JP2630808B2 - Sealer material and sealing method using the same - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sealer material for covering and protecting a sharp part, and a sealing method using the same. More specifically, for example, a sealer material which is convenient for providing edge tightness of a cut edge of an iron plate, providing watertightness at a place where a plurality of cut edges of the iron plate are overlapped, and imparting rustproofness, and a sealing method using the same It is about.

Conventional sealer materials are joints of metal plates such as iron plates that form the body of automobiles, trains, etc., gaps between joints, corners and other iron plates, gaps, wood in buildings, plastic lumber, and other construction materials. It is used in large quantities for filling gaps and various gaps. In general, a sealer gun is used for applying the sealer material as described above, and the sealer gun is pressed against a portion to be processed such as a seal, and is moved while discharging the sealer material to perform a required sealing. But,
Construction by this method moves the gun against the part to be processed, for example, in the case of a car body, for example, it is very efficient and effective in a part where the construction operation by the gun is easy such as the side of the body, It is not suitable for construction on the back side of the floor or corners where the gun operation is difficult, for example. Further, it is almost impossible to apply the sealer material with a gun to a portion having a sharp angle such as a cut edge of an iron plate or a steel bar, a narrow portion, a portion having irregularities, and the like. For this reason, an appropriate paint or the like is thickly applied to such a portion to seal the portion. However, since the paint is difficult to ride and it is difficult to perform a satisfactory sealing, such sealing is incomplete. All,
In particular, in the case of an iron material, rust easily occurs from this portion under the influence of moisture and the like, which is a major problem.

As described above, an object of the present invention is to easily and reliably seal a portion such as a sharp end portion such as a cut edge of various plate materials and bars which are difficult to seal with a conventional sealer material and a construction method. And a sealing method using the same.

The greatest feature of the structure of the sealer material of the present invention is that the outer surface of the sealer composition is covered with a covering material such as plastic film, and the covered covering material is notched or easily cut. That is, a means for easily opening the thin wire tape or the string is provided. The sealer material configured as described above can usually be easily handled as a stick-shaped or thick string-shaped non-sticky object.
In addition, the method of applying the sealer material is such that a cut provided in the covering material enclosing the sealer composition is pressed against a portion to be processed such as a sharp end, and the sharp end is cut from the cut with the sealer material. After that, the sealer composition is cured by irradiating heat or ultraviolet rays to complete the application. The coating material of the sealer material may be peeled off after the sealer composition is cured, or may adhere to the sealer composition as it is, which can be selected by a treatment process following the application of the sealer material. For example, after the sealer composition of the sealer material is cured, when the coating is further performed using a paint or the like, the paint needs to adhere to the surface of the sealer material. A good material may be used as it is without being peeled off, and may be peeled off as long as it has good adhesion between the sealer composition and the paint. Since the sealer composition itself, which constitutes the sealer material, is sticky before curing, it can be fixed to the construction site as it is, and its outer surface is covered with a coating material. The shape can be maintained without sagging. In other words, when a sealant is applied to a sharp part, if a material such as a tube is used as a covering material, the sealant is formed to have a certain thickness and shape. In a conventional sealer material, for example, when applied in some way to a sharp portion such as an end of a thin iron plate, the sharp portion breaks through the layer of the sealer material, sticks out, or drops, Such a phenomenon does not occur in the sealer material of the present invention because the sealer material covers the sealer material. In the case of the edge of a thin iron plate, rust is a serious problem, so it was necessary to protect it with paint or a sealer material. It protruded from the sealer material layer, and the purpose was not fulfilled. With the present invention, that point can be completely overcome.

