JPH04120823U - rain gutter - Google Patents

Abstract

(57) [Summary] [Purpose] In a rain gutter with a composite structure consisting of a core layer made of a metal plate and a synthetic resin layer encasing it, a large number of through holes are drilled on both sides of the core layer. A specific synthetic resin layer with excellent adhesion to the core material layer is laminated to create a rain gutter with excellent adhesion between the core material layer and the synthetic resin layer. To provide a rain gutter in which a material layer and a synthetic resin layer do not separate. [Structure] In Fig. 2, core material layer 1 made of steel plate
Synthetic resin layers 3 and 3 made of carboxylic acid-modified acrylic resin are provided on both sides of the carbonyl group-containing synthetic resin layer, and as a result, the polarity of the carbonyl group allows the two to be firmly adhered to each other. . Therefore, even if exposed outdoors for a long period of time, the core material layer 1 and the synthetic resin layer 3 will not peel off, improving rust prevention and, in turn, providing excellent heat deformation resistance.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a composite material consisting of a core material made of a metal plate and a synthetic resin layer encasing it. Concerning technology for improving rain gutters made of wood.

0002

[Conventional technology]

Rain gutters made of synthetic resin such as hard PVC resin are resistant to changes in environmental temperature during use. Because it expands, contracts, and deforms to a greater extent, it causes unfavorable results in terms of function and appearance. There were drawbacks.

0003 Conventionally, in order to solve this drawback, composite materials were used in which metal plates or wire mesh were placed inside synthetic resin. Rain gutters are molded using wood to reduce thermal deformation using physical force, and synthetic wood is used to form rain gutters. Attempts have been made to improve mechanical strength, which was insufficient with fat alone. for example , Utility Model Publication No. 63-26506 discloses a metal plate made of a metal plate with a large number of through holes. Apply an adhesive layer to the surface of the core material so that it enters the through hole, and then This document describes a rain gutter that is coated with a synthetic resin layer through a synthetic resin layer.

0004 In other words, this rain gutter bonds metal and synthetic resin, which normally cannot have strong adhesive strength. In order to do this, an adhesive was used. By having such a configuration, The adhesive layer bites into the through hole and firmly adheres to the core material. It also firmly adheres to the synthetic resin layer formed on the adhesive layer, and as a result, it is combined with the core material layer. By integrating the resin layer and interposing the adhesive layer, it is possible to The aim is to absorb the impact force of

[0005]

[Problem that this invention attempts to solve]

However, in the case of the above-mentioned conventional technology, what is bonded through the through hole is adhesive. layer, and although the adhesive layer has the effect of absorbing impact force, this impact force is There is a limit to the absorption capacity because it is absorbed by the adhesive layer and synthetic resin layer on the surface. Also, mechanical strength Since it is an adhesive after all, there is a limit to its strength, and it cannot hold up against strong external forces. It's not a durable material. Furthermore, we will further develop this technology and, for example, use it as a core material. By drilling a through hole after applying the adhesive and drying it, the adhesive can enter the through hole. Cover the adhesive layer with a synthetic resin layer and pass through the through hole. It is also possible to combine the synthetic resin layers on both sides by coating the synthetic resin layer. At this time, the heat of the molten synthetic resin heats the adhesive and causes it to flow inside the through hole. In the end, the through-hole becomes buried in the adhesive, and the synthetic resin on both sides is bonded by the through-hole. The problem was that it was difficult.

[0006] Also, even though it is just an adhesive, it must have adhesion to both metal and synthetic resin layers. It is not easy to find the optimal adhesive depending on the combination of the two. Regarding this point, the above-mentioned Utility Model Publication No. 63-26506 does not contain any description. not present.

[0007] As a result of various efforts, the inventors of the present invention developed a specific synthetic resin that has excellent adhesion to metals. We discovered that this problem could be solved by using It is.

[0008] In other words, the present invention allows the synthetic resin layer to be made of metal even if exposed outdoors for a long time. It was created with the aim of providing rain gutters that do not separate from the core material. Ru.

[0009]

[Means to solve the problem]

The invention according to claim 1 is characterized in that a core material made of a metal plate with a large number of through holes is formed on both sides of the core material. , a synthetic resin layer having a carbonyl group is provided, and the synthetic resin on both sides is provided through the through hole. The gist of the claim is a rain gutter characterized by a combination of layers. The invention described in 2 is based on a thermosetting material that is highly adhesive to the core material on both sides of the core material made of a metal plate. A resin layer and a synthetic resin layer are laminated in this order, and a large number of through holes are drilled in the core material. At the same time, the synthetic resin layer provided as the outermost layer is bonded through this through hole. The gutter is characterized by:

0010 In the device according to claim 1, the synthetic resin having a carbonyl group includes, for example, For example, acrylic resins, vinyl chloride-vinyl acetate copolymer resins, urethane resins, polymers, etc. Resin containing a monomer having a carbonyl group as a constituent unit such as realester resin , or carboxylic acid modification in which carboxylic acid or maleic acid is introduced into these resins. resins or maleic acid-modified resins, or resins other than these resins (e.g. Carboxylic acid modified resin or maleic acid modified resin (poxy resin, phenol resin) These resins can be used alone or in combination of two or more compatible resins. use In addition, in order to give this resin elasticity and impact resistance, natural rubber and synthetic rubber are used. It is optional to add elastic materials such as gum or fillers such as pigments.

