JP6109390B1 - Masking tape for blurring and manufacturing method thereof - Google Patents

Abstract

An object of the present invention is to provide a masking tape for blurring that is easy to manufacture and can improve product yield. A blur masking tape has a tape base portion and an end edge portion. The tape base 21 has a flat belt shape, and an adhesive layer 41 is provided on one surface thereof. The edge part 22 is provided in the longitudinal direction end part of the tape base part 21 over the whole length direction. When the adhesive layer 41 of the tape base 21 is bonded to the adherend surface, a part of the outer peripheral surface 31 of the end edge portion 31 of the end edge portion 22 forms a gap with the adherend surface. The tape base portion 21 and the end edge portion 22 are formed of a soft thermoplastic elastomer, and the end edge portion 22 is formed integrally with the tape base portion 21 so as to be thicker than the tape base portion 21. [Selection] Figure 2

Description

  The present invention relates to a masking tape for blurring and a method for manufacturing the same.

  When a partial coating is performed on the object to be painted such as the surface of the vehicle body, a masking process is performed so that a coating film is not formed on a portion where the coating is not performed. In the masking process, a masking tape is affixed to the boundary with the part to be painted. When using a general masking tape that is flat in the entire short direction, the boundary between the painted and unpainted areas appears clearly, and the finish may be fine depending on the application. Cannot be obtained. For this reason, a blurring masking tape is used in which the end in the short direction of the strip tape is bent in parallel with the longitudinal direction and a linear member such as a string is wrapped (see, for example, Patent Document 1).

  When this blurring masking tape is used, a portion that swells by enveloping the linear member does not adhere to the painted surface to be painted, and a gap is formed between the painted surface. At the time of painting, the sprayed paint appropriately enters the gap, and a coating film is also formed on that portion. Therefore, the coating film formed on the painted part is suitably expanded into the gap, and the formation of a clear boundary line is suppressed. This makes it possible to blur the boundary line between the painted portion and the unpainted portion.

Japanese Patent No. 4074945

  By the way, the conventional masking tape for blurring is a process in which, as a manufacturing process, after forming a belt-like tape provided with an adhesive layer on one surface, the end in the short direction is folded and the wire member is wrapped while being folded. Go through. However, in the process of wrapping the filament member, the wrapping often fails and the product yield is poor.

  Therefore, an object of the present invention is to provide a masking tape for blurring that can be easily manufactured and can improve the product yield.

  In order to solve the above problems, the masking tape for blurring according to the present invention has a flat strip shape, a tape base portion provided with an adhesive layer on one surface, and the tape base portion at one end portion in the short direction of the tape base portion. Is provided over the entire area in the longitudinal direction, and has a gap forming surface that forms a gap with the adherend surface when the tape base is bonded to the adherend surface, and is thicker than the tape base. The tape base portion and the end edge portion are integrally formed of a soft thermoplastic elastomer.

  According to the present invention, when the tape base is bonded to the adherend surface, a gap is formed between the end surface and the adherend surface by the gap forming surface of the edge portion. Since a coating film is also formed in the gap portion, the boundary line between the painted portion and the unpainted portion can be blurred. And since the edge part is integrally formed with the tape base, there is no need to wrap the filament member during manufacturing, unlike the conventional masking tape, and the masking tape for blurring can be easily manufactured to improve the product yield. be able to.

  Moreover, the boundary part between the part to be painted and the part not to be painted may have a curved surface shape or have irregularities. When the masking tape is applied along the boundary portion, the tape base portion is formed in a flat belt shape with a soft thermoplastic elastomer, so that followability of the boundary portion to the curved surface and irregularities can be ensured. On the other hand, the edge part formed of the soft thermoplastic elastomer is formed thicker than the tape base, and the strength against external force is strengthened compared to the tape base. For this reason, it is possible to maintain the gap forming surface even in a state where the edge portion is likely to be crushed by being adhered while following a curved surface, unevenness or the like, or by applying an external force in the bonded state. Thereby, it can suppress that a clearance gap is crushed and a blurring effect becomes inadequate.

