KR20080079908A - A plastic corrugated cardboard - Google Patents

Abstract

A plastic corrugated cardboard is provided to enable an upper board and a lower board to have different hardness by making them of different materials and to save production cost by using recycling materials in one of the upper and the lower board. A plastic corrugated cardboard comprises: an upper board(10) to protect contents in a box made of the corrugated cardboard, which can be made from polyamid(PA), polyester(PE), polyacetal(POM), polycarbonate(PC), polysulfone(PSF), polyetersulfone(PES), and polyphenyleneeter(PPE); a lower board(20); multiple ribs(30) to support the lower board to be separated in a certain distance from the upper board; and multiple shock absorbing holes(40) which are formed in the multiple ribs and mitigate external impacts on the corrugated cardboard.

Description

Plastic Corrugated Cardboard {A PLASTIC CORRUGATED CARDBOARD}

1 is a perspective view of a plastic corrugated cardboard according to the present invention,

2 is a cross-sectional view of the plastic corrugated cardboard according to the first embodiment,

3 is a cross-sectional view of the plastic corrugated cardboard according to the second embodiment.

Figure 4 is a side cross-sectional view of a molding apparatus for molding a plastic corrugated cardboard according to the present invention,

5 is an enlarged view of a portion A of FIG. 4,

6 is a cross-sectional view of a molding die of a molding apparatus for molding plastic corrugated cardboard according to the present invention;

7 is a flowchart illustrating a molding method of molding plastic corrugated cardboard according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: upper plate 20: lower plate

30: rib 40: buffer hole

50: upper flow path 52: upper inlet

54: upper flow part 56: upper outflow part

58: upper buffer 59: upper molding material

60: lower flow path 62: lower inflow portion

64: lower flow portion 66: lower flow portion

68: lower shock absorber 69: lower molding material

70: forming mold 80: air blow

The present invention relates to a plastic corrugated cardboard, in particular, characterized in that the upper plate material and the lower plate material of the plastic cardboard is provided with a different material.

In general, corrugated paper is widely used for packing goods or various household goods for carrying or storing goods, and in the past, paper or wood corrugated cardboard was mainly used.

Such conventional corrugated paper mainly used paper or wood, but the paper or wood corrugated paper has a relatively short service life and is cumbersome for producing corrugated paper, which not only lowers production efficiency but also increases production cost. There was a problem.

In other words, corrugated paper made of paper is not easy to be processed into a curved shape or the like, and is easily torn when contacted with moisture or moisture, thereby shortening the service life of the paper material. Bonding is performed by a bonding method of bonding in a state where several sheets of laminated paper are stacked, and the weight of the wood material itself is relatively heavy compared to the paper material, which causes a lot of difficulties in transportation.

In addition, the wood material also has a problem in that, after a certain period of time as the paper absorbs moisture, the adhesive force is dropped by the absorbed moisture and the plywood falls.

Since such paper or wood corrugated paper is easily damaged and cannot be reused, plastic corrugated cardboard having excellent durability and abrasion resistance has been widely used in recent years.

That is, the plastic corrugated cardboard is used to prevent damage to the product until the product produced at the factory is delivered to the consumer, or to prevent damage to the product and ease of transportation when moving from home.

However, the conventional plastic corrugated cardboard is provided with the same upper material and the lower plate material, in this case, the hardness of the upper plate material and the lower plate material was also the same. Here, like the packaging box, even if the hardness of the plate exposed to the outside and the plate contacting the packaging product needs to be different, there was a problem that the molding with only the same hardness.

 That is, in the case of a plate exposed to the outside, a plate of relatively high hardness is required to withstand external forces, but in the case of a plate in contact with a packaging product, a soft material, that is, a relatively low hardness, is used to protect the packaging product. It may require a plate, and even in this case, there is a problem that the plate exposed to the outside and the plate in contact with the packaging product is produced with the same hardness only.

In addition, when the upper plate material and the lower plate material of the plastic corrugated cardboard is provided with the same material, there is a problem that the production cost is increased than any one of the upper plate material and the lower plate material provided by the recycled material.

On the other hand, when the upper plate and the lower plate of the plastic corrugated cardboard is provided with the same material, the color of the upper plate and the lower plate is the same, and the user can not have a desired color for each of the upper plate and the lower plate. There was a problem.

Accordingly, it is an object of the present invention to provide a plastic corrugated cardboard which is provided with a top plate and a bottom plate made of different materials, and may have different hardnesses of the top plate and the bottom plate.

In addition, another object of the present invention is to provide a plastic corrugated cardboard which can reduce the production cost of any one of the upper plate and the lower plate is made of a recycled material.

