KR200218981Y1 - PVC Flooring Laminated with Wood Sheet Reinforced with Glass Fiber Layer Impregnated with PVC Sol in the Form of Sandwitch - Google Patents

Abstract

The present invention relates to a veneer laminated vinyl chloride resin flooring material, characterized in that the glass fiber layer (11a, 11b) laminated in the sandwich form on the base layer 10 made of a vinyl chloride resin.

In addition, the present invention provides a balance layer 20 made of vinyl chloride resin on the bottom of the flooring material in which sandwiches of glass fiber layers 11a and 11b are sandwiched on top and bottom of the base layer 10 made of vinyl chloride resin. It is related with veneer laminated vinyl chloride resin flooring, characterized in that laminated in a cross at right angles to the (orientation).

The present invention is a sandwich layer of the glass fiber layers (11a, 11b) impregnated with a vinyl chloride resin sol above and below the base layer 10 of the vinyl chloride resin, or in addition to the sandwich-layer laminate balance layer made of vinyl chloride resin ( By stacking 20) crosswise at right angles to the direction of the base material layer 10, there is an effect of preventing the dimensional change and improving the curling, making it suitable for use on the ondol.

Description

PVC Flooring Laminated with Wood Sheet Reinforced with Glass Fiber Layer Impregnated with PVC Sol in the Form of Sandwitch}

The present invention relates to a veneer laminated vinyl chloride resin flooring material, characterized in that the glass fiber layer is laminated in the sandwich above and below the base layer made of vinyl chloride resin.

In addition, the present invention is characterized in that the polyvinyl chloride resin balance layer is laminated on the bottom of the flooring material having a glass fiber layer sandwiched above and below the base layer made of vinyl chloride resin so as to be perpendicular to the orientation of the base layer. It is related with veneer laminated vinyl chloride resin flooring.

In the case of the conventional veneer laminated vinyl chloride flooring material, the publication No. 1998-047176 can be seen that the title of the 'natural veneer vinyl chloride resin tile', which is shown on the substrate layer 10 as shown in FIG. In turn, the nonwoven fabric layer 14, the adhesive layer 12 ′, the veneer layer 13, and the surface coating layer 30 are laminated.

This veneer laminated vinyl chloride flooring has solved the deformation of the veneer by laminating at 180 ° C with a nonwoven layer 14 between the veneer layer 13 and the base layer 10 made of vinyl chloride resin. The veneer layer 13 shrinks and the base layer 10, which is a vinyl chloride resin layer, expands, and after lamination, the veneer layer 13 expands by moisture and the base layer 10 contracts by expansion. There was a problem that caused the distortion.

Accordingly, the present invention is a sandwich layer of the glass fiber layers (11a, 11b) impregnated with a vinyl chloride resin sol on the upper and lower base layer 10 of the vinyl chloride resin, or in addition to the sandwich-type laminate balance layer made of vinyl chloride resin ( 20 is to be laminated in a cross at right angles to the direction of the base layer 10 to solve the curling (curling) to balance the entire flooring material.

1 is a cross-sectional view of the veneer laminated vinyl chloride resin flooring according to the present invention.

Figure 2a is a manufacturing process of the flooring of Figure 1;

Figure 2b is another manufacturing process of the flooring of Figure 1;

Figure 3 is a cross-sectional view of another veneer laminated vinyl chloride resin flooring according to the present invention.

Figure 4a is a manufacturing process of the flooring of Figure 3;

Figure 4b is another manufacturing process of the flooring of Figure 3;

Figure 5 is a cross-sectional view of a conventional veneer laminated vinyl chloride resin flooring.

(Explanation of symbols for the main parts of the drawing)

10: base material layer 11a: glass fiber layer

11b glass fiber layer 12 adhesive layer

12 ': adhesive layer 13: veneer layer

14 nonwoven fabric layer 20 balance layer

30: surface coating layer 31: undercoat

32: middle layer 33: upper layer

1 is a cross-sectional view of a veneer laminated vinyl chloride resin flooring material in which a reinforcing glass fiber layer of the present invention is laminated in a sandwich form around a substrate layer, and glass impregnated with a vinyl chloride resin sol on the substrate layer 10 which is a vinyl chloride resin layer in turn. The fibrous layer 11a, the adhesive layer 12, the veneer layer 13, and the surface coating layer 30 which consists of the undercoat layer 31, the intermediate | middle layer 32, and the top coat layer 33 from below are laminated | stacked, and a base material layer (10) Shown below is a flooring structure in which a glass fiber layer 11b impregnated with a vinyl chloride resin sol is laminated.

The manufacturing process of the veneer laminated vinyl chloride resin flooring material of the present invention varies depending on the type of adhesive used for the adhesive layer 12, which will be described by dividing into FIG. 2A and FIG. 2B.

FIG. 2A is a manufacturing process diagram of the flooring material of FIG. 1, in which the adhesive used in the adhesive layer 12 is a urethane resin, the method comprising: manufacturing a base layer 10; Preparing glass fiber layers 11a and 11b impregnated with a vinyl chloride resin sol; Manufacturing the veneer layer 13; Forming an adhesive layer 12 on the glass fiber layer 11a; Laminating the glass fiber layer 11b, the base material layer 10, the glass fiber layer 11a and the veneer layer 13 on which the adhesive layer 12 is formed from below; Forming the undercoat 31; Forming the intermediate layer 32; Forming a top coat layer 33; The manufacturing process consists of cutting steps.

Looking at the manufacturing process in detail as follows.

First, the base material layer 10 used as a base material of a product is manufactured.

The base material layer 10 is 100 parts by weight of vinyl chloride resin having a degree of polymerization of 900-1300, 30-35 parts by weight of dioctylphthalate as a plasticizer, 400-500 parts by weight of calcium carbonate (specific gravity: 2.5-2.8) as an inorganic filler and a stabilizer. 5-10 parts by weight of barium stearate, kneaded sufficiently in a rolling roll at 160-190 ° C, rolled to a thickness of 2.0-3.0mm with a calender, and cut to a size of 920-1000mm and 920-1000mm. Two sheets of vinyl resin sheets are laminated and used in a cross so that the directions are perpendicular to each other.

At this time, the specific gravity of the base layer 10 to be 2.0-3.0 by adjusting the amount of the inorganic filler, accordingly the base layer 10 is the Korea Industrial Standard M 3802 (M 3802) (hereinafter referred to as 'KS M 3802') The change rate measured by heating, which is the dimensional stability test measured according to the method, has a change rate of 0.05%, thereby preventing thermal deformation during use of the finished product, thereby ensuring dimensional stability.

Next, glass fiber layers 11a and 11b impregnated with a vinyl chloride resin sol, which serve to give dimensional stability to the flooring of the present invention and improve curling, are manufactured.

This is made by making a glass fiber sheet, and then impregnating the glass fiber sheet with a vinyl chloride resin sol. In more detail, first, the glass fiber is made by cutting the glass fiber 촙 60-70 parts by weight, paper pulp 10-15 parts, After mixing 10-15 parts by weight of polyvinyl alcohol as a binder and 80-90 parts by weight of water as a solvent, papermaking is carried out as in the papermaking process to make a glass fiber sheet having a weight of 30-100 g / m 2.

