JP2016137985A - Tape dispenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent injury when a finger tip touches a cutting blade in cutting an adhesive tape, provide a good feeling of response in tearing, and enable the adhesive tape to be cut with a light force while forming a neat torn surface.SOLUTION: A tape dispenser comprises a tape cutter 13 for cutting an adhesive tape. The tape cutter comprises a bottom wall face 14a, front and rear wall faces 14b, 14c, left and right side wall faces 14d, 14e, and a top wall face 14f facing the bottom wall face. A tape cutting blade 13 is formed on the top wall face 14f. The tape cutting blade 13 comprises: a front face 15provided with a projection 15which is sharpened at an angle θ1 at a top edge center of the front wall face; a holding face 15inclined downward at an angle θ4 from the projection toward the rear wall face 14c; and left and right inclined side faces 15inclined downward at an angle θ3 from the projection toward the left and right side wall faces 14d, 14e. The angle θ1 of the front face is formed in an obtuse angle.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a tape dispenser that cuts an adhesive tape, and more particularly, to a tape dispenser that can safely cut an adhesive tape without fear of finger injury.

  A conventional tape dispenser includes a tape cutter. Since this cutter generally uses saw blades or knife-shaped cutting blades, there is a risk that the user may injure the fingers with these cutting blades.

  In order to avoid this danger, various tape dispensers have been proposed. For example, the tape dispenser described in the following Patent Document 1 is such that a cutting blade is stored in a normal state and is exposed when the tape is cut. Specifically, the tape dispenser includes a main body having a cutting blade, a lever provided swingably with respect to the main body, and a yoke and a leaf spring inserted through the main body. The lever is locked in the direction of the cutting edge exposure by the action of the bolt, so that the cutting edge is not exposed.

  Moreover, the tape dispenser described in the following Patent Document 2 is provided with a cover body that covers the cutting blade, and this cover body moves downward when the tape is cut. The tape dispenser described in the following Patent Document 3 divides the cover plate that protects the cutting blade between when the tape cutter is used and when it is not used, and rotates the cover plate with the fingertip to expose or hide the tape cutting blade. It is what I did. The tape dispenser described in the following Patent Document 4 is provided with a safety protection member. Furthermore, the tape dispenser described in the following Patent Document 5 is provided with a finger protecting portion that surrounds the blade so that the finger does not touch the blade edge, and the tape dispenser described in the following Patent Document 6 includes a cutter. It consists of two angle blades and two valley blades.

JP 09-208114 A JP 2002-307373 A JP 2001-146356 A Utility Model Registration No. 3009748 Japanese Patent No. 3878655 Japanese Patent No. 4895769

  In the tape dispenser described in each of the above patent documents, the cutting blade of the tape cutter uses the same saw-shaped or knife-shaped cutting blade as that of the conventional one, and the blade edge is covered with a member such as a protective cover. The finger is not touched. However, in this configuration, if a member such as a protective cover is removed, the cutting edge is exposed and dangerous. In addition, any member such as a protective cover requires a movable mechanism that covers or exposes the cutting blade, and the structure is complicated, resulting in high production costs. In addition, such cutting blades do not look good, and sharpening the cutting edge will cause blade spillage and shorten the life, while other problems such as the possibility of dust accumulating or being easily damaged between the blades. doing.

  The present invention has been made to solve the above-described problems of the prior art. That is, an object of the present invention is to provide a tape dispenser that can safely cut an adhesive tape without fear of finger injury.

  In addition, another object of the present invention is to provide a tape dispenser that is free from breakage and dust accumulation, has a good response at the time of breaking, and can cut an adhesive tape with a light force with a clean fracture surface. is there.

  In addition, another object of the present invention is to provide an adhesive tape in which a plurality of slits are arranged at predetermined intervals without using a sharp cutting blade. It is to provide a tape dispenser that can be used.

