KR102636295B1 - Manufacturing method of eco-friendly wallpaper and decoration sheet comprising hemp fiber - Google Patents

Abstract

The present invention includes a step of peeling the hemp husk by inputting hemp stems dried to 20% or less in a mangler type peeler (P1), a hemp fiber manufacturing step of cutting the hemp fiber threads to a length of 2 to 10 cm (P2), and poly Ester fibers and LM (low melting point) fibers are finely chopped (carded) and the synthetic fiber mixture filaments made into cotton (filaments) are mixed with the hemp fibers to create a wallpaper material mixture, and the wallpaper material mixture is put into a loom and flattened. An eco-friendly wallpaper or interior film containing hemp fibers, which consists of the wallpaper material manufacturing stage (P3), which is easily expanded and compressed into a non-woven fabric (felt) of a certain thickness, and the wallpaper manufacturing stage (P4), which is compressed with a hydraulic heat press and cooling press. It is about manufacturing method.

Description

Manufacturing method of eco-friendly wallpaper and decoration sheet comprising hemp fiber}

The present invention relates to a method of producing eco-friendly wallpaper (Wall Paper) and interior film (decor sheet) with excellent health functionality by mixing cellulose-based hemp fiber extracted from hemp stem bark and eco-friendly synthetic fiber.

Currently, the wallpaper that is mainly used is made of paper, and since a lot of wood is cut down to make pulp, which is the raw material for paper, environmental destruction is serious and it is a major cause of land warming. Furthermore, wood for industrial use has a very long growth period, so it is short-lived. Since wood resources are being depleted at a rapid rate, wood prices are rapidly rising.

In addition, wallpaper made of paper has a very weak tensile strength and is easily damaged, and silk wallpaper in particular is coated with vinyl on the surface and is not breathable, causing problems such as mold growth.

Interior films (deco sheets) currently on the market are made of PVC, so they are not easy to dispose of and cause a lot of environmental pollution.

In addition, Patent Document 1 weaves fabric using natural fiber yarns as warp and weft yarns, and obtains wallpaper by backing the woven natural fiber fabric, so the problem of increased costs arises due to the spinning process for making fiber yarns and the weaving process for weaving them. Patent Document 2 is a wallpaper made by mixing hemp material made from hemp fiber and Korean paper material, but the bonding of the wallpaper is somewhat incomplete and the tensile strength is weak, so it is easily damaged. Patent Document 3 is a charcoal water made from charcoal powder. It is a hemp wallpaper that is applied to hemp fibers and Korean paper is attached to one side of the hemp fibers. As shown in Patent Document 2, this has problems such as insufficient bonding strength of the wallpaper and weak tensile strength, making it easily damaged. There is a way to improve this. It was requested.

1. Publication of Patent No. 10-2022-0145613 (published on October 31, 2022) 2. Public Patent Publication No. 10-2020-0134832 (published on December 2, 2020) 3. Registered Patent Publication No. 10-1120274 (announced on March 6, 2012)

Accordingly, in order to solve the problems of currently used wallpaper manufacturing methods, the present invention uses the stem bark of hemp, an annual plant with a growing period of about 4 months, and synthetic fibers with proven environmental friendliness as the main raw materials to produce the product, thereby reducing the production of pulp. The goal is to prevent the destruction of the environment by logging a lot of wood, and to provide a method of manufacturing wallpaper and interior film that is eco-friendly, has excellent health functionality, and is inexpensive to manufacture.

The method of manufacturing eco-friendly wallpaper containing hemp fiber of the present invention includes the step of peeling the hemp husk by putting hemp stems dried to less than 20% in a pressure roller type peeler (P1), and cutting the hemp fiber threads to 2 to 10 cm in length. In the hemp fiber manufacturing step (P2), polyester fibers and LM (low melting point) fibers are chopped (carded) into cotton shapes (filaments), and the synthetic fiber mixture filaments are mixed with the hemp fibers to create a wallpaper material mixture, It consists of a wallpaper material manufacturing step (P3) in which the wallpaper material mixture is put into a loom, spread out flat, and compressed to form a non-woven fabric (felt) of a certain thickness (P3), and a wallpaper manufacturing step (P4) in which the wallpaper material mixture is pressed using a hydraulic heat press and a cooling press. If necessary, the surface of the wallpaper is put into an impregnation machine, impregnated with liquid silicone or eco-friendly liquid resin, dried, and then put into a printing device equipped with a roller-type mold or flat mold for printing (P5), or printed on the surface of the wallpaper. It is characterized by mixing a binder with vermiculite, diatomaceous earth, red clay, or pozzolan, which is volcanic ash, and applying it by spraying and drying (P6).