The sealer composition used in the present invention is not particularly limited to the type of resin and the type of filler and other additives. Its properties are non-curable, and curable ones that are uncured, retain their shape when covered with a coating material, so that they can be handled as stick-shaped or string-shaped non-adhesive objects, and sealer coating. From the opening of the material, for example, when inserting the edge of the steel plate, by the pressure of the steel plate insertion,
Plasticity to the extent that it can be deformed and adhesiveness to a steel plate are required. Furthermore, in the case of a curable sealer composition, if it is thermosetting, there is no significant decrease in viscosity during heat curing, and the applied sealer material does not sag or flow, and ionizing radiation ( Above all, in the case of ultraviolet (UV) curability, it has ionizing radiation transparency enough to cure the whole uniformly in a short time. Generally, vinyl chloride resin, ethylene-vinyl acetate copolymer, epoxy resin,
Synthetic resin such as alkyd resin, acrylic resin, urethane resin, chloroprene rubber, butyl rubber, styrene butadiene rubber, isobutene rubber, isobutylene rubber, etc., bituminous material, plasticizer to at least one elastomer selected from natural rubber and the like, A known curable or non-curable sealer composition containing a filler, a stabilizer, a curing agent and the like is used. In addition, the present inventors have separately filed a reactive pressure-sensitive adhesive composition (Japanese Patent Application No. 62-266899),
At least one kind of acrylic adhesive such as saturated polyester resin, acrylic rubber, polybutadiene, acrylic copolymer and acrylate polymer which is solid at room temperature, and (meth) acrylic urethane monomer having a viscosity of at least 10 ² cps at room temperature A composition in which at least one of low molecular weight substances such as oligomers and other (meth) acrylic oligomers is combined with a light or heat curing catalyst, and where necessary, a filler or other compounding agent is contained as a sealer composition. Can be used.

As the covering material, an appropriate one may be selected from general plastic films and used.However, when it is necessary to peel off the covering material after applying the sealer material to the construction part, polypropylene or polyethylene may be used. , Polyvinyl alcohol, films such as polyethylene terephthalate (PET) are preferable, and when the coating material is not peeled off and is further coated with a paint or the like, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polyamide resin, etc. Is preferred. Also, instead of the plastic film described above, an acrylic melamine resin, a melamine alkyd resin, an alkyl urethane resin or other paint is applied to the outer surface of the sealer composition and dried to form a coating film on the outer surface of the sealer composition. May be done. In this case, if a coating film having elasticity and resilience is formed, shape maintenance can be imparted. When the sealer composition forming the above coating film is thermosetting, the coating of the coating film formed on the outer surface is an ultraviolet-curing type, and when the sealing composition is ultraviolet-curing, the coating is on the outer surface. It is preferable to use a thermosetting type or a lacquer type as a paint for a coating film to be formed.

The coating material covers the outer surface of the sealer composition while the plastic film or the like remains as a film to form a sealer material, and is formed in advance with a plastic film or the like into a bag, a bag-like body, a tube or other cylindrical body, The sealing material can be filled into the sealing material to form a sealer material having a circular, elliptical, flat circular or other arbitrary cross section. After filling the sealer composition into a tube-shaped or bag-shaped coating material, the sealer material may or may not be closed at its open end.

 Hereinafter, an embodiment will be described.

Example 1 A penguin sealer (trade name) (trade name) (2) manufactured by Sunstar Giken Co., Ltd. was used as a sealer composition in a tube (1) made of polyethylene terephthalate (PET) film having a thickness of 25 μ, an inner diameter of 5 mm, and a length of 15 cm. After filling, a cut (3) was made in the longitudinal direction with a knife to form a sealer material (5) (first).
2). Since the viscosity of the sealer composition was high, handling was easy even if a cut was made. This is 0.3mm thick,
To the edge (10a) of a steel plate (10) with a width of 75mm and a length of 150mm,
Pressing the cut of the sealer material, it was constructed (No. 5A
Figure, Figure 5B). Thereafter, the PET tube (film) was peeled off and heated at 140 ° C. for 20 minutes. As a result, a steel sheet (11) having a fixed working width and a sealed edge portion was obtained (FIG. 5C).

(Comparative example)

The sealer composition used in Example 1 was sealed with a sealer gun having a diameter of 0.3 mm, and was 0.3 mm in thickness and 75 mm in width as in Example 1.
Although it was installed on the edge of a steel plate with a length of 150 mm, it was not only difficult to move the sealer gun against the edge of the steel plate while discharging it at a constant speed, but also the discharged sealer composition was transferred to the edge of the steel plate. I just rode and did not ride on both sides of the edge. Further, since the moving speed of the gun cannot be made constant, the discharge amount differs in each part, and the sealer composition has a wavy shape, and the appearance is poor.

