JPH0577023U - Cardboard box unpacking mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] Corrugated cardboard that can be opened neatly with one touch, without tearing the band when opening the unsealing part such as the top surface or wall surface in a strip shape with a certain width and unpacking. Providing a box. In a corrugated box in which the contents are taken out by slicing along a pre-formed band-shaped rupture part 20, the band-shaped rupture part is composed of two adjacent and parallel cut lines 21, 21. At the same time, the interval L between the two cut lines is formed so as to gradually decrease from the pulling start end of the band-shaped cut portion toward the end.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a corrugated ball box for transporting and storing a plurality of liquid beverages and foods such as canned beer and canned cola, and other products contained in small boxes made of paper or plastic. Therefore, it relates to a cardboard box that can be opened neatly with a single touch after the transportation.

[0002]

[Prior art and its problems]

 Canned beer, canned juice, and canned coffee are transported, stored, or handled as packed in wrap-round or set-up packaging boxes, and at retail stores, etc. Products are placed for display in stores and loaded, or loaded into vending machines for sale. In order to facilitate the opening of the conventional packaging box, a cut line is provided at the opening portion so that a clerk or the like can quickly open the packaging box at the time of unpacking. Known cut lines include perforations, zippers, and half cut lines. The cut lines on the corrugated box are often perforated. In both cases, two parallel but adjacent cutting lines a and a were provided in the opening part, and the opening part such as the top surface or the wall surface was torn in a strip shape with a considerable width to unpack (Fig. 4).

However, when the band-shaped tear portion is torn and opened, as shown in FIG. 5, when a cut line is started to be cut from the cut-out port c along two cutting lines a, a, as shown in FIG. Since a pulling force acting inward is exerted, it is easily broken at an inner position outside the cutting line, and the band b becomes thin gradually. The part that is off the cutting line has a large sheet thickness and high strength, so that the band b is often torn off on the way and the purpose of unpacking cannot be achieved.

In order to avoid such a problem, the present invention does not cut the strip in the middle when tearing the opening portion such as the top surface or the wall surface into a strip shape with a considerable width without uncutting. And, it is intended to provide a cardboard box that can be opened neatly.

[0005]

[Means for solving problems]

 The present invention relates to a corrugated cardboard box in which the contents are taken out by slicing along a pre-formed band-shaped slit, and the band-shaped slit is composed of two adjacent and parallel cut lines. At the same time, the interval L between the two cut lines is formed so as to gradually decrease from the pulling start end of the strip-shaped cut portion toward the terminal end.

[0006]

[Action]

 Therefore, when tearing and opening the above-mentioned band-shaped tearing part, pulling the cutting start end of the band and starting to cut the cut line, a pulling component force inward acts on the cut band, but the interval of the cut line is band-shaped cut. It is formed so that it gradually decreases from the pulling start end to the terminating end of the cracked portion, in other words, since the cut line is formed in the direction in which the tensile component force acts, the tearing portion is led to the line and the tearing portion is cut. It can be cut cleanly and quickly, and the cardboard box can be opened with one touch without the band being cut in the middle.

[0007]

【Example】

 Next, the present invention will be specifically described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention with a part cut away, FIG. 2 is a perspective view showing an example of the same when opened, and FIG. 3 is a developed view of the same.

In FIG. 3, reference numeral 10 denotes a sheet blank for constructing the corrugated board box of the present invention, and reference numerals 11 to 14 are outer wall plates partitionally connected to the blank in one direction. In terms of individual functions, they constitute a top plate 11, side plates 12, 14, a bottom plate 13, and a connecting piece 15, respectively. The connecting piece 15 is for connecting the outer wall plates 11 to 14 in a rectangular tube shape. Reference numerals 16 and 18 are relatively short outer flaps connected to both end edges of the top plate 11 or the bottom plate 13, and 17 and 19 are inner flaps connected to both end edges of the side plates 12 and 14.

By the way, according to the present invention, the strip-shaped cut portion 20 having the following configuration is provided on the side plates 12 and 14 and the inner flaps 17 and 19 connected to both end edges thereof. That is, the strip-shaped cut portion 20 is composed of two closely adjacent cut lines 21 and 21 along the longitudinal direction of the side plates 12 and 14, and the interval L between the two cut lines is set to the strip-shaped cut portion. It is formed so that it gradually decreases from the pulling start end to the end. By the way, reference numeral 23 is a cutout forming the pulling start end, which is substantially I-shaped. The cut-off port of the illustrated embodiment is formed in the direction substantially perpendicular to the cut line at the substantially central portion of the band-shaped cut portion formed by the cut lines 21, 21. Further, reference numeral 24 is a 45 degree cut line formed in the corner portion of the outer flap 16.