[0011] The surface of a core material made of a metal plate is coated with the above synthetic resin having a carbonyl group. As a means, the synthetic resin containing this carbonyl group is heated to a molten state, and this A method of extruding and coating the surface of the core material, or a method of coating this synthetic resin with methyl ethyl ketate. Dissolve it in an organic solvent such as ton, acetone, toluene, or xylene and apply it to the surface of the core material. Examples include a method of cloth.

0012 In the invention according to claim 2, the thermosetting resin having high adhesiveness with the core material is Among the carbonyl group-containing synthetic resins mentioned above, thermosetting resins are preferred. In the invention according to claims 1 and 2, the metal plate used as the core material is made of iron, for example. Examples include stainless steel and aluminum. The surface of this core material is carbonyl. In order to improve the adhesion with synthetic resins having ruyl groups and the corrosion resistance of the surface, soap and Clean by removing deposits such as oil and fat by degreasing using an activator, or If the surface is roughened and activated by pickling using hydrochloric acid, nitric acid, etc. In addition, the treated surface is plated with zinc, chromium, etc., and phosphoric acid, chromate, etc. It is optional to perform film treatment such as.

[0013] In the device according to claim 2, the synthetic resin layer laminated as the outermost layer includes: Thermoplastic resins with high fluidity are effective for this purpose, and PVC resins and polyethylene Examples include ren resin, polypropylene resin, and modified resins of these resins. Particularly suitable are vinyl chloride resins that are highly compatible with the above thermosetting resins. , or may be a thermosetting resin depending on the case.

[0014] In addition, plasticizers, lubricants, heat stabilizers, pigments, and other fillers are added to these synthetic resins. It is optional to add. In order to manufacture the rain gutter according to claim 1, for example, a long piece of gold wound in a coil shape is used. While unrolling the metallic thin plate, punching is used to punch through holes on its surface. , the ears of the gutter are shaped using a molded plate, etc., and then the carbonyl group in the molten state is The core material is passed through a mold equipped with an extruder from which the synthetic resin is continuously extruded. The surface of the gutter is coated, and then the main body of the gutter is formed using a molded plate, etc. while cooling the entire body. After passing through a take-up machine, the material can be cut into regular lengths with a cutter.

[0015] In addition, other fixed-length core materials shaped into a gutter can be used in injection molding. A method of coating synthetic resin containing carbonyl groups using insert molding method can also be mentioned. According to this method, the integral covering of the ear part and the main body part of the gutter is achieved. In addition, it is possible to obtain one in which both ends in the longitudinal direction are also coated with synthetic resin.

[0016] In order to manufacture the rain gutter according to claim 2, while similarly paying out the core material, the surface thereof is coated with After applying an uncured thermosetting resin that has excellent adhesion to the core material and curing it by heating, A through hole is made on the surface using punching. By doing this, the inside of the through hole This prevents the resin from digging into the area. However, along with drilling the lever through hole, the molded plate The ears of the gutter are shaped using, for example, thermoplastic synthetic resin in a molten state. The fat is coated on the surface of the core material through a mold attached to an extruder where it is continuously extruded. Then, while cooling the whole, the main body of the gutter is shaped using a molding plate, etc. After passing through, it can be cut to a regular length with a cutter.

[0017]

[Effect] The invention according to claim 1 is characterized in that a core material made of a metal plate with a large number of through holes is formed on both sides of the core material. , a synthetic resin layer having a carbonyl group is provided, and the synthetic resin layer on both sides is formed through a through hole. It has a structure in which resin layers are combined. A carbonyl group generally exists between carbon and oxygen. It has polarity due to polarization derived from double bonds, and has a polarity such as hydroxyl groups that normally exist on metal surfaces. Easy to electrically bond with polar groups. Therefore, a synthetic resin layer containing a carbonyl group and a gold It has good adhesion to the metal plate, and the presence of through holes in the core material allows for good bonding of the synthetic resin layer. In combination, the adhesive force at the interface between the core material layer and the synthetic resin layer is improved.

[0018] The invention according to claim 2 has a structure in which both sides of the core material made of a metal plate have high adhesiveness with the core material. A thermosetting resin layer and a synthetic resin layer are laminated in this order, and the core material has many through holes. At the same time, the synthetic resin layer provided as the outermost layer is bonded through this through hole. Because the core material and the thermosetting resin layer have good adhesion, the upper The presence of through holes in the core material improves the bonding strength between the outermost synthetic resin layers. do.

