JP4207545B2 - Belt-like opening structure and cardboard box or paper box provided with the opening structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a band-shaped opening structure used for an opening of a paper container such as a paper box, and more particularly to a band-shaped opening structure having a rounded cut end and a cardboard box or a paper box provided with the opening structure.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, one of the opening structures of a paper container such as a paper box is a belt-like structure (100) in which two perforated cut lines are provided in parallel at the opening of a paper box as shown in FIGS. A paper box having such an opening structure is called a carton with a zipper and is often used as a container for storing confectionery, frozen food, and the like.
[0003]
However, as shown in FIG. 6, this type of unsealing structure has a portion (t) that connects a bent-shaped bent line (3) formed by a combination of a straight horizontal line (1) and a diagonal line (2) at one end thereof. After the strip-like structure of the paper box is removed when the paper box is opened by pulling the belt-like structure (100), the contents are taken out, and the paper box is disassembled. Since the tip portion (101) of the cut edge is an acute angle, there is a risk of injury when touching the hand, especially in the case of thick paperboard or hard paperboard (see FIG. 7).
[Problems to be solved by the invention]
[0004]
The present invention has been made to solve the above-described problems related to the conventional belt-like opening structure, and has the same opening function and strength as those of the conventional belt-like opening structure, and is also useful when disassembling a paper box. It is an object of the present invention to provide a band-shaped opening structure having a structure that must be painful and a cardboard box or a paper box provided with the opening structure.
[0005]
[Means for Solving the Problems]
In the invention of claim 1 of the present invention, an opening portion such as a paper box or the like is continuously formed with a cross-sectionally bent line of a dogleg shape, which is a diagonal line bent inward with the leading end side of a linear horizontal line inward. In the band-shaped opening structure in which the arranged cut lines are intermittently provided in the same phase and regularly arranged in two rows in parallel, the end portion of the horizontal line of the bent line curves from the horizontal line toward the outside of the band-shaped opening structure The tip portion of the oblique line forms a tip curve portion that curves in a curve from a direction toward the inside of the band-shaped opening structure to a direction toward the outside of the band-shaped opening structure, An extension line extending from the tip is formed so as to intersect with the curved bent portion at the end of another bent line adjacent to each other via a connecting portion, so that the bent line is formed in a shape of a deformation 3. The bending line is continuous through the connecting portion. Lined Te, the position of the horizontal lines of the bent line is strip-like opening structure, characterized in that provided on a straight line parallel two rows.
[0006]
As described above, according to the first aspect of the present invention, the curved cut line in which the front end portion and the end portion are bent along the opening direction at the planned opening portion of a paper box or the like is intermittently provided at the same phase. Since it is provided in parallel with the row, when the band-like opening structure is broken and opened, the cut portion of the container portion of the paper box excluding the band is rounded and it does not hurt when pushed by hand.
[0008]
Further, according to the present invention, Kuno-shaped bent wire, previously formed end portion and a distal portion with shaped deformation 3 bent outside the strip-shaped opening structure, wherein the shape of the deformation 3 Since the horizontal line is continuously arranged with the connecting part in the same direction so that the horizontal line is on the same line, the opening of the container part of the paper box excluding the belt-like opening structure is rounded and opened manually It doesn't hurt when touched.
[0009]
Further, the invention of claim 2, in the invention of claim 1, wherein the two consecutive side-by-side bending line is provided vertically symmetrically with respect to the transverse center line of the strip-shaped opening structure This is a band-shaped opening structure.
[0010]
Thus, according to the invention of claim 2, the two consecutive side by side bending line, so provided vertically symmetrically with respect to the transverse center line of the strip, perforations strip-shaped opening structure When it is torn along the cut line, the opening appears neatly in parallel.
[0011]
The invention of claim 3 is a cardboard box or a paper box in which the band-like opening structure according to claim 1 or 2 is provided in a planned opening portion.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The band-shaped opening structure of the present invention will be described in detail below based on one embodiment.
As shown in FIG. 1, for example, as shown in FIG. 1, the belt-shaped opening structure (10) of the present invention has a curved cut line (bending a tip portion and a terminal portion along the opening direction in a planned opening portion such as a paper box (20). 3) has a structure in which two rows are intermittently provided in the same phase and regularly in parallel.
[0013]
