KR20110080842A - Upper sheet and electric mattress using the same, manufacturing method of the same - Google Patents

Abstract

PURPOSE: An upper sheet for an electric mattress and a manufacturing method thereof are provided to prevent the form of an electric heating wire from being exposed to the surface of the upper sheet. CONSTITUTION: A manufacturing method of an upper sheet for an electric mattress is constituted as follows. A cushioning layer(110) is provided. A cushion finishing layer(120) is laminated on the top of the cushioning layer and is jointed to the cushioning layer. The fused liquid is applied to the cushion finishing layer in a film type. Cloth is forming the upper surface layer is jointed. The fused liquid is dried in the state that the cloth is folded.

Description

Upper sheet for electric sheet and electric sheet using same, manufacturing method thereof {Upper sheet and electric mattress using the same, manufacturing method of the same}

The present invention relates to an electric sheet, and more particularly, to a top sheet for an electric sheet, an electric sheet using the same, and a manufacturing method thereof.

Electric blankets are used for warming floors in a short period of time. That is, it is used to generate heat by using electricity to spread on a living room or bed. Such electric blankets use electricity, which is relatively inexpensive energy, compared to existing heating appliances such as petroleum, and thus the demand is increasing rapidly as oil prices soar.

1 is a cross-sectional view showing a conventional electric field plate.

The conventional electric field plate includes a heat transfer unit 10 for generating heat using electric energy, and an upper sheet 20 and a lower sheet 30 positioned up and down with the heat transfer unit 10 interposed therebetween.

The heat transfer unit 10 is usually used a lot of electric heating wire that generates heat by electricity, but recently a hot water pipe is also used. Most of the top sheet 20 is a long sheet of paper called a common monolium, the lower sheet 30 is a non-woven fabric is used a lot.

By the way, the longboard called monolium used as the top sheet 20 is formed using PVC as a main material. That is, the longboard made of the conventional top sheet 20 is a base layer foamed with PVC material containing various chemical components for the cushion, the upper surface layer of the PVC material on the surface of the base layer, and several surface coating layers on the upper surface of the upper surface layer Is formed. Such a longboard is hardened at a low temperature, and has a disadvantage in that it is easily broken even in a weak impact. Therefore, a problem has been pointed out that it is difficult to use an electric field plate for a long time. In addition, it is pointed out that harmful substances are emitted and harmful to the human body and the environment.

In addition, since the electric heating wire of the heating plate 10 is in direct contact with the upper sheet 20, the electric heating wire of the conventional electric plate 10 is exposed to the surface of the upper sheet 20 when used for a long period of time. There is a drawback to exhausting the human body because of the bumpy electric fields.

In addition, since the fixing of the electric heating wire is difficult, except that the upper sheet 20 and the lower sheet 30 are sewn at the edges, the upper sheet 20 and the lower sheet 30 when the electric sheet is folded or rolled up for storage. In some cases, the position of the electric heating wire may change or the electric heating wire may be broken.

The present invention has been made to solve the above problems, it is not harmful to the environment at all, the object of the present invention is to provide a top sheet for an electric sheet and an electric sheet using the same, a manufacturing method thereof.

Another object of the present invention is to provide a top sheet for an electric sheet and an electric sheet using the same, a method of manufacturing the same, which does not easily cure even in a low temperature environment and prevents the form of the electric heating wire from being exposed to the surface of the top sheet even after long time use. have.

Still another object of the present invention is to provide a top sheet for an electric sheet, an electric sheet using the same, and a method of manufacturing the same, wherein the electric heating wire can be stably positioned between the top sheet and the bottom sheet.

The present invention to solve the above problems is a cushion layer formed of a nonwoven fabric; A coating layer formed on the cushion layer; A cushion finishing layer laminated on the cushion layer and formed of a nonwoven fabric having a denier smaller than the cushion layer on an upper surface thereof; It proposes a top sheet for electric sheet, characterized in that it comprises a.

The cushion layer may be characterized in that the arrangement direction of the individual short fibers of the nonwoven fabric is superior to the vertical direction compared to the horizontal direction.

The cushion layer and the cushion finishing layer may be bonded to each other by needle punching.

The thickness of the cushion finishing layer may be characterized in that thinner than the thickness of the cushion layer.

