KR100796954B1 - A natural wall paper and process preparation thereof using solubility in water synthetic resin - Google Patents

Abstract

The present invention relates to an environmentally friendly wallpaper using a water-soluble synthetic resin that does not generate environmental hormones harmful to the human body and a method for producing the same, including 10 to 15% by weight of water, 4.77 to 10% by weight of aqueous alcohol and isobutane and isopentane. 4-7% by weight of water-based foaming agent, 5-7% by weight of TiO2, 0.1-0.5% by weight of emulsifier, 4-7% by weight of talc and mild hair powder, 1-3% by weight of pulp powder, lightweight microcell and spherical pillar (Filler) 2.99 to 4.9 wt%, 15 to 40 wt% of water-soluble synthetic resin, 25 to 35 wt% of CaCO₃, 2 to 5 wt% of far-infrared radiation substance, 0.01 to 0.1 wt% of ammonia water, 0.1 to 0.5 wt% of thickener, 0.03 to 0.5 defoamer Aqueous acryl sol (Sol) mixture is prepared by mixing in a ratio of 1% by weight to 1% by weight and a dispersant,

The aqueous acryl sol mixture is continuously mixed by the impeller so as to maintain a uniform mixing rate, and then applied to the upper surface of the paper supplied by the feeder, filtered and then supplied by the feeder,

In the conventional water-soluble foamed wall paper manufacturing method of foaming and drying by passing the base paper coated with the above-mentioned aqueous acrylic sol mixture through a chamber of 180 to 220 ℃,

A first step of cooling the foamed base paper through three stage cooling rollers formed in the cooler,

A second step of winding in a winding machine via a checker to check whether the thickness of the cooled paper is in the range of 0.5 to 0.8 mm;

The rolled base paper is supplied to a printing machine in which water-based ink is buried in the copper plate roller while shaking is prevented when it passes through the de-energizer with the pins adjusted by adjusting the left / right center and tension. A third step of printing,

A fourth step of drying the raw paper printed in the above for 30 seconds in a chamber in which hot air of 175 to 185 ° C is generated, and

The environmental hormone is formed by the fifth step of embossing the dried paper by applying a pressure of 10 to 60 kg / ㎠ in an iron roller of an embossing machine as in the prior art and then cooling it in a cooler (three-stage cooling roller). Eco-friendly wallpaper that does not occur can be obtained.

Wallpaper, water-based synthetic resin, water-based ink, foam, eco-friendly

Description

Eco-friendly wallpaper using water-soluble synthetic resin and its manufacturing method {A natural wall paper and process preparation etc using solubility in water synthetic resin}

1 is a cross-sectional view of the wallpaper of the present invention

2 is a cross-sectional view of another wallpaper of the present invention

<Description of Symbols for Major Parts of Drawings>

1: base 2: water-soluble synthetic resin foaming unit

3: aqueous ink pattern 4: embossing 5: biodegradable nonwoven fabric

The present invention does not use oil-based ink containing harmful ingredients to the human body used in silk (PVC) wallpaper on the paper base for manufacturing wallpaper, as conventionally, even bright colors using water-based synthetic resins and water-based ink It has a durable, environmentally friendly wallpaper, such as chemical resistance, abrasion resistance, pollution resistance, fire resistance, and a manufacturing method thereof.

Polyvinyl chloride (PVC) foam wallpaper, as in Korean Patent Publication No. 1992-0002824, which is generally produced, is formed by embossing with a pattern and deep indentation just above the base paper. The prints are projected and the other parts are translucent and have no clearness, allowing printing and embossing to achieve visual harmony.

However, the above PVC wallpaper is required to add a plasticizer DOP (Di Octyl Phthalate) in order to prevent the thermal decomposition of the PVC and to give elasticity, the added DOP is to form the PVC in a gel (Gel) state at a high temperature In addition, it improves the solvation and fluidity of PVC, enabling segment micro brown of PVC molecules at high temperature of 180 ~ 220 ℃, and maintaining flexible elasticity at room temperature after PVC sol is cured. Will play a useful role.

