JPS6220279Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a decorative member made by adhering arbitrary thin plate-like or sheet-like decorative materials such as decorative paper, PVC sheet, etc., called a decorative sheet, to a core material having an uneven or curved surface. The present invention relates to a pressure roller for pressure-bonding the decorative material, and further relates to a pressure roller that eliminates adhesion defects such as blistering due to defects such as slipping and slipping during pressure-bonding caused by uneven curved surfaces. It is.

For furniture parts, interior parts, building parts, fittings, etc., it is preferable to use solid wood made from sawn raw wood, but from the viewpoint of resource conservation and the fact that material prices will rise significantly, It's not realistic. For this reason, currently, in addition to solid wood, laminated wood, plywood, fiberboard, chipboard, aluminum plate, etc. are used as base materials. By laminating decorative materials onto these base materials, it is possible to add high value and save resources.

As a conventional technique, a decorative sheet having an adhesive layer on one side is supplied parallel to the moving direction of a core material having an uneven curved surface, a large number of pressure rollers are arranged at regular intervals in the moving direction of the core material, and a small There is a method of pressing the decorative sheet in stages by applying pressure to each area, but in this case, a very large number of pressure rolls are required.
It takes a considerable amount of time to set up.

In other words, the rollers had to be set in various positions depending on the order in which they were crimped along the surface shape of the core material, and the assembly and adjustment were extremely troublesome.

In order to solve the above problem, a pressure roller is used in which the pressure roller has the same curved surface as the uneven curved surface, but in this case, the pressure roller is perpendicular to the moving direction of the core material, Since it is sufficient to arrange them in parallel, the above-mentioned drawback has been solved. but,
Pressure rolls that have been processed to have the same curved surface as the uneven and curved surface of the core material will fit the uneven curved shape of the core material depending on the material, rubber hardness, etc., as well as the cutting accuracy of the core material, the core material feeding accuracy of the machine, etc. It is difficult to match, and it does not match precisely, causing parts to slip, damaging the decorative material, spinning, and causing poor adhesion such as blistering.
This is a fatal flaw for a pressure roller.

The object of this invention is to provide a pressure roller which overcomes the above-mentioned drawbacks of the prior art, and to explain it by way of an embodiment, in adhering a decorative material 3 to a core material 1 having a recess 2 as shown in Fig. 1, a corner 5 is provided at the tip of the pressure roller 4 used in contact with the corner of the recess, and the angle is made 5 to 10% smaller than the angle of the corner of the recess of the core material. This is the same for the shoulder part of the core material as shown in Fig. 2, and also when the angle of the corner of the recess is an obtuse angle as shown in Fig. 3 and Fig. 4. The pressure roller is supported on a common shaft which is perpendicular to the moving direction of the core material and parallel to the unevenness and curved surface of the core material, and the distance from the shaft to the unevenness and curved surface of the core material is taken as the radius.

If the core material has a curved surface 6, the shape of the tip of the pressure roller approximates the curved surface of the core material 1, as shown in Fig. 5, and a similar cross-sectional shape with a 5 to 10% smaller overall size is used. use

The material of the pressure roller is urethane-based, silicone-based, chloroprene-based rubber with a hardness of about 60 to 90 degrees, metal such as iron or aluminum, polyamide resin,
So-called engineering plastics such as polycarbonate are used.

By using the pressure roller of the present invention as described above, the following effects can be obtained.

The rollers press against the corners of recesses, which have conventionally been the cause of poor adhesion, resulting in perfect adhesion.

Enables more stable production and stable quality.

Adhesion reliability can be obtained, and highly reliable members can be supplied.

Production speed can be improved and costs can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
Figures 3 and 4 show the case where the core material has an uneven surface with acute angle corners, Figures 3 and 4 show the case where the corner of the recess is obtuse, and Figures 5 and 6 show the case where the core material has an uneven surface with acute angle corners. FIG. 7 shows cross-sectional views in the case of using a core material having a surface that is a combination of unevenness and a curved surface. 1... core material, 2... recess, 3... decorative material, 4...
...Pressure roller, 5...corner, 6...curved surface.

Claims (1)

[Scope of utility model registration request] In a pressure roller whose tip is processed into an arbitrary shape for pressing a decorative sheet onto a core material having an uneven surface or a curved surface, the unevenness and curved surface of the core material are perpendicular to the moving direction of the core material. A pressure roller is pivotally supported on a common shaft arranged in parallel, and the radius of the pressure roller is the distance from the shaft to the uneven or curved surface of the core material, and if the core material has an uneven surface, the radius of the pressure roller is Provide a corner at the tip of the part that contacts the uneven surface, and make the angle of the tip of the roll 5 to 10% smaller than the angle of the corner of the concave part of the core material, and if the core material is a curved surface, the radius is set to the curved surface of the core material. An uneven or curved surface of a core material, which is made smaller by 5 to 10% within a range that approximates the shape, and is processed so that the shape of the tip of the roll becomes an uneven surface or a curved surface that approximates the curved surface of the core material. A pressure roller that presses the decorative sheet onto the surface.