JPH11292085A - Cutter-equipped carton box and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heighten rigidity at a face on which a cutter is formed without allowing the cutter part to be bent extremely and to ensure satisfactory durability and sharpness for the cutter itself by a method wherein an embossment is applied along the cutter to the inside of the face whereon the sawtoothed cutter is formed. SOLUTION: A cutter 4 is such that is formed in a sawtoothed shape at the edge of a main body front face piece 5 of an unfolded carton box 2. A reinforcing embossment 3 is applied to the inside of the main body front face piece 5 on which the cutter 4 is formed. The reinforcing embossment 3 may be made either in the inwardly indented form or the outwardly indented form. However, the inwardly indented form is effective against tensile force applied on cutting of a sheet such as wrapping film. The depth of the reinforcing embossment 3 is desirable to be 50-150% of the thickness of a carton blank, and the distance from the sawtoothed cutter 4 to the reinforcing embossment 3 is desirable to be as short as possible and it is to be desired that the distance shall be 3-10 mm from the sawtooth bottom.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper box for storing roll-shaped sheets such as wrap film, aluminum foil, etc., wherein the saw-shaped cutter box for cutting the drawn-out sheet is provided. And its manufacturing method.

[0002]

2. Description of the Related Art Conventionally, there are two types of paper boxes with a cutter, a so-called box type and a flap type, depending on the position where the cutter is mounted and the shape of the lid.

A box-shaped paper box with a cutter has a cutter at the lower end of a front piece of a lid formed in a box shape, and a flap-type paper box with a cutter has a cutter at the upper end of a front piece of the main body. And the lid is formed in a flap shape.

[0004] In any of these embodiments, since a separate metal cutter or the like having a relatively high rigidity has been conventionally bonded or the like, a decrease in sharpness due to bending of the cutter portion has not been a serious problem.

However, in the case of a paper box with a cutter provided with a metal cutter separate from the paper box, it is necessary to remove and discard the cutter portion when disposing of the paper box. And paper cutters are being used. Further, since the process of attaching these separately formed cutters to the paper box is complicated, a method of applying or impregnating the paper box with a curable resin to reinforce the paper box, and making one edge of the paper box a saw blade-shaped cutter is also used. It is becoming.

The above-mentioned resin cutter, paper cutter, and cutter formed on the paper box itself are not generally high in rigidity like metal cutters, but are used when cutting a sheet such as a wrap film. However, there is a problem that the cutter itself is largely bent, and the cutter itself cannot exhibit its original sharpness.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and in particular, improves the sharpness of a paper box with a cutter employing the above-mentioned cutter instead of a metal cutter. The purpose is to:

[0008]

According to the present invention, there is provided:
A paper box with a cutter having a saw-shaped cutter, wherein a paper box with a cutter is characterized in that embossing is performed along the cutter in a surface on which the saw-shaped cutter is formed. is there.

Further, the present invention provides a method for manufacturing a paper box with a cutter in which a saw-shaped cutter is formed on a paper box. A method of manufacturing a paper box with a cutter, characterized by punching out a box.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A paper box with a cutter according to the present invention will be described with reference to FIGS.

FIG. 1 shows an example of a flap-type paper box with a cutter. FIG. 1 (a) is a development view, FIG. 1 (b) is a perspective view of an assembled state, and FIG. 1 (c) is FIG. 1 (b). 3 is a cross-sectional view taken along line AA ′ of FIG.

In FIG. 1, 2 is an unfolding box, 3 is a reinforcing emboss formed by embossing, 4 is a saw blade-shaped cutter, 5 is a front piece of the main body, 6 is a bottom piece of the main body, 7 is a rear piece of the main body, 8 Is a main body side piece, 9 and 10 are main body side inner pieces, 11 is a lid piece, and 12 is a lid front piece extending from the front end of the lid piece 11.

[0013] Incidentally, from the development box 2 of FIG.
Can be assembled on a sack machine or the like in the same manner as in the prior art.

The cutter 4 is formed at the edge of the front piece 5 of the main body. The cutter 4 may be one in which the edge of the front piece 5 of the main body is formed in a saw blade shape, or one in which cutters made of various materials which are separately prepared are attached. However, the present invention is extremely effective especially when the rigidity of the cutter itself is not so high, such as when a saw-tooth cutter is formed by processing the paper box itself or when a separate paper cutter is attached. is there.

The greatest feature of the present invention is that a reinforcing embossing 3 is provided along the cutter 4 in the plane of the main body front piece 5 on which the cutter 4 is formed. It can be formed by embossing the piece 5.

