JP2002020707A - Masking tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a masking tape capable of efficiently carrying out a coating step and remarkably reducing repairing operation of a boundary part between a coated surface and an uncoated surface. SOLUTION: This masking tape is characterized as having a lamination constitution comprising a first adhesive tape 1 having an adhesive layer 18 releasably applicable to the ground surface 4 of a structure 3 on the undersurface side and a second adhesive tape 2 having an adhesive layer 21 releasably bonded to the top surface 19 of the first adhesive tape 1 on the undersurface side and forming the second adhesive tape 2 into a greater width than the tape width of the first adhesive tape 1 with a uniform gap G over the full length in the longitudinal direction of the tape 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a masking tape used for holding a covering material on an unpainted surface in a coating process of a structure mainly represented by a building.

[0002]

2. Description of the Related Art Masking tapes of this type are generally formed integrally with a covering material, and are formed along a boundary line between a painted surface and an unpainted surface of a structure under the ground. Were sequentially applied, and the coating material was covered on the non-painted surface.

[0003] Further, when a masking tape integrated with the above-mentioned coating material is applied, if the area of the non-painted surface exceeds the covering range of the coating material previously attached, it cannot be used. From this, on the non-painted surface as described above, an adhesive tape having an adhesive layer on one side will be adhered along the boundary line, and further, a covering material having a large area on a part of the adhesive layer of the adhesive tape. Were sequentially pasted.

[0004]

Further, in the actual painting process of the structure, taking into account the finishing condition of the boundary portion between the painted surface and the non-painted surface, each painting process of the undercoating and the finishing painting is performed in one step. It is desirable to use different adhesive tapes one by one, and from this, it was common to further apply another adhesive tape on the upper surface side of the adhesive tape attached along the boundary part. .

[0005] However, since the length of the masking tape to be applied is usually a considerable length in one structure, the length before the masking tape is applied to the boundary between the painted surface and the non-painted surface is reduced. Laminating a new adhesive tape along the adhesive tape is a very time-consuming task, and has been one of the most difficult tasks even for a skilled worker.

[0006] Even if it is possible to apply two adhesive tapes one on top of the other with a great deal of effort, since the operation of attaching the tapes is performed manually, each of the adhesive tapes may be in an irregular state. When the coating process is completed and the remaining adhesive tape for finish coating is peeled off from the ground surface after the coating process, the adhesive tape rubs on the painted surface at the boundary between the painted surface and the non-painted surface. As a result, there is a problem that the repair work on the boundary between the painted surface and the non-painted surface is greatly increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a masking tape capable of performing a coating process efficiently and greatly reducing repair work at a boundary portion between a coated surface and a non-coated surface.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, an adhesive layer provided on the lower surface side of the lower surface of the structure can be peelably attached to a lower ground of the structure. 1 adhesive tape, and a second adhesive tape provided on the lower surface side with an adhesive layer releasably adhered to the upper surface of the first adhesive tape, wherein the second adhesive tape has the first adhesive tape, It is characterized in that the adhesive tape is formed wider at a uniform interval over the entire length in the longitudinal direction of the tape than the width of the tape.

Here, the lower surface side is a concept meaning a surface of the surface on which the adhesive tape is formed, which is in contact with the base surface. Further, the forming width of each pressure-sensitive adhesive tape for making the second pressure-sensitive adhesive tape wider at a uniform interval than the first pressure-sensitive adhesive tape, and the overlapping position are not particularly limited. Specifically, the second pressure-sensitive adhesive tape is In the width direction of the first adhesive tape, the first
While maintaining a constant width over the entire length in the longitudinal direction of the pressure-sensitive adhesive tape, only one side in the width direction may protrude from the pressure-sensitive adhesive tape adhered to the base surface, or the width of the first pressure-sensitive adhesive tape It may be in the form of extending over both sides in the direction. The second adhesive tape may be of any type having an adhesive layer on one side or both sides, but a single-sided adhesive tape having an upper surface formed as a smooth surface in consideration of the work surface of the coating process. It is desirable to use. Further, the masking tape of the present invention may be in any form at the time of product shipment, but is generally desirably in the form of a roll wound around a core material or the like.