  Furthermore, another object of the present invention is to provide a tape dispenser that has a simple structure, can be produced at low cost, and can be used easily by anyone.

  In order to achieve the above object, a tape dispenser according to the first aspect of the present invention is provided with a tape holding unit that rotatably holds an adhesive tape winding body, and an adhesive tape drawn from the adhesive tape winding body in a desired manner. A tape dispenser comprising: a tape cutter that cuts to a length; the tape cutter includes a bottom wall surface having a predetermined size; front and rear wall surfaces that are erected at a predetermined height from the outer periphery of the bottom wall surface and are opposed to each other before and after; The left and right side wall surfaces located between the front and rear wall surfaces, and the upper wall surface above the front and rear wall surfaces and the left and right side wall surfaces and facing the bottom wall surface, and cutting the adhesive tape on the upper wall surface A tape cutting blade is formed, and the tape cutting blade has a front surface provided with a protrusion sharpened at an angle θ1 at the center of the top side of the front wall surface, and a downward slope of angle θ4 from the protrusion toward the rear wall surface. so An inclined holding surface and left and right inclined side surfaces inclined at a downward slope of angle θ3 from the protrusion toward the left and right side wall surfaces, wherein the front angle θ1 is formed as an obtuse angle. And

  The tape dispenser according to the second aspect is characterized in that, in the tape dispenser according to the first aspect, the angle θ1 is in a range of 120 ° to 160 °.

  A tape dispenser according to a third aspect is the tape dispenser according to the first or second aspect, wherein the front wall surface is formed of a front inclined surface inclined at an angle θ2 toward the front of the front wall surface or toward the rear wall surface. It is characterized by being.

  The tape dispenser according to a fourth aspect is the tape dispenser according to the third aspect, characterized in that the angle θ2 is in the range of 65 ° to 105 °.

  The tape dispenser of the fifth aspect is the tape dispenser of any one of the first to fourth aspects, wherein the angle θ3 is in the range of 20 ° to 110 °, and the angle θ4 is in the range of 0 ° to 65 °. And

  According to the tape dispenser of the first embodiment, since the front angle θ1 of the tape cutting blade is formed as an obtuse angle, there is no risk of injury even if the fingertip touches the cutting blade when cutting the adhesive tape. It has good response and can be cut with a light force with a clean fracture surface. In addition, since it has a simple structure, it can be produced at a low cost and can be easily used by anyone.

  According to the tape dispenser of the second embodiment, since the front angle θ1 of the front is formed to be 120 ° to 160 °, the height difference on the front side is reduced, and a uniform vertical stress is applied to the central portion of the adhesive tape. It has good response when hooked and broken, and it can be cut with a light force with a clean fracture surface.

  According to the tape dispenser of the third and fourth forms, since the front inclined surface is inclined at the angle θ2, the height difference on the front side is reduced, and a uniform vertical stress is applied to the central portion of the adhesive tape [t1]. It has good response when hooked and broken, and it can be cut with a light force with a clean fracture surface.

  According to the tape dispenser of the fifth embodiment, since the angle θ3 is in the range of 20 ° to 110 ° and the angle θ4 is in the range of 0 ° to 65 °, the height difference on the front side is reduced, and the central portion of the adhesive tape is reduced. Uniform vertical stress is applied to [t2], and it has good response at the time of fracture, and it can be cut with a light force with a beautiful fracture surface.

