JPH0741183B2 - Masking tape and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is used for coating a building or other large article when a covering sheet is attached to an unpainted surface, or when curing cement, and only for the cement surface. The present invention relates to a masking tape used for fixing a sheet when coating a sheet.

[Conventional technology]

To protect unpainted surfaces from paint adherence during building spraying and painting operations, or to protect surfaces during cement curing, traditionally wide plastic sheets,
A covering material such as paper or cloth was attached to the non-painted surface using an adhesive tape.

In order to improve the workability of such masking work, Japanese Utility Model Laid-Open No. 60-124668 discloses a masking in which an adhesive layer is provided at one end in the length direction of the tape and the other part is thinly folded into a tape shape. Disclosure of tapes
No. 8 and Japanese Utility Model Laid-Open No. 59-28539 disclose a masking tape in which one surface of the tape is coated with an adhesive and the other surface is locally coated with the adhesive.

In addition, Japanese Utility Model Laid-Open No. 59-76536 and Japanese Utility Model Showa 59-135176.
The publication discloses a masking tape in which a pressure-sensitive adhesive layer is provided alternately on each of the front and back surfaces of a tape substrate in the longitudinal direction.

[Problems to be solved by the invention]

However, according to the method of Japanese Utility Model Laid-Open No. 60-124668, it is difficult to fold the sheet thinly, and if this is further wound,
It becomes a distorted tape that is difficult to manufacture in practice. The methods disclosed in Japanese Utility Model Publication No. 59-28538 and Japanese Utility Model Publication No. 59-28539, although local, are provided with an adhesive layer on both sides of the tape, and therefore require release paper or interleaving paper. In addition, the unevenness of the thickness causes the shape of the winding tape to be distorted, and there is a drawback that the winding tape cannot be industrially handled.

In the methods disclosed in Japanese Utility Model Laid-Open No. 59-76536 and Japanese Utility Model Laid-Open No. 59-135176, pressure-sensitive adhesives are alternately provided on the front surface and the back surface of the base material in the vertical direction. Although the problem of No. 1 was solved and the masking workability was improved, it was actually difficult to alternately apply the pressure-sensitive adhesive to the front and back surfaces of the tape substrate in the longitudinal direction, and there was a problem in industrial production.

Therefore, there is a demand for a masking tape which is not only excellent in workability for painting or curing but also excellent in workability in production and which is actually easy to produce.

[Means for solving problems]

An object of the present invention is to solve the above-mentioned problems, and its constitution is a tape obtained by laminating and winding interleaving paper on one surface of a tape having adhesive layers on both sides, and A cut line that divides the tape in two in the vertical direction is provided, and further, with the interleaving paper laminated on one surface of the tape having an adhesive layer on both sides, only the interleaving paper is used for the length of the tape. It is characterized in that it is wound from one end with a cutting line for cutting in the direction.

The pressure-sensitive adhesive tape of the present invention may be a tape having a pressure-sensitive adhesive layer on both sides, for example, cloth, paper, non-woven fabric, plastic, a sheet obtained by impregnating a sheet of these laminated products with a pressure-sensitive adhesive, or a base material thereof is used. Alternatively, the tape may be formed only with the pressure-sensitive adhesive.

It is sufficient that the interleaving paper has affinity with the adhesive so that the adhesive can be peeled off appropriately. Generally, it is difficult to partially apply the pressure-sensitive adhesive, but it is easy to partially apply the release agent. Therefore, the silicone resin or the fluororesin is applied to the first interleaving paper piece through the cutting line on one surface through the cutting line. , A release agent such as wax is applied to provide a release treatment layer, and the second interleaving paper piece is not subjected to any treatment so that the second interleaving paper piece adheres well to the pressure-sensitive adhesive layer. It is preferable that the second interleaving paper piece is provided with a release treatment layer without performing anything. Still another method is to use interleaving paper provided with a release agent on both sides, one side of this interleaving paper is roughened only on the first side through a cutting line, and the other side is roughened. Roughening treatment may be performed only on the second side through the cutting line to lose the effect of the release agent.

In manufacturing such masking tape,
For example, the interleaving paper may be overlapped on the double-sided adhesive tape, and at the same time, only the interleaving paper may be cut in the length direction by a cutter and wound from one end. Also, overlay the double-sided adhesive tape and interleaving paper,
A cutting line is provided only on the interleaving paper in the tape width of the finished product. After that, this is wound around a paper tube or the like, and a cutting line provided only with an interleaving paper and a central portion of the cutting line are cut to obtain a large number of masking tapes at the same time.

