KR100511713B1 - Adhering method for paper panels and manufacturing method for a packaging box using the adhering method - Google Patents

Abstract

Disclosed are a method of adhering a paper panel and a method of manufacturing a packaging box that can easily maintain initial adhesion and maintain a strong adhesive strength. In manufacturing a packaging box made of a paper material such as cardboard, the bonding method and the manufacturing method of the present invention is characterized by using a first adhesive having excellent initial adhesive strength and a second adhesive which provides a firm adhesive strength once bonded. It is done. By using two or more adhesives with different properties for bonding together, the advantages of the adhesives can be combined, and the adhesive defects frequently generated during assembly of the cardboard box can be significantly reduced, resulting in economically significant effects. There is a number.

Description

Adhesion method of a paper panel and a manufacturing method of a packaging box using the said adhesion method {ADHERING METHOD FOR PAPER PANELS AND MANUFACTURING METHOD FOR A PACKAGING BOX USING THE ADHERING METHOD}

The present invention relates to bonding, and more particularly, in bonding a paper panel such as corrugated cardboard, a packaging box from a body plate can be easily used by using a method of conveniently and firmly bonding a paper panel and a bonding method thereof. It relates to an assembly method that can be assembled.

The packaging box made of corrugated cardboard is composed of a plurality of corrugated boards, and the corrugated boards are connected through a fold line, and the corrugated boards are bent in sequence and adhesively glued to the ends thereof to form a box for packing from a body plate having a flat shape. I assemble it. In the past, staplers or tapes were used to bond the corrugated boards together. However, as adhesives having excellent adhesive properties have been developed, many boxes have recently been molded by adhesives.

Hot-melt adhesive is one of the most widely used boxes in the manufacture of cardboard boxes. Hot melt adhesive is characterized in that it does not contain any solvent because the conventional adhesive is used to make a liquid by melting only 100% solids by heat, unlike the conventional adhesive is dissolved or dispersed in a solvent in a solid phase adhesive component at room temperature. Due to these properties, hot melt adhesives are sometimes referred to as hot melt adhesives and are distinguished from solvent type and emulsion type adhesives.

The hot melt adhesive may be heated and melted to impart fluidity and applied to the adherend, and then the adherent may be directly adhered while being solidified by cooling. The high-speed adhesive hot melt adhesive enables the automation of the production line. Since it is solvent-free, it does not harm the human body at all and is widely used in various industries including packaging and bookbinding. The use of adhesives is steadily increasing.

The hot melt adhesive consists of components such as base polymer, wax, tackifying polymer, plasticizer, filler and antioxidant. Base polymer includes ethylene vinyl acetate copolymer, polyethylene and ethylene copolymer, and polypropylene. , Atactic polypropylene, ethylene acrylate copolymer, polyamide resin, polyester resin, styrene isoprene block polymer, styrene butadiene copolymer and the like.

The wax is mixed with the hot melt adhesive for the purpose of preventing the blocking by reducing the melt viscosity of the composition to improve workability, adjusting the set time. In general, paraffin wax, polyethylene wax and the like are used. Tackifying polymers include rosin and rosin derivatives, terpene resins, coumarone inrene resins, petroleum resins, and plasticizers are used for the purpose of improving plasticity and impact resistance at low temperatures, and polybutene, polyisobutylene, chlorinated paraffin, and flowable fluids. Paraffin, aromatic oils, and the like. Fillers are used to prevent shrinkage or blocking while the adhesive is hardening and include calcium carbonate, titanium oxide, talc, clay, barium carbonate and the like. In addition, antioxidants are used to prevent oxidation of the polymer upon heating, and include 2,6-t-butyl-p-cresol, dilaurylthiopropionate, di-t-butyl-4-methylphenol, and the like.

Hot melt adhesives are divided into general use and special use according to the base polymer. For general use, EVA, EEA, APP, etc. are used as the base polymer.

Hot melt adhesive has a number of advantages, firstly, has the advantage of fast adhesion speed. Since the adhesion speed is very short compared to the emulsion or solvent type, the drying process is unnecessary after application, and the pressing process is enough to maintain only a few seconds, which can shorten the adhesion process and increase the processing speed by several times or more. The productivity can be remarkably improved.

Second, hot melt adhesives have the advantage of a wide range of adhesive properties. Conventional adhesives can also bond polyethylene, polypropylene, PVC films, etc., which were difficult to bond, and have excellent adhesion to a wide range of materials, such as corrugated cardboard, metal foil, wood, and textiles, which are waterproofed with carbon paper or wax coated with the above materials. Can be provided.

Third, it has the advantage of solvent-free type. Hot melt adhesives are 100% solids that do not contain water or other solvents, making it easy to bond nonporous materials. In addition, there is no risk of shrinkage, poisoning, or fire caused by drying, which is a drawback of solvent-type adhesives, and the equipment, time, and heat necessary for evaporation of water or solvent are unnecessary.

Fourth, it has the advantage of being economic. Since hot melt adhesives are 100% solids, the cost of the products may be high, but they have significant economic and useful considerations in consideration of productivity improvement, labor cost reduction, low coating volume, low risk of fire, and low physiological toxicity. .

However, hot melt adhesives also have some disadvantages. First of all, hot melt adhesives are limited in heat resistance. Since the main component is a thermoplastic resin and used in a fluidized state by heat melting, there is a natural limit to heat resistance after adhesion.

