KR102701343B1 - Manufacturing method of paper packing material using eco-friendly paper coating solution and paper packing material manufactured thereby - Google Patents

Abstract

An invention is disclosed for a method for manufacturing paper packaging material using adhesion of an eco-friendly paper coating agent. The disclosed method for manufacturing paper packaging material using adhesion of an eco-friendly paper coating agent is characterized by including: a) a coating base paper preparation step of preparing a coating base paper in which an eco-friendly paper coating agent is formed as a coating layer on at least one side of paper; b) a packaging paper manufacturing step of cutting the coating base paper into a set size according to the intended use to create first, second, and third packaging papers each having first, second, and third coating layers; c) a packaging paper processing step of cutting the first, second, and third packaging papers into the shape of at least one item storage section for storing items by a die-cutting operation and processing them so that they are foldable; and d) a paper packaging material forming step of sequentially stacking the first, second, and third packaging papers, applying heat, and pressing the first, second, and third packaging papers together with a press mold to form a three-layer paper packaging material having an accommodation space in the item storage section.

Description

Method for manufacturing paper packaging material using eco-friendly coating solution and paper packaging material manufactured thereby {MANUFACTURING METHOD OF PAPER PACKING MATERIAL USING ECO-FRIENDLY PAPER COATING SOLUTION AND PAPER PACKING MATERIAL MANUFACTURED THEREOF}

The present invention relates to a method for manufacturing paper packaging materials using an eco-friendly coating agent, and to paper packaging materials manufactured thereby, and more specifically, to a method for manufacturing paper packaging materials using an eco-friendly coating agent that can be easily decomposed and utilized as an eco-friendly material together with the eco-friendly coating agent, and to paper packaging materials manufactured thereby, by forming a coating layer by applying an eco-friendly special coating solution to paper, and performing a die-cutting operation so that the coated surfaces of first and second packaging paper face each other so that the cutting lines intersect each other, and further installing a third packaging paper to block the empty space between the first and second packaging papers, and then integrally bonding the first, second, and third packaging papers while applying heat using a press mold to process paper packaging materials for storing goods.

In general, paper products are increasingly being used as disposable items, such as paper cups, paper packaging materials, etc., by applying a coating liquid at high temperature and high pressure to the surface of paper products and using them as disposable cups or packaging materials for items.

In the past, plastic cups and plastic packaging products were mainly used instead of paper products, but as environmental pollution issues have become a problem, they are being replaced with paper products such as paper cups that can easily decompose when discarded in nature. Furthermore, even plastic straws are being replaced with paper straws that can easily decompose because they are said to be harmful to the environment.

However, in order to maintain rigidity while preventing moisture or oil from penetrating the surface of the paper product, a polyester (PE) coating solution or a PLA coating solution is mainly applied to at least one side.

However, PE coating liquid and PLA coating liquid applied to the surface of the paper secrete eco-friendly hormones in hot water and do not decompose well in nature when discarded, causing environmental pollution.

In addition, in the past, plastic inner storage cases were mainly used for storing cosmetics or food due to their low price and ease of mold production. Plastics do not easily decompose when disposed of in nature, so they must be separated and recycled. In addition, as disposal sites have gradually decreased, recycling has become increasingly difficult due to the garbage crisis, and there are various problems.

Therefore, there is a need to improve this.

Related background technology includes Korean Patent Publication No. 2016-0122097 (October 21, 2016, Title of the invention: Composition for coating eco-friendly paper packaging material and paper packaging material using the same).

The present invention was created in response to the above-mentioned necessity, and the purpose of the present invention is to provide a method for manufacturing paper packaging material using an eco-friendly coating agent that can be easily decomposed and utilized as an eco-friendly material together with an eco-friendly coating agent, and paper packaging material manufactured thereby, by forming a coating layer by applying an eco-friendly special coating liquid to paper, and making the coated surfaces of first and second packaging paper face each other and die-cutting them so that the cutting lines intersect and are settled, and then additionally settling a third packaging paper to block the empty space between the first and second packaging papers, and then integrally bonding the first, second, and third packaging papers by applying heat with a press mold to process paper packaging material for storing goods.

