JPH07329958A - Wrapping film storage box - Google Patents

Abstract

PURPOSE:To prevent a wrapping film from coming out of a storage box and unwinding and keep this prevention more perfectly. CONSTITUTION:In an opening of a storage chamber of a storage box, a presser plate having a chevron-shaped edge, in which a width XI in the longitudinally center part of the opening is 87-54% of the width of the opening of the storage chamber, a width X3 in the longitudinally end part of the opening is 44-11% of the width of the opening, and a width X2 in the middle point between the center part and the end part is 70-32% of the width of the opening (where a relation of X1>X2>X3 is should be met), is extended from the edge of a front plate to a storage chamber and disposed at an angle of 92-125 degrees made between the rear surface of the presser plate and the rear surface of the front plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll-wrap film storage box that is generally used for food packaging in general households. It does not rewind.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5A and 5B, a wrap film in which a front plate 1, a bottom plate 2, a rear plate 3, and a side plate 8 are in a wound layer (abbreviated as a wound layer wrap film). ) A direction in which a storage chamber 20 for storing R is formed, a cover plate 4 extends from the upper edge of the rear plate 3 in a direction to cover the opening of the storage chamber 20, and a front edge of the cover plate 4 covers the front plate 1. A rectangular box body in which a cover lid piece 5 extends to the end of the cover lid piece 5, and a cutting tool K is fixed to the tip of the covering lid piece 5, and the necessary amount of film is drawn from the stored wound layer wrap film R to fix the cutting tool. The wrap film storage box used by cutting at K is widely commercially available and well known. This type of box is generally made of paperboard. For example, as shown in FIG. 4, a front board 1, a bottom board 2, a rear board 3, a lid board 4, and a cover lid piece 8 of a paperboard mount are shown by fold lines. First, it is bent at a substantially right angle to form a rectangular column shape, and then the winding layer wrap film R is inserted into the prism from the side plate opening, and then both side plates 8 are closed and bonded to form a rectangular shape in which the wrap film is stored. It is general to form it in the box body [see FIG. 5 (A)]. Then, in practical use, the portion of the unsealing piece 6 fixed by the local joint portion 9 is cut off from the perforation line 10 and opened as shown in FIG. 5 (B), and the required amount of the wrap film F is wound from the wound layer wrap film R. Is pulled out and cut by a cutting tool K fixed to the tip of the box cover. There are various cutting tools for this kind of storage box in the overall shape drawn by the cutting edge, and the shape of the virtual line connecting the cutting edges is, for example, a straight shape, a concave arc shape, or a convex arc shape. It is known that there are a thing, a V-shaped protrusion, a trapezoidal protrusion, and the like. FIG. 5 shows an example of a case where a metal saw blade having a straight virtual line connecting the cutting edges is attached to the tip of the covering lid piece 5 having a straight tip. The side cover lid piece 11 extending from the plate 4 in the direction to cover the side plate 8 is shown as an example when it exists as a reinforcing portion of the cover lid piece 5. The box body illustrated in FIG. 5 has the advantages that the box body is relatively strong and the film cutting performance is excellent, but on the other hand, the covering lid piece 5 has a width of about half the height of the front plate 1. Since the cutting tool K is fixed at a short length, the cutting end of the film is attached to the cutting tool together with the lid when the lid is opened and the next film is pulled out. The film is lifted as it is, the cut end of the film is rewound by the momentum to the winding layer wrap film side, and the film edge for pulling out is not lost, and the lid is half-opened However, there is a problem that the wound layer wrap film R often pops out of the storage chamber 20 in order to pull out the film. As a measure against this, a "smooth surface or adhesive surface = temporary fastening portion" for adhering the cut end of the film to the surface portion of the front plate covered with the cover lid is installed in advance, and the box side plate 8 is also attached. In the central part, a mechanism is installed in the box in advance, which is a device to prevent part of both side plates from being folded when pressed from the outside into the paper core of the roll layer wrap film, and serving as a pop-out prevention device. Is currently not being effectively utilized at the consumer stage.

