JPH076121U - Cardboard box - Google Patents

Abstract

(57) [Abstract] [Purpose] A box made of cardboard having an easily breakable structure on the opposite end surfaces for folding the box body flat after use. To provide a box that does not cause flaps to be bent or broken. [Structure] An inverted C-shaped easy break line reaching the approximate center of the flap is formed from both ends of the outer margin of the outer flap forming opposite ends of the rectangular box, and the outer top of the outer bottom flap is formed. The margin for the flap was surrounded by a half-cut line, and the fold curve part of the inner flap was formed by a face digging fold curve and a half-sewing line. [Effect] The inner upper flap and the outer lower flap can be separated with a light force without erroneous bending or breakage of the inner flap during the high-speed fully automatic assembly process.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a box that can be easily folded flat with fingers and discarded after use of a large paper clip, office supplies case such as rubber bands, and other boxes made of cardboard.

[0002]

[Prior art]

 As shown in Japanese Utility Model Publication No. 2-1272, the thickness of the outer flaps at both ends in the length direction of the cardboard box is a flat cardboard box that can be flatly folded and discarded after use. Over the years, it has been proposed to insert a sewing machine wire for cutting, but in the high-speed fully automatic assembly process, the flap is highly likely to be bent or cut at the sewing machine wire portion, and There is a problem that a relatively large force is required to peel off the portion where the flap and the outer flap are attached.

[0003]

[Problems to be solved by the device]

 In view of the above-mentioned problems of the conventional cardboard box, the present invention provides a high-speed, fully-automatic, high-strength automatic line on the easily breakable line portion formed on the outer and lower flaps to separate the outer and upper flaps that are attached. The upper and lower outer flaps can be easily separated without bending or breaking during the assembly process, and the inner and outer flaps can be peeled off with a light force. At the same time, it is an object to provide a cardboard box that allows the inner flap to be bent at the correct position during the folding process.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the invention of claim 1, at both ends in the length direction of a rectangular box body made of cardboard, the left and right inner flaps folded from the left and right side walls of the box body are provided with bottoms of the box body. The outer lower flap folded back from the wall is attached, and the outer upper flap folded back from the top wall of the box is attached to the box attached to the outer surface of the upper side of the inner flap and the outer lower flap. Added configuration.

That is, a glue margin is formed in a portion of the outer surface of the outer lower flap that is covered by the lower edge of the outer upper flap, and a reverse edge that extends from approximately both ends of the glue margin to approximately the center of the outer lower flap. Character-shaped easy-break lines are formed, and the lower ends of both easy-break lines are the ends of the horizontal part of the slit for forming the inverted U-shaped finger hook hole that is formed from the approximate center of the outer lower flap downward. It was made to be continuous.

According to the second aspect of the invention, a structure is added in which the margin portion of the inner flap is surrounded by a half cut line.

Further, in the invention of claim 3, a configuration is also added in which a face-drilling folding curve and a half-sewing line are formed in the folding curve portion of the inner flap.

[0008]

[Action]

 According to the first aspect of the present invention, the easy-to-break line that separates the outer upper flap and the outer lower flap that are adhered from each other is formed from approximately both ends of the margin of the outer lower flap to approximately the center of the outer lower flap. Since the easy-to-break line does not horizontally cross the outer-bottom flap, the outer-bottom flap is bent or cut from the easy-to-break line part as in the past during the high-speed fully automatic assembly process. Are removed.

Further, since the slits for forming the finger-holding holes and the inverted C-shaped easy break lines are noticeable visually on the outer lower flap, both ends in the longitudinal direction of the box body can be read without reading the explanation or the like. Help the user understand that the surface can be broken or separated.