However, when manufacturing PVC wallpaper, DOP is generated at foaming temperature of 150 ~ 205 ℃, which hinders working environment. Also, manufactured wallpaper has volatilized DOP at room temperature after use. This DOP is a substance that is regulated in Europe and Japan because the DOP is capable of generating environmental hormones that are harmful to the human body. I'm evading.

In addition, the PVC wallpaper can not use the water-based ink, so you need to use oil-based ink can not escape from the environmental hormones generated in the oil-based ink.

As another example, it is known that a wallpaper which is harmless to a human body can be produced by using a tona for water-soluble acrylic foam wallpaper.

However, in order to manufacture the aqueous foam wallpaper using the existing PVC wallpaper production system, in the comma coater, apply the toner for the aqueous foam wallpaper to the desired thickness within the range of 0.5 to 0.8 mm in the first drying (gelling operation). Mercury has a phenomenon that fluidity is lowered compared to oily, and the central part of the paper is struck by moisture, or the left and right sides of the paper are centered (dried), and the gelling (semi-drying) operation and In the foaming process after the printing process, the retention rate of the gel state is lowered, and the finished product has a lower surface hardness than oily at room temperature, so the scratchability is weakened. There is a problem that the embossing may be compressed and collapsed.
In addition, the water-soluble foam wallpaper using water-soluble synthetic resins known in the recent Korean Utility Model Publication No. 335200, 5-10% by weight of water, 5-10% by weight of methane and aqueous alcohol, aqueous of isobutane and isopentane system 2 to 7% by weight of blowing agent, 2 to 5% by weight of TiO ₂ , 0.1 to 0.5% by weight of emulsifier, 5 to 10% by weight of talc and soft wool, 1 to 3% by weight of pulp powder, lightweight microcell and spherical pillar 2 ~ 10% by weight, 15 ~ 40% by weight of synthetic resin, 20 ~ 30% by weight of CaCO ₃ , 2 ~ 5% by weight of far-infrared radiation substance such as jade, 0.01 ~ 0.1% by weight of ammonia, 0.1 ~ 0.2% by weight of thickener, 0.1 ~ 0.5% by weight of dispersant %, Anti-foaming agent 0.1 to 0.5% by weight of the coating composition coated on the wallpaper paper and then coated and printed to prepare an aqueous foam wallpaper,
Alternatively, the nonwoven fabric is laminated on the upper surface of the base paper with an adhesive of a hot sealing function, the composition is coated on the upper surface of the nonwoven fabric, and then top coated on the top surface of the base paper, and the top coating is printed on the top surface of the base to produce an aqueous foamed wallpaper.
The wallpaper is an environmentally friendly wallpaper to suppress the production of environmental hormones, non-woven fabric has the sound-absorbing, thermal insulation, heat insulation effect.

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An object of the present invention is to improve the conventional PVC wallpaper production system in a suitable method for water-soluble synthetic resins to solve the problems that may occur in the product in water-soluble synthetic resins.

In order to achieve the object of the present invention, the aqueous acrylic sol (Sol) is mixed with water and continuously mixed (mixing) while adjusting the viscosity and applied to the upper surface of the paper paper supplied, and passed through a drying chamber (Oven) and dried It cools through a cooler, and forms a pattern by repeatedly printing and drying it according to the chromaticity as an aqueous ink on a base paper by a copper plate roller with a pattern carved, and by printing the printed paper through the inside of the chamber by hot air in the chamber. After drying, it can be solved by the present invention by the manufacturing process of embossing while passing through the molded roller emboss (Embo), the present invention will be described in detail below.

