KR102147477B1 - multipurpose panel for loading structure - Google Patents

Abstract

The present invention discloses a multipurpose panel with improved adhesion and durability. According to one embodiment of the present invention, in the multipurpose panel consisting of a plurality of inner layer panels (110) bonded by a bonding resin and outer layer panels (120) bonded to upper and lower surfaces of the inner layer panel (110) respectively, the plurality of inner layer panels are provided with the multipurpose panel having improved adhesion and durability in which a plurality of air holes (112) are formed so as to penetrate the width direction along the length direction.

Description

Multipurpose panel with improved adhesion and durability, and manufacturing method thereof {multipurpose panel for loading structure}

The present invention relates to a multi-purpose panel, and more particularly, to prevent rotting due to moisture invasion and moxibustion due to the occurrence of internal air bubbles, thereby improving adhesion and durability, and improving thermal insulation performance. It relates to a multi-purpose panel with improved adhesion and durability used in panels, and a method of manufacturing the same.

In the conventional general panel, compression-molded polystyrene is fixed between both finishes to maintain strength, and for sound insulation and insulation, sound insulation and insulation can be achieved through a space formed between both finishes by the gap maintaining unit. Or, it consists of a composite panel that maintains strength by fixing plywood (mainly plywood) between the finishing materials.

In the above-described conventional general panel, a core material such as an extrusion method thermal insulation plate (heat insulation material), which is a material used for the purpose of insulating heat or blocking heat, and a wooden plywood (mainly plywood) are attached to both sides of the core material. It is manufactured in the form of attaching the finishing material to the outer surface of the wooden plywood again. The core material, wood plywood, and finishing material are attached using an adhesive.

However, in the case of the composite panel manufactured in this way, there are several problems.

First, it is a problem that moisture penetrates into the wood plywood, causing corrosion and resulting in poor quality. Specifically, in the case of a panel used in a vehicle for a freezing tower or a refrigerator, there is a temperature difference between the inside and outside. For example, in the case of a loaded structure used in a loaded vehicle, this is because the temperature inside the loaded structure must be kept low, and condensation is generated due to the temperature difference inside and outside the loaded structure. Since the stacked structure has a form in which a plurality of composite panels are assembled, moisture can easily penetrate into the wood plywood due to condensation. Wood plywood is susceptible to moisture. As the period passes, mold develops, wood rots, or wood is distorted by moisture. Therefore, the wooden plywood is periodically replaced or the life of the composite panel is shortened. The maintenance cost or replacement cost is excessive. That is, in order to improve the insulation efficiency, wood plywood having low thermal conductivity is used, but there is a disadvantage in that the wood is rotted due to moisture penetration or is distorted by moisture, and there is a risk of corrosion due to the characteristics of the material.

Second, the durability is weak. The adhesive that bonds the core, wood plywood, and finish to each other is a thermosetting adhesive. It is common for these adhesives to generate air bubbles when heated. However, it is difficult for these air bubbles to be discharged to the outside in a stacked structure formed by bonding a core material, a wooden plywood, and a finishing material to each other. This is why air bubbles are present in the adhesive or wood in the form of pores. The pores repeatedly contract and expand as the temperature changes repeatedly. Repetition of contraction and expansion is a factor that lowers adhesion and adhesion strength. Therefore, vibrations become frequent depending on local factors (unpaved roads, mountainous areas, etc.), or over time, the core material, wood plywood, and finishing materials are peeled off due to a decrease in adhesion (so-called moxibustion defects). Since the wooden plywood is hard, the vibration absorbing function is relatively inferior, and as the vibration becomes frequent, the fastening parts (bolts, rivets, etc.) become loose. Likewise, the maintenance cost or replacement cost is excessive.

Third, it takes a lot of drying process. That is, when the wood plywood and the core material are bonded together, an adhesive is used. At this time, a drying operation must be performed so that the adhesive, the plywood, and the finishing material are completely cured. This drying operation is to minimize the distortion of the composite panel or moxibustion defects due to moisture contained in the wood.

Accordingly, the applicant of the present invention has devised a multipurpose panel with improved adhesion and durability, and a method of manufacturing the same, so as to solve the conventional problems encountered as described above.

According to an embodiment of the present invention, it is possible to improve the insulation efficiency while preventing the occurrence of moxibustion defects, thereby improving the life and durability, as well as having a low corrosion and damage rate even when invaded, and a drying process compared to the prior art. It is intended to provide a multipurpose panel with improved adhesion and durability and a manufacturing method thereof.

