KR102138653B1 - Eco-friendly hemp floor paper and method for preparing thereof - Google Patents

Abstract

The present invention relates to a hemp fiber pad and a method for manufacturing the same, characterized in that it consists of only hemp fiber layer using a natural hemp material, and according to the present invention, by combining the hemp fiber pad consisting of only hemp fiber, which is a natural material, with an eco-friendly paste, hemp fiber It is a kind of board that eliminates the inconvenience of conventional flooring, is easier, faster, more durable and cheaper, and has excellent interior effects by making use of the excellent effects of ), and a floor material having excellent adhesion performance was manufactured using a close contact method rather than an overlapping method.
Therefore, by adding the advantages of durability, aesthetics, resilience, and semi-constitution, the hemp fiber flooring that has been passed down from the past was newly developed to suit not only the floors of hanoks, loess rooms, and general houses, but also apartments, resorts, and hotels. It has the effect of being able to construct in the same large complex.

Description

Eco-friendly hemp fiber flooring and manufacturing method thereof {ECO-FRIENDLY HEMP FLOOR PAPER AND METHOD FOR PREPARING THEREOF}

The present invention relates to an eco-friendly hemp fiber flooring and a method for manufacturing the same, and more particularly, to an eco-friendly hemp fiber flooring material in which a hemp fiber layer made of only hemp fiber materials is mixed with an eco-friendly paste, and a manufacturing method capable of manufacturing the same in a factory in a finished product form .

In general, in apartment construction, floors such as living rooms are constructed with a river floor and rooms are constructed with flooring. When residents move in, the previously constructed river floors and floorboards are removed and remodeled with other eco-friendly materials to move in. This is because the hardwood floor of the floor is not pure wood, and the adhesive that adheres to the floor is harmful to the human body. Most of the flooring is not an eco-friendly material, and the seams and edges of the floor must be bonded. These costs become unnecessary social costs.

As interest in eco-friendly products increases socially and environmentally, products using eco-friendly materials are widely used in construction flooring materials (parquet, floor, etc.).

For example, there are cases where a floor structure is plastered using loess, and then a general floor board or reinforced floor is installed. However, in this case, there is a problem in that the effect of loess is not exhibited because there is no function to breathe.

The applicant has been engaged in eco-friendly construction for a long time and constructed Korean paper flooring on the floor of a hanok or loess room, but the biggest drawback of the existing natural flooring such as Korean paper is that the process of laminating or laminating multiple layers is not strong, so that it falls off or separates. There is a phenomenon, and the coating of the finish layer only uses the conventional traditional method and does not improve the disadvantages of the traditional method. (Refer to Korean Patent Registration 10-0797619)

Therefore, it is required to develop a flooring material that is eco-friendly and has more durability than the existing Korean paper flooring.

Accordingly, there have been attempts to develop a floor covering using hemp as a raw material, which has been used by some from ancient times. Hemp (hemp) has been proven to have a very beneficial effect on the human body as a natural fabric with excellent antibacterial and anti-toxic properties since ancient times. However, the construction was difficult and the cost was high, so only a few people who could handle hemp professionally used it.

In addition, in the case of conventional burlap flooring, the entire process of pasting, cutting, dyeing and coating using hemp is not installed on the floor, so the work process takes a lot of time. Therefore, there is a problem that the construction cost is also set high accordingly.

Although hemp has excellent properties, construction is difficult and expensive, and its use is limited. Therefore, it can be said that the development of eco-friendly hemp flooring that improves these problems is necessary.

Korean Patent Registration No. 10-1302198 is a natural parquet flooring material that is easy to install and can reduce construction time, thus maximizing productivity by reducing costs, and a method of manufacturing the same. A natural surface material, a plate material, a cork layer, and a fiber layer are sequentially laminated. As the natural flooring material, any one or more natural fabrics selected from hemp, ramie, hemp and cotton fabrics are used as the fibrous layer.

However, in the above patent, it can be seen that the fibrous layer such as hemp is not used as the main raw material for the natural flooring material, but is intended to improve the impact characteristics of the flooring material in combination with the cork layer.