[0019]

【Example】

An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a front view showing an example of the invented rain gutter according to claim 1 or 2, and FIG. In FIG. 1, a portion surrounded by a circle drawn by a chain line is shown enlarged. FIG. 3 is an enlarged sectional view of the rain gutter, and FIG. 3 is an enlarged sectional view of the rain gutter according to claim 2. Ru.

[0020] In Figures 1 to 3, 1 is a core material layer made of a strip-shaped steel plate with a thickness of 0.2 mm. As shown in FIGS. 2 and 3, a large number of through holes are formed at equal intervals by punching. 2, 2, etc. are drilled. 3 is a carbide coated on both sides of the core layer 1 by extrusion. A carbonyl group-containing synthetic resin layer made of acid-modified acrylic resin. Before the ejected resin hardens, it enters the through holes 2, 2... and forms on both sides. The synthetic resin layers 3, 3 are welded to each other and are firmly connected. The rain gutter 7 described in item 1 is formed.

[0021] In addition, in Fig. 3, 4 is a core material layer made of a strip-shaped steel plate with a thickness of 0.2 mm. Therefore, a large number of through holes 2, 2, etc. are similarly punched at equal intervals. Ru. Moreover, 5, 5 is a core material made of epoxy resin provided on both sides of this core material layer 4. This is a thermosetting resin layer with excellent adhesiveness to layer 4, and this synthetic resin layer 5 has through holes. 2, 2, etc. are provided by coating before drilling. 6, 6 is vinyl chloride A synthetic resin layer made of resin, extruded and coated to a thickness of 1.2 mm. It was formed. In this way, the rain gutter 8 of the present invention is formed.

[0022]

[Effect of the idea]

The invention according to claim 1 is characterized in that a core material made of a metal plate with a large number of through holes is formed on both sides of the core material. , a synthetic resin layer having a carbonyl group is provided, and the synthetic resin layer on both sides is formed through a through hole. It has a structure in which resin layers are combined. The synthetic resin layer with carbonyl groups is made of gold. It has good adhesion to the metal plate, and the presence of through holes in the core material allows for good bonding of the synthetic resin layer. In combination, the adhesive force at the interface between the core material layer and the synthetic resin layer is improved.

[0023] Therefore, when a shock is applied to one surface from the outside, this shock passes through the through hole. Since it is propagated to the synthetic resin layer on the other side, it has excellent impact resistance. In addition, even if exposed outdoors for a long time, the metal core material and synthetic resin layer will not peel off. To obtain a rain gutter that does not separate, has rust prevention properties, and has heat deformation resistance. can be done.

[0024] The invention according to claim 2 has a structure in which both sides of the core material made of a metal plate have high adhesiveness with the core material. A thermosetting resin layer and a synthetic resin layer are laminated in this order, and the core material has many through holes. At the same time, the synthetic resin layer provided as the outermost layer is bonded through this through hole. Because the core material and the thermosetting resin layer have good adhesion, the upper The presence of through holes in the core material improves the bonding strength between the outermost synthetic resin layers. do.

[0025] Therefore, when a shock is applied to one surface from the outside, this shock passes through the through hole. Since it is propagated to the synthetic resin layer on the other side, it has excellent impact resistance. In addition, even if exposed outdoors for a long time, the metal core material and synthetic resin layer will not peel off. To obtain a rain gutter that does not separate, has rust prevention properties, and has heat deformation resistance. can be done.

[Brief explanation of drawings]

FIG. 1 is a front view showing an example of the present invention according to claim 1 or 2. FIG.

FIG. 2 is an enlarged sectional view of the rain gutter according to claim 1, showing an enlarged portion of the portion surrounded by a circle drawn with a chain line in FIG. 1;

FIG. 3 is an enlarged sectional view of the rain gutter according to claim 2.

[Explanation of symbols]

1 Core material layer 2 Through hole 3 Synthetic resin layer having carbonyl group 4 Core material layer 5 Synthetic resin layer with high adhesiveness with core material layer 4 6 Synthetic resin layer 7 Invented rain gutter 8 Invented rain gutter

Claims (2)

[Scope of utility model registration request] Claim 1: A core material made of a metal plate with a large number of through-holes is provided with synthetic resin layers having carbonyl groups on both sides, and the synthetic resin layers on both sides are bonded through the through-holes. Rain gutter. 2. A thermosetting resin layer with high adhesiveness to the core material and a synthetic resin layer are laminated in this order on both sides of a core material made of a metal plate, and a large number of through holes are perforated in the core material. A rain gutter characterized in that the outermost synthetic resin layer is bonded through the through hole.