KR20090023032A - Plate having excellent shock-resistancy and flame retardancy - Google Patents

Abstract

A plate with a superior shock resistance and the fire retardance is provided that the plate in which durability, and the use term are short can be replaced. A plate with a superior shock resistance and the fire retardance comprises a first layer(10) consisting of ABS, polycarbonate, and the material selected between ASA over one at least, a second layer(20) positioned in the lower part of the first layer, a third layer(30) positioned in the lower part of the second layer. The second level is made of the aperture section ash in which a plurality of air gaps is formed in inside. The aperture section ash is the honeycomb structure in which a plurality of the supporting part in which the air gap is formed in inside of the hexagonal pillar shape is connected.

Description

Plate having excellent shock-resistancy and Flame retardancy}

The present invention relates to a plate composed of a multilayer having excellent impact resistance and flame retardancy, and being lightweight.

Plates are widely used for interior and exterior materials of ships and buildings. Conventionally, a plate mainly made of wood or metal has been used. However, such a plate made of wood or metal is required to be replaced due to rust or wear as the period of use elapses, and the replacement is difficult due to its weight. Was considerable.

 In particular, when used as shipbuilding equipment, the plate of wood or metal material is often in contact with moisture, such as the scaffold of the ship, the corrosion progresses faster due to the occurrence of rust caused by moisture or the generation of microorganisms such as mold. Therefore, due to the burden of the cost of frequent replacement of the plate, a new type of plate that can reduce the number of replacements and the cost is urgently required.

In addition, wooden solid wood, plywood, MDF, etc. are expensive raw materials and are vulnerable to heat resistance, heat insulation, and sound insulation. And when used in a humid environment, there were problems such as torsion, cracking, swelling.

In addition, in the case of collecting and reusing the conventional plate made of wood or the like due to such a problem, only about four times of reuse is possible, and thus a number of times of reusable plates is required in terms of recycling of resources.

Therefore, a long service life is required to reduce the number of replacements, and when the replacement is necessary, the plate is easy to be processed and transported so that the cost and replacement work can be easy and low cost, and a strong flame retardant and impact resistance is urgently required.

The problem to be solved by the present invention is to provide a plate excellent in light weight, durability, impact resistance, flame retardancy, recyclability, etc. that can replace the conventional heavy, durable, short plates.

Plate according to the present invention is a second layer consisting of a first layer made of a material selected from at least one of ABS, polycarbonate, ASA, and a lower portion of the first layer, a plurality of voids formed therein; Located at the bottom of the second layer, and comprises a third layer made of at least one material selected from ABS, polycarbonate, ASA.

In addition, the pore member may be a honeycomb having a structure in which a plurality of hexagonal pillar-shaped support portions having voids formed therein are connected.

In addition, the pore member may be a short plastic in which a plurality of semi-cylindrical supports having voids formed therein are connected.

In addition, the pore member may be a short plaque in which a plurality of rectangular pillar-shaped support portions having voids formed therein are connected.

In addition, the air gap member may be two or more support plates in which a plurality of rectangular shaped supports are disposed to be spaced apart from each other.

In addition, the pore member may be made of a material selected from polypropylene and ABS.

In addition, the thickness of the first layer and the third layer may be 2 ~ 5mm, the thickness of the second layer may be 15 ~ 25mm.

In addition, a filler may be further filled in the gap of the gap member.

In addition, the bonding between the first layer and the second layer and the bonding between the second layer and the third layer may be by thermal fusion.

In addition, the bonding between the first layer and the second layer and the bonding between the second layer and the third layer may be by an adhesive.

In addition, the nonwoven fabric layer may be further included between the first layer and the second layer, and between the second layer and the third layer.

In addition, one or more protrusions may be formed on a surface of the second layer to be joined to the first layer and a third layer, and a surface corresponding to the protrusion may be formed to a bonding surface of the first layer and to the second layer of the third layer. Grooves may be formed.

In addition, the first layer and the third layer is a plate, characterized in that the multilayer sheet selected from polycarbonate / ABS, ABS / ASA, ASA / polycarbonate.

In addition, irregularities may be formed on the bonding surface of the polycarbonate and the ABS resin.

In addition, a protrusion may be further formed on the side surface of the unevenness.

In addition, the surface of at least one layer of the first layer and the third layer may be embossed.

