JP2000202811A - Method for protecting surface of building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for protecting the surface of a building material in place of a coating film which allows the pattern/unevenness of the building material to stand out in relief or to pass through and protects the surface from inundation, stains, and damage. SOLUTION: A film of uniform thickness of a transparent plastic film 1 is formed in place of a coating film by a method in which the film 1 is pressed to a part to be protected in the surface of a base material 2 through a quick drying adhesive so that the shape, color, and pattern of the base material is expressed in the appearance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The original shape and color pattern of the base material appear on the appearance as it is,
Further, the present invention relates to a method for protecting the surface of a building material in which a plastic film is pressed in place of a coating film in order to protect the surface from flooding, dirt and damage.

[0002]

2. Description of the Related Art Conventionally, various coatings have been applied to building materials, particularly wooden materials, in order to ensure that the original shape and color pattern of the base material appear as they are and to protect the base material. As a means of painting, spray of liquid paint (spray)
Brush coating, dipping, roll coating, curtain flow coating and the like are known. Others may polymerize paint powder deposited on the surface.

[0003]

However, the conventional coating has the following problems. (A) The yield of paint is low. For example, most of the sprayed paint is scattered uselessly, and only 10 to 20% of the sprayed paint adheres to the workpiece. The yield is much better than that of roll coating, but when used cyclically, at least 10 to 2 at a time
It is necessary to prepare about 0 kg of paint, and the surplus cannot be used next time, and is wasted.

(A) The process is long, and it takes time to dry and harden the paint. The UV-curable paint, which is said to be short, may be 1 to 2 minutes in combination with the setting. However, in general, in the case of applying twice, undercoating / overcoating and accompanying sanding / drying twice before and after are required, and the process is long. For example, it takes 20 to 30 minutes for drying and curing of urethane which is usually used, so that garbage may adhere in an uncured state, or if a large amount is applied, sagging may occur and the appearance may be impaired. is there.

(C) It is difficult to ensure the uniformity of the coating thickness. Since the coating drips or flows, it is difficult to make the coating film thickness uniform even on a flat surface. Also,
It is difficult to make the thickness of the coating film 5 uniform even for edges, corners, and irregularities (grooves, irregularities, etc. 2a in FIG. 3). In addition, even in the case of roll coating in which the uniformity of the coating film thickness is relatively easy, when the substrate 2 is made of wood, the paint is sucked into a number of small holes such as conduits, and craters (abata-like irregularities) may be generated. , Uneven gloss and unevenness. In order to prevent this, it is necessary to apply a “sealer” having a good concealing effect in a separate step, fill the small holes, or apply another layer as described above.

(D) Pollution and deterioration of the working environment. The spray method scatters both paint and solvent and pollutes the work environment.
In other methods, the volatile solvent has a strong odor and is harmful to the human body, and there is a risk of ignition, fire and explosion.
Dryers for UV-curable coatings can generate harmful ozone and can damage your eyes and require protective measures. In addition, even when washing and removing the paint adhered to the appliance, the worker inhales the solvent more than at the time of painting, which is a health problem.

(E) It is difficult to store the paint. Paint is
It needs to be sealed and stored in a cool and dark place because it is degraded by air, light and heat. Also, once the curing agent is blended,
Because it cures rapidly, it must be used as soon as possible, and the rest cannot be used later. In roll coating and curtain flow coating in a factory, paint is used in circulation. At this time, paint residue or dust in the air remaining in the route may be mixed to deteriorate the quality of the paint.

On the other hand, a method of laminating a decorative sheet, such as a reinforced paper or a PVC sheet, on which a grain of wood or the like has been printed in advance by painting, on a base material via an adhesive has also been actively performed. This is a combination of a decorative material and a paint, and has a feature that the above-mentioned problem of the painting is largely solved in that the painting work on site is omitted.

However, in many cases, only the smooth surface is laminated, and at the end, the decorative sheet is easily peeled off, the object is caught, the decorative sheet is peeled off due to a difference in thermal expansion or the like, and if the base material is made of wood, the end surface is cut off. However, there are various problems such as the inundation of water and the printed pattern is different from natural wood grain and the like, giving a sense of incongruity.

It is an object of the present invention to solve the above-mentioned disadvantages of the prior art. However, the original shape and color of the base material, such as the unevenness of the base material being embossed as it is and the color and pattern being transmitted therethrough. In order to protect the surface from inundation, dirt and damage while the pattern appears on the appearance as it is,
An object of the present invention is to provide a method for protecting a surface of a building material in which a transparent plastic film is pressed in place of a transparent coating film.

[0011]

In order to achieve the above object, a method for protecting a surface of a building material according to the first aspect of the present invention is a method for protecting a surface of a base material (2) which needs to be protected by a quick drying adhesive. A transparent plastic film (1) is pressure-bonded to form a film having a substantially uniform thickness so that the original shape, color, and pattern of the substrate (2) can be expressed as they are through the agent. It is.