The perspective view which shows a part of masking tape for blurring. AA sectional drawing of FIG. Explanatory drawing which shows the adhesion | attachment aspect of the masking tape for blurring. Explanatory drawing which shows the mode of painting. Explanatory drawing which shows a mode that an edge part floats. Sectional drawing which shows another example of the masking tape for blurring. Sectional drawing which shows another example of the masking tape for blurring.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the blurring masking tape 10 has a tape length of, for example, 10 m to 20 m, and includes a strip-shaped tape portion 11 and an adhesive portion 12.

  As shown in FIG. 2, the strip-shaped tape portion 11 has a tape base portion 21 and an end edge portion 22. The tape base 21 has a flat belt shape (see also FIG. 1), and the length L1 in the short direction is set to 10 mm, for example. Moreover, the thickness T of the tape base 21 is set to 0.5 to 1 mm, and it is preferable to set it to less than 0.7 mm within the range. The tape base 21 is provided with the adhesive portion 12 on one surface thereof. Of the tape base 21, the surface on which the adhesive portion 12 is provided is referred to as an adhesive surface 21a, and the opposite surface is referred to as a non-adhesive surface 21b.

  The end edge portion 22 is provided over the entire region in the tape longitudinal direction at one end portion of the tape base portion 21 in the tape short direction. The end edge portion 22 is formed so that a cross section in a direction orthogonal to the tape longitudinal direction has a substantially circular shape as a whole and is convex with respect to the adhesive surface 21 a of the tape base portion 21. The end edge portion 22 has an end edge front end portion 31 and an end edge base portion 32.

  The edge tip 31 is provided at the tip of the edge 22 and has a substantially semicircular cross section in the tape short direction. The diameter of this substantially semicircular shape is set to 2.5 mm, for example. The edge base portion 32 is provided on the tape base portion 21 side of the edge tip portion 31, and forms a first surface 32a that rises perpendicularly to the adhesive surface 21a of the tape base portion 21 and the same plane as the non-adhesive surface 21b. And a second surface 32b. When the upper and lower sides are specified with reference to the state of FIG. 2, the first surface 32 a that is a vertical surface is provided so as to rise to a position near the upper end of the end tip 31. The edge base 32 is formed by a portion sandwiched between the first surface 32a and the second surface 32b.

  The tape base portion 21 and the end edge portion 22 having the above-described configuration are integrally formed using a soft thermoplastic elastomer as a material. Extrusion molding is used as a manufacturing method in the case of integrally forming both. At the time of extrusion molding, the tape base 21 and the edge 22 can be colored by mixing a coloring material into the thermoplastic elastomer. As described above, since the first surface 32a is formed on the edge base portion 32 in the edge portion 22, even if the edge portion 22 is contracted after extrusion, the tensile force due to the contraction is applied to the tape. Acting on the base 21 is suppressed. As a result, the occurrence of sink marks is suppressed at the boundary portion between the tape base portion 21 and the end edge portion 22.

  Examples of the thermoplastic elastomer used as the material include styrene (TPS), olefin (TPO), polyurethane (TPU), polyester (TPEE), and vinyl chloride (TPVC). Not only these may be used alone, but also a mixture thereof may be used.

  Of these, it is preferable to use an olefinic thermoplastic elastomer (TPO). When the object to be painted is a metal surface, such as the surface of a vehicle body, the temperature of the object to be painted is expected to increase particularly in summer. Therefore, it is preferable that the strip-shaped tape part 11 has heat resistance, for example to 100-120 degreeC. In order to provide such heat resistance, an olefin-based thermoplastic elastomer (TPO) is suitable as a material. Moreover, the coating object to which the masking tape 10 for blurring is adhered may have various shapes such as a curved surface and unevenness as well as a flat surface. In order to adhere the blur masking tape 10 while suitably following such a shape, it is required to be soft. There is an advantage in using an olefin-based thermoplastic elastomer (TPO) from the viewpoint of easy adjustment when adjusting the degree of softness.

