KR100546789B1 - Environmental friendly functional base sheet for wallpaper - Google Patents

Abstract

The present invention is for the paper obtained by combining the upper layer paper made by mixing the pulp and synthetic wood pulp (SWP) having a self-binding force and the base layer paper made by mixing waste synthetic fibers and pulp to increase the strength to increase the dimensional stability The present invention relates to an activated carbon super medium obtained by combining an activated carbon layer paper and a base layer paper further comprising activated carbon in order to add eco-friendliness to the functional super medium and the super medium. The functional super medium and activated carbon super medium according to the present invention have high dimensional stability and strength, which are essential for wallpaper construction, and are excellent in workability and workability, and are environmentally friendly by increasing the content of natural materials. It is a special material with the advantages of fiber. In particular, the activated carbon super medium is an environmentally friendly interior material having an excellent function of controlling humidity and removing harmful substances in the room by strong adsorption of activated carbon, creating a comfortable living environment and generating negative ions and far infrared rays.

Ultra medium, pulp, latex, synthetic fiber, workability, eco-friendly, activated carbon

Description

Eco Friendly Functional Base Sheet {Environmental Friendly Functional Base Sheet for Wallpaper}

1 is a manufacturing process diagram of the eco-friendly functional super medium showing the manufacturing and overlapping process of the base layer paper and the top layer paper according to an embodiment of the present invention,

Figure 2 is a manufacturing process diagram of the activated carbon super medium showing the manufacturing and overlapping process of the base layer paper and the activated carbon layer paper according to another embodiment of the present invention.

The present invention relates to an eco-friendly functional super medium obtained by combining a top layer mixed with pulp and synthetic wood pulp (SWP) and a base layer mixed with waste synthetic fibers and pulp by a simple wetland process, and activated carbon super medium reinforcing the eco-friendly function of super medium. . More specifically, the present invention is a wetland process without a separate adhesive base layer prepared by mixing waste synthetic fibers and pulp to increase the strength and the top layer prepared by mixing pulp and SWP to increase the dimensional stability, which is a prerequisite for wallpaper construction It relates to an environmentally friendly functional super medium obtained by integrally bonding through, activated carbon super medium reinforced with environmentally friendly functions, and their other uses.

When wallpaper wallpaper is weak, the adhesion between the wall surface and the paper is weak, so it is common to apply the super medium to the wall and to apply the paper on it again. The super medium used up to now is a super medium using a natural material or a synthetic material.

1) paper media

It is a super medium made of soft and tough special fiber, doc fiber, hemp fiber and imported special long fiber among natural pulp.It is hydrophilic, so it has excellent adhesiveness but weak tear strength and water resistance. It is not suitable as a super medium, because its thermal strength is weak and bursting occurs.

2) nonwoven fabric

As the residential culture becomes more and more apartments, super badges made of non-woven fabrics with excellent tear strength are used. Nonwoven super medium has high strength and light weight, excellent elasticity and tear strength. However, because of hydrophobicity, synthetic resin pools that are harmful to the human body should be used instead of eco-friendly pools when constructing super medium, and it is cumbersome to add additional operation site construction to facilitate adhesion during wallpaper construction. In addition, due to the low density, the thickness is relatively thick (200 × 10 ^-3 mm), so that a layer is formed on the overlapped portions of the nonwoven fabric during wallpapering, so that the appearance of the joint is not good, and the chemical fiber is difficult to decompose and cannot be recycled. There are disadvantages.

3) Placement super badge

It is a super medium made by laminating paper (notch) and non-woven fabric with adhesive in a separate process, and because it is a product in which heterogeneous paper and non-woven fabric are bonded with adhesive, burst occurs due to the difference in elongation rate due to heterogeneous physical properties after wallpaper construction.

Therefore, there is no satisfactory ultra medium until now, and there is a need to develop a super medium that has remarkably complemented the problems of paper, nonwoven fabric, and super medium. Recently, nonwoven fabric used in place of paper super paper is used in place of general paper due to its relatively high strength, but non-woven fabrics are not limited in resource recycling and manufacturing costs are limited. In addition, in the case of the contact super medium, two different materials are laminated with a special adhesive and are used at a level used (Korean Patent Registration No. 286283 and 96-15750).

The present inventors continued to develop a super medium having only the advantages of paper and nonwoven paper. As one of them, the present inventors developed a special paper manufactured by combining natural pulp and polyester synthetic fibers with a heat-sealed binder and utilized it as a super medium (Korean Patent Publication No. 2004-29534). These special papers have the advantages of higher strength than paper, good adhesion to grass, and very low manufacturing cost.However, the wall paper is absorbed excessively due to the super-bleeding surface of super medium during the construction of wallpaper. There was a downside.

