JPH03187839A - Carton for rolled film - Google Patents

Abstract

PURPOSE:To provide safety and easiness in stretching and cutting of polyvinylidene chloride film or aluminum foil contained in a carton, to provide a means to prevent popping-out of a cardboard core and rolling-in of the film and to improve thereby overall serviceability by making a covering flap of the carton in a form having a projection on the broadest part other than the both ends thereof with its edge line around the projection made aslant against the edge line of the carton, and by protrusively providing a cutter to the projection for making of a rip to the stretched film. CONSTITUTION:When the title device is put to use, a film 13 is stretched in a necessary length with a flap of a carton opened. A covering flap 6 is then overlaid on a front board 1 of the carton, and with a cutter 9 provided on a projecting part of the covering flap 6 inserted into a slit 10 of the front board 1, the central part of the film 13 is cut in the breadthwise direction in a length slightly shorter than the length of the slit, and the carton is put in the state of complete closure. A rip formed at the center of the film extends along a slant edge 8 of the covering flap 6 only by pulling either of the carton or the stretched film, and then the rip reaches both ends of the film.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a polyvinylidene chloride film and aluminum foil that are wound around a paper tube and housed in a container having a cutting means. This invention relates to a rolled film paper box that completely improves the overall ease of handling, including the sealability of the container, the ease of pulling out the container, the prevention of the paper tube from popping out, and the prevention of the film from being rolled up.

[Conventional technology]

Conventionally, wrapped films such as wrap films and aluminum foils are wound around paper tubes and stored in horizontally long paper boxes, and the required amount is unwound from the end, and cut using a cutting means such as a metal serrated blade attached to the paper box or an abrasive surface. It was cut and used.

In particular, polyvinylidene chloride-based films are thin and self-adhesive, tend to adhere to each other, and have low tear propagation strength and tear with the slightest scratch, making them difficult to handle. Therefore, various means have been proposed for improving the following performances of polyvinylidene chloride film containers.

(a) Improved cutting performance and sharpness; (b) Safety with no risk of injury due to the cutting blade; (C) Sealing performance. Since the product can be used for food even after opening, it is used unsealed from a hygienic standpoint. It is preferable that the container is kept as tightly sealed as possible even after the start.

(d) Prevention of entrainment: Because polyvinylidene chloride film is thin and highly self-adhesive, this prevents the inconvenience of the cut end wrapping around the wound film and making it difficult to pull out the cut end for next use. To prevent.

(e) Preventing the paper tube from popping out: Prevents the inconvenience of the film popping out along with the paper tube when the film is pulled out forcefully.

(f) Ease of unwinding, (6) Ease of manufacturing paper boxes, etc.

[Problem to be solved by the invention]

Although various means have been proposed to individually solve the above requirements, there is still no means to solve all of them at the same time. An object of the present invention is to provide a rolled film paper box that simultaneously solves the above requirements.

[Means of problem solving]

The structure of the present invention is such that a front plate, a bottom plate, and a rear plate are sequentially connected via a ridge line, and a lid body extends from the upper end of the rear plate of an elongated box body, which is formed by fixing approximately square side plates to both sides. , in a paper box made of a rolled film in which a cover piece that overlaps with the front plate extends from the tip of the cover body, the cover piece has a shape that has the widest protrusion at a part other than both ends, and the periphery of the protrusion is arranged along the ridgeline of the paper box. The winding film is tilted relative to the winding film, a cutting means for perforating the wound film is protruded from the protrusion, and a slit into which the cutting means can be inserted is formed in the front plate.

As the wound film in the present invention, a polyvinylidene chloride film wound around a paper tube, aluminum foil, or the like is preferably used.

The paper box that stores these rolled films is a horizontally long box with a rectangular front plate, bottom plate, and rear plate fixed by approximately square pieces on both sides.A lid extends from the upper end of the rear plate, and a cover extends from the end of the lid. A shape with extended pieces is common. However, the triangle
You can choose any cross-sectional shape, such as a triangle with rounded corners, a polygon, a circle, or a semi-cylindrical shape.

The cover piece is required to have a protruding shape that is widest at a portion other than both ends, preferably at the center, and the periphery of this protrusion is inclined and gradually becomes narrower. However, it is not necessary to provide this inclination over the entire cut end of the cover piece, and an inclination of about 3 to 5 cIll around each protrusion is sufficient.

As the cutting means, a cutting blade is made to protrude from the protrusion. The cutting blade is made by hardening and reinforcing the tip of the protruding part of the paper carton itself with resin or a mixture of resin and inorganic powder, or by using a metal plate, a plastic plate, a paperboard reinforced with resin or a mixture of resin and inorganic powder, or a thin ceramic. There are no particular limitations on the plate, etc., and any thin, hard material that can provide perforations, preferably horizontally elongated perforations, in the film may be used. Generally, the protrusion is made at an angle of 40 degrees to 100 degrees, preferably 50 degrees to 70 degrees. When using a particularly sharp material such as a metal plate, it is better to have a slightly rounded tip for safety reasons.

