JPH1143141A - Wrap carton and method for producing cutter to be attached to the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the stiffness of a cutter itself, sharpness in the cutting of wrapping film, and its durability, by having as a base a laminate body comprising a polyethylene terephthalate sheet and a polypropylene synthetic paper. SOLUTION: A cutter 8 has a base which is a laminate body comprising a polyethylene terephthalate sheet 9 and a polypropylene synthetic paper 10. In the thickness of the laminate body, it is ideal that the thickness of the polyethylene terephthalate sheet 9 be 100-300 μm, the thickness of the polypropylene synthetic paper 10 be 150-300 μm, and the thickness of the layer of the laminate body be not less than 300 μm. The base of the cutter is composed by polymerizing and integrating both of them via adhesive, for example urethane adhesive. Also, by using a white polyethylene terephthalate sheet, as the polyethylene terephthalate sheet 9, adherence to wrapping film decreases and, therefore, handling further improves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottomed long box-shaped wrap carton with a cutter for storing a roll of wound wrap film, drawing out a required length, and cutting and taking out the roll. The present invention relates to a method for manufacturing a cutter to be attached.

[0002]

2. Description of the Related Art Generally, a metal material is known as a material of a cutter to be attached to a drawer of a wrapped carton having a bottomed long box shape. However, it is not reasonable to use metal products because they have problems in safety during use, and it is necessary to separate the used cutters when sorting them. For example, it is known that at least two pieces of base paper having a thickness of 300 μm or more via an adhesive are used as a base paper for a cutter (Japanese Patent Laid-Open No. 6-143523). Gazette).

[0003] Also, a plastic sheet made of hard vinyl chloride, polypropylene, polyester (PET), ABS, high-density polyethylene, or the like, or a paper-like sheet impregnated with a resin is formed into a saw blade shape (Japanese Utility Model Application). 2-8
No. 3229). Furthermore, the cutting edge is PVC or PE
It is also known that they are formed by T (Japanese Patent Laid-Open No. 5-16)
No. 2743).

[0004]

However, paper made from paper as disclosed in JP-A-6-143523 is not sufficient in terms of sharpness and durability, and tends to have insufficient hardness. In some cases, the cutting edge was delaminated with use. 2-8322
No. 9 discloses that the saw blade itself has insufficient rigidity and is easily bowed as a whole, which is inadequate in terms of cutability and durability of the sheet material. Not practical.

[0005] Furthermore, the blade used in the blade disclosed in Japanese Patent Application Laid-Open No. 5-162743 has a problem of environmental pollution because harmful gas is generated from PVC at the time of combustion and disposal after use. When used alone, the rigidity is insufficient, and the above-mentioned actual opening flat 2-8 is used.
As in the case of Japanese Patent No. 3229, not only is the sheet-like material inferior in cuttability, but also the blade edge is easily bent or buckled by repeated use, and there is a problem in durability.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention solves the above-mentioned various problems in the prior art and provides a low-cost, simple disposal of used cutters and excellent sharpness and durability. It is intended to provide a wrap carton equipped with the most practical cutter, specifically, formed in a long box shape for storing a wrap film wound in a roll shape, and moreover, a sheet A carton provided with a cutter for cutting a wrap film facing a drawer port, wherein the cutter is based on a laminate of a polyethylene terephthalate sheet and a synthetic paper made of polypropylene.

The present invention also relates to a carton formed in a long box shape for storing a wrap film wound in a roll shape, and further comprising a wrap film cutting cutter facing a drawer opening of the wrap film. Also, the present invention relates to a wrap carton, wherein the cutter is based on a laminate of a white polyethylene terephthalate sheet having low adhesion to a wrap film and a synthetic paper made of polypropylene.

Further, according to the present invention, the thickness of the polyethylene terephthalate sheet or the white polyethylene terephthalate sheet constituting the cutter as a laminate and the synthetic paper made of polypropylene is 100 μm to 300 μm.
The present invention also relates to a wrap carton, wherein the thickness of the lap carton is 150 μm to 300 μm, and the layer thickness of the laminate is 300 μm or more.