Second, hot melt adhesives have the disadvantage of being easy to bond while having relatively low adhesive strength. In order to have heating fluidity, lower melt viscosity is preferable, but lowering viscosity lowers cohesion. Therefore, since a large adhesive force cannot be obtained like a thermosetting resin adhesive such as epoxy, there is a limit to use as a structural adhesive.

The use of hot melt adhesives makes it easy and quick to assemble a cardboard box, which is popularly used. However, since the adhesive strength is low, even after bonding the cardboard box, the bonded portion may fall off during transportation or storage. Accordingly, hot melt adhesives are generally used in boxes for packaging small articles and the like, and are used only for limited purposes in boxes for packaging articles with high loads or large volumes.

Currently, a binding member such as a stapler is used for assembling a box separately in order to package an article having a high load or a large volume. However, such a binding member protrudes into and out of the box and may damage or handle a stored item. There is a number. In addition to this, as an adhesive, an aqueous emulsion adhesive such as polyazole having excellent adhesive strength may be used. However, in order for the aqueous emulsion adhesive to be wetted and bonded, it takes a long time and is a process to be performed. Because of this difficulty, it is insufficient to be used for production lines or for mass production.

One object of the present invention for overcoming the above problems is to provide an adhesive method of a paper panel that is excellent in initial adhesion and can provide a firm adhesive strength even after a long time.

In addition, another object of the present invention is to provide a method for adhering a paper panel that can be easily applied to the production line so that anyone can easily perform the bonding process.

In addition, another object of the present invention is to provide a method for manufacturing a packaging box that can quickly adhere and secure the corrugated cardboard plate of the packaging box is easy to assemble the first time, and can maintain a high strength of adhesive strength even after the binding. will be.

In addition, another object of the present invention is to provide a packaging box with improved binding force.

According to a preferred embodiment of the present invention for achieving the above object of the present invention, the first adhesive and the second paper panel is interposed between the first adhesive and a second adhesive having different characteristics from the first adhesive, Provided is a method of adhering a paper panel by applying an external force to the first and second paper panels to adhere for a predetermined time, thereby adhering the first paper panel and the first paper panel to each other.

Adhesives have different properties depending on their type. For example, depending on the main component can be divided into organic adhesives and inorganic adhesives, the organic adhesive can be further divided into natural adhesives and synthetic adhesives. In addition, depending on the curing method it can be divided into a room temperature curing adhesive and a melt adhesive.

By using two or more adhesives having different adhesive properties in this way, the advantages of each adhesive can be highlighted and the disadvantages can be compensated for each other.

For example, hot melt adhesives have the advantage of being easy to use if using an applicator, fast bonding process and excellent initial adhesion, which makes them easy to apply to automation or production lines, but lacks heat resistance and relative As it has a weak adhesive strength, even if only a slight impact from the outside has the disadvantage that the bonded portion can easily fall. In contrast, solvent- and emulsion-type adhesives bind paper with water or a solvent that penetrates into the paper and then dries. Once bonded, they maintain a high bond strength, but bond the paper together until the process of bonding. There must be close contact, and the process must last for a considerable time.

According to the present invention, in adhering the paper panels to each other, the hot melt adhesive and the solvent adhesive are applied adjacent to each other, and the paper panels, which are the adherends, can be adhered to each other. At this time, the hot melt adhesive quickly forms an initial bond, and the solvent adhesive bonds the paper panel with high adhesive strength in the process of infiltrating into the paper panel and drying.

In order to apply | coat a 1st and 2nd adhesive agent, a 1st and a 2nd adhesive agent may be apply | coated in parallel alternately with each other, and it may apply | coat in a diagonal direction so that a 1st and 2nd adhesive agent may mutually cross. In addition, the first and second adhesives may be applied to any one of the first and second paper panels, and then the other paper panels may be adhered, and the first and second adhesives may be applied to the first and second paper panels, respectively. The paper panels may then be contacted and glued together.

According to a preferred embodiment of the present invention for achieving the above object of the present invention, providing a body plate of the packing box including a bottom plate portion and a side wall portion, having different characteristics on the parts bonded to each other in the body plate A method of manufacturing a packaging box is provided, comprising applying a first adhesive and a second adhesive, and bringing the first and second adhesive applied portions into contact with each other for a predetermined time.

In general, the packaging box includes a bottom plate portion and a side wall portion formed of cardboard, and the bottom plate portion and the side wall portion are provided in the shape of a body plate integrally connected through a fold line. The body plate is cut into a developed view of the box, and a fold line or a half knife is formed to correspond to each bottom plate and side wall plate, and the user assembles the box-shaped box by bending the body plate in turn along the fold line or the half knife. An adhesive is applied to the bottom plate and the side wall portions, and the boxes can be kept in a box shape by adhering the adhesive-coated portions to each other.

However, since a three-dimensional box is manufactured by bending a flat body plate, the bent body plate tends to return to the original flat plate, and even if the body plate is adhered with an adhesive, the bonded portion can easily fall off. . In particular, it is almost impossible to eliminate the resilience of the corrugated cardboard and check the adhesion state by bending the body plate reliably at the box factory that needs to produce hundreds to thousands of boxes per day, which causes the production speed to drop significantly.