When formed in this manner, when the masking tape of the present invention is used, two steps can be performed in one step along the boundary between the painted surface and the unpainted surface on the under ground of the structure.
A plurality of adhesive tapes are sequentially attached in a state of being overlapped with each other vertically while maintaining the extent of a wide portion of a constant width over the entire length in the longitudinal direction of the adhesive tape, and further, the undercoating in the coating process is completed. Sometimes, after the second adhesive tape on the upper side of the two adhesive tapes is peeled off, at the time when the finish coating step is completed, the first adhesive tape remaining on the base surface and the painted surface are placed between the first adhesive tape and the painted surface. (2) A continuous interval corresponding to the wide portion corresponding to the distance to which the adhesive tape has been applied is formed, so that the first adhesive tape to be finally peeled does not rub against the painted surface which is already completed, and In addition, the number of repairs on the painted surface is greatly reduced, and the work efficiency is dramatically improved.

Further, in the invention described in claim 2, the second
The adhesive tape is provided with cuts for dividing the second adhesive tape in the width direction over the entire length in the longitudinal direction of the tape at the width position of the tape other than the wide portion, so that the present masking tape can be applied to the painted surface of the structure. After pasting on the boundary with the non-painted surface, before peeling off all the second adhesive tape, by peeling only one side of the side to which the coating material is applied along the cut, before applying the coating material, The coating process can be performed more smoothly without the first adhesive tape and the covering material abruptly adhering to each other. Here, the position where the cut is provided on the second adhesive tape may be provided at any position in the width direction of the second adhesive tape, other than the wide portion of the tape.

Further, according to the third aspect of the present invention, the adhesive force between the adhesive layer of the second adhesive tape and the upper surface of the first adhesive tape is weaker than the adhesive force between the adhesive layer of the first adhesive tape and the base surface. Since the first adhesive tape is formed, only the second adhesive tape is more smoothly applied to the base surface at the end of the undercoating.
It can be peeled off on the upper surface of the adhesive tape.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the masking tape of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the masking tape of the present embodiment is formed by winding two layers of two adhesive tapes 1 and 2 which are vertically overlapped to form a two-layer structure on a core material 6 to form a roll. This masking tape is applied to the lower surface 4 of the building 3 and is attached to the first adhesive tape 1 on the side holding the covering material 20 and in a state of being overlapped on the upper surface 19 side of the first adhesive tape 1. And a second adhesive tape 2 attached thereto, and the second adhesive tape 2 is formed to be wider than the first adhesive tape 1 by 2 mm on the left and right sides. At the center of the first adhesive tape, there is provided a cut 22 for dividing the tape over the entire length in the longitudinal direction of the tape. Incidentally, the masking tape of the present embodiment shows that the masking tape can be used starting from either the left or right side with respect to the ground surface 4, but as shown in FIG.
Even if only one side in the width direction of the second adhesive tape 2 is overhanging, it can be sufficiently used.

The actual use of the masking tape having the above configuration will be described with reference to FIGS. 3A and 3B. First, the present masking tape is applied to the boundary between the painted surface 5 and the non-painted surface 7 of the building 3. Part of the first adhesive tape 2 is separated and peeled along the cut surface 22 only along the lower ground 4, and then the coating material 20 is further separated along the cut 22. The second adhesive tape 2 is sequentially attached to the lower half of the adhesive layer 21. Covering material 2 as described above
0 is placed on the non-painted surface 7, a thick undercoat having a thickness of 2 to 3 mm is applied to the entire painted surface 5, and after the undercoat is dried, it is attached to the ground surface 4. Only the second adhesive tape 2 provided on the upper side of the masking tape is peeled off together with the undercoating paint adhered to the upper surface 19 of the second adhesive tape 2. still,
As described above, only the second adhesive tape 2 is peeled off because the base surface 4 is a rough surface generally formed of concrete, mortar, or the like, so that the first adhesive tape 1 and the second adhesive tape 2 are bonded to each other. This is because the force is weaker than the adhesive force between the first adhesive tape 1 and the base surface 4.

