KR20240135433A - Manufacturing method of flooring materials to eliminate inter-floor noise in eco-friendly houses - Google Patents

Abstract

The present invention relates to a method for manufacturing a flooring material that can solve noise problems between floors of a house by bonding PE foam having a cushioning function to a decorative tile.
The first step is to apply liquid PUR (Poly Urethane hotmelt) adhesive (2) to the surface of PE foam (1);
A second step of winding the above liquid PUR (Poly Urethane hotmelt) adhesive (2) after drying;
The PE foam (5) coated with PUR (Poly Urethane hotmelt) adhesive is unwound from the coiled state, and a PVC sheet (8) including core powder, a printed paper (7), and transparent PVC (6) are sequentially laminated on top thereof, and the PUR (Poly Urethane hotmelt) adhesive (2) is laminated between the PE foam (5) and the PVC sheet (8) including core powder; the third step;
It is characterized by a fourth stage in which the flooring material is bonded at once without requiring a separate decorative sheet manufacturing process by passing between two rollers (9) located in the front in a laminated state as in the third stage.

Description

{Manufacturing method of flooring materials to eliminate inter-floor noise in eco-friendly houses}

The present invention relates to a method for manufacturing a flooring material that can solve noise problems between floors of a house by bonding PE foam having a cushioning function to a decorative tile.

Instead of using general adhesives to bond the decotile and PE foam, PUR (Poly Urethane Hotmelt) is used. The eco-friendly water-soluble liquid PUR is coated on the bottom of the PE foam using gravure printing, then dried and supplied.

The present invention relates to a method for manufacturing an eco-friendly flooring material for resolving noise between floors of a house, in which a PE foam coated with PUR is laminated with transparent PVC, printed paper, and PVC sheets including core stone powder and passed between heat-pressing rollers as a flooring material for construction.

In general, flooring materials such as deco tiles, wooden floors, or panels are used to finish and decorate the interior floors of buildings, apartments, or houses. Recently, in line with the wellness trend, flooring materials made of wood are being widely used considering natural friendliness and aesthetic elements.

Recently, flooring materials installed on indoor floor surfaces are divided into decorative tiles, wooden flooring, and wallpaper. Here, wooden flooring is made by processing solid wood or processed plywood into flooring boards as is. It has a good texture as a natural high-quality material and is excellent in indoor humidity control. In addition, if it becomes deformed, it can be restored to normal if the appropriate temperature and humidity are maintained. However, it is vulnerable to mold and bacterial growth, and scratches occur easily. In addition, since most of it is constructed using adhesives, it has the disadvantages of high construction costs and a lot of noise and cost in the event of demolition.

In addition, Decotile is widely used as flooring in general homes or offices because it has a relatively low construction cost and is resistant to surface scratches, even though it reproduces the texture of flooring by printing various patterns on PVC material. In order for the patterns printed on the surface to have an interior decoration effect, they are molded into various patterns by giving them the texture of natural marble or natural wood and carpet.

These conventional flooring materials are manufactured to a certain size and then attached to the indoor floor surface using adhesive. However, since the flooring materials are attached and installed using adhesive, there is a problem in that harmful substances are emitted from the adhesive, causing skin diseases, respiratory diseases, and other health problems for residents.

On the other hand, in the case of decorative tiles, there is a problem that they cause noise between apartment floors when used as flooring because of their poor shock absorption, and when used by bonding separate sound-absorbing materials, there is a problem that the construction cost is high and the work time is long.

Patent Document 1: Republic of Korea Patent Publication No. 2000-0038273 Patent Document 2: Republic of Korea Patent Publication No. 2013-0007220

The present invention is intended to solve the problems of the prior art,

The first purpose is to solve the noise problem between floors of a house by bonding PE foam with cushioning function to the decorative tiles, as it has good sound absorption, and to enable construction without adhesives as it does not lift off the floor and has good stability.

In addition, in the present invention, PE foam is bonded to the decorative tile, but instead of using a general adhesive, PUR (Poly Urethane Hotmelt) is used, making it environmentally friendly and not harmful to the human body.

The second purpose is to simplify the manufacturing process and shorten the manufacturing time by coating environmentally friendly water-soluble liquid PUR on the lower surface of PE foam using the gravure printing method, drying it, and supplying it, and then manufacturing the PE foam coated with PUR in this way by passing it between heat-compression rollers while being laminated with transparent PVC, printing paper, and PVC sheets containing core stone powder, thereby manufacturing it as an architectural flooring material.