In addition, in Korean Patent Registration No. 10-1124751, the base material of the flooring material has been provided using PVC, PP or PE resin, and in consideration of the problem that these flooring materials release toxic substances or environmental hormones harmful to the human body, it is possible to use synthetic resins. A floor board for indoor/electric mats with a laminated structure by impregnating/coating a bast fiber selected from flax, jute, hemp, and hemp, which is a natural-friendly functional material with minimal raw materials, was proposed.

However, although the above patent also minimized the raw material of synthetic resin, it is to manufacture the flooring material by impregnating the bast fiber with synthetic resins such as PVC, PP, and PE in a sol state, so that harmful problems to the human body due to the use of synthetic resin still exist. There is a limit to satisfying the needs of current consumers who prefer flooring materials.

Korean Patent Registration 10-0797619 Korean Patent Registration 10-1302198 Korean Patent Registration 10-1124751

Accordingly, an object of the present invention is to solve the problems as in the prior art, and to provide an eco-friendly flooring material utilizing the advantages of natural materials such as hemp, which is a natural fabric having excellent antibacterial properties and anti-toxicity.

Hemp fiber flooring according to an embodiment of the present invention is characterized in that it is composed of only a hemp fiber layer using a natural hemp material.

It is preferable that the hemp fiber padding is made by combining each hemp fiber layer with an eco-friendly paste.

According to an embodiment of the present invention, the eco-friendly paste is preferably prepared by mixing starch paste or wheat flour paste and polyvinyl acetate (polyvinyl acetate, vinyl acetate resin) in a weight ratio of 2 to 2.5:1.

The hemp fiber layer may include an uppermost layer as a finish surface and a lower layer as a base surface, and may include an intermediate layer as necessary.

According to an embodiment of the present invention, the hemp fiber pad may have a board shape of 1.5 mm or more in thickness.

In addition, the method of manufacturing a hemp fiber flooring according to the present invention includes the steps of preparing a hemp of the top layer, the middle layer, and the bottom layer, dyeing the top layer, the middle layer, and the lower layer, and the top layer, the middle layer, and the lower layer are combined with an eco-friendly paste. The step of making a single-piece by making the integrated hemp fiber padding with a heat of 100 to 150°C once, first ironing, coating the hemp fiber padding, the hemp fiber padding with heat of 100 to 150°C once 2 It characterized in that it comprises the step of ironing the car, polishing the rough surface of the hemp fiber pad, and cutting the hemp fiber pad to a size suitable for use.

According to an embodiment of the present invention, the dyeing step may be dyeing twice using fresh ocher of 350 mesh or more.

According to an embodiment of the present invention, the coating step,

Primary coating of mixing about 0.01 to 0.1% by weight of selenium, a natural antibacterial agent, to starch paste or flour paste, and then coating once;

A secondary coating that is impregnated once or twice using a natural resin containing cardol or cardanol; And

It is preferably made of a tertiary coating that is coated twice using aqueous polyurethane (PU) or water-dispersible polyurethane (PolyUrethane Dispersions, PUD).

According to the present invention, by combining the hemp fiber sole made of only hemp fiber, which is a natural material, into an eco-friendly paste, the excellent effect of the hemp fiber is utilized to complement the disadvantages of the traditional method by combining the good of the traditional and modern science technology. By eliminating the discomfort of the flooring material, it is easier, faster, more durable and cheaper, and the interior effect is also excellent, and it is completed as a kind of board-like product, and a flooring material having excellent adhesion was manufactured using a close contact method rather than an overlapping method.

In addition, it has been newly developed by adding advantages such as durability, aesthetics, resilience, and semi-constitution to the hemp fiber flooring that has been passed down from the ancient times, and is suitable for apartments, resorts, and hotels, as well as the floors of hanoks, loess rooms, and general houses. It has the effect of being able to construct in the same large complex.

Figure 1 shows the structure of the hemp fiber long plate according to the present invention.
Figure 2 shows an example in which the hemp flooring according to the present invention is constructed.

Hereinafter, the present invention will be described in more detail as follows.

