KR20240021517A - Non-slip adhesive for paper packaging and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an anti-slip adhesive for paper packaging materials, and more specifically, to a water-based acrylic adhesive containing a carboxymethylcellulose-based thickener, an acrylic thickener, an acrylic binder, a surfactant, and water, wherein the adhesive has a viscosity of 4500 to 5500. cps and a tensile shear adhesive strength of at least 150 N/cm ² Disclosed is an anti-slip adhesive for paper packaging.

Description

Non-slip adhesive for paper packaging and manufacturing method thereof}

The present invention relates to an anti-slip adhesive for paper packaging materials and a method for manufacturing the same.

In the manufacturing field, material and human losses are significant due to collapse of the load during packaging, transportation, and storage, so the industry uses various packaging systems to minimize damage to safety and quality. In general, the anti-slip packaging system widely used in industry is a method of tying the loaded cargo using polyethylene stretched film, polypropylene bands, etc. after loading the product, or automatically packaging it using a robot, and packaging the product at the transport stage after packaging the product. The method used is to apply anti-slip adhesive to the surface and then stack, store, and transport it on a pallet. In the former case, the use of expensive auxiliary materials such as polyethylene stretched film and polypropylene bands requires a lot of cost for replacement, and it causes environmental pollution problems due to separate installation space and the generation of a large amount of waste after use, so it is a petrochemical and synthetic resin manufacturer. In most cases, the anti-slip adhesive application method is used.

The anti-slip adhesive used by petrochemical and synthetic resin manufacturers is an oil-soluble adhesive based on dichloromethane (MC). Dichloromethane is a solvent mainly used in solvent-based adhesives due to its low risk of fire and explosion compared to its high volatility and high solubility, but it is currently a carcinogen. Because it is registered as a sexually suspect substance, its use is expected to be restricted in the future. Currently, demand companies are requesting the development of an eco-friendly anti-slip adhesive that has high volatility, low risk of fire and explosion, maintains existing workability and lamination stability, and does not contain substances harmful to the human body.

In this regard, 'Korea Patent No. 10-1548115' relates to an eco-friendly anti-slip adhesive composition and an adhesive containing the same, using 1,1-dichloro-1-fluoroethane and n-propyl bromide as solvents, and thermoplastic adhesive composition. An eco-friendly adhesive was manufactured using polymer and adhesion resin. However, due to the high viscosity, it is difficult to use as a spray type, the high solid content causes contamination of the product after peeling, and there is a problem of low economic feasibility.

In addition, anti-slip adhesives are largely classified into two types: hot melt adhesives mainly used in paper box packaging, and rubber adhesives used in polyolefin-based (polypropylene, polyethylene, etc.) film packaging materials. In the case of hot melt adhesives, they are widely used due to their strong initial adhesion and high product viscosity. However, due to the high strength during peeling, product separation is not easy and peeling contamination occurs frequently, which reduces marketability and requires expensive equipment suitable for hot melt characteristics, which makes it difficult to separate the product. There is a problem of poor economic feasibility. In addition, solvent-based adhesives such as rubber and latex overcome the shortcomings of hot melt and have good physical properties, but because they use organic solvents such as BTEX (Benzene, Toluene, Ethyl Benzene, Xylene) and ketones, they contain volatile organic compounds (VOCs). ) is a problem, and in the case of latex, there is a disadvantage in that the cost of using a separate dispersant is added due to the frequent occurrence of precipitates where ingredients clump together during the manufacturing process or use.

Therefore, it can be applied to paper-based packaging such as kraft paper, bags, and boxes (hereinafter referred to as 'paper packaging materials'), and it is required to have excellent initial adhesion and not cause contamination during peeling like hot melt or solvent-based adhesives. It is becoming. It is also required to prevent the generation of volatile organic compounds (VOCs) caused by solvents or the prints on the surface of the paper bag from being erased by solvents. Moreover, in the case of paper materials, moisture absorption can vary depending on the thickness or surface coating, so it is necessary to have consistent adhesive performance applicable to various paper materials.