The present invention discloses a multi-purpose panel with improved adhesion and durability. According to an embodiment of the present invention, in a multi-purpose panel comprising a plurality of inner layer panels bonded by a bonding resin and an outer layer panel bonded to the upper and lower surfaces of the inner layer panel, the plurality of inner layer panels have a width along a length direction. A multipurpose panel with improved adhesion and durability in which a plurality of air holes are formed to pass through the direction is provided.

In addition, the present invention consists of a material preparation step of preparing a plurality of inner layer panels and an outer layer panel, which are materials for a multipurpose panel, and a bonding step of bonding the inner layer panel and the outer layer panel prepared through the material provision step using a bonding resin. In the method of manufacturing a composite panel, in the bonding step, a bonding resin is applied to a plurality of inner layer panels, and a portion of the bonding resin penetrates into the first air hole through the through hole. After bonding, the outer layer panel is bonded to the top and bottom of the laminated inner panel before the bonding resin applied to the laminated inner panel is cured, and then pressed under a certain temperature condition to bond the outer layer panel to the inner panel. There is provided a method of manufacturing a multipurpose panel with improved adhesion and durability, characterized in that the manufacturing of the multipurpose panel is completed by sealing both ends of the bonded inner panel and outer panel with a sealant.

In addition, it provides a method of manufacturing a multipurpose panel that can improve insulation performance by forming an air layer by adding a secondary sealing operation of sealing the cut surface with a sealant when cutting the completed multipurpose panel into an applicable size.

The multi-purpose panel with improved adhesion and durability according to the present invention is used in various ways such as door or flooring of a vehicle, and it is lightweight because it has reduced weight by about 30% compared to conventional wooden plywood, so it is possible to lower the overall weight of the vehicle. It can improve efficiency, and as a semi-permanent material, it can be used as a core material for future electric vehicles (EV).

Also. The manufacturing method of the multi-purpose panel can minimize the moxibustion phenomenon by changing the shape of the inner layer in which the air hole is formed even if gas (bubble) is generated during the curing process of the thermosetting adhesive resin, thereby preventing frequent vibration or peeling over time. The durability of the panel can be improved.

In addition, materials such as polyvinyl chloride, ABS, and polypropylene that make up the inner layer of the multi-purpose panel do not generate mold, rot or distort even when moisture penetrates, so the life of the product is significantly improved compared to the case of using conventional wood plywood. Can be.

In addition, it is possible to improve thermal insulation by reducing thermal conductivity through a plurality of air holes formed in the inner layer of the multipurpose panel, and because it is made of materials such as polyvinyl chloride, ABS, and polypropylene, it is dried unlike when using wooden plywood. As there is no need to take a long time, the drying process can be saved, and the overall manufacturing time can be saved.

1 is a schematic view showing a multipurpose panel according to an embodiment of the present invention.
2 is a schematic view showing an exploded view of a multipurpose panel according to an embodiment of the present invention.
3 is a diagram schematically showing an example of using a multipurpose panel according to an embodiment of the present invention.
4 is a diagram schematically showing a modified example of a multipurpose panel according to an embodiment of the present invention.
5 is a view schematically showing another modified example of the multipurpose panel according to an embodiment of the present invention.
6 is a diagram schematically showing a manufacturing process of a multipurpose panel according to an embodiment of the present invention.

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

Prior to this, terms or words used in the present specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so at the time of the present application, they can be replaced. It should be understood that there may be various equivalents and variations.

1 is a view schematically showing a multi-purpose panel according to an embodiment of the present invention, Figure 2 is a view schematically showing an exploded state of the multi-purpose panel according to an embodiment of the present invention.

The multipurpose panel with improved adhesion and durability according to an embodiment of the present invention can be used semi-permanently for a vehicle door, flooring, and multipurpose partition or a loading structure of a loaded vehicle, and weighs about 30% compared to the existing composite panel Can be used as a core material for future automobiles or electric vehicles (EV).

1 and 2, the multi-purpose panel according to an embodiment of the present invention includes an inner layer panel 110 installed in a plurality of stacked layers, and a top and bottom surface of the inner layer panel 110 installed to be stacked. It includes an outer layer panel 120.