The present invention generally uses a white paper used as wallpaper, 10 to 15% by weight of water, 4.77 to 10% by weight of methane and aqueous alcohol, 4 to 7% by weight of isobutane and isopentane based aqueous foaming agent, TiO₂5 -7% by weight, emulsifier 0.1-0.5% by weight, talc and 4-7% by weight of loose hair powder, 1-3% by weight of pulp powder, 2.99-4.9% by weight of lightweight microcells and spherical fillers, 15-40 wt% of water-soluble synthetic resin, 25-35 wt% of CaCO₃, 2-5 wt% of far-infrared radiation substance, 0.01-0.1 wt% of ammonia water, 0.1-0.5 wt% of thickener, 0.03-0.5 wt% of antifoaming agent, 1-2 wt% of dispersant By mixing the ratio of to form an aqueous acrylic sol (Sol) mixture,

The aqueous acryl sol mixture is continuously mixed by the impeller so as to maintain a uniform mixing rate, and then applied to the upper surface of the paper supplied by the feeder, filtered and then supplied by the feeder,

In the conventional water-soluble foamed wall paper manufacturing method of foaming and drying by passing the base paper coated with the aqueous acrylic sol mixture through a chamber of 180 ~ 220 ℃,

A first step of cooling the foamed base paper through three stage cooling rollers formed in the cooler,

A second step of winding in a winding machine via a checker to check whether the thickness of the cooled paper is in the range of 0.5 to 0.8 mm;

The rolled base paper is supplied to a printing machine in which water-based ink is buried in the copper plate roller while shaking is prevented when it passes through the de-energizer with the pins adjusted by adjusting the left / right center and tension. A third step of printing,

A fourth step of drying the raw paper printed in the above for 30 seconds in a chamber in which hot air of 175 to 185 ° C is generated, and

As an iron roller of an emboss molding machine which is tolerated in the above-mentioned dried paper, an environmental hormone is formed by a fifth step of embossing by applying a pressure of 10 to 60 kg / cm 2 and then cooling it in a cooler (three-stage cooling roller). Eco-friendly wallpaper that does not occur can be obtained.

In the above water-soluble synthetic resins, acrylic, ethylene vinyl acetate (EVA), urethane-based resins, etc., in which fluidity and gel phenomenon disappear due to heat after drying, are used. Gases such as isobutane and isopentane filled in the water-based foaming agent (GAS) are broken up by impeller impact when compounding the mixture, or part of the foaming agent is prematurely foamed during drying (gelling) of the applied mixture. This is because it promotes coagulation and tangle of water-soluble synthetic resins.

Therefore, by adding 0.1 to 0.5% by weight of an emulsifier such as a nonionic emulsifier, an anionic emulsifier, a cationic emulsifier, an amphoteric emulsifier can improve the fluidity and gel development.

In addition, mixing 4.77 to 10% by weight of methanol and aqueous alcohol in the above means that when the mixture is applied to the base, the water penetration rate is high and the evaporation speed is increased to prevent the central deflection and the left and right curls from occurring. It is to.

In order to prevent the methanol and the aqueous alcohol from inducing shock with the aqueous synthetic resin, 0.01 to 0.1% by weight of ammonia water is added so that the pH is about 7 to 8.

In the above, calcium carbonate (CaCO₃) and titanium oxide (TiO₂) and the like are intended to increase the surface hardness, but there is a limit to increase the surface hardness with only the above components, Talc or flaky powder, pulp powder And the like to further increase the surface hardness.

The antifoaming agent used in the above is a silicone-based and non-silicone-based, and the thickener is cellulose-type and acrylic-based is used to facilitate the application work by improving the foaming force and increase the solubility in water when the mixture is applied to the base paper As the dispersant, special anionic and anionic complexes and special bioion complexes are used.

2.99 to 4.9 wt% of the lightweight microcell and the lightweight spherical inorganic filler (3M Co., Ltd. product name: glass bubble) are mixed in the embossing process by breaking the cell and spherical shape under high pressure during embossing. The embossing moldability can be improved by lowering the restoring force after embossing, and by setting the TG (glass transition temperature) of the synthetic resin to minus 40 to 50 ° C.

