JP2015155509A - Adhesive tape easy to open - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhesive tape as an adhesive tape for sealing a box, being hardly cut off even when an external force is added during box sealing work or transportation, and enabling rapidly and easily opening a box without using a tool.

SOLUTION: In an adhesive tape 3 having a film for sealing a box as the base material, crack occurrence parts 4 as a range where a plurality of slits and cracks 5 for causing cracks on the adhesive tape are formed, are continuously arranged at an interval of 50 mm or more along a longer direction (B-B') of the adhesive tape 3 so as to form a row, and the one row is provided with the transverse direction center of the adhesive tape 3 as the center. The adhesive tape easy to open is such that a length of the crack occurrence part 4 in an adhesive tape transverse direction (A-A') is half or less of a length of the adhesive tape transverse direction (A-A'), and a length of the crack occurrence part 4 in the adhesive tape longer direction (B-B') is 20 mm or less.

COPYRIGHT: (C)2015,JPO&INPIT

Description

  The present invention relates to an adhesive tape used for sealing a box, and relates to an adhesive tape that facilitates opening of the box.

  A box, such as a cardboard box, for storing luggage is an outer flap that is connected to the upper and lower edges of a pair of side plates (located above the inner flap that is connected to the upper and lower edges of a pair of end plates) And sealed with adhesive tape. In order to open the box thus sealed, generally, the adhesive tape is cut and opened with a cutter or the like, or the adhesive tape is peeled off and opened. In order to easily open a box sealed with an adhesive tape, three methods have been proposed.

The first method is a method in which the adhesive tape is easily peeled off from the box and opened, and in Patent Document 1, a cut is made in the box in order to easily peel off the adhesive tape.
The second method is a method of making the box easy to open by sealing the box with an adhesive tape having notches and perforations, and preliminarily slits and holes in the adhesive tape as in Patent Document 2. Some have a perforation in the center of the adhesive tape in advance as in Patent Document 3.
In the third method, after the box is sealed with an adhesive tape, a perforation is made along the seam as in Patent Document 4, and the perforation is opened at the time of opening.

JP 2004-175451 A Shokai 54-133165 Utility Kaihei 6-51256 JP-A-7-251812

The method of cutting and opening the adhesive tape using a cutter, etc. that is generally used, always requires a cutter, and there is a risk of damaging the contents and injury when using the cutter. there were. The method of peeling and opening the adhesive tape is not easy to remove the adhesive tape that is strongly adhered to the box, and it takes time and labor, and there is a risk of damaging the nail when peeling. There was also a problem that it could not be removed cleanly.
In Patent Document 1 of the first method, in order to solve this difficult-to-peel problem, a cut is made in a portion near the end plate of the box or the adhesive tape in the center of the lid, and the cut is made easier to hold the adhesive tape. It is a method that makes it easy to peel off. In this method, power is required to peel off the adhesive tape from the box, and the position of the cut on the box is fixed, so it is necessary to attach the adhesive tape accurately, and work needs attention. Since the end of the adhesive tape is cut in a jagged shape, when peeling off from the end of the adhesive tape, there is a problem that it may be cut obliquely at the beginning of peeling and cannot be peeled further.

In the second method, the adhesive tape facing the seam can be broken and opened. However, since the perforation is formed in all the adhesive tapes facing the seam, the adhesive tape is not transported during transportation when a force to suppress from above is applied. There was a problem of cutting.
Further, the method of Patent Document 2 has a problem in that the adhesive tape has cuts, holes, or perforations throughout the entire surface, so that the adhesive tape cannot be handled carefully during the sealing operation. Similarly, Patent Document 3 has a problem that if the adhesive tape is not handled carefully, it may be cut vertically along the perforation, and it is difficult to apply the adhesive tape with the perforation positioned at the joint.
In Patent Document 4 of the third method, since the perforation is put into the seam after sealing, the adhesive tape does not break during the sealing operation, or the perforation of the adhesive tape does not match the box seam. Since the adhesive tape made of film such as OPP is easy to tear if there is a cut, the adhesive tape with the perforation may be cut and opened if force is applied during the formation of the perforations or during transportation. there were.

  The present invention has been made paying attention to such problems of the prior art, and does not require special equipment, machinery, or high work accuracy for box sealing work, and is not intended during sealing work or transportation. The purpose is to provide an easy-to-open adhesive tape that can open the box quickly and easily without the need for a cutter or other blade when opening the box. To do.