Further, in the present invention, the carton preferably has a front plate centered on a bottom plate, a rear plate, a lid top plate, and a lid laminated plate connected to the rear side, and side plates on the left and right side surfaces. Wherein the cutter is attached to the tip of the lid stack such that the synthetic paper made of polypropylene is positioned on the lid stack.

Further, the present invention relates to a wrap film cutter attached to a wrap film drawer opening of a wrap carton formed in a long box shape for storing the wrap film wound in a roll shape, The cutter is characterized in that a polyethylene terephthalate sheet or a white polyethylene terephthalate sheet and a polypropylene synthetic paper are laminated via an adhesive, and the tooth is cut from the polypropylene synthetic paper side. It also relates to the manufacturing method.

[0011] The cutter used in the carton of the present invention is based on a laminate in which a polyethylene terephthalate sheet and a polypropylene synthetic paper are superposed on each other, so that the hardness of the polyethylene terephthalate sheet and the rigidity of the polypropylene synthetic paper are improved. Combined and sharp,
In addition, a cutter having excellent durability can be provided.
In this case, when a white polyethylene terephthalate sheet is used as the polyethylene terephthalate sheet, the cutter attached to the carton has low adhesion to the wrap film, and the handleability is further improved.

The cutter is attached to the top of the lid stack so that the side of the synthetic paper made of polypropylene is positioned on the lid stack, so that the polyethylene terephthalate sheet or the white polyethylene terephthalate sheet having higher hardness can be provided. The side that comes into contact with the wrap film at the time of use has good sharpness, and since it is supported by a highly rigid synthetic paper made of polypropylene, it has excellent durability.

[0013] The cutter is formed by laminating a polyethylene terephthalate sheet or a white polyethylene terephthalate sheet and a synthetic paper made of polypropylene via an adhesive, and cutting the tooth form from the synthetic paper made of polypropylene. Since the tooth mold faces the polyethylene terephthalate sheet or white polyethylene terephthalate sheet, which has excellent hardness, by attaching this side to the wrap film during use, the sharpness of the cutter is further improved, and the durability is further improved Performance can also be improved.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the specific contents of the present invention will be described with reference to the embodiment shown in the drawings. Reference numeral 1 denotes an example of a wrap carton for storing a roll R of a wrapped film. A front plate 3 is provided on the front side with the bottom plate 2 as a center, and a rear plate 4, a lid top plate 5 and a lid laminated plate 6 are respectively provided continuously on the rear side, and side plates 7 are provided on the left and right side surfaces.
In addition, at the tip of the lid stacking plate 6 described above, a cutter 8 for cutting the wrap film is placed inside the lid stacking plate 6 with the cutter 8 facing the drawer opening of the wrap film. At least 100 kg / g by an adhesive or by using a pressurizing means such as a known metal edger.
Press-sealing with a pressure of at least ² cm ² is applied and attached by press-fitting, and this carton blank is assembled to form a long box-shaped wrap carton 1.

Further, a cutter 8 for cutting a wrap film.
The base material is a laminate of a polyethylene terephthalate sheet 9 and a synthetic paper 10 made of polypropylene. The thickness of the laminate used in this case is such that the polyethylene terephthalate sheet 9 has a thickness of 100 μm to 300 μm.
μm, polypropylene synthetic paper 10 is 150 μm-30
It is ideally 0 μm and the layer thickness as a laminate is 300 μm or more, and both are polymerized and integrated with each other via, for example, a urethane-based adhesive to constitute the base material of the cutter. .

In this case, when the polyethylene terephthalate sheet 9 to be laminated and polymerized is made of a white polyethylene terephthalate sheet, the adhesion to the wrap film is reduced, which is more advantageous in terms of handleability. White polyethylene terephthalate sheet contains fine powders of titanium dioxide, zinc sulfide, barium sulfide, zirconium dioxide, aluminum oxide, kaolin, talc, mica, silica,
One or more of a matting agent such as calcium carbonate and a white pigment are used. The average particle size is 1.0 to 5.0 μm. If the content is too small, the wrap film adheres to the cutter when used. However, the handleability is deteriorated. On the contrary, if the amount is too large, the polyethylene terephthalate sheet 9 becomes brittle. Therefore, the preferred content is preferably in the range of 0.5 to 2.5 parts by weight.