KR 10-1548115

Accordingly, focusing on the above technical needs, the present inventors have developed a water-based, non-slip adhesive for acrylic paper packaging materials that can be applied to various paper materials by controlling the hygroscopicity of water and controlling the viscosity and adhesive strength while being water-based. developed and completed the present invention.

Therefore, the present invention aims to provide a non-slip adhesive for paper packaging materials as a technical solution.

In addition, the present invention aims to provide a method for manufacturing an anti-slip adhesive for paper packaging materials as a technical solution.

In order to solve the above-described technical problem, the present invention is a water-based acrylic adhesive containing a cellulose-based thickener, an acrylic thickener, an acrylic binder, a surfactant, and water,

The adhesive has a viscosity of 4500 to 5500 cps and a tensile shear adhesive strength of at least 150 N/cm ² , providing an anti-slip adhesive for paper packaging materials.

In addition, in the present invention, the adhesive is characterized in that the solid content is 4 to 8% by weight.

In addition, in the present invention, the adhesive has a solid content of 16 to 20% by weight and is characterized as an uncoated paper packaging material.

Additionally, in the present invention, the adhesive has a solid content of 2.5% by weight or less and is characterized as a coated paper packaging material.

In addition, in order to solve the other technical problems, the present invention includes the steps of preparing a first mixture by dissolving a cellulose-based thickener in water, which is the main solvent, and stirring it;

Preparing a second mixture by sequentially adding and stirring an acrylic binder, a disinfectant, and a non-ionic surfactant to the first mixture to dissolve them;

Preparing a third mixture by adding and stirring an acrylic thickener to the second mixture to dissolve it; and

It includes the step of preparing a water-based acrylic adhesive by adjusting the viscosity with the alcohol-based cosolvent of the third mixture,

The adhesive has a viscosity adjusted to 4500 to 5500 cps and a tensile shear adhesive strength of at least 150 N/cm ^2. A method for manufacturing an anti-slip adhesive for paper packaging materials is provided.

In the present invention, the step of preparing the second mixture is to dissolve the acrylic binder, disinfectant, and nonionic surfactant in the first mixture by sequentially adding and stirring, and then adding water-dispersed ester rosin and stirring. It is characterized by controlling the solid content by dissolving. In addition, the adhesive is characterized in that the solid content is adjusted to 4 to 8% by weight or 16 to 20% by weight.

According to the present invention described above, as a water-based acrylic adhesive, the solid content can be adjusted according to the hygroscopicity of the paper packaging material as the adherend, so it can be applied to various paper packaging materials. Through this, a certain level of adhesive strength is achieved, and in particular, it is higher than the vertical peel strength. It is possible to have excellent tensile shear adhesive strength and provide an anti-slip effect without peeling contamination. Moreover, it can be cured at room temperature, which increases the economic efficiency of the process. It is manufactured in a one-component form and does not use organic solvents, so it can be manufactured and applied in an environmentally friendly manner.

Figure 1 shows a manufacturing process diagram according to an embodiment of the present invention.
Figure 2 shows adhesive samples of Grade A, Grade B, and Grade C manufactured according to an embodiment of the present invention.
Figure 3 shows photographs immediately after application and 30 minutes after application of a Grade A adhesive sample prepared according to an embodiment of the present invention.
Figure 4 shows the results of a self-applicability test using a Grade A adhesive manufactured according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components.

The terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, reactions, components, or a combination thereof described in the specification, but are not intended to indicate the presence of one or more other features or numbers. It should be understood that this does not exclude in advance the presence or addition of steps, reactions, components or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

According to one aspect of the present invention, the present invention is a water-based acrylic adhesive containing a cellulose-based thickener, an acrylic thickener, an acrylic binder, a surfactant and water, wherein the adhesive has a viscosity of 4500 to 5500 cps and a tensile shear adhesive strength of at least Provided is an anti-slip adhesive for paper packaging, characterized in that 150 N/cm ² . When applying an anti-slip adhesive, the physical properties between the adherend and the adhesive must be considered. If the adhesive strength is good, not only will the surface of the packaging material be torn or difficult to separate when the loaded packaging material is removed, but the packaging surface will be severely contaminated, damaging the marketability of the product. , Conversely, if the adhesive strength is weak, the loaded product may slip, making transportation and storage of the product difficult, so an appropriate level of adhesive strength is required. Therefore, as described above, the adhesive of the present invention is characterized by a tensile shear adhesive strength of at least 150 N/cm2. This tensile shear adhesive strength can be satisfied within 30 minutes and 1 day after application, and is superior to the vertical peel strength, preventing the collapse of the load on the pallet. Accordingly, it can ultimately be applied as an anti-slip adhesive that can replace packaging films.

In addition, since the present invention maintains the initial adhesive strength as described above and has a low vertical peel strength, there is no contamination or scattering of residue due to the adhesive when the laminated product is removed, and the packaging can be easily peeled off without damaging the surface.

In addition, the present invention is particularly applicable to paper packaging materials, and the moisture absorption of the surface of paper packaging materials may vary depending on the thickness of the paper and whether or not the surface is coated. Therefore, consistent adhesive performance can be achieved only by controlling the viscosity and solid content depending on the surface material of the paper packaging material. That is, in the case of paper packaging materials that are not coated and have little hygroscopicity, hygroscopicity is controlled by having a high solids content, and in materials with little hygroscopicity, the solids content must be kept low to maintain tensile shear adhesive strength. In cases where there is some hygroscopicity, it is necessary to maintain the solid content at a constant level. Therefore, in the present invention, the adhesive preferably has a solid content of 4 to 8% by weight so that it can be applied to paper packaging materials that generally have hygroscopic properties. Additionally, in the case of uncoated paper packaging with high hygroscopicity, the solids content may be 16 to 20% by weight, and in the case of coated paper packaging with little hygroscopicity, the solids content is preferably 2.5% by weight or less. When the solid content is at the above level, the tensile shear adhesive strength can be maintained at 150 N/cm ² with adhesive performance equivalent to or higher than that of existing organic solvent-based adhesives.

In addition, the present invention is suitable for paper packaging materials and is characterized by a viscosity of at least 4,000 cps to prevent the adhesive from flowing when applying the adhesive. At this time, it is more preferable that the viscosity is 4500 to 5500 cps so that the adhesive can be easily applied without excessive clumping. In addition, the anti-slip adhesive of the present invention is a water-based acrylic adhesive that is safe from fire and explosion during the application process. It is easy to use as a one-component type and leaves no residual solvent, so it does not affect the surrounding environment and does not emit VOCs. am.

At this time, the cellulose-based thickener is preferably selected from methyl-based cellulose, ethyl-based cellulose, and propyl-based cellulose. More specific examples include methyl cellulose such as methylcellulose, hydroxypropylmethylcellulose (HPMC), and carboxymethylcellulose; Ethyl cellulose such as ethyl cellulose, hydroxyethyl cellulose, and carboxyethyl cellulose; A cellulose-based thickener selected from propyl-based cellulose such as hydroxypropylcellulose can be used. In a preferred embodiment of the present invention, carboxymethylcellulose was used.

The acrylic binder is acrylic acid, methyl acrylic acid, 2-ethylhexyl acrylic acid, 2-hydroxyethyl methacrylic acid, N-butyl acrylate, methacrylic acid, ethyl acrylic acid, methyl methacrylic acid, vinyl acetate, cyclohexyl methacrylic acid, butyl methacrylic acid. , and 2-carboxylethylacrylic acid. Preferably, it may include one or more selected from the group consisting of methyl methacrylic acid, ethyl acrylic acid, methyl acrylic acid, 2-hydroxyethyl methacrylic acid, and methacrylic acid.