In addition, the plate according to the present invention may further include a side shielding member for shielding the side of the plate.

The apparatus may further include an upper shielding member and a lower shielding member that shield the upper and lower portions of the plate.

In addition, the upper shielding member, the lower shielding member and the side shielding member may be a connection shielding member connected to one.

The apparatus may further include a fixing member for fixing the side shielding member, the upper shielding member, and the lower shielding member to the plate.

According to the present invention, it is possible to provide a plate having improved durability, flame retardancy, impact resistance and weather resistance while reducing weight. Therefore, not only the service life of the plate can be extended, but also the weight can be easily replaced and the raw material cost is low, thereby reducing the replacement cost.

As shown in FIG. 1, the plate according to the present invention includes a first layer 10, a second layer 20, and a third layer 30.

The first and third layers are made of at least one material selected from ABS, polycarbonate, and ASA. In the past, the outer surface of the plate is made of wood or metal, and is rusted or corroded when contacted with moisture. Although a lot of damage was made, ABS, polycarbonate, ASA is resistant to corrosion, so the service life can be greatly increased.

In addition, in the case of the first layer and the third layer in contact with the outside, there is almost no void in the interior, so that rust generation that may occur in adjacent parts or the like due to the internal moisture contained in the plate can be suppressed.

In addition, ASA, ABS, polycarbonate is strong impact resistance, thereby preventing damage to the outer surface of the plate by the heavy material.

The second layer is composed of a void member having a plurality of voids therein.

The first and third layers do not have voids to prevent damage due to the external environment, while the second layer has a plurality of voids for lightening and shock absorbing functions of the plate according to the present invention.

Due to the internal voids in the second layer, the plate according to the present invention is lightweight and not only simple to transport and install, but also greatly reduce raw material costs. That is, since the weight is about one third of that of the conventional plywood, it is easy to transport and install.

In addition, the void member having a plurality of voids therein not only absorbs the shock applied to the plate by the inner void, but also has a heat insulating function. The plate according to the invention can withstand a load of about 750 kg / m ² .

As shown in FIG. 2, the second layer has a honeycomb 20 having a structure in which a plurality of hexagonal pillar-shaped supports are formed therein, or a semi-cylindrical shape 41 or a square pillar shape shown in FIGS. 3 and 4. The support of 44 is made up of a void member such as a single plastic 40 connected to a plurality of supports. In addition, as shown in FIG. 5, the second layer may be a pore member in which two or more support plates in which rectangular supports 102 formed between two layers 101 and 103 are spaced apart from each other are overlapped.

The honeycomb, the short plastic and the support plate is preferably made of polypropylene or ABS. If polypropylene is used, the impact resistance, bending fatigue, heat resistance, etc. of the plate can be improved, and if ABS is used, the impact resistance and the bending strength are excellent, and thus the impact resistance can be improved.

The gap of the second layer may further include a filler 23 as shown in FIG. 6. Urethane foam or the like may be used as the filler, and when filling the voids with the filler, the impact resistance is improved and can withstand heavier loads. In addition, the shape deformation of the plate can be prevented. In addition, in order to maintain the light weight, the filler is preferably made of a foam material.

In FIG. 6, only the case of the honeycomb is illustrated. However, the filler may also be filled in the air gaps of the two or more support plates.

The shaping | molding method of each layer is not specifically limited, Any shaping | molding method generally performed by plastic shaping | molding processes, such as an extrusion molding method, a press molding method, a blow molding method, a calendering molding method, and an injection molding method, is possible.

Moreover, additives, such as a flame retardant additive, can be added within the range which does not deviate from the range of the objective of this invention.

Each layer can be either heat fused or adhesive with adhesive. However, by thermal fusion, it is possible to produce eco-friendly plates because no adhesive is used. In addition, the use cost of the adhesive and the time taken for the adhesive to dry can be saved, thereby reducing the production cost and time.

When bonding by heat fusion, each layer is pressed while heating. The heating may be performed by hot air heating, infrared heating, electron beam heating, contact heating using a heater, or the like, but is not limited thereto.

Pressing at the same time with heating or pressing after heating to bond each layer, the pressing time is not particularly limited, but in order to minimize the damage while maintaining a sufficient bonding force between each layer is preferably about 0.01 ~ 10 seconds.