In order to achieve the above-mentioned purpose, the present invention provides a method for manufacturing an eco-friendly flooring material for resolving noise between floors of a house;

The first step is to apply liquid PUR (Poly Urethane hotmelt) adhesive to the surface of PE foam;

A second step of winding the above liquid PUR (Poly Urethane hotmelt) adhesive after drying it;

The PE foam coated with PUR (Poly Urethane hotmelt) adhesive is unwound from a coiled state, and a PVC sheet containing core stone powder, printed paper, and transparent PVC are sequentially laminated on top of it, and the PUR (Poly Urethane hotmelt) adhesive is laminated between the PE foam and the PVC sheet containing core stone powder in the third step;

It is characterized by a fourth stage in which the flooring material is bonded at once without requiring a separate decorative sheet manufacturing process by passing between two rollers located in the front in a laminated state, as in the third stage.

In the first step, the PE foam in a coiled state is unwound and fed forward through a number of guide rollers to subject it to gravure printing of a liquid PUR (Poly Urethane hotmelt) adhesive. By passing between two rollers that are interlocked and rotate in a printing liquid tank in the middle, the liquid PUR (Poly Urethane hotmelt) adhesive can be coated on one surface of the PE foam.

The printing solution is filled with a liquid PUR (Poly Urethane hotmelt) adhesive, and among the two interlocking and rotating rollers, the lower one is immersed in the liquid PUR (Poly Urethane hotmelt) adhesive. Therefore, when the rollers contact and rotate, the hydrophilic PUR (Poly Urethane hotmelt) adhesive is supplied to the roller surfaces, and at this time, when the PE foam passes between the rollers, the liquid PUR (Poly Urethane hotmelt) adhesive can be thinly applied to one surface of the PE foam.

In the first and second stages, PE foam having liquid PUR (Poly Urethane hotmelt) adhesive applied to one surface is supplied forward by guide rollers, a dryer is arranged between the guide rollers to dry the liquid PUR (Poly Urethane hotmelt) adhesive for the first time, and the PE foam that has been dried for the first time is supplied forward by another guide roller, and a second dryer is arranged in front of it to completely dry the areas that were not dried in the first drying, and after the liquid PUR (Poly Urethane hotmelt) adhesive is firmly coated, it is wound up for the next operation.

In the fourth step, PE foam coated with PUR (Poly Urethane hotmelt) adhesive, transparent PVC, printed paper, and PVC sheet containing core stone powder are all laminated and bonded at once by high-temperature pressurization using a roller.

When drying the liquid PUR adhesive applied to the PE foam in the second stage, it should be dried in stages in the first and second drying ovens, and dried at a high temperature of 70 to 90°C for 8 to 15 minutes.

The environmentally friendly water-soluble liquid PUR adhesive is composed of 50 to 70 wt% polyol, 29 to 49 wt% isocyanate, and 1 to 5 wt% of other additives to increase environmental friendliness.

In the process of applying PUR adhesive to PE foam, laminating and supplying PVC sheets including transparent PVC, printing paper, and core stone powder, and then pressing them with a roller,

The press temperature is 120°C - 160°C, the press pressure is 4kg/ ^cm2 - 6kg/ ^cm2 , and the press time is 3 - 5 minutes.

The present invention relates to a method for manufacturing an eco-friendly flooring material for resolving noise between floors of a house.

By bonding PE foam with cushioning function to decorative tiles, the sound absorption is excellent, which can solve the noise problem between floors of a house. In addition, since it does not lift off the floor and has good stability, construction is possible without adhesive.

In addition, in the present invention, PE foam is bonded to the decorative tile, but instead of using a general adhesive, PUR (Poly Urethane Hotmelt) is used, making it environmentally friendly and not harmful to the human body.

By coating environmentally friendly water-soluble liquid PUR on the lower surface of PE foam using the gravure printing method, drying it, and supplying it, and by passing the PE foam coated with PUR between heat-pressing rollers while being laminated with transparent PVC, printing paper, and PVC sheets containing core stone powder, it is possible to manufacture an architectural flooring material, thereby simplifying the manufacturing process and shortening the manufacturing time.