Additionally, the acrylic binder is characterized by copolymerization of at least two different acrylic monomers. Preferably, a functional acrylic binder containing a multifunctional monomer with excellent affinity for the polymer resin can be used. Additionally, the acrylic binder can provide excellent initial adhesion.

In the present invention, the acrylic binder is synthesized by a free radical polymerization method using an initiator, and the initiator may include one or more selected from the group consisting of benzoyl peroxide, organic peroxide, and azo compound. In addition, acrylic binders are characterized by being manufactured through free radical polymerization of two or more types of monomers within 40% to 70% by weight.

In addition, the acrylic thickener is preferably one type or a mixture of two or more types selected from polyacrylamide, sodium acrylate, polyethylene oxide, and a copolymer of acrylamide and sodium acrylate. In the present invention, the acrylic thickener is mainly composed of polyacrylamide and has the advantage of low setting delay and low foam generation.

The surfactants also include anionic, nonionic, amphoteric, and cationic surfactants, as well as mixtures thereof. Most commonly, anionic and nonionic surfactants and mixtures thereof may be used.

The anionic surfactants are well known in the art and include sodium lauryl sulfate, sodium dodecyl benzene sulfonate, sodium (C6-C16) alkyl phenoxy benzene sulfonate, disodium (C6-C16) alkyl phenoxy Benzene Sulfonate, Disodium (C6-C16) Di-Alkyl Phenoxy Benzene Sulfonate, Disodium Laureth-3 Sulfosuccinate, Sodium Dioctyl Sulfosuccinate, Sodium Di-sec-Butyl Naphthalene Sulfonate, Di Including, but not limited to, sodium dodecyl diphenyl ether sulfonate, disodium n-octadecyl sulfosuccinate, phosphate esters of branched alcohol ethoxylates, etc.

The nonionic surfactants are well known in the field of polymer technology and include, without limitation, caprylic alcohol ethoxylate, lauryl alcohol ethoxylate, myristyl alcohol ethoxylate, cetyl alcohol ethoxylate, and stearyl alcohol ethoxylate. linear or branched C8-C30 fatty alcohol ethoxylates such as cetearyl alcohol ethoxylate, sterol ethoxylate, oleyl alcohol ethoxylate, and behenyl alcohol ethoxylate; alkylphenol alkoxylates such as octylphenol ethoxylate; and polyoxyethylene polyoxypropylene block copolymer. Additional fatty alcohol ethoxylates suitable as non-ionic surfactants are described below. Other useful nonionic surfactants include C8-C22 fatty acid esters of polyoxyethylene glycols, ethoxylated mono- and diglycerides, sorbitan esters and ethoxylated sorbitan esters, C8-C22 fatty acid glycol esters, ethylene oxide and block copolymers of propylene oxide, and combinations thereof. The number of ethylene oxide units in each of the aforementioned ethoxylates may range from 2 or more in one aspect, and from 2 to about 150 in another aspect.

Optionally, other emulsion polymerization additives and processing aids well known in the art of emulsion polymerization technology, such as auxiliary emulsifiers, solvents, buffering agents, chelating agents, inorganic electrolytes, polymerizable stabilizers, and pH adjusters, may be further included.

The anti-slip adhesive for paper packaging materials of the present invention includes the steps of preparing a first mixture by dissolving a cellulose-based thickener in water as the main solvent and stirring it; Preparing a second mixture by sequentially adding and stirring an acrylic binder, a disinfectant, and a non-ionic surfactant to the first mixture to dissolve them; Preparing a third mixture by adding and stirring an acrylic thickener to the second mixture to dissolve it; and preparing a water-based acrylic adhesive by adjusting the viscosity with the alcohol-based co-solvent of the third mixture.

