JPH073228A - Tape having waterproof film coated and method for coat aging using the same - Google Patents

Abstract

PURPOSE:To obtain the subject tape of high operability in coating of the outer walls of buildings, comprising the adhesive layer, the base material layer, the waterproof coating layer and the release paper layer in turn from the substrate with a prescribed adhesion, thus enabling only the release paper to be readily peeled off with a weak force. CONSTITUTION:The subject tape has the adhesive layer 11, the base material layer 12, the waterproof coating layer 14 having almost smooth surface 13 and the release paper layer 14 in turn from the substrate. The adhesion between the waterproof coating layer 13 and the release paper layer 14 is weaker than any of those between the substrate and the adhesive layer 11, between the adhesive layer 11 and the base material layer 12, and between the base material layer 12 and the waterproof coating layer 13 so that only the release paper layer 14 can be peeled off with a weak force. The tape 1 is preferably used to age the three-dimensional coating pattern on the outer walls of house buildings.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape having a masking function which is used when coating an outer wall of a building and the like.
The present invention relates to a coating curing method using a mold.

[0002]

2. Description of the Related Art There is a method of forming an uneven pattern on a building outer wall or the like by coating for improving the design, for example, a method generally called a multi-layer pattern spray coating.

On the other hand, there is a building called a unit building in which a building unit having a transportable size is manufactured in advance in a factory, and a plurality of the building units are transported to a construction site, assembled and joined into one building. One of the main advantages of this unit building is that the factory production rate is high and the on-site construction period can be shortened, and it is common to complete the painting of the outer walls at the factory.

[0004] When the uneven pattern spray coating is adopted in a unit building, it may be necessary to leave a smooth painted surface on the part without the uneven pattern because of the waterproof treatment of the on-site joint. This is because the waterproof seal material does not fit well on the uneven pattern portion. A masking tape is used to perform the spraying of the uneven pattern while leaving a partially smooth coating surface, and a coating curing method including the following process steps has been conventionally performed. (See Figure 4)

In the first step, the surface to be coated is undercoated and dried. As the second step, smooth coating is performed and drying is performed. As a third step, a masking tape is attached to the portion to be left as a smooth surface. As the fourth step, the uneven pattern is painted and dried. As a fifth step, the masking tape attached in the third step is peeled off and removed. That is, the part where the masking tape is peeled off exposes the smooth coated surface coated in the second step and remains as a smooth surface.

The masking tape used here is, for example, JP-B-62-45901 "Adhesive tape for coating".
As shown in "", it has a simple structure including an adhesive layer and a base material layer when viewed from the adherend side.

[0007]

However, the conventional coating curing method using the masking tape having such a simple structure has the following problems. That is, if the drying of the base to which the masking tape is applied, in this case, the drying of the smooth coating in the second step is insufficient, the adhesion and cohesive force of the coating film of the smooth coating will not be sufficiently expressed, and When the masking tape is peeled off in the fifth step, it is peeled off together with the masking tape in a state where the coating film of smooth coating adheres to the masking tape side. As a result, the waterproofness of the outer wall and the like is remarkably lowered, and the outer wall and the like have a serious problem in terms of quality such that water is absorbed and causes corrosion and freeze damage.

In order to deal with this problem, it is ideal that the drying in the second step is carried out sufficiently over a long period of time, but it is not realistic considering the demand for the production amount and the restrictions on the equipment.
As described above, it has been difficult in the conventional technique to achieve both coating productivity and quality.

The present invention has been made in view of the above problems, and an object thereof is to prevent the above-mentioned quality problems from occurring even if the coating film is not sufficiently dried in the coating process. A taper with a masking function for spraying uneven patterns while partially leaving a smooth surface.
And a coating curing method using this tape to achieve both coating productivity and quality.

[0010]

In order to achieve the above object, the tape with a waterproof coating according to claim 1 has a pressure-sensitive adhesive layer, a base material layer, and a substantially smooth surface when viewed from the adherend side. It consists of a waterproof coating layer and a release paper layer, and the adhesive force between the waterproof coating layer and the release paper layer is the adhesive force between the adherend and the adhesive layer, and the adhesive force between the adhesive layer and the base material layer. The adhesive strength between the base material layer and the waterproof coating layer is smaller than that of the base material layer, and only the release paper layer can be peeled off with a slight force.

Further, the coating curing method according to claim 2 comprises: a step of undercoating, a step of smooth coating, a step of applying the tape with the waterproof coating film of claim 1 to a specific portion, a step of coating uneven patterns, It is characterized in that it comprises a step of peeling and removing only the release paper layer of the tape with the waterproof coating attached.

The pressure-sensitive adhesive layer of this tape is mainly composed of a material selected from an acrylic resin, a polyolefin resin, a vinyl acetate resin, a rubber having a double bond, a tackifier, etc., or a mixture thereof. And its thickness is 20 ~
40μ is suitable. The base material layer of this tape is made of a synthetic resin film such as polypropylene or polyethylene, a woven fabric, a non-woven fabric or the like, and its thickness is preferably 40 to 80 μm.

The coating material for the waterproof coating layer of this tape is selected from acrylic coating material, urethane coating material, silicone coating material and the like, and its thickness is preferably 100 to 300 .mu.m.