Figure 1 is a process diagram showing the process of manufacturing PE foam coated with PUR adhesive in the method for manufacturing an eco-friendly flooring material for resolving noise between floors of a house according to the present invention.
Figure 2 is a flow chart for explaining the manufacturing process of the flooring material for resolving noise between eco-friendly house floors according to the present invention.
Figure 3 is a process diagram showing the process of completing the flooring by bonding the remaining parts to the PE foam coated with PUR adhesive in the manufacturing method of the flooring material for resolving noise between floors of an eco-friendly house according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. However, it should be understood that the scope of the present invention is not limited thereto.

In this specification, the present embodiments are provided so that the disclosure of the present invention is complete and so that a person skilled in the art will fully understand the scope of the invention, and the scope of the present invention is defined solely by the claims. Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described in order to avoid an ambiguity in the interpretation of the present invention.

The terms used herein are for the purpose of describing embodiments only and are not intended to limit the invention. In this specification, the singular also includes the plural unless specifically stated otherwise. In addition, the reference to a component or operation as "comprising (or, comprising)" does not exclude the presence or addition of one or more other components or operations.

Figure 1 is a process diagram showing the process of manufacturing PE foam coated with PUR adhesive in the method for manufacturing an eco-friendly flooring material for resolving noise between floors of a house according to the present invention.

Figure 2 is a flow chart for explaining the manufacturing process of the flooring material for resolving noise between eco-friendly house floors according to the present invention.

Figure 3 is a process diagram showing the process of completing the flooring by bonding the remaining parts to the PE foam coated with PUR adhesive in the manufacturing method of the flooring material for resolving noise between floors of an eco-friendly house according to the present invention.

First, according to Fig. 1, the manufacturing process of PE foam coated with PUR adhesive is a method of applying liquid PUR (Poly Urethane hotmelt) adhesive (2) to the surface of PE foam (1) using conventional gravure printing, and an environmentally friendly water-soluble liquid formulation that is harmless to the human body is used as the liquid PUR (Poly Urethane hotmelt) adhesive.

The above method involves gravure printing a liquid PUR (Poly Urethane hotmelt) adhesive (2) on one surface of a PE foam (1) and then passing the same through a dryer several times so that the liquid PUR (Poly Urethane hotmelt) adhesive is firmly coated on the surface of the PE foam (1). In the illustrated example, the PE foam (1) before being coated with the liquid PUR (Poly Urethane hotmelt) adhesive (2) and the PE foam (1) coated with the liquid PUR (Poly Urethane hotmelt) adhesive (2) are in a wound state.

In order to gravure print liquid PUR (Poly Urethane hotmelt) adhesive (2), the PE foam (1) in a coiled state is unwound and fed forward through a number of guide rollers. By passing between two rollers (3) that are interlocked and rotate in a printing liquid tank in the middle, the liquid PUR (Poly Urethane hotmelt) adhesive (2) is coated on one surface of the PE foam (1).

That is, the printing solution is filled with a liquid PUR (Poly Urethane hotmelt) adhesive (2), and among the two rollers (3) that rotate in engagement, the one located at the bottom is immersed in the liquid PUR (Poly Urethane hotmelt) adhesive (2). Therefore, when the rollers (3) rotate in contact with each other, the liquid PUR (Poly Urethane hotmelt) adhesive (2) is supplied to the roller surfaces, and at this time, the PE foam (1) passes between the rollers (3), so that the liquid PUR (Poly Urethane hotmelt) adhesive (2) can be thinly applied to one surface of the PE foam (1).

In this way, PE foam (1) with liquid PUR (Poly Urethane hotmelt) adhesive (2) applied to one surface is supplied forward by guide rollers, and a dryer (4) is placed between the guide rollers to initially dry the liquid PUR (Poly Urethane hotmelt) adhesive (2).

In this way, the PE foam (1) dried in the first stage is supplied forward by another guide roller, and a second dryer (4) is placed in front of it so that the portion that was not dried in the first stage is completely dried, and after the liquid PUR (Poly Urethane hotmelt) adhesive (2) is firmly coated, it is wound up for the next operation.

Figure 3 is a process diagram showing the process of completing the flooring by bonding the remaining parts to the PE foam coated with PUR adhesive in the manufacturing method of the flooring material for resolving noise between floors of an eco-friendly house according to the present invention.