[Example 2] Polyacrylic acid ester resin 100 parts (weight) Epoxy resin (trade name of Araldite Y-261 Ciba Geigy) 80〃 Dicyandiamide (curing agent) 5〃 Aerosil No. 300 (Nippon Aerosil Co., Ltd.) 10〃 Above The compounded sealer composition (viscosity of about 30,000 cp.60 ° C) is molded by an extruder so as to have a diameter of 7 mm, and the molded sealer composition is placed on a polyvinylidene chloride film having a width of 22 cm and a thickness of 20 μm and rolled. The film was wrapped around its outer periphery, and the excess film was cut with scissors to obtain a string-like sealer material having a non-adhesive flexibility and a cut in the length direction as a whole. This was carried out by pressing a cut of a sealer material at a location where at least one of the iron plates has an edge portion where two 0.3 mm cold-rolled steel plates overlap. And leave the polyvinylidene chloride film without peeling
Heated at 160 ° C. for 30 minutes. The sealer composition cured and the film did not peel. Further, a paint (a paint such as an acrylic melamine resin, a melamine alkyd resin, or an acrylic urethane resin) was applied thereon and heated at 160 ° C. for 30 minutes, but the adhesion to the paint was good.

[Example 3] Ethylene vinyl acetate copolymer resin (EVA-150 Mitsui Polychemicals Co., Ltd., trade name) 70 parts Acrylic urethane resin (Aronitix M-1100 Toagosei Co., Ltd., trade name) 30〃 Irgaki Yua 651 (Ciba Geigy) 2) The above sealer composition was formed into a rod having a diameter of 7 mm, which was covered with a non-stretched polyethylene film having a thickness of 75 μm, and the film end was heat-sealed. In addition, a sealer material was formed in which a thread was inserted in the length direction and a cut was made in the length direction by pulling the thread. This sealer material forms a cut by drawing the thread, and the cut is 0.8 mm thick
Was pressed against the edge of the cold-rolled steel sheet, and the sealer material was applied uniformly around the edge. afterwards
Ultraviolet rays were irradiated from a distance of 15 cm for about 3 seconds with a 1 KW high pressure mercury lamp (80 W / cm) to cure the sealer composition of the sealer material. The polyethylene film could be easily peeled. The surface of the cured sealer composition was completely non-tacky, did not undergo deformation due to heat, and the sealer material was almost completely unchanged from the form at the time of application.

[Example 4] Acrylic urethane resin (Aronix M-1100 Toagosei Co., Ltd., trade name) 30 parts Saturated polyester resin (Vylon 200 Toyobo Co., Ltd., trade name) 70〃 ditercial butyl-diperoxyisophthalate (trade name) Perbutyl IF, Nippon Oil & Fats Co., Ltd. 1) The above-mentioned sealer composition was molded into a 7 mm diameter rod, and the outer surface thereof was coated with an ultraviolet curable paint (CKS-1002, Nippon Synthetic Chemical Co., Ltd., trade name, (100% solids), coated to a thickness of 20μ, 1K.W. high pressure mercury lamp (80W / c
UV light was applied for 2 seconds at a distance of 10 to 15 cm using m), and a cut was made in the length direction with a cutter in a sealer material having a coating material formed by a non-stick coating film. The cut edge of the 1 mm thick FRP plate was pressed against the cut, and a sealer was applied to the cut edge and the both sides of the cut edge. After that, when heated at 150 ° C for 20 minutes, the sealer material hardened and F. had no edge parts.
An RP plate was obtained.

Example 5 A UV-curable sealer composition (2a) used in Example 3 on a PET film (1) having a thickness of 25μ, a width of 22 mm, and a length of 1 m
Was coated to a thickness of 100 μm, and the thermosetting sealer composition (2b) of Example 4 was further coated thereon to a thickness of 700 μm (No. 6A).
Figure). This is rolled into an elliptical cylindrical shape with the PET film side outside, and irradiated with ultraviolet light for 2 seconds at a distance of 10 to 15 cm using a 1 K.W. high-pressure mercury lamp (80 W / cm), and the cross section has an elliptical shape. A sealer material (5) with (3) was obtained (No. 6B
Figure). After UV irradiation, the PET film was easily peeled off.
The inside of the sealer material (5) was left hollow (14).