More specifically, as shown in FIGS. 1 and 2, for example, as shown in FIG. 1 and FIG. 2, the curvilinear cut line (3) includes a straight horizontal line (1) and the horizontal line. A character-shaped bending line (3) in which the character-characters in combination with the oblique line (2) at one end are arranged side by side so that the oblique line is located on the inner side, and the bending line is a bent part In (4), it bends in a curved shape, and both the front end portion (5) and the end portion (6) are formed in the shape of a deformation 3 bent outward with respect to the opening direction indicated by the arrow.
Moreover, it is a strip-shaped opening structure (10) provided continuously with a connecting portion (t) interposed in the same direction so that the horizontal line (1) of the deformation 3 is aligned on the same line.
[0014]
The band-shaped opening structure of the present invention will be described in more detail with reference to FIGS. 2 (a) and 2 (b).
In other words, a band-shaped opening structure in which the distal end portion (5) and the distal end portion (6) are each along the opening direction of the bent-shaped bent line in which the cut lines are continuously arranged side by side. Bent outwardly with respect to (10) (R ₁ , R ₂ ), and the bent portion (4) is also rounded (R ₃ ) and changed to the shape of deformation 3.
[0015]
By doing in this way, the distance (L ₁ ) between the front end portion and the end portion of the adjacent cut line is equal to the distance (L ₂ ) between the front end portion and the end portion of the adjacent cut line of the conventional band-shaped opening structure. (L ₁ = L ₂ ), and the same opening function and opening strength as the conventional opening structure are ensured.
Further, after opening, as shown in FIG. 3, the cut opening (21) is rounded, so that the hand does not hurt even when touched, and a so-called barrier-free opening structure is obtained.
[0016]
Further, a cardboard box or a paper box provided with an opening structure in which the cut end is rounded in the planned opening portion is useful without damaging fingers when disassembling.
In the case of a paper container using a thick and hard paperboard or cardboard, the effect is particularly remarkable.
[0017]
The strip-shaped opening structure of the present invention may be provided horizontally or obliquely with respect to the outer peripheral surface of the paper box or cardboard box.
[0018]
【The invention's effect】
As described above, the band-shaped opening structure of the present invention has a round cut surface, so it does not hurt even if you touch your fingers, and can be used safely on the side of a paper box or cardboard box or on the top of the top. It is.
[Brief description of the drawings]
FIG. 1 is an explanatory plan view showing an embodiment of a paper box provided with a band-shaped opening structure of the present invention.
FIG. 2 (a) is an explanatory plan view showing, in an enlarged manner, an embodiment of the band-shaped opening structure of the present invention.
(B) is a plane explanatory drawing which expands and shows the opening structure of the conventional strip-like structure shown corresponding to (a).
FIG. 3 is an explanatory plan view showing a state of a cut portion when a paper box provided with a band-like opening structure of the present invention is opened.
FIG. 4 is a perspective explanatory view showing an example of a paper box provided with a conventional band-shaped opening structure.
FIG. 5 is a perspective explanatory view showing a state where the paper box is opened by breaking the strip-like opening structure of the paper box of FIG. 4;
FIG. 6 is an enlarged plan view illustrating an example of a conventional belt-shaped opening structure.
7 is an explanatory plan view showing a state in which the band-shaped opening structure of FIG. 6 is broken. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Straight horizontal line 2 ... Diagonal line 3 ... Bending line, curved cut line 4 ... Bending part 5 ... Tip part 6 ... End part 10 ... Strip-shaped opening structure 20 ... Paper box etc. Paper container 21... Tip portion 100 of the cut end of a paper box etc. Conventional band-shaped opening structure 101... Tip end portion t of the cut end of a paper box etc..

Claims (3)

Lines of cuts that are arranged in a row with the shape of a bent-shaped bent line on the side of the opening of a paper box, etc. In the band-shaped opening structure provided in two rows regularly, the end portion of the horizontal line of the bent line bends in a curved shape from the horizontal line toward the outside of the band-shaped opening structure, and the tip portion of the oblique line is A tip curve portion bent in a curved line from the direction toward the inside of the band-shaped opening structure to the direction toward the outside of the band-shaped opening structure, and an extension line extending from the tip of the tip curve portion connects the connecting portion. The bent line is formed in the shape of a deformed shape 3 so as to intersect with the curved bent portion at the end of another bent line that is adjacent to the bent line, and the bent line connects the connecting portion. Of the bent line Band-like opening structure, wherein a position of the serial horizontal lines are provided on a straight line parallel two rows. The two consecutive side-by-side bending line, characterized in that it is provided vertically symmetrically with respect to the transverse center line of the strip-shaped opening structure, band-shaped unsealing structure of claim 1 Symbol placement . A cardboard box or a paper box in which the band-like opening structure according to claim 1 or 2 is provided in a planned opening portion.

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