Thereafter, the glass fiber sheets are immersed in the vinyl chloride resin sol so as to be 100-500% of the glass fiber sheet weight, thereby completing the glass fiber layers 11a and 11b impregnated with the vinyl chloride resin sol.

In this case, the vinyl chloride resin sol is mixed with a vinyl chloride paste resin having a polymerization degree of 1000-1700, 60-120 parts by weight of dioctylphthalate as a plasticizer, 0-160 parts by weight of calcium carbonate as an inorganic filler, and 5-10 parts by weight of barium stearate as a stabilizer. Is made.

The glass fiber layers 11a and 11b impregnated with this vinyl chloride sol have a change rate of 0.01-0.02% in the change rate measurement by heating, which is a dimensional stability test measured according to KS M 3802. Eliminate change and improve curling.

Next, the veneer layer 13 giving a natural appearance effect is produced.

Most of the veneers are North American veneers such as bark, maple, oak, hawthorn or birch, and European veneers such as beech. Among them, veneer is mainly used for floorboards.

Such veneer is processed to a certain size by a rotary slicer or slicer.

First, rotary slicing is a method of firstly removing wood from the surface of wood by cutting wood from the mountain area, then rotating it in a cylindrical shape using a rotary slicer, and cutting it into 0.3-0.6 mm thickness. This method is used when the diameter is large.

Secondly, slicing is a method of firstly cutting wood from the mountain area into 2 or 4 parts, and then using a slicer to cut into planes 0.3-0.6 mm thick. This is the way to use it.

The cut veneer is dried in a dry oven until the water content reaches 8-12%, and then it is wrapped in vinyl and imported into Korea.

Imported veneers have knots, which are defects of the veneers themselves, so be sure to cut them beforehand and use them. Also, since the width of imported veneers varies, cut them to a certain size and fit them. .

First, nine veneers having a thickness of 0.4 mm, a width of 102 mm, and a length of 920 mm were connected to each other in the horizontal direction, and then heat-bonded with a commercially available hot melt adhesive to obtain a thickness of 0.4 mm, a width of 918 mm, and a length of 920 mm. Make veneer with size.

The moisture content of the wood veneer made in this way is 8-12%, so that dry wood is used instead of wet to prevent the smooth adhesion due to the influence of moisture during adhesion.

Next, the glass fiber layer 11a includes an adhesive layer 12 to secure water resistance and heat resistance in order to prevent the interlayer peeling problem caused by temperature and humidity for the purpose of bonding the veneer layer 13 and the glass fiber layer 11a. Form on the top of the.

In this case, a linear urethane resin is used as the adhesive.

The linear urethane resin is a two-component type, which is produced by crosslinking a linear urethane resin, which is a reaction product of a polyether polyol and a polyisocyanate, and a polyisocyanate, which is a curing agent.

In the present invention, a mixture of 60-70 parts by weight of methyl ethyl ketone solution of 30-40% of linear urethane resin and 1 part by weight of polyisocyanate is added to the upper portion of the glass fiber layer 11a in an amount of 80-100 g per unit area (m 2). After application, the mixture was kept at 80-100 ° C. for 1.5-2 minutes, and then the remaining solvent was volatilized and semi-cured to form the adhesive layer 12.

Thereafter, the glass fiber layer 11b, the base material layer 10 on which two sheets of vinyl chloride resin sheet were placed in cross from the bottom, the glass fiber layer 11a and the veneer layer 13 to which the semi-cured adhesive layer 12 were applied, were applied from below. ), Followed by thermocompression bonding at a temperature of 100-150 ° C. at a pressure of 5-10 kg / cm 2 for 10-30 minutes, and simultaneously cooling for 10-30 minutes to completely cure.

Next, in order to fix and stabilize the wood fibers of the veneer layer 13, the surface coating layer consisting of a lower coat layer 31, a middle coat layer 32 and a top coat layer 33 from below on the top of the veneer layer 13 ( 30).

This is carried out in the same process as the general floorboard process in detail as follows.

First, by increasing the adhesion to the wood to stabilize the veneer, to form the undercoat 31 to increase the compatibility with the varnish (vanish) of the next process.

The undercoat 31 is evenly coated on the veneer layer 13 twice with a urethane acrylate resin varnish in a thickness of 10-20 μm using a roll coater, and then passes through an ultraviolet lamp in a conventional manner. It hardens and forms.

Next, the intermediate layer 32 is formed to fill the conduit hole still present in the veneer layer 13 to form a top coat layer.

The intermediate layer 32 is also formed by applying a urethane acrylate resin varnish evenly on the undercoat layer 31 to a thickness of 10-20 μm using a roll coater, and then passing and curing the ultraviolet lamp in a conventional manner.

Next, after polishing the surface of the intermediate layer 32 using the abrasive paper 220-320 to maintain the adhesion and the surface smoothness with the top coat layer, to form a top coat layer 33 for beautiful luster.

The top coat layer 33 is also formed by applying a urethane acrylate resin varnish evenly on the middle layer 32 to a thickness of about 10㎛ using a roll coater, and then passes through the UV lamp and cures in a conventional manner.

Thus, by forming the undercoat layer 31, the intermediate layer 32 and the top coat layer 33, the reason for forming the surface coating layer 30 in three processes is the surface coating layer 30 of the desired thickness by only one coating Not only can you get this, but you can't smooth the flooring surface.

After forming the surface coating layer 30, it is cut to a certain size to complete the veneer laminated vinyl chloride resin flooring glass fiber layer impregnated in the vinyl chloride resin sol of the present invention reinforced with a sandwich.

FIG. 2B is another manufacturing process diagram of the flooring material of FIG. 1, in which an adhesive used for the adhesive layer 12 is an epoxy resin, the method comprising: preparing a base layer 10; Preparing glass fiber layers 11a and 11b impregnated with a vinyl chloride resin sol; Laminating in order from the glass fiber layer 11b, the base material layer 10, and the glass fiber layer 11a from below; Manufacturing the veneer layer 13; Forming an adhesive layer 12 on the glass fiber layer 11a; Stacking the veneer layer 13 on top of the adhesive layer 12; Forming the undercoat 31; Forming the intermediate layer 32; Forming a top coat layer 33; The manufacturing process consists of cutting steps.

Looking at the manufacturing process in detail as follows.

First, the base material layer 10 used as a base material of a product is manufactured.

The base material layer 10 is 100 parts by weight of vinyl chloride resin having a degree of polymerization of 900-1300, 30-35 parts by weight of dioctylphthalate as a plasticizer, 400-500 parts by weight of calcium carbonate (specific gravity: 2.5-2.8) as an inorganic filler and a stabilizer. 5-10 parts by weight of barium stearate, kneaded sufficiently in a rolling roll at 160-190 ° C, rolled to a thickness of 2.0-3.0mm with a calender, and cut to a size of 920-1000mm and 920-1000mm. Two sheets of vinyl resin sheets are laminated and used in a cross so that the directions are perpendicular to each other.