The coating layer may be formed of a polyethylene terephthalate (PET) material.

It may further include an upper surface layer of the fabric bonded to the top of the coating layer by the bonding force of the coating layer to form the surface of the electric plate.

In addition, to solve the above problems, the present invention is a lower sheet; And a heat transfer unit disposed on the lower sheet. It proposes an electric sheet characterized in that it comprises the above-mentioned top sheet for electric sheet laminated on top of the heat transfer unit.

The lower sheet may be formed of a nonwoven fabric.

The lower sheet may be characterized in that the arrangement direction of the individual short fibers of the nonwoven fabric is superior to the vertical direction compared to the horizontal direction.

The lower surface of the lower sheet may be completely coated with a foamed resin.

The heat transfer part may include an electric heating wire and the first and second cover layers stacked and bonded to each other with the electric heating wire interposed therebetween.

The first and second cover layers may be formed of nonwoven fabrics, respectively.

In another aspect, the present invention to supply the cushion layer to solve the above problems; Supplying the cushion finishing layer and laminating and bonding the upper portion of the cushion layer; After the bonding, coating a molten liquid forming the coating layer on the upper surface of the cushion finishing layer in a film shape; Bonding the fabric forming the upper surface layer before drying the molten liquid phase; After the fabric bonding, the step of performing a drying process so that the molten liquid is dried in the bonded state of the fabric; proposes a method of manufacturing a top sheet for electric sheet comprising a.

The mutually laminated cushion layer and cushion finishing layer may be bonded by needle punching.

When the fabric is bonded, the fabric may be characterized by pressing with a roller while placing on the molten liquid.

In addition, the present invention to solve the above problems is the step of manufacturing the upper sheet and the heat transfer portion, respectively, and manufacturing the lower sheet using a nonwoven fabric as a main material; It proposes a method for manufacturing an electric sheet comprising a; the step of forming the electric sheet by bonding the top sheet and the heat transfer portion, and the lower sheet, respectively manufactured by a laminating method.

The cushion layer and the cushion finishing layer of the upper sheet may be characterized in that bonded by mutual needle punching.

Spreading the first cover layer by the heat transfer unit; Passing a plurality of guide pins through the first cover layer to guide the wiring of the electric heating wire; Wiring the electric heating wire on the first cover layer along the plurality of guide pins; And bonding the first and second cover layers with the electric heating wire therebetween.

In addition, the present invention to solve the above problems includes a cushion layer formed of a cross-linking foam resin, and a coating layer formed on the cushion layer, the cushion layer is characterized in that a plurality of holes penetrated in the vertical direction To present a top sheet for electric sheet.

The cushion finishing layer is located between the cushion layer and the coating layer, and further includes a cushion finishing layer having a thickness that is relatively thinner than the cushion layer, wherein the cushion finishing layer has a structure that is less dense than the cushion layer and does not have holes formed in the vertical direction. It may be characterized in that the cross-linked foamed resin or non-woven fabric formed.

The manufacturing method of the electric plate including the above-described top sheet for electric plate may be made as follows. That is, the upper sheet includes a process of joining a cushion lower layer formed of a nonwoven fabric to the lower surface of the cushion layer by needle punching, and the lower sheet is manufactured using a nonwoven fabric as a main material, and the cushion lower layer and the lower sheet of the upper sheet. Can be joined by a laminating method. Alternatively, the upper sheet includes a process of joining a cushion lower layer formed of a nonwoven fabric to a lower surface of the cushion layer by needle punching, wherein the heat transfer part is manufactured so that an electric heating wire is wired between the first and second cover layers formed of a nonwoven fabric. The lower cover of the upper sheet and the first cover layer of the heat transfer part may be bonded by a laminating method.

As described above, according to the present invention, various effects including the following can be expected. However, the present invention does not necessarily achieve the following effects.

First, the topsheet is not harmful to the environment at all and there is no fear of curing. In addition, even after prolonged use, the shape of the electric heating wire does not appear on the surface of the top sheet. In addition, the electric heating wire can be stably positioned between the upper sheet and the lower sheet.

In addition, the upper sheet is a cushion finish layer formed between the cushion layer and the coating layer is placed so that the coating layer can be smoothly coated, and thus the upper surface can be formed smoothly, the quality can be improved.

