KR102048660B1 - Coating method of packing box - Google Patents

Abstract

The present invention relates to a coating method of a packing box, and specifically, to a coating method of a packing box, which provides a packing box with improved water resistance through waterproof coating. The coating method of a packing box, in which water resistance is improved through coating, includes: a first step (S1) of preparing fabric formed of a corrugated cardboard or a plurality of paper layers; a second step of (S2) of coating both surfaces of the fabric with first waterproof coating liquid; a third step (S3) of cutting the fabric through a Thomson process in a planar figure shape, generating a plurality of perforating holes, and manufacturing the packing box; and a fourth step (S4) of coating an inner circumferential surface of the perforating hole with second waterproof coating liquid.

Description

Coating box coating method {Coating method of packing box}

The present invention relates to a packaging box coating method, and more particularly, to a packaging box coating method for providing a packaging box having improved water resistance through waterproof coating.

Agricultural products are packaged in the place of production and distributed to the place of sale or consumption for consumption as food. In particular, it is very important that fresh foods that are susceptible to transportation during consumption after hunting are sold to consumers while maintaining the freshness of the place of production.

In general, aquatic products, meat, dried fish or vegetables, which is a kind of fresh food, are frozen and refrigerated to maintain freshness, and are transferred from production to consumption. Packaging boxes are used to carry freshly frozen and refrigerated foods. Various materials and forms are applied to the packaging box, and a packaging box made of styrofoam or synthetic resin material and a packaging box made of paper material are used.

Styrofoam-shaped boxes are mainly used for the packaging and transportation of wet seafood such as shellfish and shellfish. They are widely used for the preservation of refrigerated or frozen foods because they have a certain thermal insulation effect. Along with the problem of vulnerable durability, which is easily damaged when a small impact from the outside such as a bump or fall of the liver is applied, the amount of discarded after being used for one-time use is quite large, and the problem of environmental pollution becomes a serious social problem. have.

The packaging box made of synthetic resin material has the advantage of high production cost and repeatable use, but it is difficult to recycle in case of damage or contamination. Therefore, a substantial amount of waste, which is virtually impossible to collect for recycling, is processed through incineration, and when incinerated, a large amount of harmful gas is generated, which causes a problem of environmental pollution. In addition, landfilling does not occur in a short period of time, and may take decades to hundreds of years. In addition, harmful environmental hormones generated during decomposition are a serious problem that harms organisms by contaminating soil and the ocean, which in turn penetrates foods that humans consume and poses a threat to food safety. In addition, packaging boxes made of synthetic resins are bulky and require a relatively large space for transportation and storage, which causes economic problems such as a significant increase in operating costs, resulting in an increase in logistics and management costs.

The packaging box made of paper material is more environmentally friendly than the box made of synthetic resin material and styrofoam, but due to the nature of the paper material, when absorbing a large amount of water, the durability decreases rapidly, and the product stored therein is strongly attached to the box. Desorption is difficult, there is a problem that there is a risk of product damage.

In particular, when storing aquatic products containing a large amount of water, such as a paper packaging box is torn, such damage is large, accordingly, the development of technology to prevent damage to the box due to moisture is required. In addition, commercially available seafood packaging box has a number of holes formed on the lower surface and the side in order to easily discharge the water of the seafood, there is a problem that the life of the box is further shortened by the moisture is absorbed through the inner peripheral surface of the hole.

The prior art Republic of Korea Patent Publication No. 10-2019-0056928 is a 'waterproof packaging box' is to ensure that the water inside the water does not flow out at all at the time of transporting the packaging with water such as various marine products, packaging In order to reduce the manufacturing cost of the box as well as to be able to fold the waterproof packaging box has been disclosed to significantly reduce the shipping and storage costs of the packaging box, there is a difficulty in solving the above problems.

Another prior art Korean Utility Model Publication No. 20-2011-0006440 relates to a 'packaging method of live abalone and aquatic products', and deals with a packaging method that maintains freshness and aesthetics according to the transfer from seller to consumer. have. Since the live abalone is packed with seawater in a sealed container, there is no problem that the weight of the abalone is less than the weight of the abalone, unlike the general packing without water. The packaging is not damaged during the process, so there is no fear of leakage, and the inconvenience of spilling water when opening is eliminated, and the product is clean and aesthetic at the time of opening when the product is received and can increase the value of the product. It is disclosed that it is easy to manage because it can be stored, but since the styrofoam box is used, it is difficult to solve the above problems because the environmental burden caused by disposal is large.