  The tape base portion 21 and the end edge portion 22 that are integrally formed in this manner are subjected to corona treatment on the entire surface after being extruded. By passing through the step of applying the corona treatment, it is possible to prevent the coating attached to the surfaces of the tape base portion 21 and the edge portion 22 from being peeled off during coating. As a result, it is possible to suppress the paint that has been peeled off from the surface from adhering to the painted part and deteriorating the finished state of the paint.

  Next, the adhesion part 12 is demonstrated. As shown in FIG. 2, the adhesive portion 12 has an adhesive layer 41 and a release material 42. The adhesive layer 41 is made of an adhesive provided on the adhesive surface 21 a of the tape base 21. The pressure-sensitive adhesive layer 41 is provided on the pressure-sensitive adhesive surface 21a in the next step after the tape base portion 21 and the edge portion 22 are extruded and further subjected to corona treatment. Examples of the pressure-sensitive adhesive used for the pressure-sensitive adhesive layer 41 include acrylic, silicon-based, rubber-based and other various pressure-sensitive adhesives.

  The pressure-sensitive adhesive layer 41 is provided on the pressure-sensitive adhesive surface 21a in a range slightly inward from both ends of the tape base 21 in the tape short direction. Therefore, there are non-adhesive portions 23a, 23b between each end of the adhesive layer 41 in the tape short direction and each end of the tape base 21, and the length L2 of the non-adhesive portions 23a, 23b is: For example, it is set to 1 mm. In this case, the length L3 of the adhesive layer 41 in the tape short direction is set to 8 mm.

  The release material 42 is obtained by coating paper or a resin film with a release agent, and is provided on the entire surface of the adhesive layer 41. The release material 42 is further provided on the surface after the adhesive layer 41 is formed. While the blurring masking tape 10 is unused, the adhesive layer 41 is suitably protected by the release material 42. When the blurring masking tape 10 is used, the release material 42 is peeled off to expose the adhesive layer 41. Thereby, it becomes possible to adhere the adhesive surface 21a of the masking tape 10 for blurring to the object to be coated using the adhesive layer 41.

  In addition, the thickness of the adhesion layer 41 and the peeling material 42 is the same as that in a general tape, and it is not necessarily formed thick. In FIG. 2, in order to clearly indicate the presence of the adhesive layer 41 and the release material 42, the thickness is shown to be thicker than the actual thickness. However, in the masking tape 10 for blurring in the present embodiment, the adhesive layer 41 and the release material 42 are It does not have a specific thickness.

  Here, as described above, the end edge portion 22 of the strip-shaped tape portion 11 is formed to be convex with respect to the adhesive surface 21 a of the tape base portion 21. For this reason, when the adhesive surface 21a is bonded to the object to be coated, the end edge 22 is bent with the end of the tape base 21 as a fulcrum (see FIG. 3C). Therefore, a groove 24 is formed in the non-adhesive surface 21b of the tape base 21 to assist the bending. The groove portion 24 is provided over the entire area in the tape longitudinal direction on the opposite side of the edge of the adhesive layer 41 from the position where the edge on the edge 22 side is present. In addition, the groove part 24 is shape | molded simultaneously when the tape base 21 and the edge part 22 are integrally molded.

  The above is the configuration of the blurring masking tape 10 in the present embodiment. Next, a usage pattern in which this blurring masking tape 10 is used when partially painting the surface of a painting object such as a vehicle body will be described with reference to FIGS.