Mixing 2 to 5% by weight of the far-infrared radiation material (illite, jade, ganbanite, ceramic, feldspar, zeolite, germanium) promotes drying in the inner layer by the radiant heat of the far-infrared radiation material, so that This is to improve the phenomenon that the surface of the coating surface is dried quickly by high temperature heat during drying, resulting in swelling of cracks on the coated surface.

Water-based ink for printing is water (distilled water) and ethanol as a solvent, contains a small amount of volatile organic compounds (VOC) harmful to the human body and is environmentally friendly, formaldehyde is not detected.

In order to increase the surface hardness of the dried paper, the aqueous resin and the aqueous urethane-based synthetic resin are mixed alone or in a mixture of 2-5% by weight of silica sol and mica, and coated at about 10-30 g / m 2, and the printing process After finishing, it can be coated on top of printing layer. At this time, 2 ~ 10% by weight of high temperature aqueous wax (paraffin type, PE type, carnava, etc.), aqueous melamine type resin, silicone type water repellent, etc. are added. The applied coating solution.

The base paper used in the wallpaper manufacturing process is generally used for flame-retardant paper, 10 to 15% by weight of water, 4.77 to 10% by weight of methane and aqueous alcohol, water-based foaming agent to impart flame retardancy to the mixture to be applied 4 to 7 wt%, TiO2 5 to 10 wt%, emulsifier 0.1 to 0.5 wt%, pulp powder 1 to 3 wt%, spherical filler 2.99 to 4.9 wt%, water soluble synthetic resin 15 to 40 wt%, CaCO₃ 5 to 15 wt%, 1 to 3% by weight of far-infrared radiation substance, 0.01 to 0.1% by weight of ammonia, 0.1 to 0.5% by weight of thickener, 0.03 to 0.5% by weight of antifoaming agent, 1 to 2% by weight of dispersant, and 20 to 30% by weight of flame retardant (aluminum hydroxide) It is similar to the conventional art to impart flame retardancy by mixing and coating on a wallpaper.

In order to improve the embossing effect and to provide sound absorption, heat insulation, and thermal insulation to the wallpaper, before applying the aqueous synthetic resin mixture to the base paper, the base paper and the biodegradable nonwoven fabric 5 are laminated at a ratio of 150 to 500 g / m 2, and laminated. When the gelling (semi-drying) aqueous synthetic resin mixture or general adhesive is used as an adhesive, but after lamination, the aqueous synthetic resin mixture is applied to the base paper and dried, the adhesive layer in the state of the film on the base paper and the nonwoven fabric during drying is formed. There is a problem in that the surface is hard to be transferred to the ground by blocking the moisture (water cannot evaporate up and down at the same time during rapid drying) and the surface is hardened, causing cracks and swelling on the coated surface.

Thus, in order to solve the above problems, the resin of the aqueous synthetic resin mixture applied to the base paper before the adhesive is melted by heat and has adhesiveness by laminating the resin of the EVA series hot sealing (heat adhesion) function as an adhesive The prior art is used to prevent the phenomenon of cracking or swelling of the gelling (semi-drying) surface upon drying by transition to.

The wallpaper produced by the first to fifth process is completed by winding and packing with a winding (generally 1,560 cm) after cutting to the standard in the knife knife (Knife) and inspected by the inspection table.

The wallpaper is formed of a foamed portion (2) coated with a water-soluble synthetic resin mixture on the upper surface of the base paper (1) made of white paper, and a water-based ink of 1 to 6 degrees on the upper surface of the water-soluble synthetic resin foam (2) (3) is formed, and the upper surface of the pattern (3) is embossed (4).

The present invention is to produce a foam wallpaper by coating an aqueous synthetic resin (especially an aqueous acrylic resin) and an aqueous ink on the base paper of the wallpaper to form formaldehyde and totally volatile organic substances (TVOC), which are generally harmful to the human body containing PVC foam wallpaper ) Is not detected and thus has an effect that can be completely escaped from the harmful environmental hormones, it is confirmed by the comparison table of <Table 1>.

