JPH0866967A - Transom board - Google Patents

Abstract

PURPOSE: To obtain a transom board with an enhanced durability by the use of core material being hardened and foamed with foamable polyurethane resin liquid impregnated into glass fiber oriented in a constant direction. superimposing the core materials in a parallel crossed relationship in the fiber direction, and then integrating them under compression with synthetic resin impregnated-mats lying among respective core materials. CONSTITUTION: Core material l is cut into a transom shape. and the fiber direction of the core material l is put into a lateral direction for applying a treatment liquid over the entire surface, then glass mats 4.6 with polyester resin impregnated therein are press-bonded on both surfaces. An intermediate core material 2 is put thereon in a manner such that the fiber direction is in the longitudinal direction, and they are stuck with each other through the application of the same liquid on the surface being in contact with the mat 4. The same liquid is applied on the upper surface of the core material 2, and a glass fiber mat 5 is put thereon, and after the application of the same liquid is done on the upper surface, the same liquid is applied on the lower surface of a core material 3 for the upper surface and it is put in such a manner that the fiber direction is in a lateral direction, following this, a glass fiber mat 7 is placed on the upper surface of the core material 3 to subsequently be stuck with each other. The rear and front surfaces of a plywood obtained in this manner is coated with gel coat resin 8, 9, and they are subjected heat press-bonding process to thereby be integrated in use of a mold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transom plate for a stand on which a rubber boat engine is mounted.

[0002]

2. Description of the Related Art Conventionally, a transom plate for mounting an engine on a rubber boat is a five-layer plywood mainly made of natural beech wood or lauan wood. Beech wood is hard and dense, but this plywood may warp after long-term use, or each layer may be peeled off and a so-called "su" is introduced.
When water enters into it, it will rot, and when the water in "su" dries or water enters again, the phenomenon such as the stickiness peculiar to trees gradually disappears, and it will be damaged in about 3 years. The current situation is that they will. Although the transom plate manufactured using glass fiber reinforced resin to improve the current situation certainly has a longer service life than the case of beech plywood, once it is damaged, it is difficult to repair it. there were. Therefore, it has been proposed to use a glass fiber reinforced resin as a part thereof. For example, Japanese Utility Model Laid-Open No. 59-139484 discloses a rubber boat transom in which a glass fiber reinforced resin is coated on the entire outer surface of a transom made of wooden board. However, this transom has the above-mentioned drawbacks when water enters from a craft hole, for example, because the central part is a wooden board.

[0003]

The present inventor has completed various aspects of the present invention as a result of various examinations of those having a longer useful life than the conventional transom plate, and the object of the present invention is to provide a transom plate having good durability. Is to provide.

[0004]

That is, the gist of the present invention is to use a core material obtained by aligning glass fibers in a certain direction, impregnating this with a foamable polyurethane resin liquid, and curing and foaming the same.
A transom plate characterized by stacking laterally / vertically / horizontally according to the fiber direction of the core material in a crosswise manner, interposing a mat impregnated with a synthetic resin solution between the core materials, and pressing and integrating them. is there. In the present invention, a reinforcing fiber board is used as a core material, a mat is interposed between the core materials to equalize the load applied to the transom, and the fiber direction of the core material is made laterally, vertically, and horizontally in the shape of an igeta. The breaking strength was increased, and the transom plate was made lightweight by using a foamable polyurethane resin liquid as the resin liquid used for the core material (reinforced fiber board).

Next, the present invention will be described in detail. In the present invention, the core material is a glass fiber impregnated with a foamable polyurethane resin liquid and solidified, and long glass monofilament (strand) glass fibers are used as the glass fibers. The glass fibers are aligned in a certain direction and impregnated with a foamable polyurethane resin liquid. After thermosetting, the obtained core material is homogeneously dispersed in a monofilament state in the thermoset foam with the long glass fibers arranged in a certain direction, and the foam maintains completely closed cells.