At this time, the specific gravity of the base layer 10 to be 2.0-3.0 by adjusting the amount of the inorganic filler, accordingly the base layer 10 is the Korea Industrial Standard M 3802 (M 3802) (hereinafter referred to as 'KS M 3802') The change rate measured by heating, which is the dimensional stability test measured according to the method, has a change rate of 0.05%, thereby preventing thermal deformation during use of the finished product, thereby ensuring dimensional stability.

Next, glass fiber layers 11a and 11b impregnated with a vinyl chloride resin sol, which serve to give dimensional stability to the flooring of the present invention and improve curling, are manufactured.

This is made by making a glass fiber sheet, and then impregnating the glass fiber sheet with a vinyl chloride resin sol. In more detail, first, the glass fiber is made by cutting the glass fiber 촙 60-70 parts by weight, paper pulp 10-15 parts, After mixing 10-15 parts by weight of polyvinyl alcohol as a binder and 80-90 parts by weight of water as a solvent, papermaking is carried out as in the papermaking process to make a glass fiber sheet having a weight of 30-100 g / m 2.

Thereafter, the glass fiber sheets are immersed in the vinyl chloride resin sol so as to be 100-500% of the glass fiber sheet weight, thereby completing the glass fiber layers 11a and 11b impregnated with the vinyl chloride resin sol.

In this case, the vinyl chloride resin sol is mixed with a vinyl chloride paste resin having a polymerization degree of 1000-1700, 60-120 parts by weight of dioctylphthalate as a plasticizer, 0-160 parts by weight of calcium carbonate as an inorganic filler, and 5-10 parts by weight of barium stearate as a stabilizer. Is made.

The glass fiber layers 11a and 11b impregnated with this vinyl chloride sol have a change rate of 0.01-0.02% in the change rate measurement by heating, which is a dimensional stability test measured according to KS M 3802. It can secure and improve curling.

The above-described ones were placed in order from the bottom of the glass fiber layer 11b, the vinyl chloride resin sheet in the order of the base material layer 10 and the glass fiber layer 11a, which were placed in cross order, and then pressed at 100 °. After applying the heat of -150 ℃, it is thermocompressed for 10-30 minutes at a pressure of about 5-10kg / ㎠ and simultaneously cooled for 10-30 minutes to make a semi-finished product first.

Next, the veneer layer 13 giving a natural appearance effect is produced.

First, nine veneers having a thickness of 0.4 mm, a width of 102 mm, and a length of 920 mm were connected to each other in the horizontal direction, and then heat-bonded with a commercially available hot melt adhesive to obtain a thickness of 0.4 mm, a width of 918 mm, and a length of 920 mm. Make veneer with size.

The moisture content of the wood veneer made in this way is 8-12%, so that dry wood is used instead of wet to prevent the smooth adhesion due to the influence of moisture during adhesion.

Next, the glass fiber layer 11a includes an adhesive layer 12 to secure water resistance and heat resistance in order to prevent the interlayer peeling problem caused by temperature and humidity for the purpose of bonding the veneer layer 13 and the glass fiber layer 11a. Form on the top of the.

At this time, an epoxy resin of room temperature curing type is used as the adhesive.

As the epoxy resin, those of ordinary bisphenol A type are used.

That is, a conventional linear epoxy resin produced by reacting epichlorohydrin and bisphenol A is prepared by curing with an aliphatic amine, polyamide or polysulfide with a curing agent suitable for room temperature curing.

In the present invention, 1 part by weight of the curing agent is mixed with 1 part by weight of the epoxy resin on the line, and then 40-70 g per unit area (m 2) on the glass fiber layer 11a impregnated with the vinyl chloride resin sol on the first semi-finished product prepared above. The adhesive layer 12 is formed by semi-curing at 80-120 ° C. for 1-3 minutes after applying the amount of. At this time, since the epoxy resin does not contain a volatile substance, it is used less than 80-100 g / m 2, which is the coating amount of the urethane resin.

Thereafter, the previously prepared veneer layer 13 was placed on top of the adhesive layer 12, and then pressed at a temperature of 5-10 kg / cm 2 for 1-2 hours at room temperature, and 24-- at a temperature of 20-80 ° C. Leave for 48 hours to fully cure.

Next, in order to fix and stabilize the wood fibers of the veneer layer 13, the surface coating layer consisting of a lower coat layer 31, a middle coat layer 32 and a top coat layer 33 from below on the top of the veneer layer 13 ( 30).

This is carried out in the same process as the general floorboard process in detail as follows.

First, by increasing the adhesion to the wood to stabilize the veneer, to form the undercoat 31 to increase the compatibility with the varnish (vanish) of the next process.

The undercoat 31 is evenly coated on the veneer layer 13 twice with a urethane acrylate resin varnish in a thickness of 10-20 μm using a roll coater, and then passes through an ultraviolet lamp in a conventional manner. It hardens and forms.

Next, the intermediate layer 32 is formed to fill the conduit hole still present in the veneer layer 13 to form a top coat layer.

The intermediate layer 32 is also formed by applying a urethane acrylate resin varnish evenly on the undercoat layer 31 to a thickness of 10-20 μm using a roll coater, and then passing and curing the ultraviolet lamp in a conventional manner.

Next, after polishing the surface of the intermediate layer 32 using the abrasive paper 220-320 to maintain the adhesion and the surface smoothness with the top coat layer, to form a top coat layer 33 for beautiful luster.

The top coat layer 33 is also formed by applying a urethane acrylate resin varnish evenly on the middle layer 32 to a thickness of about 10㎛ using a roll coater, and then passes through the UV lamp and cures in a conventional manner.

Thus, by forming the undercoat layer 31, the intermediate layer 32 and the top coat layer 33, the reason for forming the surface coating layer 30 in three processes is the surface coating layer 30 of the desired thickness by only one coating Not only can you get this, but you can't smooth the flooring surface.

After forming the surface coating layer 30, it is cut to a certain size to complete the veneer laminated vinyl chloride resin flooring glass fiber layer impregnated in the vinyl chloride resin sol of the present invention reinforced with a sandwich.

FIG. 3 is a veneer laminated vinyl chloride resin flooring material in which a reinforcing glass fiber layer of the present invention is laminated with a balance layer made of vinyl chloride resin in a cross-section at right angles to the direction of the base material layer in the bottom of the flooring material laminated in a sandwich form around the base material layer. As a cross-sectional view, the glass fiber layer 11a, the adhesive layer 12, the veneer layer 13, the undercoat layer 31, and the intermediate | middle layer from below were impregnated with the vinyl chloride resin sol in order on the base material layer 10 which is a vinyl chloride resin layer. The surface coating layer 30 which consists of the 32 and the top coat layer 33 is laminated | stacked, and the glass fiber layer 11b impregnated with the vinyl chloride resin sol in order under the base material layer 10, and the balance layer which consists of vinyl chloride resins ( 20) shows the flooring of the laminated structure.

The manufacturing process of the veneer laminated vinyl chloride resin flooring material of the present invention is different depending on the type of adhesive used for the adhesive layer 12, which will be described by dividing into Figures 4a and 4b.