However, the manufacturing method of the packaging box according to the present invention uses the adhesive of different properties. According to a preferred embodiment, a hot melt adhesive is used as the first adhesive and a solvent / emulsion adhesive such as polysol is used as the second adhesive. The hot melt adhesive quickly bonds the cardboard at the same time as it is glued, the binding force being sufficient to maintain the box shape of the packing box for the time being, while the solvent type / emulsion type adhesive is applied to the cardboard while the hot melt adhesive keeps the box shape. Soaking in and drying provides a firm bond strength. Once the cardboard is glued with a solvent / emulsion adhesive, the glued area does not easily fall off even if heat is applied later or an impact is applied from the outside.

Since the packaging box manufactured by this method is easy to be initially bonded, the number of boxes classified as poor in adhesion can be significantly reduced, and the gap of the box that can occur during use or transportation of the box can be minimized.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments.

Example 1

FIG. 1 is a partially enlarged perspective view illustrating a paper panel bonding method according to a first embodiment of the present invention, and FIG. 2 is a flowchart illustrating a paper panel bonding method according to the first embodiment.

1 and 2, a first paper panel 110 and a second paper panel 120 are provided, and ends of the second paper panel 120 are partially bent to form an adhesive piece 125. .

The end of the first paper panel 110 is bonded and fixed to the adhesive piece 125, thereby binding the first paper panel 110 and the second paper panel 120 integrally.

The first adhesive (I) and the second adhesive (II) are applied side by side to the ends of the first paper panel 110. As the first adhesive (I), a hot-melt adhesive is used, and as the second adhesive (II), a polysol, which is an aqueous emulsion adhesive, is used. The hot melt adhesive, which is the first adhesive (I), is a solid adhesive, and has a fluidity in the heat-melted state so that it can be easily applied onto the first paper panel 110, but is rapidly sprayed from an applicator and exposed to room temperature quickly. It cools and adheres the adherend. In addition, the second adhesive (II), polyazole, is used as an EVA (Ethylene Vinyl Acetate) alone or a copolymerization product with Acryl-EVA resin and is used for box bonding, and has excellent adhesive strength and water resistance. However, the polysol has a disadvantage in that the initial adhesive strength is lower than that of the hot melt adhesive because the moisture in the adhesive must be absorbed into the paper panel, and a considerable time is required to generate sufficient adhesive force. Therefore, by using the first adhesive (I) and the second adhesive (II) together, excellent initial adhesive strength can be obtained, and high adhesive strength can be maintained for a long time.

3 is a schematic view for explaining a method of applying the first and second adhesive on the paper panel. In FIG. 1, the first and second adhesives I and II are alternately applied to the bonding site, but according to other embodiments of the present invention, the first and second adhesives I and II may be formed in various forms. Can be applied.

In FIG. 3A, the first and second adhesives I and II are inclined in an oblique direction and applied alternately. In FIG. 3B, the first and second adhesives I and II are applied to each other. It is applied while crossing. However, in the case where the first adhesive (I) is a hot melt adhesive and the second adhesive (II) is a water-soluble polyazole as described above, since the hot melt adhesive may cross the water-soluble polyazole or be in contact with each other, the temperature may be lowered. It should be noted that the method shown in b) has a higher likelihood of poor adhesion than other methods.

In addition, although the first and second adhesives I and II are applied together on the first paper panel 110 in this embodiment, according to other embodiments of the present invention, the first and second adhesives I and II are applied. II) can be applied to different paper panels, and at this time, the paper panels can be brought into contact with each other to exhibit different adhesive properties.

Example 2

4 is a front view of a packaging box according to a second embodiment of the present invention and a manufacturing method thereof, and FIGS. 5A and 5B are views illustrating a packaging box and a manufacturing method thereof according to a second embodiment of the present invention. Perspective view.

4 to 5A, the packing box 200 includes a bottom plate 210 and a side wall part, and the bottom plate 210 and the side wall part are provided as a body plate 201 having an exploded view shape. The body plate 201 includes a bottom plate 210, a first side wall plate 220, and a second side wall plate 230. The bottom plate 210 is formed at the center of the body plate 201, and four sides of the quadrangular shape are connected to the first and second side wall plates 220 and 230 through a fold line. That is, the first side wall plate 220 is formed on two opposite sides of the bottom plate 210, and the second side wall plate 230 is formed on the remaining two sides opposite to the bottom plate 210. As already mentioned, in the present embodiment, the first side wall plate 220 and the second side wall plate 230 are connected through a fold line along the periphery of the rectangular bottom plate 210, and the side wall plates 210 are connected to the bottom plate 210. Bend perpendicular to) to form a box-shaped packaging box.

However, according to another embodiment of the present invention, the side wall plates constituting the side wall portion may be sequentially connected through a fold line, and bottom plates may be provided at the bottom of each side wall plate to integrally connect the side wall plate and the bottom plate. According to the exemplary embodiment, the side wall portion and the bottom plate portion formed of side wall plates may be separated from each other. That is, the packaging box described in this embodiment is an example of a box including a bottom plate portion and a side wall portion, and it can be understood that the packaging box according to the present invention includes a conventional packaging box including the bottom plate portion and the side wall portion. In addition, according to the intention of the designer, the top plate portion for covering the packaging box may be formed separately or integrally.