In addition, as the cushion layer is formed of a denier, that is, a nonwoven fabric having a large fiber thickness, or a crosslinked foamed resin in which a plurality of holes are formed, heat generated in the heat transfer part is more easily formed through the pores of the cushion layer. Can be delivered to the surface.

In addition, the lower sheet is formed of a nonwoven fabric as a main material, and the foamed resin is applied to the lower surface, thereby minimizing heat loss to the lower side, and preventing the electric sheet from slipping on the floor, and the thermal insulation effect is improved. Not only is it excellent, the volume is increased to increase the feeling of cushioning.

In addition, since the heating element is configured such that the electric heating wire is positioned between the first and second cover layers, the first and second cover layers of the heating portion are respectively bonded to the upper sheet and the lower sheet, and thus, the electric heating wire needs to be concerned about burnout. There is no. In addition, since the heat transfer unit is composed of the electric heating wire and the first and second cover layers, the heat transfer unit can be mass-produced by the apparatus.

In addition, since the upper sheet, the lower sheet, and the heat transfer portion can be separately prepared and then joined together, the division of labor can be performed and productivity can be increased.

1 is a cross-sectional view showing a conventional electric field plate.
Figure 2 is a cross-sectional view showing a cross-section of the electric sheet to which the top sheet for electric sheet according to the first embodiment of the present invention.
3 is an enlarged view of the cushion layer of FIG.
4 is a cross-sectional view showing a cross section of an electric field plate according to a second embodiment of the present invention.
5 is a view illustrating the top sheet, the heat transfer unit, and the bottom sheet of FIG. 4 separately;
6 is a plan view illustrating a wiring process of an electric heating wire of the heating unit of FIG. 4.
7 is a cross-sectional view taken along line AA of FIG. 6.
FIG. 8 is a view corresponding to FIG. 7, illustrating a bonding process of the first and second cover layers and the electric heating wire after the electric heating wire is wired.
9 is a conceptual diagram of a device for manufacturing a top sheet for an electric sheet of an embodiment of the present invention.
10 is a conceptual diagram illustrating a modification of the air generating device of FIG.
FIG. 11 is an enlarged view of the seat of the air generating device portion of FIG. 9; FIG.
12 is a cross-sectional view showing a cross section of the upper sheet for electric plate according to the third embodiment of the present invention.
FIG. 13 is a plan view of the cushion layer of FIG. 12. FIG.

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

In the following description of the present invention, a detailed description of known functions and configurations will be omitted so as not to obscure the gist of the present invention.

2 is a cross-sectional view showing a cross section of an electric sheet to which the top sheet for electric sheet according to the first embodiment of the present invention is applied.

The electric sheet according to the first embodiment of the present invention, the heating sheet 200 for generating heat using electrical energy, the upper sheet 100 and the lower sheet 300 positioned up and down between the heating portion 200 between. It includes.

The top sheet 100 is a cushion layer 110 formed of a nonwoven fabric, a coating layer 130 formed on the cushion layer 110 and the cushion layer 110 is laminated on the upper surface of the coating layer 130 is smooth. It is characterized in that it comprises a cushion finishing layer 120 formed of a non-woven fabric having a denier, that is, the fiber thickness is smaller than the cushion layer 110 so as to be formed.

That is, the topsheet 100 includes a cushion layer 110 formed of a thick thickness containing a lot of air with a small material (ie, light weight) by the nonwoven fabric.

The cushion layer 110 of the upper sheet 100 may perform the same role as the conventional foamed base layer, and unlike the conventional base layer, since there is no plurality of short fibers, there is no fear of curing. Therefore, there is an advantage that there is no fear of breaking of the top sheet 100 by curing in a long-term use or low temperature environment. In addition, since the upper sheet 100 is formed of a nonwoven fabric as a main material, there is no need to worry about the discharge of harmful substances. In addition, since the heat-transfer part 200 (ie, the electric heating wire 210 or the hot water pipe, etc.) does not directly contact the coating layer 130 due to the thick thickness of the cushion layer 110, the surface of the coating layer 130 may be used even for long-term use. The shape of the electric heating wire 210 can be prevented from being revealed.

In addition, since there is a cushion finishing layer 120 between the cushion layer 110 and the coating layer 130, the cushion layer 110 may be formed of a nonwoven fabric having a large denier (eg, about 40 denier), and the coating layer 130. ) May be formed smoothly.