  In order to achieve the above object, the easily openable adhesive tape according to claim 1 is a pressure-sensitive adhesive tape based on a film used for sealing a box, wherein a plurality of cuts and scars that cause cracks are formed in the pressure-sensitive adhesive tape. The cracked portion which is the range formed is continuously arranged at intervals of 50 mm or more along the longitudinal direction of the adhesive tape to form a row, and this row is centered in the short direction center of the adhesive tape. Furthermore, the length of the crack occurrence part in the adhesive tape short direction is ½ or less of the length of the adhesive tape short direction, and the crack occurrence in the adhesive tape longitudinal direction is provided. The length of the portion is 20 mm or less.

The notches and scars that cause cracks in an adhesive tape that is easy to open are converted into slits when a force is applied, and the notches are stretched and cracked by the application of force and distortion. If the cut is so small that the cut does not distort even when force is applied, a crack cannot be generated. However, when a plurality of small cuts are broken and connected as perforated by the applied force, cracks can be generated. Thus, the size of the cut is not very important. For these reasons, the slits and scars of the present invention include a plurality of slits, holes, and scars formed at intervals that are connected like perforations when force is applied to the adhesive tape, and the shape is only linear. It may be an irregular shape.
The cuts and scars that cause cracks are formed uniformly in the cracked part, but are not formed in any part other than the cracked part.
In addition, a crack generation part is the concept which shows the formation range of a notch and a scar, and does not actually exist on an adhesive tape.

The pressure-sensitive adhesive tape that can be easily opened of the present invention utilizes the property of the film base material of the pressure-sensitive adhesive tape that it is easy to crack if there is a cut or scratch.
When a pair of outer flaps are closed using a pressure-sensitive adhesive tape that is easy to open according to the present invention and the box is sealed, a crack occurrence portion of the pressure-sensitive adhesive tape is located at a part of the joint between the outer flaps. When opening the cracked part of the adhesive tape facing the seam from above with a toe when opening, a strong force is applied locally from above, and the part where the force is applied and the surrounding notches and scars develop into cracks. . When the fingernail is pushed lightly and moved along the joint, the cracks will extend and the adhesive tape at the joint can be cut. Next, when either one of the outer flaps is lifted, the crack extends to the adhesive tape between the lifted outer flap and the end plate. When the remaining outer flap is also lifted up, the adhesive tape between the outer flap and the end face plate can be broken and opened. As described above, in the present invention, the adhesive tape facing the joint can be opened if there is one notch or scar that triggers the opening.

  For this reason, since the length of the crack generation part of an adhesive tape longitudinal direction may be short, it was referred to as 20 mm or less. In addition, it is desirable that the gap between the cracks in the longitudinal direction of the adhesive tape is as wide as possible because it can reduce the risk of unintentional cutting and opening. Was set to 50 mm or more.

  Next, the pressure-sensitive adhesive tape that can be easily opened according to claim 2 is a range in which a plurality of cuts and scars causing cracks in the pressure-sensitive adhesive tape are formed in a pressure-sensitive adhesive tape based on a film used for sealing a box. The crack occurrence portions are continuously arranged at intervals of 50 mm or more along the longitudinal direction of the adhesive tape to form a row, and this row is formed from the center in the short direction of the adhesive tape to both side edges. Within a half of each length, a plurality of rows are provided at intervals in the short direction of the adhesive tape, and the crack occurrence in the short direction of the pressure-sensitive adhesive tape is formed with respect to the crack occurrence portion constituting this row. The length of the part is shorter than ½ of the length of the adhesive tape in the short direction, the length of the crack occurrence part in the longitudinal direction of the adhesive tape is 20 mm or less, and viewed from the longitudinal direction of the adhesive tape. Or contact cracking portion of the column in contact with each other, partially overlapping, and cracking portion of the adjacent rows when viewed from the lateral direction of the adhesive tape is characterized in that it is spaced.

  According to the second aspect, since the length in the short direction of the adhesive tape of each crack occurrence part is shorter than that in the first aspect, the possibility that the crack occurrence part is cut in the short direction during a sealing operation or the like is low. In addition, since the area of each crack occurrence portion is smaller than that of claim 1, even if a planar force is applied, the portion other than the crack occurrence portion disperses the force, so that the possibility of cracking and cutting is further reduced. .