The hemp used in the present invention is an annual plant with a short growing period of about 4 months, and can be harvested three times a year in tropical regions and twice a year in temperate regions, and is grown in various types all over the world, namely Oriental hemp, Kenaf, jute, flax, and hemp are grown. In particular, since they grow well without the use of pesticides, raw materials can be easily procured without environmental damage caused by logging.

Yams absorb and decompose pollutants (carbon dioxide) very well during the growth process, so they can secure carbon emissions rights and have the advantage of utilizing resources that are almost discarded, such as their stems being discarded or used as firewood.

In order to process hemp stems for weaving (cloth, textiles), the fibers are extracted by boiling to remove the outer skin of the stem, which significantly increases costs, such as requiring a lot of water and energy. However, the present invention By using it as is, you can dramatically reduce processing costs and still take in the ingredients beneficial to the human body that are abundant in the outer shell.

Synthetic fibers, which are auxiliary materials, are excellent in eco-friendliness because they use only materials that have been proven to be eco-friendly, do not use any adhesives or binders, and can be easily disposed of or recycled. Additionally, the emission of volatile organic compounds (TVOC) can be minimized due to thermochemical reactions during the product production process.

The product has excellent durability due to its high tensile strength and tension, has superior moisture absorption and discharge ability than cotton, and is a building interior material that breathes due to the many bubbles (pores: air pockets) created during the product production process.

It is a product with excellent health-promoting functionality for the human body as it emits a large amount of far-infrared rays and has excellent antibacterial, anti-fungal, anti-toxic, insect-repellent, and deodorizing properties.

1 is a diagram showing the manufacturing process of wallpaper or interior film of the present invention.
Figure 2 is a diagram of a pressing roller peeler for peeling yam skin of the present invention.
Figure 3 is a diagram showing a cross section of the interior film.
Figure 4 is a photograph showing wallpaper produced through the wallpaper manufacturing stage and wallpaper coated with stone dust.

Hereinafter, the description of the present invention with reference to the drawings is not limited to specific embodiments, and various modifications may be made. In addition, the content described below should be understood to include all conversions, equivalents, and substitutes included in the spirit and technical scope of the present invention.

An embodiment of the present invention will be described in detail with the manufacturing process diagram of FIG. 1.

1) Yam peeling stage (P1)

The harvested hemp stems are dried to a moisture content (by weight) of 20% or less, and the dried hemp stems are input into the pressing roller type peeler shown in Figure 2, that is, the dried hemp stems (50) are placed on the work table (20). When placed and pushed toward the pressing roller (10) equipped with a groove (11), the hemp stem is pulled, and when compressed, the cob and skin are automatically separated and the yam skin (51) is piled on the net (40), The broken cob powder 52 has various particle sizes but is accumulated in the storage bin 30. Here, the cob powder 52 is not discarded and can be used as livestock floor covering and natural compost, and can also be processed into pellets and used as firewood. As shown in FIG. 3, the grooves 11 of the pressing roller 10 are shown to be continuously formed along the circumference of the roller in the longitudinal direction and serve to draw the hemp stem into the roller. If the drawing action of the hemp stem is possible, the grooves 11 may be formed at regular intervals on the circumference.

2) Hemp fiber manufacturing stage (P2)

The peeled hemp husk (51) is pressed and automatically made into thin threads, and if necessary, finer threads can be made manually, and these hemp fiber threads are cut to a length of 2 to 10 cm. In this case, if the peel is crushed too finely into powder form, processing costs increase and the product manufacturing process is very complicated, the ingredients clump together and are not mixed evenly, and the natural texture on the surface of the product is lost. Also, be careful because if you cut it too long, it may become tangled or make the product difficult to manufacture.

3) Wallpaper material or interior film material manufacturing stage (P3)

Synthetic fiber mixtures such as PP (polypropylene) fibers, polyester fibers, and LM (low melting point) fibers are chopped (carded) into cotton shapes (filaments), and the filaments are mixed with the hemp fibers to create a wallpaper material mixture. make it

The hemp fiber and synthetic fiber mixture filaments are mixed at a ratio of 4 to 6 to 6 to 4 by weight. If the ratio of hemp stem bark is increased, the material cost is reduced, the color becomes dark brown and molding is difficult, and if the ratio is lowered, the color is bright and molding is easy, but the material cost increases and health functionality decreases.