On the other hand, as a measure against the same defective phenomenon as described above, in addition to the box structure shown in FIG. 5, "it is located on the back side of the cover plate 4 and from the upper edge of the front plate 1 to the opening side of the storage chamber 20". A box body provided with an extended pressing plate 21 "is also known. For example, in Japanese Utility Model Application Laid-Open No. 52-95736, the existence of "a lap support piece extending from the upper edge of the front plate to the opening side of the storage chamber (which is synonymous with the holding plate 21)" makes the box strong, and It specifically teaches that it is useful for preventing popping out. Further, in Japanese Utility Model Laid-Open No. 3-26720, if the extension length of the supporting piece is set to 1/2 + 1/20 of the side short side (agree with the opening width) (about 55% of the opening width), It has been clarified that the drawability of the film can be maintained and that it is effective in preventing the rolled layer wrap film from popping out.

[0004]

However, since none of the above-mentioned prior arts are practically useful, there has been no practical use up to now. That is, these are the effect of preventing the roll layer wrap film from popping out of the box body by the amount by which the width of the holding plate is increased by covering the opening of the storage chamber with the holding plate, and the film end even when rewound. While it has the effect of preventing the film from rewinding by holding it on the holding plate, it sometimes makes the removal operation of the winding layer wrap film difficult during the drawing operation, and the increase in the drawing resistance that occurs when the film is drawn out. There is a problem that can not be controlled. For example, use a vinylidene chloride resin film with excellent suitability for close-packing and set the width of the holding plate to about 3 times the width of the opening.
When it is set to 0%, the pull-out resistance of the film from the box is about 3.5 in comparison with a normal storage box, even when the film width is pulled straight out horizontally by holding the center of the film width. If the pull-out angle is biased to the left or right by about 4 degrees, the resistance will increase to about 4 times and it cannot be put to practical use. Also, even when pulling out the center of the same film width, if the pulling direction is biased upward from the top surface of the presser plate, the back surface of the presser plate is raised (because the rotation due to the inertia of the winding layer wrap film progresses). There is a problem that the drawn-out film is sandwiched between the wound-up wrapping film and the wound-up wrapping film so that the film cannot be substantially taken out.

These problems are particularly serious in domestic use in which the box is handled and pulled out in various ways. For example, it is surprisingly common for many people to pick up the front side of the width of the film and pull it out in an oblique direction, and pull it out by the long end of the box to perform a cutting operation. The pullout resistance is more likely to increase than usual. In an extreme case, some people pull the film along the half-open lid with the lid half-opened and perform a cutting operation. There is often a case where it is thrown out to the end, another task is finished, and the next film is pulled out from the box and used again. In such a case, the wound layer wrap film has a high probability of popping out of the box body and the end of the film being wound back to the wound layer wrap film side. In other words, the recent market demand for storage boxes is
Performance requirements are shifting to those that will not cause any abnormalities even if they are used as is, and accept storage boxes that require some kind of processing operation such as bending for prevention or careful operation. There is a tendency not to be.

The object of the present invention is to provide a wound layer wrap film from the box body even if the box body is left unopened without any preventive operation, even if the box is turned upside down with the lid body open. It is an object of the present invention to provide a storage box which has a high-level prevention function of preventing the film from popping out, yet allows the winding layer wrap film to be attached / detached to / from the box body, and has a pull-out property of the film with less resistance. In this storage box, since the wound layer wrap film is well held in the box, the occurrence frequency of the phenomenon that the film end is rewound into the box can be significantly reduced. In addition, even if the film edge is rewound into the box for some reason during the drawing operation, the unwound film edge remains on the winding layer wrap film in a folded state of double or more and the film edge Prevent from being missed. Therefore, the above-mentioned object of the present invention provides a storage box provided with a function of preventing the roll-up wrap film from popping out and rewinding, in a state where it is easy to attach / detach the roll-layer wrap film and pull out the film. It is also to do.

