KR100554838B1 - Wood flooring composed of WPL, base and soundproof layer - Google Patents

Abstract

The present invention relates to a Wood Veneer of High Pressure Resin Impregnation Laminates (hereinafter referred to as " WPL "), wherein a vinyl chloride resin layer (PVC; Polyvinyl Chloride), strand board (OSB) or high density fiberboard (HDF) or water resistant It relates to a back grooving reinforcement floorboard laminated on the plywood layer, which will be described in more detail from the bottom to the reinforcing layer 24, natural veneer layer 23, resin impregnation overlay layer 22 and surface UV coating layer ( A base layer (vinyl chloride resin layer, OSB or HDF or water-resistant plywood) having a back groove formed with an upper high-pressure resin-infused natural veneer layer 20 formed by stacking 21 therebetween with an adhesive layer 40 interposed therebetween (10). And a high pressure resin injection natural veneer layer 20, characterized in that it is configured to be laminated, and relates to a reinforced floorboard with a soundproof function added.

The reinforced floorboard laminated with the WPL of the present invention reinforces the surface of the natural veneer stucco ondol floorboard, and forms grooves on the back surface of the wood base layer 10, thereby improving surface strength compared to the existing floorboard. The sound insulation function was also provided by further laminating | stacking the sound insulation functional layer.

WPL (high pressure resin injection natural veneer), base material layer (vinyl chloride resin layer, OSB, HDF, waterproof plywood layer), back groove processing, sound insulation function layer

Description

Soundproofing reinforced floor laminated with natural veneer laminated with high pressure resin {Wood flooring composed of WPL, base and soundproof layer}

1 is a cross-sectional view of the conventional plywood onboard flooring laminated natural natural veneer,

Figure 2 is a cross-sectional view of the reinforced floor board laminated WPL and back surface processing substrate layer according to an embodiment of the present invention,

3 is a cross-sectional view of a reinforced ondol ridge plate in which the soundproof function layer is further laminated in FIG. 2 according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: base material layer (vinyl chloride resin layer or strand board or high-density fiber board or waterproofing board)

20: high pressure resin injection natural veneer

21: UV sole or prima UV coating layer

22: resin impregnated overlay layer

23: Natural pattern wood impregnated or not impregnated

24: substrate reinforcement layer (shielding paper or high density fiberboard or kraft paper)

30: first sound insulation layer

31: second sound insulation layer

40: adhesive layer

The present invention is a back groove formed by laminating a high-pressure resin-infused natural veneer (WPL) on a vinyl chloride layer or stranded board (OSB) or a high density fiberboard (HDF) or a water-resistant plywood layer. Regarding the reinforced ondol floorboard in more detail, the base reinforcing layer (shielding paper or high-density fiber board or kraft paper) 24, the resin impregnated or unimpregnated natural veneer layer 23, the resin impregnated overlay layer 22 and The upper high pressure resin infused natural veneer layer 20 formed by stacking the surface UV layer 21 is a grooved plastic vinyl chloride layer, HDF or OSB or a water-resistant plywood layer (substrate layer) with the adhesive layer 40 interposed therebetween. It is related with the base layer and WPL laminated lamination reinforced ondol floorboard characterized in that it is laminated and laminated.

As shown in the cross-sectional view of FIG. 1, the conventional untreated natural veneer laminated plywood ondol floorboard is coated with only UV or natural resin veneer, or the resin-impregnated plywood with the adhesive layer 40 interposed therebetween. It had a laminated structure with 10 '.

In addition, among the conventional techniques for surface reinforcement, the structure of laminating the melamine impregnated overlay sheet on the natural veneer has a limitation that the surface is stronger than the conventional floor which has been coated with UV, but the natural texture is inferior.

The brief description of each layer is as follows.

The water-resistant plywood layer 10 'was prepared by adhering 5-7 layers of end plates using a phenol resin or melamine resin adhesive so that the grain direction was orthogonal and pressed by a press.

The upper natural veneer was prepared by immersing the untreated or impregnated resin, or reducing the pressure and injecting the resin. The surface UV coating was prepared by treating the urethane acrylate-based paint 6 to 10 times with the coating, middle and top coats in a conventional manner.

The conventional plywood ondol flooring laminated natural natural veneer has an advantage of excellent dimensional stability against heat and moisture by using the water resistant plywood layer 10 '.

