JPH0671674U - Eaves gutter - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an eaves gutter that is less contaminated by rainwater and has no thermal deformation or expansion / contraction. [Structure] The reinforcing core material 1 is coated with hard vinyl chloride resins 2 and 3, and a vinylidene fluoride layer 5 is provided on the outer hard vinyl chloride resin layer 3 via a polymethylmethacrylate layer 4.
Are formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an eaves gutter in which a hard vinyl chloride resin is coated on a reinforcing core material having excellent stain resistance.

[0002]

[Prior art]

 The vinyl chloride resin eaves trough has a problem that it is easily softened and deformed by solar heat because of its low softening temperature, and that the eaves gutter expands and contracts as the temperature changes due to its large linear expansion coefficient due to heat.

As a solution to the deformation and expansion / contraction of eaves gutter due to this heat, an eaves gutter formed by coating the outer surface of a core material formed of a metal plate or the like with a vinyl chloride resin layer is known. For example, an eaves trough in which an intermediate resin layer of vinyl chloride resin mixed with a large amount of filler is adhered over the entire outer surface of a core made of a metal plate and the outer surface of the intermediate resin layer is covered with a vinyl chloride resin layer is used. It has been proposed (Japanese Patent Publication No. 2-498).

On the other hand, since the eaves gutter is used by being attached to the eaves of a building, recently, the resident's interest in the appearance of the building has become stronger, and the eaves gutter is not contaminated by rainwater or the like. Are being demanded.

[0005]

[Problems to be solved by the device]

 The eaves trough solves the problems of heat deformation and thermal expansion and contraction of vinyl chloride resin eaves troughs, but since the outer surface is still a vinyl chloride resin layer, the pollution state due to rainwater etc. It was not the same as the system resin eaves gutter.

The present invention has been made in view of the above points, and an object thereof is to provide an eaves gutter which is less contaminated by rainwater or the like and which is not thermally deformed or expanded or contracted.

[0007]

[Means for Solving the Problems]

 In the eaves trough of the present invention, examples of the reinforcing core material include a metal plate such as a steel plate and an aluminum plate, a fibrous reinforcing material such as glass fiber, carbon fiber, and Kepler fiber. As long as it can be used as a material, its material and shape are not particularly limited.

The acrylic resin used for the acrylic resin layer includes polyacrylic acid, polymethacrylic acid, esters such as polymethyl acrylate and polymethyl methacrylate, copolymers with vinyl acetate, and the like. Alternatively, modified products thereof and the like can be mentioned. The thickness of the acrylic resin layer is not particularly limited, but if it is less than 0.005 mm, the adhesive effect is not sufficient, and if it exceeds 0.1 mm, peeling due to cohesive failure occurs in the acrylic resin layer. Since it becomes easy, it is preferable to set it to about 0.005 to 0.1 mm.

Further, in the eaves trough according to claim 2, the acrylic resin layer is formed on the hard vinyl chloride resin through the soft vinyl chloride resin layer, but the amount of the plasticizer is relatively large. It is formed of a vinyl chloride resin composition blended in an amount. This soft vinyl chloride resin layer has the function of further improving the adhesion between the acrylic resin and the hard vinyl chloride resin as a functionally graded layer, and protecting the hard vinyl chloride resin from ultraviolet rays. Although the thickness is not particularly limited, it is usually set to the same level as the thickness of the acrylic resin layer.

The fluororesin used for the outermost fluororesin layer is polytetrafluoroethylene, perfluoroalkoxy fluororesin, polytetrafluoroethylene hexafluoropropylene copolymer, ethylene tetrafluoroethylene. Examples thereof include copolymers, vinylidene fluoride resins, polychlorofluoroethylene, vinyl fluoride resins and the like. In particular, vinylidene fluoride resin having a good balance of mechanical strength, weather resistance, stain resistance, and workability is preferably used.

The thickness of the fluororesin layer is not particularly limited, but if it is less than 0.01 mm, the layer becomes thin and the strength becomes weak, and conversely if it exceeds 0.1 mm, it becomes expensive. It is preferably about 0.01 to 0.1 mm.

The fluororesin layer may be formed on the entire outer surface of the vinyl chloride resin layer of the eaves trough in which the reinforcing core material is coated with the hard vinyl chloride resin, but when it is attached to the eaves of a building. It may be formed only in a portion visible to a person. For example, if the surface of the eaves gutter where the rainwater flows is the inner surface, the fluororesin layer is formed on the outer surface on the opposite side.

As a method for forming the fluororesin layer, the acrylic resin layer, and the soft vinyl chloride resin layer, for example, a melt laminating method, a film laminating method or the like is preferably adopted. Examples of the melt-lamination method include a coextrusion molding method, a pultrusion molding method, and an injection molding method. Examples of the film laminating method include a pressure bonding method and a heating roll laminating method.

Further, a composite film in which a fluororesin layer and an acrylic resin layer are laminated, or a composite film in which a fluororesin layer, an acrylic resin layer and a soft vinyl chloride resin layer are laminated, is formed on a hard vinyl chloride resin. You may laminate. The eaves trough, which consists of a reinforced core material coated with a hard vinyl chloride resin, is manufactured as usual.

The eaves gutter of the present invention will be further described with reference to the drawings. 1 and 2 show an example of eaves gutter according to claim 1, wherein 1 is a reinforcing core material made of a metal plate and is formed into an eaves gutter shape, and hard vinyl chloride resin The fat layers 2 and 3 are covered to form the eaves gutter body. A polymethylmethacrylate layer 4 and a vinylidene fluoride resin layer 5 are formed in this order on a hard vinyl chloride resin layer 3 on the outer side opposite to the inner hard vinyl chloride resin layer 2 through which rainwater flows in the eaves gutter body. It is said to be an eaves gutter.