Accordingly, the present inventors have improved the disadvantages, the surface pulp is not only dense but also excellent in dimensional stability, in order to produce a paper medium with excellent dimensional stability, natural pulp in the base layer paper and SWP using waste synthetic fibers such as polyester, acrylic, rayon, nylon The upper layer paper prepared by mixing was prepared separately, and overlapped by the wetland process, and then functional latex was prepared on the surface of the upper layer to further enhance the dimensional stability.

In order to eliminate such problems, the present inventors can easily separate the paper when the paper is laminated with two layers of adhesives, as in the known art, and may cause side effects caused by chemical adhesives (environmental pollution, sick house syndrome, etc.). Natural binders such as starch and casein were added to the raw materials in the papermaking process to develop eco-friendly functional papers that can be overlapped by the wetland process.

Functional super medium according to the present invention exhibits excellent tear strength, tensile strength, hydrophilicity and dimensional stability and is not only excellent in workability, but also recyclable, which is a functional super medium that combines price competitiveness.

The advantages of the super medium according to the present invention are summarized as follows.

-It is manufactured by mixing natural pulp with synthetic fiber or SWP. It is a hydrophilic material with excellent tear strength. It has excellent adhesion to glue. Therefore, when used as a super medium, no separate construction site is required.

-Tissue is denser, stronger than nonwoven fabric, relatively thin (140 × 10 ^-3 mm), and grass does not cut to the back.

-As it contains natural pulp, it can be recycled.

-It is an environmentally friendly material in that it can reduce the generation of toxic gases when burning by lowering the ratio of synthetic fibers and utilize waste synthetic fibers.

Furthermore, the present inventors have developed activated carbon super medium by applying the above super medium to produce super medium reinforced with eco-friendly functions. Activated charcoal is a material processed from charcoal, which functions like charcoal, but has a larger surface area than charcoal to absorb various harmful substances and moisture better. Activated carbon is a collection of carbon made up of countless micropores. It is used for purifying air by adsorbing harmful substances as an adsorbent, and its inner surface area is 500 ~ 1,500㎡ per 1g due to its extensive network structure. The functional group of the carbon atom on the surface has the property of adsorbing molecules of adsorbate by applying attractive force to surrounding liquid or gas. Activated carbon keeps the same function as the existing charcoal, such as insulation effect, humidity control, removal of harmful substances, and because of the large number of micropores, the inner surface area is very large and has excellent functions compared to the charcoal itself, and thus the utilization of activated carbon is increasing.

In Korea, a method for producing a super medium or wallpaper containing charcoal or activated carbon is applied to a surface of a conventional super medium by applying a mixture composed of charcoal and an adhesive, and dried by hot air at 50 to 70 ° C. (Korea Patent Publication No. 2000) -47735), a method of preparing a feeder containing charcoal powder by adding a charcoal powder having a particle size of 100 to 500 mesh to the pulp during the papermaking process and kneading and stirring (Patent No. 322946). .

However, when charcoal or activated carbon is mixed with an adhesive and coated on the pulp, such as conventional charcoal or activated carbon-containing wallpaper or super medium, the adhesive prevents the surface pores of the activated carbon, so that the adsorption capacity specific to charcoal or activated carbon is not properly exhibited. It was.

On the other hand, Korean Patent No. 485284 discloses a method of manufacturing activated carbon paper by mixing beaten pulp with silver, activated carbon, and the like. However, according to the patent, since the active carbon paper is manufactured by adding only silver and activated carbon by using only the existing paper manufacturing process as it is, the obtained activated carbon paper has a low tear strength like paper and is easily torn. Therefore, in order to utilize as a super medium, it can only be constructed by attaching the entire surface of the activated carbon to the wall with the paper for pooling, so that the micropores of the activated carbon are blocked by the paper for pooling, so the function of the activated carbon cannot be fully exhibited. Less sense of use

Therefore, the present inventors prepare the activated carbon layer separately by mixing the activated carbon in the pulp during the raw paper process, and then attach the activated carbon layer to the surface of the base layer of the overlapping super medium according to the present invention by using a simple wetland process without using an adhesive. While maintaining the prepared carbon activated carbon medium that can improve the tear strength. In particular, the activated carbon super-battery developed by the present inventors has excellent tear strength and elasticity, so instead of adhering the front surface to the wall, only the two edges are attached and the middle part is lifted from the wall, thus semi-permanently preserving the adsorption and purification functions of the activated carbon. have.

An object of the present invention is to provide a super medium of excellent physical properties having both the characteristics of the top layer for enhancing the dimensional stability required for the wallpaper construction and the base layer for increasing the strength.

The present invention is to use the waste synthetic fibers discarded in the textile mills combined with the pulp and to produce a super medium with excellent physical properties while having a low manufacturing cost.

An object of the present invention is to provide an environmentally friendly activated carbon super medium prepared by adding activated carbon.

An object of the present invention is to provide an activated carbon super medium by laminating a base layer paper and activated carbon layer paper for the super medium to increase the strength.