However, in the case of the conventional domestic plywood ondol floorboard laminated with the upper untreated natural veneer, the density of the natural veneer itself is low, so even if the surface UV coating, the scratch resistance on the surface was measured using diamond needles, and it was 0.5 ~ 1N. As a result of measuring the impact resistance by free fall, the value is about 10 ~ 20cm, which is a high possibility of dissatisfaction or claim due to the damage of the floor when users use the flooring with the living tools. Therefore, it has been a technical challenge to date.

At this time, the surface strength of veneer stucco ondol floor was cut to a certain size according to the general method of measuring the surface strength of ondol floor, and the scratch resistance at room temperature was measured by diamond needle method in 0.5N unit, and in case of impact resistance, 225g weight was used. After free fall by 10cm unit was determined by visually determining the damage of the surface.

Accordingly, the present invention is to solve the conventional problems as described above, through the Ondol floorboard surface high pressure resin injection natural veneer WPL technology to significantly improve the ondol floor surface strength of the prior art, the back groove processing to secure the natural texture The purpose is to provide a reinforced ondol floorboard.

Another object of the present invention is to provide a back groove reinforcement ondol floorboard with soundproof function added.

The present invention relates to a reinforced ondol floorboard in which a high-pressure resin-injected natural veneer layer and a back grooved vinyl chloride layer, OSB or HDF, or a water-resistant plywood are laminated, and from above, a general UV or prima treated UV coating layer (where general UV is The conventional method, and the pre-ima treatment UV coating method means to paint on the surface of the product impregnated with amino resin (urea, melamine, urea melamine resin), which is not processed by the existing method. In the reinforced ondol floorboard in which the resin-impregnated overlay layer, the resin-impregnated or non-impregnated natural veneer layer, the substrate reinforcement layer, and the substrate layer are laminated, the upper high pressure resin-injected natural veneer layer 20 is interposed between the adhesive layer 40. Laminated with a grooved substrate layer (vinyl chloride layer, strand board or high-density fibreboard or plywood) 10 It characterized.

The reinforced ondol floorboard of the present invention is further laminated with a soundproof function layer at one or more positions selected from (a) between the WPL and the base layer, and (b) below the base layer for the purpose of improving the interlayer noise and providing sound insulation. Can be.

WPL and strand board, high-density fiber board or water-resistant plywood laminate of the present invention is a method for producing a back grooving reinforced ondol floorboard is a strand or fiber cut or fiberized from wood urea resins, urea melamine resins, phenol resins, resorcinol Pressing and molding using a resin or MDI (4,4'-dimethyldiisocyanate) resin to prepare a strand board or a high density fiber board; Bonding 5 to 7 layers of single plates to each other using a phenol resin or melamine resin adhesive so that the grain direction is orthogonal to each other and pressing the sheet to form a water resistant plywood layer; Overlay with evenly distributed wear-resistant silica or alumina in cellulose resin, urea resin, urea melamine resin, melamine resin, phenol resin, acrylic resin, polyester resin, unsaturated polyester resin, epoxy resin, polyvinyl acetate resin, poly Preparing a surface protective paper layer (resin impregnation overlay layer) after impregnating one of vinyl alcohol resin and urethane resin; Manufacturing a natural veneer layer cut with a rotary lace and slicer from natural wood; Preparing a base reinforcing layer by impregnating kraft paper with a resol type phenolic resin or melamine resin; Manufacturing a high-density fiber board which is manufactured by pressing and molding a fiber made from wood by urea, melamine, urea melamine, and phenol resin; Manufacturing an upper WPL by placing a high density fiberboard or kraft paper impregnated or unimpregnated natural veneer and overlay paper from the bottom and then hot pressing at high temperature and high pressure; Forming an adhesive layer by applying one selected from melamine, polyurethane, and epoxy adhesive on top of the selected one of the OSB, HDF, and water resistant plywood, and then laminating the WPL at a high temperature and hot pressure; And UV coating alone or urethane-based UV treatment on the surface, and grooved on the back. Preferably, for the purpose of improving interlayer noise and providing sound insulation, (a) between WPL and wood substrate layers (OSB, HDF, one selected from domestic plywood), and (b) wood substrate layers (OSB, HDF). The method may further include laminating the sound insulation functional layer at one or more positions selected from the lower portion of the water-resistant plywood).

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and examples. However, the scope of the present invention is not limited by the accompanying drawings and examples.