In Fig. 1, PE foam (5) coated with PUR (Poly Urethane hotmelt) adhesive is unwound from a coiled state and supplied in a laminated state with transparent PVC (6), printing paper (7), and PVC sheet (8) including stone powder for core. Since a roller (9) that rotates while interlocking is arranged in front of it, the flooring material is formed at once by applying high temperature and pressure.

Originally, a decorative sheet is made by laminating and bonding transparent PVC (6), printing paper (7), and PVC sheet (8) containing stone powder for core. Therefore, PE foam (5) coated with PUR (Poly Urethane hotmelt) adhesive must be laminated and bonded to the decorative sheet manufactured in this manner.

Since flooring must be manufactured, a two-step manufacturing process is required, but in the present invention, PE foam (5) coated with PUR (Poly Urethane hotmelt) adhesive, transparent PVC (6), printing paper (7), and PVC sheet (8) including core stone powder are all laminated and bonded at once by high-temperature pressurization using a roller (9), so the manufacturing process is simple and there is also the effect of shortening the manufacturing time.

PUR adhesives are adhesives that require a chemical reaction by mixing two components. They solidify depending on the application temperature and have high strength and durability, and can bond to various materials. PUR adhesives generally do not contain organic solvents, so they are an environmentally friendly solution that does not contain chemical substances such as VOCs (volatile organic compounds).

PUR adhesives can be used when the application temperature is high, especially when the application temperature is over 100°C, because they can be used for products that are used at high temperatures or products that require high-temperature bonding during the manufacturing process.

PUR adhesives are durable and particularly resistant to moisture, making them suitable for use in products exposed to external factors, such as flooring, or in moist environments.

However, since PUR adhesives are highly reactive and require strict control in some manufacturing processes and require considerable drying time, it is very important to dry them step by step through primary and secondary dryers (4), and the conditions of drying time and drying temperature are very important.

When coating an environmentally friendly water-soluble liquid PUR adhesive (2) on PE foam (1), drying at a high temperature of 70 to 90°C for 8 to 15 minutes is generally appropriate. However, if the temperature is adjusted to a high level to dry more quickly, problems such as foaming or deformation of the PUR adhesive may occur, so the temperature and time should be adjusted appropriately to ensure that the PUR adhesive dries completely.

In addition, after coating, it is necessary to wait for sufficient time for the PE foam (1) and PUR adhesive (2) to be completely bonded, and only then can it be laminated with other materials to create a flooring material.

Eco-friendly water-soluble liquid PUR adhesives are different from general PUR adhesives in that they use solvents with improved environmental friendliness and safety. While general PUR adhesives contain VOCs (volatile organic compounds), which can cause environmental pollution, eco-friendly water-soluble liquid PUR adhesives are considered less burdensome to the environment.

Environmentally friendly water-soluble liquid PUR adhesives are manufactured using functional polymer resins that dissolve in water or alcohol solutions. These resins are more environmentally friendly than organic solvents and can reduce VOCs. They also maintain high adhesion and durability compared to general PUR adhesives. Therefore, environmentally friendly water-soluble liquid PUR adhesives can be used as an alternative to general PUR adhesives.

The components and composition ratio of environmentally friendly water-soluble liquid PUR adhesives may vary depending on the situation, but are generally composed of 1) functional polymer resin, 2) water or alcohol solution, and 3) hardeners such as acetyl chloride, vinyl chloride, polyol, and heteropolyisocyanate (MDI). The composition ratio may be adjusted depending on the situation, but the higher the ratio of functional polymer resin to water or alcohol solution, the higher the adhesive strength, and the greater the amount of hardener, the better the adhesive strength and durability.

The present invention is characterized by using a gravure printing method to apply an environmentally friendly water-soluble liquid PUR adhesive (2) to PE foam (1), and is carried out in the following steps.

1) Production in PE foam roll form: First, PE foam (1) is produced in roll form. At this time, the PE foam is produced with a certain thickness and width.

2) PUR adhesive manufacturing: PUR adhesive is manufactured. At this time, an environmentally friendly water-soluble liquid PUR adhesive (2) is manufactured and used.

3) Applying PUR adhesive: Apply PUR adhesive to the PE foam. At this time, the application is done using the gravure printing method. That is, the eco-friendly water-soluble liquid PUR adhesive is applied by applying it to a special roller while skimming over the PE foam. This way, the adhesive is evenly distributed at a certain thickness.