It is a perspective view of a tape dispenser concerning an embodiment of the present invention. 2A is a perspective view of an adhesive tape winding body set in the tape dispenser of FIG. 1, and FIG. 2B is a plan view of the adhesive tape. 3A is an enlarged view of the IIIA portion of FIG. 2B, and FIG. 3B is a cross-sectional view of IIIB-IIIB of FIG. 3A. 4A is an enlarged view of the IVA portion of FIG. 1, and FIG. 4B is a perspective view of the tape cutter. 5A is a perspective view of the tape cutter showing the front angle of FIG. 4B, and FIG. 5B is an explanatory view showing the verification result of the front angle. 6A is a side view of the tape cutter showing the front inclination angle of FIG. 4B, and FIG. 6B is an explanatory view showing the verification result of the front inclination angle. 7A to 7D are side views of the tape cutter showing the front tilt angle of FIG. 6A. 8A is a side view of the tape cutter showing the side angle of FIG. 4B, and FIG. 8B is an explanatory view showing the verification result of the side angle. 9A is a side view of the tape cutter showing the holding surface angle of FIG. 4B, FIG. 9B is a side view showing the size of the tape angle and the holding surface angle, and FIG. 9C is an explanatory view showing the verification result of the holding angle. . FIG. 10A is a movement locus chart showing the movement locus of the right hand when cutting the adhesive tape, and FIG. 10B is a coordinate data table plotting the movement locus data of FIG. 10A with XY coordinates. It is the speed chart figure which calculated and showed speed from the coordinate data of Drawing 10B. It is the acceleration chart figure which calculated and showed the acceleration from the coordinate data of FIG. 10B. FIG. 13 is a chart related diagram showing the relationship between the speed chart and acceleration chart of FIGS. 11 and 12 and a tape cutting step. It is an acceleration chart figure explaining the evaluation parameter | index of a tape dispenser.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies a tape dispenser for embodying the technical idea of the present invention, and is not intended to specify the present invention. It can equally be applied to the other embodiments included.

  With reference to FIG. 1, the tape dispenser which concerns on embodiment of this invention is demonstrated. FIG. 1 is a perspective view of a tape dispenser according to Embodiment 1 of the present invention.

  A tape dispenser (hereinafter referred to as a dispenser) 10 according to an embodiment of the present invention includes a dispenser body 11, a tape holding part 12 c on which an adhesive tape roll 16 is set, and an adhesive drawn from the adhesive tape roll 16. And a tape cutter (hereinafter referred to as a cutter) 13 for cutting the tape 17 to a predetermined length.

The dispenser main body 11 is formed of a substantially box-shaped housing whose upper wall surface is open. The dispenser main body 11 includes a rectangular bottom wall surface 11b serving as a mounting surface to be mounted on a table, a desk, etc., and one side wall surface 11c and the other side wall surface erected from the long side of the bottom wall surface. 11d, a front wall surface 11e erected from a short side of the bottom wall surface 11b and mounted with a tape cutter (hereinafter referred to as a cutter) 13, a rear wall surface 11f facing the front wall surface, and a bottom wall surface 11b facing and sticking The tape winding body 16 has an upper surface 11a having an opening, the front wall surface 11e has a recess 12a in which a cutter is mounted, and the upper surface 11a has an opening 12b in which the adhesive tape winding body 16 is set. Has been. Recessed hole 12a is cutter body 14 0 _(see FIG. 4B) is formed in a size hole that can be fitted. By using this shape, a cutter 13 described later can be mounted interchangeably. The dispenser body 11 is formed of a resin material, a metal material, wood, or the like.

  Further, a tape holding portion 12c for holding the adhesive tape wound body 16 is formed on one and the other side wall surfaces 11c and 11d of the dispenser body 11. The tape holding portion 12c is formed by the bottom wall surface 11b, the side wall surfaces 11c and 11d, and the rear wall surface 11f of the dispenser body 11. That is, an opening 12b is formed inside the one and other side wall surfaces 11c and 11d, and the shaft portion 16b provided on the rotatable core member 16a to which the adhesive tape winding body 16 is attached and the one and the other side wall surfaces. The shaft portion 16b formed inside 11c, 11d is held in combination with the groove 11g to be inserted.

  Further, deep recesses 11h are formed on the side where the cutter 13 is provided on one and the other side wall surfaces 11c and 11d, respectively. The recessed portion 11h is a portion into which the user inserts a finger or the like when the adhesive tape 17 is pulled out.