  When painting an object to be painted such as a vehicle body, the blurring masking tape 10 is adhered to a boundary portion between a portion to be painted and a portion not to be painted. In adhering the blur masking tape 10, as shown in FIG. 3A, the release material 42 provided on the adhesive layer 41 of the blur masking tape 10 is peeled off to expose the surface of the adhesive layer 41. In this state, as shown in FIG. 3B, the adhesive surface 21a of the tape base 21 is opposed to the adherend surface 51 to be coated, and the tape base 21 of the masking tape 10 for blurring is sequentially bonded along the boundary portion. I will let you. In this case, since the masking tape 10 for blurring is formed of a soft thermoplastic elastomer, even if the boundary portion has a curved surface or unevenness, it can be adhered while following the curved surface or unevenness.

  When bonding the masking tape 10 for blurring, the end edge portion 22 that protrudes in a convex shape from the adhesive surface 21a of the tape base portion 21 has the end portion of the tape base portion 21 as a fulcrum as shown in FIG. It can be bent. In that case, the groove part 24 formed in the non-adhesive surface 21b of the tape base part 21 will be in the state crushed with bending. Then, due to the bending of the end edge portion 22, a part of the end edge tip portion 31 of the end edge portion 22 abuts while pressing the adherend surface 51. When this abutting portion is a pressing abutting portion 33, the side opposite to the tape base 21 from the pressing abutting portion 33 is between the outer peripheral surface 34 of the edge tip 31 and the adherend surface 51. A gap S is formed (see also FIGS. 4 and 5). Of the outer peripheral surface 34 of the end edge tip 31, a portion where the gap S is formed is referred to as a gap forming surface 34 a. Since the gap forming surface 34a has an arc shape that is convex toward the adherend surface 51, the gap S opens toward the portion to be painted, and from the opening to the pressing contact portion 33 side ( It has a shape in which the height of the gap S decreases toward the back side. The pressing contact portion 33 here corresponds to a pressing portion.

  In this way, the masking tape 10 for blurring is adhered to the boundary portion between the painted portion and the non-painted portion, and the non-painted portion is further masked. Then, as shown in FIG. 4, the sprayed spray device 52 such as a spray gun is used to spray the sprayed paint on the painted surface of the painted portion. As a precaution, in FIG. 4, the size of the paint spraying device 52 compared to the blurring masking tape 10 is greatly different from the actual one. For convenience of explanation, it is only shown in such a size.

  By spraying the paint, the mist paint is deposited on the painted surface of the painted part, and a coating film is formed on the painted surface. In addition, the mist-like paint that has entered the gap S forms a blurring coating film that decreases in height from the opening toward the pressing contact portion 33 on the back side along the gap forming surface 34a. Is done.

  Next, after the coating film and the blurring coating film are dried, when the masking tape 10 for blurring is peeled off, the coating film and the blurring coating film remain on the painted surface. Due to the presence of the coating film for blurring, the formation of a sharp boundary line at the boundary portion where the coating film provided on the coating portion is interrupted is suppressed, and a blurring effect is obtained at the boundary portion.

  Further, as shown in FIG. 5, the pressing contact portion 33 exists at a position away from the end portion of the tape base portion 21 in a state where the blurring masking tape 10 is bonded to the adherend surface 51. For this reason, the edge 22 can be lifted by an external force with the end of the tape base 21 as a fulcrum, and the gap S can be expanded to the back side. Then, if the air pressure at the time of spraying a mist-like coating material with the coating spray apparatus 52 is adjusted, the edge part 22 can be lifted with the air pressure. Thereby, the mist-like paint can enter further into the gap S, and the range in which the blurring coating film is formed is expanded. Thereby, the degree of blurring of the boundary portion is increased.

  Further, the non-adhesive portion 23 a is provided on the adhesive surface 21 a of the tape base 21, and the adhesive layer 41 is provided only before the end of the tape base 21. For this reason, between the press contact part 33 of the edge part 22 and the edge part of the adhesion layer 41, compared with the structure provided more until the adhesion layer 41 reached until the edge part of the tape base 21, It has become. For this reason, the end edge portion 22 is more easily lifted. Thereby, the edge part 22 can be lifted even with less air pressure.