In order to achieve the above-mentioned object, the present invention provides a method for manufacturing paper packaging using an eco-friendly coating agent, which comprises: a) a coating base preparation step of preparing a coating base having an eco-friendly paper coating agent formed as a coating layer on at least one side of the paper; b) a packaging paper manufacturing step of cutting the coating base into a set size according to the intended use to create first, second, and third packaging papers each having first, second, and third coating layers; c) a packaging paper processing step of cutting the first, second, and third packaging papers into the shape of at least one item storage section for storing items by a die-cutting operation and processing them so that they are foldable; and d) a paper packaging material forming step of sequentially stacking the first, second, and third packaging papers, applying heat, and pressing the first, second, and third packaging papers together with a press mold to form a three-layer paper packaging material having an accommodation space in the item storage section.

The above coating base preparation step is characterized by including a composition preparation step of mixing and manufacturing each component of the paper coating agent to make a composition; a coating layer application step of coating at least one surface of the coating base with the paper coating agent in a liquid state as a coating layer; a coating layer drying step of drying the coating layer by applying hot air; and a coating base storage step of winding the coating base with the dried coating layer into a roll and storing it.

In the above coating base preparation step, the coating layer is characterized by including ethylene-acrylic acid or ethylene-methacrylic acid copolymer individually or a mixture thereof, acrylic emulsion, inorganic matter, ethylene vinyl acetate emulsion, starch, silica powder, and water.

The above coating layer is characterized by containing 7 to 11 wt% of ethylene-acrylic acid or ethylene-methacrylic acid copolymer, or a mixture thereof, 5 to 7 wt% of acrylic emulsion, 5 to 9 wt% of inorganic matter, 5 to 13 wt% of ethylene vinyl acetate emulsion, 7 to 9 wt% of starch, 11 to 15 wt% of silica powder, and 35 to 60 wt% of water.

The packaging paper processing step is characterized by including a first die-cutting pressing step for forming a first cutting line and a first side folding line on the first packaging paper by a die-cutting operation to form the product storage portion; a second die-cutting pressing step for forming a second cutting line and a second side folding line on the second packaging paper by a die-cutting operation so as to be misaligned with the first cutting line and the first side folding line of the first packaging paper; and a third die-cutting pressing step for forming a third cutting line and upper and lower folding lines on the third packaging paper by a die-cutting operation to block the side open space of the product storage portion formed by overlapping the first and second packaging papers.

The paper packaging material forming step is characterized by including a packaging material laminating step in which the first coating layer of the first packaging paper and the second coating layer of the second packaging paper are laminated so as to face each other and overlap, and the third packaging paper is laminated on the upper side with the third coating layer facing downward; and a lamination and storage section forming step in which the paper packaging material is processed by applying heat or high-frequency heat to the first packaging paper, the second packaging paper, and the third packaging paper, so that the first, second, and third cutting lines are respectively separated, and the first and second side folding lines and the upper and lower folding lines are folded, thereby forming a receiving space in the goods storage section, while bonding the first, second, and third coating layers of the first, second, and third packaging papers by heat fusing, respectively.

The above-mentioned item storage section comprises: a first side bottom support section formed by a first cutting line in the first packaging paper and provided in a receiving space of the item storage section so as to be folded by the first side folding line; a second side bottom support section formed by a second cutting line in the second packaging paper so as to have a second coating layer partially overlap and be heat-fused with the first coating layer of the first side bottom support section while facing in an opposite direction to the first side bottom support section, and provided in a receiving space of the item storage section so as to be folded by the second side folding line corresponding to the first side folding line; an upper support section folded by the upper folding line of the third packaging paper, and having a third coating layer partially adhered to the first and second side bottom support sections to block an upper surface of the receiving space formed by the first and second side bottom support sections; And it is characterized by including a lower support part that is folded by the lower folding line of the third packaging paper, and a third coating layer is partially adhered to the first and second side bottom support parts to block the lower side of the receiving space formed by the first and second side bottom support parts.

The above first side bottom support portions are formed in multiple numbers alternately on one side of the goods storage portion and the other side of the goods storage portion by the first cutting line in a zigzag shape on the first packaging paper, and the second side bottom support portions are formed alternately on one side and the other side of the goods storage portion by the second cutting line in a zigzag shape on the second packaging paper so as to correspond to the first cutting line of the first packaging paper.

