KR102087497B1 - Eco-friendly packaging material with smooth texture - Google Patents

Abstract

Disclosed is a packaging material having a soft texture and a method for manufacturing the same. A method of manufacturing a packaging material having a soft texture according to an embodiment includes forming a printed layer through at least one of Oriented Polypropylene (OPP), Polyethylene terephthalate (PET), and Nylon; Preparing a coating agent; And coating the coating agent on the printing layer to form a coating layer, wherein the coating layer may have a surface friction coefficient (COF) of 0.4 or more.

Description

ECO-FRIENDLY PACKAGING MATERIAL WITH SMOOTH TEXTURE}

The following example relates to an eco-friendly packaging material having a soft texture.

In the case of a packaging material for packaging an object, a composite packaging material produced by laminating a plurality of films having different properties is used. Each film constituting the composite packaging material is configured to have different properties according to roles.

In general, a coating layer is formed on the outer surface of the packaging material to generate a unique texture. In the absence of a coating layer, since the film constituting the outer layer of the packaging material is exposed as it is, a gloss of a unique film texture of plastic occurs.

Meanwhile, a coating agent for providing a special visual texture may be applied to the outer surface of the packaging material. The coating agent can remove the gloss peculiar to the packaging material by covering the plastic surface.

When a packaging container is manufactured through the packaging material, the consumer recognizes the packaging container through the outer surface of the packaging material. The coating agent may promote the consumer's desire to purchase products by realizing the visual and tactile texture of the outer surface of the special packaging material.

On the other hand, in the case of a high-end packaging container, there are cases where a packaging material using high-quality leather is used. However, this has a problem of excessively increasing the cost of the packaging material. Therefore, while reproducing a feeling similar to high-quality leather, a packaging material using plastic is required.

The purpose of the embodiment is to provide a soft textured packaging material having a similar feel to the surface of a leather surface and a method of manufacturing the same.

The purpose of the embodiment is to provide a soft textured packaging material having a roughness of a certain level or more and a method of manufacturing the same so as not to slip when loaded.

A method of manufacturing a packaging material having a soft texture according to an embodiment includes forming an printed layer through at least one of OPP (Oriendted poly propylene), PET (polyethylene terephthalate), and nylon; Preparing a coating agent; And coating the coating agent on the printing layer to form a coating layer, wherein the coating layer may have a surface friction coefficient (COF) of 0.4 or more.

In one aspect, the step of preparing the coating agent may include mixing a matting agent having a particle size of 1 μμm or less in an aqueous emulsion resin.

In one side, the step of mixing the matting agent, the content of the matting agent relative to the coating agent may be to have 20 to 25% by weight.

In one aspect, the step of preparing the coating agent, 70 to 89% by weight of a water-soluble solvent; 8 to 12% by weight of wax; And preparing a matting agent at a component ratio of 1 to 3% by weight of the weathering stabilizer.

In one side, forming the coating layer comprises: coating the coating agent on one surface of the printing layer in a gravure method; After the coating step, it may include a step of aging for 24 hours or more.

A packaging material having a soft texture according to an embodiment includes a printing layer on which ink is printed on one surface; And a coating layer coated on the other surface of the printing layer, wherein the coating layer has hydrophilicity and a friction coefficient (COF) of 0.4 or more.

In one side, the printing layer, OPP (Oriendted poly propylene), PET (polyethylene terephthalate), may include at least one of nylon.

In one side, the coating layer, an aqueous emulsion resin; And a particle size of 1 μμm or less, and the matting agent may have a weight ratio of 20 to 25% with respect to the coating layer.

In one side, the matting agent, 85 to 89% by weight of a water-soluble solvent; 8 to 12% by weight wax; And 1 to 3% by weight of weathering stabilizer.

In one side, the basis weight of the coating layer, may be 6 to 12 g / m ² (Wet).

In one side, the packaging material, further comprising an intermediate layer adhered to the coating layer, the intermediate layer, aluminum foil (aluminum foil), nylon (nylon), PE (polyethylene), LLDPE (low density linear polyethylene) It may include at least one in the group containing.

The packaging material and the manufacturing method of the soft texture according to the embodiment may implement a moist and smooth surface texture like the surface of high-quality leather.

The packaging material of the soft texture and the manufacturing method according to the embodiment may have a surface roughness such that it does not slip while loading a heavy object.

The packaging material and the manufacturing method of the soft texture according to the embodiment may promote an eco-friendly effect through a coating layer of a hydrophilic material.