  The present embodiment is as described above. In summary, the following effects can be obtained.

  (1) The blur masking tape 10 has a tape base portion 21 and an edge portion 22, and when bonded to the adherend surface 51 to be painted, a gap is formed that is a part of the outer peripheral surface 34 of the edge portion 22. A gap S is formed between the surface 34 a and the adherend surface 51. At the time of painting, the sprayed mist paint enters the gap S, and a blurring coating film is formed there. By forming a coating film for blurring continuously on the paint film on the painted part, it is possible to suppress the formation of a sharp boundary line at the boundary part between the painted part and the non-painted part. Can be blurred. Therefore, the boundary portion can be finished with a good appearance.

  (2) The tape base portion 21 and the end edge portion 22 are formed of a soft thermoplastic elastomer, and the end edge portion 22 is extruded integrally with the tape base portion 21 so as to be thicker than the tape base portion 21. ing. By integrally molding the two in this way, it is not necessary to wrap the filament member during manufacturing as in the conventional masking tape for blurring, and the masking tape for blurring 10 can be easily manufactured and the yield can be improved. it can.

  In addition, in the conventional masking tape for blurring, due to the difficulty of the operation of wrapping the filament member, the product state of the portion where the filament member is encapsulated varies and is not uniform. If the product has such a variation, a gap S formed between the portion where the linear member is wrapped and the adherend surface 51 when the conventional masking tape for blurring is adhered to the adherend surface 51. There is also a variation in the size of. As a result, the blurring coating film formed in the gap S also varies, and a uniform blurring effect cannot be obtained.

  In this respect, in the masking tape 10 for blurring according to the present embodiment, the tape base portion 21 and the end edge portion 22 are integrally formed by extrusion molding. Therefore, the cross-sectional shape of the end edge portion 22 is along the longitudinal direction of the tape. It becomes a uniform state. As a result, it is possible to suppress the size of the gap S, and hence the variation in the blurring coating film formed in the gap S, and obtain a uniform blurring effect along the boundary line between the painted portion and the non-painted portion. .

  (3) Since the tape base portion 21 is formed in a flat belt shape with a soft thermoplastic elastomer, even if the boundary portion between the painted portion and the non-painted portion is curved or uneven, the curved surface or unevenness It can be made to adhere while following. On the other hand, the edge part 22 is formed thicker than the tape base part 21, and the intensity | strength is ensured. For this reason, even when the masking tape 10 for blurring adheres to a curved surface, unevenness, or the like, or an external force is applied in the bonded state, the edge portion 22 is likely to be crushed. 34a can be maintained. Thereby, it can suppress that the blurring effect becomes inadequate.

  (4) The edge base portion 32 of the edge portion 22 has a first surface 32 a that rises perpendicularly to the adhesive surface 21 a of the tape base portion 21. By providing the first surface 32a, even if the end edge portion 22 contracts after extrusion, the tensile force due to the contraction is suppressed from acting on the tape base portion 21. As a result, the occurrence of sink marks is suppressed at the boundary portion between the tape base portion 21 and the end edge portion 22.

  (5) The edge 22 is formed so as to be convex with respect to the adhesive surface 21 a of the tape base 21. When the tape base 21 is bonded to the bonded surface 51, the bonded surface is pressed by the pressing contact portion 33. 51 is pressed. The depth of the gap S formed by the gap forming surface 34 a and the adherend surface 51 is a range from the opening of the gap S to the pressing contact portion 33. Since the depth of the gap S is the same throughout the entire length in the tape longitudinal direction, the width in which the blurring coating film is formed can be made uniform, and the blurring at the boundary portion can be finished finely.

  Further, when spraying the mist-like paint by the paint spraying device 52, if the air pressure is adjusted so as to resist the pressing force to the adherend surface 51 by the pressing contact portion 33, the edge portion 22 is caused by the air pressure. Can be raised. The gap S is expanded due to the rising of the end edge portion 22, and the paint can be further penetrated, so that the width of the coating film for blurring can be expanded. By extending the blur coating, it is possible to enhance the blur effect at the boundary between the painted and non-painted areas, or to adjust the formation range of the blur paint film to obtain a variety of blur effects. .