4A is a manufacturing process diagram of the flooring material of FIG. 3, in which the adhesive used in the adhesive layer 12 is a urethane resin, the step of manufacturing the base layer 10 and the balance layer 20; Preparing glass fiber layers 11a and 11b impregnated with a vinyl chloride resin sol; Manufacturing the veneer layer 13; Forming an adhesive layer 12 on the glass fiber layer 11a; Laminating the balance layer 20, the glass fiber layer 11b, the base material layer 10, the glass fiber layer 11a and the veneer layer 13 in which the adhesive bond layer 12 was formed from below; Forming the undercoat 31; Forming the intermediate layer 32; Forming a top coat layer 33; The manufacturing process consists of cutting steps.

Looking at the manufacturing process in detail as follows.

First, the base material layer 10 used as a base material of a product is manufactured.

The base material layer 10 is 100 parts by weight of vinyl chloride resin having a degree of polymerization of 900-1300, 30-35 parts by weight of dioctylphthalate as a plasticizer, 400-500 parts by weight of calcium carbonate (specific gravity: 2.5-2.8) as an inorganic filler and a stabilizer. 5-10 parts by weight of barium stearate is added, kneaded sufficiently in a rolling roll at 160-190 ° C, rolled to a thickness of 2.0-3.0 mm with a calender, and cut to a size of 920-1000 mm and 920-1000 mm to cut vinyl chloride. Make a resin sheet.

At this time, the specific gravity of the base layer 10 to be 2.0-3.0 by adjusting the amount of the inorganic filler, accordingly the base layer 10 is the Korea Industrial Standard M 3802 (M 3802) (hereinafter referred to as 'KS M 3802') The change rate measured by heating, which is the dimensional stability test measured according to the method, has a change rate of 0.05%, thereby preventing thermal deformation during use of the finished product, thereby ensuring dimensional stability.

Next, a balance layer 20 made of vinyl chloride resin is prepared.

The balance layer 20 includes 100 parts by weight of a vinyl chloride resin having a degree of polymerization of 900-1300, 30-35 parts by weight of dioctylphthalate as a plasticizer, 400-500 parts by weight of calcium carbonate (specific gravity: 2.5-2.8) as an inorganic filler and a stabilizer. 5-10 parts by weight of barium stearate is added, kneaded sufficiently in a rolling roll at 160-190 ° C, rolled to a thickness of 2.0-3.0 mm with a calender, and cut to a size of 920-1000 mm and 920-1000 mm to cut vinyl chloride. Make a resin sheet.

At this time, the specific gravity of the balance layer 20 is adjusted to 2.0-3.0 by adjusting the amount of the inorganic filler. Accordingly, the balance layer 20 is Korean Industrial Standard M 3802 (M 3802) (hereinafter referred to as 'KS M 3802'). The change rate measured by heating, which is the dimensional stability test measured according to the method, has a change rate of 0.05%, thereby preventing thermal deformation during use of the finished product, thereby ensuring dimensional stability.

Next, glass fiber layers 11a and 11b impregnated with a vinyl chloride resin sol, which serve to give dimensional stability to the flooring of the present invention and improve curling, are manufactured.

This is made by making a glass fiber sheet, and then impregnating the glass fiber sheet with a vinyl chloride resin sol. In more detail, first, the glass fiber is made by cutting the glass fiber 촙 60-70 parts by weight, paper pulp 10-15 parts, After mixing 10-15 parts by weight of polyvinyl alcohol as a binder and 80-90 parts by weight of water as a solvent, papermaking is carried out as in the papermaking process to make a glass fiber sheet having a weight of 30-100 g / m 2.

Thereafter, the glass fiber sheets are immersed in the vinyl chloride resin sol so as to be 100-500% of the glass fiber sheet weight, thereby completing the glass fiber layers 11a and 11b impregnated with the vinyl chloride resin sol.

In this case, the vinyl chloride resin sol is mixed with a vinyl chloride paste resin having a polymerization degree of 1000-1700, 60-120 parts by weight of dioctylphthalate as a plasticizer, 0-160 parts by weight of calcium carbonate as an inorganic filler, and 5-10 parts by weight of barium stearate as a stabilizer. Is made.

The glass fiber layers 11a and 11b impregnated with this vinyl chloride sol have a change rate of 0.01-0.02% in the change rate measurement by heating, which is a dimensional stability test measured according to KS M 3802. Eliminate change and improve curling.

Next, the veneer layer 13 giving a natural appearance effect is produced.

Most of the veneers are North American veneers such as bark, maple, oak, hawthorn or birch, and European veneers such as beech. Among them, veneer is mainly used for floorboards.

Such veneer is processed to a certain size by a rotary slicer or slicer.

First, rotary slicing is a method of firstly removing wood from the surface of wood by cutting wood from the mountain area, then rotating it in a cylindrical shape using a rotary slicer, and cutting it into 0.3-0.6 mm thickness. This method is used when the diameter is large.

Secondly, slicing is a method of firstly cutting wood from the mountain area into 2 or 4 parts, and then using a slicer to cut into planes 0.3-0.6 mm thick. This is the way to use it.

The cut veneer is dried in a dry oven until the water content reaches 8-12%, and then it is wrapped in vinyl and imported into Korea.

Imported veneers have knots, which are defects of the veneers themselves, so be sure to cut them beforehand and use them. Also, since the width of imported veneers varies, cut them to a certain size and fit them. .

First, nine veneers having a thickness of 0.4 mm, a width of 102 mm, and a length of 920 mm were connected to each other in the horizontal direction, and then heat-bonded with a commercially available hot melt adhesive to obtain a thickness of 0.4 mm, a width of 918 mm, and a length of 920 mm. Make veneer with size.

The moisture content of the wood veneer made in this way is 8-12%, so that dry wood is used instead of wet to prevent the smooth adhesion due to the influence of moisture during adhesion.

Next, the glass fiber layer 11a includes an adhesive layer 12 to secure water resistance and heat resistance in order to prevent the interlayer peeling problem caused by temperature and humidity for the purpose of bonding the veneer layer 13 and the glass fiber layer 11a. Form on the top of the.

In this case, a linear urethane resin is used as the adhesive.

The linear urethane resin is a two-component type, which is produced by crosslinking a linear urethane resin, which is a reaction product of a polyether polyol and a polyisocyanate, and a polyisocyanate, which is a curing agent.

In the present invention, a mixture of 60-70 parts by weight of methyl ethyl ketone solution of 30-40% of linear urethane resin and 1 part by weight of polyisocyanate is added to the upper portion of the glass fiber layer 11a in an amount of 80-100 g per unit area (m 2). After application, the mixture was kept at 80-100 ° C. for 1.5-2 minutes, and then the remaining solvent was volatilized and semi-cured to form the adhesive layer 12.

Then, the balance layer 20, the glass fiber layer 11b, the base material layer 10, the glass fiber layer 11a and the veneer layer 13 to which the semi-cured adhesive layer 12 were applied are sequentially placed from the bottom. Then, using a press for 10-30 minutes thermocompression at a temperature of 5-10kg / ㎠ at a temperature of 100-150 ℃, and simultaneously cooled for 10-30 minutes to completely cure.

At this time, the balance layer 20 and the base layer 10 are laminated in a cross so that the direction is perpendicular to each other.

Next, in order to fix and stabilize the wood fibers of the veneer layer 13, the surface coating layer consisting of a lower coat layer 31, a middle coat layer 32 and a top coat layer 33 from below on the top of the veneer layer 13 ( 30).