4) Drying: The PE foam to which the PUR adhesive has been applied is dried by passing through the first and second dryers. At this time, the PUR adhesive (2) adheres to the surface of the PE foam (1) and polymerizes, so that the adhesive is evenly distributed on the surface of the PE foam.

By applying PUR adhesive (2) to PE foam (1) and bonding it with other materials as shown in Fig. 3, it becomes environmentally friendly and has excellent adhesive strength.

The present invention is characterized by the components and composition ratio of an environmentally friendly water-soluble liquid PUR adhesive, which include the following:

1) Polyol: Polyol is the main component of adhesives and is selected as one with low environmental impact.

2) Isocyanate: Isocyanate is a hardener for adhesives and is selected because it has a low environmental impact.

3) Other additives that do not contain environmental hormones or toxic substances: These additives are used to increase environmental friendliness.

The present invention is characterized by using an environmentally friendly water-soluble liquid PUR adhesive having the following composition ratio.

Polyol: 50-70%

Isocyanate: 29-49%

Other additives: 1~5%

When the weight ratio of polyol is less than 50%, there is a problem of insufficient bonding, and when the weight ratio of isocyanate is less than 29%, there is a problem of insufficient durability. Therefore, it was confirmed that the above composition ratio range is the most desirable.

The process of bonding a decotile to a PE foam (1) coated with PUR adhesive is not to first bond the decotile and then bond it to the PE foam (1) coated with PUR adhesive,

The characteristic of this product is that the transparent PVC (6), printing paper (7), PVC sheet (8) including stone powder for the core, and PE foam (1) coated with PUR adhesive are sequentially laminated to form the flooring material at once by applying high temperature and pressure through a roller (9) that rotates in front of them.

At this time, transparent PVC (6), printing paper (7), PVC sheet (8) including core stone powder, and PE foam (1) coated with PUR adhesive are sequentially laminated and thermally pressed using a heated roller (9) or a heat plate. The temperature and pressure of the roller or heat plate are somewhat variable depending on the material and thickness of the decotile and PE foam, the type and amount of PUR adhesive, the mechanical equipment, etc. After the decotile and PE foam are completely adhered, pressure can be applied again using a PRESSURE ROLLER, etc. to finally adhere them.

Through this method, PE foam (5) coated with PUR adhesive and decorative tiles, i.e. transparent PVC (6), printed paper (7), and PVC sheet (8) containing stone powder for core are strongly bonded to each other, thereby manufacturing a flooring material that solves the noise problem between floors of a house.

In some cases, the flooring may be manufactured by bonding PE foam (5) coated with PUR adhesive to previously manufactured decotiles. The decotiles used here are materials used to decorate or protect surfaces, and are manufactured by the following process.

1) Selecting basic materials

First, you need to select the base material to be used for manufacturing the decorative tile. Representative plastic materials used are PVC, ABS, PET, etc. At this time, the base material requires pretreatment for surface treatment.

2) Decide on color and design

Next, you need to decide on the color and design of the decorative tile. To do this, you can use design software to design the pattern and color, or you can use an image scanner to scan the image and then digitally modify it to design it.

3) Printing and coating

After the design is decided, the design is printed using a method such as gravure printing, and then an appropriate coating material is coated on the printed base material to improve the durability and quality of the decorative tile.

4) Processing and inspection

The base material that has been coated is processed to make a decorative tile. The processing methods include cutting, pressing, forming, and rolling. Finally, the produced decorative tile is inspected to confirm its quality and performance, and then packaged and shipped.

The method of manufacturing Decotiles may vary depending on the manufacturer, materials, equipment, etc., and safety and environmental considerations must be taken into account during the manufacturing process.

Meanwhile, PE foam (1) is a type of foamed polyethylene and has excellent functions such as light weight and shock absorption, so it plays a very important role in the manufacture of flooring according to the present invention.

In the process of manufacturing flooring, as shown in Fig. 1, PUR adhesive (2) is applied to PE foam (1) using the gravure printing method. Since PUR (polyurethane) adhesive (2) has a very strong adhesive force and plays a role in fixing the PVC sheet (8) containing stone powder for the core and the PE foam (1), the PUR adhesive (2) must be evenly applied on the PE foam (1), and for this purpose, it is applied using a gravure printing roller (3).