It is an object of the present invention to provide a variety of uses, such as fan paper, pig paper, wallpaper paper, disposable wipes, veneer base, substrate paper, paper tape paper, etc., prepared by combining pulp with synthetic fibers.

An object of the present invention is to provide a super medium as an environmentally friendly material containing pulp.

The above and other objects of the present invention can be achieved by the present invention described below.

The present invention is obtained by combining the synthetic wood pulp (SWP) and the upper layer mainly composed of pulp to increase the dimensional stability and the base layer obtained by mixing and mixing waste synthetic fibers and pulp to increase the strength through the wetland process. Eco-friendly functional super medium.

Top layer paper has self binding to enhance dimensional stability, and SWP with high dimensional stability is mixed with pulp.

The base paper is made by mixing waste synthetic fibers and pulp by applying a known wet nonwoven fabric manufacturing process. In the present specification, the upper layer and the base layer are interpreted to represent the upper layer grass paper and the base layer grass paper, respectively.

Hereinafter, the structure of the upper layer paper and the base paper and the manufacturing process of the paper medium will be described in detail.

1) Upper layer grassland

Upper layer paper is manufactured by the papermaking process by mixing pulp and SWP as main components. In order to improve the dimensional stability, the high degree of short fibers (L-BKP, N-BKP) of the pulp is 18 to 40 ° SR, and preferably 22 ° SR.

In raw materials, natural binders (casein, cationic starch) and synthetic binders (polyvinyl alcohol: PVA) are added. The use amount of the binder can be easily determined by those skilled in the art, but is preferably used in the range of 3 to 16 parts by weight per 100 parts by weight of the mixture of natural pulp and SWP. The content ratio of cationic starch, casein, and PVA is preferably 1: 1: 1 to 1: 1: 6.

If necessary, 1 to 3 parts by weight of an alkyl ketene dimer (AKD), which is a sizing agent for increasing the water resistance in neutral paper, per 100 parts by weight of the pulp mixture, and an epoxy as a wetting agent to increase the strength of the product. 1 to 6 parts by weight of the strength enhancer may be added. In addition, if necessary, dispersants, retention promoters, strength enhancers, antifoaming agents, mold release agents, and the like may be further included, and their content may be easily determined by those skilled in the art.

In order to reinforce the surface structure and increase the dimensional stability, the upper layer and the upper layer are laminated with a low Tg latex after the overlap of the upper layer and the base layer so as to have excellent functions such as dimensional stability in wallpaper construction.

The preferred basis weight of the top layer paper is 10-40 g / m 2, most preferably 20 g / m 2.

2) Basement Grassland

In general, synthetic fibers have been used in the production of wet nonwoven fabrics, but they have a disadvantage of low price competitiveness because they are expensive. Therefore, in the present invention, one or two or more waste synthetic fibers selected from polyester, acrylic, rayon, and nylon discarded in a textile mill are processed (cut) to 5 mm to 20 mm. Pretreatment is preferably performed by adding a surfactant in an amount of 0.5 to 2% by weight of the waste synthetic fiber so that the waste synthetic fiber is hydrophilic and well dispersed in water and mixed with pulp during processing. It is preferable to use an alcohol or fatty acid ester type nonionic surfactant as surfactant.

Base paper is manufactured by mixing paper pulp with waste synthetic fiber. In the raw material, natural binders (casein, cationic starch) and synthetic binders (PVA) can be added, and neutralizing agent AKD and epoxy strength enhancers can be added as necessary.

Base layer paper is manufactured using a known wet nonwoven fabric manufacturing process, and 0.5 to 2% by weight of surfactant is added to waste synthetic fibers processed to 5 mm to 20 mm, and dissociated in a special structure pulp where fiber dispersion occurs, and the pulp is mixed. Grass in Baht The basis weight of the base layer paper is preferably 10 to 60 g / m 2, most preferably 40 g / m 2.

Synthetic fiber does not have a self-binding force, it is not combined with natural pulp, but when the wetland is dried by supplying heat in the drying process step after the heat-sealing binder is added according to the present invention, the bond is made between the natural pulp and synthetic fibers. The use amount of the binder can be easily determined by those skilled in the art, but is preferably used in the range of 3 to 16 parts by weight per 100 parts by weight of the natural pulp and waste synthetic fiber. The content ratio of cationic starch, casein, and PVA is preferably 1: 1: 1 to 1: 1: 6.

1 to 3 parts by weight of AKD, a sizing agent for increasing the water resistance in neutral paper, and 1 to 6 parts by weight of an epoxy paper strength enhancer, for increasing the strength of the product, may be added per 100 parts by weight of the pulp and synthetic fiber mixture. In addition, if necessary, known dispersants, retention promoters, strength enhancers, antifoaming agents, mold release agents, and the like may be further included, and their content may be easily determined by those skilled in the art.

3) papermaking and overlapping process

Since the top layer paper and the base layer paper contain a considerable amount of natural binder, it is not necessary to apply a separate adhesive for overlapping. In the wet state, the paper of both layers is simply overlapped. The upper layer made of wire and the base layer made of vat are laminated in wet conditions with a water content of 80 to 90%.