This is carried out in the same process as the general floorboard process in detail as follows.

First, by increasing the adhesion to the wood to stabilize the veneer, to form the undercoat 31 to increase the compatibility with the varnish (vanish) of the next process.

The undercoat 31 is evenly coated on the veneer layer 13 twice with a urethane acrylate resin varnish in a thickness of 10-20 μm using a roll coater, and then passes through an ultraviolet lamp in a conventional manner. It hardens and forms.

Next, the intermediate layer 32 is formed to fill the conduit hole still present in the veneer layer 13 to form a top coat layer.

The intermediate layer 32 is also formed by applying a urethane acrylate resin varnish evenly on the undercoat layer 31 to a thickness of 10-20 μm using a roll coater, and then passing and curing the ultraviolet lamp in a conventional manner.

Next, after polishing the surface of the intermediate layer 32 using the abrasive paper 220-320 to maintain the adhesion and the surface smoothness with the top coat layer, to form a top coat layer 33 for beautiful luster.

The top coat layer 33 is also formed by applying a urethane acrylate resin varnish evenly on the middle layer 32 to a thickness of about 10㎛ using a roll coater, and then passes through the UV lamp and cures in a conventional manner.

Thus, by forming the undercoat layer 31, the intermediate layer 32 and the top coat layer 33, the reason for forming the surface coating layer 30 in three processes is the surface coating layer 30 of the desired thickness by only one coating Not only can you get this, but you can't smooth the flooring surface.

After the surface coating layer 30 is formed, the glass fiber layer impregnated with the vinyl chloride resin sol of the present invention is cut to a certain size and reinforced with a sandwich, so that the balance layer made of vinyl chloride resin is perpendicular to the direction of the base layer. Finished veneer laminated vinyl chloride resin flooring.

4B is another manufacturing process diagram of the flooring material of FIG. 3, in which an adhesive used for the adhesive layer 12 is an epoxy resin, the method comprising: preparing a base layer 10 and a balance layer 20; Preparing glass fiber layers 11a and 11b impregnated with a vinyl chloride resin sol; Laminating in order from the balance layer 20, the glass fiber layer 11b, the base material layer 10, and the glass fiber layer 11a from below; Manufacturing the veneer layer 13; Forming an adhesive layer 12 on the glass fiber layer 11a; Stacking the veneer layer 13 on top of the adhesive layer 12; Forming the undercoat layer 31; Forming the intermediate layer 32; Forming a top coat layer 33; The manufacturing process consists of cutting steps.

Looking at the manufacturing process in detail as follows.

First, the base material layer 10 used as a base material of a product is manufactured.

The base material layer 10 is 100 parts by weight of vinyl chloride resin having a degree of polymerization of 900-1300, 30-35 parts by weight of dioctylphthalate as a plasticizer, 400-500 parts by weight of calcium carbonate (specific gravity: 2.5-2.8) as an inorganic filler and a stabilizer. 5-10 parts by weight of barium stearate is added, kneaded sufficiently in a rolling roll at 160-190 ° C, rolled to a thickness of 2.0-3.0 mm with a calender, and cut to a size of 920-1000 mm and 920-1000 mm to cut vinyl chloride. Make a resin sheet.

At this time, the specific gravity of the base layer 10 to be 2.0-3.0 by adjusting the amount of the inorganic filler, accordingly the base layer 10 is the Korea Industrial Standard M 3802 (M 3802) (hereinafter referred to as 'KS M 3802') The change rate measured by heating, which is the dimensional stability test measured according to the method, has a change rate of 0.05%, thereby preventing thermal deformation during use of the finished product, thereby ensuring dimensional stability.

Next, a balance layer 20 made of vinyl chloride resin is prepared.

The balance layer 20 includes 100 parts by weight of a vinyl chloride resin having a degree of polymerization of 900-1300, 30-35 parts by weight of dioctylphthalate as a plasticizer, 400-500 parts by weight of calcium carbonate (specific gravity: 2.5-2.8) as an inorganic filler and a stabilizer. 5-10 parts by weight of barium stearate is added, kneaded sufficiently in a rolling roll at 160-190 ° C, rolled to a thickness of 2.0-3.0 mm with a calender, and cut to a size of 920-1000 mm and 920-1000 mm to cut vinyl chloride. Make a resin sheet.

At this time, the specific gravity of the balance layer 20 is adjusted to 2.0-3.0 by adjusting the amount of the inorganic filler. Accordingly, the balance layer 20 is Korean Industrial Standard M 3802 (M 3802) (hereinafter referred to as 'KS M 3802'). The change rate measured by heating, which is the dimensional stability test measured according to the method, has a change rate of 0.05%, thereby preventing thermal deformation during use of the finished product, thereby ensuring dimensional stability.

Next, glass fiber layers 11a and 11b impregnated with a vinyl chloride resin sol, which serve to give dimensional stability to the flooring of the present invention and improve curling, are manufactured.

This is made by making a glass fiber sheet, and then impregnating the glass fiber sheet with a vinyl chloride resin sol. In more detail, first, the glass fiber is made by cutting the glass fiber 촙 60-70 parts by weight, paper pulp 10-15 parts, After mixing 10-15 parts by weight of polyvinyl alcohol as a binder and 80-90 parts by weight of water as a solvent, papermaking is carried out as in the papermaking process to make a glass fiber sheet having a weight of 30-100 g / m 2.

Thereafter, the glass fiber sheets are immersed in the vinyl chloride resin sol so as to be 100-500% of the glass fiber sheet weight, thereby completing the glass fiber layers 11a and 11b impregnated with the vinyl chloride resin sol.

In this case, the vinyl chloride resin sol is mixed with a vinyl chloride paste resin having a polymerization degree of 1000-1700, 60-120 parts by weight of dioctylphthalate as a plasticizer, 0-160 parts by weight of calcium carbonate as an inorganic filler, and 5-10 parts by weight of barium stearate as a stabilizer. Is made.

The glass fiber layers 11a and 11b impregnated with this vinyl chloride sol have a change rate of 0.01-0.02% in the change rate measurement by heating, which is a dimensional stability test measured according to KS M 3802. It can secure and improve curling.

The above prepared products were placed in the order of the balance layer 20, the glass fiber layer 11b, the base material layer 10, and the glass fiber layer 11a in order from the bottom, and then heated at 100-150 ° C. using a press. After the addition of 10-10 minutes by thermocompression at a pressure of about 5-10kg / ㎠ and at the same time 10-30 minutes to make a semi-finished product first.

At this time, the balance layer 20 and the base layer 10 are laminated in a cross so that the direction is perpendicular to each other.

Next, the veneer layer 13 giving a natural appearance effect is produced.

First, nine veneers having a thickness of 0.4 mm, a width of 102 mm, and a length of 920 mm were connected to each other in the horizontal direction, and then heat-bonded with a commercially available hot melt adhesive to obtain a thickness of 0.4 mm, a width of 918 mm, and a length of 920 mm. Make veneer with size.

The moisture content of the wood veneer made in this way is 8-12%, so that dry wood is used instead of wet to prevent the smooth adhesion due to the influence of moisture during adhesion.