When the PE foam (5) coated with PUR adhesive is prepared as shown in FIG. 1, transparent PVC (6), printing paper (7), a PVC sheet (8) including stone powder for a core, and the PE foam (5) coated with PUR adhesive are sequentially and laminated and supplied as shown in FIG. 3, but the PUR adhesive (2) in the PE foam (5) coated with PUR adhesive is arranged so that it faces the PVC sheet (8) including stone powder for a core, so that the PVC sheet (8) including stone powder for a core and the PE foam (5) are firmly bonded by the PUR adhesive (2) while passing through the roller (9) located in the front.

In this way, the flooring material according to the present invention is laminated and joined in sequence with a transparent PVC sheet (6), a printed paper (7), a PVC sheet (8) including core gravel, and a PE foam (5) coated with PUR adhesive. At this time, the core gravel serves to increase the strength and durability of the flooring material, and the PUR adhesive (2) firmly joins the PE foam (5) coated with PUR adhesive and the PVC sheet (8) including core gravel.

As shown in Fig. 3, a transparent PVC sheet (6), a printed paper (7), a PVC sheet (8) including core powder, and a PE foam (5) coated with PUR adhesive are sequentially laminated and passed between a pair of rollers (9) located in front thereof. The rollers (9) are rotated while interlocked with considerable pressure and heated to a high temperature, so that while passing through them, the PVC sheet (8) including core powder and the PE foam (5) coated with PUR adhesive, as well as the remaining transparent PVC sheet (6) and the printed paper (7) can be firmly bonded.

The manufactured flooring is then finished and may be packaged in rolls for easy installation.

In the present invention, a transparent PVC sheet (6), a printing paper (7), and a PVC sheet (8) including stone powder for a core perform the function of a decorative tile.

Transparent PVC sheet (6) is used as the upper layer and is characterized by a transparent appearance and gloss.

The printed paper (7) is used as an intermediate layer and can add design elements by applying various patterns and colors, and the PVC sheet (8) including stone powder for the core is used as a lower layer and plays a role in increasing the durability of the flooring.

In the present invention, these materials have a laminated structure, so they have strong durability and shock absorption function. In particular, the PE foam (1) bonded at the bottom has high friction, so that floor construction is easy without adhesive, and since it has good shock absorption function, it is very effective in solving noise between floors in a house.

Additionally, it is waterproof and fireproof, making it easy to clean and maintain, and it is non-slip, so it can be used safely in places with a lot of traffic or in humid environments.

Meanwhile, in the present invention, in the process of applying PUR adhesive (2) to PE foam (1), laminating and supplying transparent PVC (6), printing paper (7), and PVC sheet (8) including core stone powder, it is most important to use an appropriate press temperature and pressure.

When applying PUR adhesive (2) to PE foam (1), and then laminating and pressing transparent PVC (6), printing paper (7), and PVC sheet (8) including core stone powder, the following conditions must be used.

1) Press temperature: 120°C - 160°C

2) Press pressure: 4kg/cm ² - 6kg/cm ²

3) Press time: 3 - 5 minutes

However, in the actual manufacturing process, the press conditions may vary depending on the equipment, materials, laminated structure, etc. used, so the optimal conditions can be selected and used within the range of 1), 2), and 3) above.

As described above, the present invention relates to a method for manufacturing an eco-friendly flooring material for resolving noise between floors of a house. By bonding PE foam having a cushioning function to a decorative tile, the sound absorption is excellent, thereby resolving the noise problem between floors of a house. In addition, since it does not lift off the floor and has good stability, construction is possible without adhesive.

In addition, in the present invention, PE foam is bonded to the decorative tile, but instead of using a general adhesive, PUR (Poly Urethane Hotmelt) is used, making it environmentally friendly and not harmful to the human body.

By coating environmentally friendly water-soluble liquid PUR on the lower surface of PE foam using the gravure printing method, drying it, and supplying it, and by passing the PE foam coated with PUR between heat-pressing rollers while being laminated with transparent PVC, printing paper, and PVC sheets containing core stone powder, it is possible to manufacture an architectural flooring material, thereby simplifying the manufacturing process and shortening the manufacturing time.

Although the technical idea of the present invention has been specifically described in the preferred embodiments, it should be noted that the above-described embodiments are for the purpose of explanation and not limitation. It will be apparent to those skilled in the art that various modifications and variations are possible within the scope of the technical idea of the present invention, and therefore, it is natural that such modifications and variations fall within the scope of the appended claims.

