JPH0418248A - Carton for wrapping film - Google Patents

Abstract

PURPOSE:To prevent the end of a wrapping film which works at a tab from being rewound by making it join to a re-winding preventive layer made of a gloss coat layer by a method wherein on a side wall at a position where a wrapping film is cut, a re-winding preventive layer is provided, and the re- winding preventive layer is made of a gloss coat layer of an ultraviolet curing resin. CONSTITUTION:A carton for wrapping film consists of a storage part 2 for a wound wrapping film 1 and a lid body 3 connected to the storage part 2. At the end of the lid body 3, a cutting blade 4 is provided, and in addition, on a side wall 5 of the storage part 2, where the wrapping film 1 is cut, a re-winding preventive layer 6 is provided. The re-winding preventive layer 6 is made of a gloss coat layer of an ultraviolet curing resin. Since the gloss coat layer does not have tackiness line adhesive layers, even when carton blanks are kept stacked at the time of box making, etc., blocking phenomenon is not generated, and a carton box can be manufactured by a sack pasting machine as it is. By using a polyfunctional acrylic resin with less molecular weight, the gloss coat layer becomes flexible, and the adherence strength of the wrapping film becomes favorable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wrap film carton that is used by cutting a wrap film wound around a paper tube or the like.

[Conventional technology]

- What is called wrap film in JIEt is a polyvinylidene chloride synthetic resin film (for example, Asahi Kasei Co., Ltd.)
Saran Wrap), a long film wrapped around a paper tube and stored in a paper carton with a cutting blade. This wrap film is used while stored in the carton, and its edges are always kept sticking out of the carton.
Whenever necessary, the wrap film is picked up at the end, pulled out, the wrapped wrap film in the carton is rotated, the desired length is pulled out, and the pulled out portion is cut and separated using the cutting blade for use.

However, if the cut end is rewound into the carton and attached to the surface of the stored rolled film, since the film itself is transparent,
Due to its adhesiveness, it was difficult to find the end and pull it out for next use. In order to prevent this unwinding, a wrap film carton has been developed in which a side wall of the carton is provided with an adhesive layer or an unwinding prevention section made of adhesive tape. (For example, see Utility Model Publications No. 55-53459 and No. 61-22823) [The invention attempts to solve the problem! (lift) By providing the anti-unwinding layer on the side wall in this way, the end of the wrap film cut with the cutting blade is adhesively fixed to the anti-unwinding layer.
It is possible to prevent the film from coming into close contact with the wound film.

However, when providing an anti-rewinding layer made of a sticky adhesive layer or adhesive tape as described above, it cannot be provided in-line at the same speed as printing during carton manufacturing, so it is inevitable that the layer will be separated after printing. It has to be installed in the process, which increases the number of work steps, reduces efficiency, and increases the price.

In addition, since the unwinding prevention layer has high adhesion to paper and metal, it was not possible to apply 6 g of sacking to produce cartons, and the manufacturing process was left unfinished.

Therefore, an object of the present invention is to provide a wrapping film carton provided with an anti-rewinding layer.In manufacturing the carton, the anti-rewinding layer can be provided during the printing process, and the carton can be manufactured using a sack pasting machine. An object of the present invention is to provide a carton for lamp film.

In addition, lamp film cartons are often printed on at least one side, so it is possible to provide a rewind prevention layer in the same process as this printing process, and it is also possible to provide the rewind prevention layer using the normal printing method. It is an object of the present invention to provide a wrapping film carton that can be provided by an offset method or a gravure method.

[Means to solve the problem]

The present invention is a wrap film carton that has a cutting blade for storing a wound wrap film and is provided with an anti-unwinding layer on the side wall at a position where the wrap film is cut, and the anti-unwinding layer is made of ultraviolet curing resin. This wrap film carton is characterized by having a cross-coat layer.

As the ultraviolet curable resin used for this unwinding prevention layer, an acrylic resin, particularly a polyfunctional acrylic resin with a small molecular weight, is preferable.