The terminology used herein is used to describe a specific embodiment and is not intended to limit the present invention.

As used herein, singular forms may include plural forms unless the context clearly indicates otherwise. Also, as used herein, "comprise" and/or "comprising" specifies the presence of the mentioned shapes, numbers, steps, actions, members, elements and/or groups thereof. And does not exclude the presence or addition of one or more other shapes, numbers, actions, members, elements and/or groups.

The present invention relates to an eco-friendly hemp fiber flooring and a method of manufacturing the same.

The eco-friendly hemp fiber flooring according to the present invention completes a product using a hemp fiber layer made of several layers of hemp material. As shown in the structure of FIG. 1, there is a finished surface of the uppermost layer 10, and the intermediate layer 20 and the lower layer 30 ) Has a base. That is, the uppermost layer 10, the intermediate layer 20, and the lower layer 30 are each manufactured and combined to manufacture an integrated hemp fiber pad. That is, the hemp fiber flooring according to the present invention may be composed of a plurality of hemp fiber layers. The plurality of hemp fiber layers may include at least two of the uppermost layer 10, the intermediate layer 20, and the lower layer 30, and it is preferable to include at least the uppermost layer 10 and the lower layer 30. The manufactured hemp flooring may be constructed as shown in FIG. 2.

The burlap board of the structure according to the present invention is a natural fiber, so it must be combined with an eco-friendly glue that does not harm the human body, but the existing general glue does not adhere well, and even if it is bonded, when there is a small external impact, it will be restored later. There is a phenomenon of separation.

The biggest reason to combine with eco-friendly glue is to maintain breathability, which is the best point of hemp fiber flooring. Here, “sufficient adhesion” means that the uppermost layer, the middle layer, and the lowermost layer become one layer and do not separate.

Hereinafter, the manufacturing process of the hemp fiber flooring according to the present invention will be described in detail.

1) Preparation of hemp fiber layer

First, prepare the main material, hemp fiber layer. It is preferable that the hemp fiber layer is a domestic hemp or a Chinese hemp. The hemp fiber layer is produced in a wide width with a width of 1800 mm using a hemp yarn using a machine. These hemp fiber layers may be variously manufactured by a general fabric manufacturing method.

In addition, it is possible to use other hemp fibers such as jute or kenaf as well as hemp (hemp, hemp) as the intermediate layer 20 and the lower layer 30 of the hemp fiber blanket according to the present invention.

2) Hemp fiber layer dyeing step

Second, the woven hemp fiber layer is dyed.

In the dyeing process, the uppermost layer 10, the middle layer 20, and the lower layer 30 are all dyed twice with fine green loess of 350 mesh or more, washed, dried, glued again, dried, and ironed again to prepare.

Among them, the top layer 10 is the finished surface, so it can be produced not only with ocher but also with various colored soils such as yellow soil, chestnut, black soil, white soil, pink soil, mugwort soil, and natural dyeing materials such as indigo and charcoal. Can produce eggplant natural colors.

However, it is more preferable to dye ocher and booming soil (yellow soil) than general natural dyeing materials because it has a depth and is known to be very beneficial to the human body.

3) Combined step

It is the most difficult part of the product manufacturing process of hemp fiber flooring.

Because hemp has large pores and natural fibers, it is difficult to bond with ordinary glue or adhesive. Even if it is glued, it is easily separated by pulling it. Adhesion strength enough to be used on the floorboard means adhesion that does not fall off easily by an adult man pulling it with both hands.

It is desirable to prepare and use an eco-friendly paste in order to bond several sheets of hemp fiber in the fusion step.

The eco-friendly paste is prepared by mixing starch paste or wheat flour paste and polyvinyl acetate (polyvinyl acetate, vinyl acetate resin) in a weight ratio of 2 to 2.5:1. When the mixing ratio of the starch paste or wheat flour paste and the polyvinyl acetate is outside the above range, effective mixing is not performed, and separation between the layers constituting the burlap floor may occur, which is not preferable.

The PVAc resin is an eco-friendly material that acts as an effective adhesive that is almost harmless to the human body as a building material enough to be used as a base for chewing gum.