  The adhesive tape will be described with reference to FIGS. 2A is a perspective view of an adhesive tape roll set in the tape dispenser of FIG. 1, and FIG. 2B is a plan view of the adhesive tape wound around the adhesive tape roll of FIG. 2A.

The adhesive tape 17 is made of, for example, a long cellophane having a predetermined width and thickness, and a plurality of slits 191 are arranged in a row at a predetermined interval on _one surface (hereinafter also referred to as a first surface) 18b. A tape 18 provided with a slit line 19 arranged in a line, an adhesive layer 20 formed by applying an adhesive to the surface of the tape provided with the slit line, and the other surface (hereinafter referred to as the second surface). And a release layer (not shown) in which a release agent is applied to 18a to a predetermined thickness.

  The tape 18 is not limited to cellophane, but other materials such as paper, resin film, biodegradable organic or inorganic film, biaxially stretched polypropylene, biaxially stretched polyethylene terephthalate, rubber, metallic film, A well-known material such as a wood film can be used. The tape material may be either a transparent material or an opaque material. In the present embodiment, the tape material will be described as a transparent material tape. As the pressure-sensitive adhesive, known materials such as rubber-based pressure-sensitive adhesives such as styrene butadiene rubber (SBR), natural rubber, and butyl rubber, and acrylic synthetic pressure-sensitive adhesives can be used. Further, a known release agent such as a silicon-based release agent can be used.

Slit lines 19, the first side 18b of the tape 18, the entered from the longitudinal opposite edges to a substantially central portion of the inner region, a predetermined spacing a plurality of slits 19 ₁ in the longitudinal direction of the tape 18 It consists of line-shaped items that are arranged in a row. ₁ series of slits 19 in the first surface 18b as shown in FIG. 3, a longitudinal direction orthogonal to the predetermined length of the tape 18, and in the longitudinal direction of the tape 18, than the length of the slit 19 ₁ It is formed by a concave groove having a predetermined depth and having an opening of a predetermined size in an area surrounded by short sides. Note that the first surface 18b is a rear surface of the tape in FIG. 2, from the second surface (surface) 18a [t3] is seen through slit 19 ₁ of the rear surface.

  The adhesive tape 17 wound in a roll shape becomes the adhesive tape wound body 16 as shown in FIG. 2A. The adhesive tape wound body 16 is provided with a core material 16a having a predetermined diameter at the center, and is set on the tape holding portion 12c of the dispenser 10 by the core material 16a.

  The cutter will be described with reference to FIG. 4A is an enlarged view of the IVA portion of FIG. 1, and FIG. 4B is a perspective view of the cutter of FIG. 4A.

As shown in FIG. 4B, the cutter 13 includes a substantially rectangular bottom wall surface 14a having a predetermined size, front and rear wall surfaces 14b and 14c that are erected at a predetermined height from the outer periphery of the bottom wall surface, and are opposed to each other. left and right side wall surface 14d located between the front and rear walls, and 14e, the upper wall surface 14f opposed to the bottom wall surface 14a in the above these front and rear wall and right and left side wall surfaces, the cutter body 14 ₀ a substantially rectangular parallelepiped shape composed of And a tape cutting blade (hereinafter referred to as a blade) 15 for cutting the adhesive tape 17 is formed on the upper wall surface 14f. The cutter body 14 ₀ is made of a rigid body such as metal material or a resin material of the rigid body.

The blade 15, as shown in FIG. 4B, before a predetermined angle .theta.1 to the apex of the upper central portion of the wall surface 14b front 15 provided with a protrusion 15 _T was sharpened into a mountain-type (hereinafter, referred to as the front angle .theta.1.) _1, a predetermined downward gradient toward the rear wall 14c of the protrusion 15 _T (angle .theta.4, hereinafter referred to as the holding surface angle .theta.4.) and the holding surface 15 ₂ is inclined to hold the adhesive tape from the projection 15 _T Left and right inclined side surfaces 15 ₃ and 15 ₃ are inclined toward the left and right side wall surfaces 14d and 14e with a predetermined downward gradient (angle θ3, hereinafter referred to as an inclined surface angle θ3). Incidentally, the front 15 ₁ is formed in a part or all of the front wall 14b.