The following drawings attached to the present specification illustrate one preferred embodiment of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention. It should not be construed limitedly.
1 is a perspective view of a product to which a soft texture packaging material is applied according to an embodiment.
2 is a cross-sectional view of a soft texture packaging material according to an embodiment.
3 is a cross-sectional view of a soft texture packaging material according to an embodiment.
4 is a flowchart of a method for manufacturing a soft textured packaging material according to an embodiment.
5 is a flow chart of a coating agent manufacturing step according to an embodiment.
6 is a flowchart of a step of forming a coating layer according to an embodiment.

Hereinafter, embodiments will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the embodiments, when it is determined that detailed descriptions of related well-known configurations or functions interfere with understanding of the embodiments, detailed descriptions thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to the other component, but another component between each component It should be understood that may be "connected", "coupled" or "connected".

Components included in any one embodiment and components including a common function will be described using the same name in other embodiments. Unless there is an objection to the contrary, the description described in any one embodiment may be applied to other embodiments, and a detailed description will be omitted in the overlapped range.

1 is a perspective view of a product to which a soft texture packaging material is applied according to an embodiment.

Referring to FIG. 1, a soft textured packaging material according to an embodiment may be used to manufacture a packaging container for receiving a product. Packaging containers may be manufactured in different sizes according to the type of product to be accommodated. For example, the packaging container may be applied in various sizes of packaging types, from a small container accommodating cosmetics to a medium container accommodating coffee and a large capacity container accommodating pet food. The packaging container may be formed in the form of a bag (負 袋, burlap bag). For example, the packaging container may be formed in the form of a bag for storing pet food.

The packaging material may have the same surface texture as actual leather. Accordingly, the packaging container manufactured through the packaging material may have a surface texture similar to that formed of leather.

2 is a cross-sectional view of a soft texture packaging material according to an embodiment.

Referring to FIG. 2, the packaging material having a soft texture according to an embodiment may have a moist and soft texture like the surface of high-quality leather while having a matte surface. The soft texture packaging material may include a printing layer 120, a coating layer 110, and an intermediate layer 130.

The printing layer 120 may constitute an outer surface of the packaging material. The printing layer 120 may include at least one of Oriented poly propylene (OPP), Polyethylene Terephthalate (PET), and nylon. For example, when the printing layer 120 includes PET, stability and durability of the printing layer 120 may be improved.

The print layer 120 may be printed with information on the contents or design of the product. For example, ink may be printed on one surface of the printing layer 120. Since the printing layer 120 is transparent, it is possible to recognize the ink printed on one side from the other side.

The coating layer 110 may be coated on the other surface of the printing layer 120. The coating layer 110 may cover the outer surface of the printing layer 120 to form the surface of the packaging container in which the packaging material is used. The coating layer 110 may be hydrophilic. The coating layer 110 may include an aqueous emulsion resin and a matting agent. In this case, the matting agent may have a weight ratio of 15 to 30% with respect to the coating layer 110. Preferably, the matting agent may have a weight ratio of 20 to 25% with respect to the coating layer 110.

Aqueous emulsion resins can be hydrophilic. For example, aqueous emulsion resins include vinyl acetate-ethylene emulsion, vinyl acetate-acrylic emulsion, polyurethane resin emulsion, epoxy resin emulsion, styrene-butadiene copolymer latex, acrylonitrile butadiene copolymer latex and chloroprene rubber It may include at least one aqueous emulsion of the group consisting of latex.

The matting agent may be a matting agent containing wax. In this case, the matting agent may have a particle size of 1 μm or less. When the matting agent has a particle size of 1 μm or less, the film layer may have a surface texture similar to a leather surface.

The matting agent may include water-soluble solvents, waxes and weathering stabilizers. In this case, the matting agent may have a component ratio of 85 to 89% by weight of the water-soluble solvent, 8 to 12% by weight of the wax, and 1 to 3% by weight of the weathering stabilizer.

The water-soluble solvent may be pure water or ethanol (ETOH). In this case, the matting agent has hydrophilic properties, so that it can be easily mixed with the aqueous emulsion resin.

The wax can be PE wax, PP wax, FT paraffin, natural wax, montan wax, macrocrystalline and microcrystalline paraffin wax, amide wax and combinations thereof.

Weathering stabilizer can suppress the physical properties of the printed layer 120 and poor appearance,

Fluorine-based can be used.

