JPH06263142A - Carton for wound film - Google Patents

Abstract

PURPOSE:To increase the tearing force transmitted to the film, relating to a long carton from which a roll of film such as wrapping film is drawn out to a required length and cut off, by providing a cutting means from the angle, which is between a lateral side and the forward end of a flap-shaped cover, and along the lateral side. CONSTITUTION:A carton is formed long toward the lateral ends as a whole with the front side 1, bottom side 2, and rear side 3 connected at longitudinal edge-forming lines and with the two lateral ends fixed by square side pieces 4. A lid-forming side 5 extends from the upper end of the rear side 3 and has at its forward end a flap-shaped cover 6 extending from the end of the lid- forming side 5 and overlapping the front side 1. The flap-shaped cover 6 terminates at the forward end 7 and the end sides 8 with angular corners 9 therebetween; each of the end sides 8 is slanted toward the forward end 7, making the flap-shaped cover 6 narrower in breadth toward the forward end; therefore, each of the angular corners 9, when the film 10 in a roll is drawn out, comes on the inner side of the side edge 11 of the film. At the end of the flap-shaped cover 6 from the angular corner 9 and along the end side 8 some abrasive 12 is attached as a cutting means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll, wound film carton which is safe, easy to handle and sharp.

[0002]

2. Description of the Related Art Conventionally, a wrapping film, a winding film such as an aluminum foil, is wound around a paper tube, stored in a horizontally long paper box, and unwound the required amount from the end, and a metal saw blade attached to the paper box,
It has been used by cutting it with a cutting means such as paper which is hardened by impregnating it with abrasive grains and resin. The part to which the cutting means is attached is generally a cover piece, the front end of the front plate, or a ridge part formed by the front plate and the bottom plate. When the film is stretched by applying a cut end in the longitudinal direction or a ridgeline in the longitudinal direction of the paper box such as the tip of the cover lid or the front plate, when the film is pulled and bent, an acute angle bends, and if there is a cutting means at this part. , The film is easily cut. That is, it is a preferable site with high cleavage efficiency.

[0003]

However, when the lid is opened and the leading end of the film is taken out, when the cutting means is provided at the tip of the covering lid piece, the cutting means touches the back of the hand, and when it is provided at the tip of the front plate. The cutting means touched the fingers of the hand, causing pain and discomfort. In addition, when it is provided on the ridge, it may cause pain or discomfort by touching it when handling the paper box itself.
Some were injured. Furthermore, in distribution, cutting means existing at the ridges and corners damage other paper boxes and impair the commercial value, so consideration for distribution was also necessary. Therefore,
There has been a demand for a paper box of a rolled film having a safer and sharper cutting means.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and the structure thereof is a paper box of a wound film,
A cutting means is provided from the corner formed by the side and the tip of the covering lid piece toward the side, the cutting means is not provided at the leading end, and the width of the tip of the covering lid piece is unrolled. Characterized by being shorter than the width.

The wound film in the present invention is a plastic film such as vinyl chloride film, polyethylene film, polyvinylidene chloride film wound around a paper tube, paper such as glassine paper, wax paper, aluminum foil, etc. In particular, a polyvinylidene chloride film having a small tear propagation strength and an aluminum foil having a small tear strength are preferably used. The paper box for storing these wound films is a horizontally long box in which a rectangular front plate, a bottom plate and a rear plate are fixed by substantially square side pieces, and the lid extends from the upper end of the rear plate and the lid covers from the tip of the lid. A shape in which a piece extends is common. However, a paper box having a shape in which the lid body and the covering lid piece are connected to each other at substantially right angles by the lid side piece is also used.

The shape of the tip of the cover piece is usually linear, and preferably parallel to the longitudinal ridge of the paper box, but it may be serrated or slightly curved. In the present invention, it is necessary that the corner portion formed by the tip of the covering lid piece and the side portion is inside the both edge lines of the unwound film. for that purpose,
In the case of a paper box having no lid side piece, the covering lid piece preferably has a shape in which the width is shortened continuously or obliquely from the connecting portion with the lid toward the tip. Alternatively, when the width is sharply shortened and then the width is expanded in a range narrower than the width of the unwound film, the side portions have a concave shape and the corner portions have a particularly sharp shape. Further, the side portions may be serrated or wavy.

In the case of a paper box in which the lid lid piece is fixed at a substantially right angle to the lid body by the lid side piece as shown in FIG. 2, the covering lid piece is further extended from the ridge line formed by the lid side piece and the lid lid piece. The side portion of the extended portion is slanted toward the tip or a step is provided to reduce the width so that the corner portion is narrower than the width of the rolled film. Alternatively, when the width is sharply shortened and then the width is enlarged, the side portions have a concave shape and the corner portions have a particularly sharp shape. Further, the side portions may have a sawtooth shape. In short, it suffices that the corner formed by the side and the tip of the cover lid piece is surely inside the edge line of the unwound film.