The manufacturing process of the super medium is in accordance with the general papermaking process, unless otherwise specified.

To explain this briefly, natural pulp is dissociated in water at a concentration of 2 to 5% by weight in a pulper, and beaten to 18-40 ° SR in a refiner.

The waste synthetic fibers of the base layer are dissociated (concentration of about 1 to 5% by weight) in a fiber special beater (Beater) such as Carbiter, and the above raw materials are mixed. The top and base layers are then laminated using wires and batts, then pressed and dehydrated through a dry dryer, as in the general long-term wet papermaking process. At this time, thermal bonding between the materials occurs by the binder used to obtain the density of the tissue and the high strength of the paper, thereby producing a super medium according to the present invention.

4) surface treatment

Superimposed superbattery is coated with SBR (Styrene Butadiene Rubber) latex with low Tg (glass transition temperature) on one side of the top layer to increase dimensional stability as needed. Preferably, SBR latex and water are mixed 1: 2 to 2: 1 and sprayed onto one side of the upper medium paper to improve dimensional stability.

In the present invention, after laminating the upper layer and the base layer paper, spray coating a latex solution at about 30-50 kg per ton of the upper layer, and preheating with hot air to reduce contamination by the dryer during the drying process and applying a release agent to the surface as necessary.

In the present invention, the main purpose of spray coating with a low Tg SBR latex is to prevent the wallpaper paste from being absorbed into the super medium more than necessary during wallpaper construction, to improve the dimensional stability of the super medium to improve the seam of the wallpaper, and the wallpaper and re- wallpaper This is to make it easier to separate the super medium.

The basis weight of the prepared super medium can be easily adjusted by those skilled in the art according to the manufacturing process conditions, in the present invention, the average basis weight is adjusted to 20 to 100 g / ㎡.

The type of pulp used in the present invention is not particularly limited, but natural pulp such as wood pulp having a high degree of high temperature of 18 to 40 ° SR is preferred. Needle-Bleach Kraft Pulp (N-BKP) or conifer bleaching pulp (L-BKP) is commonly used, dissociating the pulp at a concentration of 1 to 10% by weight in water and then beating at the refiner. Is used.

The waste synthetic fibers according to the present invention may be selected from polyester, acrylic, rayon, and nylon that are discarded for resource recycling and cost reduction.

In a preferred embodiment of the present invention, the super medium is 100 parts by weight of a pulp mixture of 60 to 80% by weight of pulp and 40 to 20% by weight of SWP; And an upper layer paper prepared by mixing 3 to 16 parts by weight of cationic starch, casein, and polyvinyl alcohol (PVA) binder mixture; And 100 parts by weight of a pulp mixture of 40 to 60% by weight of pulp and 60 to 40% by weight of waste synthetic fibers. And a base layer paper prepared by mixing 3 to 16 parts by weight of cationic starch, casein, and PVA binder mixture.

The binder mixture is a mixture of cationic starch, casein, and PVA in a ratio of 1: 1: 1 to 1: 1: 6, respectively.

In order to increase the dimensional stability, the solution and the release agent mixed with SBR latex and water 1: 2 to 2: 1 on the upper layer may be sprayed on the upper layer, and AKD 1 to 3 parts by weight, epoxy, respectively, on the upper layer paper and the base paper 1 to 6 parts by weight of the resin, and mixtures thereof may be further added.

In a preferred embodiment of the method of making a super medium of the present invention:

100 parts by weight of a pulp mixture of 60 to 80% by weight of pulp and 40 to 20% by weight of SWP; And 3 to 16 parts by weight of cationic starch, casein, and polyvinyl alcohol (PVA) binder mixture to prepare an upper layer paper from wire;

100 parts by weight of a pulp mixture of 40 to 60% by weight of pulp and 60 to 40% by weight of waste synthetic fibers; And 3-16 parts by weight of a cationic starch, casein, and polyvinyl alcohol (PVA) binder mixture to prepare a base layer paper with batt:

Lamination of upper and lower grasslands in wetlands with a water content of 80-90%; And

Spraying a solution of SBR latex and water 1: 2 to 2: 1 on the top layer:

It provides a super medium production method consisting of steps.

Spraying a release agent on the upper layer may be further included, and 1 to 3 parts by weight of AKD, 1 to 6 parts by weight of epoxy resin, and a mixture thereof may be further added to the upper layer paper and the base paper.

In addition, the waste synthetic fibers in the process is more preferably used by pre-treating the alcohol or fatty acid ester type nonionic surfactant of 0.5 to 2% by weight based on the content of the waste synthetic fibers.

In the present invention, the base layer can have a high tear strength by using a dispersing agent (surfactant) to mix and disperse the waste synthetic fibers with low dispersibility in water and pulp. In addition, binders such as cationic starch, casein and PVA are added to the upper layer for the most important wallpaper seam during wallpaper construction, and the surface is treated with latex having a low Tg.

