JPS608944B2 - Manufacturing method for panels with core material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a core-filled panel filled with a spiral core material.

Spiral-shaped core material is made by winding a strip of core material into a spiral shape. Conventionally, panels filled with this core material first have multiple spiral-shaped core materials inside a frame material that frames the core material. The core material is packed together, and then a vinyl acetate adhesive is applied to the front and back sides of the frame village and both ends of the core material using an applicator roller.After that, the facing materials are placed on the front and back sides respectively and bonded under pressure. was manufacturing. However, in this method, roller application using a vinyl acetate adhesive is difficult to handle, including polishing, and requires a long time for applying pressure. The present invention has been made in view of these points, and its purpose is to provide a core material that simplifies the adhesive application process, requires short pressurizing time, and is easy to manufacture. To provide panel manufacturing methods. The present invention will be described in detail below with reference to the drawings. FIG. 1 shows the manufacturing process of the core material 1,
A thermoplastic adhesive such as polyester or nylon is hot applied to both end surfaces of a long belt-shaped core material 1 made of paper or plastic wound into a hoop shape, or a sheet-like adhesive is applied as shown in the example. A thermoplastic adhesive 3 is applied to form a hoop-shaped core material 1, as shown in FIG. d in the same figure by cutting it to an appropriate length.
Core material 1 in a spiral shape with curls shown in
Create.

On the other hand, the core material 2 for assembling the frame material 5 is made by applying thermoplastic adhesive 3 to the front and back surfaces of the plate material 6 as shown in FIG. Cut it into sticks. The core material 2 coated with the thermoplastic adhesive 3 and cold-cured is roughened to form a rectangular frame material 5 as shown in FIG. The coated spiral core material 1 is packed, and face materials 4 and 4 are stacked on the front and back surfaces, respectively, and heated and pressed. The facing material 4 may be any material such as plywood, steel plate, plastic plate, film sheet, etc. The core material 2 and the face material 4 and the core material 1 and the face material 4 are adhered by the thermoplastic adhesive 3 applied to the core material 2 and the core material 1. Although the pressing time depends on the material type of the face material 4, since the thermoplastic adhesive 3 is used, it takes less time than vinyl acetate adhesive, and the heating and pressing time is required from the time of creating the spiral core material 1. There is no need to apply adhesive until the molding stage, making the molding process easier. Core material 1
If it is paper, by applying the thermoplastic adhesive 3 while it is wound into a hoop shape, the thermoplastic adhesive 3 will penetrate into the core material 1 and the adjacent parts will be glued together, forming a spiral. However, in such a case, as shown in FIG. 4, the core material 1 and the separator paper 7 are simultaneously wound into a hoop shape, and the separator paper 7 is placed between the adjacent core materials 1. It is best to keep it in a safe place.

As a result, adhesion of the core material 1 at adjacent portions is prevented, and more thermoplastic adhesive 3 is applied to the end of the core material 1, improving adhesive strength when formed into a panel. In other words, the separator paper 7 prevents the thermoplastic adhesive 3 from penetrating between the core materials 1 for the same amount of application, and the thermoplastic adhesive 3 does not get on the separator paper 7. Accordingly, the core material 1 is coated with a large amount. As described above, in the present invention, a thermoplastic adhesive is applied in advance to the core material wound into a hoop shape before it is made into a spiral, and to the core material before it is assembled, Therefore, it is possible to set up a well-ordered and highly productive line without requiring an adhesive application step in subsequent steps, and the time required for heating and pressure molding is short, making it easy to manufacture. This produces the following effect.

[Brief explanation of drawings]

Fig. 1 a, b, c, d are perspective views showing the manufacturing process of the spiral core material, Fig. 2 a, b, c, d, e are perspective views showing the manufacturing process of the core material, Fig. 3 is an exploded perspective view of a panel containing a core material, and FIG. 4 is a perspective view of the core material in another manufacturing process, where 1 is a core material, 2 is a core material, 3 is a thermoplastic adhesive, 4 is Omenmura, 5 is a frame material, 6 is a board material, and 7 is a separator paper. fin l box 2nd figure traditional 3rd figure traditional 4 pith

Claims (1)

[Claims] 1. Thermoplastic adhesive is applied to the end surface of the core material wound into a hoop shape, and the core material is cut into appropriate lengths while the thermoplastic adhesive is in a cold hardened state to form a spiral shape. A core material is formed, a thermoplastic adhesive is applied to the front and back surfaces of the core material, and the core material is framed in a cold-cured state of the thermoplastic adhesive to form a frame material, and then the core material is placed inside the frame material. At the same time, face materials are placed on the front and back surfaces of the frame material, and the frame material and the face material and the core material and the face material are bonded by the thermoplastic adhesive. Manufacturing method for panels with core material. 2. The method for manufacturing a panel containing a core material according to claim 1, characterized in that the core material is wound in a hoop shape with a separator paper interposed therebetween.