Next, the easy-opening adhesive tape according to claim 3 is characterized in that in the easily-opening adhesive tape according to claim 1 or 2, the adhesive tape has an indication of each crack occurrence portion. And
The display indicating the crack occurrence portion is a display that allows the user to recognize or estimate the crack occurrence portion, and refers to a figure, a symbol, a word, coloring of the crack occurrence portion, or the like.
The easy-to-open adhesive tape of this application is characterized by the small area of the crack occurrence part, but it is difficult for the person who opens to know the location of the crack occurrence part. Easy to do. In addition, when pasting the terminal that is the cut end of the adhesive tape to the wound body at the end of the work, etc., if there is a cracked part in the terminal, it will break from the cracked part when peeling the tape from the wound body again. It cannot be removed. In the invention of claim 3, since it can be cut at a place other than the crack occurrence portion with reference to the indication of the crack occurrence portion, this does not occur.

The effect of the pressure-sensitive adhesive tape (hereinafter referred to as pressure-sensitive adhesive tape) that can be easily opened according to claim 1 will be described in three scenes: sealing operation, transportation, and opening.
First, the sealing operation will be described. When the adhesive tape is peeled off from the wound body, a force is easily applied to the side edge portion of the adhesive tape, so that it is easy to cut if there is a cut or scratch near the edge. However, the adhesive tape of the present invention is not provided with a portion where cracks occur from the half of the length from the center of the adhesive tape to the side edge to the side edge, so from the edge of the adhesive tape There is no cutting.

In addition, the cracked part of the adhesive tape is as short as 2 cm or less in the longitudinal direction of the adhesive tape, and the distance between the cracked parts in the longitudinal direction of the adhesive tape is 5 cm or more, so the adhesive tape may break in the longitudinal direction. Is low.
Furthermore, the cuts and scars formed in the cracked part are so small that cracks do not occur unless a strong local force is applied to the toe, etc., and only the cracked part is present, so the adhesive tape is applied by the force applied during the sealing operation. The possibility of cutting is small.
In addition, when performing sealing work using an automatic boxing machine with high work accuracy, it is possible to match the seam between the center of the adhesive tape in the short direction of the adhesive tape and the outer flap. Since the length can be shortened, the possibility of unintentional cutting is further reduced.
Thus, the pressure-sensitive adhesive tape of the present invention does not require a special machine or instrument for sealing the box, and the ease of handling of the pressure-sensitive adhesive tape is almost the same as that of a conventional pressure-sensitive adhesive tape. Easy to use because work can be done.

Next, the transportation will be described. The joint of the outer flap of the box sealed with the pressure-sensitive adhesive tape of the present invention is a thin line, and the cuts and scars that cause cracks are only part of the joint. Therefore, since there is a low possibility of applying a force that causes cracks or scars in a small part during transportation, the possibility of opening during transportation is low.
When the box is opened, if the cracked portion facing the joint of the outer flap of the box is pressed with a fingernail, the notch is enlarged or a crack is generated from the scar. If the nail is moved along the joint, the crack also extends, and the adhesive tape at the joint can be cut. Then, it can be opened by lifting the outer flap, so it can be opened quickly and easily without using tools.

According to a second aspect of the present invention, the length of the cracked portion in the short direction is shorter than that of the first aspect. By reducing the area of each crack occurrence portion, the possibility of cutting from the crack occurrence portion in the short direction during the sealing operation is reduced. Further, when the adhesive tape wound on the wound body is peeled off, since the area of each crack occurrence portion is smaller than that of claim 1, only the crack occurrence portion remains in the winding body or is cut from the crack occurrence portion. The possibility is even smaller. Other effects are the same as those of the first aspect.
According to the indication of the crack occurrence part of claim 3, even if the crack and the scar are made smaller and the crack is not generated unless a strong force is applied, the place where the crack is generated can be confident, so the opening work is more Quickly and easily and can reduce the possibility of opening during transportation. Moreover, since it can cut | disconnect except a crack generation | occurrence | production part when cut | disconnecting an adhesive tape after use of an adhesive tape and sticking a terminal back to a wound body, when cutting a terminal from a wound body again, it will not become an unintentional cutting method.

It is a perspective view of the adhesive tape with easy opening of Example 1. FIG. It is a top view of the adhesive tape with easy opening of Example 1. FIG. It is a perspective view of the box sealed using the adhesive tape with easy opening of Example 1. FIG. It is a perspective view of the adhesive tape with easy opening of Example 2. FIG. It is a top view of the adhesive tape with easy opening of Example 2. FIG.