In addition, another object of the present invention to provide a plastic corrugated cardboard that can be provided with different colors of the upper plate and the lower plate.

The present invention is devised to improve the above problems of the plastic corrugated cardboard, characterized in that the upper plate and the lower plate is provided with a different material.

In order to achieve the above object, the present invention is the top plate; A bottom plate; A plurality of ribs coupled to the upper plate and the lower plate to support the upper plate and the lower plate at a predetermined interval; A buffer hole is provided between the plurality of ribs to mitigate an external impact. The upper plate and the lower plate may be formed of different materials and combined.

Here, the upper plate and the lower plate is provided with any one of high density polyethylene (HDPE), low density polyethylene (LDPE), polystyrene (PS), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET) Can be.

In addition, any one of the upper plate and the lower plate may be formed with a UV coating layer.

Here, the color of the upper plate and the lower plate may be different.

Preferably, the buffer hole may be provided in a rectangular shape.

In addition, the plastic corrugated cardboard, the upper flow path through which the molten molding material flows in from the top; A lower channel through which molten molding material of a different material from the molding material flowing into the upper channel flows from the lower part; The plastic corrugated cardboard molding apparatus includes an air blower for injecting air so that the molten molding material flowing out of the upper flow passage can stably enter the mold. It can be molded by a plastic corrugated sheet forming apparatus comprising a; molding mold for molding plastic corrugated cardboard by the molding material flowing out of the upper passage and the molding material flowing out of the lower passage.

Here, the upper flow path of the plastic corrugated cardboard forming apparatus may further include an upper buffer portion and a lower buffer portion for mitigating the impact caused by hydraulic pressure.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

1, the plastic corrugated cardboard according to the present invention is coupled to the upper plate 10, the lower plate 20, the upper plate 10 and the lower plate 20, and the upper plate 10. ) And the plurality of ribs 30 to support the lower plate member 20 spaced apart at regular intervals, and a buffer hole 40 provided between the plurality of ribs 30 to mitigate external shocks. The upper plate material 10 and the lower plate material 20 may be made of different materials and combined.

Hereinafter, each configuration will be described in detail.

1 to 3, the upper plate 10 is provided to protect the products inside the packaging box when manufacturing the packaging box using the plastic corrugated cardboard.

Here, the upper plate material 10 may be provided with various kinds of plastics. That is, the top plate 10 is polyamide (PA), polyester (PE), polyacetal (POM), polycarbonate (PC), polysulfone (PSF), polyether sulfone (PES), polyphenylene ether (PPE) or the like.

Here, the top plate 10 is a high-density polyethylene (HDPE: High Density PolyEthylene), low density polyethylene (LDPE: Low Density PolyEthylene), polystyrene (PS: PolyStyrene), polypropylene (recyclable plastic) presented by the Ministry of Environment PP: PolyPropylene, polyvinyl chloride (PVC: Polyvinyl Chloride), polyethylene terephthalate (PET: polyethylene terephthalate) is preferably provided with any one.

In addition, the top plate 10 may be used by mixing the six recycled plastics, of course.

Here, the upper plate 10 and the lower plate 20 may be provided with a different material. In this case, the upper plate 10 and the lower plate 20 may be provided in a variety of colors, the upper plate 10 or the lower plate 20 provided with different materials may be provided in different colors. have.

That is, different pigments are injected into the molten molding material for forming the upper plate 10 and the molten molding material for forming the lower plate 20 so that the upper plate 10 and the lower plate 20 are mutually different. It may be arranged to form other colors.

In addition, the upper plate 10 and the lower plate 20 may add various additives, whereby the upper plate 10 and the lower plate 20 to improve the properties such as strength and hardness Can be.

On the other hand, the upper plate 10 and the lower plate 20 may be formed with a UV coating layer. In this case, a UV coating agent is added to the molten molding material forming the upper plate 10 and the lower plate 20, and then coated, and then irradiated with ultraviolet rays to cure. Here, the UV coating layer may be formed in the shape of various patterns or letters.

Here, the upper plate 10 may be provided to have various sizes and thicknesses. That is, the plastic corrugated cardboard may be provided to have a suitable size and thickness for use.

On the other hand, the upper plate 10 and the lower plate 20 is connected to the rib 30, is supported by the rib 30 spaced apart at regular intervals. In this case, the ribs 30 are provided in plural and are provided to have a predetermined interval between the upper plate 10 and the lower plate 20 to form the buffer hole 40.

1 to 3, the lower plate 20 is provided to protect products inside the packaging box when the packaging box is manufactured using the plastic corrugated cardboard.