In this way, the wet nonwoven fabric using pulp and waste synthetic fiber has excellent tear strength, so that it is not necessary to add a hardly decomposable synthetic resin that remains as a contaminant in the paper wastewater to increase the strength.

The present invention is a functional super medium that provides the perfect function of the super medium by overlapping the two wetlands formed from the materials different in use and properties on the bart.

1 shows a manufacturing process diagram of a schematic manufacturing process and an overlapping process of a base layer paper and an upper layer paper according to an embodiment of the present invention.

The present invention also provides an activated carbon super medium prepared by mixing the beaten pulp and activated carbon to produce an activated carbon wetland and then bonding it to the base layer surface of the super medium according to the present invention. In the case of preparing a super medium by only mixing the activated carbon with pulp as in the known art, there is a problem that the strength is low so that it cannot be used as a super medium, and the present inventors have applied the above-described general functional super medium to ensure proper strength as a super medium. The stacking process was introduced in activated carbon super medium.

Activated carbon super medium according to the present invention is an activated carbon layer paper produced by mixing and dissociating pulp and activated carbon and then dispersing activated carbon in a content of 30 to 60 g / ㎡ using a wire; And a base layer paper prepared by mixing 100 parts by weight of a pulp mixture of 40 to 60% by weight of pulp and 60 to 40% by weight of waste synthetic fiber and 3 to 16 parts by weight of cationic starch, casein, and PVA binder mixture. Lose.

Activated carbon used in the present invention is a heat treatment of carbonaceous materials such as charcoal, coconut shell, lignite, anthracite coal, bituminous coal, the particle size is 100 to 400 mesh (mesh), iodine adsorption power is 900mg / g or more and 1,500mg / g or less Use it.

The type of pulp used in the production of activated carbon sheet paper is not particularly limited, but natural pulp such as wood pulp is preferred, and pulp having N-BKP or L-BKP having an altitude of 18 to 40 ° SR is most preferred.

In addition to pulp and activated carbon, the activated carbon layer paper may contain AKD as a sizing agent for enhancing the water resistance effect, an epoxy resin as a wetting agent for increasing the strength, and a retention agent such as cationic starch. The appropriate amount of AKD is 10 to 20 kg per tonne of activated carbon paper, the appropriate amount of epoxy resin is 40 to 80 kg per tonne of activated carbon paper, and the addition of retention agents such as cationic starch is 5 to 20 kg per tonne of activated carbon paper. Those skilled in the art can easily determine within the scope of.

The superimposed activated carbon super medium is surface-coated with low Tg SBR latex on one side of the base layer to increase the dimensional stability as necessary. The specific latex application process and the composition of the latex solution are as described in the upper layer-base layer surface treatment process described above.

Laminate the base and activated carbon papers, then spray-coated 30 to 50 kg of latex solution per ton of base paper, preheat with hot air to reduce contamination by the dryer during the drying process, and release the release agent on the surface as needed.

The basis weight of the activated carbon layer papermaking according to the present invention can be easily adjusted by those skilled in the art according to the manufacturing process conditions, in the present invention, the average basis weight is adjusted to 30 to 60 g / ㎡, preferably the basis weight is adjusted to 50 g / ㎡ .

The activated carbon layer paper produced as described above overlaps with the base layer paper of the super medium prepared according to the present invention.

The manufacturing process of the activated carbon layer paper and the base layer paper according to one embodiment of the present invention and their overlapping process are shown in FIG. 2. This will be described in more detail as follows.

Activated carbon has functions such as oxygen supply, humidity control, adsorption of harmful substances (deodorant effect), antibacterial effect, far infrared ray and anion release effect. In order to maintain the function of activated carbon as described above semipermanently in the activated carbon-containing super medium according to the present invention, the first super medium is lifted from the wall except for the minimum part for attaching to the wall without being completely adhered to the wall, Second, since the activated carbon layer on the back side must maintain the unique color of the super medium without transferring to the front super medium layer, it is laminated in the papermaking process. Conventional activated carbon is produced in a single layer by mixing pulp and activated carbon in the raw material. In this case, the front surface of the super medium is blacked by the activated carbon, so that wallpaper construction is impossible.

To this end, the supply of raw materials for activated carbon and basal paper is dualized. In other words, the raw material of the basal layer for super medium is 30 ~ 60g / m2 with Vat, and the activated carbon layer raw material is 30 ~ 60g / m2 with wire. do.

The activated carbon super medium according to the present invention is an overlap between the base layer paper and the activated carbon layer paper as described above, and the average basis weight of the activated carbon super medium according to the present invention is 60 to 120 g / m 2, preferably 90 to 100 g / m 2.