As shown in FIG. 6, the nonwoven fabric may further include nonwoven fabrics 60 and 70 between the first and second layers, and between the second and third layers. When bonding three layers, there is an effect of increasing the adhesive force.

In addition, the combination of the first layer and the second layer, and the combination of the second layer and the third layer, as shown in FIG. 7, has one or more convex protrusions 23 formed on the second layer and the first layer or the third layer. Grooves 11 corresponding to the protrusions 23 may be formed on the surface that is coupled to the second layer of the protrusion 23. These protrusions and grooves make the bonding between layers stronger. In FIG. 5, only the case of the honeycomb is illustrated, but of course, the present invention is also applicable to other air gap members such as a danpra and a support layer.

In addition, the first layer and the third layer may be a multi-layered sheet consisting of ABS, ASA, polycarbonate is a multilayer. That is, it may be a multilayer sheet selected from ABS / ASA multilayer sheet, ABS / polycarbonate multilayer sheet, ASA / polycarbonate multilayer sheet. ABS has excellent impact strength and banding, polycarbonate has excellent surface and mechanical properties, and ASA has excellent impact strength banding as well as weather resistance. It is possible to provide a plate with better impact and mechanical properties.

In this case, the multilayer sheet may be coextruded, and the uneven surfaces 80 and 90 may be formed on the bonding surface of the ABS and the polycarbonate. As each layer is combined into the fitting structure by the uneven portion, the bonding force between the layers may be increased and may have a strong bonding force even by thermal fusion without an adhesive. Therefore, it is possible to remove environmental problems caused by the use of adhesives and adverse effects on the human body caused by the use of harmful substances can provide an environmentally friendly plate.

In addition, the protrusions and protrusions 81 and 91 are formed on the side surfaces of the protrusions 80 and 90 as shown in FIG. .

Since the general thickness of a conventionally commercially available plate is mainly 24 mm, the thickness of the first layer and the third layer is 2 to 5 mm and the thickness of the second layer is 15 to 25 mm in order to reduce the weight while maintaining compatibility with the plate used in the past. Is preferably. That is, the first layer and the third layer are not affected by the external environment, and the air gap is minimized to retain moisture, while the first layer and the third layer are heavier than the second layer, so that they can maintain durability and wear resistance. The thickness is sufficient, and the second layer is made thick so as to have impact resistance and light weight.

The total thickness of the plate can be easily adjusted to suit the structure to which it is applied. As a thickness control method, the press method or the method which passes between the rolls which controlled the clearance gap is generally used.

In addition, the surface of at least one layer of the first layer and the third layer can be embossed, and the embossing prevents slippage during use as well as during installation and transportation of the plate according to the present invention, thereby ensuring stability. Can be.

Plate according to the present invention is light, durable, flame retardant, impact resistance, weather resistance can be utilized as a drop protection plate and the like. By the way, these materials are often stacked in the open air before use, and because it is generally used outdoors than indoors, there is always the possibility of inflow of rainwater, moisture or foreign matter. However, when moisture or foreign matter is introduced into the plate, there is a problem in that the bonding force between layers is reduced due to the characteristics of the sheet composed of multilayers, or the distortion due to different strains between layers, or the quality and durability of the product are inferior. Therefore, in order to prevent such a problem in advance, it is preferable that a side shield member for shielding the side of the open plate is provided. In FIG. 10, the plate having the side shielding member 100 is illustrated, and the quality of the plate may be prevented due to the inflow of moisture and foreign substances into the plate by the side shielding member.

In addition, after the plate is wrapped with the side shielding member, the outer surface of the plate may be rounded by chamfering to prevent the operator from being injured from sharp edges or the like during use of the plate or during transportation.

FIG. 11 illustrates a plate further including an upper shielding member and a lower shielding member 200 for further shielding the upper and lower portions of the plate. Of course, as shown in FIG. 10, the side shield member alone has an effect of preventing moisture or foreign matter from entering the plate. However, when the upper shielding member and the lower shielding member are further provided, the shielding performance may be improved and the durability of the plate may be enhanced. In addition, at least one surface of the upper shielding member and the lower shielding member may be embossed to impart a non-slip role, thereby providing various functions.

The material of the upper shielding member and the lower shielding member is not particularly limited and may be PP or PVC.

