JP2021123495A - Tape cutter - Google Patents

Abstract

To provide a tape cutter in which a crack is hardly formed from a cut tape end of a tape such as an adhesive tape.SOLUTION: A tape cutter 30 is constituted by an approximately flat-plate shaped cutter base 31, a cut introduction part 32 provided near a side part of a front end of the cutter base 31, and a cut guide part 35 provided inside the cut introduction part 32. The cut introduction part 32 has a blade tip 33 for cutting near a side part of a tape 43, and the cut guide part 35 has an approximately linear end part. Since the cut introduction part 32 only has one blade tip 33, and a force is concentrated, cutting can be performed by a small force differently from a conventional technique in which being distributed on many crests. In the tape 43, after once cutting is formed, a crack is easily propagated. Since the crack advances along the linear cut guide part 35, the linear cut end is formed.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tape cutter that cuts a tape such as an adhesive tape.

Conventionally, a tape cutter that pulls out and cuts a tape such as an adhesive tape wound in a roll shape has been used.

For example, as shown in Patent Document 1, a technique for cutting a tape drawn from a tape roll with a cutting blade 5 has been disclosed.

JP-A-2018-2471

However, as shown in FIG. 5, in this technique, the cutting blade is formed into a corrugated shape in which straight lines are connected in a zigzag shape, so that the tape also has a similar corrugated cutting surface. For this reason, the cut surface of the tape has an acute-angled peak shape and an acute-angled valley shape. Therefore, when a force is applied to the cut surface of this tape, stress is concentrated on the valley-shaped portion and cracks may occur. It was common. Then, the tape was torn, and the remaining tape often stuck to the roll and had difficulty peeling off.

Further, when trying to peel off the tape attached to a cardboard box or the like, cracks are often formed from the end of the tape, which often takes time to unpack.

It is composed of a cutter substrate extending in the width direction of the tape to be cut, a cut introduction portion provided near the side portion of the front end of the cutter substrate, and a cut guide portion provided inside the cut introduction portion. The tape cutter is characterized in that the cut introduction portion has a cutting edge that cuts the vicinity of the side portion of the tape, and the cut guide portion has an end portion having a shape to be cut.

The cut guide portion of the above-mentioned tape cutter is a tape cutter having a linear end portion.
The cut introduction portion of the above tape cutter is a tape cutter characterized by having a chevron-shaped cutting edge.

It is possible to solve the above problems and provide a tape cutter that does not easily crack from the cut tape end.

The perspective view of the state where the tape roll is attached to the tape cutter of 1st Embodiment is shown. The perspective view of the tape cutter of 1st Embodiment is shown. An explanatory diagram of a state in which a tape is cut by the tape cutter of the first embodiment is shown. It is a perspective view which shows the piece of the cut tape. It is a perspective view of the prior art. The six views of the first embodiment are shown. The bottom view appears symmetrically with the plan view. The left side view appears the same as the right side view. The perspective view of the tape cutter of the 2nd Embodiment is shown. The six views of the second embodiment are shown. The left side view appears the same as the right side view. The six views of the third embodiment are shown. The left side view appears the same as the right side view. The six views of the fourth embodiment are shown. The bottom view appears symmetrically with the plan view. The left side view appears the same as the right side view.

The tape cutter of the first embodiment will be described with reference to FIGS. 1, 2, 3, 4, and 6. The tape cutter 30 of the first embodiment is provided inside the substantially flat plate-shaped cutter substrate 31, the cut introduction portion 32 provided near the side portion of the front end of the cutter substrate 31, and the cut introduction portion 32. It is composed of a cut guide portion 35.

The cut introduction portion 32 has a cutting edge 33 that cuts the vicinity of the side portion of the tape 43, and the cut guide portion 35 has a substantially linear end portion. The protector 36 and the holder 37 extend from the side of the cutter substrate 31, and the tape cutter 30 is attached to the tape roll 40 by the holder 37.

The cutter substrate 31 is preferably formed of a single metal plate such as iron or stainless steel, but several materials may be combined. The cut introduction portion 32 has an acute-angled mountain-shaped cutting edge 33. The blade edge 34 is rounded with a curvature.

In using the tape cutter 30 of this embodiment, the tape 43 is pulled up in the direction of C in FIG. Then, first, the cut introduction portion 32 makes a cut in the end portion of the tape 43. Since the cut introduction portion 32 has only one cutting edge 33, the force is concentrated, so that the cut can be cut with a small force unlike the conventional technique of dispersing in a large number of peaks.

However, the number of cutting edges 33 does not necessarily have to be one, and if the number of cutting edges 33 is smaller than that of the prior art, there is an effect of reducing the required cutting force. Once the tape 43 is cut, the cracks can easily propagate.

Since this crack progresses along the linear cut guide portion 35, a linear cut end is formed. In the prior art, a zigzag wavy cut end was formed and the tape piece 43 was easily cracked due to stress concentration. However, this tape cutter 30 has a straight cut end formed, so that it can be torn. A tape 43 having a strong tape front end 44 and a tape rear end 45 is formed.

As the material of the tape, a plastic sheet such as OPP is strong in tensile force but extremely weak in tearing, so that the effect of the present invention is remarkable, but it can also be used for kraft tape and the like.

7 and 8 show the second embodiment, in which the cut introduction portion 32 has a flat cutting edge. The cutting force must be large, but a straight tape end can be obtained over the entire width. As another embodiment, a plurality of chevron-shaped cutting edges 33 may be provided so that different tape widths can be accommodated.

The protector 36 of FIG. 1 makes it difficult for a finger to hit the cutting edge 33, improving safety.
In the tape cutter of the third embodiment of FIG. 9, the cutting edge 33 is slanted so that a force is more easily applied to the side closer to the side portion of the tape, and a tape end having no acute angle portion over the entire width can be obtained. ..
In the tape cutter of the fourth embodiment of FIG. 10, the cut guide portion 35 is curved so that the end of the tape can be easily pinched.

Although the present invention is applied to a tape cutter, it can also be used for other film cutters such as wrap films.

30 is a tape cutter 31 is a cutter substrate 32 is a cut Introducing part 33 is a cutting edge 34 is a cutting edge 35 is a cutting guide part 36 is a protector 37 is a holder 40 45 is the rear end of the tape

Claims (3)

It is composed of a cutter substrate extending in the width direction of the tape to be cut, a cut introduction portion provided near the side portion of the front end of the cutter substrate, and a cut guide portion provided inside the cut introduction portion. The tape cutter is characterized in that the cut introduction portion has a cutting edge that cuts the vicinity of the side portion of the tape, and the cut guide portion has an end portion having a shape to be cut. The tape cutter according to claim 1, wherein the cut guide portion of the tape cutter has a linear end portion. The tape cutter according to claim 1 or 2, wherein the cut introduction portion of the tape cutter has a chevron-shaped cutting edge.

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