The provision of the reinforcing embossing 3 increases the rigidity of the main body front piece 5, and the reinforcing embossing 3 provided along the cutter 4 as in the present invention provides a tensile force for cutting a sheet such as a wrap film. Thereby, the portion of the cutter 4 can be prevented from being largely bent in the direction of the arrow in FIG. 1C, and the sharpness inherent to the cutter 4 itself can be sufficiently exhibited.

The reinforcing embossing 3 may be concave on the inside or concave on the outside. However, as shown in FIG. More effective against the tensile force of In the case where two reinforcing embossments 3 are provided as shown in FIG. 1, one may be concave inward and the other may be concave outward.

The depth of the reinforcing emboss 3 (depth of the concave portion)
The thickness is preferably 50% to 150% of the thickness of the base paper. If the depth of the reinforcing embossing 3 is less than 50% of the thickness of the base paper, the effect of embossing is small, and if it exceeds 150% of the thickness of the base paper, cracks and the like are likely to occur around the reinforcing embossing 3 and sufficient rigidity reinforcement is achieved. May not be obtained.

The distance from the saw blade-shaped cutter 4 to the reinforcing embossing 3 is desirably as short as possible, preferably about 3 mm to 10 mm from the blade valley, and particularly preferably about 3 mm to 5 mm from the blade valley. . If this distance exceeds 10 mm, bending is likely to occur between the cutter 4 and the reinforcing emboss 3, and a sufficient effect by embossing may not be obtained.

The shape of the reinforcing emboss 3 and the range to be provided can be appropriately designed within a range that can achieve the object of the present invention.

2 to 5 show another example of the reinforcing embossing 3. FIG. 2 and 3 are similar to the example of FIG.
FIGS. 4 and 5 show an example in which two rows of reinforcing embossments 3 are provided.
Is an example in which one reinforcing emboss 3 is provided.

As shown in FIGS. 2 and 3, the reinforcing emboss 3 is not necessarily provided continuously along the cutter 4, but is divided into several parts in the direction along the cutter 4. There may be. Further, as shown in FIGS. 2 to 5, it is preferable that the reinforcing embossing 3 is provided along the cutter 4 over substantially the entire length thereof. In addition, it is also preferable to design the shape of the reinforcing embossing 3 so that the bending near the middle of the cutter 4 can be reduced.

The reinforcing embossing provided in the present invention is particularly effective for the flap-type paper box with a cutter illustrated in FIGS. 1 to 5 where the rigidity of the cutter 4 tends to be weak. Can also be applied.

FIG. 6 shows an example of a box-type paper box with a cutter. FIG. 6 (a) is a developed view, and FIG. 6 (b) is a perspective view of an assembled state. 6, the same parts as those in FIG. 1 are denoted by the same reference numerals, 13 is a lid side piece, and 14 is a lid side inner piece.

The cutter 4 is formed in a direction crossing an intermediate portion of the cover front piece 12. Even if the cutter 4 is formed by processing the lid front piece 12 itself,
It may be provided with cutters of various materials created separately.

FIG. 6 shows an example in which the cutter 4 is formed by processing the cover front piece 12 itself, specifically, punching the cover front piece 12 itself having a predetermined portion reinforced with a hardener or the like into a saw blade shape. is there. The saw-shaped punching is not performed as being continuous in the direction crossing the lid front piece 12, but is performed partially leaving the non-punched portion 15.

The cover front piece 12 overlaps the main body front piece 5, and the front end (lower end) of the cover front piece 12 is partially joined to the lower end of the main body front piece 5 by a dotted portion 16 and peeled off. Assembled where possible. Therefore, this lid front piece 1
2 is peeled off along the saw-bladed punching portion while separating the non-punched portion 15, and simultaneously with opening the paper box with the cutter, the tip of the saw-bladed cutter 4 is attached to the lower end of the lid front piece 12. Will be exposed. Therefore, since the cutter 4 before opening is a mere saw blade-shaped incision and the tooth tip is not exposed, there is no damage to the fingers and the cutter 4 itself is not damaged. The tip can be exposed.

In the box-type paper box with a cutter as described above, the lid front piece 12 on which the cutter 4 is formed is also provided.
By providing the reinforcing embossment 3 along the cutter 4 in the plane of the surface, the rigidity of the lid front piece 12 can be increased, and similarly to the above, the cutter 4 is formed by the tensile force when cutting a sheet such as a wrap film. Portion can be prevented from being greatly bent, and the sharpness inherent in the cutter 4 itself can be sufficiently exhibited. The shape of the cutter 4 and the range to be provided can be appropriately designed within a range in which the object of the present invention can be achieved similarly to the above-described example.