FIG. 2 is a cross-sectional view of a backside groove-reinforced ondol floorboard having a surface coated with UV alone or a UV coated upper WPL after being treated on a substrate layer 10 according to an embodiment of the present invention. It has a structure laminated on top of the base material layer 10 with the adhesive layer 40 therebetween.

At this time, the upper WPL 20 is a resin impregnated or unimpregnated natural veneer layer 23, resin impregnated overlay paper layer 22 to one or more substrate reinforcement layer 24 selected from a shielding paper, or HDF, or kraft paper in order from the bottom ) And urethane-based special treatment UV layer or general UV layer (21).

According to the present invention after the high-pressure resin-injected natural veneer is described in detail with respect to each layer constituting the back grooved reinforced ondol floorboard laminated on the strand board or high-density fiberboard or water-resistant plywood layer 10, each layer is laminated to form a finished product Learn how to do it.

The vinyl chloride resin layer is characterized by consisting of PVC resin, plasticizer, filler, stabilizer, etc., and can be applied to manufacture thickness up to 1.0 ~ 5.0mm.

OSB and HDF are produced by pressing and molding strands and fibers cut or fiberized from wood using phenol resin or resorcinol resin or MDI resin, and the water-resistant plywood layer consists of 5 to 7 layers of phenol resin or melamine. It is manufactured by adhering the grain of wood grain orthogonally using a resin adhesive and pressing it with a press. It is suitable for ondol because it has very little dimensional change caused by heat and moisture.

Next, look at one for each layer constituting the upper WPL (20).

First, the UV coating for surface protection and high quality is treated 6 to 10 times, but the overlay layer impregnated with an amino resin (urea, urea melamine, melamine resin) is coated with a prima and then UV coated. .

Next, an overlay layer 22 for imparting surface properties such as wear resistance and scratch resistance is prepared.

The overlay layer 22 is 150 to 300% by weight of urea resin compared to the overlay paper (overlay paper) containing an even distribution of wear-resistant silica or alumina in a cellulose paper weighing 20 to 100 g / ㎡ Urea melamine resin, phenolic resin, acrylic resin, polyester resin, unsaturated polyester resin, epoxy resin, polyvinyl acetate resin, urethane resin selected and impregnated with one resin, and then 0.5 to 4 in an oven at 90 to 150 ° C. Dried and semi-hardened for a minute.

In this case, the overlay layer 22 has abrasion resistance of about 200 to 20,000 times when the abrasive layer is polished with abrasion paper.

Next, it is positioned below the overlay layer 22 to produce a natural veneer layer 23 cut from natural wood by creating a natural texture effect.

Natural veneer layer (23) is used to cut natural wood with a rotary racer, slicer to 0.3 ~ 5mm thickness, as necessary, to improve the water resistance and hardness, urea resin, urea melamine by immersion or decompression, injection method Impregnated with 30 to 150% by weight of natural veneer weighing by selecting one resin from among resin, melamine resin, phenol resin, acrylic resin, polyester resin, unsaturated polyester resin, epoxy resin, polyvinyl acetate resin and urethane resin After that, dried and semi-cured for 0.5 to 4 minutes in an oven at 80 to 150 ℃.

Next, the surface UV layer 21 and the overlay layer 22 are supported to be sheeted by WPL, and HDF and kraft paper base reinforcement layer 24 providing a thickness are manufactured.

HDF base reinforcing layer is obtained by obtaining fiber from wood coniferous and hardwood, and then selecting one of urea resin, urea melamine resin, melamine resin, phenol resin, and resorcinol resin to process 4 ~ 20% of fiber weighing, forming, high temperature It was hardened by hot pressing.

The kraft paper base reinforcing layer is impregnated with kraft paper having a weight of 80 to 300 g / m 2 selected from 40 to 150% by weight of melamine or phenol resin compared to the weight of kraft paper, and then dried in an oven at 80 to 150 ° C. for 0.5 to 3 minutes. And semi-cured. Kraft paper may use several sheets depending on its thickness.

Each layer of the upper WPL 20 manufactured as described above is shielded from below, a high-density fiberboard or kraft paper base reinforcing layer 24, a resin-impregnated or unimpregnated natural veneer layer 23, and a resin-impregnated overlay paper layer 22. After placing them in order, they were heated and pressurized for 15 to 60 minutes at a pressure of 20 to 100 kg / cm 2 at a temperature of 120 to 180 ° C. in a press, and then cooled for 15 to 30 minutes under the same pressure to provide an upper WPL. Complete 20.