The cut line is formed by either a perforation provided through the front and back of the corrugated board, a zipper, or a half-cut line formed by cutting the corrugated board up to about half the thickness of the corrugated board.

When assembling a cardboard box by the wrap round method using the blank 10, first, a predetermined number of products such as canned beer are placed in an aligned state on the bottom plate 13 of the expanded cardboard blank 10. Next, both side plates 12 and 14 are raised perpendicularly to the bottom plate 13, and then folded so as to wrap them on the product in which the top plate 11 is integrated, and connected to the connecting piece 15 by hot melt to form a rectangular tube. After connecting, the inner and outer flaps 16, 17, 18, and 19 are sequentially bent inward to close the opening surface of the rectangular tubular body. In this case, it is preferable to spot the outer portion of the cut line 24 provided on the outer flap 16 on the inner flap 19 with hot melt.

When taking out a product such as canned beer from the inside of the box thus formed, the cut opening 23 provided on the side surface is pinched to cut and open the band-shaped tear portion 20. At this time, when the cut start end is pulled and the cut line 21 is started to be cut, a tensile component force that acts inward is applied to the cut strip, but the cut line has a gap L extending from the pull start end to the end of the strip-shaped cut portion. Since it is formed so that it gradually decreases, the tearing part can be neatly cut by being led by the cut line, and the band part is not cut in the middle. Then, the cut line 24 provided on the outer flap 16 is cut and the top plate 11 is opened upward using the connecting piece 15 as a hinge portion, and the top surface of the cardboard box is opened by one touch as shown in FIG. You can open the ceremony.

It should be noted that, when the above-mentioned one-sided top plate is closed and resealed, it is convenient for taking out the stored product in small quantities, avoiding the storage product from being soiled and allowing dust or the like to enter inside. Can be prevented.

When a product is displayed in a store with a cardboard box put therein, the lower tray and the canopy are separated. At this time, the cut-outs 23 provided on both side plates are picked and the band-shaped tear portion 20 is cut and opened (see FIG. 1), or the hot melt-adhered portions of the point plate 11 and the connecting piece 15 are peeled off. You may.

[0015]

[Effect of the device]

 As described above in detail with reference to the embodiments, the present invention relates to a corrugated cardboard box in which the contents are taken out by cutting along the preformed band-shaped slits, and the two band-shaped slits are provided. Of adjacent cut lines that are parallel to each other, and are formed so that the distance between the two cut lines is gradually reduced from the pulling start end to the terminating end of the band-shaped cut portion. That is, since the cut line is formed in the direction in which the tensile component force acts on the strip-shaped cut portion, the tear portion can be cut cleanly and quickly by being led by the cut line. Therefore, it is possible to avoid the disadvantage that the strip portion is cut off on the way as in the conventional case, and the unpacking work is significantly easier than the conventional case.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing an example of the same when opened.

FIG. 3 is a development view of the same as above.

FIG. 4 is an explanatory diagram showing a form of a conventional cut line.

FIG. 5 is an explanatory diagram showing the behavior of the cut line of FIG. 4 when opening.

[Explanation of symbols]

 10 Sheet Blank 11 Top Plate 12 Side Plate 13 Bottom Plate 14 Side Plate 15 Connecting Piece 16 Outer Flap 17 Inner Flap 18 Outer Flap 19 Inner Flap 20 Strip Cut 21 Cut Line 23 Cut Out 24 Cut Line

Claims (3)

[Scope of utility model registration request] 1. A corrugated cardboard box in which the contents are taken out by slicing along a pre-formed band-shaped rupture, and the band-shaped rupture is composed of two closely adjacent cut lines. An unpacking mechanism for a corrugated cardboard box, characterized in that the interval L between the two cut lines is formed so as to gradually decrease from the pulling start end of the strip-shaped cut portion toward the end. 2. A top plate, a bottom plate, two side plates and a connecting piece are provided in one direction, and inner and outer flaps of relatively short length are provided at both end edges of the top plate, the bottom plate and the two side plates. And projecting at least one of the two side plates and an inner flap provided on both end edges thereof to form a band-shaped cut portion, and the band-shaped cut portion is placed close to each other. A corrugated cardboard box, which is composed of parallel cut lines and is formed such that a distance L between the two cut lines is gradually reduced from a pulling start end of the strip-shaped cut portion toward an end thereof. 3. The corrugated cardboard box according to claim 2, wherein a substantially I-shaped cutout is provided at a substantially central portion of the band-shaped cut portion in a direction perpendicular to the cut line.