When manufacturing wallpaper, only polyester and LM (low melting point) fibers are used as much as possible. A 1 to 1 mixing ratio by weight is acceptable. If tensile strength and durability are required, the ratio of polyester can be increased. In the opposite case, it can be lowered, and the ratio of polyester and LM (low melting point) fiber can be adjusted appropriately in the range of 2 to 1 to 1 to 2 based on weight.

When manufacturing interior films (decor sheets), PP (polypropylene) fibers are used instead of polyester fibers to increase durability and wear resistance.

In addition, as will be described later, the synthetic fiber mixture filament is melted by heat during the production process of the product and performs a binder (binding material) function, so adhesives, etc. are not required.

The wallpaper material mixture or interior film material mixture, which is a mixture of the hemp fiber and eco-friendly synthetic fiber mixture in a certain ratio, is put into a loom, spread out flat, and compressed to produce a wallpaper material or interior film material in the form of a non-woven fabric (felt) of a certain thickness. In making, the materials can be manufactured in single sheets or in roll form.

4) Wallpaper or interior film manufacturing stage (P4)

Wallpaper is manufactured by compressing the non-woven fabric of wallpaper using a press machine. When manufacturing as a single sheet, press it with a hydraulic heat press (pressure 50 to 100 tons) for 10 to 20 seconds at a heat press temperature of 80 to 230℃, then press it with a cooling press (5℃ or less) for 10 to 20 seconds to form it. do.

The temperature and pressure of the heat press are inversely proportional to the pressing time, so they must be properly controlled and molded. The pressing time and temperature must also be adjusted considering the type of synthetic fiber mixture used as the material and the melting point of each synthetic fiber.

When manufacturing roll-shaped products, the width of the product is 90 to 110 cm, and the length is manufactured in 16 to 18 m units considering ease of handling and construction. In addition, when manufacturing roll-shaped products, they can be manufactured without using roller-type cooling molds. However, in this case, the production speed of the product is slow, so to improve productivity, heat mold rollers and cooling mold rollers should be used in that order if possible. It is better to go through plastic surgery. Temperature, pressure, and time can be applied similarly to the applicable standards per unit area when producing single sheets. That is, the rotation speed of the roller is adjusted according to temperature and pressure.

Paper wallpapers currently in use have a thickness of approximately 0.5 mm to 1.5 mm, but the wallpaper of the present invention has a much higher tensile strength and durability than paper wallpapers even if the product is made with a thickness of 0.3 to 1.0 mm.

The thickness of the interior film is approximately 0.5 to 1.0 mm. If it is too thick, it may have difficulty attaching when wallpapering.

The wallpaper in the form of sheets or rolls manufactured as above is attached to the wall by applying glue or eco-friendly adhesive on the back side. As shown in Figure 5(a), the color of the product surface ranges from white to dark brown and the hemp fibers are used. It is created with a distributed texture.

5) Wallpaper or interior film printing step (P5)

Depending on the consumer's preference, various colors or patterns can be created on the product surface through the printing process.

The printing step of the wallpaper or interior film contains hemp fibers, so the surface is relatively uneven and the color or pattern cannot be printed clearly. Therefore, silicone (liquid) is added to the surface of the wallpaper or interior film through an impregnation machine. It is impregnated with eco-friendly resin (liquid), dried, and then put into a printing device equipped with a roller-type mold or a flat-type mold for printing. In this case, impregnating liquids, colorants, printing materials, etc. are made from raw materials with proven eco-friendliness.

Since there are various printing methods, you can print in various colors and patterns by considering cost, product characteristics, resolution, etc.

This printing step may be optional for wallpaper, but for interior films, without this printing step, the protective film 62 attached to the back of the interior film will peel off due to air circulation, so the printing step (P5) with the impregnation process is essential. .

6) Wallpaper or interior film application step (P6)

Spray method by mixing a binder with vermiculite, a type of stone dust with health functionality, diatomaceous earth, red clay, and pozzolan, a volcanic ash, on the surface of the wallpaper or interior film manufactured in the wallpaper or interior film manufacturing step (P4) before the printing step (P5). By applying and drying, wallpaper as shown in Figure 5(b) can be manufactured, and advantages in terms of health functionality and space design can be added.

7) Interior film manufacturing stage (P7)

When manufacturing for an interior film (Daeko sheet), an eco-friendly adhesive 61 is applied to the back of the interior film 150 that has gone through the printing step (P5) or the stone dust application step (P6), and the sheet film 63 for removal is applied. ) can be manufactured by attaching an adhesive protective film 62, and when using it, simply remove the sheet film 63 and attach it to the wall.

By this manufacturing method, wallpaper or interior film (decor sheet) can be manufactured in sheet or roll form.