The numerical values in the following examples are numerical values as examples unless otherwise specified, and the invention of the present application is not limited by these numerical values. Moreover, the film which is a base material of the adhesive tape of a following example is a film which is easy to tear if there exists a damage | wound and cut | notch of synthetic resins, such as a polypropylene and an acetate, and cellophane.
The cuts and scars are formed during the production of the adhesive tape using various methods such as a needle-like object having a sharp point, a disk-shaped blade, and laser light. For this reason, the shape of notches and scars includes irregular shapes, notches parallel to the longitudinal direction of the adhesive tape, round holes, and polygonal holes such as stars.
Further, the size of the cuts and scars is 0.1 mm to 3 mm so as to cause a crack when a local force is applied.
The notches and scars shown in the drawings of the examples only mean that there are notches and scars, and do not indicate the shape or size. Similarly, the cracked portion is a concept indicating the range of formation of cuts and scars, and does not actually exist on the adhesive tape.

Example 1
An easy-to-open adhesive tape (hereinafter referred to as an adhesive tape) according to Example 1 of the present invention will be described with reference to FIGS. 1, 2, and 3.
1 is a perspective view of a pressure-sensitive adhesive tape that can be easily opened in Example 1. FIG. FIG. 2 is a plan view of a part of the adhesive tape of Example 1 as viewed from above.
The length in the short direction (AA ′) of the adhesive tape 3 of Example 1 is 50 mm. The adhesive tape 3 is provided with a crack occurrence portion 4.
The crack occurrence portion 4 has a length in the short direction of the adhesive tape of 25 mm and a length in the longitudinal direction of the adhesive tape (BB ′) of 10 mm, centering on the central portion in the short direction of the adhesive tape (AA ′). It is almost rectangular. The crack generation part 4 is uniformly formed with cuts 5 of about 0.3 mm to 1 mm.
The crack occurrence portions 4 are provided every 100 mm in the longitudinal direction of the adhesive tape, and triangular marks 6 indicating the positions of the crack occurrence portions 4 are marked on both edge sides of each crack occurrence portion 4.

FIG. 3 is a perspective view of a state in which the box is sealed using the adhesive tape of Example 1. The box to be sealed with the adhesive tape of the present invention is a box in which inner flaps and outer flaps 9 and 10 are overlapped and sealed, and from one end face plate 8 to the other end face plate 8, a pair of outer flaps 9 and The outer flap 10 is a box sealed with adhesive tape 3 and sealed as shown in FIG. The length of the seam 11 of the outer flap of the box is 250 mm, and three crack occurrence portions 4 are located on the adhesive tape 3 facing the seam 11.
In addition, the crack generation | occurrence | production part 4 shows the range where the notch 5 which produces a crack exists, and since the notch was as small as 0.3 mm-1 mm, it abbreviate | omitted in FIG.

Next, the operation and effect of the first embodiment will be described.
Since the pressure-sensitive adhesive tape 3 of Example 1 has a small area of the crack occurrence portion 4, it is unlikely to be cut off even when handled in the same manner as a normal pressure-sensitive adhesive tape or remain on the roll 1 when peeled off from the roll 1. For this reason, box sealing can be used in the same manner as conventional adhesive tapes without the need for special methods, devices and tools. Further, when the box is sealed with the adhesive tape 3, even if the seam 11 is slanted with respect to the joint 11, or the joint 11 of the outer flap is displaced by a little less than 10 mm from the center in the short direction of the adhesive tape 3, the cracked portion 4 Is long in the short direction (A-A ′), and the cracked portion 4 is always located in the adhesive tape 3 facing the joint 11, so that it is not necessary to pay much attention to the accuracy of the application.
Even if an unintended force is applied to the box during transportation, the cuts and scars located at the joints of the outer flap are few and small, so it is unlikely that a strong force will be applied to the cracks. The possibility of opening is low. The adhesive tape part that adheres to the outer flap is also cut and scratched, but it is strongly adhered to the outer flap except for the part that is very close to the joint. Not involved in.

  The opening of the box is performed by referring to the mark 6 marked on the adhesive tape 3 and removing one of the cracked portions 4 at the three locations of the adhesive tape 3 facing the joint 11 from above with a toe or the like. When pushed, the notch 5 in the crack generating portion 4 is deformed and a crack is generated. Or the adhesive tape between notches breaks and a crack is produced. Next, when the fingernail is lightly pressed and moved along the seam 11, the crack extends and the adhesive tape 3 at the seam portion is cut. After that, when one outer flap 10 is pushed into the inside of the box, there is a gap between the other outer flap 9 and a finger is put in. When the outer flap 9 is lifted upward, the crack is The adhesive tape 3 between the end plates 2 is stretched and cut. The remaining outer flap 10 is lifted and the adhesive tape 3 between the outer flap 10 and the end face plate 2 is broken and opened. In this way, it can be opened quickly and easily without using tools.