[0007]

According to the structure of the present invention as a box body, a front plate 1, a bottom plate 2, a rear plate 3 and a side plate 8 form a storage chamber 20 for storing a winding layer wrap film R, A lid plate 4 extends from the upper edge of the rear plate 3 in a direction to cover the opening of the storage chamber 20, and a cover lid piece 5 extends from the leading edge of the lid plate 4 to cover the front plate 1.
And a cutting tool K is fixed to the end of the cover piece 5,
Furthermore, it is located on the back side of the cover plate 4 and the storage chamber 2 is located from the upper edge of the front plate 1.
It is a rectangular box body having a holding plate 21 extending to the 0 side,
In the storage box of the wrap film, which is used by pulling out the required amount of the film from the stored wound layer wrap film R and cutting it with the fixed cutting tool K, the longitudinal center portion of the holding chamber opening of the holding plate 21 ( The width (X1) of M1) is 87% to 54% of the opening width of the storage chamber, and the width (X3) of both sides of the opening (M3) is 44% to 1 of the opening width.
1%, the width (X2) at the midpoint (M2) of (M1) and (M3) is 70% to 32% of the opening width, and the widths X1, X2, and X3 are the following general formula ( 1) is satisfied, the pressing plate 21 forms a mountain-shaped tip edge, and the pressing plate 21 forms an angle of 92 to 125 degrees between its back surface and the back surface of the front plate 1. It is characterized in that it extends from the edge of the front plate 1 to the storage chamber 20 side.

X1>X2> X3 (1) That is, the difference from the prior art of the present invention lies in the pressing plate 21 extending from the edge of the front plate 1 toward the storage chamber 20, and specifically, a) The shape of the tip edge portion of the holding plate is to be a mountain shape having the maximum value (of 87% to 54% of the opening width) in the longitudinal center of the storage chamber opening. B) The holding plate 21 The angle between the back side of the and the back side of the front plate 1 is 9
It has a width of 2 to 125 degrees and extends to the storage chamber 20 side. The contents of the present invention will be described below with reference to the drawings.

1 (A) to 1 (C) are schematic views of an embodiment of a holding plate according to the present invention, in which the holding plate 21 of a storage box has a chevron shape with respect to the box opening. It is the figure which put the subject in the thing which has. That is, the width dimension of the opening of the storage chamber 20 of the box body is drawn by a broken line indicated by Y1 and the longitudinal dimension thereof is indicated by Y2, and the shape of the pressing plate 21 occupying in the opening with the upper edge of the front plate 1 of the box body as the bottom side is drawn. It is drawn by a solid line, and the characteristic of the shape is shown by the distribution of the width dimension (X1, X2, X3 = tip end position) of the holding plate at the fixed points (M1, M2, M3) in the longitudinal direction of the opening. The position of the longitudinal side portions (M3) of the storage chamber opening referred to here is about 5 to 15 mm inside from the actual longitudinal side edges of the opening portion. This is because it is preferable that the shape of both sides of the presser plate is sharply obliquely cut out as shown in FIG. 1 for the reason to be described later. Therefore, the obliquely cutout part is expressed as the tip edge of the pressing plate. It depends.

First, fixed points (M1, M
2, M3) position of presser plate width (X1, X2,
X3 = tip position) and its relational expression (1) define the chevron shape of the holding plate 21 suitable for the present invention. In the mountain shape referred to here, only the portion of X1 that hits the apex forms an arc shape with a width of 15 to 35 mm centering on X1, but the ridges of other mountains are drawn with a flat line that is close to a straight line. It is a thing. This chevron, for example, in FIG. 1 (B) shows a rise in the film drawing resistance regardless of the fact that it is projected by 67% at (X1 / Y1) at the X1 part. 50% against resistance
Can be kept below.

In the storage box of the present invention, (X1 / Y
1), (X2 / Y1) and (X3 / Y1) are 87% or more, respectively.
It is important that they are 54%, 44% to 11%, and 70% to 32%. The upper limit of each of X1, X2, and X3 is a limit at which the increase in the drawing resistance of the film can be suppressed,
The respective lower limit values are for ensuring the area (S) of the holding plate effective for preventing the rolled-up wrap film from popping out. Further, the lower limit value of (X3 / Y1) is related to the working accuracy (= working function) of the presser plate, so that special attention is required. That is, the holding plate here is required to be strong so that its hinge portion maintains a desired inclination angle. In other words, it does not make sense at the hinge portion where the inclination angle easily and greatly changes due to the external force applied to the holding plate. Therefore, the pressing plate according to the present invention is, for example, once bent 180 degrees inward at its bent portion and subjected to a pressing process of about 20 kg at the fold portion, and at the stage of box assembly, press the pressing plate, for example. Temporarily attach the front side of the to the back side of the lid plate to cause it, and then change the folding position of the box assembly to return the fold line that was folded 180 degrees to be flat.
A desired inclination angle is set by utilizing the restoring force of the fold line. If there are many portions with a width dimension of less than 5 mm in the length of the holding plate, it becomes difficult to process the folds for bending the above 180 degrees, and the bending accuracy deteriorates.
Less than will correspond to the lower limit of (X3 / Y1).

