JPS6179479A - Production of ski board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for manufacturing skis with improved adhesion of surface decorative materials.

[Technical background of the invention and its problems] Conventionally, in this type of ski, as illustrated in FIG. Upper surface strength members such as FRP (fiber-reinforced plastics) 2) Each constituent member of the upper surface of the ski consisting of a top edge 3.3 and a surface decorative material 4,
It is well known to have a sandwich structure in which a lower surface strength member 5 such as FRP, sole edge 6.6, sliding surface material 7, and other ski lower surface members are laminated.

In order to manufacture such conventional skis, the first step is to laminate and integrate the upper and lower components of the ski in separate processes, place them vertically apart in a mold, and then place them in a mold. For example, a foamable synthetic resin liquid may be injected into the upper and lower gaps to integrate the entire core at the same time as the core 1 is molded, or as a second method, the core and both the upper and lower components of the ski may be molded under pressure. This is done by stacking and heat-pressing between press hot plates, and then curing the whole body at 161. After molding, the surface of the finished product (S4), that is, the surface of the surface decorative material 4, is marked with letters and letters. Printing of patterns etc.a
is being carried out.

However, in the above-mentioned conventional manufacturing means, in particular, the step of attaching the surface decorative material is such that in the first method, it is pasted on the upper surface strength member 2 in advance, or in the second method, it is Because it is laminated together with each component of
The surface of the surface decorative material is easily scratched and stained by hot pressing plates, and removing the scratches and dirt caused by sanding, etc. may change the constant thickness and affect the ski performance, or damage the ski surface from both ends in the width direction. The edges are curled up and the printing area becomes narrower.
In addition, the surface of the surface decorative material after molding becomes uneven depending on the ski arch bend, so it is not only difficult to screen print complicated letters and patterns on the arch bend surface, but also especially when the surface decorative material is ABS & In the case of thermoplastic synthetic resins such as fats and phenolic resins, the heat resistance is poor, so the arrangement of the reinforcing fiber bundles or the weave marks of the upper FRP strength member laminated on the back side becomes ridges or uneven patterns. It appears on the surface of the surface decorative material, and the coefficient of thermal expansion is relatively high in synthetic resins, so if it is bonded together with other components at a high temperature and then cooled, it will shrink and change dimensions, causing the ski to Various problems have arisen, such as the fact that it tends to affect the arch bend, making it difficult to design a predetermined arch bend.

[Purpose of the invention]

This invention was made under the above circumstances, and aims to provide a method for manufacturing skis that can prevent scratches and stains on the decorative surface material and increase the degree of freedom in design. It is.

[Summary of the invention]

In order to achieve the above object, the present invention is characterized by including the steps of molding a ski semi-molded product excluding the surface decorative material, and bonding the surface decorative material to the surface of the ski semi-molded product. That is.

[Embodiments of the invention]

The present invention will be explained below based on the embodiments shown in FIGS. 1 and 2. In the illustrated embodiment of the present invention, the same reference numerals are used for the parts where the arrangement of the components of the upper and lower surfaces of the conventional ski shown in FIG. 3 overlaps, and the explanation thereof will be omitted.

That is, in the present invention, as shown in FIG. 1, a ski semi-molded product 10 from which the surface decorative material 4 has been removed is molded in a separate process. The method of forming the semi-finished ski product 10 at this time is not particularly limited and can be used. On the other hand, a single surface decorative material 4
After printing desired characters, patterns, etc., on the surface of the substrate 0, preferably by screen printing, a transparent protective film 41 is further applied to the surface, if necessary. Next, the printed surface decorative material 4 is bonded to the surface of the ski semi-molded product 10 via an adhesive.

By the way, when contacting the ski semi-molded product 10 and the surface decorative material 4, an adhesive is used. using a 1-boxy resin, applying the epoxy resin adhesive to at least one of the back surface of the surface decorative material 4 or the surface of the ski semi-molded product 10,
Next, the center between the sole edges 6.6 on both sides of the ski in the width direction constituting the ski semi-molded product 10 is aligned with the center in the width direction of the surface decorative material 4, and the two are aligned with each other.
As illustrated in the figure, the roller 11 is not indicated by a solid line arrow, but is indicated by a step 4.
- Bonding is carried out while removing air bubbles by applying pressure from the center in the longitudinal direction to the rear end and front end, and after bonding, the surface decorative material 4 is trimmed to match the shape of the ski, and the ski is completed. The entire surface of the product is coated with a transparent coating.

In the examples of this invention, the transparent coating treatment on the entire surface was performed after pasting the ski semi-molded product and the surface decorative material. Finish trimming may be performed before the mating step, or finish trimming may be performed on a part of the ski semi-molded product at the same time as trimming the surface decorative material.

(Effects of the Invention) As explained above, according to the present invention, since the surface decorative material is configured so that it can be bonded after forming the main body, there is no need for heating and pressurizing during manufacturing as in the conventional method. It is possible to reliably prevent arch bent changes due to dimensional changes, scratches and dirt on the surface, and even unevenness in the structure of the reinforcing fibers in FRP to propagate through the decorative surface material and create raised patterns on the surface. In addition, there is no edge sag due to sanding to remove it, and since printing is performed on the surface of the flat surface decorative material before bonding, multiple characters and patterns can be easily screen printed in a wide variety of ways. , the degree of freedom in printing patterns and types is greater, and semi-finished skis can be molded without being influenced by the timing of pattern specifications, so the seasoning can be maintained for a long period of time after molding, and skis can be prevented from warping. It has excellent effects, such as being able to check and avoid it.

[Brief explanation of the drawing]

FIG. 1 is a partially enlarged explanatory diagram showing an embodiment of the ski manufacturing method according to the present invention, FIG. 2 is an explanatory diagram showing the process of bonding the ski semi-molded product and the surface decorative material, and FIG. FIG. 1 is a perspective cross-sectional view of a main part showing the structure of a conventional ski. 4... Surface decorative material, 10... Ski semi-molded product, a.
...Pattern printing. Figure 2

Claims (2)

[Claims] (1) A method for manufacturing a ski, comprising the steps of: molding a ski semi-molded product excluding the surface decorative material; and bonding the surface decorative material to the surface of the ski semi-molded product. (2) In the method for manufacturing skis according to claim 1, prior to the bonding step, on the surface of the surface decorative material,
A manufacturing method characterized by printing letters, patterns, etc. in advance.