That is, the coating layer 130 is a molten liquid film is placed on the upper surface of the cushion finishing layer 120 in the form of a film, the cushion finishing layer 120 is a non-woven fabric having a considerably denier than the cushion layer 110 (for example, 3 to 6 denier), the molten liquid forming the coating layer 130 when the coating layer 130 is formed may be unevenly coated on the upper surface of the cushion finish layer 120. Therefore, the surface of the top sheet 100 may be formed more smoothly.

In addition, the cushion layer 110 may be formed to have a structure in which a sufficient amount of air may be contained regardless of the coating layer 130. Therefore, the cushioning of the top sheet 100 can be improved. In addition, since the pores of the cushion layer 110 are relatively large, heat is quickly transferred because the heat of the heat transfer part 200 may be directly transferred to the surface of the upper sheet 100 through the pores of the cushion layer 110. Can be.

In addition, since the cushion finishing layer 120 is formed of a nonwoven fabric in the same manner as the cushion layer 110, the cushion finishing layer 120 may further have the following advantages. That is, there is no need to worry about curing of the cushion finishing layer 120 and discharge of harmful substances. In addition, the cushion closing layer 120 may also provide a cushioning feeling together with the cushioning layer 110. In addition, the bonding of the cushion finishing layer 120 and the cushion layer 110 can be made more easily and firmly.

The cushion finishing layer 120 is preferably formed as a film with a considerably thinner thickness than the thickness of the cushion layer 110 for heat transfer and a feeling of cushioning of the heat transfer part 200.

In addition, the cushion layer 110 may be formed in the vertical direction of the arrangement direction of the individual short fibers of the nonwoven fabric is superior to the horizontal direction. That is, as shown in FIG. 3, it means that the angle? Of the short fibers 111 of the nonwoven fabric of the cushion layer 110 and the virtual horizontal line 112 is 45 degrees or more. Since the nonwoven fabric is formed of entangled single fibers, not all single fibers can be arranged in the vertical direction as described above, but it is preferable that a large number of short fibers are arranged in the vertical direction.

As the cushion layer 110 is predominantly formed in the vertical direction, the cushion layer 110 may be formed to a thicker thickness containing more air with less material (ie, lighter weight).

The coating layer 130 may be formed of a harmless PET (polyethylen terephthalate; PET) material.

Meanwhile, the upper sheet 100 may further include an upper surface layer 140 formed on the coating layer 130 to form an upper surface of the electric plate.

The upper surface layer 140 may be formed of various materials, but in particular, may be easily bonded to the coating layer 130 and may be made of a harmless fabric. If the upper surface layer 140 is made of fabric, there is no need to worry about the discharge of harmful substances, etc., various designs can be represented by the fabric.

Alternatively, although not shown, the top sheet 100 may be configured such that the coating layer 130 is just an upper surface of the electric field plate. In this case, a pattern may be printed on the upper surface of the cushion finishing layer 120. For example, before the coating layer 130 is formed on the upper surface of the cushion finishing layer 120, the transfer sheet having a pattern printed on the upper surface of the cushion finishing layer 120 is placed and heated, and the upper surface of the cushion finishing layer 120 is applied. Patterns can be printed on In addition, the coating layer 130 after the coating of the molten liquid constituting the coating layer 130 after the process of being pressed by a roller having a concave-convex formation before drying, the concave-convex may be formed on the surface. Unevenness of the coating layer 130 may give a texture when used. The user may be prevented from slipping.

This top sheet 100 may be manufactured as follows.

That is, supplying the cushion layer 110; And, by supplying a cushion finishing layer 120 laminated on top of the cushion layer 110 and bonded; After the bonding, coating the molten liquid on the upper surface of the cushion finishing layer 120 in the form of a film; Bonding the fabric forming the upper surface layer 140 before drying the molten liquid; After fabric bonding, a drying process may be performed to dry the molten liquid in the bonded state of the fabric, thereby forming the coating layer 130 by the molten liquid in the bonded state of the fabric.