In the step of forming the above-mentioned joint and goods storage section, the first, second, and third packaging sheets are jointed while applying pressure with the press mold, and a border folding section is further provided to be foldable on the border of the paper packaging material formed, and the border folding section includes: an upper folding section forming an upper border of the paper packaging material and folded by an upper fold line; a lower folding section forming a lower border of the paper packaging material and provided on an opposite side of the upper folding section and folded by a lower fold line; a left folding section forming a left border of the paper packaging material and folded by the left fold line; and a right folding section forming a right border of the paper packaging material and provided on an opposite side of the left folding section and folded by a right fold line.

In order to achieve the above-mentioned purpose, the present invention is characterized by providing a paper packaging material manufactured by a method for manufacturing paper packaging material using an eco-friendly coating agent according to the present invention.

A method for manufacturing paper packaging material using an eco-friendly coating agent according to the present invention and a paper packaging material manufactured thereby form a coating layer by applying an eco-friendly special coating solution to paper, and settling the coated surfaces of first and second packaging paper face each other through a die-cutting operation so that the cutting lines intersect, and then additionally settling a third packaging paper to block the empty space between the first and second packaging papers, and then integrally bonding the first, second, and third packaging papers while applying heat with a press mold to process the paper packaging material for storing goods, thereby easily decomposing together with the eco-friendly coating solution and being usable as an eco-friendly material.

Figure 1 is a flow chart of a method for manufacturing paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention.
FIG. 2 is an exploded perspective view of upper and lower cases for storing items in paper packaging using an eco-friendly coating agent according to one embodiment of the present invention.
FIG. 3 is a perspective view showing a state of cutting a coating source paper to manufacture a paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention.
FIG. 4 is a drawing showing a state in which first, second, and third packaging papers are processed through a die-cutting process and a folding process to manufacture paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention.
FIG. 5 is an exploded perspective view of the first, second, and third packaging papers before they are combined using a press mold to manufacture paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention.
Figure 6 is a cross-sectional view taken along line AA of Figure 2, showing the first, second, and third packaging papers pressed into a press mold and then disassembled to manufacture paper packaging material.
FIG. 7 is a cross-sectional view of a state in which some of the edges of the first, second, and third packaging papers are pressed by a press mold and separated to manufacture a paper packaging material using adhesion of an eco-friendly coating agent according to one embodiment of the present invention.
Figure 8 is an enlarged perspective view of the main part of the article accessory section according to section “B” of Figure 2.

Hereinafter, with reference to the attached drawings, a method for manufacturing paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention and a paper packaging material manufactured thereby will be described.

In this process, the thickness of the lines depicted in the drawing and the size of the components may be exaggerated for the sake of clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a flow chart of a method for manufacturing a paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of upper and lower cases for storing goods in a paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention, FIG. 3 is a perspective view showing a state in which a coating base paper is cut to manufacture a paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention, FIG. 4 is a drawing showing a state in which first, second, and third packaging papers are processed through a die-cutting process and a folding line process to manufacture a paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention, FIG. 5 is an exploded perspective view before bonding first, second, and third packaging papers with a press mold to manufacture a paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention, FIG. 6 is a cross-sectional view taken along line A-A of FIG. 2, showing a cross-sectional view in which the first, second, and third packaging papers are pressed with a press mold and then exploded to manufacture a paper packaging material, and FIG. 7 is a cross-sectional view of the present invention. This is a cross-sectional view of a state in which some of the edges of the first, second, and third packaging papers are pressed by a press mold and separated to manufacture a paper packaging material using adhesion of an eco-friendly coating agent according to one embodiment of the invention, and FIG. 8 is an enlarged perspective view of a main part of a product-related part according to part "B" of FIG. 2.

Referring to FIGS. 1 to 8, a method for manufacturing paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention includes a coating base paper preparation step (S10), a packaging paper processing step (S20), a paper packaging material forming step (S30), and a paper packaging material supply step (S40).