Another prior art Republic of Korea Utility Model Registration No. 20-0452553 relates to a frozen fish packaging box, by binding the fish (especially oysters) of the contents of the frozen state to both storage of the paper material of the internal configuration, respectively By packaging each seat on both sides of the foamed resin material, which is an integral structure, the contents are not mixed with each other in the upper and lower sides, but stably stored and packed, and can be displayed and used separately from each other if necessary. The knots of the strings for each of the folds of a certain interval so that each of the fish can be seated and stored without being separated into the accommodation space formed by the folding end portion and the folding laterals by binding and binding the knots of the bundled strings that are accommodated. Storage inlay and paper inlay formed through knot fittings Both ends of the fish complement body formed of a combined storage surface, and the fitting protrusion protrudes on one side so that the fish retainers on both sides can be seated and fixed on the other side, both ends of the foam resin material in which the fitting groove or the fitting recess are recessed. Both the outer packaging body of the paper material attached to the folded side of the folded side of the package binding body so that the insulated body and the endothelial cold body on both sides are individually coupled and hinged as an integral structure to be opened and closed. It includes, but not including the product configuration, but does not include a configuration for the moisture coming out of the product to be packaged as a packaging box is difficult to solve the above problems.

Republic of Korea Patent Publication No. 10-2019-0056928 Republic of Korea Utility Model No. 20-2011-0006440 Republic of Korea Utility Model Registration No. 20-0452553

An object of the present invention for solving the above problems is to provide an environmentally friendly paper packaging box than the packaging box made of styrofoam or synthetic resin that caused the conventional environmental pollution.

Another object of the present invention is to provide a packaging box coating method that can reduce the damage caused by moisture to safely store the goods.

The problem to be solved by the present invention is not limited to the above-mentioned problem, another problem to be solved by the present invention not mentioned here is those skilled in the art to which the present invention pertains from the following description Will be clearly understood.

Packaging box coating method according to an embodiment of the present invention for solving the above problems, in the packaging box coating method to improve the water resistance through the coating, the first step of preparing a fabric formed of cardboard or a plurality of paper layers (S1), a second step (S2) of coating the both sides of the fabric with the first waterproof coating solution, and the fabric is cut through the Thompson process in the form of an exploded view to form a plurality of perforations to produce a packaging box It comprises a third step (S3) and the fourth step (S4) for coating the inner peripheral surface of the perforated hole with a second waterproof coating liquid.

The packaging box coating method according to the present invention has an effect of providing an environmentally friendly packaging box than a packaging box made of styrofoam or synthetic resin using a fabric formed of cardboard or a plurality of paper layers.

The packaging box coating method according to the present invention has an effect of providing a packaging box having improved water resistance by the first waterproof coating liquid and the second waterproof coating liquid.

1 is a flowchart illustrating a packaging box coating method according to an embodiment of the packaging box coating method according to the present invention.
2 is a conceptual diagram showing a perforation hole coating process according to an embodiment of the packaging box coating method according to the present invention.
3 is a schematic view showing a branched coating hair according to an embodiment of the packaging box coating method according to the present invention.
Figure 4 shows a ring-shaped coating hair according to an embodiment of the packaging box coating method according to the present invention.
Figure 5 shows the curled coating hair according to an embodiment of the packaging box coating method according to the present invention.
6 is a flowchart illustrating a coating process of a fourth step according to an embodiment of the packaging box coating method according to the present invention.
Figure 7 shows a schematic view of the coating process of the curled coating hair according to an embodiment of the packaging box coating method according to the present invention.

Specific matters including the problem to be solved, the solution to the problem, and the effects of the present invention as described above are included in the embodiments and drawings to be described below. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings.

Packaging box coating method according to the present invention, as shown in Figure 1 to Figure 6, in the packaging box coating method of improving the water resistance through the coating, the first to prepare a fabric formed of cardboard or a plurality of paper layers Step (S1), the second step (S2) of coating both sides of the fabric with a first waterproof coating solution, and cut the fabric in a developed form through a Thompson process to create a plurality of perforation holes (A) packaging box It may be configured to include a third step (S3) for producing a and the fourth step (S4) for coating the inner peripheral surface of the perforated hole (A) with a second waterproof coating (B).