Further, with respect to the synthetic paper 10 made of polypropylene, if the thickness is less than 250 μm, the rigidity is poor, and if it exceeds 450 μm, cracks easily occur.
It is best to be within the range of 0 μm to 300 μm.
Further, the thickness of the laminated body of the polyethylene terephthalate sheet or the white polyethylene terephthalate sheet and the synthetic paper made of polypropylene is preferably 300 μm or more, since if too thin, the sharpness and durability are poor.

The polyethylene terephthalate sheet 9
Alternatively, when forming a tooth pattern on a cutter 8 in which a white polyethylene terephthalate sheet and a polypropylene synthetic paper are laminated via a urethane-based adhesive and attaching the same to a carton, the sharpness with respect to the wrap film is improved. Then, the tooth mold 11 is cut by a metal edger, and as shown in FIG. 1, as shown in FIG. The tip of the cutter 8 is slightly warped inward, and the polyethylene terephthalate sheet or the white polyethylene terephthalate sheet, which is more excellent in hardness, is more likely to come into contact with the wrap film when used, so that the sharpness is further improved, and the durability is further improved. Be looked at.

[0019]

EXAMPLES White polyethylene terephthalate sheet having a thickness of 100 μm (trade name “E-22” manufactured by Toray Industries, Inc.)
Then, using a urethane-based adhesive, a synthetic synthetic paper made of polypropylene having a thickness of 300 μm (manufactured by Oji Yuka Synthetic Paper Co., Ltd., trade name “Yupo FRG300”) was bonded to form a base material for the cutter. An adhesive (manufactured by Dainippon Ink and Chemicals, Inc., trade name "Didate Tack 1014D") is applied to the surface of the polypropylene synthetic paper in advance, and the polypropylene synthetic paper is cut into cut teeth by a metal edger from the polypropylene synthetic paper side, and completed. The cutter was attached to the inside of the wrap carton cover with ultrasonic waves with the tooth tip facing the wrap film take-out opening.

Comparative Example 1 A white polyethylene terephthalate sheet having a thickness of 100 μm was preliminarily bonded with an adhesive (“Didate Tack 101” manufactured by Dainippon Ink and Chemicals, Inc.).
4D "), and cut it into cut teeth with a metal edger.
Attached inside the cover of the lap carton.

[Comparative Example 2] An adhesive (manufactured by Dainippon Ink and Chemicals, Inc.) was previously applied to a synthetic paper made of polypropylene having a thickness of 300 μm (made by Oji Yuka Synthetic Paper Co., Ltd., trade name “Yupo FRG300”) ("Didate Tack 1014D") was applied and cut into cut teeth with a metal edger. At the same time, the completed cutter was attached to the inside of the cover of the wrap carton by ultrasonic waves.

Using the wrapped carton prepared in the above Examples and Comparative Examples, a cutting test was conducted on a commercially available wrap film made of polyvinylidene chloride. While there was no hindrance, the durability and the cutting properties were both satisfactory, whereas those of Comparative Example 1 were liable to tear during processing of the cut teeth, and had a problem in terms of workability. In addition, even if it was successfully processed, the rigidity of the cutting teeth was insufficient, and the lid of the wrap carton often broke during use. Furthermore, in the case of Comparative Example 2, as the use was repeated, delamination occurred at the tooth tip from about more than about 100 cuts, so-called scorching began to be noticeable, and the durability was insufficient.

In the above embodiment, an experiment was conducted on the sharpness of cooking paper or wrap film as a cutter due to the difference in thickness between the white polyethylene terephthalate sheet 9 constituting the cutter 8 and the synthetic paper 10 made of polypropylene. We got the result as it appeared.

