JP2006111342A - Easily openable paper case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easily openable paper case whose body part does not easily swell when stacked vertically and which is opened speedily by one opening action without hurting the finger or hand. <P>SOLUTION: This easily openable paper case has an inner flap on both ends of a pair of side panels and an outer flap on both ends of a top panel and a bottom panel. One cut line is formed laterally on each of the side panels and the flaps. One cut line is formed laterally roughly at the center of the top panel, and on the cut line at least one easily breakable finger insertion part with a circumjacent cut line is formed. The folding width of the outer flap of the bottom panel is formed narrower than or the same as that of the outer flap of the top panel. The folding width of the inner flap of the pair of side panels is wider than that of the outer flap of the top panel and is shorter than a half of the folded line length of the top panel. By inserting a finger or a hand in the finger insertion part for pulling up, the top half of the case is removed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to an easily openable paper case, and more particularly, easily openable so that the upper half of a paper case made of cardboard or cardboard that contains and seals an article (product) for sale can be easily opened and removed. Regarding paper cases.

  Conventionally, various paper case structures have been proposed in order to facilitate removal of products (canned food, bottled food, other packaged foods, etc.) in a sealed paper case from the paper case. For example, there is a type in which a cutting tape is attached around the body of a cardboard box, paper is cut with the tape, and the upper half of the case is removed. (Patent Document 1 Japanese Patent Laid-Open No. 06-293332) Such a cut with a tape for cutting requires a large force and has a drawback that the manufacturing cost of the paper case increases.

  Patent Document 2 (Japanese Patent Laid-Open No. 7-329955) discloses a technique in which a front liner can be broken by pulling an opening band formed by making two cuts in the front liner. Although this technique does not require a great deal of force to break, there is a problem that the manufacturing cost of the case is high because processing on a corrugator is required.

  Further, in Patent Document 3 (Japanese Patent Laid-Open No. 2000-238755), when the entire corrugated cardboard sheet is punched, an opening region is formed in a band shape by inserting two partial cut zipper wires. The case where the front liner of the case can be broken by pulling on is disclosed. Cases with this structure do not require much force to break, but because the two cut zipper wires are located in the area where the case is prone to occur due to the stacking of cases, Therefore, there is a drawback that the commercial value is reduced in appearance. Also, it may be difficult to work by pulling and cutting the zipper wire at the bulged portion.

  When opening the paper case according to the above-described conventional technology, it is necessary to perform a plurality of operations of removing the contents by removing the upper part after breaking along the circumference of the case. There was a risk of cutting the finger at the edge of the paper.

Japanese Patent Laid-Open No. 06-293332 JP 7-329955 A JP 2000-238755 A

  The present invention has been made in view of the above-mentioned various problems, abolished cutting tape that causes high costs and finger cuts, etc., without causing swelling when the case is stacked, in a single opening operation, It is an object to provide an easily openable paper case that can be opened quickly without fear of a finger cut.

  That is, as a means for solving the above problems, the easy-open paper case of the present invention is a paper case in which inner flaps are provided at both ends of a pair of side plates and outer flaps are provided at both ends of the top plate and the bottom plate, Each side plate and flap are provided with a single cut line in the lateral direction, and a single cut line is provided in the substantially central lateral direction of the top plate, and a cut line is provided around the cut line. At least one finger insertion portion that is easy to break, and the bent width of the outer flap of the bottom plate is smaller than or equal to the bent width of the outer flap of the top plate, and the inner flaps of the pair of side plates The folding width of the top plate is larger than the folding width of the outer flap of the top plate and smaller than ½ of the length of the vertical folding line of the top plate. The upper half of the paper case can be removed by pulling it upward. .

  With this configuration, when opening the paper case, the fingertip can be easily inserted into the finger insertion part of the top plate, and the fingertip is hooked on the back side of the top plate and pulled upward, The upper half can be split along the cut lines provided in the lateral direction of the side plates and the flaps and divided into the lower half. At that time, the folding width of the inner flaps at both ends of the side plate glued to the bending widths of the outer flaps provided at both ends of the bottom plate is smaller than 1/2 of the length of the folding line in the vertical direction of the top plate. The inner flap of the side plate is not glued to the entire outer flap of the top plate and the bottom plate. That is, since there is a portion without gluing (no inner flap) in the vicinity of the inside where the cut line of the flap portion of the top plate is provided, the split splitting is substantially divided between the top plate, its outer flap and the side plate. This can be achieved by cutting along the respective cut lines of the flap. Therefore, the upper half of the paper case can be easily opened with a small force.