Claims (8)

The first step is to apply liquid PUR (Poly Urethane hotmelt) adhesive (2) to the surface of PE foam (1);
A second step of winding the above liquid PUR (Poly Urethane hotmelt) adhesive (2) after drying;
The PE foam (5) coated with PUR (Poly Urethane hotmelt) adhesive is unwound from the coiled state, and a PVC sheet (8) including core powder, a printed paper (7), and transparent PVC (6) are sequentially laminated on top thereof, and the PUR (Poly Urethane hotmelt) adhesive (2) is laminated between the PE foam (5) and the PVC sheet (8) including core powder; the third step;
A method for manufacturing an eco-friendly flooring material for resolving noise between floors in a house, characterized in that it consists of a fourth step in which the flooring material is bonded at once without requiring a separate decorative sheet manufacturing process by passing it between two rollers (9) located in the front in a laminated state as in the third step.
In paragraph 1,
A method for manufacturing an eco-friendly flooring material for resolving noise between floors in a house, characterized in that in the first step, the PE foam (1) in the coiled state is unwound and supplied forward through a plurality of guide rollers to perform gravure printing of a liquid PUR (Poly Urethane hotmelt) adhesive (2), and the liquid PUR (Poly Urethane hotmelt) adhesive (2) is coated on one surface of the PE foam (1) by passing between two rollers (3) that are interlocked and rotate in a printing tank in the middle.
In the second paragraph,
A method for manufacturing an eco-friendly flooring material for resolving noise between floors in a house, characterized in that a printing solution is filled with a liquid PUR (Poly Urethane hotmelt) adhesive (2), and among the two rollers (3) that rotate while interlocking, the one located at the bottom is immersed in the liquid PUR (Poly Urethane hotmelt) adhesive (2), so that when the rollers (3) rotate while in contact, the eco-friendly PUR (Poly Urethane hotmelt) adhesive (2) is supplied to the roller surface, and at this time, the PE foam (1) passes between the rollers (3), so that the liquid PUR (Poly Urethane hotmelt) adhesive (2) is thinly applied to one surface of the PE foam (1).
In paragraph 1 or 2,
A method for manufacturing an eco-friendly flooring material for resolving noise between floors in a house, characterized in that in the first and second stages, PE foam (1) having liquid PUR (Poly Urethane hotmelt) adhesive (2) applied to one surface is supplied forward by guide rollers, a dryer (4) is arranged between the guide rollers to perform the primary drying of the liquid PUR (Poly Urethane hotmelt) adhesive (2), and the PE foam (1) that has been dried once is supplied forward by another guide roller, and a secondary dryer (4) is arranged in front of the dryer so that the portion that was not dried in the primary drying is completely dried, and after the liquid PUR (Poly Urethane hotmelt) adhesive (2) is firmly coated, it is wound up for the next operation.
In paragraph 1 or 2,
A method for manufacturing an eco-friendly flooring material for resolving noise between floors in a house, characterized in that in the fourth step, PE foam (5) coated with PUR (Poly Urethane hotmelt) adhesive, transparent PVC (6), printing paper (7), and PVC sheet (8) containing core stone powder are all laminated and bonded at once by high-temperature pressurization using a roller (9).
In paragraph 1 or 2,
A method for manufacturing an eco-friendly flooring material for resolving noise between floors in a house, characterized in that when drying the liquid PUR adhesive (2) applied to the PE foam (1) in the second step, it must be dried in stages in the first and second drying ovens (4) and dried at a high temperature of 70 to 90°C for 8 to 15 minutes.
In paragraph 1 or 2,
A method for manufacturing an eco-friendly flooring material for resolving noise between floors in a house, characterized in that the eco-friendly water-soluble liquid PUR adhesive (2) is composed of 50 to 70 wt% of polyol, 29 to 49 wt% of isocyanate, and 1 to 5 wt% of other additives to increase environmental friendliness.
In paragraph 1 or 2,
In the process of applying PUR adhesive (2) to PE foam (1), laminating and supplying transparent PVC (6), printing paper (7), and PVC sheet (8) including core stone powder, and then pressing with a roller (9),
A method for manufacturing an eco-friendly flooring material for resolving inter-floor noise in a house, characterized in that the press temperature is 120°C to 160°C, the press pressure is 4kg/ ^cm2 to 6kg/ ^cm2 , and the press time is 3 to 5 minutes.