  These front surfaces, holding surfaces, and left and right inclined side surfaces are determined in shape so that the adhesive tape can be cut under desired conditions.

The shape of the blade 15 (hereinafter, also referred to as blade type.), The shape of the front 15 ₁ of the front wall 14b has become important, this front shape, cutting of the quality of the adhesive tape 17 is affected. The front shape, such as, for example, the relevant retaining surface 15 _2, outward from the center of the slit 19 ₁ of the adhesive tape 17, when multiplied by the force to fit the cleft of the slit, the adhesive tape 17 cut by a small force An effective front shape for the slit is determined so that it is possible. In other words, if this blade shape is made, for example, from the apex of the upper wall surface of the cutter body to a shape in which sides and surfaces are formed all around the wall surface, cutting cannot be performed well, and the apex is shifted from the center. If the shape is biased to one side, it is necessary to correct the shape according to the movement of the right hand.

  From the above, it was found that it is effective to reduce the height difference on the side that descends from the apex (the side of the C-shape) and to make it a gentle mountain shape for the basic blade shape. In other words, it was confirmed that when the front angle was increased and the height difference at the sides was reduced, the film was cut in a straight line due to uniform vertical stress applied to the slit direction. On the premise of these confirmation items, an evaluation index is determined as to whether or not the shape of the front surface, the holding surface, and the left and right inclined side surfaces can be cut under desired conditions.

  This evaluation index is determined by analysis of hand movement when cutting the adhesive tape, that is, motion analysis (so-called motion capture analysis: measurement of coordinate position).

  Hereinafter, this motion capture analysis will be described with reference to FIGS. 10 is a movement locus chart showing the movement locus of the right hand when cutting the adhesive tape, FIG. 10B is a coordinate data table in which the movement locus data of FIG. 10A is plotted in XY coordinates, and FIG. 11 is the coordinate data of FIG. 10B. FIG. 12 is an acceleration chart diagram in which acceleration is calculated from coordinate data, FIG. 13 is a chart related diagram showing the relationship between the speed chart and the acceleration chart and the tape cutting step, and FIG. It is an evaluation derivation | leading-out chart figure which derives | leads-out the evaluation parameter | index of ease of cutting.

  First, referring to FIG. 10A, the symbol S in FIG. 10A indicates the wrist portion of the right hand and the symbol b1 indicates the tip of the right hand index finger (the end of the index finger). A long broken line with the same symbol b1 indicates a movement locus moved from the start point st1 to the end point te1 (in units of 1/120 seconds) plotted in XY coordinates. . Symbol b1-S indicates the movement of only the fingertip. These movement trajectories can be summarized by the coordinate data shown in FIG. Note that the position of the right hand in FIG. 10A illustrates a state in which the tip of the adhesive tape is gripped.

When the velocity V is calculated from the coordinate data by the following equation (1), the velocity chart of FIG. 11 is obtained.

Similarly, when the acceleration is calculated by the following equation (2), the acceleration chart of FIG. 12 is obtained.

  When these speed chart (FIG. 11) and acceleration chart (FIG. 12) are associated with a step leading to cutting of the adhesive tape 17 (hereinafter also referred to as a cutting step), a related chart (FIG. 13) is obtained. As shown in FIG. 13, the cutting step includes a “moving” step (hereinafter referred to as a first moving step) in which the right hand is moved and the adhesive tape 17 is gripped by a fingertip (thumb and index finger), and the gripped tape is pulled out. A step of “peeling” the adhesive tape 17 from the adhesive tape roll 16, a “moving” step (hereinafter referred to as a second moving step) for pulling out the adhesive tape 17 to a predetermined length, and then the adhesive tape 17 There are a “cutting” step for cutting and a “moving” step (hereinafter referred to as a third moving step) for moving the cut adhesive tape piece. The length of the adhesive tape piece to be cut is determined by the “peeling” step and the second moving step.