However, like most eco-friendly materials, PVAc has a problem that is vulnerable to water resistance, which dissolves when contacted with water even in a cured state.In many cases, in order to modify this, it is copolymerized with other materials, which can cause harmful problems to the human body. . Therefore, in the present invention, it is preferable to use the PVAc resin alone, which is harmless to the human body.

However, such a water resistance problem is a problem that occurs when an extreme situation as a building material is encountered, such as water is accumulated in the lowest layer (building floor) of the hemp fiber flooring.In the case of the hemp fiber flooring produced through a series of processes of the present invention When used as, it is not a problem due to water resistance at all. However, in order to help the weak water resistance, the water resistance problem can be solved by sufficiently preventing moisture that can penetrate from the top layer in extreme situations by strengthening the additional coating process of the top layer.

In addition, when manufacturing an eco-friendly paste, natural minerals such as illite or tourmaline are finely divided into about 1,000 mesh, and 1 to 5% of the weight of the eco-friendly paste is added to prepare a functional eco-friendly paste. The functionality can be imparted to the fiber flooring.

In the present invention, the prepared lower layer 30 and the intermediate layer 20 are bonded with the prepared eco-friendly glue. When the uppermost layer 10 prepared here is bonded again with the prepared eco-friendly paste, it is possible to manufacture a hemp fiber blanket having an integrated structure.

In the following process, the final eco-friendly hemp fiber pad is manufactured through the remaining processes of the integrated hemp fiber pad.

4) 1st ironing step

The hemp fiber blanket after the fusion process is ironed once with heat of about 100 to 150°C.

5) Coating step

The coating process is carried out in three stages: first, second, and third.

Ⅰ) Primary coating

The primary coating is called hemp burlap. Mixing about 0.01 to 0.1% by weight of selenium, a natural antibacterial agent, is mixed with pure starch paste or wheat flour paste and painted once to save the texture of burlap and increase the breathability of the hemp fiber floorboard. Selenium is an eco-friendly material that is harmless to the human body, which is sometimes used as a nutrient.

Ii) secondary coating

The secondary coating is called impregnation of hemp. The secondary coating uses a natural resin containing cardol or cardanol. The cardol or cardanol has a molecular structure similar to urushiol, which is a component of lacquer, so it has a strong coating film and durability, and relatively convenient construction.

In the present invention, a natural resin containing cardol or cardanol is impregnated once or twice to preserve the water resistance and air permeability of the coating film, and the natural luster and texture of the hemp.

Iii) tertiary coating

The tertiary coating is a process for filling the voids of the second coated hemp and improving durability and water resistance, using water-based polyurethane (PU) or water-dispersed polyurethane (PolyUrethane Dispersions, PUD) that is harmless to the human body. It is preferable to coat twice.

The water-based polyurethane or water-dispersible polyurethane has many types, but it is environmentally friendly to the human body, and must have both water resistance, durability, and abrasion resistance.

The hemp fiber flooring finished with the tertiary coating is the most environmentally friendly and durable, and can withstand more than 24 hours when a lot of water is poured on it and left unattended. In this state, since the water repellency is maintained continuously, the water on the hemp fiber pad does not permeate, but due to the breathability, the water continues to evaporate into the air little by little.

The hemp fiber floorboard has no abnormality due to the tertiary coating of strong water resistance and durability.

6) 2nd ironing step

When the coating process is over, ironing is performed once with heat of about 100~150℃.

7) Finishing step

The hemp fiber has the characteristics of the fabric so that the connection part of the yarn protrudes a little like a bump, so it goes through the step of polishing with a small hammer to hold the rough side. In order to highlight the texture of refined natural fabrics, it is ironed once with a heater roller machine, and then pressed with a heavy press plate to improve the smoothness.

8) Foundation stage

The hemp fiber pads that have gone through the above process are cut to fit the size of the intended use. Usually, the hemp fiber pads can be cut at a 90° angle to a size of about 800 mm in width, about 640 mm in length, and about 1.5 mm in thickness. have.

