JPH06170030A - Production of composite material interposed with rubber layer - Google Patents

Abstract

PURPOSE:To provide the process for production of the composite material interposed with a rubber layer with which sufficient strength of adhesion is obtainable. CONSTITUTION:A rubber liquid prepd. by dissolving a rubber compd. contg. a vulcanizer, vulcanization accelerator and other fillers without contg. higher fatty acids and lipids is applied on a base material 10 and this base material 10 coated with thus rubber liquid is put into a drying furnace where the rubber liquid is dried and vulcanized. The other resin material, metallic material 16, etc., are bonded to the base material 10 via the vulcanized rubber layer 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a composite material having a rubber layer interposed, for example, a ski.

[0002]

2. Description of the Related Art Skis are composed of sliding surface members, edges, cores,
It is made up of various constituent members such as an upper surface material, and is manufactured by integrally joining these constituent members. There are various methods for manufacturing these skis, and various materials such as wood, resin, and metal are used for the constituent members.
For example, a metal is used for the edge, and a thin metal plate for reinforcement is used for the inside of the sliding surface member, the inside of the upper surface member, and the like.

The above-mentioned edge parts and metal reinforcing plate are joined and integrated with other constituent members of the ski, but since these metal parts are made of metal, they are different from other constituent members such as wood and resin. The materials are different in material, and it is not preferable in terms of performance of the ski to simply bond them firmly with an adhesive. In other words, the ski is repeatedly subjected to bending stress during sliding,
This stress acts greatly between different materials. Therefore, the ski must be able to withstand this stress sufficiently and accurately. Therefore, conventionally, a thin rubber sheet is sandwiched and bonded between these metal parts and the components of the ski. This rubber sheet absorbs the stress acting between the two.

[0004]

The rubber sheet which absorbs the stress between the constituent members as described above is widely used in skis using metal parts. Then, in the edge part, a rubber sheet is attached in advance to the surface to be joined to the sliding surface member, and in the metal reinforcing plate, the rubber sheets are attached to both sides, and then the component member and the metal part are joined together with an adhesive. The problem is the adhesiveness between the rubber sheet and the other constituent members. That is, in general, in the molding of rubber products, as a compounding material, in addition to a vulcanizing agent, a vulcanization accelerator, and various fillers, stearic acid, myristin are added in order to prevent adhesion to a kneading roll or improve mold release properties. Higher fatty acids such as acids, or lipid components such as glycerides thereof are added. Although the molding processability is improved by this, the rubber sheet after the molding process contains a higher fatty acid or a lipid component, and the higher fatty acid or the lipid component repels the primer or the adhesive. However, there is a problem in that a sufficient bonding strength cannot be obtained. Therefore, conventionally, a rubber sheet is subjected to an acid treatment to remove higher fatty acids or lipids, thereby improving the adhesiveness.
However, even if the above-mentioned acid treatment is performed, the higher fatty acid or lipid content in the rubber sheet cannot be removed, and the higher fatty acid or lipid content in the rubber sheet oozes out to the interface over time, destroying the adhesiveness of the adhesive. There is a problem of doing. Next, in the method of forming the rubber sheet in advance and pasting it as described above, the thickness of the rubber sheet is 0.15 m after molding.
There is a limit of about m, and it is difficult to manufacture a thinner film. It is preferable that the rubber sheet is thin in order to improve response characteristics when used in a ski.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a method for producing a composite material in which a rubber layer intervenes which can obtain sufficient adhesive strength. It is in.

[0006]

The present invention has the following constitution in order to achieve the above object. That is, a rubber liquid obtained by dissolving a rubber compound containing a vulcanizing agent, a vulcanization accelerator and other fillers in a solvent without containing higher fatty acids and lipids is applied to the surface of a base material such as a metal plate or an FRP plate. And a step of placing the base material coated with the rubber liquid in a drying oven to dry the rubber liquid and vulcanize it, and another resin material on the base material via the vulcanized rubber layer, And a step of adhering a metal material or the like. The thickness of the rubber layer can be about 0.05 mm.