  (6) The adhesive layer 41 provided on the tape base 21 has an end on the side of the edge portion 22 provided inside the end of the tape base 21, and the adhesive surface 21 a of the tape base 21 has an adhesive A non-adhesive portion 23 a exists on the side of the layer 41. Compared to the case where the non-adhesive portion 23a is not provided, the distance between the end portion of the adhesive layer 41 and the pressing contact portion 33 is increased by the amount of the non-adhesive portion 23a. When the edge portion 22 is floated, the end edge portion 22 is easily floated.

  (7) On the non-adhesive surface 21 b of the tape base portion 21, a groove portion 24 is formed at a location corresponding to the position where the edge of the adhesive layer 41 exists. When the adhesive surface 21a of the tape base 21 is bonded to the adherend surface 51 due to the presence of the groove portion 24, the edge portion 22 that is convex with respect to the adhesive surface 21a has the end of the tape base 21 as a fulcrum. It becomes easy to bend. Further, if the groove 24 is provided on the adhesive surface 21 a, the bending of the end edge 22 causes a force to expand the groove 24, and the possibility that a crack is generated from the groove 24 increases. In that respect, since the groove part 24 is provided in the non-adhesive surface 21b, the possibility that the tape base part 21 may crack due to the formation of the groove part 24 can be reduced.

  (8) The entire surface of the tape base portion 21 and the end edge portion 22 is subjected to corona treatment. By this corona treatment, it is possible to prevent the paint adhering to the blurring masking tape 10 from peeling off and smearing the painted portion during painting.

  In addition, this invention is not restricted to above-described embodiment, For example, you may implement as follows. In another embodiment described below, the thicknesses of the adhesive layer 41 and the release material 42 are the same as those in the above embodiment, as in the case of a general tape.

  (A) In the above embodiment, the end edge portion 22 has a substantially circular cross section as a whole, but various shapes such as an elliptical shape, a triangular shape, a quadrangular shape, a pentagonal shape, and a polygonal shape higher than that are available. You may form so that it may make. That is, the shape of the end edge portion 22 is sufficient if it has a gap forming surface 34a in which a gap S is formed with the adherend surface 51 when the blur masking tape 10 is bonded.

  Moreover, even when the shape of the end edge portion 22 is formed so that the cross section thereof is substantially circular as a whole as in the above embodiment, the shape of the end edge portion 22 can be different from the above embodiment. . For example, as shown in FIG. 6A, the entire cross section of the edge portion 22 is formed into a circular shape, or the first surface 32a of the edge base portion 32 is inclined as shown in FIG. 6B. It may be a surface. In addition, as shown in FIGS. 6C and 6D, the end edge portion 22 may have a convex shape with respect to the non-adhesive surface 21 b of the tape base portion 21.

  (B) In the said embodiment, the adhesion layer 41 is provided in the range inside the both ends of the tape transversal direction in the adhesion surface 21a of the tape base 21, and the adhesion surface 21a is provided on both sides of the adhesion layer 41. Non-adhesive portions 23a and 23b are provided. Instead, a configuration in which the adhesive layer 41 is provided over the entire adhesive surface 21a and the non-adhesive portions 23a and 23b are not formed may be employed.

  (C) In the above embodiment, the groove 24 is provided on the non-adhesive surface 21b of the tape base 21, but a configuration in which the groove 24 is omitted may be employed. Since the tape base portion 21 and the end edge portion 22 are integrally formed using a soft thermoplastic elastomer as a raw material, the end portion of the tape base portion 21 is used as a fulcrum at the time of bonding to the adherend surface 51 even without the groove portion 24. This is because it can be folded sufficiently.