The packaging box according to an embodiment of the packaging box coating method according to the present invention is improved in water resistance and water resistance due to the coating, it is possible to prevent damage from moisture inside and outside the packaging box, the life of the packaging box is long There is.

First, as shown in FIG. 1, the first step S1 includes preparing a fabric formed of corrugated cardboard or a plurality of paper layers.

Specifically, the fabric may be configured to include an outer fabric, an inner fabric, an intermediate fabric.

The outer fabric is an outer surface of the completed packaging box form, it is exposed to the outside of the packaging box.

The inner surface fabric is an inner surface of the completed packing box shape, and forms the inside of the packing box.

The intermediate fabric is provided between the outer surface and the inner surface fabric. In addition, the upper and lower surfaces of the intermediate fabric is glued to adhere to the outer surface and the inner surface fabric.

The fabric is a structure in which the outer fabric, the intermediate fabric, the inner fabric is stacked in layers. This increases the strength of the finished box and prevents damage to the received goods, and may serve as a cool or warm insulation by the air layer provided inside the fabric.

Next, as shown in FIG. 1, the second step S2 includes coating both surfaces of the fabric with the first waterproof coating solution.

The top surface of the fabric forms an inner surface of the completed packaging box, and the bottom surface of the fabric forms an outer surface of the completed packaging box.

Specifically, an inner surface coating layer is formed on the top surface of the fabric, and an outer surface coating layer is formed on the bottom surface of the fabric through the second step (S2), and the inner coating layer and the outer coating layer are petroleum wax and vinyl (vinyl). It may be provided as a cured product of the coating solution containing a) -based polymer.

That is, the first waterproof coating solution includes a petroleum wax and a vinyl polymer.

Specifically, the first waterproof coating solution is cured on both sides of the fabric to form the inner coating layer and the outer coating layer. In other words, when the seafood is frozen, oxygen and water from the outside are prevented from penetrating into the fabric, and the frozen seafood in the packaging box is prevented from being dehydrated and damaged by freezer burn.

The inner coating layer formed on the inner surface of the fabric may be irregularities formed on the opposite side of the surface in contact with the fabric. The unevenness may be formed of a convex portion and a concave portion, and the convex portion and the concave portion may be formed at regular intervals or at irregular intervals.

Specifically, when the aquatic product is cooled in the packaging box made of the fabric, the moisture inside the packaging box is collected in the recess of the inner coating layer, the moisture collected in the recess is combined with each other to further increase the particles An ice layer may form between the inner coating layer and the seafood. The ice layer prevents dehydration of moisture contained in the cooled seafood and prevents oxygen from being oxidized to prevent freezing of the seafood.

In addition, the outer coating layer is formed on the outer surface of the fabric, the outer coating layer preferably has a flat surface, unlike the inner coating layer formed irregular irregularities. If the outer coating layer has irregularities, an ice layer may be formed on the outside of the packaging box, which may interfere with storage and transport.

On the other hand, the packaging box made of the fabric according to an embodiment of the present invention is formed of paper, the thickness is preferably 300 ~ 400㎛, the type, quantity and weight on the item to be made of the packaging box Since it may vary depending on, it is not limited thereto. Typically, when the thickness of the packaging box is less than 300㎛, the shape of the packaging box may be deformed due to the pressure applied to the inside and outside of the box, and when the thickness exceeds 400㎛, further effects of firmness, flexibility, elasticity, etc. It can be uneconomical.

In addition, both sides of the packing box are formed with a coating layer on which the first waterproof coating solution is cured. Preferably, the first waterproof coating liquid may be selected from polyethylene and paraffin wax, and may further include a silane compound, a urethane resin, and the like.

In addition, when polyethylene is selected as the vinyl polymer, it is preferable to use low density polyethylene rather than high density polyethylene in order to obtain a flexible coating surface and increase work processability. For example, the polyethylene is preferably low density polyethylene (LDPE), linear low density polyethylene (LLDPE), or a mixture thereof.