A feature of the present invention is that no cutting means is provided at the tip of the covering lid piece. The cutting means is provided at the corners of the covering piece and the side portions in contact with the corners. It is not necessary to provide the cutting means over the entire side portion, but it is sufficient if it is provided at a portion that comes into contact with the corner portion. The cutting means is not particularly limited. The tin-made saw blade that has been used in the past may be fixed with caulking, eyelets, etc.Also, abrasive grains may be attached or paper may be cut into a saw-tooth shape and impregnated with resin at this site and cured. It may be If the resin liquid to be impregnated contains abrasive grains, sharpness is further improved.

[0009]

In the past, the means for cutting the wound film has been provided at the portion where the film can be easily bent when the film is covered, such as the end of the cover lid, the front plate, or the ridge of the box. This is because when the film is bent and pulled, the degree of tension of the film increases, and when the cutting means comes into contact with the film in this tension state, a notch is immediately formed to improve the sharpness. These parts are often touched by hand due to the unwinding of the film and the handling of the paper box itself, and the cutting means comes into contact with the hand each time, causing discomfort and even injury. In the present invention, the cutting means is provided from the corner formed by the tip of the covering piece and the side part toward the side part. The side part of the cover piece has a high cutting efficiency and is hard to touch, and the cutting means provided at this part does not cause any discomfort in handling the paper box of the wound film.

Upon cutting, the film is unwound and the covering lid piece is closed. When the unwound film is folded back at the tip of the covering lid piece and pulled from one edge, the cutting means at the side has an anti-slip effect. Then, the relative position between the film and the corner of the cover piece is fixed. Then, the cutting means at the corner surely penetrates deeply into the film, and a notch is formed, and this notch propagates toward the edge line in the vicinity at once, and this tear propagates to the other end as it is. Therefore, the paper box of the wound film of the present invention is extremely sharp, and the cutting means does not cause discomfort when it is touched by the hand.

[0011]

FIG. 1 is a perspective view of an embodiment of the present invention. 1
Is a front plate, 2 is a bottom plate, and 3 is a rear plate, which are sequentially connected via longitudinal ridges, and both ends are fixed by square side pieces 4. Reference numeral 5 denotes a lid body extending from the upper end of the rear plate 3, and a covering lid piece 6 overlapping with the front plate 1 extends from an end portion of the lid body 5. Reference numeral 7 is a tip of the cover lid piece 6, 8 is a side portion of the cover lid piece 6, and 9 is a corner portion. The width of the side portion 8 is reduced toward the tip 7, and the corner portion 9 comes inside the edge line 11 of the wound film 10. Reference numeral 12 is an abrasive grain as a cutting means which is attached to the paper end portion of the covering piece 6 from the corner portion 9 to the side portion 8.

In use, the covering lid piece 6 and the lid body 5 are opened halfway and the required amount of the wound film is unwound. Then, the lid is closed, the cover lid piece 6 is pressed on the front plate 1, and the film 10 is pulled from either side along the front end 7 and the film 10 is pulled.
A slight notch is formed slightly inside the edge line 11 of the film, that is, at the contact portion of the corner portion 9, and this propagates to the edge line 11 of the film on the side where the film is immediately pulled. This tear then propagated to the other edge line of the film and could be easily cut.

FIG. 2 is a perspective view of another embodiment. In the present embodiment, the paper box of the rolled film has a carton-pox type, that is, a shape in which the lid body 5 and the lid lid piece 6 are fixed at a substantially right angle by the lid side piece 13. Ridge line 1 formed by a cover lid piece 6 and a lid side piece 13 to form a corner portion 9
Make the cover piece longer than 4. As a result, the cover lid piece 6 has a non-fixed portion 15 which is not constrained by the lid side piece 13. The width of the side portion of the non-fixed portion 15 is obliquely shortened so that the corner portion 9 is located inside the width of the rolled film. Reference numeral 16 is a tin-made saw tooth blade as a cutting means, and 17 is a caulking for fixing the saw tooth blade 17 from the corner portion 9 toward the side portion 8. In cutting, the wound film can be unwound in the same manner as in the embodiment shown in FIG. 1 and pulled from either one of the sides to easily cut.

[0014]

EFFECTS OF THE INVENTION According to the present invention, the cutting means has a good sharpness, and the handling means does not cause any discomfort when touching the hand, and the tear propagation strength or tear strength is the same as that of vinylidene chloride film or aluminum foil. It is possible to provide a paper box suitable for a wound film having a particularly small size.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view of another embodiment.

[Explanation of symbols]

 1 Front plate 2 Bottom plate 5 Lid body 6 Cover lid piece 7 Tip 8 Side part 9 Corner 10 Rolled film 11 Edge line 12 Abrasive grains 13 Cover lid piece 14 Ridge line 15 Unfixed part 16 Saw blade

Claims (1)

[Claims] 1. A front plate, a bottom plate, and a rear plate are sequentially connected via ridge lines, and a lid is extended from an upper end of a rear plate of a horizontally long box body in which substantially square side plates are fixed to both sides. In a paper box of a rolled film in which a covering lid piece overlapping the front plate is extended from the tip of the lid, a cutting means is provided from a corner formed by the side and the tip of the covering lid toward the side, and the tip is The paper box of the rolled film is characterized in that the cutting means is not provided in the and the width of the end of the covering lid piece is shorter than the width of the unwound film.