The hemp fiber flooring according to the present invention manufactured through a series of processes as described above is a product in the form of a board having a certain size and thickness. The thickness of the product varies depending on the case of attaching multiple sheets in the process of combining, and there are usually from 2 to 6, and more can be made to order. Two-layer paper means that it consists of two sheets, the top layer and the bottom layer, without an intermediate layer.

In addition, the construction of the hemp fiber flooring according to the present invention is suitable for the floor and the inner wall of an ondol room inside a residential building, and is not suitable for the outside. When it is applied to the floor, it is similar to the construction method of Korean paper or ordinary tiles, and the construction method is not particularly limited, but it is preferable to use an eco-friendly starch paste or an eco-friendly adhesive for floor use.

On the other hand, it is apparent to those skilled in the art that the hemp fiber flooring according to the present invention can be used not only as a flooring material such as a flooring material, but also as a wallpaper by appropriately adjusting its thickness.

Hereinafter, a preferred embodiment of the present invention will be described in detail. The following examples are for illustrative purposes only, and the scope of the present invention should not be construed as being limited by these examples. In addition, in the following examples, specific compounds are used for exemplification, but it is obvious to those skilled in the art that even when their equivalents are used, an effect of an equal or similar degree can be exhibited.

Example: Preparation of burlap floor board

(Advanced) Wide burlap layers with a width of 1800 mm made of hemp yarn were prepared.

Of the prepared burlap layers, the top layer 10 was dyed twice using fresh ocher and yellow soil of 350 mesh or more, washed, dried, and pasted to dry and ironed.

In addition, the intermediate layer 20 and the lower layer 30 were dyed twice using fresh ocher of 350 mesh or more, washed, dried, and pasted to dry and ironed.

The top layer 10, the middle layer 20, and the lower layer 30, which have been subjected to the dyeing process, were combined to produce an integral floor plate. At this time, an eco-friendly paste was prepared and used when happo.

The eco-friendly paste was used as an adhesive in which starch paste and aqueous PVAc were mixed in a weight ratio of 2:1.

The prepared lower layer 30 and the intermediate layer 20 were adhered with the prepared eco-friendly paste (adhesive obtained by mixing starch paste and aqueous PVAc at a weight ratio of 2:1), and the prepared uppermost layer 10 was again added to the prepared When bonded with an eco-friendly glue, a hemp floor board of an integrated structure was manufactured.

After drying the burlap floor after the fusion process was completed, it was ironed once with heat of about 120°C.

The burlap board after the ironing process was coated three times as follows.

For the first coating, about 0.1% by weight of selenium, a natural antibacterial agent, was mixed with starch paste or wheat flour paste of the same ingredients as those used in the eco-friendly paste and coated once.

The secondary coating is a process of impregnating the burlap covering, and by impregnating twice with a natural resin containing a cardol component, the water resistance and air permeability of the coating film, natural luster and the texture of the burlap were utilized.

The tertiary coating was applied twice using aqueous polyurethane.

The burlap floor plate after the coating process was again ironed once with heat of about 100°C.

In addition, it went through a finishing step to hold the rough side of the yarn.

The final burlap floor board according to the present invention was manufactured by cutting the burlap board after the above process at a 90° angle to a size of about 800 mm in width, about 640 mm in length, and about 1.5 mm in thickness.

Comparative Example 1: Preparation of a hemp floor board according to a conventional construction method

By using the burlap at the construction site, dyeing, coating, pasting, and cutting were performed to prepare a burlap floor board of about 1.2 mm thick fabric and compared with the burlap floor board of the present invention.

Experimental Example 1

The following Table 1 summarizes the characteristics according to the construction process of the burlap floor board according to the present invention and the floor board using the conventional burlap.