When providing such a cutting means, the cutting means may be attached to the protruding portion of the cover piece using an adhesive, or in the case of a metal plate or the like, it may be directly fixed with eyelets, caulking, etc.

It is preferable that the front plate of the paper box is provided with a slit. This slit is provided at a position into which the cutting means provided at the tip of the cover piece can be inserted. Therefore, simply by opening the cover piece and inserting the cutting means into the slit with the required amount of rolled film rolled out, a perforation is inevitably made in the film, and by simply pulling the box away from the film, the film can be The cut hole made in the center is guided to the diagonally cut end of the cover piece and propagates, so that the wound film can be cut almost perpendicularly to the length direction of the film. After cutting, since the cutting means is inserted into the slit, the lid is in a completely closed state, and the lid does not pop up like in the conventional case, and the sealing performance is good, so it is hygienic. Further, since the cut end of the film is a crack that propagates, the actual strength of the edge of the film is improved.

In particular, polyvinylidene chloride-based films have low tear propagation strength, so when cut with a conventional sawtooth that has serrations on the entire surface, the cut end becomes serrated. When this film is used, the serrated cut edge becomes a tear initiation point when a slight force is applied, and the film may tear unintentionally.

In such cases, general consumers tend to misunderstand that the strength of the film itself is low.

As in the present invention, if the perforation made in one place is guided by the inclined cut end of the cover piece, there will be no damage to the cut, and even if an undesired force is applied, there will be no serrated recess that should propagate. Because there are no cracks, it is difficult to tear and has increased apparent strength.

[Effect]

According to the present invention, the cut end of the cover piece is sloped to have a sharp tip, and a cutting means made of a thin hard material is protruded from and attached to the tip, and the cutting means can be inserted into the front plate. It is intended to provide a slit that can be used. the result,
When the tip of the cover piece is inserted into the slit on the front plate, the film between the front plate and the cover piece is inevitably perforated by the cutting means, and this hole cuts the box horizontally and vertically in the direction opposite to the direction in which the film is pulled out. Just by pulling, the film can be cut at once by being guided by the slope of the cut end of the cover piece. The cut edges of the cut film are smooth and have no irregularities such as sawtooth shapes, so even if an unexpected force is applied during use, there are no scratches or irregularities to propagate, so it is difficult to tear.

Furthermore, since the box is opened only when pulling out the film, and is always closed in other situations, there is no risk of the film being contaminated with dust, etc., making it sanitary.

[Example] Fig. 1 is a perspective view of the present invention, Fig. 2 is a developed view of a paper box, and Fig. 3 is a perspective view of the present invention.
The figure is a sectional view of the central part of FIG.

2 is a front plate, 2 is a bottom plate, and 3 is a rear plate, which are successively connected via longitudinal ridge lines and fixed at both ends by square side pieces 4. 5 is a lid extending from the upper end of the rear plate 3;
A cover piece 6 that overlaps the front plate 1 extends from the end of the cover body 5. 7 is a protrusion of the cover piece 6, and in this embodiment, it is provided at the center. The periphery of the protrusion 7 is required to be gradually inclined and the distance from the lid 5 to be shortened. This slope 8
has the effect of guiding the perforation formed by the cutting means 9 provided on the protrusion 7 toward both edge lines of the film.

Reference numeral 10 denotes a slit, and a guide slit 11 is bored toward the end of the front plate to form a tongue piece 12 to facilitate insertion of the cutting means 9, but the tongue piece 12 is not necessarily required. 13 is a polyvinylidene chloride film, 14 is a glued piece, and 15 is a paper tube.

In this embodiment, a cutting means made of an arrow-shaped tin plate with a slightly rounded tip was provided.

Reference numeral 16 denotes a caulk for fixing the cutting means 9 to the protrusion 7.

In use, the lid of the paper box is opened to the state shown in FIG. 1, and the film 13 is unwound to a required length.

Next, as shown in FIG. 3, when the cover piece 6 is stacked on the front plate 1 and the cutting means 9 provided on the protruding part of the cover piece 6 is inserted into the slit 10 of the front plate 1, the central part of the film 13 is cut down to the length of the slit. The paper box is cut transversely slightly shorter than the sheath, leaving the paper box completely closed. Then, by simply pulling the paper box or film, the perforation in the center of the film is first made by the slope 8 of the cover piece 6.
The tear reaches the edge of the film.

In the present invention, after providing perforations in the center of the film,
The slope 8 of the edge line of the cover piece 6 is important, as it guides the first perforation toward the edge line without resistance. The required length of this slope 8 varies depending on the slope angle, but generally a length of about 3 to 5 cm in both directions is sufficient. In this example, it was tilted to the end. Moreover, no cutting means other than the cutting means provided on the protrusion 7 is provided at the cut end of the cover piece 6. If cutting means such as serrations are present in other parts, the tear propagation properties of the film will be reduced and the cutting quality will be reduced. Moreover, uneven notches remain at the cut end of the film, reducing the substantial strength of the cut end of the film.

