KR100886654B1 - Heat insulation type heating pad - Google Patents

Abstract

A heat insulation type heating pad is provided to generate little bubbles and to secure visible adhesive quality by forming a squeeze-out shape which is a compression shape of adhesive regularly. A heat insulation type heating pad(100) comprises a foam layer(110) having elasticity, heat resistance and flexibility, a composite material layer(120) having heat transfer performance and heat resistance, a heater layer(130) heated by a temperature controller and laminated on the composite material layer, a timber sandwich panel layer(140) having strengthened timber sandwich structure and itself thermal insulation structure, layer fixing units(151,152,153) coated uniformly between the layers, a temperature sensor(160) interposed between the heater layer and the timber sandwich panel layer and a pigtailed connector electrically connected to the heater layer.

Description

Heat Insulation Heating Pads {HEAT INSULATION TYPE HEATING PAD}

The present invention relates to an insulating heating pad.

In general, ships such as LENG carriers are provided with insulation to maintain a temperature of minus 163 degrees within the cargo hold corresponding to the cargo (cargo).

Cargo holds may be constructed in a polygonal structure, and each corner shall have a frame (eg corner holder, etc.) shaped to correspond to the specification angle, specifications, etc. of the technical specification.

For example, the corners of the cargo hold are formed to have any one of standard angles of 90 degrees, 108 degrees, 135 degrees, and 162 degrees.

The cargo hold is constructed with the core material of the cargo hold system, a corrugation-shaped membrane corresponding to the primary barrier, a sheet (eg triplex or secondary gas barrier) and insulation for the secondary barrier.

At this time, while applying an adhesive such as epoxy glue (Epoxy Glue), by using a manual roller to the bottom surface of the sheet coated with the adhesive is temporarily bonded to the sheet attachment position.

The seat attachment position where the bottom of the sheet and the adhesive face is fine in the gap between the floor insulation, the flat joint or joint filler inserted to eliminate the gap, and the insulation around the gap. Due to protruding anchor strips, various rivets, stud bolts or recessed shapes or various holes, floor alignment or precision, etc. are not consistent or very low, leading to a field situation that is mostly unsmooth.

That is, the seat attachment position may have various surface shapes that are not smooth, such as various protruding portions, twisted or twisted portions, recessed portions, bent portions, protruding or concave portions, etc., depending on the situation of the site.

In order to tightly adhere and adhere the sheets and disperse the pressing force, a pressing plate is placed on the upper surface of the sheet attaching position. Furthermore, an air pressing board or an air matrix is placed on the pressing plate.

In addition, a plywood is placed on the air pressing board, and a pressing bar is disposed on an upper portion of the plywood, and ends of each of the pressing bars are temporarily fixed by using a coupling means such as an upper part of the heat insulating material and its associated anchor bolt.

In this state, when the adhesive is cured for 11 to 12 hours by supplying air to the air pressing board, the sheet is attached and fixed at the sheet attaching position.

Secondary gas barrier bonding method using a heating pad according to the prior art is disclosed in Korean Patent Application No. 10-2005-0104755 and can be seen through Figure 1, the primary gas barrier (not shown), the heat insulating material (1) and In the method of joining the secondary gas barrier (3) on the heat insulating material (1) in an LNG carrier or storage tank consisting of a secondary gas barrier (3), the adhesive (2) is applied to the surface of the heat insulating material (1) Steps; Sequentially stacking a secondary gas barrier (3), a release film (4), a cushion pad (5), a heating pad (6), and a rigid plate (7) on the adhesive (2); The heating pad 6 is used to heat the adhesive 2 to a temperature at which the best adhesive properties are achieved, and at the same time, using the elastic force of the cushion pad 5 and the rigidity of the rigid plate 7 to pressurize the device 8. Pressurizing the adhesive 2 between the furnace secondary gas barrier 3 and the heat insulator 1 to a uniform pressure, and then completely curing the adhesive 2 by maintaining a constant heating temperature for a curing time; In this case, the heating pad 6 is characterized in that the heating means is coated with a coating material.

However, the secondary gas barrier bonding method using the heating pad according to the prior art is complicated to install because the cushion pad 5, the heating pad 6 and the rigid plate 7, which are prepared separately, are sequentially stacked. There is a disadvantage in that reinstallation after use is inconvenient.