The inner layer panel 110 is designed to perform functions and roles such as thermal insulation, sound insulation, sound insulation, and heat insulation. The inner layer panel 110 may be formed of a material such as PP material, that is, polyvinyl chloride, ABS, polypropylene, etc. to prevent corrosion and to be used semi-permanently. Therefore, when using existing wood plywood, the interior of the composite panel may be rotted by moisture contained in the wood, and the joint surface may be peeled off by gas generated when the bonding resin is cured. Since the outer layer panel 120, which will be described later, must be bonded, the working time may increase.

However, the inner layer panel 110 according to an embodiment of the present invention uses a material such as polyvinyl chloride, ABS, polypropylene, etc., and thus has an advantage of not having to take a long drying process. That is, materials such as polyvinyl chloride, ABS, polypropylene, etc. that make up the inner layer panel 110 do not generate mold, rot, or distort even when moisture penetrates, and the life of the product is greater than that of conventional wooden plywood. It can be improved. Therefore, since it is lighter than wood plywood, it is possible to lower the weight of the vehicle when forming the door and floor material or the loading structure, thereby improving the fuel efficiency of the vehicle equipped with the loading structure.

The inner layer panel 110 may have an extruded board shape, and a plurality of air holes 112 may be formed therein as shown in FIGS. 1 and 2. The plurality of air holes 112 may be formed to penetrate the width direction of the inner layer panel 110. A plurality of air holes 112 are formed along the longitudinal direction of the inner layer panel 110, and may be formed to have the same diameter, and air holes 112 having different diameters may be formed in some cases. That is, the heat insulation effect obtained by varying the size of the diameters of the plurality of air holes 112 formed in the inner layer panel 110 may be different according to the purpose of use and the place of use.

In addition, the plurality of air holes 112 are bonded to the inner panel 110 and the inner panel 110 or the inner panel 110 and the outer panel 120 to be described later due to gas (bubble) generated by temperature change. It is possible to minimize the peeling of the part. That is, when gas is generated due to the temperature difference, in the case of the existing wood plywood, there is no place to discharge the gas, so the joint portion is open and the gas is discharged. However, in the case of the present embodiment, when the gas is generated, the shape of the air hole 112 As a result, the inner layer panel 110, the inner layer panel 110, and the outer layer panel 120, which will be described later, may be prevented from being peeled off by minimizing the lifting phenomenon of the bonding portion while being varied. That is, the air hole 112 may cover external force, deformation, and the like.

The air hole 112 may be formed of a first air hole 112a in which a plurality of through holes 113 are formed in communication on the upper surface, and a second air hole 112b in which the through hole 113 is not formed. The first air hole 112a may be interposed between the second air holes 112b. That is, as shown in the drawing, a plurality of second air holes 112b are formed in the width direction along the length direction of the inner layer panel 110, and a first air hole is formed between the second air holes 112b. (112a) can be positioned. At this time, the first air hole (112a) and the second air hole (112b) may be formed to be alternately positioned, but in an embodiment of the present invention, two second air holes after the first air hole (112a) It may be arranged so that (112b) is located and then the first air hole (112a) is located.

In the first air hole 112a in which a plurality of through holes 113 are formed, when the adhesive resin required for bonding the inner panel 110 and the outer panel 120 to be described later is applied, the adhesive resin passes through the first air hole 113. It can be made to penetrate into the hole (112a). Accordingly, the adhesive resin introduced into the first air hole 112a may serve to strengthen the support strength of the inner layer panel 110 while being cured.

The first air hole 112a in which the plurality of through holes 113 are formed allows the gas generated when the adhesive resin is cured when the inner panel 110 and the inner panel 110 and the outer panel 120 to be described later are joined to flow. I can. That is, by allowing the gas generated during curing to flow into the first air hole 112a through the through hole 113, it is possible to prevent the outer layer panel 120 from being lifted when the outer layer panel 120 to be described later is joined. Therefore, when the bonding resin applied to bond the inner panel 110 and the outer panel 120 is cured, gas is discharged to the first air hole 112a to minimize the occurrence of air bubbles, thereby reducing frequent vibration or time. Even after this, the outer layer panel 120 is not thinned out of the inner layer panel 110, so that durability may be improved. In other words, there is no moxibustion defect phenomenon, so the quality of the product can be improved.

Meanwhile, as shown in the drawings, the inner layer panel 110 used in the exemplary embodiment of the present invention may be provided in plural and stacked in multiple layers. That is, the inner layer panel 110 may be formed to be stacked to be at least two or more layers. For example, as shown in Figure 3, it can be used by stacking in various ways, such as 2, 3, or 5 layers.

