JPH0739812A - Film working method using vinyl chloride coating film material - Google Patents

Abstract

PURPOSE:To extremely simplify a working process, to reduce working cost and to contrive working reliability by film working to cut and join a film material treated with a primer and next, applying a fluororesin coating material on the surface of the film material in a production line. CONSTITUTION:The surface of the film material 1 and 2 coated with a vinyl chloride resin material is treated with a primer in a 1st process to form a primer coating film 3 containing an acrylic polymer. The film material 1 and 2 are joined by hot melting at a joining part 4 formed by laying one on top of another at the cut end part and the coating film 5 of the fluororesin coating material is formed on the primer coating material by coating at job site in the joining part 4. And a coating material, in which polyvinylidene fluoride, a copolymer of vinylidene fluoride and a perfluoropropylene or a copolymer of vinylidene fluoride, tetrafluoroethylene and a perfluoropropylene are blended, is preferably used as the fluororesin coating material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film construction method using a so-called vinyl chloride coating film material, the surface of which is coated with polyvinyl chloride resin. The present invention relates to a film construction method using a vinyl chloride coating film material that can be surely performed in the interval.

[0002]

BACKGROUND OF THE INVENTION Membrane materials are widely used as roofs or awnings in various stadiums and event venues. Standards for this type of membrane material are set according to the intended use. For example, a type of glass substrate coated with vinyl chloride resin (B type) or a type of polyester substrate coated with vinyl chloride resin. (C type) etc. INDUSTRIAL APPLICABILITY The present invention is applied to a film construction method using a film material of the type in which a vinyl chloride resin is coated on the surface.

Membrane materials of the types described above are very susceptible to fouling due to secular change due to migration of the plasticizer, and the fouling is also difficult to remove. However, there are many problems such as increase in absorption of solar heat, which causes breakage of the joint, and improvement is required.

As one of the above-mentioned measures for improvement, it is conceivable to subject the film material to a surface treatment with a fluororesin. For example, a fluororesin film is laminated on the surface of the film material. , The film material becomes too hard and thick, easiness of handling such as bending is sacrificed, and the reliability of bonding (thermal welding) of the film materials to each other is reduced by the laminating process. Since it is necessary to join from it, there is a difficulty in construction, and the wrinkles of the laminate film occur when folded at the time of transportation to the site, dust is invaded here and dirt is generated, which is not preferable from an aesthetic viewpoint, etc. There was a drawback.

It is also conceivable to apply a coating material of a fluororesin on the surface of the film material when it is manufactured. This method is superior to the method of laminating a film in that the workability and the rate of wrinkles are lower, but if the coated film materials are stacked and welded, the long-term reliability of the bonding strength can be secured. There is a problem called difficult. Further, it is not only complicated and complicated to remove the coating material at the joint portion at the time of joining, but also construction management is difficult and reliability of joining is not reliable.

Further, in the production of the film material, it is also possible to apply the paint of the fluororesin on site after the installation work (installation / joining) of the film material is completed without applying the paint of the fluororesin. It is conceivable, but for this work, the base cleaning /
The complicated work of applying the primer and re-applying the fluororesin paint will be performed on site, and there are many steps and the construction cost is high. Furthermore, since both the primer and the fluororesin are transparent in order to secure the light transmittance of the membrane roof, it is difficult to manage the application of forgetting to apply the primer and the application thickness. In particular, there is a problem in that careful management is necessary, especially because forgetting to apply the primer causes a bonding failure.

[0007]

In view of the above, the present invention can greatly simplify the construction process, reduce the construction cost, shorten the construction period, and ensure the construction reliability. The purpose of the present invention is to clarify a film construction method using a film material whose surface is coated with polyvinyl chloride resin.

[0008]

[Means for Solving the Problems] A film construction method using a vinyl chloride coating film material according to the present invention, which solves the above problems, performs a primer treatment on the surface of a vinyl chloride resin coating film material production line, and performs this primer treatment. It is characterized in that a film work for cutting and joining the formed film material is performed, and then a fluorine resin paint is applied to the surface of the film material.

The method of the present invention will be described in more detail below.

First Step: Surface Treatment of Membrane Material (Film Material Manufacturing Factory) In the membrane material manufacturing step, after coating the surface of the membrane material with a vinyl chloride resin, a primer treatment is further applied to the surface. Performing the primer treatment on the film material production line in the factory can apply a uniform and thinner coating film over the entire surface of the film material compared to the conventional method of primer coating on site. Therefore, it becomes possible to perform high-quality primer treatment at low cost.

The material used as the primer is not particularly limited as long as it has good adhesiveness to both vinyl chloride resin and fluororesin. Examples thereof include those containing polymethyl methacrylate as a main component and toluene and methyl ethyl ketone as a solvent, or those in which a copolymer of methyl methacrylate and an acrylic monomer is dissolved in a solvent such as toluene.

Further, there is no particular limitation on the method and apparatus for applying the primer to the surface of the film material.

Second Step: Membrane Construction (Film Processing Factory) The membrane material treated with the primer as described above is treated in the same manner as the untreated membrane material and cut / bonded (heat-welded) to form a membrane panel. Will be completed as.