In addition, since the heating pad according to the prior art is used only as a simple device for applying heat, the heat is not transferred only to the cushion pad, the release film, the secondary gas barrier, and the downward side with the adhesive during the heating operation. The heat transfer performance is relatively decreased, the power consumption is relatively high, and the rigid plates or the air matrix are also heated to the device (eg, an air bag, an air matrix, an air pressing board, etc.), and thus, there is a risk of overheating.

In addition, when the rigid pad for heating pads according to the prior art is made of simple plywood, the weight is relatively heavy, easily broken, and pressure transmission to the adherend having a step due to lack of rigidity (for example, sheet or insulation) It has the disadvantage of not doing well.

When the rigid plate and the heating pad according to the prior art are used together, bubbles are generated in the adhesive or a squeeze-out shape, which is a crimp shape of the adhesive, may not be formed constantly.

In addition, when the rigid plate is made of any one material of a honeycomb panel or a laminate plate, the manufacturing cost is very high. In particular, the rigid plate of the honeycomb panel material is relatively very rigid, causing a problem that the pressure transfer to the stepped adherent is also poor.

Heating pad according to another conventional technology and a triplex attachment device using the same, as disclosed in the Republic of Korea Patent Application No. 10-2006-0036536 filed by the applicant, the pad body of the length and width used in the triplex attachment position It provides a heating pad using a stainless steel or nonferrous metal precision processing surface heating element having a.

Here, the heating pad is characterized in that the synthetic rubber layer, the planar heating layer, the elastic heat insulating layer, the integral flat plate layer are integrally bonded by a double-sided heat-resistant adhesive tape on the adherent contact basis.

The said synthetic rubber layer is laminated under the said planar heat generating layer, and has a heat resistant high elastic hydrophobic material.

The planar heating layer is laminated under the elastic insulating material layer, and includes a power bus and a heating wire in a groove formed by a laser processing or etching method, and has an integral plate shape, and has a material of stainless steel or nonferrous metal, and precisely processed. will be.

The elastic insulating material layer is laminated under the flat plate layer, and has a heat resistant and heat insulating material for blocking heat loss.

The unitary flat plate layer has the same length and width as the pad body, and is made of any one material selected from a reinforced plastic material, a wood plywood material, and a nonconductive composite material in which the reinforced plastic material and the wood plywood material are laminated.

However, the heating pad according to another conventional technique is focused on a function for improving adhesion by applying heat to the adhesive portion.

In order to check the adhesive strength of the adhesive part, it is necessary to evaluate the adhesive force by the fracture test.However, the fracture test cannot be performed at the actual work site. There is no choice but to.

Therefore, in order to prove that there is no problem in the adhesion of the bonded area, a smooth adhesive surface or a bubble-free squeeze-out shape should be formed. Conventional heating pads cannot obtain such visual adhesive quality. It has a disadvantage.

In view of the above drawbacks, in fact, when the bonding operation is actually performed with the existing heating pads, as the adhesive surface having a wave is formed instead of the smooth adhesive surface, or as bubbles are generated in the squeeze-out shape, repairs frequently occur. Problem occurred, and the causes of the problem were largely analyzed.

First, during the bonding work, the air pressing board is installed on the heating pad and pressurized by air. The synthetic rubber sheet of the existing heating pad has a uniform pressure over the entire surface because the adhesive for sheet having a low viscosity due to high temperature flows. Failure to deliver to the adherend (eg sheet or insulation) also results in poor pressure transfer.

Second, due to the high temperature, the planar heating layer itself is deformed into a wave shape, and the shape deformation affects the synthetic rubber sheet, and as a result, waves are formed on the adhesive surface.

In addition, the heating pad according to another conventional technology and the triplex attachment device using the same are not only difficult to connect the cable after pressurizing the air pressing board to the air pressing board because the connector is inserted into the pad, It is a disadvantage that the connection part is often broken.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to correspond to the cargo hold sheet attaching work by laminating the foam layer, composite material layer, heater layer, wood sandwich panel layer It is able to exhibit rigidity and flexibility to suppress the occurrence of wave on the adhesive surface and to ensure visible adhesion quality by forming a squeeze-out shape, which is a very small bubble and a crimping shape of the adhesive. It provides an insulating heating pad.