Referring to FIG. 2, a paper packaging material (10) according to one embodiment of the present invention is manufactured by coating a coated paper (2) having a coating layer (200) applied to the surface of the paper and used as a packaging material for an article (8). In the past, when a packaging material made of a polyethylene coating layer was used, biodegradability was significantly reduced, making it difficult to decompose in nature, which caused a problem of polluting the natural environment. However, a paper packaging material (10) according to one embodiment of the present invention is installed in an upper and lower case (4) (6) and used as an internal storage case for storing articles (8), such as cosmetics and food containers. By replacing the internal storage case, which was previously made of a synthetic resin material that does not decompose easily, with a paper material, the paper coating agent is also used as an eco-friendly material along with the paper, so that environmental pollution can be prevented when the paper is disposed of.

The coating base preparation step (S10) is a step of preparing a coating base (2) in which an eco-friendly paper coating agent is formed as a coating layer (200) on at least one side of the paper.

The coating base paper preparation step (S10) includes a composition preparation step (S12) of mixing and manufacturing each component of a paper coating agent to make a composition, a coating layer application step (S14) of coating at least one surface of a coating base paper (2) with a coating layer (200) in a liquid state with the paper coating agent, a coating layer drying step (S16) of drying the coating layer (200) by applying hot air to it, and a coating base paper storage step (S18) of winding the coating base paper (2) with the dried coating layer (200) into a roll and storing it.

The coating layer application step (S14) coats an eco-friendly coating layer (200) on at least one side of the coating source (2), thereby maintaining the rigidity of the paper packaging material (10), and thus can be used as a substitute for plastic. In addition, when disposed of externally, the coating layer (200) biochemically decomposes in nature after a certain period of time, so it can be used as an eco-friendly paper coating agent that does not pollute nature.

When coating the paper coating agent on at least one side of the coating source paper (2) in the coating step (S14), it is advantageous to maintain the set temperature and actual time.

The drying step (S16) is to dry at a temperature range of 80 to 150 degrees for approximately 15 to 120 minutes.

The coating layer (200) is characterized by including an individual or mixture of ethylene-acrylic acid or ethylene-methacrylic acid copolymer, acrylic emulsion, inorganic matter, ethylene vinyl acetate emulsion, starch, silica powder, and water.

Ethylene-acrylic acid or ethylene-methacrylic acid copolymers, individually or in a mixture thereof, are mixed with water to neutralize and disperse, and used as an aqueous dispersion. If this component is excessive, the aqueous dispersion characteristics become too excessive, so they should be properly maintained. If this component is properly maintained, water resistance, oil resistance, heat sealability, and alkaline dissociation properties can be excellently maintained. A small amount of alkaline components can be contained in water to improve dissociation properties when mixed with each component.

Acrylic emulsion maintains hardness in the coating layer (200).

Minerals are used to keep the rough surface of the coating base (2) flat, and mainly include clay, calcium carbide, titanium dioxide, etc.

Ethylene vinyl acetate emulsion can provide flexibility to the coating layer (200) while improving degradability upon disposal.

Starch is used to improve heat adhesion and water resistance in the coating layer (200), and oxidized starch is mainly used.

Silica powder is in the form of a fine powder, and can maintain viscosity in the coating layer (200) to further improve thermal bonding strength.

Water plays a role in dispersing each ingredient appropriately and helping them mix well with each other.

The coating layer (200) is characterized by containing 7 to 11 wt% of ethylene-acrylic acid or ethylene-methacrylic acid copolymer, or a mixture thereof, 5 to 7 wt% of acrylic emulsion, 5 to 9 wt% of inorganic material, 5 to 13 wt% of ethylene vinyl acetate emulsion, 7 to 9 wt% of starch, 11 to 15 wt% of silica powder, and 35 to 60 wt% of water.

The packaging paper processing step (S20) includes a first die-cutting pressing step (S22) in which a first cutting line (312) and a first side contact line (314) are formed on the first packaging paper (110) by a die-cutting operation to form a product storage section (300), a second die-cutting pressing step (S24) in which a second cutting line (322) and a second side contact line (324) are formed on the second packaging paper (120) by a die-cutting operation so that the first cutting line (312) and the first side contact line (314) of the first packaging paper (110) are misaligned with each other, and a third packaging paper (130) by a die-cutting operation to block the side open space of the product storage section (300) formed by overlapping the first and second packaging papers (110) (120). It includes a third die-cutting pressing step (S26) that forms a third cutting line (331) and upper and lower folding lines (332) (342).