The adhesive manufactured by the above method is manufactured to have a constant adhesive strength by controlling the solid content so that it can be applied to various paper packaging materials as described above. In the case of a coated paper packaging material with little hygroscopicity, the solid content is set to 2.5% by weight or less, and if the solid content is to be increased, the step of preparing the second mixture involves adding an acrylic binder, a disinfectant, and The solid content can be adjusted by sequentially adding and stirring the nonionic surfactant to dissolve it, then adding more water-dispersed ester rosin and stirring it to dissolve it. At this time, the adhesive is characterized in that the solid content is adjusted to 4 to 8% by weight or 16 to 20% by weight. That is, in general, when applied to paper packaging materials with hygroscopicity, the solids content is adjusted to 4 to 8% by weight, and when applied to uncoated paper packaging materials with high hygroscopicity, the solids content is adjusted to 16 to 20% by weight.

At this time, the ester rosin is a resin that provides adhesiveness, and water-soluble ester rosin that is dispersed in water is used so that it can completely dissolve in the water-based acrylic adhesive and provide adhesiveness. In one embodiment of the present invention, water-dispersed ester rosin prepared by reacting a surfactant, an ester resin, and a solvent to emulsify and disperse was used.

When the solid content is at the above level, the adhesive performance is equivalent to or higher than that of existing organic solvent-based adhesives, and the tensile shear adhesive strength can be maintained at 150 N/cm ² .

In addition, the auxiliary solvent used in the viscosity adjustment includes one or more solvents capable of controlling evaporation selected from butoxyethanol, ethoxyethanol, isopropyl alcohol, ethanol, methanol, methylal, ethylal, and butylalcohol. Alcohol-based solvents can be used.

In this way, according to the present invention, as a water-based acrylic adhesive, the solid content can be adjusted according to the hygroscopicity of the paper packaging material as the adherend, so it can be applied to various paper packaging materials. Through this, a certain level of adhesive strength is achieved, and in particular, tensile strength is superior to the vertical peel strength. By being able to have shear adhesive strength, it is possible to provide an anti-slip effect without peeling contamination. Moreover, it can be cured at room temperature, increasing the economic efficiency of the process, and is manufactured in a one-component form and does not use organic solvents, making it possible to manufacture and apply it in an environmentally friendly manner.

Hereinafter, the present invention will be described in detail through examples, but the present invention is not limited thereto.

<Example>

First, the acrylic binder and water-dispersed ester rosin were prepared as follows.

Manufacturing of acrylic binder

For the acrylic binder, 115 g of methyl methacrylic acid, 40 g of ethyl acrylic acid, 1.5 g of methacrylic acid, and 1.2 g of nonionic surfactant were added to 100 g of solvent and stirred. The stirred solution was vacuumed using a pressure reducer to remove oxygen, and 0.2 g of ammonium sulfate, an initiator, was added to the sample under a nitrogen atmosphere and polymerized at 80°C for 8 hours to prepare an acrylic binder.

Water dispersion ester rosin production

For water-dispersed ester rosin, 2.0 g of surfactant, 35 g of ester resin, 100 g of solvent, 0.1 g of pH adjuster, and 0.1 g of leveling agent were added and stirred. The stirred solution was vacuumed using a pressure reducer to remove oxygen, and water-dispersed ester rosin was prepared by emulsifying and dispersing at 85°C for 8 hours under high-speed stirring.

Next, a water-based acrylic adhesive was prepared using the acrylic binder and water-dispersed ester rosin prepared above by the following method.

Manufacture of water-based acrylic anti-slip adhesive

(1) With water added as the main solvent, add the cellulose-based thickener as slowly as possible and disperse it until it is completely dissolved.

(2) Add the acrylic binder (wetting agent, disinfectant, and surfactant) in order and stir sufficiently to completely dissolve. When increasing the solid content, add more water-dispersed ester rosin and acrylic binder as adhesive raw materials and stir sufficiently to completely dissolve.

(3) Add an acrylic acid-based thickener and stir to dissolve it, then add an auxiliary solvent and stir to adjust the viscosity to prepare an adhesive.

When producing a water-based acrylic adhesive as described above. For paper packaging, which is a general material that is not coated, the solid content is controlled to 16~20%, Grade A; for coated materials with little hygroscopicity, the solid content is controlled to within 2.5%, Grade B; other general-purpose materials. In the case of , the solid content was controlled to 4~8% and was designated as Grade C. The mix by grade is as follows.