In addition, another object of the present invention in constructing a wood sandwich panel layer, while having a reinforced wood sandwich structure by interposing a wooden skeleton between the plywood, the interior of the filling in the space between the plywood in the interior of the skeleton Accordingly, the present invention is to provide an insulating heating pad that can satisfy both the rigidity and flexibility required for sheet attachment, and can realize both the durability of the wood sandwich panel layer and the improvement of sheet adhesion quality by realizing a self-insulating structure.

Objects of the present invention as described above, as described in detail below, in an insulating heating pad that is used in electrical connection to the temperature controller for attaching the sheet, is used in contact with the sheet and the elasticity, heat resistance and flexibility Foam layer having; A composite material layer laminated on the foam layer and having heat transfer performance, heat resistance, and rigidity; A heater layer laminated on the composite material layer and heated by the temperature controller; It is achieved by an insulating heating pad, which is laminated on the heater layer and includes a wood sandwich panel layer having a reinforced wood sandwich structure and a self-insulating structure by embedding a skeleton and a filler made of wood between plywood.

In addition, according to the present invention, a layer fixing part uniformly applied between each layer to coalesce the foam layer, the composite material layer, the heater layer, wood sandwich panel layer; A temperature sensor interposed between the heater layer and the wood sandwich panel layer; Preferably, the apparatus further includes a pigtail connector electrically connected to the heater layer.

Insulating heating pad according to the present invention has a wood sandwich panel layer having a self-insulating structure and a wooden sandwich structure, can satisfy both the rigidity and flexibility required for sheet attachment, and can innovatively improve both durability and adhesion quality. There is an advantage.

In addition, the heat insulating heating pad of the present invention, the wood sandwich panel layer is laminated on the heater layer, the composite material layer is laminated on the lower portion of the heater layer, and the structural feature of laminating the foam layer on the lower portion of the composite material layer As it provides, by minimizing the influence on the wave of the heater layer that can occur in accordance with the high temperature operating environment there is an advantage that can block the wave of the heater layer is not transmitted to the adhesive surface.

In addition, the heat insulating heating pad of the present invention can exhibit the rigidity and flexibility required for sheet attachment by laminating the foam layer, the composite material layer, the heater layer, and the wood sandwich panel layer in order, and easily transmit pressure to the adherend. Therefore, it is possible to form a uniform squeeze-out shape and to minimize the generation of bubbles, as a result it is possible to confirm the visible improvement in adhesion, there is an advantage that can innovatively improve the quality of the adhesive surface.

In addition, the heat insulating heating pad of the present invention has an advantage of increasing convenience in operation while preventing the damage of the existing connector by having a pigtail type connector.

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

2 is a cross-sectional view of a heat insulating heating pad according to a preferred embodiment of the present invention, Figure 3 is an exploded perspective view of the wood sandwich panel layer of the embodiment shown in FIG. In addition, Figure 4 is a perspective view showing a pigtail type connector of the embodiment shown in Figure 2, Figure 5 is an exploded perspective view for explaining an application example of the wood sandwich panel layer shown in FIG.

First, as shown in Figure 2, the embodiment 100 corresponding to the heat insulating heating pad according to the present invention is a secondary barrier of the cargo hold, that is, a triplex or the like corresponding to the secondary gas barrier, such as a sheet It is used for heating the equivalents for a long time.

Embodiment 100 for this purpose is to form a predetermined length and width equal to all the layers for sheet attachment, foam layer 110, composite material layer 120, heater layer 130, wood sandwich panel layer The layers 140 are laminated in order, and are integrated through the layer fixing parts 151, 152, and 153 corresponding to the heat-resistant adhesive or the double-sided heat-resistant adhesive tape uniformly applied between the respective layers.

The temperature sensor 160 is preferably interposed between the heater layer 130 and the wood sandwich panel layer 140.

The temperature sensor 160 is electrically connected to an external heating pad dedicated temperature controller through a sensor line so as to transmit a temperature sensing signal so that the temperature controller can control the operation at a set temperature.

The foam layer 110 is used in contact with the sheet, and is made of a material or material having elasticity, heat resistance, and flexibility. For example, the foam layer 110 may have any one material selected from polyurethane foam, EPDM (Ethylene Propylene Diene Monomer) foam, and EVA (Ethylene Vinyl Acetate) foam, or may be formed of the material.

The material properties of the foam layer 110, in spite of the flow of the adhesive for the sheet lowered in viscosity due to the high temperature and the step of the adherend surface, induce uniform pressure to be applied to the sheet, thereby improving the adhesion surface quality and It helps to improve adhesion.