FIG. 4 is a perspective view of a paper box for a wound film having a triangular cross section with rounded corners, and FIG. 5 a paper box for a rolled film having a semicircular cross section. The case shown in FIG. 4 has the advantage of being easy to hold without being angular.

As the cutting means 9 is a colored tin plate cut into a fletching shape and fixed to the outside of the protrusion 7 by caulking, it has a decorative effect.

Furthermore, in both the paper boxes shown in FIGS. 4 and 5, the circular rolled film is placed inside the hollow triangle or semicircular shape, so a gap is created between the container and the rolled film at the bottom of the container. Therefore, when the cutting means 9 is inserted into the slit 10, the paper carton is easily dented due to the existence of this gap, and the slit is easy to open, making insertion of the cutting means 9 even easier. Furthermore, in the case of FIG. 5, there is a sense of stability as a whole.

In the embodiments described above, the shape of the cover piece is sharpened at the center, and the slope 8 is formed as a straight line from the end toward the center, but as shown in FIG. 6(a), Both ends of the cover piece 6 have the same width, and the slope 8 starts from both ends of the cutting means 90 and may have a shape that does not extend over the entire end of the cover piece.

Alternatively, the slope 8 may be a curved line as shown in FIG. , the protrusion may be provided with a cutting means 9.

〔Effect of the invention〕

The present invention has solved all the requirements for sharpness, safety, hygiene, productivity, prevention of entanglement, and other requirements for paper box-wrapped films at once.

Furthermore, if the method used in the prior art is to cut the unwound film from the end, the cut film will be agitated and flutter due to torsional stress and cannot maintain its horizontal shape. In this case, if the film is thin and highly self-adhesive, such as polyvinylidene chloride, the film itself will stick to each other, making it difficult to handle. According to the present invention, the food or tableware to be covered can be cut by simply placing the unrolled film on top of the food or tableware and pulling the paper box horizontally and vertically in the opposite direction to the direction in which the film is pulled out, without moving the film itself. The film remains horizontal and falls directly onto the food or tableware, making it much easier to handle.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, FIG. 2 is a developed view, FIG. 3 is a cross-sectional view along the center line of FIG. 1, and FIG. 4 is a triangular cross-section with rounded corners. FIG. 5 is a perspective view of a paper box with a rolled film having a semicircular cross section, and FIG.
), et al.) and (C) are explanatory diagrams showing the relationship between the shape of the cover piece and the slope and the mounting position of the cutting means. In the drawings, 1 is a front plate, 2 is a bottom plate, 3 is a rear plate, 4 is a side piece, 5 is a lid body,
6 is a cover piece, 7 is a protrusion, 8 is a slope, 9 is a cutting means, 1
0 is a slit, 11 is a guide portion, 12 is a tongue piece, 13 is a film, 15 is a paper tube, and 16 is a caulk.

Claims (3)

[Claims] (1) The front plate, bottom plate, and rear plate are sequentially connected via the ridge line,
A rolled film paper box in which a lid body extends from the upper end of the rear plate of a long box body with substantially square side plates fixed to both sides, and a cover piece that overlaps the front plate extends from the tip of the lid body,
The cover piece has a shape having the widest protrusion at a portion other than both ends, the periphery of the protrusion is inclined with respect to the ridgeline of the paper box, and a cutting means for perforating the wound film is protruded from the protrusion. A paper box made of rolled film. (2) The front plate, bottom plate, and rear plate are sequentially connected via the ridge line,
A rolled film paper box in which a lid body extends from the upper end of the rear plate of a long box body with substantially square side plates fixed to both sides, and a cover piece that overlaps the front plate extends from the tip of the lid body,
The cover piece has a shape having the widest protrusion at a portion other than both ends, the periphery of the protrusion is inclined with respect to the ridgeline of the paper box, and a cutting means for perforating the wound film is protruded from the protrusion. A paper box for rolled film, characterized in that the front plate has a slit into which the cutting means can be inserted. (3) In a paper box that allows the rolled film to be stored lying horizontally and unwinds the film sequentially from the end, and also has an opening through which the rolled film can be taken in and taken out, from the rear plate that sandwiches the opening. A paper box made of a rolled film having an extended cover piece that covers an opening and overlaps with a front plate sandwiching the opening, wherein the cover piece has a shape that has the widest protrusion at a portion other than both ends, and the protrusion The winding film is characterized in that the periphery thereof is inclined with respect to the ridgeline of the paper box, a cutting means for perforating the wound film is projected from the protrusion, and a slit into which the cutting means can be inserted is formed in the front plate. Paper box for film.