The release paper layer of this tape is made of foreign paper, Japanese paper, synthetic resin film, etc., and its thickness is preferably 20-40 .mu.m. The release paper layer and the waterproof coating layer are attached by the slight adhesive force which the surface of the waterproof coating layer itself has, and are not peeled off naturally, but can be easily peeled off. Further, an adhesive layer may be added or surface treatment of the release paper layer may be performed in order to appropriately adjust the adhesive force between the two layers.

The width of this tape may be determined according to its use, that is, the width of the portion left as a smooth surface.

The coating curing method according to the second aspect comprises the following steps. (Refer to FIG. 2) As a first step, the surface to be coated is undercoated and dried. As a second step, the tape with the waterproof coating film according to claim 1 is attached to a portion to be left as a smooth surface. As the third step, smooth coating is applied and drying is performed. As the fourth step, the uneven pattern is painted and dried. As the fifth step, only the release paper layer of the tape with the waterproof coating applied in the second step is peeled and removed. The smooth surface of the waterproof coating layer is exposed and remains as a smooth surface in the portion of the tape with the waterproof coating layer from which the release paper layer has been peeled off.

[0017]

The release paper layer of the tape with the waterproof coating film is peeled off and removed with a slight force, and the waterproof coating film layer, the base material layer and the adhesive layer are left as they are on the coated surface such as the outer wall. Therefore, even if the undercoat of the tape, that is, the undercoating coating is not sufficiently dried, the undercoating coating film is not peeled off when the release paper layer is removed, and the tape is used as a waterproof coating film layer. At the same time, the waterproofness of the outer wall etc. is completely ensured.

[0018]

Embodiments of the present invention will now be described with reference to the drawings.
explain. FIG. 1 is a sectional view showing the structure of a tape with a waterproof coating film according to claim 1. 1 is a tape with a waterproof coating, 11 is an adhesive layer, 12 is a base material layer, 13 is a waterproof coating layer, and 14 is a release paper layer. Details of each of the constituent elements 11 to 14 are shown in Table 1 as Examples 1 to 3. Any of Examples 1 to 3 can achieve the object of the present invention.

[Table 1]

FIG. 2 is a schematic view showing a process procedure of the coating curing method according to the second aspect. (A) is the first step, the outer wall 2
Apply undercoat 3 to the above and dry. (B) is a second step in which the tape 1 with a waterproof coating is attached to the portion to be left as a smooth surface. (C) is a third step in which smooth coating 4 is applied and drying is performed. (D) is a fourth step, in which uneven pattern coating 5 is applied and drying is performed. (E) is a fifth step in which the release paper layer 14 of the tape with a waterproof coating is peeled off and removed. Through the above steps, only the part where the release paper layer 14 is peeled off is the waterproof coating layer 1
The surface of No. 3 is exposed and becomes a smooth surface, and an outer wall having an uneven pattern is obtained at other portions. In FIG. 2, the adhesive layer and the base material layer of the tape with a waterproof coating film are omitted.

FIG. 3 shows a conventional masking tape.
FIG. 3 is a cross-sectional view showing the structure of the cup. 6 is a masking tape, 61 is an adhesive layer, and 62 is a base material layer.

FIG. 4 is a schematic diagram showing a process procedure of a conventional coating curing method. In the first step (A), the undercoat 3 is applied to the outer wall 2 and dried. In the second step (B), smooth coating 4 is applied and drying is performed. (C) is the third step,
A masking tape 6 is attached to the portion to be left as a smooth surface. (D) is a fourth step, in which uneven pattern coating 5 is applied and drying is performed. (E) is a fifth step in which the masking tape 6 is peeled off and removed. In FIG. 4, the adhesive layer of the masking tape is omitted.

[0022]

As described in detail above, according to the tape with a waterproof coating film of the present invention and the coating curing method using this tape, the coating film is not sufficiently dried in the coating step. Also, it is possible to carry out the spraying with the uneven pattern while leaving the smooth surface partially without causing the above-mentioned quality problem. Therefore, it is a very effective technique for achieving both coating productivity and quality, which can meet the demand for production volume and equipment restrictions.

[Brief description of drawings]

FIG. 1 is a sectional view showing the structure of a tape with a waterproof coating film according to claim 1.

FIG. 2 is a schematic diagram showing a process procedure of the coating curing method according to claim 2.

FIG. 3 is a sectional view showing the structure of a masking tape which has been conventionally used.

FIG. 4 is a schematic view showing a process procedure of a conventional coating curing method.

[Explanation of symbols]

 1 Tape with waterproof coating 11 Adhesive layer 12 Base material layer 13 Waterproof coating layer 14 Release paper layer 2 Outer wall 3 Undercoat coating 4 Smooth coating 5 Uneven pattern coating 6 Masking tape (conventional product) 61 Adhesive layer 62 base material layer

Claims (2)

[Claims] 1. An adhesive layer, a base material layer, as viewed from the adherend side,
The waterproof coating layer and the release paper layer have a substantially smooth surface, and the adhesive strength between the waterproof coating layer and the release paper layer is the adhesive strength between the adherend and the adhesive layer, the adhesive layer and the base material layer. A tape with a waterproof coating, which is smaller than the adhesive strength between the base material layer and the waterproof coating layer and is capable of peeling only the release paper layer with a slight force.
Pu. 2. A method of spraying an uneven pattern on an outer wall of a building or the like, a step of undercoating, a step of smooth coating, a step of attaching a tape with a waterproof coating film according to claim 1 to a specific portion,
A coating curing method comprising a step of coating an uneven pattern and a step of peeling and removing only the release paper layer of the tape with the waterproof coating attached.