The composite material layer 120 has a plate shape laminated over the entire area of the foam layer 110 with the layer fixing part 151 interposed therebetween, and is made of a material or material having very good heat transfer performance and having heat resistance and rigidity. It is. For example, the composite layer 120 preferably has a composite material or a thermally conductive plastic material containing a polymer fat.

For example, a composite material containing a polymer fat means that the polymer and the ceramic are mixed to be molded to satisfy heat transfer performance, heat resistance, and stiffness required for sheet adhesion.The thermally conductive plastic is a mixture of a thermally conductive filler and a plastic resin. Means made. For example, thermally conductive plastics may be formed using engineering plastics and thermal conductive agents (eg, graphite), strength enhancers (eg, ceramics), and molding agents. The engineering plastic used here is preferably any one of polyamide (PA), polycarbonate (PC), polyimide (PI), polyamideimide (PAI), polyetheretherketone (PEEK).

The composite material layer 120 uniformly distributes pressure and efficiently heats while supporting or protecting the foam layer 110 while blocking a wave generated in the heater layer 130 between the foam layer 110 and the heater layer 130. It is in charge of delivering.

The heater layer 130 corresponds to a planar heating element stacked over the entire area of the composite layer 120 with the layer fixing part 152 interposed therebetween. For example, the heater layer 130 is preferably any one of stainless steel or nonferrous metal precision processing surface heating element, carbon fiber fabric heating element, conductive ink heating element.

The heater layer 130 is preferably formed to form a heating wire in a plurality of cells (cell) having a pre-designed unit area and to supply the heating power using a parallel power supply method.

As shown in FIG. 3, the wood sandwich panel layer 140 is manufactured to be integrated to have a reinforced wood sandwich structure by interposing a wooden frame 143 between upper and lower plywoods 141 and 144. The filler 142 is built into the space between the upper plywoods 141 and 144 under the frame 143.

Filler 142 plays a role of increasing the compression resistance, the skeleton 143 plays a role of reinforcing the structural rigidity, resulting in the wood sandwich panel layer 140 has a relatively heavy weight compared to the existing wood veneer material It is lightweight and can meet all of the rigidity and flexibility required for sheet attachment.

Filler 142 is a heat insulating material and a strong compressive resistance, it is preferable that the inside of the skeleton 143 is manufactured to have a shape that can be inserted into the space between the upper plates (141, 144). For example, the filler 142 is preferably formed of any one of glass fiber reinforced polyurethane foam, Styrofoam (EPS: Expanded Poly-Styrene), MDF (Medium Density Fiberboard), and core plywood.

If the thickness of each of the lower and upper plywoods 141 and 144 is 4.5 mm or more, the space between the lower and upper plywoods 141 and 144 may be filled with air instead of the filler 142. Can be.

On the other hand, it is preferable that the surface coating film 145 is further formed on the surfaces of the lower and upper plywoods 141 and 144 to provide a smooth surface.

In addition, the skeleton 143 is coupled to the width direction of the wood sandwich panel layer 140 at both ends of the both side reinforcement 146 and the end of each of the two side reinforcement 146 disposed on both sides of the wood sandwich panel layer 140. End connector 147 is provided.

In addition, the skeleton 143 is disposed between the both side reinforcing rod 146 and the end connector 147 while maintaining a spaced interval along the longitudinal direction of the wood sandwich panel layer 140 and the wood sandwich panel layer 140 It has a plurality of intermediate connecting rods 148, respectively coupled in the width direction.

In addition, the skeleton 143 is a plurality of parallel or serially arranged to interconnect the connecting rods 147, 148 between the end connecting rod 147 and the intermediate connecting rod 148 or between the intermediate connecting rod 148, respectively. It has two bar-shaped inner reinforcement 149.

As the filler 142 is filled in the interior space of the wood sandwich panel layer 140 except for the internal reinforcing bar 149, the wood sandwich panel layer 140 forms a self-insulating structure. Due to this, the wood sandwich panel layer 140 enables the present invention to innovatively improve both durability and adhesion quality.

As shown in FIG. 4, this embodiment 100 has a pigtail connector 170 for connection with a temperature controller side cable (not shown) including a power line and a sensor line.

The pigtail connector 170 is electrically connected to the heater layer 130.