Grade A Grade B Grade C combination Thickener 1: CMC series
Acrylic binder: manufactured separately
Water-dispersible ester rosin: manufactured separately.
Surfactant: Non-ionic
disinfectant
Thickener 2: Acrylic type
Main solvent: pure water
Auxiliary solvent: Ethanol Thickener 1: CMC series
Acrylic binder: manufactured separately
Water-dispersible ester rosin: manufactured separately.
Surfactant: Non-ionic
disinfectant
Thickener 2: Acrylic type
Main solvent: pure water
Auxiliary solvent: Ethanol Thickener 1: CMC series
Acrylic binder: manufactured separately
Surfactant: Non-ionic
disinfectant
Thickener 2: Acrylic type
Main solvent: pure water
Auxiliary solvent: Ethanol

Figure 2 shows photographs of adhesive samples of Grade A, Grade B, and Grade C manufactured in the above examples.

The Grade A/B/C adhesive prepared in the above example was applied to a paper box and checked for natural drying after 30 minutes. It was confirmed that all was naturally dried. In particular, paper packaging was used on general materials that were not coated. A photo of the applied Grade A adhesive is shown in Figure 3. As can be seen immediately after application on a highly hygroscopic uncoated paper box (left) and 30 minutes after application (right), it was naturally dried 30 minutes after application. This is believed to have effectively controlled the hygroscopicity of the water-based acrylic adhesive when applied to paper boxes, etc.

In addition, the results of a self-test on Grade A adhesive in relation to whether it has adhesive strength to prevent slipping when loading the product are shown in Figure 4, and it was confirmed that it had sufficient adhesive strength.

<Test example>

In order to confirm the physical properties such as adhesive strength of the adhesive manufactured in the above example, five samples of adhesive Grade A/B/C with different solid content were prepared from kiln to kiln, respectively, and the adhesive strength and solid content were measured as follows. , tests were conducted to measure viscosity and pH. Each measurement method is as follows.

item Sample definition Number of measured samples measurement method viscosity viscosity of solution 5 KS M 3705 : 2015 solid content Non-volatile content of solution 5 KS M 3705 : 2015 pH pH of solution 5 KS M 0011 Tensile shear
Adhesive strength Apply 0.2g of solution to a 5cm x 10cm specimen and peel in a 180° direction. 5 KS M 3705 : 2015

Adhesive strength measurement results

The adhesive strength was measured five times for each sample, and the average values of the measured maximum tensile strength and tensile strength are shown in Table 3 below. Referring to this, the tensile shear adhesive strength is measured by peeling in a 180° direction after application, and it can be confirmed that an adhesive of at least 150N/cm ² was manufactured regardless of the solid content, which shows that the tensile shear adhesive is superior to the vertical peeling strength. You can have strength.

division Grade A Grade B Grade C Ultimate tensile strength (N/cm ² ) Average tensile strength (N/cm ² ) Ultimate tensile strength (N/cm ² ) Average tensile strength (N/cm ² ) Ultimate tensile strength (N/cm ² ) Average tensile strength (N/cm ² ) go 154.562 150.514 151.781 150.473 154.614 151.486 me 164.865 156.614 153.468 152.478 153.789 151.314 all 157.846 154.468 152.314 151.456 151.561 150.198 la 153.358 151.564 153.417 151.413 153.419 152.149 mind 155.274 151.186 152.465 151.845 152.624 151.798

Solid content measurement results

The solid content was measured for each sample and is shown in Table 4 below. Referring to this, it was confirmed that Grade A had a solid content of about 20%, Grade B had a solid content of about 2%, and Grade C had a solid content of about 5%.

division Grade A Grade B Grade C go 19.8 2.1 4.9 me 19.9 1.9 4.8 all 20.1 2.0 5.1 la 20.3 2.0 4.7 mind 20.1 2.0 5.0