The super medium and activated carbon super medium according to the present invention are constructed such that the top layer base paper and the base layer base paper each having a latex surface treatment contact the wallpaper. Since the super medium and activated carbon super medium according to the present invention have both the characteristics of paper and the advantages of synthetic fibers, they have excellent printing characteristics and smooth texture, and also exhibit excellent strength, and thus, general fancy paper, wrapping paper, stripe paper, wallpaper paper, disposable It can be variously used as a material of wet wipes, veneer base, substrate paper, or paper tape paper.

The invention can be better understood by the following examples, which are intended to illustrate the invention and are not intended to limit the scope of protection defined by the appended claims.

Example

Example 1 Preparation of Eco-Friendly Functional Super Medium

end. pulp

N-BKP and L-BKP are dissociated in pulp at a concentration of 3.0% by weight in water and then beated to 22 ° SR in a refiner for cutting the pulp.

I. Waste synthetic fiber

The waste synthetic fiber is cut into 10 mm, and then 1% of a surfactant (ILGEN SPP., Ilshin Fine Chemicals) is mixed in the fiber special dissociation pulp based on the content of the waste synthetic fiber, and then dissociated to 3% by weight in water.

All. Synthetic Wood Pulp (SWP)

The SWP is dissociated in a special dissociation pulp at a concentration of 3% by weight in water.

la. Manufacture process

a. Upper layer papermaking

140 kg of pulp obtained from a), 60 kg of SWP obtained from c), 2 kg of cationic starch, 2 kg of casein, 6 kg of PVA, 4 kg of AKD, and 6 kg of epoxy resin are mixed and papered according to a conventional papermaking process.

b. Base layer papermaking

100 kg of pulp obtained in a), 100 kg of waste synthetic fiber obtained from b), 2 kg of cationic starch, 2 kg of casein, 6 kg of PVA, 4 kg of AKD, and 6 kg of epoxy resin are mixed and batted in bat according to a conventional papermaking process.

c. Ultra medium manufacture

Overlay the top layer made of wire and the base layer made of batt, mix SBR latex (ksl 202 or ksl 230, Kumho Petrochemical) in the same amount with water, spray it in an amount of 40 kg per ton of top layer on the top layer, and then press Press), Dryer and Pop Real.

In order to improve the problems due to the low strength (tear strength) of existing super medium and to obtain the workability during the construction of the fixed medium (wall paper) and the best quality after the construction, the long-term and annular grass paper method is used to secure the dimensional safety according to the proposed method. Produced in overlap.

Example 2: Preparation of Activated Carbon Super Medium

end. Natural pulp

N-BKP and L-BKP are dissociated in the pulp at a concentration of 3.0% by weight in water and then beaten to 22 ° SR in a refiner for cutting the pulp.

I. Waste synthetic fiber

The waste synthetic fiber is cut into 10 mm, and then 1% of a surfactant (ILGEN SPP., Ilshin Fine Chemicals) is mixed in the fiber special dissociation pulp based on the content of the waste synthetic fiber, and then dissociated to 3% by weight in water.

All. Activated carbon

Activated carbon with 300 mesh and 1000 mg / g of iodine adsorption is dissociated in special dissociation pulp to 3% by weight in water.

la. Manufacture process

a. Activated carbon layer papermaking

100 kg of natural pulp obtained in a), 100 kg of activated carbon solution obtained in c), 2 kg of AKD, 2 kg of epoxy resin, 2 kg of cationic starch, and 2 kg of casein are mixed in a reactor and papermaking is carried out in a conventional papermaking process with wire.

b. Base layer grassland manufacturing

100 kg of natural pulp obtained from a), 100 kg of waste synthetic fiber obtained from b), 2 kg of cationic starch, 2 kg of casein, 10 kg of PVA, 4 kg of AKD, and 6 kg of epoxy resin are mixed and batted by conventional papermaking process.

c. Preparation of Activated Carbon Super Medium

Overlay the activated carbon layer made of wire and the base layer made of batt, mix SBR latex (KSI 202 or KSI 230, Kumho Petrochemical) with water in the same amount, spray it on the surface of the base layer in an amount of 40 kg per ton and press ), Dryer and Poppy Real.

In order to improve the problems caused by the low strength (tear strength) of existing super medium, and to obtain the workability during the construction of the fixed medium (wall paper) and the best quality after the construction, the long-term and annular grass paper methods are used to ensure the dimensional stability according to the proposed method. Produced in overlap.

Example 3: Physical property test

A. Comparison of properties of super medium

The physical properties of the super medium prepared according to the present invention were compared with those of commercially available super medium and nonwoven super medium.

The method of measuring the tear strength and tensile strength of each sample is as follows.

Tensile strength: Tensile strength of each specimen was measured according to Korean Industrial Standard KS M 7014 (1980).

-Tear strength: The tear strength of each material specimen of Korean Industrial Standard KS M 7016 (1980) was measured.

Comparison of the physical properties of the commercial medium medium and the ultra medium medium obtained in Example 1 are as follows.