In view of the above-mentioned effects and the operation described later, the ratio of the area (S) of the pressing plate to the total area (Y1 × Y2) of the storage chamber opening [S / (Y1 × Y2)].
Is preferably in the range of 70 to 30%. Next, in the storage box of the present invention, the set angle of the presser plate is 92 to 125.
It is important to have a degree. This condition is for ensuring the adjustment of the film tension. If it is less than 92 degrees, its role is difficult to expect, and conversely, if it exceeds 125 degrees, the presser plate will fold due to the film tension. Therefore, the accuracy of flipping up in the opposite direction is increased, and the sealing property of the lid is deteriorated by the pressing plate. The preferable setting angle of the holding plate is in the range of 100 to 120 degrees. This setting angle is
Adjust in consideration of the relationship between the height of the rear plate and the height of the front plate.

In the method for manufacturing a storage box according to the present invention, for example, the front plate 1, the bottom plate 2, the rear plate 3, the lid plate 4, and the cover lid piece 8 of the paperboard mount illustrated in FIG. First, a quadrangular prism is formed by bending the wrapping layer wrap film R into the prism from the side plate opening, and then both side plates 8 are closed and bonded to form a rectangular box. In many cases, the method is adopted. When the above-mentioned wound layer wrap film is inserted, the wound layer wrap film hits the side edge of the holding plate 21 inside the prismatic body to make it difficult to insert, and the box body obtained by forced insertion is the side of the holding plate 21. Occasionally, the edges are deformed and damaged. As a countermeasure against this, it is effective to temporarily bond and fix the front surface of the pressing plate to the back surface of the lid plate as described above, but this temporary adhesion may often be peeled off in the box assembly process. . At this time, it is desirable that the inside portion of the pressing plate 21 having a length of 7 to 13 mm from both sides in the longitudinal direction of the opening be cut out with an inclination of 60 to 40 degrees. Presser plate 21 cut out with this inclination
, Even if the wound layer wrap film hits the side edge,
Inclination angle (presence position) of the presser plate by guiding the notched side edge
To facilitate the insertion of the wound layer wrap film.

As an additional effect of the pressing plate 21, there is an effect of imparting rigidity to the box body, for example, an effect of preventing the front plate 1 from being deformed in a bow shape by the film tension at the time of pulling out. In order to enhance this effect, it is effective to apply embossing (form an uneven portion by pressing) to the plate surface of the pressing plate 21. The number and shape of the embosses are sufficient if the 1 to 3 recesses or protrusions are arranged linearly in the middle of the mountain-shaped pressing plate, and the direction of the arrangement may be vertical or horizontal. Absent.

The storage box according to the present invention is designed so that the films are in close contact with each other,
It is most effective and desirable to use it for a wrap film storage box made of vinylidene chloride resin, which has excellent adhesion to other articles. This kind of storage box has a width of 45 to 55 mm,
A product having a longitudinal dimension of 150 to 470 mm is commercially available.

[0016]

2 (A), 2 (B) and 3 are views for explaining the operation of the present invention. 2 (A), (B)
FIG. 7 is a cross-sectional perspective schematic view showing the relationship between the state of the wound layer wrap film during the drawing operation of the film and the holding plate, and is an internal perspective view cut along the longitudinal center of the storage box in the half-opened state. That is, the front plate 1, the bottom plate 2, the rear plate 3, and the side plate 8 (the side plate 8 is not shown) form a storage chamber 20 for storing the wound layer wrap film R, and the storage chamber 20 is rearward in a direction to cover the opening. A lid plate 4 extends from the upper edge of the plate 3, a covering lid piece 5 extends from the leading edge of the lid plate 4 in a direction to cover the front plate 1, and a cutting tool K is fixed to the tip of the covering lid piece 5. A mountain-shaped holding plate 21 that is located on the back side of the cover plate 4 and extends from the upper edge of the front plate 1 toward the storage chamber 20 side is provided between the back surface of the holding plate and the back surface of the front plate 1 [Fig. In the case of A), the storage chamber 20 has an angle of 110 degrees].
Extending to the side. 2A shows the state before the start of drawing, and FIG. 2B shows the state when the drawing is in progress. In addition, FIG. 3 shows the action of the holding plate of FIG.
It is shown in a schematic view seen from the upper surface of the storage chamber 20. That is,
The existence of the mountain-shaped presser plate 21 occupying the storage chamber 20 is shown by a dotted line, and the release position P of the film generated on the winding layer wrap film R is shown by a dashed line.