Referring back to FIG. 4, adhesive pieces 235 are formed at both ends of the second side wall plate 230. The adhesive piece 235 is bonded to the inner surface of the first side wall plate 220, thereby interconnecting the first side wall plate 220 and the second side wall plate 230, the bottom plate and the side wall portion by maintaining the connection Keep the box shape firm.

However, generally, the body plate 201 including the bottom plate 210 and the sidewall plates 120 and 130 is made of corrugated paper. Corrugated cardboard is one of the panel materials made of paper. It is made of paper, which is light in weight, absorbs external shocks including a corrugated structure inside, and is easy to bend and recycled due to the nature of paper. Is being used by. However, although corrugated cardboard is made of paper, it is necessary to maintain contact between the adherends for a certain time during initial bonding since corrugated cardboard has a restoring force to return to its original shape when bent. In addition, when an article such as a cargo is loaded into the packaging box, a force is applied from the inside of the box, so that the junction part of the box may fall.

The manufacturing method according to the present invention is characterized by using a first adhesive (I) having excellent initial adhesive strength and a second adhesive (II) which provides high adhesive strength for a long time. In particular, such a manufacturing method may be usefully applied to the case where a fast bonding process and a strong adhesive strength are to be provided at the same time, such as when manufacturing a packaging box in a large quantity using a production line. When manufacturing the packaging box in the actual production line, since it is practically impossible to fold the body plate and apply the adhesive and attach it precisely, many defects are generated due to the poor adhesion among the manufactured packaging boxes. As a result, the time and property damage that occurs during the manufacturing process is enormous.

However, in the manufacturing method according to the present invention, a hot melt adhesive is used as the first adhesive (I), and a polyazole, which is an aqueous emulsion adhesive, is used as the second adhesive (II). Originally, the first adhesive (I) and the second adhesive (II) may be used alone to be used for bonding boxes and the like, respectively. Specifically, the hot melt adhesive, which is the first adhesive (I), cannot provide a satisfactory high adhesive strength. However, since the adhesive is directly bonded to corrugated cardboard, the initial adhesion is quick, and the manufacturer can apply such a production line to the production line. There is a number. In addition, the second adhesive (II) used together with the first adhesive (I) is a polyazole, which has a disadvantage in that it takes a long time for initial adhesion because water or a solvent must penetrate the corrugated cardboard. It is advantageous to maintain the box structure of a large volume box or a large load box because it maintains a fairly high adhesive strength. In other words, when manufacturing the cardboard box on the production line by using the advantages of the first adhesive (I) and the second adhesive (II) while complementing the disadvantages, it is possible to minimize the occurrence of defective products due to poor adhesion.

Hereinafter, a manufacturing method of a packaging box according to the present embodiment will be described with reference to FIGS. 5A and 5B.

Referring to FIG. 5A, the body plate 201 includes a bottom plate 210, a first side wall plate 220, a second side wall plate 230, and an adhesive piece 235. The body plate 201 is automatically moved by a conveyor belt or other conveying device, while the second injector 320-2 for spraying the second adhesive (II) and the first injector for spraying the first adhesive (I). Pass 320-1. Since the melted hot melt adhesive is injected through the first injector 320-1, the first injector 320-1 is mounted at the rear to be sprayed later.

As the body plate 201 passes through the second injector 320-2, a polyazole, which is the second adhesive II, is injected onto the upper surface of the first side wall plate 220. Since the body plate 201 is continuously moving, the second adhesive II is applied in parallel on the first side wall plate 220. The sensor is mounted adjacent to the second injector 320-2, and the sensor detects the passage of the body plate 201 and the second injector 320-2 when the body plate 201 reaches a predetermined position. Will spray the second adhesive (II). The first injector 320-1 is spaced apart from the second injector 320-2 by a predetermined interval, and the first sidewall plate 220 when the body plate 201 passes through the first injector 320-1. First adhesive (I), which is a hot-melt adhesive, is sprayed on the upper surface of By the 1st injector 320-1, the 1st adhesive agent I is sprayed corresponding to the site | part to which the 2nd adhesive agent II was apply | coated, and is also apply | coated in parallel. In addition, at the same time, the second injector 320-2 applies the second adhesive agent II to another bonding site on the first sidewall plate 220, and then applies the first injector 320-1 to the first injector 320-1. The first adhesive I is then applied to the other bonding site.

The first injector 320-1 and the second injector 320-2 arranged in front and rear form a pair and spray the first adhesive agent I and the second adhesive agent II, respectively, and the first adhesive agent I and The second adhesive II forms a region to be applied and bonded to both ends of the first side wall plate 220 so as to correspond to the adhesive piece 235.

Referring to FIG. 5B, the first side wall plate 220 and the second side wall plate 230 are bent upwards to stand vertically with respect to the bottom plate 210, and the adhesive pieces 235 at both ends of the second side wall plate 230. Fold inward and make contact with the area where the adhesive is applied. When a small amount of force is applied to maintain adhesion for a few seconds, the adhesive piece 235 and the first side wall plate 220 are initially bonded by the hot melt adhesive to form a box-shaped structure of the packing box 200.

In addition, as the first and second side wall plates 220 and 230 are bent, the outer wall plates attached to the outer surface of the side wall plate are also perpendicular to the bottom plate 210, and the lower ends of the outer wall plates are also placed on the bottom plate 210. It forms a locking projection protruding downward from the bottom.