  When these cutting steps are related to the speed chart and the acceleration chart, the related diagram shown in FIG. 13 is obtained. From these related diagrams, the “evaluation index for ease of cutting” of the adhesive tape 17 is derived from the acceleration immediately after the fracture. In this embodiment, this evaluation index is “response at break” and “cleanness of fracture surface”. Using the evaluation index of ease of cutting, the front angle, front tilt angle, side angle and holding surface angle were verified.

  Returning to FIG. 5 to FIG. 9, the verification results of the front angle θ1, the front inclination angle θ2, the side surface angle θ3, and the holding surface angle θ4 will be described with reference to these drawings.

A. Verification of the front angle θ1 The verification result of the front angle will be described with reference to FIG. 5A is a perspective view of the tape cutter showing the front angle of FIG. 4B, and FIG. 5B is an explanatory view showing the verification result of the front angle.

  Trial blades with a front angle θ1 in the range of 100 ° to 150 ° were made as prototypes and compared from the standpoints of “Reaction at break” and “Beautiful surface of fracture” in “Evaluation index of ease of cutting”. As a result, a V-shaped fracture surface is obtained in the range of 100 ° to 118 °, and it can be confirmed that the fracture surface is uneven in the range of 118 ° to 138 °, and is further straightened in the range of 138 ° to 150 °. I was able to confirm. From this result, the front angle is obtuse, and 140 ° is preferable.

(B) Verification of the front inclination angle θ2 The verification result of the front inclination angle will be described with reference to FIGS. 6A is a side view of the tape cutter showing the front inclination angle of FIG. 4B, FIG. 6B is an explanatory view showing the verification result of the front inclination angle, and FIGS. 7A to 7D are front inclination angles of the tape cutter of FIG. 6A. It is the side view which changed the angle.

  Trial blades with a front inclination angle of θ2 ranged from 65 ° to 105 ° were fabricated, and the response at the time of breakage was compared and the cleanliness of the fracture surface was compared. As a result, it was often not cut off in the range of 65 ° to 70 °, and it was confirmed that the cut was relatively straight in the range of 65 ° to 105 ° regardless of the angle. From this result, the front inclination angle is in the range of 65 ° to 105 °, and 75 ° is preferable.

(C) Verification of side surface angle θ3 The verification result of the side surface angle will be described with reference to FIG. 8A is a side view of the tape cutter showing the side face angle of FIG. 4B, and FIG. 8B is an explanatory view showing the verification result of the side face angle.

  Trial blades with a side angle θ3 in the range of 20 ° to 140 ° were prototyped, and the response at the time of fracture was compared with the cleanliness of the fracture surface. As a result, it was confirmed that the V-shaped fracture surface was in the range of 20 ° to 40 °, the fracture surface was biased in the range of 40 ° to 80 °, and the fracture was straight in the range of 60 ° to 110 °. From this result, the side surface angle is in the range of 20 ° to 110 °, and 70 ° is preferable.

D. Verification of holding surface angle θ4 The verification result of the holding surface angle θ4 will be described with reference to FIG. 9A is a side view of the tape cutter showing the holding surface angle of FIG. 4B, FIG. 9B is a side view showing the magnitude relationship between the tape angle and the holding surface angle, and FIG. 9C shows the verification result of the holding surface angle. FIG.