In the first waterproof coating solution according to an embodiment, the weight ratio of paraffin wax to polyethylene contained is preferably 1: 2 to 3, and more preferably 1: 2.3 to 2.8. If the weight ratio of paraffin wax to polyethylene is less than 1: 2, the viscosity is too high, which is a problem in manufacturing work, and the waterproofing function of the coating layer may be difficult to prevent dehydration and freezing of frozen aquatic products, and more than 1: 3. The coating layer may break at low temperatures.

The inner coating layer is formed on the inner surface of the packaging box, the concave-convex is formed on the opposite side of the surface in contact with the packaging box, the thickness is preferably 60 ~ 100㎛. If the thickness of the first box coating layer is less than 60㎛ it may be difficult to prevent the dehydration and freezing of the frozen seafood, if it exceeds 100㎛ the coating layer may be broken at low temperatures.

As described above, the unevenness formed in the inner surface coating layer may include a convex portion and a concave portion, and the convex portion and the concave portion are irregularly arranged. For example, the convex portion and the concave portion may have a hemispherical shape, a polygonal shape such as a cone, a triangular pyramid, a square pyramid, a polygonal shape such as a cylinder, a triangular prism, a square pillar, or the like. In addition, the concavities and convexities may be formed overlapping each other or formed spaced apart.

Although the convex portions and the concave portions formed in the inner surface coating layer are arranged irregularly, the average density of the convex portions is preferably 6 ~ 10 / cm ² . If the average density of the convex portion is less than 6 / cm ² ice layer is not formed between the inner coating layer and the frozen aquatic product can not prevent dehydration and freezing of the aquatic product, if more than 10 / cm ² ice layer is the inner surface It cannot be separated from the coating layer to prevent dehydration and freezing of the seafood.

On the other hand, the inner coating layer on which the irregularities are formed, the Ra (arithmetic mean roughness) is preferably 0.1 to 1㎛, more preferably 0.5 to 0.8㎛. If the roughness of the inner coating layer is less than 0.1㎛ the ice layer is not generated between the inner coating layer and the frozen aquatic product can not prevent dehydration and freezing of the aquatic product, if it exceeds 1㎛ the ice layer is separated from the inner coating layer to dehydrate the aquatic product And frozen images cannot be prevented.

The outer coating layer formed on the outer surface of the packaging box is preferably 60 ~ 80㎛ thickness. If the thickness of the outer coating layer is less than 60㎛ it may be difficult to prevent the dehydration and freezing of the frozen seafood, if it exceeds 80㎛ the coating layer may be broken at low temperatures.

The packaging box according to an embodiment of the present invention packaging box coating method, to protect the seafood in the frozen state to maintain the freshness of the seafood and to prevent damage to the seafood to maintain the original shape as well as to increase the value of the product In addition, it can be mailed to consumers in a frozen state, eliminating the inefficient problem of repackaging. In addition, there is an advantage that can be stored and transported by stacking in a predetermined bulk packaging container 2 to 3 blocks as needed.

Next, as shown in Figure 1, the third step (S3) includes cutting the fabric in the form of the exploded view through the Thomson process and to produce a plurality of perforation holes (A) to manufacture a packaging box.

The perforation hole (A) is provided in plurality on the bottom and side of the packaging box, is formed in any one or more shapes of circular and polygonal to easily discharge the moisture from the article accommodated in the packaging box outside the packaging box Can be.

In one embodiment, when accommodating aquatic products in the packaging box, the water is quickly discharged to reduce the weight of the packaging box, which may bring an economic advantage of logistics transport costs. In addition, since the freshly caught seafood can be directly packed in the packing box, the labor and time saving effect is generated.

Next, as shown in FIG. 1, the fourth step S4 includes coating the inner circumferential surface of the perforation hole A with a second waterproof coating B. FIG.

The reason for separately coating the inner circumferential surface of the perforated hole (A) is that the water flowing out when storing the seafood in the packaging box penetrates through the inner circumferential surface of the perforated hole (A) to damage the packaging box which is a paper material. To prevent this, a separate coating process is required.