The term "transparent" includes not only colorless and transparent but also partially transparent ones such as colored ones and translucent ones.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the quick-drying adhesive is a solventless quick-drying adhesive or a hot melt adhesive.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the base material is a floor plate (3).

[0015] The symbols in parentheses described in the means for solving the above problems correspond to the symbols described in the drawings and the embodiments of the invention described later.

According to the first aspect of the present invention, various problems associated with the conventional application of a protective coating are solved as described below. That is, there is almost no waste of the plastic film, the yield is so high that it is not necessary to compare it with that of the paint, there is almost no risk of contamination of the working environment due to the scattering of the paint, and no solvent is used, Or, it is contained in a slight amount in the adhesive, and its use amount is remarkably small as compared with that of the paint, so that it is excellent in safety.

It consists only of operations such as sanding of a substrate to increase the adhesiveness of the adhesive, bonding of a plastic film, and pressure bonding (including cooling). The required time is several minutes or less, and the process is significantly shortened. . Even when the base material is wood, there are no craters (abata-like irregularities), uneven gloss, or unevenness due to a large number of small holes such as conduits. Operations such as repainting are omitted.

The plastic film is transparent, has a uniform thickness over the entire surface, and if pressed by a roll or a spatula, the unevenness of the base material is substantially embossed as it is, and its color and pattern are transparent. The original shape and color of the substrate
The pattern appears as it is, and without dripping like paint, and as described above, craters, uneven gloss and variations do not occur,
The appearance is significantly better than the conventional example. In addition, even if the remaining plastic film is exposed to the air, it will not deteriorate over a long period of time unless it is at a high temperature, and it can be stored for a long time regardless of the special storage method. Reusable. Incidentally, the plastic film is tougher than the paint film, and the function of protecting the surface of the building material is superior to the paint film.

Furthermore, if a plastic film is formed so as to surround not only the exposed surface of the substrate but also the substrate,
Unlike a conventional decorative sheet, an effect is obtained such that an object is not caught or peeled off from an end portion due to a difference in thermal expansion or the like, and water infiltration is prevented.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, since the quick-drying adhesive is a solventless quick-drying adhesive or a hot melt adhesive, it is harmful or dangerous. There is no or almost no volatile solvent, and there is no risk of contamination of the working environment and fire by the solvent. Also, the sticking operation is completed within one minute, during which time the appearance is impaired.
There is no adhesion of dust or sagging like paint.

Further, according to the invention of claim 3, according to claim 1,
In addition to the effect of the invention of the second aspect, when the base material is a flooring material, the end face is covered with the integral plastic film, including the unevenness, so that the plastic film does not peel off from the end face and spilled. Water does not reach the substrate, and deterioration of the substrate is prevented.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments relating to a method for protecting a surface of a building material according to the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing one applied to wood having a wood grain pattern, irregularities, and the like, and FIG. 2 is a cross-sectional view showing one applied to flooring.

As the transparent (including colored or partially transparent) plastic film 1 to be pressed, a plastic film formed into a uniform thickness of 0.02 to 2 mm by an extruder or the like is used. When a two-layer plastic film is required, it is manufactured by bonding two separately extruded films in advance. Prior to use, the plastic film 1 is cut according to the shape of the surface of the substrate 2 to be attached.

Prior to the pressing of the plastic film 1 onto the surface of the substrate 2, a solvent-free quick-drying adhesive (eg, a solvent-free quick-drying adhesive such as a polyurethane adhesive or a hot-melt adhesive) is applied with a brush or a roller. ) Is applied (application amount: 100 to 180 g / m ² ). Its thickness is negligible compared to that of plastic film 1,
There is no sagging at all. Note that the adhesive may be applied to the side of the substrate 2.

Next, the surface of the plastic film 1 on the adhesive side is superimposed on the surface of the base material 2 and pressed by a roll or a spatula of 40 to 120 degrees so as to follow the unevenness of the surface. As a result, the surface of the base material 2 having the irregularities is covered with the film of the plastic film 1 in which the irregularities are substantially engraved as they are and the pattern is transmitted almost as it is. Therefore, there is almost no waste of the plastic film 1, the yield is so high that it is not necessary to compare it with that of the paint, there is almost no risk of contamination of the working environment due to the splash of the paint, and the adhesive contains no solvent at all. As a result, there is no risk of contamination of the working environment and fire by solvents, and no protective equipment is required. Also, the sticking operation is completed within one minute, and during that time, there is no dirt attached or dripping such as paint which impairs the appearance. Moreover, since there is no contamination of the equipment used for the construction, it is easy to clean up and safe.