Pigtail type connector 170 is a socket portion 171 for connecting to the temperature controller side cable, an extension cord portion 172 electrically connected to the socket portion 171 extending toward the wood sandwich panel layer 140. It is preferable that the cord reinforcing part 173 is formed at the end of the extension cord part 172 and mounted to the side of the wood sandwich panel layer 140.

In addition, the wood sandwich panel layer 140 has a hole processing so that the sensor line and power line of the extension cord portion 172 can be extended from the inside of the cord reinforcement portion 173 to the connection terminal of the heater layer 130. It is preferable that it is done.

In addition, as shown in Figure 5, the wood sandwich panel layer (140a) according to the application is to produce a skeleton 143a located between the lower, upper plywood (141, 144), the inside of the skeleton 143a It is preferable that the internal reinforcing bar 148a having the shape of the door grate is incorporated therein.

In this case, the filler 142a also has a block shape to be inserted between the internal reinforcing bars 148a of the door grate shape.

The embodiment 100 shown in FIG. 4 configured as described above is installed on the sheet to which the attachment operation is to be performed.

On this embodiment 100, an air pressing board or the like is installed.

Then, the outer fixing portion is placed on the air pressing board, the installation angle is disposed so as to press the outer fixing portion, each installation angle is coupled using the mounting means, such as anchor base and anchor bolt pre-installed on the adherend.

In this state, when the air is supplied to the air pressing board, the adhesive is cured by the embodiment 100 for a predetermined time, and the pressure is applied to the positive pressure of the air pressing board for a predetermined time, the sheet is attached to the seating work area. Is attached to.

During this process, the operator can freely electrically connect or short-circuit the cable of the temperature controller using the pigtail type connector 170, and in particular, the air in which the pigtail type connector 170 is expanded even if the air pressing board is expanded. Since it is drawn outside the pressing board, it is possible to increase the convenience of use.

1 is a conceptual diagram of a secondary gas barrier bonding method using a heating pad according to the prior art.

2 is a cross-sectional view of a heat insulating heating pad according to a preferred embodiment of the present invention.

Figure 3 is an exploded perspective view of the wood sandwich panel layer of the embodiment shown in FIG.

4 is a perspective view showing the pigtail type connector of the embodiment shown in FIG.

5 is an exploded perspective view for explaining an application example of the wood sandwich panel layer shown in FIG.

                Description of the main parts of the drawing

100 Example 110 Foam Layer

120: composite material layer 130: heater layer

140: wood sandwich panel layer 151, 152, 153: floor fixing

160: temperature sensor 170: pigtail type connector

Claims (7)

Insulating heating pads that are electrically connected to the temperature controller for seat attachment, A foam layer used to abut the sheet and having elasticity, heat resistance, and flexibility; A composite material layer laminated on the foam layer and having heat transfer performance, heat resistance, and rigidity; A heater layer laminated on the composite material layer and heated by the temperature controller; A wood sandwich panel layer laminated on the heater layer and having a reinforced wood sandwich structure and a self-insulating structure by embedding a skeleton and a filler made of wood between plywood; Insulating heating pad, characterized in that it comprises a. The method of claim 1, A layer fixing part uniformly applied between each layer to coalesce the foam layer, the composite material layer, the heater layer, and the wood sandwich panel layer; A temperature sensor interposed between the heater layer and the wood sandwich panel layer; Pigtail-type connector electrically connected to the heater layer; Insulating heating pad further comprising. The method according to claim 1 or 2, The foam layer, Insulation heating pad, characterized in that formed of any one selected from polyurethane foam, EPDM (Ethylene Propylene Diene Monomer) foam, EVA (Ethylene Vinyl Acetate) foam. The method according to claim 1 or 2, The composite material layer, Insulating heating pad, characterized in that formed of a composite material or a thermally conductive plastic material containing a polymer fat. The method according to claim 1 or 2, The heater layer, Insulation heating pad, characterized in that formed of any one of stainless steel or nonferrous metal precision processing planar heating element, carbon fiber fabric heating element, conductive ink heating element. The method according to claim 1 or 2, The filler, Insulating heating pad, characterized in that formed of any one of glass fiber reinforced polyurethane foam, styrofoam (EPS: Expanded Poly-Styrene), MDF (Medium Density Fiberboard), core plywood. The method according to claim 1 or 2, The wood sandwich panel layer, In preparing a skeleton located between the upper and lower plywood, a heat insulating heating pad, characterized in that a plurality of bar-shaped or grate-shaped inner reinforcing bars are built into the skeleton.

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