According to the above experimental results, Δ △: white polyethylene terephthalate 9 having a thickness of less than 100 μm and a thickness of 300 μm or less as a laminate (4), and (5) having a thickness of 300 μm or less as a laminate Because both papers are inferior in sharpness, in the case of cooking paper, the cooking paper tears during cutting, and wrap film (polyvinylidene chloride) that is not cut along the teeth
In case (1), it was found that a certain amount of force was required for cutting, which caused problems such as deformation of the carton itself.

Therefore, the polyethylene terephthalate sheet 9 needs 100 μm or more to obtain a sufficient hardness, and the polypropylene synthetic paper 10 requires at least 150 μm to obtain a sufficient rigidity.
It is clear that the above is necessary, and that the total thickness including both is 300 μm or more. Therefore, it became clear that as long as this condition is satisfied, more sufficient cutting performance can be maintained even after about 200 cuts.

[0026]

As described above, the present invention is a cutter for cutting a wrap film which is formed in a long box shape for storing a wrap film wound in a roll shape, and which has a blade edge facing a draw-out opening of the wrap film. In the carton provided with the above, since the cutter is based on the laminate of the polyethylene terephthalate sheet and the synthetic paper made of polypropylene, the rigidity of the cutter itself and the sharpness and durability of the wrap film are remarkably improved. In addition, there is no generation of harmful gas upon combustion and disposal after use, and there is no problem of environmental pollution.

Further, since a laminate of a white polyethylene terephthalate sheet and a synthetic paper made of polypropylene is used as a base material of a cutter attached to a wrap carton, adhesion to a wrap film is low and handleability is excellent. Further, when forming the tooth mold on the cutter base material, a polyethylene terephthalate sheet or a white polyethylene terephthalate sheet and a polypropylene synthetic paper are laminated via a urethane-based adhesive, and this is laminated with a metal edger from the polypropylene synthetic paper side. Since the tooth mold is cut, defects such as cracking and cracking of the cutter base material do not occur.

[Brief description of the drawings]

FIG. 1 is a sectional view of a wrap carton showing an embodiment of the present invention.

FIG. 2 is an enlarged partial side view of a cutter used in FIG. 1;

FIG. 3 is a result table of experimental results showing the sharpness of a cutter used in the present invention.

[Description of Signs] 1 Wrap carton 2 Bottom plate 3 Front plate 4 Back view 5 Lid top plate 6 Lid overlap plate 7 Side plate 8 Cutter 9 Polyethylene terephthalate sheet 10 Polypropylene synthetic paper 11 Tip tooth mold

Claims (5)

[Claims] 1. A carton formed in a long box shape for storing a wrap film wound in a roll shape, and further comprising a wrap film cutting cutter facing a drawer opening of the wrap film. A wrap carton comprising a laminate of a polyethylene terephthalate sheet and a synthetic paper made of polypropylene as a base material. 2. A carton formed in a long box shape for storing a wrap film wound in a roll shape, and further comprising a wrap film cutting cutter facing a drawer opening of the wrap film. A wrap carton comprising a laminate of a white polyethylene terephthalate sheet having low adhesion to a wrap film and a synthetic paper made of polypropylene as a base material. 3. The thickness of the polyethylene terephthalate sheet or the white polyethylene terephthalate sheet and the synthetic paper made of polypropylene constituting a cutter as a laminate is 100 μm to 300 μm for the former and 15 μm for the latter.
0 μm to 300 μm, and the layer thickness of the laminate is 300 μm
The wrap carton according to claim 1 or 2, wherein: 4. The carton has a front plate centered on a bottom plate, a front plate on the front side, a back plate, a lid top plate and a lid laminated plate on the rear side, and side plates provided on left and right side surfaces, respectively. The cutter is attached to the tip of the lid stack so that the synthetic paper made of polypropylene is positioned on the lid stack. Item 4. A wrap carton according to item 3. 5. A wrap film cutter which is attached to a wrap film drawer opening of a wrap carton formed in a long box shape for storing the wrap film wound in a roll shape, wherein the cutter is provided. A method for manufacturing a cutter, comprising: laminating a polyethylene terephthalate sheet or a white polyethylene terephthalate sheet with a polypropylene synthetic paper via an adhesive, and cutting the dental mold from the polypropylene synthetic paper side.