JPS6122824Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a wrap film storage box mainly used at home.

BACKGROUND ART Wrap films made of thin synthetic resin films are currently widely used in households mainly as food packaging for storing food in refrigerators and preventing food contamination in the atmosphere. Such wrap film is usually sold by winding it around a cylindrical tube made of cardboard to a length of 10 to several tens of meters and storing it in a parallelepiped box made of cardboard. A saw blade-like cutter is attached to one longitudinal edge of the box, and the user cuts out a part of the box along a pre-set cut line, then cuts the cutter there. The required amount of film is pulled out and cut with the cutter mentioned above.

Therefore, even though the above-mentioned serrated cutter is a cutter, its sharpness is not always satisfactory.

This is because in conventional cutters, the amount of protrusion of the blade from the ridgeline of the storage box body was uniform, and the pitch of the blade was the same, so the cutting resistance when cutting the film was not constant. . That is, the cutting resistance is high at both end portions in the longitudinal direction of the film, and the cutting resistance is low at the central portion. Therefore, when cutting the film, the film is often torn and the film must be cut again.

The present invention was made to solve the above-mentioned problems, and its purpose is to reduce the amount of protrusion of the saw-shaped cutter blade from the ridgeline of the storage box body at both left and right ends. By making the blade higher and lowering it in the center to make it curved, and by making the pitch of the blade smaller at both left and right ends and larger at the center, the cutting resistance is constant when cutting the film. To provide a wrap film storage box body having a good cutter.

Hereinafter, the details of the present invention will be specifically explained with reference to the drawings.

Fig. 1 is a perspective view showing an example of a conventional wrap film storage box, Fig. 2 is a cross-sectional view perpendicular to its longitudinal direction, Fig. 3 is an enlarged view of the cutter portion, and Fig. 4 is the present invention. FIG. 5 is a sectional view taken at right angles to the longitudinal direction, and FIG. 6 is an enlarged view of the cutter portion thereof.

Therefore, the conventional wrap film storage box body is
As shown in FIGS. 1, 2, and 3, a wrap film 101 wound around a tube 102 is stored inside the box, and the box itself is made by folding a piece of cardboard, and the longitudinal sides 1, 2, 3, 4 and end faces 9, 9'. Therefore, the connecting portions of each longitudinal side surface are longitudinal ridges a, b, c, bent at right angles.
d. A slight gap is formed between the final end of the side surface 4 and the inner surface of the side surface 1, and this gap serves as an opening 40 through which the film 101 is pulled out. The surface 5 connected to the side surface 1 is bent at the ridge a to form a cover piece that covers the opening 40 and the outer surface of the surface 4, and when manufactured and sold, the inner surface of a predetermined area 5' is opened from its free end. It is glued to the outer surface of surface 4 to close the box. This closure piece 5' has interrupted score lines 51,
It can be separated from the cover piece 5 by 51,
After purchase, the user peels off the closing piece 5' from the surface 4 to open the cover piece 5. 52,
52 is a semicircular notch provided in the closing piece 5', and by applying glue to only the back side of this part and adhering it to surface 4 during manufacturing, the back side of the closing piece 5' is required when peeling off. This prevents it from being torn and remaining unsightly attached to the surface 4.
On the longitudinal ridge d of the side surface 3, a saw-blade-shaped cutter 6 whose blades protrude from the ridgeline of the storage box body by the same amount and whose pitch is the same is attached with the blade slightly protruding from the surface. There is.

Therefore, when using wrap film,
The end portion 101' of the film 101 is taken out from the opening 40, pulled out to a desired length while being sandwiched between the side surface 4 and the cover piece 5, and cut with a cutter 6. When the cutter 6 installed on the body is used, the film 101
Since the cutting resistance is large at the beginning of cutting, a large tensile force must be applied to the film 101. However, once a cut is made in the film 101, the cutting resistance rapidly decreases in the central part, so the film 101 is torn rapidly, and when the film 101 is finally cut, a large cutting resistance is suddenly applied. If the film 101 were to be cut all at once, the film 101 would not be cut accurately and may be torn or wrinkled. Therefore, when attempting to cut the film 101 in a straight line, it is necessary to cut the film 101 little by little. Further, since a large tensile force was required when starting to cut and separating the film 101, the box was often crushed before the film 101 was used up to the end.

In order to eliminate such drawbacks, the present invention replaces the conventionally used cutter with the same protrusion from the ridgeline of the blade storage box body and the same pitch of the blade, and instead uses a cutter with a curved cutting edge line and a large protrusion at both ends. In addition, a curved cutter is used that is manufactured so that the pitch of the blades at both ends is smaller than that of the blades at the center, so that the cutting resistance is uniform. That is, as shown in FIGS. 4, 5, and 6, the cutter 6' is attached to the longitudinal edge d of the side surface 3 of the box.
The blade is attached with the blade slightly protruding from the ridgeline.

Then, the end 101' of the film 101 is taken out from the opening 40, pulled out to a desired length while being sandwiched between the side surface 4 and the cover piece 5, and cut with the cutter 6'. ' is manufactured as described above, so that the cutting resistance when cutting the film 101 is approximately uniform as a whole;
The sharpness of the film 101 is greatly improved, and there is no need to tear the film 101 as in the past. In addition, since the cutter 6' is symmetrical, it can be used by both right-handed and left-handed people.Furthermore, the cutter 6' can be cut without applying excessive tension to the film 101, so it can be used for the box body. Even if the paper used is of conventional thickness and quality, it has superior strength in use compared to conventional products, is easier to use, and can be assembled and manufactured just as easily and at low cost.

Since the present invention is constructed as described above, the present invention makes it possible to reliably cut the wrapped film to a desired length, thereby eliminating waste of the wrapped film, and furthermore, applying a strong tensile force to the film during cutting. Since there is no need to add any additional material, there is no possibility of the box being crushed.

Note that the configuration of the present invention is not limited to the above-mentioned embodiments. That is, for example, in this embodiment, a curved serrated cutter is attached to a wrap film storage box of a conventional shape, but a storage box of other shapes may also be used. It can also be used for aluminum foil, and the present invention encompasses all of them.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional wrap film storage box, Fig. 2 is a cross-sectional view perpendicular to its longitudinal direction, Fig. 3 is an enlarged view of the cutter portion, and Fig. 4 is the present invention. FIG. 5 is a sectional view taken at right angles to the longitudinal direction, and FIG. 6 is an enlarged view of the cutter portion thereof. 1, 2, 3, 4... Longitudinal side surface, 5... Cover piece, a, b, c, d... Longitudinal ridge portion, 6, 6'
... cutter, 40 ... opening, 101 ... wrap film, 102 ... tube.

Claims (1)

[Scope of Claim for Utility Model Registration] A wrap film storage box body for storing a wrap film wound around a cylindrical tube, the wrap film storage box body having a saw blade-like cutter on the longitudinal ridge, the above-mentioned storage of the cutting edge of the cutter. The amount of protrusion from the ridgeline of the box body is increased at both longitudinal ends of the cutter.
The wrap film storage box described above is characterized in that the cutter blade is made smaller at the center, and the pitch of the cutter blade is made smaller at both longitudinal ends of the cutter and larger at the center.