[0006] The fiber direction of this core material is arranged so that it is orthogonal to the horizontal and vertical directions in the shape of an Igeta, and a glass fiber mat impregnated with a resin liquid is interposed therebetween. As the mat to be interposed, for example, # 450 mat made of glass fiber or the like is used, and as the resin liquid, any resin used in ordinary FRP may be used, for example, phenol resin or unsaturated polyester resin. . In order to impart weather resistance to the transom plate according to the present invention, it is preferable to apply a gel coat to the surface thereof. As the gel coat resin, an isophthalic acid type saturated polyester resin or an epoxy resin is used, but an isophthalic acid type saturated polyester resin is preferable.

The layer structure of the transom plate according to the present invention is shown in FIG. In FIG. 1, reference numerals 1, 2, and 3 denote urethane core materials obtained by impregnating glass fibers with a foamable polyurethane resin liquid and heating and curing the same, and 4 and 5 impregnating glass fiber mats with polyester resin. This is the mat obtained. Urethane core material 1, 2 and 3 glass fiber directions are arranged in horizontal, vertical and horizontal directions in the shape of an igeta, and glass fiber mats 4 and 5 are interposed between them, and they are pressure-bonded by a die to be integrated. Use plywood. Subsequently, the same glass fiber mats 6 and 7 as described above were attached to the front and back surfaces of the plywood, and then the gel coat resin liquids 8 and 9 were put into a mold sprayed with a spray gun and pressure-bonded. It is cured to form a laminated plate. At this time, a transom plate with a beautiful surface can be obtained by using a mirror surface for the molding die. It should be noted that the excess portion that is cured after lamination is cut. Alternatively, it may be cut in advance and laminated and cured.

[0008]

EXAMPLES The present invention will be described below with reference to examples. Neolumba-FFU (manufactured by Sekisui Chemical Co., Ltd.) was used as a core material obtained by impregnating glass fiber with a foamable polyurethane resin liquid and heating and curing it. This core material 1 was first cut into a transom shape. The fiber direction of this core material is set in the horizontal direction, and the resin treatment liquid (Rigolac 157BQT-
N) is applied, and glass fiber mats (# 450) 4 and 6 impregnated with a polyester resin are pressure-bonded to both surfaces thereof.
On top of this, as the intermediate core material 2, the glass fiber mat (# 450) was placed so that the fiber direction was the vertical direction.
The same resin treatment liquid as described above is applied to the surface in contact with 4 and bonded. The same resin treatment liquid is applied to the upper surface of the intermediate core material 2, then the glass fiber mat (# 450) 5 is placed, and the same resin treatment liquid is applied to the upper surface thereof, and then the lower surface of the upper core material 3 is applied. After the resin treatment liquid is applied to, the fibers are placed so that the fiber direction is horizontal, and the glass fiber mat (# 450) 7 is placed on the upper surface of the core material for the upper surface and bonded. Gel coat resins 8 and 9 are applied to the back surface and the front surface of the plywood thus obtained, and they are integrated by thermocompression bonding with a molding die. At this time, the surface can be beautifully finished by using a mirror-finished mold. The desired portion of the transom plate thus obtained is sanded to improve the adhesiveness to the rubber boat body, and then assembled and finished. Further, the threaded portion may be waterproofed with a sealant material such as silicone.

[0009]

Industrial Applicability As described above, according to the present invention, glass fibers are aligned in a certain direction, impregnated with a foamable polyurethane resin solution, and cured and foamed. It is more durable and lighter because it is reinforced with foam, and its fiber direction is horizontal,
Since the layers are laminated vertically and horizontally and in the form of a jetter, and a glass fiber mat is interposed between the layers, the load is dispersed and evenly applied, so that a very good transom plate is provided without warping or the like. You can

[Brief description of drawings]

FIG. 1 is a partially laminated cross-sectional perspective view of a transom plate according to the present invention.

[Explanation of symbols]

 1, 2, 3 Core material 4, 5, 6, 7 Glass fiber mat 8, 9 Gel gel resin layer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B32B 5/28 A 9349-4F 27/40 9349-4F B63B 7/08 A 8408-3D B63H 20 / 02

Claims (1)

[Claims] 1. A core material obtained by aligning glass fibers in a certain direction, impregnating a glass fiber with a foamable polyurethane resin liquid, and curing and foaming the glass fiber.
The transom plate is characterized by stacking them in the shape of a horizontal jet and interposing a mat impregnated with a synthetic resin liquid between each core material, and press-bonding and integrating them.