Next, a method for manufacturing a paper box with a cutter according to the present invention will be described with reference to FIG.

In FIG. 7, reference numeral 1 denotes base paper (cardboard) from which the developing box 2 shown in FIG.
The necessary printing or the like is performed in accordance with the scheduled punching position. Further, four unfolding boxes 2 are punched out in a state of being arranged in two rows two by two.

In the manufacturing method of the present invention, a predetermined position along the cutter forming portion 4 ′ of the base paper 1 is embossed before punching out the development box 2, and the reinforcing embossing 3 is applied.
In the case where a saw blade-like cutter is formed by processing the paper box itself, for example, a cutting agent is applied and impregnated and cured, or a resin tape is attached to the cutter forming portion 4 'before punching out the development box 2. If so, a strong cutter can be formed at the same time as punching.

The above-mentioned embossing is preferably performed in a heating state at 50 ° C. to 300 ° C. in order to evaporate the moisture contained in the base paper 1 and to provide a stronger reinforcing embossing 3. Further, it is preferable to adjust the pressurizing pressure so that the thickness of the reinforcing embossed portion 3 is about 90% to 70% of the thickness of the base paper 1.

If the above-mentioned embossing is performed on the base paper 1 flowing as a long object drawn from the roll between the printing units or in the final step of printing, continuous processing is easy. However, it can also be performed on the base paper 1 cut into a fixed size as shown in FIG.

By punching out the developing box 2 from the base paper 1 provided with the reinforcing embossing 3 as described above, the developing box 2 as shown in FIG. 1A is obtained. Hereinafter, as described above, by using a sack machine, etc.,
Assemble a paper box with a cutter as shown in FIG.
Note that a box-type paper box with a cutter as shown in FIG. 6 can also be manufactured in the same procedure as described above.

[0035]

The present invention is as described above, and has the following effects.

(1) According to the paper box with a cutter of the present invention,
By embossing the surface on which the cutter is formed along the cutter portion, the rigidity of the surface can be increased, and the cutter portion does not bend significantly when cutting a sheet such as a wrap film, The sharpness originally possessed by the cutter itself is sufficiently exhibited, and good durability and sharpness are obtained.

(2) According to the method of manufacturing a paper box with a cutter of the present invention, the surface on which the cutter is formed can be reinforced in a series of manufacturing steps without adding a separate reinforcing member, and the efficiency is improved. Can do good production.

[Brief description of the drawings]

FIG. 1 is a view showing an example of a paper box with a flap type cutter according to the present invention.

FIG. 2 is a diagram showing another example of a paper box with a flap type cutter according to the present invention.

FIG. 3 is a view showing another example of a paper box with a flap type cutter according to the present invention.

FIG. 4 is a view showing another example of a paper box with a flap type cutter according to the present invention.

FIG. 5 is a view showing another example of a paper box with a flap type cutter according to the present invention.

FIG. 6 is a view showing an example of a box-shaped paper box with a cutter according to the present invention.

FIG. 7 is a plan view showing an example of base paper before punching out a development box for assembling the paper box with cutter of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base paper 2 Unfolding box 3 Reinforcement emboss 4 Cutter 4 'Cutter forming part 5 Main body front piece 6 Main body bottom piece 7 Main body back piece 8 Main body side piece 9 Main body side inner piece 10 Main body side inner piece 11 Lid piece 12 Lid front piece 13 lid side piece 14 lid side inner piece 15 non-punched part 16 pointed part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsutomu Ichikawa 4-14-12 Koishikawa Bunkyo-ku, Tokyo Kyodo Printing Co., Ltd. (72) Inventor Masatake Sakamoto 4- 14-12 Koishikawa Bunkyo-ku Tokyo, Kyodo Printing Inside the corporation

Claims (2)

[Claims] 1. A cutter-equipped paper box having a saw-shaped cutter, wherein a surface on which the saw-shaped cutter is formed is embossed along the cutter. paper box. 2. A method for manufacturing a paper box with a cutter in which a saw blade-shaped cutter is formed on a paper box, after embossing along a cutter forming portion of a base paper for punching a development box,
A method for manufacturing a paper box with a cutter, comprising punching a development box from base paper.