JPH0118213Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a masking tape wound in two layers.

Masking tape is used to spray paint the exterior and interior walls of buildings to protect the surfaces to be painted. The first step is to paint the exterior and interior walls of this building.
As shown in Figure a, a masking tape 3 is pasted onto the window frame 1 via a masking film 2, an undercoat 4a is applied, a topcoat 4b is applied, and after drying, the tape 3 is peeled off. As shown in FIG. 1B, this coating also peels off the coated edges with the tape 3, exposing the undercoated edges 5, which does not look good.

In order to improve this, pasting two layers of masking tape 3 can be considered, but this requires the work of pasting the masking tape twice, and it is difficult to overlap two long tapes, resulting in extremely poor work efficiency. Currently, it is difficult to perform curing work on scaffolding.

As mentioned above, the currently common method of pasting masking tape does not look good, and
When pasting the sheets in layers, the work is done twice, resulting in poor work efficiency and increased labor costs, resulting in high costs. Furthermore, since the tape is of the same quality, the material cost is high and it is difficult to unwind.

The present invention was created by focusing on these drawbacks, and has developed a masking tape that allows two pieces of masking tape of different thickness to be pasted together, is easy to hold, is light to unwind, and makes curing work easier. The purpose is to provide.

That is, the masking tape of the present invention is made by laminating an upper layer tape with an adhesive layer of 5 to 150 μm and a thickness of 40 to 350 μm on top of a lower layer tape with an adhesive layer of 40 to 200 μm and a thickness of 140 to 400 μm. Features.

The details of the present invention will be explained below with reference to the drawings showing one embodiment.

FIG. 2 is a perspective view of a masking tape showing an embodiment of the present invention, FIG. 3 is an explanatory view showing the state of use,
FIGS. 4 to 6 are cross-sectional views of masking tapes showing other examples. In the figure, the same parts as in FIG. 1 are indicated by the same reference numerals.

The masking tape of the present invention has an adhesive layer 7 with a thickness of 40 to 200 μ on the lower surface of the base layer 6, a lower layer tape 8 with a total thickness of 140 to 400 μ, and a base layer located on the upper surface of the lower layer tape 8. There is an adhesive layer 10 with a thickness of 5 to 150μ on the lower surface of the material layer 9, and the total thickness is 40 to 150μ.
It consists of an upper layer tape 11 of 350μ.

As mentioned above, in the masking tape used in the present invention, the thickness of the adhesive layers 7 and 10 of the lower layer tape 8 is 40 to 200μ, preferably 50 to 130μ,
The upper layer tape 11 has a thickness of 5 to 150 μm, preferably 5 μm.
The lower layer tape 8 is thicker than the upper layer tape 11, with a thickness of 100 μm, preferably 10 μm to 50 μm. This is because the lower layer tape 8 may be adhered to a rough surface, so it is necessary to provide a certain degree of adhesive thickness in order to obtain adhesive strength. Moreover, the upper layer tape 11 is laminated on the upper surface of the lower layer tape 8 and is not particularly limited as long as it has enough strength to be easily peeled off since the paint is peeled off after undercoating without drying. The total thickness of the masking tape of the present invention is preferably 140 to 400μ, preferably 140 to 220μ.

The adhesive layer is not particularly limited as long as it is not affected by water or solvents, but preferably rubber adhesive, acrylic adhesive, urethane adhesive, etc.
Silicone-based adhesives, etc. can be used, and rubber-based adhesives have particularly good removability, and the lower layer tape 8 requires a certain degree of thickness, so rubber-based adhesives, especially adhesive layers using re-rubber, are preferable. It is.

Next, the base material layer is not particularly limited, such as cloth, paper, polyethylene, etc., but the lower layer of the tape 8 is preferably cloth or the like.

Next, an example of the use of the present invention will be explained with reference to FIG.
Thick lower layer tape 8 and thin upper layer tape 11
Two layers of masking tape are wrapped around each other and pasted along the window frame 1 on the wall to be spray painted (Figure 3a). After applying the undercoat 4a, when the upper layer tape 11 is peeled off in a semi-dry state, the upper layer tape 11 is easily peeled off since it is in a semi-dry state (FIG. 3b). After the undercoat 4a has dried and the topcoat 4b is applied (the third
Figure c) After drying and peeling off the lower layer tape 8, a good-looking coating can be formed in which the undercoat end face 5 is covered with the topcoat 4b (Figure 3d).

FIG. 4 shows the upper layer tape 11 on the upper surface of the lower layer tape 8.
This is an example in which the upper layer tape 11 is laminated with the upper layer tape 11 slightly shifted. Since the edge of the upper layer tape 11 is slightly shifted, the end surface of the undercoat can be covered with the topcoat, and the coating finish can be improved.

In FIG. 5, the edge of the adhesive layer 8 of the upper layer tape 11 is peeled off along the tape. This reduces the thickness of the tape, reduces the number of undercoated edges after peeling off the upper layer tape 11, and makes it easier to peel off the upper layer tape 11.

FIG. 6 shows a masking tape in which a cut line is provided on the lower layer tape 8 along the adhesive layer 8 of the upper layer tape 11.

As explained above, in this invention, a thin upper layer tape is layered and wrapped around a thick lower layer tape, and the tape is held and unwound in the same way as when pasting a single piece of masking tape. The ability to apply multiple sheets of tape saves the labor of painting work, resulting in an excellent paint finish and greatly reducing labor costs. In addition, compared to pasting using a conventional tape overlapping machine, it is less bulky, easier to hold, easier to unwind and easier to use, and curing work is easier.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a conventional painting process, Fig. 2 is a perspective view of a masking tape showing an embodiment of the present invention, Fig. 3 is an explanatory view showing how the masking tape is used, and Figs. FIG. 6 is a sectional view of a masking tape showing another example. 3... Masking tape, 6, 9... Base material layer,
7, 10... Adhesive layer, 8... Lower layer tape, 11...
...Top layer tape.

Claims (1)

[Scope of utility model registration request] On top of the lower layer tape, the adhesive layer is 40-200μ and 140-400μ thick, and the adhesive layer is 5-150μ and 40-350μ thick.
A masking tape characterized by being made by laminating an upper layer of tape.