Viscosity measurement results

Viscosity was measured for each sample, and the results are shown in Table 5 below. Referring to this, it can be seen that the viscosity is at least 4000 cps and has a viscosity in the range of about 5000±500 cps.

division Grade A Grade B Grade C go 5,136 5,139 5,105 me 5,487 4,972 5,314 all 4,972 4,597 5,054 la 4,730 4,698 4,916 mind 4,831 4,845 4,728

pH measurement results

The pH was measured for each sample, and the results are shown in Table 6 below. Referring to this, it can be seen that the pH is maintained at a neutral level of 7.

division Grade A Grade B Grade C go 7.0 7.0 7.0 me 7.0 7.0 7.0 all 7.0 7.0 7.0 la 7.0 7.0 7.0 mind 7.0 7.0 7.0

From the results of the above examples and test examples, the water-based acrylic adhesive of the present invention has a viscosity to ensure ease of application, a solid content to control hygroscopicity, and a tensile shear adhesive strength to ensure stability of loading. It is an anti-slip adhesive that has the physical properties shown in Table 7 below.

unit of measurement Grade A Grade B Grade C solid content % 20±1 2 or less 5 ± 1 viscosity cps 5,000 ± 500 5,000 ± 500 5,000 ± 500 pH - 7 ± 1 7 ± 1 7 ± 1 Tensile shear bond strength N/cm2 150 or more 150 or more 150 or more

Therefore, according to the present invention, as a water-based acrylic adhesive, the solid content can be adjusted according to the hygroscopicity of the paper packaging material as the adherend, so it can be applied to various paper packaging materials. Through this, a certain level of adhesive strength is achieved, and in particular, tensile strength is superior to the vertical peel strength. By being able to have shear adhesive strength, it is possible to provide an anti-slip effect without peeling contamination. Moreover, it can be cured at room temperature, increasing the economic efficiency of the process, and is expected to be manufactured and applied in an environmentally friendly manner as it is manufactured in a one-component form and does not use solvents.

Claims (7)

A water-based acrylic adhesive containing a cellulose-based thickener, an acrylic-based thickener, an acrylic binder, a surfactant, and water,
The adhesive has a viscosity of 4500 to 5500 cps and a tensile shear adhesive strength of at least 150 N/cm ² . According to claim 1,
An anti-slip adhesive for paper packaging, characterized in that the adhesive has a solid content of 4 to 8% by weight. According to claim 1,
The adhesive has a solid content of 16 to 20% by weight and is an anti-slip adhesive for paper packaging, characterized in that it is for uncoated paper bags. According to claim 1,
An anti-slip adhesive for paper packaging materials, characterized in that the adhesive has a solid content of 2.5% by weight or less and is for coated paper bags. Preparing a first mixture by dissolving a cellulose-based thickener in water as the main solvent and stirring it;
Preparing a second mixture by sequentially adding and stirring an acrylic binder, a disinfectant, and a non-ionic surfactant to the first mixture to dissolve them;
Preparing a third mixture by adding and stirring an acrylic thickener to the second mixture to dissolve it; and
It includes the step of preparing a water-based acrylic adhesive by adjusting the viscosity with the alcohol-based cosolvent of the third mixture,
The adhesive has a viscosity adjusted to 4500 to 5500 cps and a tensile shear adhesive strength of at least 150 N/cm ^2. A method of manufacturing an anti-slip adhesive for paper packaging materials. According to clause 5,
The step of preparing the second mixture is,
Paper packaging, characterized in that the solid content is adjusted by sequentially adding and stirring an acrylic binder, a disinfectant, and a non-ionic surfactant to the first mixture to dissolve them, and then adding water-dispersible ester rosin and stirring it to dissolve it. Manufacturing method of non-slip adhesive. According to clause 6,
A method of manufacturing an anti-slip adhesive for paper packaging material, characterized in that the solid content of the adhesive is adjusted to 4 to 8% by weight or 16 to 20% by weight.