Pushing the part surrounded by the slit for forming the finger hook with the fingertip, picking the part surrounded by the easy break line, and pulling it upward and upward easily breaks the easy break line part, Since the ends reach almost both ends of the glue margin of the outer and lower flaps to which the outer and upper flaps are attached, both flaps are separated without the need to peel off the affixed portions of the outer and upper flaps. Peeling of the outer and upper flaps is completed with only a light force that peels off the parts where the flaps and outer and upper flaps are attached.After that, the outer and lower flaps are simply peeled off from the inner flap, and the upper and lower outer flaps and the inner flap are separated. Complete.

According to the second aspect of the present invention, the separation between the upper and lower outer flaps and the inner flap is realized by the delamination of the paper material in the portion surrounded by the half-cut line, so that only a very light force is applied. Is enough.

According to the third aspect of the present invention, it is possible to completely prevent the inner flap from being bent at the vertical half-cut line of the glue portion during the high-speed fully automatic assembly process, and to prevent the inner flap from bending. It can be done in the correct folding line.

[0013]

【Example】

 1, FIG. 2 and FIG. 3 show an example in which the inventions of claim 1, claim 2 and claim 3 are implemented together, and the box body 1 shown as a tissue paper case is the same as the conventional product. The left and right side walls 3 and 4 are connected to the longitudinal side edges of the top wall 2, the bottom wall 5 is connected to one side wall 4, and the outer and upper flaps 6 and 7 are connected to both longitudinal ends of the top wall 2. Further, outer bottom flaps 8 and 9 are connected to both longitudinal ends of the bottom wall 5, and inner flaps 10, 11, 12, and 13 are connected to both longitudinal ends of the side walls 3 and 4.

A glue margin 15 is formed on a portion A of the outer surface of the upper side of the outer lower flaps 8 and 9 covered by the lower side 14 of the outer upper flaps 6 and 7.

An inverted C-shaped easy break line 16 is formed extending from substantially both ends 15A and 15B of the margin 15 to approximately the center of the outer lower flaps 8 and 9. In the illustrated example, the breakable line 16 is a zipper row, but it may be a sewing line.

Further, the lower ends 16A and 16B of the easily breakable line 16 are formed on the horizontal portion 18 of the slit 17 for forming an inverted U-shaped finger hook hole which is formed downward from substantially the center of the outer lower flaps 8 and 9. It is made continuous at both ends.

The folding curve portions 19 and 20 of the inner flaps 10, 11, 12 and 13 are composed of face mining folding curves 21 and 22 and half sewing lines 23 and 24. The folds 19 and 20 are easily bent due to the presence of the half-sewing lines 23 and 24 which are made flexible and are located in the center.

The inner flaps 10, 11, 12, and 13 are formed with a glue margin 25 that is bonded to the outer lower flaps 8 and 9 and a glue margin 26 that is bonded to the outer upper flaps 6 and 7. The generations 25 and 26 are surrounded by half cut lines 27 and 28.

In FIG. 1, reference numeral 29 is an outlet forming portion, and reference numeral 30 is a margin for bonding the bottom wall 5 and the side wall 3 together.

The box body formed by adhering the margins 15, 25, 26, 31 from the blank shown in FIG. 1 has the appearance shown in FIG. 2, and the outer side below the outer upper flap 6 on both end faces in the length direction. The lower flap 8 has an inverted C-shaped easy break line 16, a slit 17 for forming a finger hole and a horizontal portion 18 thereof.

In the box according to the present invention, when the contents are used up and the contents are discarded, the part surrounded by the slit 17 and the horizontal part 18 is pushed inward, and the part is shown in FIG. So as to fall inward, and a finger hook hole 32 is formed.

Next, when the fingertip is inserted into the finger-holding hole 32 and the outer upper flap 6 is pushed upward and outward as shown in FIG. 3, the outer lower flap 8 is broken at the easily breakable line 16 and the outer lower flap 8 is broken. Of the inner flaps 10 and 12 remains attached to the outer and upper flaps 6, and the portion of the inner flaps 10 and 12 which is surrounded by the half-cut line 28 causes delamination, and the inner flaps 10 and 12 and the outer and upper flaps 6 and 12 are delaminated. 6 and 6 are peeled off.

