JPH06269708A - Selective coating method and masking sheet for coating - Google Patents

Abstract

PURPOSE:To execute coating by alternately exposing parting edges with curing sheets by sticking masking tapes to selective coating parts and fixing the curing sheets thereto, to easily execute the selective coating by a piece of masking sheet and thereby, to reduce the cost as well. CONSTITUTION:The parting edge 10 of the lower masking tape automatically forms the other parting line when the upper masking tape 6 is successively stuck by aligning its parting edge 9 to the parting line of the coating part of a coating body 16 in the selective coating method. The parting edge 10 of the lower masking tape 3 is exposed when the fixed curing sheet 7 is lifted to cover the non-coating part 17 and is temporally fixed by the masking tape 13 provided at the other side edge. Coating 18 is formed when coating is executed in this state. Thereafter, an uncoating part 17 segmented by the parting edge 9 is exposed when the masking tape 13 is peeled. The coating 18 is then coated with the curing sheet 7 and is masked and, therefore, the coating 19 is formed on the uncoating part 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of separately painting and a masking sheet for painting used therefor.

[0002]

2. Description of the Related Art Conventionally, in car body painting or the like, it has been practiced to separately paint in two colors and to attach trim materials or the like to the separately painted parts for finishing. Also, the body
It is also practiced to paint the surface and the lower part of the body with a different type of paint, and attach a trim material to the differently painted parts.

When such separate coating is performed, one surface side to be separately coated is first coated with a masking sheet, then the masking sheet is peeled off, and another masking sheet is used. Although painting is performed by covering the surface side after painting, the masking sheet has to be replaced, the masking process is troublesome, the painting work is complicated and inefficient, and the cost is increased. It is also a cause.

[0004]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to make it possible to easily and sufficiently switch the masking portion during separate coating with a single masking sheet, without having to replace the masking sheet many times. It is what

[0005]

According to the present invention, a masking tape having cut edges on both sides for making a cut line in painting is attached to differently coated portions, and the masking tape is used for masking. The curing sheet is fixed, one cutting edge is exposed, and the other cutting edge and the unpainted side are coated, and then the fixed curing sheet is turned over. The other part of the cutting edge is exposed, and the unpainted part is coated so as to cover the part where the painting has been completed, so that different paintings can be easily performed.

[0006]

EXAMPLES Examples will be described below. On the lower masking tape 3 having a pressure-sensitive adhesive layer 2 formed on one surface of a suitable substrate 1 such as paper, plastic film, non-woven fabric, etc. An upper masking tape 6 having an adhesive layer 5 formed thereon is attached to one surface of the material 4, and a curing sheet 7 is fixed to the upper masking tape. In the illustrated example, the upper masking tape 6 is projected from one side edge 8 of the lower masking tape 3, and the protruding side edge is one of the cutting edges 9, and the lower masking tape facing this is formed.
The other side edge of the lower masking tape 3 is used as the other cutting edge 10, and the curing sheet 7 fixed to the upper masking tape 6 covers the cutting edge 10 of the lower masking tape.

The curing sheet 7 is made of kraft paper, plastic film or other sheet material. In the case of a plastic film, the surface is corona treated,
It is more preferable to include calcium carbonate. The curing sheet is formed in a size suitable for the intended use so that the portion to be masked can be sufficiently covered.

A masking tape 13 is attached to the other side edge 11 of the curing sheet so that the adhesive layer 12 is partially exposed from the back surface side. In this case, the pressure-sensitive adhesive layer can be directly formed on the other side edge of the curing sheet. In the illustrated example, such a masking sheet 14 is formed long, and it is easier to use if cut lines such as perforations 15 are provided at regular intervals corresponding to the length to be used.
Such a masking sheet may be wound as it is as shown in the figure, or it may be convenient to fold the curing sheet portion into several parts to narrow the width and then to wind the masking sheet.

Cutting edges 9 of the upper masking tape 6
Are attached so as to be aligned with the cut lines of the painted portion of the painted body 16, and the cut edge 1 of the lower masking tape 3 is attached.
0 also naturally forms the other dividing line. Next, the curing sheet 7 is lifted to cover the non-painted portion 17 and temporarily attached with the masking tape 13 provided on the other side edge, and the cut edge 10 of the lower masking tape is exposed. Therefore, when painting is performed in this state, the painting part is painted 18 (FIG. 2A).

After that, when the masking tape 13 is peeled off, the unpainted portion 17 defined by the cutting edge 9 is exposed, and the painted portion 18 that has been painted is covered and masked. Painting 19 is performed (Fig. 2
(B)). In this way, it is possible to surely paint separately, so if the masking sheet is peeled off and the trim material 20 is stuck or fixed on it and fixed so as to straddle both the dividing lines, it is not painted. The parts are also hidden by this, and the different paint finishes beautifully (Fig. 2
(C)).

In the case of the above coating, it is possible to first perform the coating 19 in the state of FIG. 2 (b) and then perform the coating 18 in the state of FIG. 2 (a). Further, such separate coating can be widely used not only for the upper and lower coating separately but also for the left and right coating separately.

In the structure shown in FIG. 3, both side edges of the lower masking tape 25 are cut lines 26 and 27. In this case, the upper masking tape 2 is formed.
No. 8 is not directly attached to the coated body, so the curing sheet 7 can be fixed by using an ordinary tape other than the masking tape, and the curing sheet can be directly attached to the lower masking tape. It can also be attached to and fixed.

[0013]

As described above, according to the present invention, by using a single masking sheet, a wide variety of coatings can be easily applied separately for masking other than the above-mentioned automobiles. There is no need to replace the sheets, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a partially omitted perspective view showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a coating process in order of (a), (b), and (c).

FIG. 3 is a cross-sectional view showing a modified example.

[Explanation of symbols]

 1, 4 Base material 2, 5 Adhesive layer 3 Lower masking tape 6 Upper masking tape 7 Curing sheet 9 and 10 Cutting edge 13 Masking tape 14 Masking sheet 15 Perforation

Claims (2)

[Claims] 1. In separate coating, a masking tape having cutting edges on both sides is attached to the different coating portions, and a curing sheet is fixed to the masking tape to expose one cutting edge. And coat the other cutting edge and the non-painted part side, then turn over the curing sheet to expose the other cutting edge covered and pre-painted with the curing sheet. A separate coating method that covers the part side and paints the unpainted part. 2. A masking tape having a cutting edge located at a cutting portion at the time of coating is provided on one side, and the masking tape is provided with a curing sheet so as to cover the cutting edge. A masking tape for painting, in which a side edge is fixed, and a masking tape is provided which can be fixed to the other side edge of the curing sheet by turning over this curing sheet and fixing the cutting edge in an exposed state. .