The paper packaging forming step (S30) is a packaging paper lamination step (S32) in which the first coating layer (210) of the first packaging paper (110) and the second coating layer (220) of the second packaging paper (120) are laminated so that they face each other and overlap, and the third packaging paper (130) is laminated on the upper side so that the third coating layer (230) faces downward, and the first, second, and third cutting lines (312)(322)(331) are separated respectively while applying heat or high-frequency heat to the first packaging paper (110), the second packaging paper (120), and the third packaging paper (130), and the first and second side folding lines (314)(324) and the upper and lower folding lines (332)(342) are folded to form a receiving space in the goods storage section (300). It includes a step (S34) of forming a bonding and storage section by bonding the first, second, and third coating layers (210), (220), and (230) of the first, second, and third packaging papers (110), (120), and (130) by heat fusing, respectively, to process the paper packaging material (10).

In the packaging paper lamination step (S32), the third packaging paper (130) may be placed on the lower side while the first coating layer (210) of the first packaging paper (110) and the second coating layer (220) of the second packaging paper (120) are overlapped facing each other. In this case, the third coating layer (230) of the third packaging paper (130) is adhered to the back surface of the first packaging paper (110).

In addition, in the packaging lamination step (S32), a third packaging paper (130) may be placed between the first packaging paper (110) and the second packaging paper (120). In this case, the second coating layer (210) of the first packaging paper (110) is positioned so that it faces upward, the third coating layer (230) of the third packaging paper (130) is positioned so that it faces downward on the upper side of the first packaging paper (110), and the second coating layer (120) of the second packaging paper (120) is positioned so that it faces downward on the upper side of the third packaging paper (130). Therefore, the second coating layer (210) of the first packaging paper (110) and the second coating layer (220) of the second packaging paper (120) may be configured to adhere to each other through the empty space of the third packaging paper (130).

The goods storage section (300) comprises a first side bottom support section (310) formed by a first cutting line (312) in the first packaging paper (110) and provided in the receiving space of the goods storage section (300) to be folded by a first side contact line (314), a second side bottom support section (320) formed by a second cutting line (322) in the second packaging paper (120) to be folded by a second side contact line (324) corresponding to the first side contact line (314) so that a second coating layer (220) partially overlaps and is thermally fused to the first coating layer (210) of the first side bottom support section (310) while facing in the opposite direction to the first side bottom support section (310), It includes an upper support portion (330) that is folded by the upper folding line (332) of the third packaging paper (130) and has a third coating layer partially bonded to the first and second side bottom support portions (310)(320) to block an upper surface of an accommodation space formed by the first and second side bottom support portions (310)(320), and a lower support portion (340) that is folded by the lower folding line (342) of the third packaging paper (330) and has a third coating layer (230) partially bonded to the first and second side bottom support portions (310)(320) to block a lower surface of an accommodation space formed by the first and second side bottom support portions (310)(320).

The first side floor support members (310) are formed in multiple numbers alternately on one side of the goods storage section (300) and the other side of the goods storage section (300) by a zigzag first cutting line (312) in the first packaging paper (110).

The second side bottom support portion (320) can be formed alternately on the other side and one side of the goods storage portion (300) by a zigzag second cutting line (322) on the second packaging paper (120) so as to correspond to the first cutting line (312) of the first packaging paper (110).

The first side floor support member (310) and the second side floor support member (320) are formed in opposite directions to overlap and support the floor and side of the storage space of the goods storage unit (300).

The first side floor support member (310) and the second side floor support member (320) overlap each other by a set width (a) to form the floor and side of the receiving space. As a result, the receiving space of the goods storage unit (300) may not look good because the upper and lower sides are left as open spaces, but by blocking them through the upper surface support member (330) and the lower surface support member (340) of the third packaging paper (130), the empty open space in the receiving space of the goods storage unit (300) is blocked, so the receiving space looks neat and the appearance of the paper packaging material (10) can be improved.