TABLE 1

division Main raw material Ink raw materials in production During production After construction Incineration Silk (PVC) wallpaper PVC + DOP Use oily solvents such as MEK and toluene and oily ink Harmful VOC release and carcinogens, allergens Environmental hormone release and indoor air pollution Dioxin generation Pollution-free wallpaper   Water soluble acrylic resin Use of water, ethanol and aqueous ink Harmful VOC Not Detected No harmful substances detected, far infrared radiation Only white ash remains

In addition, the wallpaper of the present invention was tested by the KSM7305-2 test method at the Korea Institute for Living Environment Testing, it is confirmed by <Table 2> that it meets the KS quality standards.

TABLE 2

Test Items unit KS Quality Standard Natural beauty Remarks Daylight fastness class Level 4 or higher 4-5 class Friction fastness class Level 4 or higher 4-5 class Concealable class Level 3 or higher Grade 4 Constructability No lifting, no peeling No lifting, no peeling Wet strength kgf / 1.5m 0.2 or more 1.73 Formaldehyde emissions mg / 1 2 or less Not detected

Claims (8)

10-15 wt% water, 4.77-10 wt% methane and aqueous alcohol, 4-7 wt% isobutane and isopentane based aqueous foaming agent, 5-7 wt% TiO 2, 0.1-0.5 wt% emulsifier, Talc and 4-7% by weight, 1-3% by weight of pulp powder, 2.99-4.9% by weight of lightweight microcells and spherical fillers, 15-40% by weight of water-soluble synthetic resin, 25-35% by weight of CaCO₃, far-infrared radiation substance 2-5% by weight, ammonia water 0.01-0.1% by weight, thickener 0.1-0.5% by weight, antifoaming agent 0.03-0.5% by weight, dispersant 1-2% by weight to form an aqueous acrylic sol (Sol) mixture, The aqueous acryl sol mixture is continuously mixed by the impeller so as to maintain a uniform mixing rate, and then applied to the upper surface of the paper supplied by the feeder, filtered and then supplied by the feeder, In the conventional water-soluble foamed wall paper manufacturing method of foaming and drying by passing the base paper coated with the above-mentioned aqueous acrylic sol mixture through a chamber of 180 to 220 ℃, A first step of cooling the foamed base paper through three stage cooling rollers formed in the cooler, A second step of winding in a winding machine through a checker to check whether the thickness of the cooled paper is in the range of 0.5 to 0.8 cm; The rolled base paper is supplied to a printing machine in which water-based ink is buried in the copper plate roller while shaking is prevented when it passes through the de-energizer with the pins adjusted by adjusting the left / right center and tension. A third step of printing, A fourth step of drying the raw paper printed in the above for 30 seconds in a chamber in which hot air of 175 to 185 ° C is generated, and Characterized in that the fifth step of cooling the cooler (three-stage cooling roller) after embossing by applying a pressure of 10 ~ 60kg / ㎠ in the iron roller of the embossing machine tolerated in the dry Eco-friendly wallpaper manufacturing method using a water-soluble synthetic resin. delete delete The water-soluble synthetic resin mixture is coated on the base paper 1 of the white paper as a wallpaper manufactured by the manufacturing process of claim 1 to form a foam part 2, and an aqueous ink of 1 to 6 degrees is formed on the upper surface of the foam part 2 ( 3) and the pattern (3) is eco-friendly wallpaper using a water-soluble synthetic resin, characterized in that the embossed (4). The method of claim 4, wherein Eco-friendly wallpaper using a water-soluble synthetic resin, characterized in that the biodegradable nonwoven fabric (5) is 150 to 500g / ㎡ laminated on the lower surface of the base paper (1) to improve the embossing effect and to have sound absorption, heat insulation, heat insulation. delete delete delete

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