The coating layer 110 may be completely coated or partially coated on the other surface of the printing layer 120. In this case, the basis weight of the coating layer 110 may be 6 to 12 g / m ² (Wet). The coating layer 110 may have a surface friction coefficient (COF) of 0.4 or more. The friction coefficient of the coating layer 110 can be adjusted according to the amount of wax added to the matting agent. In other words, when the amount of the wax added to the matting agent is 8 to 12% by weight, the friction coefficient of the coating layer 110 may be 0.4 or more. In this case, even when stacking a plurality of packaging containers in the case of manufacturing a large-capacity packaging container through a packaging material, since it has sufficient friction between the surfaces of the laminated packaging containers, it is possible to prevent the loaded packaging containers from slipping. .

On the other hand, in the case of the coating layer 110 according to the above-described structure, it is possible to implement a matte surface texture. In particular, the coating layer 110 may provide a matte display effect with a hydrophilic material by including an aqueous emulsion resin. In addition, since the matting agent has a particle size of 1 μm or less, it may have a soft and moist surface texture, such as a leather surface. As a result, the coating layer 110 may simultaneously provide a visual effect and a tactile effect, such as leather, so that the packaging material has a luxurious feel.

The intermediate layer 130 may be adhered to one surface of the printing layer 120. The intermediate layer 130 may serve to protect the printed ink on the opposite side of the printing layer 120. The intermediate layer 130 may include at least one of a group including aluminum foil, nylon, polyethylene (PE), and low density linear polyethylene (LDDPE). The intermediate layer 130 and the printing layer 120 may be laminated to each other through various methods such as an extrusion method, a coating method, a spraying method, and a deposition method. As the lamination method, methods such as gravure, thermocompression, offset, kiss bar, mayer bar, coma method, roll casting molding or spraying may be used. For example, the intermediate layer 130 may be laminated to the printing layer 120 through a dry laminating process through adhesive coating.

3 is a cross-sectional view of a soft texture packaging material according to an embodiment.

Referring to FIG. 3, the intermediate layer 130 may be composed of a plurality of layers stacked on each other. For example, the intermediate layer 130 may include a first layer 131, a second layer 132, a third layer 133, and a fourth layer 134 stacked in order, as shown in FIG. 3. have. The first layer 131 may include, for example, aluminum. In this case, the first layer 131 has a high barrier property and a moisture-proof light-shielding property, so that long-term storage properties of products stored in the packaging material can be secured.

The second layer 132 may serve to prevent aluminum from being exposed to the outside by covering the first layer 131 formed of aluminum. The second layer 132 may include, for example, at least one of nylon, PET, and OPP.

The third layer 133 may include PE. When the third layer 133 includes PE, high moisture resistance can be secured.

The fourth layer 134 may include LLDPE or m-LLDPE. When the fourth layer 134 includes LLDPE, strength and impact resistance of the packaging material may be improved.

However, the above-described layered structure of the intermediate layer 130 is only one example, and the intermediate layer 130 is formed in various layer structures according to the use of the packaging material, and is laminated on the printing layer 120 to constitute the packaging material can do.

Hereinafter, a method for manufacturing a soft textured packaging material according to an embodiment will be described. In describing the method of manufacturing the packaging material, contents overlapping with the above-described description will be omitted.

4 is a flowchart of a method for manufacturing a soft textured packaging material according to an embodiment, FIG. 5 is a flowchart of a coating agent manufacturing step according to an embodiment, and FIG. 6 is a flowchart of a coating layer forming step according to an embodiment.

4 to 6, a method of manufacturing a soft textured packaging material may include a printing layer forming step 210, a coating agent manufacturing step 220, and a coating layer forming step 230.

In step 210, a printed layer in the form of a film may be formed through at least one of oriented poly propylene (OPP), polyethylene terephthalate (PET), and nylon. An ink may be printed on one side of the printing layer and a coating layer may be formed on the other side.

In step 220, a coating agent may be prepared. Step 220 may include a matting agent manufacturing step 221 and a matting agent mixing step 222.

In step 221, a water-soluble matting agent can be prepared. In step 221, a matting agent can be prepared by mixing a water-soluble solvent, a wax, and a weathering stabilizer. The water-soluble solvent may be pure water or ethanol (ETOH). Further, the wax may be PE wax, PP wax, FT paraffin, natural wax, montan wax, macrocrystalline and microcrystalline paraffin wax, amide wax and combinations thereof. In this case, the particle size of the matting agent may be prepared to have 1 μμm or less.