Here, the upper surface layer 140 formed by the fabric by the coating layer 130 may be smoothly formed unevenly, the fabric forming the upper surface layer 140 is bonded before the molten liquid constituting the coating layer 130 is dried. By doing so, the coating layer 130 may also serve as a bonding role of the upper surface layer 140, and the manufacturing process may proceed quickly because it does not have to prepare a process for bonding the fabric separately. At this time, the fabric forming the upper surface layer 140 may be pressed by the roller while being positioned on the molten liquid to be more firmly bonded.

In addition, the cushion layer and the cushion finishing layer laminated on each other may be bonded by needle punching, among other various bonding methods.

Therefore, since the cushion finishing layer 120 and the cushion layer 110 are physically bonded, the bonding is firm, and there is no damage caused by heat of the nonwoven fabric or discharge of harmful substances by chemicals. In addition, the heat of the heat transfer part 200 may be transferred to the surface of the upper sheet 100 more quickly through the air gap of the needle punching part.

For reference, needle punching is performed by punching the cushioning layer 120 and the cushioning layer 110 in which the needles are stacked, and the fibers of the cushioning closing layer 120 and the cushioning layer 110 are physically entangled with each other. Cushion layer 110 is a bonding method that can be bonded to one.

Meanwhile, the lower sheet 300 may also be formed of the nonwoven fabric 310 as a main material, and may be completely coated with the foamed resin 320 on the lower surface thereof. The nonwoven fabric 310 of the lower sheet 300 is also formed in a vertical direction in which the arrangement direction of the individual short fibers is superior to the horizontal direction. This serves to increase the feeling of cushioning.

The lower surface of the lower sheet 300 is coated with a foamed resin 320, and after preliminary drying, by using a forming roll formed with unevenness, to form the unevenness on the surface, it is finally dried and coated. As described above, by forming the lower portion of the foamed resin 320, it is possible not only to minimize the loss of heat to the lower portion, but also to prevent the electric plate from slipping on the floor. That is, since the foamed resin 320 contains bubbles therein, it is not only excellent in adiabatic effect, but also increases in volume to increase a feeling of cushioning.

Bonding of the upper sheet 100 and the lower sheet 300 may be performed by a laminating method. That is, after a slight heat is applied to the lower surface of the lower sheet 300 or the upper sheet 100 facing each other, the electric heating wire 210 is sandwiched and bonded to each other. Next, close the corners. As such, the present invention has the advantage that the top sheet 100 and the bottom sheet 300 can be combined in a very simple manner. This is an advantage that can be obtained because the non-woven fabric with the electric heating wire 210 therebetween.

Therefore, there is an advantage that the electric heating wire 210 may be in a certain position even when folding or rolling the electric field plate for storage. Since the non-woven fabric in which the short fibers are formed vertically surrounds the electric heating wire 210, the electric heating wire 210 may be more effectively blocked from moving.

4 to 8 relate to an electric field plate according to a second embodiment of the present invention.

The heat transfer part 200 of the electric plate according to the second embodiment of the present invention basically includes an electric heating wire 210, and further, the first and second cover layers stacked with the electric heating wire 210 therebetween ( 220, 230 may be further included. The first and second cover layers 220 and 230 may be formed of various materials. When the first and second cover layers 220 and 230 are formed of a nonwoven fabric, the first and second cover layers 220 and 230 may be firmly joined with the electric heating wire 210 interposed therebetween, and the heat generated from the electric heating wire 210 may be used. This is well communicated and can increase the overall cushioning of the electric blanket.

In particular, the electric sheet is configured as described above the upper sheet 100 and the lower sheet 300, as well as the heat transfer unit 200 as the electric heating wire 210 and the first and second cover layers (220,230) According to the configuration, after the upper sheet 100 and the heat transfer unit 200, the lower sheet 300 is produced separately, respectively, the upper sheet 100 and the heat transfer unit 200, the lower sheet 300 prepared separately ) Can be combined together. As a result, the division of labor of the electric field plate can be manufactured, thereby increasing productivity.

In addition, when the electric heating wire 210 is positioned between the first and second cover layers 220 and 230, when laminating the first and second cover layers 220 and 230 with the upper sheet 100 and the lower sheet 300, There is no need to worry about burnout of the electric heating wire 210 and the whole area can be bonded to each other, which is more advantageous in terms of workability and bonding properties.

In addition, if the heat transfer unit 200 can be manufactured separately, the heat transfer unit 200 may be automatically manufactured by the apparatus 500 as shown in FIGS. 6 to 8, and thus mass production may be possible. Can be.