Properties Comparative Sample 1 (folding super medium) Comparative Sample 2 (Non-woven Fabric) Sample (Inventive Medium) Basis weight (g / ㎡) 77 40 60 Thickness (㎛) 160 215 155 Density (g / cm 3) 0.48 0.19 0.39 Bulk (cm 3 / g) 2.08 5.38 2.58 Tensile Strength (kg / 15mm) 6.8 1.48 5.25 Tear strength (g) 125 More than 400 345

As shown in Table 1, Comparative Sample 1 (Bad Super Batch) and Comparative Sample 2 (Non Woven Fabric) showed that either tensile strength or tear strength was relatively good, but tensile and tear strength were similar to those of the sample according to the present invention. Was not all excellent.

In addition, since the superabsorbent super badge of Comparative Sample 1 is a product of non-woven fabric and non-woven fabrics of different materials bonded together with adhesive, burst phenomenon occurs due to the difference in elongation after wallpaper construction, and the non-woven super badge of Comparative Sample 2 is hydrophobic and thus does not adhere to wallpaper While it is cumbersome to separate the operation site construction at intervals, the sample according to the present invention is a hydrophilic paper and has excellent adhesive strength with the grass and excellent adhesion to the wallpaper and the grass, and does not require a separate operation site construction. Therefore, the super medium according to the present invention is markedly advantageous in practical use.

In addition, the sample according to the present invention is produced in a layered structure is dense, the tissue is denser than the non-woven fabric medium during wallpaper construction, the strength is excellent and the thickness is relatively thin.

In particular, the two edges were specially produced at 20 × 10 ^-3 mm or less by adjusting the width of the wetland on the bart and wire, thereby minimizing the thickness of overlapping areas. Therefore, it is possible to remarkably reduce the cost and process of the wallpaper construction and excellent construction effect.

B. Property Comparison of Activated Carbon Super Medium

The physical properties of the activated carbon super medium (sample) prepared in Example 2 and the activated carbon super medium (comparative sample) of commercially available operating materials were compared. Tear strength and tensile strength were performed according to the measurement method described above, and the measurement method of wet tensile strength is as follows.

Wet tensile strength: The wet tensile strength of each specimen was measured according to Korean Industrial Standard KS M 7027.

Comparison sample Sample Basis weight (g / ㎡) 80.0 90.0 Thickness (㎛) 126 171 Density (g / cm 3) 0.63 0.53 Bulk (cm 3 / g) 1.58 1.90 Tensile Strength (kg / 15mm) MD 6.70 6.05 CD 4.60 3.40 Tear strength (g) MD 92 (4) 328 (4) CD 60 (2) 214 (2) Wet Tensile Strength (kg / 15mm) MD 1.30 2.15

As can be seen from Table 2, the sample according to the present invention is not high in tensile strength compared to the comparative sample of the general operating area activated carbon super medium, but excellent in tear strength and wet tensile strength. Therefore, the sample according to the present invention having high tear strength and wet strength does not occur a super badge burst that may be present in a general super medium in the process of drying the paste coated for wallpaper and super medium adhesion after wallpaper construction.

The deodorization rate of the activated carbon super medium according to the present invention was investigated, and is shown in Table 3 below. The test method was according to KICM-FIR-1004.

Test item (test gas) Elapsed time (minutes) Blank Concentration (ppm) Sample concentration (ppm) Deodorization rate (%) Deodorization test (NH ₃ ) 0 500 500 - 30 480 200 58 60 470 170 64 90 450 150 67 120 440 140 68

Note 1) Blank: Measured without sample.

   2) Test piece: 8g

As shown in Table 3, it can be seen that the activated carbon-containing super medium according to the present invention exhibits a high deodorization rate with time.

In addition, as a result of measuring the amount of negative ions generated in the activated carbon super medium according to the present invention by an anion measuring device, the anion of 500 (ions / cc) was released, which was three times higher than that of general charcoal-containing super medium (Korean Patent Publication No. 2000-47735). .

Eco-friendly functional super medium according to the present invention is to separate the two wetlands of different paper properties to match the characteristics of the super medium to improve the low tear strength, elongation rate, dimensional safety and workability, which is a problem of paper, non-woven fabric, backing paper super medium It is an eco-friendly material with excellent physical properties and functions because it is overlapped in the wetland papermaking process, and it is produced by surface processing separately, and the manufacturing method is changed according to the application due to its high strength and dimensional stability. It can be used for various purposes such as paper, pansy, veneer base, board paper, and paper tape.