The role of the holding plate 21 satisfying the requirements a) and b) of the above-mentioned constitution of the present invention, that is, the holding plate 21 having a specific mountain shape and having an inclination angle, first of all, has the role of the winding layer wrap film R. It is to completely prevent the wound layer wrap film R from protruding from the box while maintaining the ease of the detaching operation.
The balance between the two is covered by the ratio (area) of the chevron shape of the holding plate 21 covering the opening of the storage chamber 20 in FIG. 3 and the inclination angle of the holding plate 21 shown in FIG. 2 (A). .
When the film end is rewound into the box body, the mountain-shaped holding plate 21 plays a role of surely holding the film end on the winding layer wrap film in a state in which the film end is bent more than double. In this case, it will play a role in reducing the drawing resistance.

Each of the above roles will be specifically described below.
Since X1, X2, and X3 of the storage box of the present invention are in the above range, the area of the holding plate 21 having a peak shape with the maximum width in the central portion is relative to the total area (Y1 × Y2) of the storage chamber opening. The ratio (covering the opening) reaches 70 to 30%, and even if the box is turned upside down and shaken with the lid opened,
The wound layer wrap film R does not pop out of the box.
Therefore, it is possible to completely prevent the phenomenon that the film is rewound to the wound layer wrap film side due to the protrusion. On the other hand, the detaching operation of the winding layer wrap film R is performed from one end of the opening portion not covered by the holding plate. For example, when taking out the winding layer wrap film R, hang the fingertip on the end of the paper tube and pull it up diagonally. If so, it can be easily mounted, and the mounting can be easily performed by inserting operation from the opposite diagonal direction. At this time, the presser plate is set with an obtuse set angle such that the fold line between the presser plate and the upper end of the front plate can be rotated with the folds as the fins. Therefore, the operation of detaching the winding layer wrap film R in the oblique direction can be performed. help.

Further, the mountain-shaped pressing plate 21 forms a film releasing position P as shown in FIG. The locus of the release position P generated in the longitudinal direction on the wound layer wrap film R has a gentle mountain shape and the mountain hem portion is reversely inclined, forming another mountain shape different from the mountain shape of the holding plate. The formation of the release position P is as shown in FIG.
In (A), the tension of the film is not yet applied to the presser plate 21, so the presser plate 21 is in the state of maintaining its set angle (110 degrees), but in FIG. 2B, the wound layer wrap film R is caused by the tension. It is shown that the holding plate 21 is pulled up and lifted up, the set angle of the holding plate 21 is held down by about 90 degrees, and the holding plate 21 itself is also curved and deformed. This curved deformation is large in the central portion of the mountain of the pressing plate having a large width dimension, but the deformation is small toward the skirt portion of the mountain having a small width. Therefore, the tip end of the pressing plate 21 after the curved deformation is in contact with the winding layer wrap film surface in the vicinity of the central portion of the crest, but is in a state in which it has a distance from the winding layer wrap film surface toward the crest of the crest, and as a result, as shown in FIG. The locus of the release position P of the film is formed as shown in FIG. The change in the set angle and the curving deformation of the holding plate 21 return to the original state due to the rigidity and elasticity of the paperboard when the tension of the film is released, but this changed state is maintained at least during the drawing of the film. It will be.