At this time, in an embodiment of the present invention, as shown in the drawing, the inner layer panel 110 is stacked so that the air holes formed to penetrate the width direction face the same direction, but in some cases, as shown in FIG. The inner layer panel 110 may be stacked so as to change the penetration direction of 112. That is, the first inner layer panel 110a positioned at the bottom allows the air hole 112 to pass through the left direction in the drawing, and the second inner layer panel 110b stacked on the upper side of the first inner layer panel 110a The inner layer panel 110 may be stacked so that the hole 112 passes through the right direction in the drawing, or so that the direction through which the air hole 112 passes is changed.

In addition, the inner layer panel 110 used in the embodiment of the present invention has a plurality of air holes 112 formed on one side in the width direction as described above, but as shown in FIG. 5, the inner panel 110 An air hole 112 may be formed to penetrate the left and right sides in the width direction of ).

In addition, a sealant to form an air layer by sealing the air hole 112 at both ends of the inner layer panel 110 in the lateral direction, that is, both sides formed through the air hole 112 according to an embodiment of the present invention. Can be applied. That is, by sealing both ends of the inner layer panel 110 penetrating through the air hole 112 with a sealant, air in the air hole 112 is not discharged to the outside, thereby improving thermal insulation.

In addition, since the inner layer panel 110 is formed of a material such as polyvinyl chloride, ABS, polypropylene, etc., it is more resistant to invasion than wood plywood, and does not generate mold, rot or distort even when moisture penetrates, so the life of the panel is reduced. It is greatly increased, and the drying time can be reduced, such as no need to have a long drying time unlike when using wood plywood, which can reduce the overall manufacturing time.

In addition, the inner layer panel 110 is formed of a polypropylene material, and a plurality of air holes 112 are formed in the width direction, so that the inner layer panel 110 is lighter than the wood plywood. Accordingly, when a vehicle door, a floor material, and a loading structure are formed as a multipurpose panel and applied to a vehicle, the weight of the vehicle can be greatly reduced, thereby improving the fuel efficiency of the vehicle.

Meanwhile, the outer layer panel 120 is bonded to the inner layer panel 110 through a bonding resin, and may be selected from glass fiber reinforced plastic or aluminum. The material of the outer layer panel 120 is more preferably a glass fiber reinforced plastic. The glass fiber reinforced plastic may include polypropylene, fibrous glass, and additives.

Hereinafter, a method of manufacturing a multipurpose panel having improved adhesion and durability of the present invention will be described.

First, it includes a plurality of inner layer panels 110 used as a material for a multipurpose panel. The plurality of inner layer panels 110 has an air hole 112 formed to pass through one side width direction, and a first air hole 112a and a through hole 113 in which the air hole 112 through hole 113 is formed. It consists of a second air hole (112b) that is not formed. The plurality of through holes 113 formed in the air hole 112a are described as being molded during the manufacture of the inner layer panel 110 in one embodiment of the present invention, but a drill or the like is used in the bonding step to be described later. It can also be formed.

Thereafter, an outer layer panel 120 bonded to the outer peripheral surface of the inner layer panel 110 is provided. The outer layer panel 120 forms the exterior of the multi-purpose panel, and is made of light and strong glass fiber reinforced plastic, AL, GI, or the like.

As described above, a bonding step is performed after the material preparation step of preparing the plurality of inner layer panels 110 and the outer layer panels 120 used as materials for the multipurpose panel.

6 is a diagram schematically showing a manufacturing process of a multipurpose panel according to an embodiment of the present invention.

Referring to FIG. 6, the bonding step is a step of contacting the provided inner panel 110 and the outer layer panel 120 using a bonding resin. When the material of the multipurpose panel is prepared, the upper surface of the plurality of inner layer panels 110 Apply adhesive resin to Next, another inner layer panel 110 is positioned on the inner layer panel 110 to which the adhesive is applied. Thereafter, when a plurality of the inner layer panels 110 are bonded by the bonding resin, the bonding resin is applied to the upper and lower surfaces of the bonded inner panel 110. In this case, the bonding resin applied to the inner layer panel 110 is more than the amount applied between the inner layer panel 110 and the inner layer panel 110 in consideration of penetrating into the first air hole 112a through the through hole 113. Apply a large amount. Next, before the bonding resin applied to the inner layer panel 110 is cured, the outer layer panel 120 is bonded to each other and then heated and compressed to bond the outer layer panel 120 to the inner layer panel 110. Next, the manufacture of the multipurpose panel is completed by sealing both ends of the bonded inner panel 110 and outer panel 120 with a sealant.