 That is, as shown in FIGS. 6 and 7, after spreading the first cover layer 220 on the device 500 on which the plurality of guide pins 510 protrudes, the device 500 is disposed on the first cover layer 220. The plurality of guide pins 510 penetrate the first cover layer 220 by moving upward. In this case, the plurality of guide pins 510 are for guiding the wiring of the electric heating wire 210 to wire the electric heating wire 210 on the first cover layer 220.

When the first cover layer 220 is prepared as described above, the electric heating wire 210 is wired on the first cover layer 220 along the plurality of guide pins 510.

After wiring the electric heating wire 210, as shown in FIG. 8, the apparatus 500 is moved downward so that the plurality of guide pins 510 are removed from the first cover layer 220, and the second cover layer 230 is disposed. Is laminated on the first cover layer 220 and bonded.

In this case, the first cover layer 220 and the second cover layer 230 may be bonded to each other in a variety of ways, preferably formed of a nonwoven fabric may be bonded by a laminating method.

On the other hand, the electric field plate configured as described above may be manufactured as follows.

First, as described above, the upper sheet 100, the heat transfer part 200, and the lower sheet 300 are manufactured by dividing each.

In addition, it is preferable to bond the upper sheet 100, the heat transfer part 200, and the lower sheet 300, which are manufactured separately, to each other by a laminating method among various bonding methods. That is, since the upper surface of the sheet 100, the heat transfer portion 200, the lower surface of the bonding between the lower sheet 300 is made of a non-woven fabric can be very simply and firmly bonded to each other by laminating.

Furthermore, when the cushion layer 110 and the cushion finishing layer 120 of the upper sheet 100 are combined by needle punching as described above, the upper sheet 100 and the heat transfer part (due to the resulting lint N) are formed. The laminating bond of 200 can be made more robust.

9 to 11 are related to the apparatus for manufacturing the above-mentioned top sheet 100 for electric sheet.

The apparatus for manufacturing the cushion layer 110 and the cushion closing layer 120 of the upper sheet 100, the raw material supply device 1100 for supplying the raw material and the raw material supplied from the raw material supply device 1100 to receive the raw material A carding machine 1200 for opening a sheet to form a sheet, an air generator 1300 installed at a raw material discharge part of the carding machine 1200 to suction air, and a carding machine disposed after the air generator 1300. A needle punching machine for forming a nonwoven fabric by pressing the fibrous layer arranger 1400 to form a laminated sheet by stacking the sheets formed by the 1200, and the laminated sheet formed by the fibrous layer arranger 1400 to form a nonwoven fabric. (1500).

The raw material supply device 1100 is a device in which raw fibers are broken into pieces and inflated by air.

The carding machine 1200 is a device for completely opening and opening up to the partially bundled fibers. The carding machine 1200 uses a roller 1210 whose surface is formed by needle cloth, and straightens the fibers while separating the fibers one by one.

The sheets formed by arranging short fibers in parallel by the carding machine 1200 are positioned on the conveyor belt 1220 disposed behind the carding machine 1200. The conveyor belt 1220 transfers the sheet to the fibrous layer batcher 1400.

The air generator 1300 is installed above the conveyor belt 1220 or between the carding machine 1200 and the conveyor belt 1220. The air generator 1300 preferably generates a flow of air in at least one of the upper and lower portions of the sheet 1230.

Or, in particular, as shown in FIG. 10, when the air generating apparatuses 1310 and 1320 are positioned between the carding machine 1200 and the conveyor belt 1220, the air generating apparatus is provided with air in both upper and lower directions of the sheet. It can be arranged to generate a flow of.

In particular, as shown in Figure 11, the sheet 1231 is just discharged from the carding machine 1200, the direction of the short fibers are arranged left and right. However, the sheet 1232 after passing through the air generating device 1300 is arranged so that the direction of the short fibers is predominant up and down. In this way, by using the air generating device 1300, the direction of the short fibers of the sheet can be arranged up and down.

The fibrous layer placer 1400 allows the sheet to be placed in multiple layers. That is, above the conveyor belt, the sheets are reciprocated to arrange the sheets in multiple layers.