Edge part (10a) of 0.3mm thick cold-rolled steel plate (10)
Was inserted into the cut (3) of the sealer material (FIG. 6C), and the sealer material was pushed from the outside with a finger to expel the air in the hollow portion (14). In this state, heating was performed at 140 ° C. for 30 minutes to obtain a steel sheet whose edge portion was well coated (FIG. 6D). When an acrylic urethane resin paint (Utanal, Ohashi Chemical Industry Co., Ltd.) was further applied and tested for adhesion, the adhesion was good.

[Example 6] The sealer composition used in Example 4 was sealed in a tube made of polyethylene film having a thickness of 50 µm and having an inner diameter of 10 mm, and the obtained bar-shaped sealer material was subjected to a heat sealer for every 10 mm in length, and the sealer composition was obtained. A chip of the sealer material enclosing the object was obtained, and a cut was made in this with a knife. The cut was pressed against the edge (cut) of a steel rod having a diameter of 5 mm, and a sealer material was installed. Thereafter, when heated at 160 for 20 minutes, the sealer composition was cured, and a steel bar without a sharp cut was obtained. After curing, the polyethylene film shrunk by heat could be easily peeled off.

[Example 7] Similarly to the sealer material used in Example 6, the outer diameter was 7 mm,
The construction was completed by pressing against a circular cut surface of a steel pipe with an inner diameter of 5 mm. When heated at 150 ° C. for 30 minutes as it was, the sealer composition was cured, and the shrunken polyethylene film could be easily peeled off. The water tightness of the steel pipe sealed in this way was sufficient.

The thickness of Example 8 Butyl rubber 100 fine powder silicic acid 40 carbon black 100 polybutene 180 (the remaining fraction at a molecular weight 250 to 2500 liquid polymer obtained by extracting butadiene from C ₄ fraction produced in naphtha cracking) the sealer composition The tube was sealed in a tube having an inner diameter of 7 mm and made of a non-stretched polyethylene film having a thickness of 50 μm, and a cut was made in the obtained bar-shaped sealer material.

This was pressed against the edge of a cold-rolled steel sheet having a thickness of 0.8 mm from the cut, so that the sealer material was applied uniformly around the edge. Thereafter, the polyethylene film was peeled off to complete the construction.

[Example 9] Vinyl chloride resin 16 parts Synthetic rubber (SBR) 5 Calcium carbonate 48 Synthetic resin (acrylic resin) 2 Phthalates 27 Anti-aging agent 2 The sealer composition (clay-like) having the above composition was prepared. It was extruded by an extruder so as to have a diameter of 5 mm, covered with a non-oriented polyethylene film (30 μ), and cut along the length. This was pressed against the edge of a cold-rolled steel sheet having a thickness of 0.3 mm from the direction of the cut. Thereafter, when the unstretched polyethylene film was peeled off, the sealer was constructed without warping, and no meandering or sagging was observed.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is a plan view, FIG. 2 is a sectional view of FIG. 1, FIG.
5A, 5B and 5C are schematic explanatory views showing examples of construction,
FIG. 6A, FIG. 6B, FIG. 6C, and FIG. 6D are schematic explanatory views showing other construction examples. (1) is a covering material, (2) is a sealer composition, (3) is a cut, and (5) is a sealer material.

Claims (5)

(57) [Claims] 1. An outer surface of a sealer composition having no fluidity and plasticity at room temperature is covered with a coating material, and a cut or a cut into which a portion to be processed can be easily inserted is easily formed in the coating material. A sealer material provided with opening means. 2. The sealer material according to claim 1, wherein said coating material is formed of a plastic film. 3. The sealer material according to claim 1, wherein said coating material is transparent and transparent to ultraviolet rays. 4. The sealer material according to claim 1, wherein the coating material is a cured coating film formed on the outer surface of the sealer composition. 5. A sealer in which an outer surface of a sealer composition having no fluidity and plasticity at room temperature is covered with a coating material, and the coating material is provided with easy-opening means capable of easily forming a cut or a cut. A sealing method, comprising preparing a material, applying the material to a construction part from a cut formed in the sealer material, and curing the sealer composition.