In step 221, the matting agent is 85 to 89% by weight of a water-soluble solvent, and 8 to 12% by weight of a wax; And a weathering stabilizer in an amount of 1 to 3% by weight.

In step 220, a coating agent may be prepared by mixing a matting agent with the aqueous emulsion resin. The aqueous emulsion resin is composed of a vinyl acetate-ethylene emulsion, a vinyl acetate-acrylic emulsion, a polyurethane resin emulsion, an epoxy resin emulsion, a styrene-butadiene copolymer latex, an acrylonitrile butadiene copolymer latex and a chloroprene rubber latex. And an aqueous emulsion of at least one of the groups.

In this case, the content of the matting agent for the coating agent may have 15 to 30% by weight. Preferably, the coating agent may have a matting agent content of 20 to 25% by weight.

In step 230, a coating agent may be coated on the printing layer to form a coating layer. Step 230 may include a coating step 231 and an aging step 232.

In step 231, corona treatment may be performed on both surfaces of the printed layer. Through the corona treatment, ink and coating agent can be easily attached to both sides of the printing layer. The coating agent may be coated on one surface of the printing layer in a gravure method. The coating agent may be partially coated or fully coated on the printed layer to have a basis weight of 6 to 12 g / m ² (Wet).

In the coating process, the coating agent may be dried with hot air of 100 degrees or more to form a coating layer.

In step 232, the coating layer formed on the printing layer may be aged. Step 232 may be performed for 24 hours at a temperature ranging from 35 degrees to 45 degrees. The coating layer on which the aging process is completed may have a friction coefficient of 0.4 or more.

After step 230 is performed, another film, aluminum foil, or the like may be dried or laminated on the printed layer to form a packaging material.

The packaging material manufactured through such a manufacturing method may provide a matte visual feeling by forming the coating layer with hydrophilicity. In addition, since it provides a moist, soft-touch surface texture that feels like real leather, it is possible to provide the consumer with a feeling similar to that of using real leather. In addition, since the coating layer is formed of a hydrophilic material, it may have an environmentally friendly and human effect.

As described above, although the embodiments have been described by the limited drawings, those skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in a different order than the described method, and / or components such as the structure, device, etc. described may be combined or combined in a different form from the described method, or may be applied to other components or equivalents. Even if replaced or substituted by, appropriate results can be achieved.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

110: coating layer
120: printed layer
130: intermediate layer

Claims (11)

Forming a printed layer through at least one of Oriented Polypropylene (OPP), Polyethylene terephthalate (PET), and Nylon;
Preparing a coating agent;
Coating the coating agent on the printed layer to form a coating layer having a surface friction coefficient (COF) of 0.4 or higher;
The step of preparing the coating agent,
The hydrophilic aqueous emulsion resin is mixed with a matting agent having a particle size of 1 µm or less,
The matting agent has a content of 20 to 25% by weight relative to the coating agent,
The matting agent,
Water-soluble solvent 85 to 89% by weight;
8 to 12% by weight wax; And
A method for manufacturing a packaging material having a soft texture, which is manufactured to have a component ratio of 1 to 3% by weight of a weathering stabilizer.
delete delete delete According to claim 1,
The step of forming the coating layer,
Coating the coating agent on one surface of the printing layer in a gravure method;
After the step of coating, including the step of aging for at least 24 hours, the manufacturing method of the packaging material having a soft texture.
A printing layer on which ink is printed on one side; And
It includes a coating layer coated on the other side of the print layer,
The coating layer is hydrophilic and has a friction coefficient (COF) of 0.4 or more,
The coating layer
An aqueous emulsion resin and a matting agent having a particle size of 1 μm or less,
The matting agent has a weight ratio of 20 to 25% with respect to the coating layer,
The matting agent,
85 to 89% by weight of a water-soluble solvent;
8 to 12% by weight wax; And
1 to 3% by weight comprising a weathering stabilizer, Packaging with a soft texture.
The method of claim 6,
The printing layer,
OPP (Oriented poly propylene), PET (polyethylene terephthalate), including at least one of nylon, packaging material having a soft texture.
delete delete The method of claim 6,
The basis weight of the coating layer is 6 to 12 g / m ² (Wet), a packaging material having a soft texture.
The method of claim 6,
Further comprising a medium layer to be adhered to the printing layer,
The intermediate layer,
A packaging material having a soft texture, comprising at least one from the group comprising aluminum foil, nylon, PE (polyethylene), and low density linear polyethylene (LDDPE).

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