The formation of the locus of the release position P of the film described above plays a role of reducing the withdrawal resistance, imparts an allowance for coping with the difference in the withdrawal direction of the film, and rewinds the film. In case of accident, it will ensure preventive measures. First, the reduction of the drawing resistance will be described. The main part of the role of a scraper that scrapes off the film that is strongly adhered to the circumferential surface of the winding layer wrap film R is mainly controlled by the top of the mountain of the pressing plate 21 and the tip edge portion in the vicinity of the mountain, and from the hillside to the hill. The scraping off of the film at the portion is covered by the distance (drop) between the leading edge of the holding plate 21 at that portion and the winding layer wrap film surface. The formation of this head is based on the dimensional regulation that constitutes the chevron shape, but with the presser plate 21 of the present invention, the above-mentioned head drop at each tip edge in the process from the crest of the mountain to the skirt of the mountain increases temporarily. Since the holding plate has a large protrusion, the pull-out resistance is not so high as compared with the holding plate having a large protrusion, and the pull-out resistance of the conventional box without the holding plate can be increased to about 50%. In addition, the drop portion generated at the skirt of the presser plate 21 causes a local variation in tension caused by a difference in the film drawing direction angle,
The bending deformation of the presser plate at the foot of the mountain creates room for absorption.

Further, the reversible changes in the set angle and the bending deformation of the holding plate 21 during the pulling out operation shown in the relationship between FIGS. 2 (A) and 2 (B) absorb the tension fluctuation of the film and wind the film. The layer wrap film prevents inertial slipping.
As a result, the pulled-out film is sandwiched between the back surface of the pressing plate and the lifted wound layer wrap film so as to be sandwiched, and an effect of preventing the film from being pulled out is obtained.

Next, the preventive function when the film is rewound will be described. This action is due to the shape of the locus of the release position P of the film shown in FIG. 3 and the mountain shape of the holding plate 21 covering the surface of the winding layer wrap film. That is, the leading end of the rewound film is at the release position P of the film.
It will be bent in the opposite direction starting from, and will be double or more and will remain on the surface of the wound layer wrap film or the holding plate. Therefore, the leading end of the film is not lost, and it is possible to easily pull out the film again by pinching the double-folded portion or more.

[0023]

【Example】

[0024]

[Examples 1 to 3] At the upper edge of the front plate 1 of the box body shown in FIG.
A mount layer wrap made of vinylidene chloride-based resin is obtained by folding a mount (one example of which is shown in FIG. 4) on which a holding plate 21 having the shape shown in FIGS. Storage boxes each containing a film [20 m roll, brand name Saran Wrap: manufactured by Asahi Kasei] were prepared with the dimensions shown in Table 1 for each 100 boxes. In FIG. 1, as a concrete fixed point of the length of the opening, M1 is the position of the center of the box opening, M3 is 10 mm from both sides of the box opening, and M2 is the above M.
The positions of the midpoints of 1 and M3 are shown respectively. In addition, the inclination angle of the pressing plate 21 with respect to the rear surface of the front plate at this time was in the range of 100 to 115 degrees.

[0025]

[Table 1]

The obtained storage box was evaluated under the following conditions. The results are shown in Table 2. [Comparative Evaluation] The following items a to g were evaluated by using samples of 5 to 10 boxes selected at random. a. With the box opened, hold the bottom of the box to turn the box upside down (the lid is on the bottom), and shake it lightly to evaluate whether the wound layer wrap film is popped out. B. In the opened box, the winding layer wrap film was repeatedly detached and attached three times, and the ease of the detaching operation and the evaluation of the deformation of the holding plate were evaluated. C. At the stage of opening the film and pulling out the film, the box is overturned (the cover piece is on the upper surface) to evaluate whether or not the wound layer wrap film pops out. D. Evaluate whether or not the rolled layer wrap film is popped out by repeatedly pulling out the film that is pulled out diagonally upward at 50 ° to the bottom plate surface by fastening the lid to the full opening where the lid plate surface becomes 90 ° to the bottom surface. ． Repeat a series of operations of [open lid-drawing of film (about 15 cm) -close lid-cutting] as quickly as possible to obtain 10
Evaluation of occurrence of roll-up, wrapping film wrapping film rewinding and film rewinding f. Measurement evaluation of the pull-out resistance value when the box is fixed horizontally and the film is pulled out vertically to the box and horizontally to the bottom plate g. Measurement of the drawer resistance value when the above drawer is tilted 4 degrees from the vertical line to the box and evaluation of the occurrence of abnormal phenomenon

[0027]

[Comparative example] The shape of the holding plate is 23 from M1 to M3.
Storage under the same conditions as in the embodiment except that the holding plate has a quadrilateral shape having a constant width of 50 mm (ratio of 50% to Y1) and the holding plate has a tilt angle of 90 degrees (no tilt). 100 boxes were made. The obtained storage box was evaluated in the same manner as in the example. The results are shown in Table 2.