Figure 6 is a cross-sectional view taken along line A-A of Figure 2, showing the first, second, and third packaging papers pressed by a press mold and then disassembled to manufacture paper packaging material.

As illustrated in FIG. 6, the first side bottom support member (310) is repeatedly formed in a cross-like manner in the vertical longitudinal direction so as to be bent downward from the left to the right or from the right to the left of the first packaging paper (110), and the second side bottom support member (320) is repeatedly formed in a cross-like manner in the vertical longitudinal direction so as to be bent downward from the right to the left or from the left to the right of the second packaging paper (120).

The first coating layer (210) formed on a portion of the upper surface of the first side bottom support member (310) is heat-fused to the second coating layer (220) formed on the lower surface of the second side bottom support member (320), thereby forming a receiving space that supports the left and right sides and the lower surface of the article (8). The article storage section (300) is formed by the upper mold member (510) and the lower mold member (520) of the press mold (500) described below.

The first and second side bottom support parts (310)(320) located in the leftmost goods storage part (300) and the rightmost goods auxiliary part (300), respectively, can be formed so that the first and second cutting lines (312)(322) and the first and second side joining lines (312)(324) are mutually symmetrical left and right based on the center line of the paper packaging material (10).

In addition, the first and second side bottom support parts (310)(320) located in the leftmost item storage section (300) and the rightmost item auxiliary section (300) may be formed in such a way that the first and second cutting lines (312)(322) cross each other on the left and right sides in a zigzag shape as they go up and down the longitudinal direction of the paper packaging material (10). Of course, the first and second side bottom support parts (310)(320) located in the leftmost item storage section (300) and the rightmost item auxiliary section (300) may be formed on only one side of the left or right side like the first and second side bottom support parts (310)(320) of the item storage section (300) in the middle.

The width (a) of the overlapping portion of the first side floor support portion (310) and the second side floor support portion (320) is characterized by having a gap in the range of 10 to 50% of the width (b) of the storage space of the item storage portion (300). Of course, the width of the storage space of the item storage portions (300) on the left and right sides of the item storage portion (300) may be formed larger than the width of the storage space of the item auxiliary portion (300) in the middle portion.

Meanwhile, if the width (a) of the overlapping portion of the first side bottom support portion (310) and the second side bottom support portion (320) is too narrow compared to the width (b) of the storage space of the item storage portion (300), the overlapping support force of the first side bottom support portion (310) and the second side bottom support portion (320) is weak, so that the first side bottom support portion (310) and the second side bottom support portion (320) can be easily separated, and if the width (a) of the overlapping portion of the first side bottom support portion (310) and the second side bottom support portion (320) is too wide compared to the width (b) of the storage space of the item storage portion (300), there is a problem that the storage space of the item storage portion (300) becomes narrow, so it is necessary to appropriately adjust the overlapping ratio.

In the step of forming the paper packaging material (10) by combining the first, second, and third packaging papers (110), (120), and (130) while applying pressure with a press mold (500), a border folding part (400) is further provided so that it can be folded.

The border folding part (400) includes an upper folding part (410) that forms an upper border of the paper packaging material (10) and is folded by an upper folding line (412), a lower folding part (420) that forms a lower border of the paper packaging material (10) and is provided on the opposite side of the upper folding part (410) and is folded by a lower folding line (422), a left folding part (430) that forms a left border of the paper packaging material (10) and is folded by a left folding line (432), and a right folding part (40) that forms a right border of the paper packaging material (10) and is provided on the opposite side of the left folding part (430) and is folded by a right folding line (442).

In the step of forming the joint and storage section (S34), the press mold (500) includes an upper mold member (510) in which a plurality of pressurizing protrusions (512) are formed to protrude to form a receiving space for the storage section (300), and a lower mold member (520) in which a plurality of recessed grooves (522) corresponding to the pressurizing protrusions (512) of the upper mold member (510) are formed.

The upper mold member (510) is provided with a press mold lifting drive mechanism (not shown), which is schematically illustrated, and is raised and lowered while continuously pressurizing the first packaging paper (110), the second packaging paper (120), and the third packaging paper (130) between the lower mold member (520) to form the product storage section (300) and the border folding section (400) by thermally fusing the first coating layer (210), the second coating layer (220), and the third coating layer (230) with high-frequency heat.