The needle puncher 1500 needle-punches the laminated sheet by vertically reciprocating a needle board having a plurality of grooves formed on the side thereof. The short fibers are physically entangled with each other, and are manufactured as one nonwoven fabric. Since the fiber layer arrangement 1400 and the needle punching machine 1500 are well known, detailed descriptions thereof will be omitted.

12 and 13 relate to a top sheet for an electric plate according to a third embodiment of the present invention.

The upper sheet 100 for an electric sheet according to the third embodiment of the present invention is characterized in that the cushion layer 110 is formed of a crosslinked foaming resin 110a, and furthermore, a cushion layer formed of a crosslinked foaming resin 110a ( A plurality of holes h penetrated in the vertical direction may be formed in the 110.

That is, the crosslinked foamed resin 110a constituting the cushion layer 110 may play the same role as the cushion layer formed of the nonwoven fabric of the present invention described above.

In addition, as a plurality of holes (h) are formed in the crosslinked foaming resin (110a) forming the cushion layer 110, the heat generated from the heat transfer portion more easily through the holes (h) of the cushion layer (110). It may be delivered to the top surface of the sheet 100.

Here, the hole (h) of the cushion layer 110 is different from the pores of the porous material such as sponge, and the like is formed or formed so that the crosslinked foaming resin (110a) has a shape having a plurality of holes (h), or crosslinked foaming. After the formation of the resin 110a, a plurality of holes h are formed by a punching method or the like.

The crosslinked foaming resin 110a constituting the cushion layer 110 may be various, and a representative example is a polyethylene resin.

In the upper sheet 100 of the present embodiment, since the cushion layer 110 is formed of the crosslinked foaming resin 110a, the coating layer 130 may be formed directly without the cushion finishing layer 120 unlike the cushion layer formed of the nonwoven fabric. .

However, for better smoothness of the coating layer 130, a cushion finish layer 120 formed between the cushion layer 110 and the coating layer 130 in a denser structure than the cushion layer 110 by a crosslinked foam resin or nonwoven fabric is positioned. Can be. Of course, the cushion finishing layer 120 is not formed through the hole in the vertical direction for the smoothness of the coating layer 130.

Furthermore, in the upper sheet 100 of the present embodiment, as the cushion layer 110 is formed of the crosslinked foaming resin 110a, the first and second cover layers formed of the lower sheet or the nonwoven fabric formed of the nonwoven fabric as the main material as described above. In order to increase adhesion to the heat transfer part including a, it may further include a cushion lower layer 115 bonded to the lower surface of the cushion layer 110 and formed of a nonwoven fabric.

The cushion layer 110 and the cushion lower layer 115 may be bonded to each other in various ways, and as described above, the adhesion between the cushion layer 110 and the cushion lower layer 115 and the upper sheet 100 and the lower sheet and the heat transfer part It may be more preferable to join each other by needle punching, for example, by joining by interlaminating.

Reference numeral '140' of FIG. 12 is an upper surface layer as described above in the first embodiment of the present invention.

Since the above has been described only with respect to some of the preferred embodiments that can be implemented by the present invention, the scope of the present invention, as is well known, should not be construed as limited to the above embodiments, the present invention described above It will be said that both the technical idea and the technical idea which together with the base are included in the scope of the present invention.

100; Topsheet 110; Cushion layer
120; Cushion finish layer 130; Coating layer
140; Upper surface layer 200; Electric heating part
210; Electric heating wire 220; First cover layer
230; Second cover layer 300; Bottom sheet
1230 sheet 1200 carding machine
1300: air generator 1400: fiber layer arrangement
1500: needle punching machine

Claims (20)