Next, the glass fiber layer 11a includes an adhesive layer 12 to secure water resistance and heat resistance in order to prevent the interlayer peeling problem caused by temperature and humidity for the purpose of bonding the veneer layer 13 and the glass fiber layer 11a. Form on the top of the.

At this time, an epoxy resin of room temperature curing type is used as the adhesive.

As the epoxy resin, those of ordinary bisphenol A type are used.

That is, a conventional linear epoxy resin produced by reacting epichlorohydrin and bisphenol A is prepared by curing with an aliphatic amine, polyamide or polysulfide with a curing agent suitable for room temperature curing.

In the present invention, 1 part by weight of the curing agent is mixed with 1 part by weight of the epoxy resin on the line, and then 40-70 g per unit area (m 2) on the glass fiber layer 11a impregnated with the vinyl chloride resin sol on the first semi-finished product prepared above. The adhesive layer 12 is formed by semi-curing at 80-120 ° C. for 1-3 minutes after applying the amount of. At this time, since the epoxy resin does not contain a volatile substance, it is used less than 80-100 g / m 2, which is the coating amount of the urethane resin.

Thereafter, the previously prepared veneer layer 13 was laminated on the adhesive layer 12, and then pressed at a temperature of 5-10 kg / cm 2 for 1-2 hours at room temperature, and 24-- at a temperature of 20-80 ° C. Leave for 48 hours to fully cure

Next, in order to fix and stabilize the wood fibers of the veneer layer 13, the surface coating layer consisting of a lower coat layer 31, a middle coat layer 32 and a top coat layer 33 from below on the top of the veneer layer 13 ( 30).

This is carried out in the same process as the general floorboard process in detail as follows.

First, by increasing the adhesion to the wood to stabilize the veneer, to form the undercoat 31 to increase the compatibility with the varnish (vanish) of the next process.

The undercoat 31 is evenly coated on the veneer layer 13 twice with a urethane acrylate resin varnish in a thickness of 10-20 μm using a roll coater, and then passes through an ultraviolet lamp in a conventional manner. It hardens and forms.

Next, the intermediate layer 32 is formed to fill the conduit hole still present in the veneer layer 13 to form a top coat layer.

The intermediate layer 32 is also formed by applying a urethane acrylate resin varnish evenly on the undercoat layer 31 to a thickness of 10-20 μm using a roll coater, and then passing and curing the ultraviolet lamp in a conventional manner.

Next, after polishing the surface of the intermediate layer 32 using the abrasive paper 220-320 to maintain the adhesion and the surface smoothness with the top coat layer, to form a top coat layer 33 for beautiful luster.

The top coat layer 33 is also formed by applying a urethane acrylate resin varnish evenly on the middle layer 32 to a thickness of about 10㎛ using a roll coater, and then passes through the UV lamp and cures in a conventional manner.

Thus, by forming the undercoat layer 31, the intermediate layer 32 and the top coat layer 33, the reason for forming the surface coating layer 30 in three processes is the surface coating layer 30 of the desired thickness by only one coating Not only can you get this, but you can't smooth the flooring surface.

After the surface coating layer 30 is formed, the glass fiber layer impregnated with the vinyl chloride resin sol of the present invention is cut to a certain size and reinforced with a sandwich, so that the balance layer made of vinyl chloride resin is perpendicular to the direction of the base layer. Finished veneer laminated vinyl chloride resin flooring.

Example 1

To make the base material layer 10, 34 parts by weight of dioctylphthalate, 450 parts by weight of calcium carbonate and 8 parts by weight of barium stearate were added to 100 parts by weight of a vinyl chloride resin having a degree of polymerization of 900 to 1000, in a rolling roll at 180 ° C. After sufficiently kneading, two sheets of vinyl chloride resin sheets were prepared, which were rolled to a thickness of 2.7 mm with a specific gravity of 2.1 and cut to a size of 950 mm in width and 950 mm in length.

Next, 70 parts by weight of glass fiber 만든 made by cutting glass fibers, 15 parts by weight of paper pulp, 10 parts by weight of polyvinyl alcohol, and 90 parts by weight of water were mixed, and then weighed by 45 g as a paper manufacturing method. / M 2, and then, the glass fiber sheet was mixed with 100 parts by weight of vinyl chloride paste resin having a degree of polymerization of 1200-1700 to 60 parts by weight of dioctylphthalate, 60 parts by weight of calcium carbonate and 8 parts by weight of barium stearate. The glass fiber layers 11a and 11b were prepared by impregnating 300% of the glass fiber sheet with respect to the prepared vinyl chloride resin sol.

Next, nine pieces of veneer having a thickness of 0.4 mm, a width of 102 mm, and a length of 920 mm were connected in the transverse direction, and then heat-bonded with a commercially available hot melt adhesive to obtain a thickness of 0.4 mm, a width of 918 mm, and a length of 920 mm. The veneer layer 13 having a size and a water content of 10% was prepared.

Next, a mixture of 60 parts by weight of a methyl ethyl ketone solution of 40% linear urethane resin, which is a reaction product of polyethylene ether glycol and methylene bis (phenyl isocyanate) (MDI), and 1 part by weight of polyisocyanate was mixed on the glass fiber layer 11a. After applying an amount of 100 g per unit area (m 2), the mixture was held at 90 ° C. for 1.5 minutes, and then the remaining solvent was volatilized and semi-cured to form an adhesive layer 12.

Thereafter, the glass fiber layer 11b, the base material layer 10 on which two sheets of vinyl chloride resin sheet were placed in cross from the bottom, the glass fiber layer 11a and the veneer layer 13 to which the semi-cured adhesive layer 12 were applied, were applied from below. ) And then thermocompressed for 25 minutes at a pressure of 7 kg / cm 2 at a temperature of 130 ° C. using a press, followed by cooling for 30 minutes to completely cure, and then an undercoat (31) on top of the veneer layer (13). ), The intermediate coating layer 32 and the top coat layer 33 were formed.

The undercoat layer 31 was formed by uniformly applying the urethane acrylate resin varnish on the veneer layer 13 twice in a thickness of 15 μm using a roll coater, and then passing and curing the UV lamp in a conventional manner.

The intermediate layer 32 was formed by uniformly applying the urethane acrylate resin varnish on the undercoat layer 31 to a thickness of 15 μm using a roll coater, and then passing through the ultraviolet lamp and curing in a conventional manner.

The top coat layer 33 is polished by using 320 abrasive papers, and then the urethane acrylate resin varnish is evenly applied on the middle coat layer 32 to a thickness of about 10 μm using a roll coater. Thereafter, the ultraviolet lamp was passed through the usual method and cured.

Finally, by cutting to a suitable size, the flooring of the present invention was completed.

Example 2

To make the base material layer 10, 34 parts by weight of dioctylphthalate, 450 parts by weight of calcium carbonate and 8 parts by weight of barium stearate were added to 100 parts by weight of a vinyl chloride resin having a degree of polymerization of 900 to 1000, in a rolling roll at 180 ° C. After sufficiently kneading, two sheets of vinyl chloride resin sheets were prepared, which were rolled to a thickness of 2.7 mm with a specific gravity of 2.1 and cut to a size of 950 mm in width and 950 mm in length.