Finally, the adhesive layer 40 which serves to bond the upper WPL 20 and the base layer 10 thus prepared is formed on the base layer 10.

The adhesive constituting the adhesive layer 40 uses a melamine resin for thermal curing and a room temperature-curable urethane or epoxy resin.

The thermosetting melamine resin is applied to the base layer 10, the coating amount of 80 to 300 g / ㎡ to form an adhesive layer 40, the room temperature curable urethane, or epoxy resin is applied to the base layer 10 After coating at 80 to 250 g / ㎡ to form an adhesive layer 40, the upper WPL (20) is placed in the case of heat curing type heat curing within 1 to 5 minutes at a pressure of 10 to 15 kgf / ㎠ and the curing is completed In the case of room temperature curing, the bonding is completed by pressing for 2 to 4 hours at a pressure of 10 to 15 kgf / cm 2 and drying at 80 ° C. for 2 hours.

As such, the base layer 10 and the upper WPL 20 may be compressed at room temperature to minimize deformation due to heat.

3 is a cross-sectional view of a reinforced ondol ridge plate in which the sound insulation functional layer is further laminated in FIG. 2 as another embodiment of the present invention. In FIG. 3, the first sound insulation layer 30 is laminated between the upper WPL 20 and the adhesive layer 40, and the second sound insulation layer 31 is laminated below the base layer 10. The position and number of are not particularly limited.

The material of the sound insulation layer is polyvinyl chloride (PVC) polyethylene (PE: polyethylene), ethylene vinyl acetate (EVA: Ethylene vinyl acetate), polypropylene (PP: Polypropylene), polyurethane (PU: Polyurethane), poly Polyester nonwoven fabric, chloroprene rubber (CR), acrylonitrile butadiene rubber (NBR), etc.Chemical crosslinking and foaming including embossing and embossing on the surface of the material It can be manufactured by a molding method and a method by pressure foaming.

1. Manufacture of vinyl chloride resin layer, strand board, high density fiber board, water resistant plywood layer (10)

The vinyl chloride resin layer was made of PVC resin, plasticizer, filler, stabilizer, and the like to manufacture a thickness of 1.0-5.0 mm.

Strandboard, high-density fibreboard is produced by pressing and molding strands and fibers cut or fibrized from wood using melamine resin, and the water-resistant plywood layer 10 uses 5 to 7 layers of melamine resin with wood grain direction. It was prepared by bonding orthogonally and pressing with a press.

2. Manufacture of upper WPL 20

1) UV coating layer 21 production

UV coating for surface protection and imparting a sense of quality was prepared 6 to 10 times, but the overlay layer impregnated with an amino resin (urea, urea melamine, melamine) was subjected to UV coating after the treatment of the prima.

2) Overlay Layer 22 Manufacturing

The overlay layer 21 is formed by impregnating overlay paper containing urea melamine resin, melamine resin, and acrylic resin with evenly distributed wear-resistant silica or alumina in cellulose paper having a weight of 20 to 100 g / m 2. Then, it was prepared by drying and semi-curing for 0.5 to 4 minutes in an oven of 90 to 150 ℃.

3) Manufacture of natural veneer (23)

Natural veneer layer 23 is used to cut natural wood with a rotary racer, slicer to 0.3 ~ 5mm thickness, polyester resin and melamine by immersion or decompression, injection method to improve the water resistance and hardness as needed After impregnating the resin, it was prepared by drying and semi-curing for 0.5 to 4 minutes in an oven at 80 to 150 ° C.

4) Manufacture of shielding paper, HDF, kraft paper base reinforcement layer 24

The overlay layer 22 and the natural veneer layer 23 were supported so that they could be sheeted into WPL, and a shielding paper, HDF or kraft paper base reinforcing layer 24 was provided as follows.

Shielding paper was prepared by impregnating a weighing 50-150 g / m 2 cellulose white paper with melamine resin, followed by drying and semi-curing for 0.5 to 3 minutes in an oven at 80 to 150 ℃. Multiple sheets of shielding paper may be used depending on the thickness.

High-density fiberboards were prepared by obtaining fibers from wood conifers and hardwoods, treating them with melamine resins, and then molding and curing them by high temperature, thermal pressure.

The kraft was prepared by impregnating kraft paper weighing 80 to 300 g / m 2 with melamine or phenol resin, respectively, and drying and semi-curing in an oven at 80 to 150 ° C. for 0.5 to 3 minutes. Kraft paper may use several sheets depending on its thickness.