3 and 3 show an example of an eaves gutter according to claim 2, wherein a soft vinyl chloride resin layer 6 is provided between the hard vinyl chloride resin layer 3a and the polymethylmethacrylate layer 4a. Other than that, it has the same structure as the eaves gutter shown in FIGS. 1 and 2. 1a is a reinforcing core made of a metal plate, 2a is a hard vinyl chloride resin layer, and 5a is a vinylidene fluoride resin layer.

[0017]

[Action]

 In the eaves trough according to the first aspect, since the fluororesin layer on the outer surface has excellent surface smoothness and slipperiness, it is unlikely to become dirty and is less contaminated by rainwater or the like. The fluororesin layer is firmly bonded and integrated with the hard vinyl chloride resin layer by the acrylic resin layer.

The eaves gutter of claim 2 is similar to the eaves gutter described above in that it is unlikely to become dirty and is less contaminated by rainwater, and the fluororesin layer is hard due to the acrylic resin layer and the soft vinyl chloride resin layer. It is further firmly bonded and integrated with the vinyl chloride resin layer.

[0019]

【Example】

 An embodiment of this invention will be described below.

(Examples 1 to 4 and Comparative Examples 1 to 6) The core material as shown in Table 1 was formed into an eaves trough shape, and this was subjected to extrusion molding using a modified coating die to obtain polyvinyl chloride (polymerization). About 1050) to form a hard vinyl chloride resin layer and then cooled to obtain a eaves gutter body.

Then, as shown in Table 1, on the hard vinyl chloride resin layer (the hard vinyl chloride resin layers 3 and 3a in FIGS. 1 and 3) on the outer surface side of the eaves gutter body, as shown in Table 1, (And a soft vinyl chloride resin layer) and a fluororesin layer were formed to obtain an eaves gutter as shown in FIG. 1 or 3. The eaves gutter was cut into a length of 1 m to obtain a test piece. In Comparative Examples, as shown in Table 1, when the reinforcing core material is not used, the allyl resin layer (and the soft vinyl chloride resin layer) and the fluororesin layer may not be formed.

Regarding the reinforcing core material shown in Table 1, the glass fiber reinforcing core material is a plate-shaped body (thickness 0.5 mm, glass content 30% by weight) made of glass roving and vinyl chloride-vinyl acetate copolymer resin. ) Was used as the steel sheet, and a chromate-treated galvanized steel sheet (thickness: 0.2 mm) having a width of 20 mm and a thickness of 0.2 mm was used.

Regarding the soft vinyl chloride resin layer, the allyl resin layer, and the fluororesin layer shown in Table 1, a composite film obtained by laminating these resin layers is laminated on a hard vinyl chloride resin by a laminating roll. Formed.

That is, in the case of comprising an allyl resin layer and a fluororesin layer, a two-layer composite film of polymethylmethacrylate and vinylidene fluoride resin (KFC AT-500Y, manufactured by Kureha Chemical Industry Co., Ltd., thickness 50 μ) is used. used. When it is composed of a soft vinyl chloride resin layer, an allyl resin layer and a fluororesin layer, it is a three-layer composite film of soft vinyl chloride resin, polymethylmethacrylate and vinylidene fluoride resin (KFC film, Kureha Chemical Industry Co., Ltd. Manufactured, thickness 50 μ) was used. The fluororesin layers of Comparative Examples 4 and 6 were formed by laminating vinylidene fluoride resin films (KYNAR740, manufactured by Mitsubishi Petrochemical Co., Ltd., thickness 50 μ) with a laminating roll.

The obtained test piece was allowed to stand outdoors for 3 months in summer (July 1st to September 30th) with the opening downward, and the gloss (%) and color difference (ΔE ), The diameter expansion ratio (enlargement ratio% of the opening width), and the maximum expansion / contraction amount (extension amount mm in the length direction of the test piece) were measured. The results are shown in Table 1.

[0026]

[Table 1]

[0027]

[Effect of device]

 In the eaves trough according to claim 1, as described above, the fluororesin layer improves the stain resistance, and the reinforcing core material reduces the thermal deformation / thermal expansion / contraction, so that the deformation / dirt can be prevented over a long period of time. No eaves gutter provided. In addition, in the eaves trough according to the second aspect, the above-described effect is exhibited, and the fluororesin layer is more firmly adhered to the eaves gutter body, and is difficult to peel off.

[Brief description of drawings]

FIG. 1 is a front sectional view of an embodiment of an eaves gutter of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a front sectional view of an eaves gutter according to another embodiment.

FIG. 4 is a partially enlarged view of FIG.

[Explanation of symbols]

1, 1a Reinforcement core material 2, 2a, 3, 3a Hard vinyl chloride resin 4, 4a Acrylic resin layer (polymethylmethacrylate layer) 5, 5a Fluororesin layer (vinylidene fluoride resin) 6 Soft vinyl chloride resin layer

Claims (2)

[Scope of utility model registration request] 1. An eaves trough comprising a reinforcing core material coated with a hard vinyl chloride resin, wherein a fluororesin layer is formed on the outer surface of the hard vinyl chloride resin layer via an allyl resin layer. Eaves gutter. 2. An eaves trough comprising a reinforcing core material coated with a hard vinyl chloride resin, wherein a soft vinyl chloride resin layer and an allyl resin layer are provided in this order on the outer surface of the hard vinyl chloride resin layer. An eaves gutter characterized by having a resin layer formed.