The operation consists only of operations such as sanding of a substrate to increase the adhesiveness of the adhesive, bonding of a plastic film, and pressure bonding (including cooling). The required time is several minutes or less, and the process is remarkable. Be shortened. Even when the base material is wood, there are no craters (abata-like irregularities), uneven gloss, or unevenness due to a large number of small holes such as conduits. Operations such as repainting are omitted.

The thickness of the plastic film 1 is uniform over the entire surface.
The original shape and pattern of the base material 2 appear almost as they are, such as the grooves, unevenness 2a, etc. of the base material 2 are exposed as it is, and the pattern is transmitted, so that the texture, naturalness, etc. of the woody material and the natural taste of the wood material are kept almost as it is Is done. Moreover, there is no sagging such as paint, and no crater, unevenness of gloss, and unevenness as described above, and therefore, the appearance is remarkably superior to the conventional example.

Furthermore, even if the remaining plastic film is exposed to air, if it is not at a high temperature, it does not deteriorate for a long time unless it is at a high temperature, and can be stored for a long time regardless of a special storage method. It can be reused for other uses. Incidentally, the plastic film is tougher than the paint film, and the function of protecting the surface of the building material is superior to the paint film.

Furthermore, if the film of the plastic film 1 is formed not only on the exposed surface of the base material 2 but also around the exposed surface, the object may be caught or caught like a conventional decorative sheet.
Due to the difference in thermal expansion and the like, it does not peel off from the end portion, and also has the effect of preventing water from infiltrating.

Next, the case where the base material is the floor plate 3 will be described. The floor plate 3 is stretched on a joist via a base material such as plywood (all not shown), and is fixed with nails, hardware and adhesive. Can be fastened. Moreover, on each end face of the adjacent floor plate, a convex real 3a and a concave real 3b that fit together are provided so that the vertical movement of the floor plate 3 is restricted.

In order to prevent the spilled water from penetrating into the inside of the floorboard 3 through the gaps and end faces between the floorboards 3, the plastic film is formed so that at least the top and end faces of the floorboard 3 are wrapped. 1 is crimped. The method and the operation and effect are substantially the same as those described above, and will not be described. In order to improve wear resistance, it is more preferable to use a plastic film to which a wear reducing agent containing silicon carbide as a main component is added.

[0032]

As described above, according to the first aspect of the present invention,
There is almost no waste of the plastic film, the yield is so high that it is not necessary to compare it with that of the paint, and there is almost no risk of contamination of the working environment due to the splash of the paint. Moreover, no solvent is used, or the solvent is contained in a very small amount in the adhesive. The time required for construction is less than a few minutes, and the process is significantly shortened.
Even when the base material is wood, craters, uneven gloss, and unevenness due to a large number of small holes such as conduits do not occur. Is omitted.

Also, the original shape and color / pattern of the base material appear as they are, such as the grooves, irregularities, etc., of the base material are almost as they are, and the color / pattern is transmitted. No crater, gloss unevenness or variation occurs, and the appearance is remarkably superior to that of the conventional example.
Moreover, the plastic film does not deteriorate for a long period of time unless it is at a high temperature, and can be stored for a long period of time, regardless of a particular storage method, and can be reused for another use. Incidentally, the plastic film is tougher than the paint film, and the function of protecting the surface of the building material is superior to the paint film.

Furthermore, if a plastic film is formed so as to cover not only the exposed surface of the substrate but also the substrate,
Unlike a conventional decorative sheet, an effect is obtained such that an object is not caught or peeled off from an end portion due to a difference in thermal expansion or the like, and water infiltration is prevented.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, there is no harmful or dangerous volatile solvent,
It is almost not contained, and there is no danger of contamination of the working environment and fire by the solvent. Also, the pasting work is completed within one minute,
In the meantime, there is no adhesion of dirt or dripping such as paint that impairs the appearance.

According to the invention of claim 3, claim 1 or 2
In addition to the effects of the invention, the floorboard is covered with an integral plastic film, including the uneven surface, so that the plastic film does not peel off from the end face and spilled water does not reach the base material Thus, deterioration of the base material is prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention applied to wood having a grain pattern, irregularities, and the like.

FIG. 2 is a sectional view showing another embodiment of the present invention applied to a floor panel.

FIG. 3 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plastic film 2 Building material 2a Groove, unevenness, etc. 3 Floorboard 3a Convex 3b Concave 5 Coating

Claims (3)

[Claims] 1. A transparent plastic film is pressure-bonded to a portion of the surface of a base material requiring protection via a quick-drying adhesive so that the original shape and color / pattern of the base material can be shown as they are in the appearance. A method of protecting a surface of a building material, wherein a film having a substantially uniform thickness is formed. 2. The method according to claim 1, wherein the quick-drying adhesive is a solvent-free quick-drying adhesive or a hot melt adhesive. 3. The method for protecting a surface of a building material according to claim 1, wherein the base material is a floor plate.