Next, 70 parts by weight of glass fiber 만든 made by cutting glass fibers, 15 parts by weight of paper pulp, 15 parts by weight of polyvinyl alcohol, and 90 parts by weight of water were mixed, and then papermaking was carried out as in the papermaking process to weigh 45 g. / M 2, and then, the glass fiber sheet was mixed with 100 parts by weight of vinyl chloride paste resin having a degree of polymerization of 1200-1700 to 60 parts by weight of dioctylphthalate, 60 parts by weight of calcium carbonate and 8 parts by weight of barium stearate. The glass fiber layers 11a and 11b were prepared by impregnating 300% of the glass fiber sheet with respect to the prepared vinyl chloride resin sol.

The above-described ones were placed in order from the bottom of the glass fiber layer 11b, the vinyl chloride resin sheet in the order of the base material layer 10, and the glass fiber layer 11a, which were placed in a cross-section, and then press 150 DEG C. After applying heat, pressurize for 25 minutes at a pressure of about 10kg / ㎠ and simultaneously cool for 30 minutes to make semi-finished product first.

Next, nine pieces of veneer having a thickness of 0.4 mm, a width of 102 mm, and a length of 920 mm were connected in the transverse direction, and then heat-bonded with a commercially available hot melt adhesive to obtain a thickness of 0.4 mm, a width of 918 mm, and a length of 920 mm. The veneer layer 13 having a size and a water content of 10% was prepared.

Next, 1 part by weight of polysulfide, which is a curing agent, is mixed with 1 part by weight of a conventional linear epoxy resin produced by reacting epichlorohydrin and bisphenol A, and then on the primary semi-finished product impregnated with the vinyl chloride resin sol prepared above. 70 g per unit area (m 2) was applied to the glass fiber layer 11a impregnated with the polyvinyl chloride sol, and then semi-cured at 80 ° C. for 1.5 minutes to form an adhesive layer 12 and then the previously prepared veneer The layer 13 was placed on top of the adhesive layer 12, and then pressed at a pressure of 5 kg / cm < 2 > at room temperature for 1 hour and left at 80 DEG C for 24 hours to completely cure.

Then, the surface coating layer 30 which consists of the lower coat layer 31, the middle coat layer 32, and the upper coat layer 33 was formed in the upper part of the veneer layer 13. As shown in FIG.

The undercoat layer 31 was formed by uniformly applying the urethane acrylate resin varnish on the veneer layer 13 twice in a thickness of 15 μm using a roll coater, and then passing and curing the UV lamp in a conventional manner.

The intermediate layer 32 was formed by uniformly applying the urethane acrylate resin varnish on the undercoat layer 31 to a thickness of 15 μm using a roll coater, and then passing through the ultraviolet lamp and curing in a conventional manner.

The top coat layer 33 is polished by using 320 abrasive papers, and then the urethane acrylate resin varnish is evenly applied on the middle coat layer 32 to a thickness of about 10 μm using a roll coater. Thereafter, the ultraviolet lamp was passed through the usual method and cured.

Finally, by cutting to a suitable size, the flooring of the present invention was completed.

Example 3

34 parts by weight of dioctylphthalate, 450 parts by weight of calcium carbonate, and 8 parts by weight of barium stearate were added to 100 parts by weight of a vinyl chloride resin having a degree of polymerization of 900-1000, and kneaded sufficiently in a rolling roll at 180 ° C. Rolled to a thickness to prepare a base layer 10 of a vinyl chloride resin sheet with a specific gravity of 2.1 and cut to a size of 950mm horizontal and 950mm vertical.

34 parts by weight of dioctylphthalate, 450 parts by weight of calcium carbonate, and 8 parts by weight of barium stearate were added to 100 parts by weight of a vinyl chloride resin having a degree of polymerization of 900-1000, and kneaded sufficiently in a rolling roll at 180 ° C. A roll layer 20 having a specific gravity of 2.1 and a chlorine-vinyl chloride sheet cut to a size of 950 mm and 950 mm was prepared by rolling to a thickness.

Next, 70 parts by weight of glass fiber 만든 made by cutting glass fibers, 15 parts by weight of paper pulp, 10 parts by weight of polyvinyl alcohol, and 90 parts by weight of water were mixed, and then weighed by 45 g as a paper manufacturing method. / M 2, and then, the glass fiber sheet was mixed with 100 parts by weight of vinyl chloride paste resin having a degree of polymerization of 1200-1700 to 60 parts by weight of dioctylphthalate, 60 parts by weight of calcium carbonate and 8 parts by weight of barium stearate. The glass fiber layers 11a and 11b were prepared by impregnating 300% of the glass fiber sheet with respect to the prepared vinyl chloride resin sol.

Next, nine pieces of veneer having a thickness of 0.4 mm, a width of 102 mm, and a length of 920 mm were connected in the transverse direction, and then heat-bonded with a commercially available hot melt adhesive to obtain a thickness of 0.4 mm, a width of 918 mm, and a length of 920 mm. The veneer layer 13 having a size and a water content of 10% was prepared.

Next, a mixture of 60 parts by weight of a methyl ethyl ketone solution of 40% linear urethane resin, which is a reaction product of polyethylene ether glycol and methylene bis (phenyl isocyanate) (MDI), and 1 part by weight of polyisocyanate was mixed on the glass fiber layer 11a. After applying an amount of 100 g per unit area (m 2), the mixture was held at 90 ° C. for 1.5 minutes, and then the remaining solvent was volatilized and semi-cured to form an adhesive layer 12.

Then, the balance layer 20, the glass fiber layer 11b, the base material layer 10, the glass fiber layer 11a and the veneer layer 13 to which the semi-cured adhesive layer 12 were applied are sequentially placed from the bottom. However, the substrate layer 10 and the balance layer 20 are placed in a cross so that the orientations are perpendicular to each other, and then thermally press-bonded for 25 minutes at a pressure of 7 kg / cm 2 at a temperature of 130 ° C. using a press and simultaneously cooled for 30 minutes. After completely curing, a surface coating layer 30 consisting of a lower coat layer 31, a middle coat layer 32, and a top coat layer 33 was formed on the veneer layer 13.

The undercoat layer 31 was formed by uniformly applying the urethane acrylate resin varnish on the veneer layer 13 twice in a thickness of 15 μm using a roll coater, and then passing and curing the UV lamp in a conventional manner.

The intermediate layer 32 was formed by uniformly applying the urethane acrylate resin varnish on the undercoat layer 31 to a thickness of 15 μm using a roll coater, and then passing through the ultraviolet lamp and curing in a conventional manner.

The top coat layer 33 is polished by using 320 abrasive papers, and then the urethane acrylate resin varnish is evenly applied on the middle coat layer 32 to a thickness of about 10 μm using a roll coater. Thereafter, the ultraviolet lamp was passed through the usual method and cured.

Finally, by cutting to a suitable size, the flooring of the present invention was completed.

Example 4

34 parts by weight of dioctylphthalate, 450 parts by weight of calcium carbonate, and 8 parts by weight of barium stearate were added to 100 parts by weight of a vinyl chloride resin having a degree of polymerization of 900-1000, and kneaded sufficiently in a rolling roll at 180 ° C. Rolled to a thickness to prepare a base layer 10 of a vinyl chloride resin sheet with a specific gravity of 2.1 and cut to a size of 950mm horizontal and 950mm vertical.