The reason for not coating both sides of the fabric and the perforation hole (A) at the same time after the Thompson process is to prepare the fabric in the first step (S1) and simultaneously coat the entire surface of both sides of the fabric in the second step (S2). Because the process is done. That is, since the second step (S2) is performed at the same time as the first step (S1), it is possible to secure the economics in the process and line, there is an advantage that the first waterproof coating liquid can be uniformly coated on the fabric. .

In addition, in order to completely coat the inner circumferential surface of the perforated hole (A) generated through the Thomson process, a precise coating process using the following rotating brush (1) is required.

On the other hand, the second waterproof coating liquid (B) may be prepared including petroleum wax and silicone oil. Petroleum wax may be the same as the wax used in the first waterproof coating solution.

In one embodiment, the fabric that has passed through the second step (S2) is molded into the form of the packaging box after the Thomson process of the third step (S3), and a plurality of them are stacked and stacked. Then, when the perforated hole (A) is coated with a conventional coating solution, adhesion occurs between the overlapping packing boxes. Therefore, the second waterproof coating liquid (B) is to include a silicone-based oil, it is possible to prevent the adhesion or adhesion between the boxes by the silicone-based oil.

In addition, as shown in FIG. 2, the fourth step S4 may further include coating the second waterproof coating liquid B on the perforation hole A using the rotary brush 1. .

That is, the rotary brush 1 containing the second waterproof coating liquid B coats the inner circumferential surface of the perforated hole A.

The rotary brush 1 serves to coat the second waterproof coating liquid (B) on the perforation hole (A) through the rotation and up and down linear motion.

Specifically, the rotating brush (1) is characterized in that the coating hair 11 is formed radially around the rotation axis.

More specifically, as shown in FIGS. 3 to 5, the coating hair 11 is any one selected from a branch 111, an annular 112, or a curl 113 according to the shape of the terminal. It may be provided in the shape of.

More specifically, as shown in Figure 6, the fourth step (S4), the immersion step (S4-1) in which the second waterproofing coating solution (B) is immersed in the aggregate form at the end of the coating hair 11 ), An inlet step (S4-2) in which the end of the coating cap 11 is introduced into a gap between the inner circumferential surface of the perforation hole (A), and the coating cap 11 by the rotation and vertical movement of the rotary brush 1. At the same time as the end of the deformed by friction and at the same time the second waterproof coating solution (B) to release the coating step (S4-3) to coat the inner circumferential surface of the perforated hole (A), and the end of the coating hair is the perforated hole It may be configured to include a return step (S4-4) to return to the initial form out of. In addition, the steps S4-1 to S4-4 may be repeated several times in a single step according to a predetermined process.

In addition, the branch 111 may be provided in a form in which a plurality of branches extending radially at the ends of the coating hair 11 is formed.

As an example, the fourth step S4 may be performed while the plurality of branches in the coating wool 11 are immersed in the second waterproof coating liquid B. This has the advantage that the area and the amount of coating can be increased at one time than a single hair. The second waterproof coating liquid (B) immersed and aggregated is formed between the branches at the end of the coating hair 11, and with the rotation and vertical reciprocating movement of the rotary brush (1), the perforation hole (A) At the inner circumferential surface, the end of the coating hair 11 is pressed and the coating liquid contained therein is released to coat the inner circumferential surface of the perforated hole (A). At this time, it is preferable that the coated surface proceeds radially to the inner circumferential surface and the predetermined depth of the perforation hole (A).

Next, the annular 112 may be provided in a form in which a ring of a circle or polygon is formed at the end of the coating hair 11.

In one embodiment, the second waterproof coating liquid (B) is applied to the ring provided in the coating hair 11 to form a temporary film, a large amount at a time compared to the coating hair 11 formed of a single hair The inner circumferential surface of the perforation hole (A) can be coated. The second waterproof coating liquid immersed and agglomerated between the rings at the ends of the coating hair 11 is formed, and with the rotation and vertical reciprocating movement of the rotary brush 1, the perforation hole A At the inner circumferential surface, the end of the coating hair 11 is pressed and the coating liquid contained therein is released to coat the inner circumferential surface of the perforated hole (A). At this time, it is preferable that the coated surface proceeds radially to the inner circumferential surface and the predetermined depth of the perforation hole (A).

As another embodiment, a plurality of rings may be formed radially in a direction perpendicular to the longitudinal direction of the coating hair 11. Through this, a large amount can be coated at a time, so that the inner circumferential surface of the perforated hole A can be coated without being omitted.