5) Top WPL 20 Manufacturing

The layers 1) to 4) manufactured as described above were placed in the order of the base reinforcement layer 24 1 to 3 layers, the natural veneer layer 23, the overlay layer 22 and the surface UV coating layer 21 from below. After the press and heated and pressurized for 15, 20, 25, 30 minutes at a pressure of 20, 40, 60, 80, 100 kg / ㎠ at a temperature of 130 ~ 140 ℃, and then simultaneously cooled for 25 minutes under the same pressure to the upper WPL (20) was prepared.

3. After the adhesive layer 40 is formed on the base layer 10, the upper WPL (20) laminated

The thermosetting melamine resin is coated on the base material layer 10 at 150 g / m 2 to form an adhesive layer 40, and the room temperature curable urethane or epoxy resin is coated at 200 g / m 2 on an adhesive layer 40. ), The upper WPL (20) is placed and cured after 5 minutes of thermal pressure at a pressure of 12 kgf / ㎠ for a thermosetting type, and pressed for 2 hours at a pressure of 10 kgf / ㎠ for a room temperature curing type and 80 ℃ The adhesive was completed by drying for 2 hours.

Comparing the surface properties after the production of the reinforced ondol floorboard of the present invention prepared as described above and the conventional ondol floorboard (comparative example) as shown in Figure 1 as shown in Table 1 below.

At this time, the surface strength of the veneer stucco ondol floor was cut to a certain size according to the general method of measuring the surface strength of ondol floor, and the scratch resistance at room temperature was measured by diamond needle method in 0.5N unit, and in case of impact resistance, 225g weight was used. After free fall by 10cm unit was determined by visually determining the damage of the surface.

Example Comparative example Scratch resistance (N) 2 to 5 0.5 to 1 Impact resistance (cm) 30 to 80 10 to 20

As shown in Table 1, the reinforced ondol floorboard of the present invention has significantly improved the surface properties after manufacture compared to the conventional ondol floorboards, up to 5N for scratch resistance, and up to 80 cm for impact resistance, Through the WPL of natural veneer, the surface strength has been dramatically improved to a level that can significantly lower the possibility of claims.

The reinforced ondol floorboards laminated with the WPL of the present invention have improved scratch resistance than the conventional inventive copper veneer laminated ondol floors, and have improved impact resistance to 30 to 80 cm, and have an urethane-based overlay on an amino-based resin. The natural texture was dramatically improved through the development of the primer and UV coating technology, and the sound insulation function was also given by further laminating the sound insulation functional layer after construction.

Claims (6)

The high-pressure resin-injected natural veneer layer, the adhesive layer, and the backside grooved substrate layer (one selected from the vinyl chloride resin layer, the strand board, the high-density fiber board, and the water-resistant laminate) are laminated from the top, The high-pressure resin injection natural patterned wood layer is selected from the base reinforcing layer (high density fiberboard, resin-impregnated kraft paper, resin-impregnated shielded paper) from below, resin-impregnated or unimpregnated natural patterned wood layer, urea, urea melamine, melamine resin Reinforcing ondol floorboards, characterized in that the urethane-based coating on the resin-impregnated overlay layer impregnated with an amino-based resin, and laminated with a UV coating layer coated with UV thereon. delete The reinforced ondol floorboard of claim 1, wherein the resin impregnated shielding paper, the high density fiber board, or the resin impregnated kraft paper is used by alternately stacking several sheets according to thickness. delete The base material layer (vinyl chloride water) according to claim 1 or 3, wherein (a) a high-pressure resin-infused natural veneer wood layer and a base material layer (one selected from a vinyl chloride resin layer, OSB, HDF, and water-resistant plywood); Reinforced ondol floorboards, characterized in that the sound insulation layer is further laminated at one or more positions selected from the bottom of the ground layer, OSB, HDF, water-resistant plywood). The method of claim 5, wherein the material of the sound-proof functional layer is a vinyl chloride resin (PVC :) prepared by a method of chemically crosslinking and foaming and molding by including embossing, embossing on the surface of the material and molding Polyvinylchloride, polyethylene (PE: Polyethylene), ethylene vinyl acetate (EVA: Ethylene vinyl acetate), polypropylene (PP: Polypropylene), polyurethane (PU: Polyurethane), polyester nonwoven fabric, chloroprene rubber (CR: Chloroprene rubber) and acrylonitrile butadiene rubber (NBR).

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