In particular, the activated carbon super medium according to the present invention is manufactured by laminating the new lipid super medium obtained by combining the chemical yarn and waste chemical yarn with the existing natural pulp and the activated carbon which is an environmentally friendly material, and has excellent strength and high adhesion with the grass. Not only can it be used as an excellent material to replace the existing super medium, but also by the strong adsorption power of activated carbon, it controls humidity in the room and removes harmful substances, steady supply of oxygen, antibacterial effect, anion release effect, and far infrared ray release effect. It is an environmentally friendly interior material that has the effect of creating a pleasant living environment and generating negative ions and far infrared rays. In addition, the conventional charcoal or activated carbon-containing super medium was bonded to the activated carbon on the wall due to the low strength and after that a period of time after the construction of super medium, the activated carbon-containing super medium according to the present invention has a high tear strength to perform two-step operation Integrate into one task, saving time and manpower.

Claims (14)

Prepared by mixing 100 parts by weight of a pulp mixture of 60 to 80% by weight of pulp and 40 to 20% by weight of synthetic wood pulp (SWP) and 3 to 16 parts by weight of cationic starch, casein, and polyvinyl alcohol (PVA) binder mixture. Top layer grassland; And Base layer paper prepared by mixing 100 parts by weight of a pulp mixture of 40 to 60% by weight of pulp and 60 to 40% by weight of waste synthetic fibers and 3 to 16 parts by weight of cationic starch, casein, and PVA binder mixture: Super medium made by overlapping. Activated carbon layer paper produced by mixing and dissociating pulp and activated carbon and then dispersing activated carbon in an amount of 30 to 60 g / m 2 using a wire; And 100 parts by weight of a pulp mixture of 40 to 60% by weight of pulp and 60 to 40% by weight of waste synthetic fibers and 3 to 16 parts by weight of cationic starch, casein, and PVA binder mixture were mixed to 30 to 60 g / m 2 using a bart. Basal Grassland made of: Activated carbon super medium consisting of two layers. The activated carbon super medium according to claim 2, wherein the activated carbon has a particle size of 100 to 400 mesh and an iodine adsorption force of 900 to 1,500 mg / g. The super medium according to claim 1, wherein a solution of styrene-butadiene rubber (SBR) latex and water 1: 2 to 2: 1 is sprayed onto the upper layer paper. The super medium according to claim 1, wherein the upper layer paper and the base layer paper each further comprise 1 to 3 parts by weight of alkyl ketene dimer (AKD), 1 to 6 parts by weight of epoxy resin, or a mixture thereof. The super medium according to claim 1, wherein a release agent is sprayed on the upper layer paper. The super medium according to claim 1 or 2, wherein the pulp is natural pulp having an altitude of 18 to 40 ° SR. According to claim 1 or 2, wherein the waste synthetic fibers are polyester, rayon, acrylic, nylon, or a mixture thereof, the waste synthetic fibers are 0.5 to 2% by weight alcohol or fatty acid based on the content of the waste synthetic fibers A super medium that has been pretreated with an ester type nonionic surfactant. 100 parts by weight of a pulp mixture of 60 to 80% by weight of pulp and 40 to 20% by weight of synthetic wood pulp (SWP); And 3 to 16 parts by weight of cationic starch, casein, and polyvinyl alcohol (PVA) binder mixture to prepare an upper layer paper from wire; 100 parts by weight of a pulp mixture of 40 to 60% by weight of pulp and 60 to 40% by weight of waste synthetic fibers; And 3-16 parts by weight of a cationic starch, casein, and polyvinyl alcohol (PVA) binder mixture to prepare a base layer paper with batt: Lamination of upper and lower grasslands in wetlands with a water content of 80-90%; And, Spraying a latex solution mixed with SBR latex and water 1: 2 to 2: 1 on the upper layer paper: Method for producing a paper consisting of steps. Pulp and activated carbon were mixed and dissociated, and then activated carbon was dispersed by dispersing activated carbon in an amount of 30 to 60 g / m 2 using a wire; 100 parts by weight of a pulp mixture of 40 to 60% by weight of pulp and 60 to 40% by weight of waste synthetic fibers and 3 to 16 parts by weight of cationic starch, casein, and PVA binder mixture were mixed to prepare a base layer paper with batt; The activated carbon bed and base bed are laminated in a wetland state having a water content of 80 to 90%: Spraying a latex solution of SBR latex and water 1: 2 to 2: 1 on the base layer paper: Method for producing a paper consisting of steps. The method of claim 9, wherein the upper layer paper and the base paper are each 1 to 3 parts by weight of alkyl ketene dimer (AKD), 1 to 6 parts by weight of epoxy resin, or a mixture thereof. The method of claim 9 or 10, further comprising spraying a release agent after the latex solution spraying step. The method according to claim 9 or 10, wherein the pulp is a natural pulp of 18-40 ° SR high altitude, the waste synthetic fibers are polyester, rayon, acrylic, nylon, or a mixture thereof, the content of waste synthetic fibers The method of manufacturing paper further comprising the step of pretreatment by mixing with 0.5 to 2% by weight of alcohol or fatty acid ester type nonionic surfactant on the basis. A paper product made according to claim 9 or 10, wherein the product is used as a paper, fan paper, strip paper, wallpaper paper, disposable wipes, veneer base, board paper, or paper tape paper.

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