The masking tape of the present invention, when unwinding, unwinds only the interleaf paper piece on the first side once through the cutting line, and returns to the original site, that is, the site where the adhesive is exposed by half in the length direction. In this case, the unwrapped second-side interleaving paper piece, the double-sided adhesive tape, and the interleaving paper piece on the first side of the layer that is one layer below are combined and unwound as shown in FIG. Is.
In the unwound tape, it is important that the adhesive is exposed along one longitudinal edge line on the front surface of the tape, and the adhesive is exposed on the back surface where no adhesive is exposed on the surface. Is. If it is provided on the entire surface, peeling after the work becomes difficult, and the adhesive applied to unnecessary portions becomes sticky, which makes the painting work difficult.

[Action]

The present invention has a two-layer structure in which a double-sided adhesive tape and interleaving paper are wound, but since the interleaving paper is divided into two in the length direction, when unwinding, the first side is cut through the cutting line. When only the interleaving paper piece is unwound once and returned to the original part, that is, the part where the adhesive is exposed by half in the length direction, the interleaving paper piece on the second side that remains without unwinding and the double-sided adhesive tape And the interleaving paper piece on the first side of the layer immediately below and unwinding, as shown in FIG. 1, the interleaving paper is attached to different positions on both sides of the double-sided adhesive tape in the longitudinal direction. The three-layer masking tape can be unwound to the end.

〔Example〕

FIG. 1 is a perspective view showing a state of being wound as a masking tape, FIG. 2 is a perspective view showing a state of finished manufacturing, and FIG. 3 is a sectional view of one masking tape.

1 is a double-sided adhesive tape, 2 is an interleaving paper, and 3 is a cutting line provided in the center of the interleaving paper 2. After the interleaving paper 2 was laminated on the double-sided adhesive tape 1 made of rubber and having viscoelasticity, the cutting line 3 was provided only on the interleaving paper 2 and was wound around the paper tube 4 from one end.
The double-sided adhesive tape and the interleaving paper 2 divided into the first interleaving paper piece 5 and the second interleaving paper piece 6 by the cutting line 3 as shown in FIG.
A layered wound masking tape was obtained.

In using this masking tape, first, only the first interleaving paper piece 5 was peeled off until one layer was returned to the original cut, and when the masking tape was returned, it was left on the outermost double-sided adhesive tape 1 as shown in FIG. The sheet was cut together with the end of the second interleaf paper piece 6. Thereafter, the second interleaving paper piece 6 is attached to the second edge line 9 of the outer layer 7 of the double-sided adhesive tape, and the first interleaving paper piece 5 is attached to the first edge line 10 of the inner layer 8 of the double-sided adhesive tape. The masking tape having the cross-sectional structure as shown in FIG. 3 could be unwound to the end by unwinding as shown in FIG. In FIG. 3, 11 is a release treatment layer. When the release treatment is applied to different sides of the interleaving paper 2 in this way, the interleaving paper adheres well to the area where the masking tape is necessary and can be easily peeled off from the unnecessary area.

In the present embodiment, the release agent was applied to each half of the interleaving paper, but the release agent is applied to the entire surface and the half surfaces of different parts are roughened to remove the release property and the above effect is obtained. You can also get Further, although the cutting line 3 is provided at the center of the slip sheet, it may be provided so as to be offset to one of them depending on the purpose of use. In addition, as a more efficient manufacturing method, a double-sided adhesive tape and interleaving paper with a width that allows multiple masking tapes to be used, are provided with the same number of cutting lines as the adhesive tape to be manufactured, and after winding, the cutting line and the cutting line A large number of masking tapes can be obtained at the same time by cutting between and.

〔The invention's effect〕

The invention makes it possible to produce masking tapes which are very easy to use in a very industrially efficient manner.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which the masking tape is being unwound, FIG. 2 is a perspective view showing a state after manufacturing, and FIG. 3 is a sectional view. In the drawings, reference numeral 1 is an adhesive tape, 2 is an interleaving paper, 3 is a cutting line, 4 is a paper tube, 5
Is a first interleaving paper piece, 6 is a second interleaving paper piece, 7 is an outer layer, 8 is an inner layer, 9 is a second edge line, 10 is a first edge line, and 11 is a release treatment layer.

Claims (2)

[Claims] 1. A tape obtained by laminating and winding interleaving paper on one surface of a tape having an adhesive layer on both sides, wherein a cutting line that divides the interleaving paper into two in the length direction is provided. Masking tape. 2. A tape having a pressure-sensitive adhesive layer on both sides, with interleaving paper laminated on one surface, and wound from one end with a cutting line for dividing only the interleaving paper in the length direction of the tape. Method for manufacturing masking tape.