Comparative Example 1 (conventional hemp floor board) Example (invention) Construction method All construction processes are carried out on site All processes are manufactured as finished products in advance at the factory Construction time
And cost Relatively time-consuming and expensive Save time and money Construction technology Hemp flooring construction technician is absolutely necessary Can be constructed by the general public Finished product form 1.2mm thick fabric form Thickness 1.5mm~ Board type durability Relatively weak and simple in color Strong, versatile and deep dynamic stability Resilient and semi-permanent, but requires remarkable technology Resilience, semi-permanent, easy partial repair

As summarized in Table 1 above, in the case of the conventional burlap floorboard according to Comparative Example 1, the entire process of pasting, cutting, dyeing and coating using hemp is completed at the site, so the work process takes a lot of time. Therefore, there is a problem that the construction cost is also set high. In addition, construction was difficult and expensive, so its use was limited.

However, it was confirmed that the burlap floor board according to the present invention is manufactured as a finished product in advance in a factory, so that time and cost are saved, anyone can construct it, and physical properties such as durability and resilience are also excellent.

Comparative Example 2

Commercially available jangpan (KCC jangpan) was compared with the burlap jangpan according to Example 1 of the present invention.

Comparative Example 3

Commercially available flooring (KCC Gangmaru) was compared with the burlap flooring according to Example 1 of the present invention.

Experimental Example 2

The products of the burlap floor board according to the present invention and the floor board (Comparative Example 2) and the floor (Comparative Example 3), which are commercially available general flooring materials, are compared and shown in Table 2 below.

Comparative Example 2 (Paint) Comparative Example 3 (Maru) Example (burlap floor board) Construction method facility usually usually Construction time short usually usually Construction cost Inexpensive, versatile Moderate, various Moderate, various Limit Limiting Limiting Semi-permanent dynamic stability none none good durability good good good Breathable none None, usually Very good Eco-friendly None, usually None, Moderate, Good Very good

As shown in the results of Table 2, it was confirmed that the burlap floor board according to the present invention can be used semi-permanently while maintaining the construction method and construction time cost to a similar degree to that of the commercially available floor board or floor. In addition, physical properties such as resilience and breathability are superior to existing products, and consist of only hemp fiber, an eco-friendly material, and it can be seen that it is a natural flooring material that is harmless to the human body by bonding these composites with an eco-friendly glue.

10: top floor
20: middle layer
30: lower floor

Claims (8)

It is manufactured using a plurality of hemp fiber layers made of natural hemp material,
Each of the plurality of hemp fiber layers is blended with an eco-friendly glue,
The eco-friendly paste is made by mixing starch paste or wheat flour paste and polyvinyl acetate (PVAc, polyvinyl acetate) in a weight ratio of 2 to 2.5:1. delete delete The method of claim 1,
The hemp fiber layer is a hemp fiber flooring comprising an uppermost layer as a finished surface and a lower layer as a base surface. The method of claim 1,
The hemp fiber padding is a hemp fiber padding that has a board shape of 1.5mm or more in thickness. Preparing a plurality of hemp fiber layers including an uppermost layer, an intermediate layer, and a lower layer,
Dyeing the uppermost layer, the middle layer, and the lower layer,
Making the top layer, the middle layer, and the lower layer into an integrated type by combining the eco-friendly pool,
The step of first ironing the integrated hemp fiber blanket once with a heat of 100 to 150 ℃,
Coating the hemp fiber long plate,
Second ironing the hemp fiber blanket once with heat of 100 to 150°C,
Finishing the rough surface of the hemp fiber long plate, and
Including the step of cutting the hemp fiber flooring to a size suitable for use,
The eco-friendly paste is prepared by blending starch paste or wheat flour paste and polyvinyl acetate (PVAc, polyvinyl acetate) in a weight ratio of 2 to 2.5:1. The method of claim 6,
The dyeing step is a method of manufacturing a hemp fiber paddy that is dyed twice using a fresh ocher of 350 mesh or more. The method of claim 6,
The coating step
Primary coating of mixing 0.01 to 0.1% by weight of selenium, a natural antibacterial agent, to starch paste or wheat flour paste and coating once;
A secondary coating impregnated once or twice using a natural resin containing cardol or cardanol; And
A method for producing a hemp fiber flooring consisting of a tertiary coating applied twice using water-based polyurethane (PU) or water-dispersible polyurethane (PolyUrethane Dispersions, PUD).

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