110: wallpaper, 120: applied wallpaper, 130: printed wallpaper
150: Printed or applied interior film
10: Compression roller, 11: Groove
20: workbench
30: storage bin
40: mesh
50: dried yam stem, 51: yam peel, 52: cob powder
61: adhesive, 62: protective film, 63: sheet film

Claims (9)

A step (P1) of peeling the yam skin by inserting dried yam stems with a moisture content of 20% or less into a pressure roller type peeler,
A hemp fiber manufacturing step (P2) in which hemp fiber thread is made from peeled hemp husk and the hemp fiber thread is cut to a length of 2 to 10 cm,
Polyester fibers and LM (low melting point) fibers are cut into pieces (carded) and the synthetic fiber mixture filaments made into cotton (filaments) are mixed with the hemp fibers to create a wallpaper material mixture, and the wallpaper material mixture is put into a loom. The wallpaper material manufacturing stage (P3), which is made into a non-woven fabric (felt) of a certain thickness by flattening and compressing,
Eco-friendly wallpaper manufacturing method containing hemp fibers, which consists of the wallpaper manufacturing step (P4) of pressing with a hydraulic heat press and a cooling press.
According to paragraph 1,
In the wallpaper material manufacturing step (P3), the hemp fiber and synthetic fiber mixture filaments are mixed in a ratio of 4 to 6 to 6 to 4 by weight, and the synthetic fiber mixture filaments are mixed with polyester and LM (low melting point) by weight. ) A method of producing eco-friendly wallpaper containing hemp fiber, characterized in that the mixing ratio is appropriately adjusted in the range of 2: 1 to 1: 2.
According to paragraph 2,
In the wallpaper manufacturing step (P4), the hydraulic heat press is pressed at a pressure of 50 to 100 tons for 10 to 20 seconds and a heat press temperature of 80 to 230 ℃, and then formed by pressing with a cooling press at 5 ℃ or less for 10 to 20 seconds. Method for manufacturing eco-friendly wallpaper containing hemp fiber, characterized in that
According to paragraph 2,
In the wallpaper manufacturing step (P4), an eco-friendly wallpaper manufacturing method containing hemp fiber, characterized in that molding is carried out through a heat mold roller and a cooling mold roller in that order.
According to clause 3 or 4,
After the wallpaper manufacturing step (P4), the surface of the wallpaper is put into an impregnation machine, impregnated with liquid silicone or eco-friendly liquid resin, dried, and then put into a printing device equipped with a roller-type mold or flat mold for printing. Method of manufacturing eco-friendly wallpaper containing hemp fiber
According to clause 3 or 4,
A method of producing eco-friendly wallpaper containing hemp fiber, characterized in that after the wallpaper manufacturing step (P4), a binder is mixed with vermiculite, diatomaceous earth, red clay, or pozzolan, which is volcanic ash, and applied by spray method to the surface of the wallpaper and dried.
A step (P1) of peeling the yam skin by inserting dried yam stems with a moisture content of 20% or less into a pressure roller type peeler,
A hemp fiber manufacturing step (P2) in which hemp fiber thread is made from peeled hemp husk and the hemp fiber thread is cut to a length of 2 to 10 cm,
Polypropylene fibers and LM (low melting point) fibers are chopped into small pieces, and the synthetic fiber mixture filaments made into filaments are mixed with the hemp fibers to create an interior film material mixture. The interior film material mixture is put into a loom, spread out flat, and compressed. Manufacturing stage (P3) of interior film material made in the form of non-woven fabric (felt) of a certain thickness,
Interior film material manufacturing stage (P4), which is compressed with a hydraulic heat press and cooling press,
Characterized by putting the surface of the interior film material into an impregnation machine, impregnating it with liquid silicone or eco-friendly liquid resin, drying it, and then putting it into a printing device equipped with a roller-type mold or a flat-type mold and printing (P5). Manufacturing method of eco-friendly interior film containing fiber
In clause 7,
In the interior film material manufacturing step (P3), the hemp fiber and synthetic fiber mixture filaments are mixed in a ratio of 4 to 6 to 6 to 4 by weight, and the synthetic fiber mixture filaments are mixed with polypropylene and LM (low) by weight. A method of manufacturing an eco-friendly interior film containing hemp fibers, characterized in that the mixing ratio (melting point) is appropriately adjusted in the range of 2:1 to 1:2.
According to clause 8,
After the printing (P5) step, an interior film manufacturing step (P7) of applying an eco-friendly adhesive 61 to the back of the interior film and attaching a protective film 62 to which a removal sheet film 63 is attached is included. Method for manufacturing eco-friendly interior film containing hemp fiber, characterized in that

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