  Since the easily openable paper case of the present invention has the above-described configuration, the work efficiency that can be opened by one operation of hooking and pulling the back side of the top plate on the fingertip is improved. In addition, it does not have a structure that uses a cutting tape or puts two incised zipper wires into a band in the case body as in the conventional case. It can be manufactured as a product that looks good and has high commercial value.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing an embodiment of an easily openable paper case of the present invention. 2 is a perspective explanatory view showing a state where one side of the upper half of the paper case of FIG. 1 is opened, and FIG. 3 is a development view of FIG. As shown in FIGS. 1 and 2, the easy-open paper case 1 according to the embodiment of the present invention includes a pair of side plates 4A, 4B, a top plate 2, a bottom plate 3, and inner flaps 4A ', 4A', 4B at both ends of the side plates. ', 4B', outer flaps 2B, 2B on both ends of the top plate, outer flaps 3B, 3B on both sides of the bottom plate, and a pasteboard piece 6.

  Each side plate 4A, 4B and inner flaps 4A ', 4A', 4B ', 4B' at both ends thereof are provided with cut lines 5B, 5B one by one in the lateral direction. In addition, one notch line 5A is provided in a substantially central lateral direction of the top plate 2, and two finger insertion portions 8 are provided on the notch line 5A with the notch lines 5C around the notch line 5A. .

  Further, the outer flaps 3B, 3B of the bottom plate 3 are formed such that the bending widths β, β are smaller than the bending widths γ, γ of the top plate 2, as shown in the developed view of FIG. The folding widths α, α, α, α of the inner flaps 4A ′, 4A ′, 4B ′, 4B ′ of the side plates 4A, 4B are formed to be significantly larger than the outer flaps 2B, 2B of the top plate 2. However, the maximum width is set to a length (width) not exceeding 1/2 of the length of the folding lines 7B, 7B in the vertical direction of the outer flaps 2B, 2B of the top plate 2.

  With this structure, when assembled as the case 1, the inner flaps 4A ', 4A', 4B ', 4B' at both ends of the side plates 4A, 4B are connected to the outer flaps 2B, 2B of the top plate 2 and the bottom plate 3, respectively. The outer flaps 3B and 3B of the outer flap 3B are bonded together with the entire surface overlapped, and the both sides of the cut line 5A provided on the outer flap 2B of the top plate 2 are bonded as blank portions. This is because when the case 1 is opened as shown in FIG. 2, the cut line 5A, the side plates 4A, 4B and the inner flaps 4A ', 4A', 4B provided on the top plate 2, the outer flaps 2B, 2B. It can be easily achieved by sequentially cutting the cut lines 5B and 5B provided on the ′ and 4B ′. That is, the tearing path is such that the fingertip is inserted into the finger insertion portion 8 and the top plate 2 is pulled upward, whereby the top plate 2, the outer flaps 2B and 2B, and the inner flaps 4A 'and 4A of the side plates 4A and 4B. It progresses along the cut lines 5A and 5B in the order of ', 4B' and 4B '. In the present embodiment, two finger insertion portions 8 of the paper case 1 are provided. However, the present invention is not necessarily limited to this. In addition, although the case of opening the half of the top plate 2 is shown in FIG. 2, it is needless to say that the upper half of the paper case 1 can be fully opened in one operation. It is.

  Further, the paper case 1 of this embodiment is a rectangular parallelepiped having a length of 240 mm, a width of 260 mm, and a height of 85 mm. The folding widths α, β, and γ of the flaps in FIG. 33 mm and γ are 55 mm.

  The perspective view which shows one Embodiment of the easily openable paper case by this invention.   FIG. 3 is an explanatory perspective view showing a state where the upper half of the easy-open paper case of FIG.   FIG. 2 is a development view of the easy-open paper case of FIG. 1.

Explanation of symbols

1 Easy-openable paper case 2 Top plate 2B Top plate outer flap 3 Bottom plate 3B Bottom plate outer flap 4A, 4B Side plate 4A ', 4B' Side plate inner flap 5A, 5B Cut line 5C Finger insert surrounding cut line 6 Glue piece 7 Folding curve 7A Horizontal folding curve 7B Longitudinal folding curve 8 Finger insertion part K Article

Claims (1)

  In a paper case in which inner flaps are provided on both ends of a pair of side plates and outer flaps are provided on both ends of the top plate and the bottom plate, one cutting line is provided in the lateral direction of each side plate and flap, and the top plate A cut line is provided substantially in the lateral direction of the center of the base plate, and at least one easy-to-break finger insertion part with a cut line is provided on the cut line to fold the outer flap of the bottom plate. The width is formed to be smaller than or equal to the bent width of the outer flap of the top plate, the bent width of the inner flap of the pair of side plates is larger than the bent width of the outer flap of the top plate, and It is formed to be smaller than 1/2 of the length of the folding line in the vertical direction, and the upper half of the paper case can be removed by inserting a finger into the finger insertion part and pulling upward. Easy-open paper case.

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