As described above, the packing box 200 manufactured through the production line passes through a series of assembly processes on a conveyor belt moving quickly. Therefore, producers of packaging boxes generally use hot melt adhesives because they have to quickly bond cardboard and the like. However, since the hot melt adhesive has a relatively low adhesive strength as compared to other adhesives, the bonded portion may drop during transportation of the packing box 200, and the bonded portion may open during the storage or transportation of the article. have. In addition, there is a disadvantage that the adhesive strength is weaker in the relatively high temperature fat because of poor heat resistance. However, the packaging box manufactured by the manufacturing method according to the present embodiment is excellent in the initial adhesive because it uses a hot melt adhesive, and as the time passes, the binding process of the polyazole bonded more firmly, as well as the manufacturing process There is no fear of bonding of the bonded part during subsequent storage / transportation. Of course, it can also be applied to the production line can be quickly bonded, it can significantly lower the proportion of defective products that can occur during mass production.

6A is a partial side view for explaining a method of manufacturing a packing box according to another embodiment of the present invention similar to the first embodiment, and FIG. 6B is a schematic diagram schematically showing the process of FIG. 6A.

The apparatus shown in FIG. 6A is a decontamination device for automatically bending the first side wall plate 220 and the second side wall plate 230, and a body plate to which the first adhesive I and the second adhesive II are applied. By bending 201, the box 200 for packaging is manufactured automatically.

Referring to FIGS. 6A and 6B, the blocking device includes a frame 332 forming a structure of the blocking device, and a cylinder device 334 mounted to the top of the frame 332 to press the body plate 201 using the support 336. And a box bending device 338 for bending the first and second side wall plates 220 and 230 of the body plate 201 moved by the cylinder device 334.

The blocking device has a vertical structure and bends the first and second side wall plates 220 and 230 in order by pressing the body plate 201 introduced into the upper end downward. As such, the delimiter has a vertical structure, thereby manufacturing the packing box 200 without having to move or extend a conventional work line. However, the body plate 201 is moved upward by using the first inclined conveyor belt 312 as compared to the conventional horizontal conveyor belt, and the first and second injectors 320 are transferred to the horizontal conveyor belt 314. -1, 320-2, and the first adhesive (I) and the second adhesive (II) are passed through the first and second injectors (320-1, 320-2), respectively, the first side wall plate ( 220). The body plate 201 to which the adhesives are applied is transferred to the containment device.

The cylinder device 334 uses a hydraulic or air cylinder and starts operation while the body plate 201 is transferred to the restraint device, and moves the support 336 up and down through the vertical movement of the cylinder. The support 336 roughly corresponds to the shape of the bottom plate 210 and moves the body plate 201 by pressing the bottom plate 210 and provides a force to bend the side wall plates 220 and 230.

The body plate 201 passes through the box bending device 338 by the cylinder device 334. The second side wall plate 230 is bent while passing through the box bending device 338, and then the first side wall plate 220 is bent, and the adhesive piece 235 and the first side wall plate 220 are bonded to each other. .

After the body plate 201 passes through the box bending device 338, it is placed on the horizontal conveyor belt 316 located below in the form of a packing box 200, and the next work line through the second inclined conveyor belt 318. Is transferred to.

By automatically performing the box bending and bonding operations as described above, the production speed of the packaging material can be continuously maintained in accordance with the speed of the work line, and it can be surely bonded to significantly reduce the defective rate. At this time, the first adhesive (I) and the second adhesive (II) are applied together on the first sidewall plate 220 to significantly increase the adhesion speed and strength so that the adhesion can be made according to the speed of the work line.

Example 3

7 is a perspective view illustrating a packaging box and a manufacturing method thereof according to a third embodiment of the present invention.

The packaging box and the manufacturing method according to the third embodiment may be performed following the manufacturing method described in the second embodiment by using the packaging box 200 according to the second embodiment. For convenience of description, a description of the packaging box and the manufacturing method according to the present embodiment refers to the drawings and description of the previous embodiment.

Referring to FIG. 7, the packing box 200 forms sidewalls by the first sidewall plate 220 and the second sidewall plate 230. A partition 240 is provided inside the packing box 200 to partition an inner space, and both ends of the partition 240 are adhered to an inner surface of the first side wall plate 220. The partition 240 includes a central partition center plate 242 and partition adhesive pieces 244 formed at both ends of the center plate 242. The partition adhesive piece 244 is bent at both ends of the partition center plate 242 via a fold line, the partition 240 is formed in a c-shape, and a pair of partitions 240 are disposed to face each other. The inside of the packing box 200 is divided into two parts.

By hand, two workers are placed opposite each other to attach the two partitions 240 to the first sidewall plate 220, each worker having a first adhesive (I) and a second adhesive (II). The first and second adhesives I and II may be simultaneously applied using an adhesive gun 340 capable of simultaneously spraying (). At this time, each worker is recommended to fix the end of the different partition 240. As a result, the separate partitions 240 can be adhered to each other, and the adhesion of the partitions 240 becomes easy and quick since they do not interfere with each other. Of course, according to another embodiment of the present invention, after the adhesive gun moves directly to the inner wall of the first side wall plate 220 through an automatic facility instead of manual work, the adhesive gun is automatically sprayed on the inner wall of the first side wall plate 220 by spraying the adhesive. An adhesive can be applied.

The first and second adhesives I and II applied to the inner wall of the first side wall plate 220 are preferably applied so as not to cross each other in order to maintain the temperature between the adhesives.