Here, the lower plate 20 may be provided with various kinds of plastic. That is, the lower plate 20 is polyamide (PA), polyester (PE), polyacetal (POM), polycarbonate (PC), polysulfone (PSF), polyether sulfone (PES), polyphenylene ether (PPE) or the like.

Here, the lower plate 20 is a high density polyethylene (HDPE: High Density PolyEthylene), low density polyethylene (LDPE: Low Density PolyEthylene), polystyrene (PS: PolyStyrene), polypropylene (PP: PolyPropylene), polyvinyl chloride (PVC: Polyvinyl Chloride), polyethylene terephthalate (PET: polyethylene terephthalate) is preferably provided with any one.

In addition, the lower plate 20 may be provided by mixing the six recycled plastics.

Here, the lower plate 20 may be provided to have various sizes and thicknesses. That is, the plastic corrugated cardboard may be provided to have a suitable size and thickness for use.

The rib 30 is provided to space the upper plate 10 and the lower plate 20 at regular intervals.

The ribs 30 are provided in plural, as shown in FIG. 2, and one side of the ribs 30 is provided to be connected to the upper plate 10 and the other side to the lower plate 20, respectively. As a result, the plurality of ribs 30 may support the upper plate 10 and the lower plate 20.

Here, the rib 30 may be provided with various materials, for example, the rib 30 may be provided with the same material as the material constituting the upper plate 10 or the lower plate 20. That is, as shown in FIG. 2, the same molding material as the molding material for forming the upper plate member 10 forms one side of the rib 30, and the same molding as the molding material for forming the lower material. Material may be provided to form the other side of the rib 30.

On the other hand, the rib 30 may be provided in various shapes. That is, as shown in Figure 2 or 3, according to the various shapes of the buffer hole 40, it may be provided in a shape corresponding to this.

The buffer hole 40 is provided between the plurality of ribs 30 to mitigate an impact from the outside.

The buffer hole 40 is a plurality of predetermined spaces formed between the plurality of ribs 30, and forms an air layer in the predetermined space, and is applied to the upper plate 10 or the lower plate 20. It is provided to cushion the shock from.

Here, the buffer hole 40 may be provided to have various shapes. That is, as shown in FIG. 2, it may be provided in a rectangular shape, and as shown in FIG. 3, it may be provided in a circular shape. In addition, the buffer hole 40 may be provided in a shape other than the rectangular or circular shape, of course.

Hereinafter, the molding apparatus for molding the plastic corrugated cardboard according to the present invention will be described.

Referring to FIG. 4, the upper flow path 50 is provided such that the molten upper forming material 59 flows in to form the upper plate material of the plastic corrugated cardboard. In this case, the molten upper molding material 59 flowing through the upper passage 50 may be formed of a different material from the molten lower molding material 69 flowing through the lower passage 60. It may also be made of recyclable plastic material.

Here, the upper flow path 50 flows through the upper inflow portion 52 into which the molten upper molding material 59 flows, and the molten upper molding material 59 flowing through the upper inflow flow portion 52. It is connected to the upper flow portion 54 and the molding frame 70 for molding the upper plate of the plastic corrugated cardboard, the molten upper molding material 59 flowing through the upper flow portion 54 is the main mold The upper outlet portion 56 may be provided to allow the molten upper forming material 59 to flow out so as to enter the 70.

That is, the molten upper forming material 59 introduced through the upper inflow portion 52 flows through the upper flow portion 54 and flows out of the upper inflow portion 52 to form the mold 70. It may be provided to enter).

In this case, the upper flow portion 54 may be provided with a different diameter than the upper outlet portion 56, as shown in FIG. That is, the upper outlet portion 56 may be provided with a diameter corresponding to the size of the molding die 70, the upper flow portion 54 is a large amount of molten upper forming through the upper flow portion 54 The material 59 may be provided to have a larger diameter than the upper outlet 56 so that the material 59 may flow.

In addition, as illustrated in FIG. 4, the diameter of the upper flow path 50 is rapidly reduced due to the difference in diameter between the upper flow part 54 and the diameter of the upper outlet part 56. It may be provided to include the upper buffer 58 to prevent it from being.

That is, the upper flow path 50 is impacted by hydraulic pressure due to the difference in diameter between the upper flow portion 54 and the upper discharge portion 56 between the upper flow portion 54 and the upper discharge portion 56. It may include an upper buffer 58 for mitigating.