A cushion layer formed of a nonwoven fabric;
A coating layer formed on the cushion layer;
A cushion finishing layer laminated on the cushion layer and formed of a nonwoven fabric having a denier smaller than the cushion layer on an upper surface thereof;
Top sheet for electric sheet comprising a. The method according to claim 1,
The cushion layer is an upper sheet for an electric sheet, characterized in that the arrangement direction of the individual short fibers of the nonwoven fabric is superior to the vertical direction. The method according to claim 1,
The upper sheet for an electric sheet, characterized in that the thickness of the cushion layer is thinner than the thickness of the cushion layer. The method according to claim 1,
The coating layer is a top sheet for electric sheet, characterized in that formed of PET (polyethylen terephthalate; "PET") material. The method according to claim 1,
The upper sheet for the electric sheet further comprises a top surface layer of a fabric bonded to the top of the coating layer to form the surface of the electric plate. And a coating layer formed on the cushion layer, wherein the cushion layer has a plurality of holes penetrated in a vertical direction. The method of claim 6,
Further comprising a cushion finishing layer located between the cushion layer and the coating layer, the thickness is relatively thinner than the cushion layer,
The cushion finishing layer is an upper sheet for the electric sheet, characterized in that the hole is not formed in the vertical direction is formed of a cross-linked foam resin or non-woven fabric with a tighter structure than the cushion layer. The topsheet of claim 1;
A lower sheet stacked below the upper sheet;
A heat transfer part positioned between the lower sheet and the upper sheet;
Electric field plate comprising a. The method according to claim 8,
The lower sheet is an electric sheet, characterized in that formed of a nonwoven fabric. The method according to claim 9,
The lower surface of the lower sheet is an electric blanket, characterized in that the entire surface coated with a foamed resin. The method according to claim 8,
The electric heating unit comprises an electric heating wire and the electric heating wire between the first and second cover layer, characterized in that it is superimposed and bonded. The method of claim 11,
The first and second cover layers are each electric field plate, characterized in that formed of a nonwoven fabric. A method for manufacturing the top sheet for electric plate of claim 5 or 7,
Supplying the cushion layer;
Supplying the cushion finishing layer and laminating and bonding the upper portion of the cushion layer;
After the bonding, coating a molten liquid forming the coating layer on the upper surface of the cushion finishing layer in a film shape;
Bonding the fabric forming the upper surface layer before drying the molten liquid phase;
After the fabric bonding, performing a drying process such that the molten liquid can be dried in the bonded state of the fabric;
Method of manufacturing a top sheet for electric sheet comprising a. The method according to claim 13,
The mutually laminated cushion layer and the cushion finishing layer is a manufacturing method of the upper sheet for electric sheet, characterized in that bonded by needle punching (needle punching). The method according to claim 13,
The fabric sheet manufacturing method of the upper sheet for electric sheet, characterized in that pressing the fabric while positioning the fabric on the molten liquid phase. A method for manufacturing the electric field plate of claim 8,
Manufacturing the upper sheet and the heat transfer unit, and manufacturing the lower sheet using a nonwoven fabric as a main material;
Bonding each of the manufactured top sheets, the heat transfer parts, and the bottom sheets by a laminating method to form the electric plate;
Method of manufacturing an electric field plate comprising a. The method according to claim 16,
The cushioning layer and the cushion finishing layer of the top sheet is a manufacturing method of the electric field plate, characterized in that bonded by mutual needle punching. The method according to claim 16,
Production of the heat transfer unit
Spreading the first cover layer;
Passing a plurality of guide pins through the first cover layer to guide the wiring of the electric heating wire;
Wiring the electric heating wire on the first cover layer along the plurality of guide pins;
Bonding the first and second cover layers with the electric heating wire therebetween;
Method of manufacturing an electric field plate comprising a. A method for manufacturing an electric sheet comprising a top sheet for an electric sheet of claim 6, a bottom sheet stacked below the top sheet, and a heat transfer part positioned between the top sheet and the bottom sheet.
The upper sheet includes a process of bonding a lower cushion layer formed of a nonwoven fabric to the lower surface of the cushion layer by needle punching, the lower sheet is manufactured using a nonwoven fabric as a main material,
The cushioning layer of the upper sheet and the lower sheet of the electric sheet manufacturing method, characterized in that for joining by a laminating method in a heat transfer portion disposed therebetween. A method for manufacturing an electric sheet comprising a top sheet for an electric sheet of claim 6, a bottom sheet stacked below the top sheet, and a heat transfer part positioned between the top sheet and the bottom sheet.
The upper sheet includes a process of bonding a lower cushion layer formed of a nonwoven fabric to the lower surface of the cushion layer by needle punching, wherein the heat transfer part is manufactured so that an electric heating wire is wired between the first and second cover layers formed of the nonwoven fabric.
The method of manufacturing an electric field plate, characterized in that for bonding the lower layer of the cushion of the upper sheet and the first cover layer of the heat transfer unit by a laminating method.

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