Therefore, it is possible to improve the insulation efficiency while preventing the occurrence of moxibustion defects, thereby improving the life and durability, as well as a low corrosion and damage rate even when invaded, and a multipurpose panel with improved adhesion and durability so that the drying time is not long. Will be able to get.

In addition, in the multipurpose panel with improved adhesion and durability according to an embodiment of the present invention, when the completed multipurpose panel is cut to an applicable size as described above, a secondary sealing operation of sealing the cut surface generated by cutting with a sealant may be added. I can.

That is, when the multi-purpose panel is cut according to the size of the place of use, the air hole 112 can be exposed to the outside and the insulation efficiency can be reduced. By sealing it, the insulation efficiency is prevented from decreasing and moisture intrusion is prevented. Do it.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things that have equivalent or equivalent modifications to the claims as well as the claims to be described later fall within the scope of the inventive concept. .

110: inner layer panel
112: air hole
112a: 1st air hole
112b: 2nd air hole
113: through hole
120: outer layer panel

Claims (12)

In a multi-purpose panel consisting of a plurality of inner layer panels 110 bonded by a bonding resin and an outer layer panel 120 bonded to the upper and lower surfaces of the inner layer panel 110, respectively,
The plurality of inner layer panels are formed with a plurality of air holes 112 to pass through the width direction along the length direction, and the air hole 112 is a first air hole formed to communicate with a plurality of through holes 113 on the upper surface. It consists of (112a) and a second air hole (112b) in which the through hole 113 is not formed,
In the first air hole 112a, when a bonding resin for bonding the inner panel and the inner panel or the outer panel 120 is applied, the bonding resin penetrates to improve the support strength of the inner panel 110. Multi-purpose panel with improved adhesion and durability, characterized in that. delete delete The multipurpose panel of claim 1, wherein the first air hole (112a) and the second air hole (112b) are formed to be alternately formed with each other. The method according to claim 1, wherein both ends of the inner layer panel 110 in which the first air hole 112a and the second air hole 112b are formed are treated with a sealant to provide the first air hole 112a and the second air hole 112b. ) Multi-purpose panel with improved adhesion and durability, characterized in that it can be sealed. The multipurpose panel according to claim 1, wherein the plurality of inner layer panels are laminated with at least one inner layer panel, and have improved adhesion and durability that can be stacked in three or more layers. The multipurpose panel of claim 1, wherein the plurality of laminated inner layer panels are formed to penetrate through the air holes to face the same direction. The multipurpose panel of claim 1, wherein the inner layer panel in which the plurality of layers are stacked is laminated so that the air hole and the air hole are positioned at right angles. The multipurpose panel according to claim 1, wherein the inner layer panel has improved adhesion and durability formed to penetrate both front and rear left and right sides in the width direction. The multipurpose panel according to claim 1, wherein the plurality of air holes 112 may have a variable shape when an external force is applied, and have improved adhesion and durability that can vary in diameter according to a usage and a location. A material preparation step of preparing a plurality of inner layer panels 110 and outer layer panels 120 that are materials for the multipurpose panel of claim 1,
In the manufacturing method of a composite panel consisting of a bonding step of bonding the inner layer panel and the outer layer panel prepared through the material preparation step using a bonding resin,
The bonding step
A bonding resin is applied to a plurality of inner layer panels, but the inner layer panel and the inner layer panel are joined in such a way that a part of the bonding resin penetrates into the first air hole 112a through the through hole 113, and then laminated. Before the bonding resin applied to the inner layer panel 110 is cured, the outer layer panel 120 is bonded to the top and bottom of the laminated inner layer panel, and then each of the bonded inner layer panel 110 and the outer layer panel 120 A method of manufacturing a multipurpose panel with improved adhesion and durability, characterized in that the manufacturing of the multipurpose panel is finished by sealing both ends with a sealant. The method of claim 11, wherein when the finished multi-purpose panel is cut to an applicable size, a secondary sealing operation of sealing the cut surface with a sealant can be added, thereby improving adhesive strength and durability with improved insulation.

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