KR930010204B1 - Plywood - Google Patents

Abstract

The first layer for the base board being formed by press-forming a mixture of briquette ashes and an aqueous adhesive onto a synthetic resin sponge sheet to be punched and dried; the second and the third layers being formed by joining two thin separate wooden plates with an aqueous adhesive to be layered on the first layer with an oil adhesive; and the fourth layer being formed by coating a transparent lacquer. The layered product is cut into proper unit pieces for uses.

Description

Floor plywood

1 is a block diagram of a synthetic resin pressing pin that is the first layer of the floor plywood of the present invention.

2 is a cross-sectional view of the flooring plywood of the present invention.

Figure 3 is a final perspective view of the unit floor plywood of the present invention.

* Explanation of symbols for main parts of the drawings

1: briquette material 2: aqueous adhesive

3: synthetic resin pressing plate

The present invention relates to a new flooring plywood and a method of manufacturing the same, which has a strong waterproof, moisture proof and corrosion resistance, and is easy to construct and has a beautiful overall color.

In general, the floor of a new building, such as a window paper (Hanji) three times or four times on the concrete floor, and then laminated on the floorboards (oil).

In addition, plywood (paper) is used instead of floorboards on the floor of a building, or PVC floorboards or the like are applied thereon.

However, since such widths and lengths of the conventional cardboard or plywood are constantly lengthened, they should be re-cut according to the place of use when using them. Because they can't, they can be replaced or overlaid with new cardboard or plywood, which increases the cost.

In addition, cold or moisture from the concrete floor may cause the cardboard or plywood to rot easily. It is very inconvenient that it takes more than 20 days from the product installation because the surface protection agent or polish (lacquer, etc.) should be coated on the sheet of cardboard, and even when using plywood instead of cardboard, the perfect adhesion between the concrete and the laminate is a common adhesive. As it is almost impossible to use nails, most of them are nailed and used, so the discomfort of the senses cannot be ignored.

The present invention has been completed with this in mind.

That is, the present invention has a purpose of the new flooring plywood and its manufacturing method that is waterproof, moisture-proof and corrosion resistance, easy to install, the overall color is very beautiful.

Hereinafter, the present invention will be described in detail with reference to the drawings.

In the floor plywood of the present invention, as shown in FIG. 1, a synthetic briquette (non-woven fabric) press plate (3) gelled with an aqueous adhesive (2), which is used as a thermal raw material and is disposed of as waste. The substrate obtained by press-punching into the first layer was used as the first layer (bottom layer), and the plywood of the second wooden layer and the third layer, respectively, was laminated thereon, and then lacquered as the fourth layer (top layer). The unit sheet of the four-layer structure (see FIG. 2) is finally joined by a predetermined size as shown in FIG. 3 in the form of a checkered tile.

The boards constituting the plywood of the second layer and the third layer in the floor plywood of the present invention are very thin thin plates having a thickness of about 0.08-0.15 mm, and the patterns of the upper and lower layers (the third layer and the second layer) are mutually different. Staggered or opposite forms are preferred.

In addition, a kind of adhesive with strong adhesive force is used between the first-layer synthetic resin pressing plate in the floor plywood of the present invention and the two-layer plank that is the lower layer of the plywood, and the other two-layer plank and the third-layer plank In general, a general aqueous adhesive is used for joining the joints of the unit plywoods when the unit plywoods are connected to each other to form a final product and between the floor plywood of the present invention as the final product and the concrete floor of the building.

Here, the adhesive used between the synthetic resin cotton pressing plate as the first layer and the plank as the second layer has the same form as the hardened drawings P and P films, and also serves to block rising air flow such as cold air or moisture from the concrete floor. In parallel.

The thickness of the floor plywood of the present invention is about 2-3mm, in particular it is desirable to have a thickness of 2.1mm in terms of sense, the size of the unit plywood is (40-50Cm) × (40-50Cm), especially 45 A size of 45 cm is preferable in view of practicality.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.

EXAMPLE

The finely ground briquette powder 0.721 was mixed and kneaded in 0.151 aqueous adhesive, and then punched onto a synthetic resin pressing plate (thickness 0.8 mm, size 90 x 90 cm). The thickened synthetic resin pressing pin was completely dried at room temperature to obtain a 1.2 mm thick press plate (substrate). Two sheets of commercially available thin boards (size 90 × 90 cm) with a thickness of 90 mm and 90 cm × 90 mm (90 × 90 cm) are bonded to each other with an aqueous adhesive and dried at room temperature. It was laminated again using Daeheung Chemical Co., Ltd. product. The thickness of the adhesive after drying was 0.3 mm. Five layers of lacquer were applied on the top board to form a transparent lacquer coat of about 0.4 mm and then dried to obtain a flooring plywood (size 90 × 90 cm) in which the board's original pattern protrudes through the transparent lacquer coat.

Then, finally, four unit plywood having a size of 45 × 45 cm was obtained by using a cutter.

Repeat this process three more times to make 12 more unit plywood, and then use the water-based adhesive to connect the 15 unit plywoods obtained above to each other, and then glue the water-based adhesive to the floor of concrete floor with a width of 1.35 × 2.25 cm. After being broken down and dried, compared with conventional flooring plywood, an elegant and beautiful interior atmosphere was created.

According to the manufacturing method of the floor plywood of the present invention as described above, in addition to the advantage of recycling industrial waste, a simple manufacturing method can obtain a very strong plywood, such as cold or moisture, there is an advantage that can be used immediately after construction.

In addition, in case of local blemishes or breakage, only the unit plywood of the corresponding part needs to be replaced, so the repair is very easy, and further, the benefit of cost reduction can be obtained.

Accordingly, the flooring plywood of the present invention is expected to be useful for indoor use, particularly for flooring.

Claims (2)

The briquette ash powder (1) is mixed with the aqueous adhesive (2), press punched with steel on the synthetic resin pressing plate (3), and then dried to form a first layer as a substrate, and two thin boards having different patterns are aqueous adhesives. Plywood obtained by adhering to the first layer was laminated on the first layer using an oil-based adhesive to form a second layer and a third layer, and finally, a four-layer structure was coated on the third layer board by applying a transparent lacquer coating as a fourth layer. Forming, and then cut by a predetermined size, the floor plywood, characterized in that the use of the cut unit plywood in contact with each other. The flooring plywood manufactured by the manufacturing method of Claim 1.