  A blade with a holding surface angle θ4 in the range of 0 ° to 65 ° was prototyped, and the response at the time of fracture was compared with the cleanness of the fracture surface. As a result, because of the magnitude relationship between the holding surface angle and the tape angle, the fracture surface depends on the front angle when the holding surface angle is large, but it breaks linearly, and when the holding surface angle is small, the fracture surface is the front angle. It was confirmed that it depends on. From this result, the holding surface angle θ4 is preferably in the range of 0 ° to 65 °.

According to this dispenser 10, the adhesive tape wound body 16 is set on the tape holding portion 12 c, and the adhesive tape 17 can be pulled out from the adhesive tape wound body 16 to a desired length and cut by the cutter 13. More specifically, when the adhesive tape 17 is cut, as shown in FIGS. 1 and 10A, first, the adhesive tape 17 is pulled out from the adhesive tape roll 16 to a desired length, and the tape cutting blade of the tape cutter 13 is used. Press against 15. At this time, the projection 15 _T of the tape cutting blade 15 abuts the slit 19 ₁ of the adhesive tape.

  Next, when the adhesive tape 17 is pulled downward or obliquely downward with respect to the tape cutting blade 15, the opening of the concave groove constituting the slit is opened and enlarged, and as a result, the entire adhesive tape 17 is broken. That is, by pressing the adhesive tape against the tape cutting blade 15, the adhesive tape is broken rather than cut.

  Since this dispenser can be broken (cut) by an obtuse apex-shaped projection instead of the conventional sharp cutting blade, it can be safely and easily cut without causing injury to fingers. In addition, there is no risk of breakage or dust accumulation, and an adhesive tape having a plurality of slits arranged at predetermined intervals can be cut with a light force without using a sharp cutting blade. In addition, since it has a simple structure, it can be produced at low cost, and anyone can use it easily. The adhesive tape is not limited to one having a slit line, but may be another tape, for example, one having a perforation or a through / non-through hole.

DESCRIPTION OF SYMBOLS 10 Tape dispenser 11 Dispenser main body 12c Tape holding part 13 Tape cutter 140 ₀ Cutter main body 14a Bottom wall surface 14b Front wall surface 14c Rear wall surface 14d, 14e Side wall 14f Upper wall surface 15 Tape cutting blade 15 _T protrusion 15 ₁ Front 15 ₂ Holding surface 15 ₃ Inclined side surface 16 Adhesive tape roll 17 Adhesive tape 19 Slit line

Claims (5)

In a tape dispenser comprising: a tape holding part that rotatably holds an adhesive tape winding body; and a tape cutter that cuts the adhesive tape drawn from the adhesive tape winding body into a desired length.
The tape cutter includes a bottom wall surface of a predetermined size, front and rear wall surfaces that are erected at a predetermined height from the outer periphery of the bottom wall surface, front and rear side wall surfaces positioned between the front and rear wall surfaces, A tape cutting blade for cutting the adhesive tape on the upper wall surface, and an upper wall surface facing the bottom wall surface above the wall surface and the left and right side wall surfaces;
The tape cutting blade includes a front surface provided with a protrusion sharpened at an angle θ1 at the center of the top side of the front wall surface, a holding surface inclined at a downward slope of angle θ4 from the protrusion toward the rear wall surface, A tape dispenser comprising: left and right inclined side surfaces inclined at a downward slope of an angle θ3 from the protrusion toward the left and right side wall surfaces, wherein the front angle θ1 is an obtuse angle.   The tape dispenser according to claim 1, wherein the angle θ1 is in a range of 120 ° to 160 °.   The tape dispenser according to claim 1 or 2, wherein the front wall surface is formed of a front inclined surface inclined at an angle θ2 toward the front of the front wall surface or toward the rear wall surface.   4. The tape dispenser according to claim 3, wherein the angle [theta] 2 is in a range of 65 [deg.] To 105 [deg.].   5. The tape dispenser according to claim 1, wherein the angle [theta] 3 is in the range of 20 [deg.] To 110 [deg.], And the angle [theta] 4 is in the range of 0 [deg.] To 65 [deg.].