Meanwhile, as illustrated in FIG. 5, the upper outlet part 56 may be connected to an upper portion of the forming mold 70 for molding the plastic corrugated cardboard, and the melt flowing out through the upper outlet part 56. The upper molding material 59 may be provided to enter the upper portion of the main mold 70 to form the upper plate of the plastic corrugated cardboard.

In this case, the plastic corrugated sheet forming apparatus may additionally include an air blow 80, the air blow 80 is a molten upper molding material 59 is discharged from the upper flow path 50 is the molding frame ( 70 may be injected to the air to stably enter the upper portion.

Referring to FIG. 4, the lower flow path 60 is provided so that the molten lower molding material 69 flows in to form the lower plate material of the plastic corrugated cardboard. In this case, the molten lower molding material 69 flowing through the lower channel 60 may be formed of a different material from the molten upper molding material 59 flowing through the upper channel 50. It may also be made of recyclable plastic material.

Here, the lower flow path 60 flows through the lower inflow portion 62 into which the molten lower molding material 69 flows, and the molten lower molding material 69 introduced through the lower flow inflow portion 62. The lower flow portion 64 is connected to the molding die 70 for molding the lower plate of the plastic corrugated cardboard, the molten lower molding material 69 flowing through the lower flow portion 64 is the main mold It may be provided with a lower outflow portion 66 for outflowing the molten lower molding material 69 so as to enter the (70).

That is, the molten lower molding material 69 introduced through the lower inflow portion 62 flows through the lower flow portion 64 and flows out of the lower inflow portion 62 to form the mold 70. It may be provided to enter).

In this case, the lower flow portion 64 may be provided with a different diameter than the lower flow portion 66, as shown in FIG. That is, the lower outlet portion 66 may be provided with a diameter corresponding to the size of the molding die 70, the lower flow portion 64 is a large amount of the molten lower molding through the lower flow portion 64 The material 69 may be provided to have a larger diameter than the lower outlet 66 so that the material 69 may flow.

In addition, as shown in FIG. 4, the diameter of the lower flow path 60 decreases rapidly due to a difference between the diameter of the lower flow part 64 and the diameter of the lower outlet part 66. It may be provided to include the lower shock absorbing portion 68 to prevent.

That is, the lower flow path 60 is an impact due to hydraulic pressure due to the difference in diameter between the lower flow portion 64 and the lower discharge portion 66 between the lower flow portion 64 and the lower discharge portion 66. It may include a lower buffer 68 for mitigating.

Meanwhile, as shown in FIG. 5, the lower outlet portion 66 may be connected to a lower portion of the forming mold 70 for molding the plastic corrugated cardboard, and the melt flows out through the lower outlet portion 66. The lower molding material 69 may be provided to enter the lower portion of the main mold 70 to form the lower plate of the plastic corrugated cardboard.

The mold 70 is formed to mold the plastic corrugated cardboard using the upper molding material 59 flowing out of the upper passage 50 and the lower molding material 69 flowing out of the lower passage 60.

Referring to FIG. 6, the molding die 70 has one side connected to the phase floating portion 56 of the upper flow passage 50, and the molten upper forming material flowing out of the upper discharge portion 56. 59 can be molded to form the top plate of the plastic corrugated cardboard.

In addition, the other side of the mold 70 is connected to the lower outlet portion 66 of the lower flow path 60, the molten lower molding material 69 flowing out of the lower outlet portion 66 is the plastic It can be molded to form the lower plate of the corrugated cardboard.

In this case, the molten upper molding material 59 flowing out of the upper outlet part 56 and the molten lower molding material 69 flowing out of the lower flow path 60 may be formed of different materials. The upper plate and the lower plate may be molded of plastic corrugated cardboard which may be provided with different materials.

Here, in order to allow the molten upper forming material 59 flowing out of the upper outlet 56 to stably enter the mold 70, the air blow 80 is the upper outlet 56 It may be provided to inject air to the molten upper forming material (59) flowing out from.

In addition, the molding die 70 may be directly connected to the air blow 80, as shown in Figure 5 and 6, which is, the air blow 80 is stably fixed to the molding die 70 This is to inject air into).

The air blower 80 supplies air to the molten upper forming material 59 so that the molten upper forming material 59 flowing out of the upper flow passage 50 can stably enter the forming mold 70. Can spray

That is, the molten upper forming material 59 flowing out of the upper outlet part 56 of the upper passage 50 enters the mold 70 by the weight of the molten upper forming material 59. It may fall in the direction of gravity before it can be, in this case, there may occur a case where the molten upper forming material 59 is not enough to enter the plastic mold 70 to form the plastic corrugated cardboard.