Next, the curling type 113 is provided in a form in which the end of the coating hair 11 is twisted toward the central axis of the rotary brush 1 in a whirlwind shape.

As a specific embodiment, as shown in FIG. 7, the method of coating the inner circumferential surface of the perforated hole A by the coating wool 11 having the end of the curled shape 113 may be performed by the coating wool 11. The immersion step (S4-1) is carried out in which the second waterproof coating liquid (B) is immersed in the form of aggregates at the ends of the coating hair 11 with the waterproof coating liquid (B), and the perforated hole (A) The drawing step (S4-2) is carried out to the end of the coating hair 11 is inserted into the gap. And with the rotation and vertical reciprocating motion of the rotary brush (1), the end of the coating cap 11 is pressed and rolled out from the inner circumferential surface of the perforated hole (A) to expand and release the coating liquid The deformation coating step (S4-3) for coating the inner circumferential surface of the perforated hole (A) is performed. At this time, it is preferable that the coated surface proceeds radially to the inner circumferential surface and the predetermined depth of the perforation hole (A). Next, the returning step (S4-4) is performed in which the end of the coating hair exits the perforated hole and returns to the initial form, and the coating is finished, and the steps S4-1 to S4-4 are performed according to a predetermined process. Can be repeated from single to several times.

That is, the second waterproof coating liquid (B) is buried together to form a temporary aggregate at the end of the coating hair 11 of the curled 113, the end of the coating hair 11 is the rotation of the rotary brush (1) And simultaneously with the vertical movement is drawn into the inner peripheral surface of the perforation hole (A). In addition, friction with the partition wall inside the periphery of the perforated hole A occurs due to the rotation of the rotary brush 1 and the vertical movement of the rotary brush 1. At this time, the ends of the curled hair 11 are stretched and are held. The second waterproof coating liquid (B) is applied to the inner circumferential surface of the perforated hole (A). The end of the coating layer 11 is rolled back to an initial shape while leaving the inner circumferential surface of the perforation hole A. FIG.

As such, the technical configuration of the present invention described above can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and their All changes or modifications derived from an equivalent concept should be construed as being included in the scope of the present invention.

S1: first stage
S2: second stage
S3: Third Step
S4: 4th step
A: Perforation Hall
1: Rotating Brush
11: coated hair
111: branches
112: annular
113: curl type
B: 2nd waterproof coating liquid
S4-1: Immersion stage
S4-2: Retraction Stage
S4-3: Deformation coating step
S4-4: Return step

Claims (7)

In the packaging box coating method of improving the water resistance through the coating,
A first step (S1) of preparing a fabric formed of cardboard or a plurality of paper layers;
A second step (S2) of coating both surfaces of the fabric with a first waterproof coating solution;
A third step (S3) of cutting the fabric into an exploded view through a Thomson process and producing a plurality of perforation holes to manufacture a packaging box; And
And a fourth step (S4) of coating the inner circumferential surface of the perforated hole with a second waterproof coating solution.
The second waterproof coating liquid includes a petroleum wax and a silicone oil,
In the fourth step (S4) includes the coating of the second waterproof coating liquid on the perforated hole using a rotating brush,
The rotating brush is a coating hair is formed radially about the rotation axis,
The terminal of the coating hair is provided with any one selected from a branch shape in which a plurality of branches are formed, a ring shape formed in a ring shape of a circle or a polygon, or a curling shape curled toward a central axis of the rotating brush.
The fourth step (S4) is the immersion step (S4-1) in which the second waterproof coating solution is immersed in the aggregate form at the end of the coating hair, and the step of introducing the coating hair end into the gap of the inner circumferential surface of the perforated hole ( S4-2) and the deformation coating step of coating the inner circumferential surface of the perforated hole by discharging the second waterproof coating liquid at the same time as the end of the coating is deformed by friction by the rotation and vertical movement of the rotating brush (S4-3). And a returning step (S4-4) of returning to the initial form while leaving the perforated end of the coated hair. The method of claim 1,
The first waterproof coating solution is a packaging box coating method comprising a petroleum wax and a vinyl (vinyl) polymer. delete delete delete delete delete

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