Of course, by varying the direction of movement of the adhesive gun 340 it is possible to distribute the adhesive on the adhesive surface in more various ways. The most important feature of the present invention is that the first adhesive (I), which is a hot melt adhesive, and the second adhesive (II), which is a solvent / emulsion adhesive, are simultaneously applied to the bonding site, thereby providing excellent initial adhesion through each adhesive property and thereafter. It is to provide an adhesive method that can maintain a strong adhesive strength.

Example 4

8A to 8C are perspective views illustrating a packaging box and a method of manufacturing the same according to a fourth embodiment of the present invention.

Hereinafter, since the manufacturing method of the packaging box according to the fourth embodiment uses the packaging box 200 described in the second embodiment and the third embodiment in the same manner, the packaging box described in the second and third embodiments. And descriptions and drawings of the manufacturing method may be referred to in the description of the embodiment, the repeated content may be omitted.

Referring to FIG. 8A, the packing box 200 may include a bottom plate 210 and a side wall part, and the bottom plate 210 and the side wall part may be provided as a body plate 201 having an exploded view shape. The body plate 201 includes a bottom plate 210, a first side wall plate 220, and a second side wall plate 230. The bottom plate 210 is formed at the center of the body plate 201, and four sides of the quadrangular shape are connected to the first and second side wall plates 220 and 230 through a fold line. In addition, adhesive pieces 235 are formed at both ends of the second side wall plate 230, and the adhesive pieces 235 are adhered to the inner surface of the first side wall plate 220, whereby the first side wall plate 220 and the first side wall plate 220 are formed. The two side wall plates 230 are interconnected and the bottom plate and the side wall portions are maintained firmly in the box shape by maintaining the connection.

The body plate 201 is automatically moved by a conveyor belt or other conveying device, and passes through an injection device 350 capable of simultaneously spraying the first adhesive I and the second adhesive II. The injection device 350 includes a first injection hole 351 for injecting the first adhesive I and a second injection hole 352 for injecting the second adhesive II, and the first and second injection holes ( 351 and 352 are arranged in parallel adjacent each other. Here, the first adhesive (I) is a hot melt adhesive having a good initial adhesive force, and the second adhesive (II) is a polyazole which is an aqueous emulsion adhesive.

Since the body plate 201 is continuously moving, the first and second adhesives I and II are applied in parallel to the first side wall plate 220 in two rows, and two injection apparatuses 350 are provided. It is disposed back and forth to apply the first and second adhesives (I, II) to the entire first sidewall plate (220).

In this case, since the first and second adhesives I and II are applied to the entire first sidewall plate 220 line by line, the first pieces of the adhesive layer 235 and the first sidewall plate 220 are bonded to each other. And second adhesives I and II are applied. The portion of the adhesive applied in excess of this is used for bonding the partition 240 which is an inner cardboard part of the packaging box 200.

Referring to FIG. 8B, the first side wall plate 220 and the second side wall plate 230 are bent upwards to stand vertically with respect to the bottom plate 210, and the adhesive pieces 235 at both ends of the second side wall plate 230. Fold inward and make contact with the area where the adhesive is applied. When a small amount of force is applied to maintain adhesion for a few seconds, the adhesive piece 235 and the first side wall plate 220 are initially quickly bonded by the hot melt adhesive to form a box-shaped structure of the packing box 200.

In addition, as the first and second side wall plates 220 and 230 are bent, the outer wall plates attached to the outer surface of the side wall plate are also perpendicular to the bottom plate 210, and the lower ends of the outer wall plates are also placed on the bottom plate 210. It forms a locking projection protruding downward from the bottom.

Referring to FIG. 8C, in addition to the portion where the adhesive piece 235 and the first sidewall portion 220 are bonded, the first and second adhesives I and II are excessively exposed and applied to the exposed portion. And the partition 240 may be attached to the inside of the packing box 200 using the second adhesives I and II. Since both ends of the partition 240 are bonded to the inner surface of the first side wall plate 220, the partition 240 may partition the internal space of the spore box 200.

The partition 240 includes a central partition center plate 242 and partition adhesive pieces 244 formed at both ends of the center plate 242. The partition adhesive piece 244 is bent at both ends of the partition center plate 242 via a fold line, the partition 240 is formed in a c-shape, and a pair of partitions 240 are disposed to face each other. The inside of the packing box 200 is divided into two parts.

In the case of manual operation, two workers are disposed to face each other in order to attach the two partitions 240 to the first side wall plate 220, and each of them is separated because there is no need to apply an adhesive using an adhesive gun or the like. The partitions 240 can be quickly adhered to each other, and since the partitions 240 do not interfere with each other, the attachment of the partitions 240 becomes easy and quick.

The manufacturing method according to the present invention is characterized by using a first adhesive (I) having excellent initial adhesive strength and a second adhesive (II) which provides high adhesive strength for a long time. In addition, compared to the conventional work that had to be applied separately and glued separately, it is possible to significantly increase the working speed by applying the two adhesives at once and carrying out the work continuously while transferring to the conveyor belt. In particular, such a manufacturing method may be usefully applied to the case where a fast bonding process and a strong adhesive strength are to be provided at the same time, such as when manufacturing a packaging box in a large quantity using a production line.

Example 5

9A to 9C are perspective views illustrating a packaging box and a manufacturing method thereof according to a fifth embodiment of the present invention.