Third step: Fluorine-based resin treatment (on-site) The above-mentioned membrane panel is transported to the on-site, mounted, and cleaned on the surface of the primer-treated membrane material as a base treatment, and then on the fluorine-based resin. Apply paint.

The method of applying the paint is arbitrary such as gun spraying, roller application, and brush application.

FIG. 1 shows a cross-sectional view of a membrane structure made by the method of the present invention. Reference numerals 1 and 2 are film materials coated with a vinyl chloride resin material,
The surface is subjected to a primer treatment in the process to form a primer coating film 3. The film materials 1 and 2 are joined by heat welding at a joining portion 4 where the ends are overlapped. In addition, in the joint part 4, the primer coating film 3 can be heat-welded without any treatment. Reference numeral 5 is a coating film of the fluororesin paint formed by the application work on site. The fluorine resin coating used in the present invention includes polyvinyl fluoride,
Paint containing polyvinylidene fluoride, polytetrafluoroethylene, polytrifluoromonochloroethylene, perfluoropropylene polymer, fluoroalkoxyethylene polymer or a copolymer thereof, further, the above-mentioned fluorine-containing monomer and fluorine Monomers that do not contain (for example, vinyl-based monomers such as ethylene, propylene, vinyl chloride)
And a fluororesin coating material containing a copolymer such as methyl (meth) acrylate, propylmethacrylate, n-butyl (meth) acrylate, and 2-ethylhexyl (meth) acrylate. Acrylic polymer, etc. consisting of a polymer or a copolymer is 0 to 6
It may contain 0% by weight, preferably 10 to 50% by weight. Fluorine resin coating material particularly preferably used in the present invention, polyvinylidene fluoride, or a copolymer of vinylidene fluoride and perfluoropropylene or vinylidene fluoride,
It is a paint that contains a copolymer of tetrafluoroethylene and perfluoropyrene.

The above acrylic polymer is included in the primer coating used in the present invention.

[0018]

According to the method of the present invention, the following effects can be expected in a membrane structure using a membrane material coated with a vinyl chloride resin material.

Compared with the conventional film construction method using a film material laminated with a fluorine-based resin film, wrinkles do not occur on the surface of the film material, which is aesthetically pleasing and stains do not adhere to the wrinkle surroundings. The rate is less likely to decrease, and there is an advantage that the possibility of film material breakage due to absorption of solar heat due to dirt is reduced.

Since it is possible to prevent the plasticizer from flowing out of the vinyl chloride resin, it is possible to prevent the inflow of dirt components into the vinyl chloride resin, the strength of the film material is maintained and the durability is improved, and the re-pitching interval of the film material is long. Therefore, the maintenance cost can be reduced.

Compared with the conventional construction method in which the process from the primer treatment to the application of the fluororesin paint is carried out on site, since the primer treatment is carried out using the film material production line in the factory, the entire surface of the film material is more evenly distributed. Since the primer can be applied in the state of a thin coating film, high-quality primer treatment can be performed at low cost.

Since the membrane material subjected to the primer treatment in the factory can be treated and cut (bonded by heat welding) in the same manner as the untreated membrane material, the on-site work is not restricted by the primer treatment. There are advantages. In addition, compared to performing on-site primer treatment, reduction of construction cost,
It is extremely effective in shortening the construction period.

Further, in a construction method in which a film material laminated with a fluororesin film or a film material coated with a fluororesin paint is joined to form a film panel, peeling of the laminated film or removal of the paint is required. If it is insufficient, the joining of the film materials is apt to occur, but the fracture of the joining portion is easy to occur,
According to the method of the present invention, the joining of the film materials is performed between the film materials subjected to only the primer treatment, so that there is an advantage that a stable bonding strength can be obtained for a long term.

In the conventional construction method in which the primer treatment and the application of the fluororesin coating material are carried out on site, since the primer and the coating material are both transparent materials, they may be confused or left uncoated. Although the construction management is complicated, the construction method of the present invention has an advantage that the construction management is very easy because the fluororesin paint is only applied on site.

Further, according to the construction method of the present invention, since the steps at the site are only the cleaning of the surface of the film material and the application of the fluororesin paint, the work steps which are affected by the weather as compared with the conventional construction method. There is an advantage that the process management is reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a film structure to which the present invention is applied.

[Explanation of symbols]

 1-Membrane material 2-Membrane material 3-Primer coating film 4-Joint part 5-Fluorine resin coating film

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kotaro Tanaka 10-13 Fuyuki, Koto-ku, Tokyo Ogawa Tent Co., Ltd. (72) Inventor Yasuo Hara 2-11-24 Tsukiji, Chuo-ku, Tokyo Japan Synthetic Rubber Within the corporation

Claims (1)

[Claims] 1. A vinyl chloride resin coating film material production line is subjected to a primer treatment on its surface, and a film construction for cutting and joining the primer-treated film material is carried out,
Next, a film construction method using a vinyl chloride coating film material, characterized in that a fluororesin paint is applied to the surface of the film material.