[0028]

[Reference example] For reference, the currently available "Saran Wrap"
(Registered trademark; manufactured by Asahi Kasei Kogyo Co., Ltd.), 100 boxes of the same type of storage box (the shape of which is shown in FIG. 4 = no holding plate 21) were also prepared, and the same evaluation as in the example was performed. The results are shown in Table 2.

[0029]

[Table 2]

[0030]

According to the present invention, by having the above-mentioned configuration,
A high-level prevention function that prevents the rolled layer wrap film from popping out of the box even if the box is left open and shaken even if the box is turned upside down without opening any lid. It is an object of the present invention to provide a storage box which has a roll-wrap film and which can be easily attached to and detached from the box body, and which has a film pull-out property with little resistance.
This storage box has an effect that the winding layer wrap film is well held in the box body, so that the occurrence frequency of the phenomenon that the film end is rewound into the box body can be significantly reduced. In addition, even if the film edge is rewound into the box for some reason during the drawing operation, the unwound film edge remains on the winding layer wrap film in a folded state of double or more and the film edge It has the effect of preventing loss of sight.

[Brief description of drawings]

1 (A), (B), and (C) are schematic plan views of the shape of a holding plate showing Examples 1, 2, and 3 of the storage box of the present invention.

FIGS. 2A and 2B are perspective explanatory schematic diagrams showing the operation of the storage box (embodiment) of the present invention. FIG.

FIG. 3 is a perspective explanatory schematic diagram showing the operation of the storage box (embodiment) of the present invention.

FIG. 4 is a schematic diagram showing the shape of a paperboard that becomes a storage box of the present invention.

5A and 5B are schematic views showing a conventional storage box.

[Explanation of symbols]

 1 Front plate 2 Bottom plate 3 Rear plate 4 Lid plate 5 Cover lid piece 6 Opening piece 7 Auxiliary side plate 8 Side plate 9 Local joint 10 Cutting line 11 Side cover lid piece 12 Caulking claws for fixing cutting tools 13 Auxiliary side lid piece 20 Storage Chamber 21 Presser plate K Cutting tool (saw blade made of metal) R Film in rolled layer F Film

Claims (4)

[Claims] 1. A storage chamber 20 for storing a winding layer wrap film R is formed by a front plate 1, a bottom plate 2, a rear plate 3, and a side plate 8, and the rear plate 3 is arranged in a direction to cover an opening of the storage chamber 20. The lid plate 4 extends from the upper edge of the lid plate 4, the covering lid piece 5 extends from the leading edge of the lid plate 4 in a direction to cover the front plate 1, and the cutting tool K is fixed to the tip of the covering lid piece 5. 4 is a rectangular box body having a holding plate 21 that is located on the back side of the front plate 1 and extends from the upper edge of the front plate 1 toward the storage chamber 20 side, and draws the required amount of film from the stored winding layer wrap film R. In a storage box for a wrap film which is cut by a fixed cutting tool K and used, a longitudinal center portion (M of the opening of the storage chamber of the pressing plate 21)
Width (X1) in 1) is 87% to 54 of the opening width of the storage chamber
%, The width (X3) at both longitudinal sides (M3) of the opening is 44% to 11% of the width of the opening, (M1) and (M3)
The width (X2) at the middle point (M2) is 70% of the opening width.
Is 32%, the widths X1, X2, and X3 satisfy the relationship of the following general formula (1), the pressing plate 21 forms a mountain-shaped leading edge, and the pressing plate 21 has a rear surface thereof. A storage box for a wrap film, characterized in that it extends from the edge of the front plate 1 toward the storage chamber 20 so that the angle formed between the front plate 1 and the back surface of the front plate 1 is 92 to 125 degrees. X1>X2> X3 (1) 2. The storage box for a wrap film according to claim 1, wherein the area of the holding plate 21 is 70 to 30% of the total area of the storage box opening. 3. The pressing plate 21 has a shape in which a portion having a length of 7 to 13 mm from both side ends in the longitudinal direction of the opening of the storage chamber is cut out with an inclination of 60 to 40 degrees. Wrap film storage box. 4. The storage box for a wrap film according to claim 1, wherein the holding plate 21 has an elongated embossed surface.