Similarly to the fourth embodiment, the manufacturing method of the packaging box according to the fifth embodiment uses the packaging box 200 described in the second and third embodiments in the same manner, and therefore, the second and third embodiments. Descriptions and drawings of the packaging box and the manufacturing method described in the description may be referred to in the description of the present embodiment, the repeated content may be omitted.

Referring to FIG. 9A, the packing box 200 includes a bottom plate 210 and a side wall part, and the bottom plate 210 and the side wall part are provided as a body plate 201 in an exploded view shape. The body plate 201 includes a bottom plate 210, a first side wall plate 220, and a second side wall plate 230. The bottom plate 210 is formed at the center of the body plate 201, and four sides of the quadrangular shape are connected to the first and second side wall plates 220 and 230 through a fold line. In addition, adhesive pieces 235 are formed at both ends of the second side wall plate 230.

The body plate 201 is automatically moved by a conveyor belt or other conveying device and passes through a first spraying device 350 capable of simultaneously spraying the first adhesive I and the second adhesive II. The first spray device 350 includes a first spray hole 351 for spraying the first adhesive I and a second spray hole 352 for spraying the second adhesive II, and the first and the second spray holes 352. The injection holes 351 and 352 are arranged in parallel adjacent to each other. Here, the first adhesive (I) is a hot melt adhesive having a good initial adhesive force, and the second adhesive (II) is a polyazole which is an aqueous emulsion adhesive.

Since the body plate 201 is continuously moving, the first and second adhesives I and II are applied in parallel on the first side wall plate 220 in two rows. However, the first and second adhesives I and II may be applied only to a portion of the first sidewall plate 220 that is bonded to the adhesive piece 235. To this end, the conveyor belt is equipped with a sensor (not shown), the operation of the injection device 350 is controlled by the detection of the sensor.

The body plate 201 having passed through the first injector 350 passes through the second injector 360 by a conveyor belt or other conveying device. The second spraying device 360 may spray the third adhesive III and the fourth adhesive IV at the same time, and for this purpose, the second spraying device 360 may spray a third adhesive 3 for spraying the third adhesive III. And a fourth injection hole 362 for injecting the injection hole 361 and the fourth adhesive IV. Here, the third adhesive (III) is a hot melt adhesive having good initial adhesive force, and the fourth adhesive (IV) is a polyazole which is an aqueous emulsion adhesive.

In the present embodiment, both the first adhesive (I) and the third adhesive (III) are hot melt adhesives, but the melting temperature of the third adhesive (III) is higher than the melting temperature of the first adhesive (I). Therefore, the third adhesive III can maintain the flow state for a longer time than the first adhesive I. According to another embodiment, the third adhesive III may be kept in the air for a long time by exposing the third adhesive III to air relatively later than the first adhesive I.

Referring back to the drawings, the first to fourth adhesives (I to IV) are applied to the entire first sidewall plate 220, and beyond the portion where the adhesive piece 235 and the first sidewall plate 220 are bonded. Third and fourth adhesives III, IV are applied.

Referring to FIG. 9B, the first side wall plate 220 and the second side wall plate 230 are bent upwards to stand vertically with respect to the bottom plate 210, and the adhesive pieces 235 at both ends of the second side wall plate 230. Fold inward and contact the site where the first and second adhesives (I, II) are applied. When a small amount of force is applied to maintain adhesion for a few seconds, the adhesive piece 235 and the first side wall plate 220 are initially quickly bonded by the hot melt adhesive to form a box-shaped structure of the packing box 200.

Referring to FIG. 9C, a partition 240 is attached to a portion to which the third and fourth adhesives III and IV are applied in addition to the portion where the adhesive piece 235 and the first sidewall portion 220 are bonded. Since both ends of the partition 240 are bonded to the inner surface of the first side wall plate 220, the partition 240 may partition the internal space of the spore box 200.

The partition 240 includes a central partition center plate 242 and partition adhesive pieces 244 formed at both ends of the center plate 242. The partition adhesive piece 244 is bent at both ends of the partition center plate 242 via a fold line, the partition 240 is formed in a c-shape, and a pair of partitions 240 are disposed to face each other. The inside of the packing box 200 is divided into two parts.

In the case of manual operation, two workers are disposed to face each other in order to attach the two partitions 240 to the first side wall plate 220, and each of them is separated because there is no need to apply an adhesive using an adhesive gun or the like. The partitions 240 can be quickly adhered to each other, and since the partitions 240 do not interfere with each other, the attachment of the partitions 240 becomes easy and quick.

According to the bonding method of the paper panel according to the present invention, it is possible to provide a bonding method having a desired characteristic in bonding the paper panel. By using the first adhesive and the second adhesive together, the advantages of the respective adhesives can be combined, and at the same time, the disadvantages can be compensated for. As described in the embodiments of the present invention, when the hot melt adhesive and the polysol adhesive are used together, excellent initial adhesion can be expected by the hot melt adhesive and strong adhesive strength can be expected by the polysol adhesive.

In addition, by easily adhering paper panels, such as corrugated cardboard, anyone can easily and quickly produce a packaging box, even in the production line by automated equipment can be easily applied to the manufacturing method for the packaging box very large economic effect Can be generated.