When the remaining portion of the outer lower flap 8 is pushed downward and outward, the glue margin 25 that adheres the flap 8 and the inner flaps 10 and 12 is also surrounded by the half cut line 27, so that the layers are separated. Peeling occurs, and the remaining portion of the outer lower flap 8 and the inner flaps 10 and 12 are peeled off.

When the above operation is performed on the outer upper and lower flaps 7 and 9 on the opposite side and the box 1 is pressed, the box 1 is flattened as shown in FIG. The cut pieces are oriented inward and do not project outward.

[0025]

[Effect of device]

 According to the first aspect of the present invention, the easily breakable line has an inverted C-shape that extends from approximately both ends of the margin of the outer lower flap to approximately the center of the flap, and does not have a structure that horizontally traverses the outer lower flap. This has the effect of preventing accidents in which the outer bottom flap is bent or cut at the easily breakable line during the fully automatic assembly process.

Further, since the slit for forming the finger hook hole and the inverted C-shaped easy break line can be visually recognized remarkably on the outer lower flap surface, there is no need to explain it to the user, and both end surfaces in the length direction of the box body can be seen by the user. It also has the effect of making it possible to understand that it can be broken and separated.

Furthermore, since the upper end of the easy-break line reaches substantially the left and right ends of the glue margin for adhering the outer upper flap and the outer lower flap, it is possible to separate the glue margin when separating the outer upper flap and the outer lower flap. There is almost no need to peel off the adhesive layer in a part, and there is an effect that both flaps can be separated with a light force.

According to the second aspect of the present invention, the upper and lower outer flaps and the inner flap are separated from each other by delamination of the paper material at the paste margin portion, so that there is an effect that they can be separated with a remarkably light force.

According to the invention of claim 3, during the high speed fully automatic assembly process, the inner flap is completely prevented from being bent at the vertical half-cut line surrounding the margin, and the inner flap is accurately folded. It has the effect of making it tune.

[Brief description of drawings]

FIG. 1 is a developed plan view of an example blank in which claim 1, claim 2 and claim 3 are implemented together.

FIG. 2 is a perspective view showing only one end surface side of the box body.

FIG. 3 is a perspective view showing a separated state of upper and lower outer flaps.

FIG. 4 is a perspective view showing a flat folded state of the box body.

[Explanation of symbols]

 1 Box 2 Top wall 3,4 Side wall 5 Bottom wall 6,7 Outer upper flap 8,9 Outer lower flap 10, 11, 12, 13 Inner flap 15, 25, 26 Adhesive margin 15A, 15B Both ends 16 Easy break line 16A , 16B Lower end 17 Slit 18 Horizontal part 19,20 Folding curve part 21,22 Chamfering bending curve 23,24 Half sewing line 27,28 Half cut line

Claims (3)

[Scope of utility model registration request] 1. At both ends in the length direction of a cardboard rectangular box body, left and right inner flaps folded back from both left and right side walls of the box body, and outer lower flaps folded back from the bottom wall of the box body. The outer upper flap that is attached and folded back from the top wall of the box is attached to the outer surface of the upper side of the inner flap and the outer lower flap, and at the lower side of the outer upper flap on the outer side of the upper side of the outer lower flap. A glue allowance is formed in the part to be covered, and an inverted C-shaped easy break line is formed from approximately both ends of the glue allowance to the approximate center of the outer lower flap. A box made of cardboard that is continuous with both ends of a horizontal portion of a slit for forming an inverted U-shaped finger hook hole formed from the approximate center of the lower flap downward. 2. The cardboard box according to claim 1, wherein the adhesive margin portion formed on the inner flap is surrounded by a half cut line. 3. The cardboard box according to claim 1 or 2, wherein a fold-cutting curve and a half-sewing line are formed in the fold curve portion of the inner flap.