A method for manufacturing paper packaging material using an eco-friendly coating agent according to one embodiment of the present invention may further include a paper packaging material supply step (S40) of packaging the paper packaging material (10) and supplying it to a place of use.

Referring to FIGS. 1 to 8, a paper packaging material (10) is manufactured by a method for manufacturing a paper packaging material using adhesion of an eco-friendly paper coating agent according to one embodiment of the present invention described above.

Paper packaging material (10) is shown as being used as an inner container for storing goods, but it can be used as a paper container for storing food as well as various types of storage containers.

Therefore, according to one embodiment of the present invention, a method for manufacturing paper packaging material using an eco-friendly coating agent and a paper packaging material manufactured thereby form a coating layer by applying an eco-friendly special coating solution to paper, and the coated surfaces of first and second packaging papers are made to face each other and are die-cut so that the cutting lines intersect and are placed, and a third packaging paper is additionally placed to block the empty space between the first and second packaging papers, and then the first, second, and third packaging papers are integrally bonded while applying heat with a press mold to process the paper packaging material for storing goods, so that it can be easily decomposed together with the eco-friendly coating solution and utilized as an eco-friendly material.

Although the present invention has been described with reference to the embodiments shown in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

Therefore, the true technical protection scope of the present invention should be defined by the following patent claims.

2: Coating base 4: Upper case
6: Lower case 8: Goods
10: Paper packaging material 110: First packaging paper
120: 2nd wrapper 130: 3rd wrapper
200: Coating layer 210: First coating layer
220: 2nd coating layer 230: 3rd coating layer
300: Goods storage section 310: First side floor support section
312: First cutting line 314: First side interview line
320: Second side floor support 322: Second cutting line
324: Second side interview line 330: Top support part
331: Third cutting line 332: Top face contact line
340: Lower support part 342: Lower folding line
400: Edge fold 410: Top fold
412: Upper fold line 420: Lower fold
422: Lower fold line 430: Left fold
432: Left fold line 440: Right fold line
442: Right folding line 500: Press mold
510: Upper mold member 512: Pressurized protrusion
520: Lower mold member 522: Recessed groove
S10~S40: Steps in the manufacturing method of paper packaging material using an eco-friendly coating agent.

Claims (10)

