forms a smooth surface, it is suitable for a self-adsorbing wrap film such as polyvinylidene chloride or polyvinyl chloride. Had high adsorptivity and satisfied the function of preventing unwinding.
[0003]
[Problems to be solved by the invention]
However, when the wrap film is made of polyethylene, polypropylene, or a laminate having these resins on the surface, there is a problem that the self-adhesiveness of the film itself is weak, and the film is not sufficiently adsorbed to the rewind preventing portion.
[0004]
Therefore, the present invention provides a wrap film carton having a rewind preventing portion capable of sufficiently adhering any type of wrap film by imparting adhesiveness to the rewind preventing portion itself. It is.
[0005]
In addition, the unwinding prevention unit of the present invention has self-adhesiveness and performs an unwinding prevention function, and also has a function of simultaneously preventing blanks stacked in a blank state before box formation from blocking each other. And a carton for a wrap film having a portion.
[0006]
[Means for Solving the Problems]
The present invention relates to a carton for storing a roll-shaped wrap film, wherein the carton is provided with a rewind preventing portion formed of a coating layer of a varnish mainly composed of an acrylic resin at a predetermined position on a front plate of the carton. Carton.
[0007]
According to the present invention, there is provided a carton for a wrap film, wherein the unwinding preventing portion is a coating layer of a varnish obtained by adding a blocking agent or the like to an acrylic varnish.
[0008]
In the present invention, the unwinding-preventing portion is a varnish coating layer having an acrylic varnish content of 95 to 99% and a blocking resistance agent content of 1 to 5%. Carton.
[0009]
[Action]
Open the carton, pinch the end of the roll-shaped wrap film, pull out the desired length, hold the wrap film between the outer front plate of the lid and the front plate of the body, cut the wrap film with the blade provided in the carton . At this time, the end of the wrap film remaining on the carton side due to the cutting of the wrap film is sandwiched between the outer front plate of the lid and the front plate of the body, and the end of the wrap film is formed by the external force applied at the time of cutting the wrap film to the rewind preventing portion. It is pressed, glued, fastened to the anti-rewind portion and does not rewind into the carton. Then, the user can easily pinch and pull out the end portion of the wrap film adhered to the rewind preventing portion at the next use.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described in detail according to one embodiment shown in the drawings. FIG. 2 is an exploded plan view showing the blank of the present embodiment, in which a front plate 1, a bottom plate 2, a rear plate 3, a cover plate 4, and an outer front plate 5 are successively provided. A folding plate 7 is connected to the upper part of the front plate 1, and an adhesive piece 6 is connected to a lower part of the outer front plate 5 via a cutting line (perforation or the like). Further, a body side forming plate 8 is continuously provided on both sides of the front plate 1, the bottom plate 2, and the rear plate 3, and a cover side forming plate 9 is provided continuously on both sides of the lid plate 4 and the outer front plate 5. Although not shown, the blade 20 is provided on the inner surface of the outer front plate 5 at a position where the blade edge protrudes from an edge of the outer front plate 5.
[0011]
A rewind prevention unit 10 is provided at the upper center of the front plate 1. The unwinding prevention unit 10 is formed by printing and drying a varnish mainly composed of an acrylic resin.
[0012]
The body side forming plate 8 and the cover side forming plate 9 of the carton blank are bonded to each other, and the bonding piece 6 is bonded to the front plate 1 to assemble a rectangular parallelepiped carton including a body and a lid. At the time of use, the bonding piece 6 is cut and removed to perform the state shown in FIG.
[0013]
The gist of the unwinding preventing portion 10 is to use a varnish mainly composed of an acrylic resin. Varnish containing acrylic resin as a main component has slight tackiness even in the applied state after printing and drying, regardless of the self-adsorption property of the wrap film. Sufficiently adheres and performs a satisfactory function as a rewind prevention function.
[0014]
As described above, the acrylic resin of the unwinding prevention part has a slight adhesive property, so if the adhesive strength is too strong, the blanks that are in contact with each other will adhere when stacked in the blank state before carton box making. That is, a so-called blocking phenomenon may occur. In order to solve this phenomenon, the present invention proposes a configuration in which an anti-blocking agent is placed in the varnish of the unwinding preventing portion.
[0015]
The anti-rewind portion in the present invention is configured to simultaneously satisfy the conflicting functions of adhesiveness to the wrap film and prevention of blocking of the carton blank by mixing the acrylic varnish and the anti-blocking agent. And the proper content ratio of the acrylic varnish and the anti-blocking agent,
・ Acrylic varnish = 95-99%
・ Blocking resistance = 1-5%
It is preferable that
[0016]
In this embodiment, an acrylic varnish is used as the acrylic varnish, and a polyethylene wax is used as the antiblocking agent. Further, in this embodiment, about 1% of an antifoaming agent (silicone) is added.
[0017]
In the configuration of the present embodiment, the adhesion state between the wrap film and the rewind preventing portion after the wrap film was cut by the operation described in the section of the operation described above was tested, and it was found that polyvinylidene chloride, polyvinyl chloride, polyethylene, and polypropylene were used. All of the wrap films manufactured by the above-mentioned method were well adhered. Further, 5000 sheets of the same carton blanks were stacked and tested for blocking after 4 days. As a result, no blocking occurred.
[0018]
For the anti-rewind portion, a varnish is applied by a gravure printing machine, and the varnish is dried by heat to form a coating layer.
[0019]
The varnish for the anti-rewind portion may be applied directly on the substrate of the carton, or may be applied on a pattern print (including overprint varnish) of the carton.
[0020]
The position, size (height, width), number, and the like of the unwinding prevention portion can be arbitrarily set as long as the portion is covered by the outer front plate of the lid on the front plate of the carton body.
[0021]
In addition to applying the varnish for the unwinding preventing portion over the entire surface with a predetermined area, each varnish may be provided in an island-like independent dot shape or in a lattice shape. As described above, by providing the non-applied portion inside the rewind preventing portion, the adhesive force of the rewind preventing portion can be adjusted in addition to the material characteristics of the varnish to be used.
[0022]
【The invention's effect】
In the present invention, since the anti-rewind portion is provided with a coating layer of a varnish mainly composed of an acrylic resin, it can be easily provided only by printing and drying. Further, since the rewind preventing portion itself has a slight tackiness, it can be well bonded regardless of the material of the wrap film.
[0023]
In addition, if necessary, a blocking resistance at the time of carton blank can be prevented by adding a blocking resistant agent in the varnish.
[Brief description of the drawings]
FIG. 1 is a perspective view of a wrap film carton of the present invention.
FIG. 2 is a plan view of a blank of the carton for a wrap film of the present invention.
[Explanation of symbols]
1, front plate 2, bottom plate 3, rear plate 5, cover plate 6, outer front plate 10, rewind prevention unit

Claims (2)

In a carton for storing a roll-shaped wrap film, a carton provided with an anti-rewind portion formed of a coating layer of a varnish mainly composed of an acrylic resin at a predetermined position of a front plate of the carton,
The unwinding prevention part is a coating layer of a varnish in which the content of the acrylic varnish is 95 to 99% and the content of the antiblocking agent is 1 to 5%, in which a blocking agent is added to the acrylic varnish. A carton for wrap film. The carton for a wrap film according to claim 1, wherein the antiblocking agent is a polyethylene wax.

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