(Example 2)
An easy-to-open adhesive tape (hereinafter referred to as an adhesive tape) according to Example 2 of the present invention will be described with reference to FIGS.
4 is a perspective view of an adhesive tape in Example 2. FIG. FIG. 5 is a plan view of a part of the adhesive tape of Example 2 as viewed from above.
The length of the adhesive tape 3a of Example 2 in the short side direction (AA ′) is 50 mm.
The adhesive tape 3a is provided with crack occurrence portions 4a at intervals of 100 mm along the longitudinal direction (B-B ') to form a row. The size of each crack occurrence part 4a is 10 mm in the adhesive tape short direction (AA ′) and 10 mm in the adhesive tape longitudinal direction (BB ′). The notches 5 that can cause cracks are uniformly formed in the crack generation portion. Further, a triangular mark 6a indicating the crack occurrence portion 4a is marked on both edge sides of each crack occurrence portion 4a.

Three rows of crack occurrence portions 4a are formed within a range of 1/2 from the center of the adhesive tape short direction (AA ′) to each side edge, and one row is the adhesive tape short direction (A -A ′) is provided with the center as the center, and the other two rows are arranged by being shifted to each side edge side by 7.5 mm so as to be separated from the center in the short direction (A-A ′).
When the crack occurrence part 4a is viewed from the longitudinal direction (BB ') of the adhesive tape, the adjacent crack generation parts 4a overlap each other by 2.5 mm and adjacent when viewed from the adhesive tape short direction (AA'). The crack generating portions 4a to be formed are arranged at intervals of 4 mm so as not to overlap.
Next, the operation and effect of the second embodiment will be described. In addition to the operation and effect of Example 1, the operation and effect of Example 2 are such that the length of the crack occurrence portion 4a in the adhesive tape short direction (AA ′) can be shorter than that of Example 1, and therefore the sealing operation There is a low possibility that the crack occurrence part 4a is cut in the short direction (AA ′) in the middle or the like. Moreover, since the area of each crack generation part 4a is smaller than Example 1, even when peeling from the wound body 1a, possibility that the crack generation part 4a will remain in the wound body 1a becomes still less.

DESCRIPTION OF SYMBOLS 1, 1a ... Easy-opening adhesive tape roll 2, 2a ... Easy-opening adhesive tape winding core 3, 3a ... Easy-opening adhesive tape 4, 4a ... Crack generation part 5, 5a ... Notch 6, 6a ... Mark indicating crack occurrence part 7 ... Side plate 8 of box ... End plate 9 of box 9, 10 ... External flap 11 of box ... Joint of outer flap of box AA '... Short direction B- of adhesive tape B- B '... Longitudinal direction of adhesive tape

Claims (3)

  In a pressure-sensitive adhesive tape based on a film used for sealing a box, a crack generation portion, which is a range in which a plurality of cuts and scars that cause cracks in the pressure-sensitive adhesive tape are formed, is 50 mm along the longitudinal direction of the pressure-sensitive adhesive tape. The above-mentioned interval is continuously arranged to form a row, and this row is provided in one row centering on the center in the short direction of the adhesive tape, and further, the crack occurrence portion in the short direction of the adhesive tape is provided. The adhesive tape is easy to open, characterized in that the length is ½ or less of the length in the short direction of the adhesive tape, and the length of the cracked portion in the longitudinal direction of the adhesive tape is 20 mm or less .   In a pressure-sensitive adhesive tape based on a film used for sealing a box, a crack generation portion, which is a range in which a plurality of cuts and scars that cause cracks in the pressure-sensitive adhesive tape are formed, is 50 mm along the longitudinal direction of the pressure-sensitive adhesive tape. The above-mentioned adhesive tape is arranged in a continuous manner at a distance to form a row, and this row is within a range of each half of the length from the center in the short side direction to both side edges of the adhesive tape. A plurality of rows are provided at intervals in the short direction of the tape, and the length of the crack occurrence portion in the short direction of the pressure-sensitive adhesive tape is the length in the short direction of the pressure-sensitive adhesive tape. The length of the crack occurrence portion in the longitudinal direction of the adhesive tape is 20 mm or less, and the crack occurrence portions of adjacent rows as viewed from the longitudinal direction of the adhesive tape are in contact with each other, or a part thereof A pressure-sensitive adhesive tape that is easy to open, wherein the cracked portions of the adjacent rows as viewed from the short side direction of the pressure-sensitive adhesive tape are overlapped and arranged at intervals.   The adhesive tape according to claim 1, wherein the adhesive tape has a display indicating each crack occurrence portion.

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