a) a coating base paper preparation step of preparing a coating base paper in which an eco-friendly paper coating agent is formed as a coating layer on at least one side of the paper; b) a packaging paper manufacturing step of cutting the coating base paper into a set size according to the intended use to create first, second, and third packaging papers each having first, second, and third coating layers; c) a packaging paper processing step of cutting the first, second, and third packaging papers into the shape of at least one item storage section for storing items by die-cutting and processing them so that they can be folded; and d) a paper packaging material forming step of sequentially stacking the first, second, and third packaging papers, applying heat, and pressing the first, second, and third packaging papers together with a press mold to form a three-layer paper packaging material having a storage space in the item storage section.
The above-mentioned item storage section comprises: a first side bottom support section formed by a first cutting line in the first packaging paper and provided in a receiving space of the item storage section so as to be folded by the first side folding line; a second side bottom support section formed by a second cutting line in the second packaging paper so as to have a second coating layer partially overlap and be heat-fused with the first coating layer of the first side bottom support section while facing in an opposite direction to the first side bottom support section, and provided in a receiving space of the item storage section so as to be folded by the second side folding line corresponding to the first side folding line; an upper support section folded by the upper folding line of the third packaging paper, and having a third coating layer partially adhered to the first and second side bottom support sections to block an upper surface of the receiving space formed by the first and second side bottom support sections; And a lower support part folded by the lower folding line of the third packaging paper, and a third coating layer partially adhered to the first and second side bottom support parts to block the lower side of the receiving space formed by the first and second side bottom support parts;
The first side floor support portion is formed in multiple numbers alternately on one side of the goods storage portion and the other side of the goods storage portion by the first cutting line in a zigzag shape on the first packaging paper,
The second side floor support portion is formed alternately on one side and the other side of the goods storage section by the second cutting line in a zigzag shape on the second packaging paper so as to correspond to the first cutting line of the first packaging paper.
The first side floor support portion and the second side floor support portion are formed in opposite directions to overlap and support the floor and side of the storage space of the goods storage portion.
The above paper packaging material forming step is,
A packaging paper lamination step in which the first coating layer of the first packaging paper and the second coating layer of the second packaging paper are laminated so that they face each other and overlap, and the third packaging paper is laminated on top so that the third coating layer faces downward; and
A step of forming a paper packaging material by applying heat or high-frequency heat to the first packaging paper, the second packaging paper, and the third packaging paper, separating the first, second, and third cutting lines respectively, and forming a storage section by thermally bonding the first, second, and third coating layers of the first, second, and third packaging papers while folding the first and second side folding lines and the upper and lower folding lines to form a storage space in the goods storage section; including a step of forming a storage section and laminating the same;
The above first side floor support portion and the above second side floor support portion overlap each other by a set width (a) to form the floor and side of the receiving space.
A method for manufacturing paper packaging material using an eco-friendly coating agent, characterized in that the width (a) of the overlapping portion of the first side bottom support portion and the second side bottom support portion has a gap in the range of 10 to 50% of the width (b) of the storage space of the goods storage portion.
In paragraph 1,
The above coating base preparation step is,
A composition manufacturing step of mixing and manufacturing each component of the above paper coating agent to make a composition;
A coating layer application step of coating at least one surface of a coating source paper with the above paper coating agent in a liquid state as a coating layer;
A coating layer drying step for drying the coating layer by applying hot air to the coating layer; and
A coating base paper storage step of winding the coating base paper, in which the coating layer is dried, into a roll and storing it;
A method for manufacturing paper packaging material using an eco-friendly coating agent characterized by including:
In paragraph 1,
A method for manufacturing paper packaging material using an eco-friendly coating agent, characterized in that in the above coating base preparation step, the coating layer comprises an individual or mixture of ethylene-acrylic acid or ethylene-methacrylic acid copolymer, acrylic emulsion, inorganic matter, ethylene vinyl acetate emulsion, starch, silica powder, and water.
In the third paragraph,
A method for manufacturing paper packaging material using an eco-friendly coating agent, characterized in that the coating layer comprises 7 to 11 wt% of an ethylene-acrylic acid or ethylene-methacrylic acid copolymer, or a mixture thereof, 5 to 7 wt% of an acrylic emulsion, 5 to 9 wt% of an inorganic substance, 5 to 13 wt% of an ethylene vinyl acetate emulsion, 7 to 9 wt% of starch, 11 to 15 wt% of silica powder, and 35 to 60 wt% of water.
In paragraph 1,
The above packaging paper processing step is,
A first die-cutting pressing step of forming a first cutting line and a first side folding line on the first packaging paper by a die-cutting operation to form the above-mentioned goods storage section;
A second die-cutting pressing step of forming a second cutting line and a second side contact line on the second packaging paper by die-cutting so that the first cutting line and the first side contact line on the first packaging paper are misaligned with each other; and
A third die-cutting pressing step of forming a third cutting line and upper and lower folding lines on the third packaging paper by die-cutting to block the side open space of the goods storage section formed by overlapping the first and second packaging papers;
A method for manufacturing paper packaging material using an eco-friendly coating agent characterized by including:
delete delete delete In paragraph 1,
In the step of forming the above-mentioned joint and material storage section, a border folding section is further provided so that the first, second, and third packaging sheets are joined together while applying pressure with the press mold, and the paper packaging material is formed so that it can be folded.
The above border folding part is,
An upper folding portion forming an upper edge of the above paper packaging material and folded by an upper folding line;
A lower fold portion forming a lower edge of the above paper packaging material and provided on the opposite side of the upper fold portion and folded by a lower fold line;
A left fold portion forming a left edge of the above paper packaging material and folded by a left fold line; and
A right fold portion forming the right edge of the above paper packaging material and provided on the opposite side of the left fold portion and folded by the right fold line;
A method for manufacturing paper packaging material using adhesion of an eco-friendly paper coating agent characterized by including:
A paper packaging material manufactured by a method for manufacturing paper packaging material using an eco-friendly coating agent according to any one of claims 1 to 5 and 9.

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