  (D) In the said embodiment, you may divide | separate the peeling material 42 provided in the adhesion layer 41 into plurality in the transversal direction. In this case, among the divided release materials 42, the release material 42 on the side opposite to the edge portion 22 is peeled off while leaving the release material 42 on the side of the edge portion 22, and only the portion is adhered. Further, the end edge portion 22 can be made to float more easily. As a result, the space into which the paint enters can be further expanded to obtain more various blurring effects.

  (E) In the said embodiment, the adhesive part 12 is provided there by making the flat part of the side where the edge part 22 becomes convex out of a pair of flat part which the tape base 21 has into the adhesive surface 21a. Instead, as shown in FIG. 7, a configuration in which the adhesive portion 12 is provided on the opposite side (the non-adhesive surface 21b side in the above embodiment) may be employed. Even in this configuration, if the masking tape 10 for blurring is bonded to the adherend surface 51, the gap S is formed between the gap forming surface 34a of the end edge 31 and the adherend surface 51. It is possible to form a coating film. Therefore, the flat part which provides the adhesion part 12 among a pair of flat parts which the tape base 21 has may be any.

  (F) In the above-described embodiment, the corona treatment is performed on the tape base 21 and the edge 22, but the corona treatment can be omitted. However, in order to suppress the peeling off of the paint, it is preferable to perform a corona treatment.

  DESCRIPTION OF SYMBOLS 10 ... Masking tape for blurring, 21 ... Tape base, 21a ... Adhesive surface, 22 ... End edge part, 24 ... Groove part, 32a ... First surface (vertical surface), 34a ... Gap formation surface, 41 ... Adhesive layer, 42 ... Release material, 51 ... surface to be bonded, S ... gap.

Claims (8)

A tape base having a flat belt shape and an adhesive layer provided on one side;
Gap formation that is provided at one end of the tape base in the short direction over the entire length of the tape base and forms a gap between the tape base and the adherend surface when the tape base is adhered to the adherend surface. An edge portion having a surface and formed thicker than the tape base portion;
Prepared,
The blur masking tape, wherein the tape base and the edge are integrally formed of a soft thermoplastic elastomer. The edge is
It is formed so as to be convex with respect to the surface on which the adhesive layer of the tape base is provided, and has a pressing portion that presses the adherend surface when the tape base is adhered to the adherend surface,
The blur masking tape according to claim 1, wherein the gap forming surface is provided on a side opposite to the tape base from the pressing portion.   3. The masking for blurring according to claim 1, wherein the edge portion is provided with a vertical surface that rises perpendicularly to the surface from the surface on which the adhesive layer of the tape base is provided. 4. tape.   The non-adhesive part is provided between the edge part of the said adhesive layer, and the said edge part on the surface in which the said adhesive layer of the said tape base part was provided, The any one of Claim 1 thru | or 3 characterized by the above-mentioned. 2. A masking tape for blurring according to item 1.   The tape base is provided with a groove on the surface opposite to the surface on which the adhesive layer is provided, on the side opposite to the position where the edge of the adhesive layer exists on the one end side. The masking tape for blurring according to any one of claims 1 to 4, wherein:   The release layer is provided in the adhesive layer along the longitudinal direction of the tape base, and the release material is divided into a plurality in the short direction. Masking tape for blurring as described in 1. A tape base having a flat belt shape and an adhesive layer provided on one side;
Gap formation that is provided at one end of the tape base in the short direction over the entire length of the tape base and forms a gap between the tape base and the adherend surface when the tape base is adhered to the adherend surface. An edge portion having a surface and formed thicker than the tape base portion;
A method of manufacturing a masking tape for blurring provided,
A method for producing a masking tape for blurring, characterized in that the tape base and the edge are integrally formed of a soft thermoplastic elastomer by extrusion molding.   8. The method for producing a masking tape for blurring according to claim 7, further comprising a step of performing corona treatment on the entire surface of the tape base portion and the end edge portion integrally formed by the extrusion molding.

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