As described above, although described with reference to the preferred embodiments of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

1 is a partially enlarged perspective view for explaining a method of bonding a paper panel according to a first embodiment of the present invention.

2 is a flowchart illustrating a method of adhering a paper panel according to a first embodiment.

3 is a schematic view for explaining a method of applying the first and second adhesive on the paper panel.

4 is a front view of a body box for explaining a packaging box and a method of manufacturing the same according to a second embodiment of the present invention.

5A and 5B are perspective views illustrating a packaging box and a method of manufacturing the same according to the second embodiment.

6A is a partial side view for explaining a method of manufacturing a packing box according to another embodiment of the present invention similar to the first embodiment.

6B is a schematic diagram schematically showing the process of FIG. 6A.

7 is a perspective view illustrating a packaging box and a manufacturing method thereof according to a third embodiment of the present invention.

8A to 8C are perspective views illustrating a packaging box and a method of manufacturing the same according to a fourth embodiment of the present invention.

9A to 9C are perspective views illustrating a packaging box and a manufacturing method thereof according to a fifth embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110: first paper panel 120: second paper panel

125: adhesion piece 200: packing box

201: Body plate 210: Bottom plate

220: first side wall plate 230: second side wall plate

235: Adhesive service 240: Partition

I: First adhesive II: Second adhesive

Claims (20)

In the method of partially contacting the first paper panel and the second paper panel by mutual bonding, Interposing a first adhesive and a second adhesive having a different property from the first adhesive between the first paper panel and the second paper panel; And And applying a force to the first and second paper panels to make contact for a predetermined time. Interposing the first and second adhesives between the first and second paper panels may apply the first and second adhesives adjacent to each other on the first paper panel, and apply the second paper panel to the first and second paper panels. Approaching the first paper panel, The first adhesive has a property of excellent initial adhesive force, the second adhesive has a property of maintaining a strong adhesive force once the bond with the adherent is formed, The method of adhering a paper panel, wherein the first adhesive and the second adhesive of different types are interposed apart from each other between the first paper panel and the second paper panel. delete delete delete The method of claim 1, And the first adhesive is a hot-melt adhesive, and the second adhesive is a solvent or emulsion adhesive. delete Providing a body plate of a packing box including a bottom plate portion and a side wall portion forming a side wall along the periphery of the bottom plate; Applying a first adhesive and a second adhesive having a different property from the first adhesive to portions bonded to each other in the body plate; And Contacting the portions coated with the first and second adhesives to each other to be in close contact for a predetermined time; Equipped with The applying of the first and second adhesives may be performed by applying the first and second adhesives together adjacent to each other on one side of the body plate, The first adhesive has a property of excellent initial adhesive force, the second adhesive has a property of maintaining a strong adhesive force once the bond with the adherent is formed, The bottom plate portion and the side wall portion in the body plate is composed of multiple corrugated cardboard, The method of manufacturing a spore box, characterized in that the first adhesive and the second adhesive of different types are interposed apart from each other in the portion bonded to each other in the body plate. delete delete delete The method of claim 7, wherein The bottom plate portion and the side wall portion in the body plate comprises a plurality of corrugated cardboard plate connected to each other via a fold line, the end of one of the corrugated cardboard plate to be bonded is provided with an adhesive piece is formed, the first and A method of manufacturing a box for packaging, characterized in that for bonding the adhesive piece and another corrugated cardboard plate corresponding to the one corrugated cardboard plate using a second adhesive. The method of claim 7, wherein The bottom plate portion and the side wall portion in the body plate is provided in a state including a plurality of corrugated cardboard plate connected via a fold line with each other, and separate corrugated cardboard to the bottom plate portion or the side wall portion using the first and second adhesive A method for manufacturing a packaging box, characterized in that the member is bonded. delete The method of claim 7, wherein Wherein the steps of the manufacturing method of the packaging box, characterized in that the body plate is carried out sequentially by the conveyer belt. The method of claim 7, wherein Wherein said first adhesive is a hot-melt adhesive and said second adhesive is a solvent or emulsion type adhesive. delete The method of claim 15, The bottom plate portion and the side wall portion in the body plate comprises a plurality of corrugated cardboard plate connected to each other via a fold line, the end of one of the corrugated cardboard plate to be bonded is provided with an adhesive piece is formed, the adhesive piece and After applying the first and second adhesives on the other corrugated board to be bonded to each other over the portion bonded to the adhesive piece, and adhering the adhesive piece and the other corrugated board, the first and second adhesive Method for manufacturing a packaging box, characterized in that for bonding the inner corrugated cardboard parts of the packaging box in excess of the applied portion. The method of claim 15, The bottom plate portion and the side wall portion in the body plate comprises a plurality of corrugated cardboard plate connected to each other via a fold line, the end of one of the corrugated cardboard plate to be bonded is provided with an adhesive piece is formed, the adhesive piece and The first and second adhesives are applied on the other corrugated board to be bonded to each other with the adhesive pieces, and the third adhesive and the fourth adhesive are adjacent to and adjacent to the portions bonded to the adhesive pieces. And after applying, bonding the adhesive piece with the other corrugated board and adhering the inner corrugated cardboard part of the packaging box to a portion to which the third and fourth adhesives are applied. The method of claim 18, Wherein the third adhesive is a hot-melt adhesive having a lower melting temperature than the first adhesive, and the fourth adhesive is a solvent-type or emulsion-type adhesive. delete