Here, as shown in FIG. 5, the air blower 80 sprays air onto the molten upper forming material 59 flowing out of the upper outlet 56, and thus the molten upper forming material 59. It is provided to prevent the fall in the gravity direction due to its own weight.

Example (see FIG. 7)

Hereinafter, the molding process of the plastic corrugated cardboard according to the present invention will be described.

This embodiment is only one example of molding the plastic corrugated cardboard according to the present invention, and it is noted that the plastic corrugated cardboard can be molded by various methods.

First, the molten upper molding material 59 is introduced into the upper passage 50 of the plastic corrugated cardboard molding apparatus. Here, the plastic corrugated sheet forming apparatus is provided to include an upper flow path 50 for molding the upper plate material 10 and a lower flow path 60 for molding the lower plate material 20. (S10)

In this case, the molten upper molding material 59 may be made of various plastics, and may also use recycled materials.

Next, the molten lower molding material 69 different from the upper molding material 59 flowing into the upper channel 50 is introduced into the lower channel 60. (S20)

Here, the lower flow path 60 may use a molten lower molding material 69 provided with various kinds of plastics, and may also use recycled materials. However, the molten lower molding material 69 flowing into the lower channel 60 should be made of a different material from the molten upper molding material 59 flowing into the upper channel 50.

Next, the air is injected into the molding material introduced from the upper flow path 50 through the air blow 80 provided in the plastic corrugated sheet forming apparatus. (S30)

That is, the molten molding material flowing out of the upper flow path 50 may fall in the gravity direction before entering the molding mold 70 by the own weight of the molten molding material. In this case, the molding mold 70 ), There may occur a case in which the molten upper forming material 59 sufficient for forming the plastic corrugated cardboard does not enter.

Here, the air blower 80 blows air to the molten upper forming material 59 flowing out of the upper flow path 50 so that the molten upper forming material 59 falls in the direction of gravity due to its own weight. Can be prevented.

Next, plastic corrugated cardboard is formed by using the upper molding material 59 of the upper passage 50 and the lower molding material 69 of the lower passage 60. (S40)

That is, the molten upper molding material 59 flowing out of the upper passage 50 enters the upper portion of the forming mold 70 to form the upper plate 10 of the plastic corrugated cardboard, and the lower passage 60 The molten lower molding material 69 flowing out from the lower portion of the mold 70 to form the lower plate 20 of the plastic corrugated cardboard.

In this case, the molten molding material flowing out of the upper passage 50 and the molten molding material flowing out of the lower passage 60 are provided with different materials, whereby, the plastic corrugated cardboard is the upper plate member 10. And it may be molded so that the material of the lower plate 20 is different.

As described above, the plastic corrugated paper according to the present invention, the upper plate and the lower plate is provided with a different material, the hardness of the upper plate and the lower plate may be configured differently.

In addition, any one of the upper plate and the lower plate may be made of recycled materials to reduce the production cost.

In addition, the color of the upper plate and the lower plate of the plastic corrugated cardboard may be provided differently.

Claims (7)

An upper plate; A bottom plate; A plurality of ribs coupled to the upper plate and the lower plate to support the upper plate and the lower plate at regular intervals; Consists of a buffer hole provided between the plurality of ribs to mitigate the impact of the outside, The upper plate material and the lower plate material is a plastic corrugated cardboard, characterized in that coupled to provide a different material. The method of claim 1, The upper plate and the lower plate is made of any one of high density polyethylene (HDPE), low density polyethylene (LDPE), polystyrene (PS), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET) Characterized by plastic corrugated cardboard. The method of claim 1, Plastic corrugated cardboard, characterized in that any one of the upper plate and the lower plate is formed with a UV coating layer. The method of claim 1, Plastic corrugated cardboard characterized in that the color of the upper plate and the lower plate is different. The method of claim 1, The buffer hole is a plastic corrugated cardboard, characterized in that provided in a rectangular shape. The method according to any one of claims 1 to 4, The plastic corrugated cardboard, An upper flow path through which molten molding material flows from the upper part; A lower channel through which molten molding material of a different material from the molding material flowing into the upper channel flows from the lower part; The plastic corrugated cardboard molding apparatus includes an air blower for injecting air so that the molten molding material flowing out of the upper flow passage can stably enter the mold. Plastic corrugated cardboard, characterized in that formed by a plastic corrugated cardboard forming apparatus comprising a; molding frame for molding the plastic corrugated cardboard by the molding material flowing out of the upper passage and the molding material flowing out of the lower passage. The method of claim 6, The upper flow path of the plastic corrugated cardboard forming apparatus further comprises an upper shock absorber and a lower shock absorber for mitigating a shock caused by hydraulic pressure.

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