[0007]

Since the rubber layer does not contain higher fatty acids and lipids, it is possible to obtain a composite material having good adhesiveness between the rubber layer and the plate without performing acid treatment or the like. Moreover, since the rubber layer is formed by coating, the rubber layer can be formed as thin as possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. First, adjust the rubber liquid. Raw rubber, a vulcanizing agent, a vulcanization accelerator, and various fillers are mixed and directly dissolved in a solvent to prepare a rubber liquid. At that time, it is a condition that the higher fatty acid and the lipid are not included as a compounding agent. If higher fatty acids and lipids are not contained in this way, it will be easier to adhere to the kneading rolls, so without using rolls, the raw rubber and various compounding agents are directly added and dissolved in an organic solvent to dissolve them uniformly. It is better to mix in. The viscosity of the rubber liquid may be adjusted so that the rubber liquid can be applied. The compounding ratio of the raw material rubber, the vulcanizing agent, the vulcanization accelerator, and the various fillers is not particularly limited as long as it is vulcanized to obtain a predetermined strength.

Then, a primer is first applied to the surface of the base material 10 such as a ski reinforcing plate to form a primer layer 12, and then the above rubber liquid is applied onto the primer layer 12 to form a rubber layer 14. (Fig. 1). Rubber layer 14
Since it is formed by applying a rubber liquid, it can be made as thin as possible, and can be easily made as thin as about 0.05 mm. The rubber liquid can be applied by a spray method, a roll coater method, a dipping method or the like. Next, the base material 10 coated with the rubber liquid is dried and vulcanized in a drying oven.
The drying temperature is gradually increased to prevent the solvent from firing,
The final vulcanization temperature is raised to around 150 ° C. As a result, the rubber layer 14 having good adhesion is formed on the surface of the base material 10.

Next, the plate body 1 to be bonded to the base material 10
6. Apply the primer to the wooden core of the ski,
Then, the base material 10 and the plate body 16 are bonded to each other with an epoxy adhesive 18, for example. In the case of skis, this bonding is performed by heating and pressing (Fig. 2). In the case of the present embodiment, since the rubber layer 14 does not contain higher fatty acids and lipids, it is possible to obtain a composite material having good adhesion between the rubber layer 14 and the plate body 16 without performing acid treatment or the like. it can.

FIG. 3 shows a ski 2 manufactured by the above method.
Indicates 0. 21 is an edge part, 22 is a sliding surface member, 2
3, 24 are metal reinforcing plates, 25 is an upper surface material, and 26 is a core material. In the embodiment, the front and back surfaces of the metal reinforcing plates 23 and 24,
Also, a rubber layer (not shown) is formed on the outer surface of the edge component 21 in the same manner as described above, and an adhesive is used to adhere to an adjacent member via the rubber layer. Sufficient adhesive strength between the members was obtained.

Although the present invention has been variously described with reference to the preferred embodiments, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0013]

EFFECTS OF THE INVENTION According to the present invention, since the rubber layer does not contain higher fatty acids and lipids, it is possible to perform treatment without acid treatment.
A composite material having good adhesion between the rubber layer and the plate can be obtained. Moreover, since the rubber layer is formed by coating, the rubber layer can be formed as thin as possible.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which a primer layer and a rubber layer are formed on a base material.

FIG. 2 is an explanatory diagram showing a composite material in which a base material and a plate body are bonded together.

FIG. 3 is a sectional view of a ski.

[Explanation of symbols]

 10 Base Material 12 Primer Layer 14 Rubber Layer 16 Plate 18 Adhesive

Claims (2)

[Claims] 1. A base material, such as a metal plate or FRP plate, containing a rubber liquid obtained by dissolving a rubber compound containing a vulcanizing agent, a vulcanization accelerator and other fillers, which does not contain higher fatty acids and lipids, in a solvent. A step of applying to the surface, a step of placing the base material coated with the rubber liquid in a drying oven to dry and vulcanize the rubber liquid, and a step of applying another material to the base material via the vulcanized rubber layer. And a step of adhering a resin material, a metal material, and the like. 2. The method for producing a composite material having a rubber layer interposed therein according to claim 1, wherein the thickness of the rubber layer is about 0.05 mm.