34 parts by weight of dioctylphthalate, 450 parts by weight of calcium carbonate, and 8 parts by weight of barium stearate were added to 100 parts by weight of a vinyl chloride resin having a degree of polymerization of 900-1000, and kneaded sufficiently in a rolling roll at 180 ° C. A roll layer 20 having a specific gravity of 2.1 and a vinyl chloride resin sheet cut to a size of 950 mm and 950 mm was prepared by rolling to a thickness.

Next, 70 parts by weight of glass fiber 만든 made by cutting glass fibers, 15 parts by weight of paper pulp, 15 parts by weight of polyvinyl alcohol, and 90 parts by weight of water were mixed, and then papermaking was carried out as in the papermaking process to weigh 45 g. / M 2, and then, the glass fiber sheet was mixed with 100 parts by weight of vinyl chloride paste resin having a degree of polymerization of 1200-1700 to 60 parts by weight of dioctylphthalate, 60 parts by weight of calcium carbonate and 8 parts by weight of barium stearate. The glass fiber layers 11a and 11b were prepared by impregnating 300% of the glass fiber sheet with respect to the prepared vinyl chloride resin sol.

The ones prepared above are placed in the order of the balance layer 20, the glass fiber layer 11b, the base layer 10, and the glass fiber layer 11a in order from the bottom, and the base layer 10 and the balance layer 20 are The cross section was placed at right angles to each other, and then heated at 150 ° C. using a press, followed by thermocompression bonding at a pressure of about 10 kg / cm 2 for 25 minutes, and simultaneously cooling for 30 minutes to make a semi-finished product.

Next, nine pieces of veneer having a thickness of 0.4 mm, a width of 102 mm, and a length of 920 mm were connected in the transverse direction, and then heat-bonded with a commercially available hot melt adhesive to obtain a thickness of 0.4 mm, a width of 918 mm, and a length of 920 mm. The veneer layer 13 having a size and a water content of 10% was prepared.

Next, 1 part by weight of polysulfide, which is a curing agent, is mixed with 1 part by weight of a conventional linear epoxy resin produced by reacting epichlorohydrin and bisphenol A, and then impregnated with a vinyl chloride resin sol on the first semifinished product prepared above. Applying an amount of 70g per unit area (m 2) on top of one glass fiber layer (11a) and then semi-curing at 80 ° C. for 1.5 minutes to form an adhesive layer (12) and then the previously prepared veneer layer (13) to an adhesive layer After mounting on the upper part of (12), it crimped for 1 hour by the pressure of 5 kg / cm <2> at normal temperature, and left it to stand for 24 hours at 80 degreeC, and fully hardened.

Then, the surface coating layer 30 which consists of the lower coat layer 31, the middle coat layer 32, and the upper coat layer 33 was formed in the upper part of the veneer layer 13. As shown in FIG.

The undercoat layer 31 was formed by uniformly applying the urethane acrylate resin varnish on the veneer layer 13 twice in a thickness of 15 μm using a roll coater, and then passing and curing the UV lamp in a conventional manner.

The intermediate layer 32 was formed by uniformly applying the urethane acrylate resin varnish on the undercoat layer 31 to a thickness of 15 μm using a roll coater, and then passing through the ultraviolet lamp and curing in a conventional manner.

The top coat layer 33 is polished by using 320 abrasive papers, and then the urethane acrylate resin varnish is evenly applied on the middle coat layer 32 to a thickness of about 10 μm using a roll coater. Thereafter, the ultraviolet lamp was passed through the usual method and cured.

Finally, by cutting to a suitable size, the flooring of the present invention was completed.

The present invention is a sandwich layer of the glass fiber layers (11a, 11b) impregnated with a vinyl chloride resin sol above and below the base layer 10 of the vinyl chloride resin, or in addition to the sandwich-layer laminate balance layer made of vinyl chloride resin ( 20) is laminated in a cross at right angles to the orientation of the base layer 10 to prevent dimensional changes and to improve curling, making it suitable for use on ondol.

Table 1 below shows the effects of the present invention through experiments, and the flooring material of the present invention laminated the glass fiber layers (11a, 11b) impregnated with a vinyl chloride resin sol on the top and bottom of the base layer 10 in a sandwich form. (Hereinafter referred to as 'floor 1'), the flooring material (hereinafter referred to as 'floor 2') laminated with a glass fiber layer 11a impregnated with a vinyl chloride resin sol only on the base layer 10, the base layer 10 The bottom layer (hereinafter referred to as 'floor 3') laminated with a glass fiber layer not impregnated with a vinyl chloride resin sol on the top and bottom and a glass fiber layer not impregnated with a vinyl chloride resin sol only on the upper part of the base layer 10 It is the result of measuring the rate of change and the degree of curling by heating using the flooring material (hereinafter referred to as 'floor 4').

The rate of change by heating is in accordance with KS M 3802 and is measured after leaving each floor ash at 80 ± 2 (° C.) for 6 hours, taking it out, and leaving it at room temperature for about 1 hour. At this time, the rate of change of length should be less than -0.25%. (However, the minus sign indicates that it is reduced.)

The degree of curling is according to the self test method, and each floor is left at 80 ± 2 (℃) for 6 hours, taken out and left for about 1 hour at room temperature. The problem does not occur.

Property comparison table division Flooring 1 Flooring 2 Flooring 3 Flooring 4 Dimensional stability (% change due to heating) -0.10 -0.25 -0.35 -0.45 Curling Accuracy (mm) 1.5 or less 3.5 4.5 5.0

According to the measurement results of Table 1, 'floor 1', which is the flooring material of the present invention, had a dimensional stability due to heat with a change rate of -0.10%, and the degree of curling was considerably improved as the degree of curling was less than 1.5 mm. Able to know.

On the other hand, 'floor 2' using the glass fiber layer 11a impregnated with a vinyl chloride resin sol only on the upper portion of the base layer 10 had a change rate of -0.25% due to heating, and thus, some dimensional stability due to heat was secured. The accuracy is 3.5mm, which makes it unsuitable for ondol use.

In addition, 'floor 3' and 'floor 4' using glass fiber layers not impregnated with vinyl chloride resin sol have the performance of -0.35% and -0.45%, respectively. It can be seen that it is less than the standard value, and the degree of curling is 4.5mm and 5.0mm, respectively, and it is not suitable for use in ondol.

Claims (2)

Veneer laminated chloride formed by laminating a base fiber layer 11, a glass fiber layer 11a, an adhesive layer 12, a veneer layer 13, and a surface coating layer 30 impregnated with a vinyl chloride resin sol on the base layer 10 in order. In the vinyl resin flooring, veneer laminated vinyl chloride resin flooring, characterized in that the glass fiber layer (11b) impregnated with a vinyl chloride resin sol is laminated under the base layer (10). The veneer laminated chloride according to claim 1, wherein a balance layer (20) made of the same material as the base layer (10) is laminated under the glass fiber layer (11b) so as to be perpendicular to the direction of the base layer (10). Vinyl flooring.