Next, as described above, only the second adhesive tape 2 is peeled off, so that the first adhesive tape 1 and the painted surface 5 are separated from each other by the overhanging portion of the second adhesive tape 2 from the first adhesive tape 1. A linear gap 8 is continuously formed on the base surface 4 between the base surface 4, and after the finish coating is performed on the painted surface 5 on which the undercoating is performed together with the gap 8, the painted surface 5 is dried. The first adhesive tape 1 remaining after the
The first adhesive tape 1 is smoothly peeled off by the gap 8 without coming into contact with the painted surface 5.

Next, a manufacturing process of the masking tape according to the present embodiment will be described with reference to FIG.

The manufacturing process of the masking tape of the present invention comprises:
First, a first substrate 11 made of a nylon material having a smooth upper surface side and a rough lower surface surface with a width of 24 mm unwound from the first substrate roll 10 is guided to the pressure-sensitive adhesive layer 13 by a guide roll 12, and further, The second base material 15 having the same structure as the first base material having a width of 20 mm and unwound from the second base material roll 14 provided above the adhesive layer 13 is guided by the guide roll 12. A guide rail 16 through which a second base material 15 passes is provided between the guide roll 12 and the second base material roll 14. The guide 22 is guided to a position where the center coincides with the center of the material 11, and a notch 22 is continuously provided at a center position in the width direction of the tape by a cutter (not shown) provided on the guide rail 16. As a result, the base materials 11 and 15 merge in a state where they are vertically overlapped with a uniform gap G left and right along the longitudinal direction.

When the base materials 11 and 15 merge, the adhesive layers 18 and 15 are formed only on the lower surface side of the first base material 11 and the second base material 15 formed in the adhesive layer 13. 21 are provided, and the smooth surface side of each of the base materials 11 and 15 is repelled without adsorbing the adhesive, so that the first adhesive tape 1 and the second adhesive tape having the adhesive layers 18 and 21 only on one side. 2 are formed. Further, as shown in FIG. 5, since the upper surface 19 forming the smooth surface of the first adhesive tape 1 and the adhesive layer 21 on the second adhesive tape 2 are in contact with each other, the adhesive tapes 1 and 2 can be easily peeled off by the user's force. The first pressure-sensitive adhesive tape 1 passes through the pressure-sensitive adhesive layer 13 in a state in which the first pressure-sensitive adhesive tape 1 is on the lower side and the second pressure-sensitive adhesive tape 2 is on the upper side. The roll is continuously wound up by the laminating rolls 17 installed on the rear side, and finally a roll-shaped masking tape as shown in FIG. 1 is formed.

[0020]

According to the present invention, the repair work at the boundary between the painted surface and the non-painted surface of the structure is greatly reduced, and the painting work can be made much more efficient.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a masking tape of the present invention.

FIG. 2 is a perspective view showing another embodiment of the masking tape of the present invention.

FIGS. 3A and 3B are longitudinal sectional views showing actual use of the masking tape of the present invention.

FIG. 4 is an explanatory view showing a manufacturing process of the masking tape of the present invention.

FIG. 5 is an enlarged view showing A in FIG. 4 in an enlarged manner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st adhesive tape 2 2nd adhesive tape 3 Building (structure) 4 Underground 18, 21 Adhesive layer 19 Upper surface 22 Cut G Interval

Claims (3)

[Claims] 1. A first pressure-sensitive adhesive tape (1) having a pressure-sensitive adhesive layer (18) releasably adhereable to a ground surface (4) below a structure (3), and a first pressure-sensitive adhesive tape (1). 1)
And a second pressure-sensitive adhesive tape (2) provided on the lower surface side with a pressure-sensitive adhesive layer (21) releasably adhered to the upper surface (19) of the second adhesive tape. A masking tape characterized by being formed wider with a uniform interval (G) over the entire length in the longitudinal direction of the tape (1) than the width of the tape of the first adhesive tape (1). The second adhesive tape (2) has a cut (22) that divides the second adhesive tape (2) in the width direction over the entire length of the tape in the width position of the tape other than the wide portion. 2. The masking tape according to claim 1, further comprising: 3. The masking tape according to claim 1, wherein the adhesive force of the adhesive layer (21) of the second adhesive tape (2) to the upper surface (19) of the first adhesive tape (1) is:
A masking tape characterized in that the adhesive strength of the first adhesive tape (1) is weaker than that of the adhesive layer (18) of the first adhesive tape (1) to the base surface (4).