[Effect]

Since the unwinding prevention layer is a cross-coat layer made of an ultraviolet curable resin, the pulled-out film adheres tightly to the film and can be prevented from being rewound into the carton.

In addition, since the anti-rewinding layer is made of ultraviolet curable resin, it can be applied at the same time as printing on the carton, and since the anti-rewinding layer is non-adhesive, it can be used with a sack pasting machine for making boxes. can be used as is.

Furthermore, as an ultraviolet curable resin used for the unwinding prevention layer,
By using an acrylic resin that is polyfunctional and has a small molecular weight, the cross coat layer becomes soft and the adhesion strength of the wrap film is improved.

〔Example〕

FIG. 1 is a perspective view showing an example of a wrapping film carton according to the present invention, which comprises a storage section 2 for storing a rolled lamp film 1, and a lid 3 connected to the storage section 2. This wrap film carton is provided with a cutting blade 4 at the end of the lid 3, and furthermore, a rewind prevention N6 is provided on the side wall 5 of the storage section 2 where the wrap film 1 is to be cut.

This unwinding prevention layer 6 is made of a cross-coat layer of ultraviolet curable resin, and this cross-coat layer may be provided directly on the side wall or may be provided via an anchor neat layer.

Thereafter, various materials shown in Table 1 were applied as an anti-rewinding layer as shown in the sample shown in FIG. 2, and the adhesion to polyvinylidene chloride film and polyvinyl chloride film was tested.

The base material used in the test was paper with the printing shown in Table 2.

In Table 1 above, (0) indicates that the printing layer was provided on the base material by the offset method, and (G) the gravure method.

Further, PVC represents polyvinyl chloride, and PVDC represents polyvinylidene chloride.

*1 represents Unicure #16 made by Godo Ink ■, which was anchor-coated with Godo Ink-UV sealer.

82 is a resin whose main component is an acrylic polyfunctional monomer or oligomer, and represents Daicure Coat #95o manufactured by Dainippon Ink and Chemicals.

*3 Toyo Ink Manufacturing Co., Ltd. FD Calton Px4 Toyo Ink Manufacturing Co., Ltd. Aqua GEM *5 Toyo Ink Manufacturing Co., Ltd. FDPAK505) 1 *6 Toyo Ink Manufacturing Co., Ltd. Y
Represents u202.

Next, the content of the monomer oligomer in the UV-curable polyacrylic resin used in E and F in Table 1 and the adhesion between the PVC film and the PVDC film were measured.

The results are shown in the graph of FIG.

As described above, the UV-curable polyacrylic resin has excellent adhesiveness, and is particularly preferably polyfunctional and has a small molecular weight.

〔Effect of the invention〕

The present invention has the above-mentioned structure, and since a cross coat layer made of an ultraviolet curable resin is provided on the side wall of the carton for wrapping film at least at the position where it is pulled out and cut, the edges of the film are The portion of the carton that becomes the grip portion is in close contact with the unwinding prevention layer made of the cross coat layer of the carton, thereby preventing it from being rewound.

In addition, since the cross coat layer is not sticky like conventional adhesive layers, it does not cause blocking even if carton blanks are piled up during box manufacturing, and can be manufactured using a sack pasting machine as is. . Furthermore, since printing can be performed at the same speed as printing on general carton base materials, there are various advantages such as being able to print on the same line as carton base materials.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the carton of the present invention, and FIG.
The figure is an explanatory diagram of the sample used for testing the adhesion of the film, and FIG. 3 is a graph showing the relationship between the monomer oligomer content of the ultraviolet curable polyacrylic resin and the adhesion. 1... Wrap film 2... Storage section 3... Lid body 4... Cross section blade 5... Side wall 6... Unwinding prevention layer Fig. 3

Claims (1)

[Claims] (1) A wrap film carton that has a cutting blade for storing the wound wrap film and is provided with an anti-unwinding layer on the side wall at the position where the wrap film is cut, and the anti-unwinding layer is made of ultraviolet curable resin. A wrap film carton featuring a cross coat layer.