JPS5938091B2 - Method for manufacturing sand german chipboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of continuously treating the ends of sandwich balls used as building materials such as wall materials and ceiling materials with the same surface material.

Conventionally, as a method for manufacturing a sandwich board having a decorative surface on at least one of the surface layer and the back layer and a foam layer such as urethane foam in the middle layer, a foam material is poured between the surface layer and the back layer. A method has been used to form a sandwich board by pressing the upper and lower layers together. However, when such a board is used as a wall material, the urethane foam intermediate layer is exposed at the end of the board, which is particularly aesthetically undesirable as a decorative material. The material was cut to the end dimensions and pasted together by hand. There were many operational difficulties in applying this decorative material to the side surfaces as a process on a conveyor line instead of manually. The present invention overcomes the drawbacks of the conventional method and provides a method for automatically applying a top layer (or back layer) decorative material to both sides of a sandwich board on a consistent conveyor line.

That is, the present invention provides a sandwich board in which a urethane foam layer is used as an intermediate layer and face materials are attached to both the top and bottom surfaces (c. (2) making incisions with a cutting machine from the top material side to the bottom material side of the board so that the remaining thickness is 5u or less and 2n or more; (2) pressing the incisions from the top with a press machine; slanting each side edge outward;
3) a step of removing only the upper surface material and the intermediate layer of the sloped part using a blower to expose the lower surface material by the thickness; (4) a step of forming a blade shape on the boundary between the exposed part and the board body; (5
) A step of applying an adhesive to the exposed portion; and (6) a step of bending the bottom material toward the exposed portion and crimping it to the side surface of the board body. The method involves continuous processing of terminals with the same surface material.

Hereinafter, the present invention will be explained in detail based on embodiments and with reference to the drawings.

FIG. 1 is a plan view showing a method of continuously processing the ends of a sanderch board based on the present invention with the same surface material,
FIGS. 2A and 2B are partial front sectional views of each step 1 of the process shown in FIG. 1.

A second sandwich board 1 has a surface material 2 made of a decorative material as a lower layer, a back material 3 to which a decorative material is attached and integrated as required as an upper layer, and a foamed layer of urethane foam as an intermediate layer 4. Cut to a predetermined length as shown in Figure 1. This sandwich board 1 is cut with a cutting machine 5 such as a knife, rotary blade, etc., at a position away from both ends by the thickness d of the board, so that the remaining thickness is 511 or less from the bottom of the intermediate layer 4.
1! As shown in FIG. 2, make a cut from the top surface 3 so that the length is greater than l. At the stage shown in FIG. 2, the incisions are pressed from the soil surface 3 by a presser 6 such as a presser roller to incline each side end 1a, 1a of the board outward. Next, in the step shown in FIG. 2, only the back material 3a and the foam layer 4a of the side edges are knocked off by a striking machine 7 such as a hammer to form an exposed portion 2a of the face material 2. The backing material 3a and the foam layer 4a can also be peeled off by other conventional means, such as a belt or the like. The exposed surface material portion 2a is restored to a horizontal position by a guide roller (not shown), and a blade shape is made at the boundary between the exposed surface material portion 2a and the board body 1 using the rotary blade 8 at the stage shown in FIG. . Next, an adhesive such as hot melt is applied to the exposed part 2a of the face material, and it is folded back toward the side surface of the board body using a guide roller (not shown), and at the stage shown in FIG. Crimp. Further, at the same time as the pressure bonding, heat is applied to dry and harden the adhesive. Since the sand german board thus obtained has a decorative surface on both end faces, it can be shipped as is, and the remaining two sides can also be finished, making it possible to reduce the manufacturing process from integrated production. matches the production speed and can be simplified.

As explained above, in the method of continuously processing the ends of the sandwich board of the present invention with the same surface material,
Make the cut when the remaining thickness from the bottom of the foam layer is 511 or less, 2
In order to stop the thickness of the board to be at least m1, even if there are variations in board thickness during the manufacturing process of the Sanderch board body, the bottom material will not be cut off, and the ends of the board will be removed by a blower. The intermediate foam layer is separated from the surface layer and does not remain on the exposed portion of the bottom material, and when the exposed portion of the bottom material is folded back as a side layer, a smooth surface can be obtained.

Furthermore, it goes without saying that the dimensions of the original sandwich board to be processed are increased by the processing dimensions.

[Brief explanation of the drawing]

Fig. 1 is a process diagram for carrying out the method of continuously processing the ends of the sanderch board with the same surface material according to the present invention, and Fig. 2 1~ are partial front cross sections at each stage 1~ of Fig. 1. It is a diagram. 1... Sandwich board, 2... Surface material, 3... Back material, 4... Foam layer,
5... Cutting machine, 6... Pressing machine, 7...
...Blow machine, 8...Rotary blade, 9...
·belt.

Claims (1)

[Claims] 1 In a sandwich board made of a urethane foam layer as an intermediate layer and face materials attached to both the top and bottom surfaces, (1
) Cut a cut from the top material side of the sandwich board to the bottom material side of the board so that the remaining thickness from the bottom of the foam layer is 5 mm or less and 2 mm or more at a position away from both ends of the sandwich board by the thickness of the board. (2) pressing the cut portion from the top with a pressing machine to tilt each side edge of the board outward; and (3) hitting only the top material and the middle layer of the sloped portion. (4) applying a blade shape to the boundary between the exposed part and the board body; (5) applying adhesive to the exposed part; (6) a step of bending the bottom surface agent toward the exposed portion and crimping it to the side surface of the board body;
A method for continuously processing the terminals of a sandwich board using the same surface material, the method comprising sequentially and continuously processing the terminals of a sandwich board using the same surface material.