In addition, as shown in FIG. 11, the upper shielding member, the lower shielding member, and the side shielding member may be separately formed, but may be connected to one as shown in FIG. 12.

In the case of a connection shield member having a structure in which an upper shield member, a lower shield member, and a side shield member are connected, in FIG. It is shown that, in order to facilitate the processing of the connection shield member and the coupling to the plate may be separated in this way.

As shown in FIG. 12, the connection shielding member is not limited to the method of separating the edge 300a and the edge 300b, and various divisions are possible according to the usage environment and the processing method. In addition, the connection shielding member according to the present invention can be manufactured and used in one piece without dividing into several pieces. However, when dividing into the edge and edge side, the shielding member processing method and the coupling to the plate is simple.

13 and 14 illustrate the fixing of the upper shielding member, the lower shielding member and the side shielding member to the plate by the fixing members 400, 400a and 400b.

In the present invention, the method of coupling each shielding member to the plate is not limited to that of the fixing member. However, when the plate is physically coupled by the fixing member, the plate and the fixing member may be separated by a simple method. There are advantages to it.

1, 7 and 8 show a plate according to the invention.

2 to 5 show the void members of the present invention.

Figure 6 shows that the filler is further filled in the void member.

9 illustrates the irregularities formed on the bonding surface of the multilayer sheet.

10 illustrates that the side shield member is further provided on the side of the plate.

11 and 12 show that the side and the upper and lower sides of the plate further provided with a side shielding member, an upper shielding member and a lower shielding member.

13 and 14 illustrate a plate further provided with a fixing member.

Claims (20)

A first layer made of at least one material selected from ABS, polycarbonate, and ASA; and A second layer disposed below the first layer and formed of a void member having a plurality of voids formed therein; And A third layer positioned below the second layer and made of at least one material selected from ABS, polycarbonate, and ASA; Plate comprising a. The method of claim 1, The pore member is a plate, characterized in that the honeycomb structure is a structure in which a plurality of hexagonal pillar-shaped support portion is formed therein. The method of claim 1, The pore member is a plate, characterized in that the short line is connected to a plurality of semi-cylindrical support portion formed with a gap therein. The method of claim 1, The pore member is a plate characterized in that the short line is connected to a plurality of rectangular pillar-shaped support portion formed with a gap therein The method of claim 1, The pore member is a plate, characterized in that the two or more support plates arranged with a plurality of rectangular shaped supports spaced apart from each other overlapping. The method of claim 1, The pore member is a plate, characterized in that made of a material selected from polypropylene and ABS. The method of claim 1, The thickness of the first layer and the third layer is 2 ~ 5mm, the thickness of the second layer is a plate, characterized in that 15 ~ 25mm. The method of claim 1, Plate is characterized in that the filler is further filled in the void of the void member. The method of claim 1, The bonding between the first layer and the second layer and the bonding between the second layer and the third layer are by heat fusion. The method of claim 1, The bonding between the first and second layers and the bonding between the second and third layers are by adhesive. The method of claim 1, And a nonwoven layer between the first layer and the second layer, and between the second layer and the third layer. The method of claim 1, The second layer has one or more protrusions formed on surfaces joining the first layer and the third layer, and grooves corresponding to the protrusions are formed on the joining surface joining the second layer of the first layer and the third layer. Plate formed. The method of claim 1, The first layer and the third layer is a plate, characterized in that the multilayer sheet selected from polycarbonate / ABS multilayer sheet, ABS / ASA multilayer sheet, ASA / polycarbonate multilayer sheet. The method of claim 13, Plates, characterized in that irregularities are formed on the coupling surface of the polycarbonate and ABS resin. The method of claim 14, Plates, characterized in that the projection is further formed on the side of the uneven. The method of claim 1, The surface of at least one layer of the first layer and the third layer is embossed. The method of claim 1, The plate further comprises a side shielding member for shielding the side of the plate. The method of claim 17, The plate further comprises an upper shielding member and a lower shielding member for shielding the upper and lower portions of the plate. The method of claim 18, The upper shielding member, the lower shielding member and the side shielding member is a plate, characterized in that the connection shielding member connected to one. The method according to any one of claims 17 to 19, And a fixing member for fixing the side shielding member, the upper shielding member, and the lower shielding member to the plate.

Images