KR101062707B1 - Hot plate and its manufacturing method - Google Patents

Abstract

The present invention relates to a thermally enhanced heat shield having a harmful wave shielding function, a thermal foam layer laminated with a fabric as a dimensional reinforcing material, an upper panel including a heat conductive layer coated with a harmful wave shielding agent by a gravure printing method on the lower surface, and a hot wire It provides a configuration including a lower panel comprising a polyvinyl chloride high elastic foam layer having an uneven pattern that can be inserted.

According to the configuration described above, the thermal insulation sheet according to the present invention is laminated by directly woven fabric with the thermal foam layer, and the electromagnetic shielding layer is formed by a gravure printing method, thereby improving productivity and reducing costs, and As the irregularities are formed according to the shape, even if any impact is applied to the heating plate, there is no problem of disconnection, deflection, or twisting of the heating wire. Since the heating wire is located in the groove, the heating wire is exposed to the surface even by continuous thermal change or pressure. The effect is not obtained.

Thermal board, floor board, electromagnetic shielding, irregularities

Description

Thermal sheet and manufacturing method thereof

The present invention relates to a thermal insulation board with improved productivity having a harmful wave shielding function, and in particular, the fabric as a dimensional reinforcing material is laminated by a direct-bonding process, and the cost and productivity by increasing the cost and productivity by coating the material to block harmful waves with gravure printing, inserting the hot wire The present invention relates to a heated heating plate and a method of manufacturing the same, by forming a groove to be embossed so that the thickness of the heating wire is not exposed to the surface even for long-term use.

Existing thermal panels consisted of multiple layers of additional functions (far infrared rays, harmful wave blocking, germanium, amethyst, jade, antibacterial, silver nano, etc.) for various health, and then consisted of a complex structure to make one panel using sewing materials.

And as shown in Figure 1, in the prior art by placing the heating wire 110 on the non-woven fabric 130, even if a slight impact is applied to the heating plate could be the movement of the heating wire, thereby causing the disconnection and pull of the heating wire It caused frequent breakdowns. In addition, heating and cooling occurs repeatedly due to the input of electricity to the hotplate, which causes deformation of the nonwoven fabric due to heat, and the nonwoven fabric is continuously pressurized by the weight of the consumer. It has become a frequent source of dissatisfaction for consumers, such as highlighting the risks caused by

In addition, most of the existing heating sheet is made of thick non-woven fabric for the purpose of insulation and shock absorption, but in this case, when the heating sheet is used for a long time, dust is continuously generated due to the wear of the non-woven fabric, and also by pressing As the thickness became thinner, the shock absorbing function was also lowered, and there was no waterproof function, causing electric shock due to moisture. In addition, there have been many problems in safety, convenience, and efficiency, such as cold air passing through the lower nonwoven fabric to lower the effect of hot wire.

In general, the method for manufacturing the electromagnetic wave shielding flooring, as shown in Figure 2 by forming a foamed or non-foamed upper layer (2) on the substrate layer (1) to form a variety of printing surface 3, such as rotary screen or gravure Later, the transparent upper layer 4 was laminated, and the UV layer 5 was laminated as needed on the semi-finished product obtained by laminating the lower layer 7 or the back layer 8 and the like.

On the other hand, an example of a method for adding conductive carbon having an electromagnetic wave blocking function is disclosed in Japanese Patent Laid-Open No. 2002-80899. That is, impregnating a paste sol containing 0.1 to 100 parts by weight of conductive carbon powder into a glass fiber mat made of a nonwoven fabric, and heat-dried using a gelling drum or oven at 140 to 200 ° C to form a base layer.

However, in the technique disclosed in the above document, a nonwoven fabric layer having an electromagnetic wave blocking function should be included, and the process for manufacturing the same has a problem of being difficult and expensive. In addition, even when including the non-woven fabric layer has a disadvantage that the wrinkles are badly generated when laminated with a flexible polyvinyl chloride layer.

An object of the present invention is to solve the problems described above, by simplifying the production process and coating costs by laminating a fabric as a dimensional reinforcement material in a direct laminate process and coating a layer that blocks harmful waves such as electromagnetic waves by gravure printing method. It is to provide a heated heating plate and a method of manufacturing the same.

In addition, another object of the present invention is to provide a groove for inserting a hot wire to provide a hot plate and a method of manufacturing the same to minimize the problems such as disconnection due to impact without the thickness of the hot wire exposed on the surface even for a long time use To provide.

In order to achieve the above object, the heating sheet according to the present invention may be inserted into a thermal foam layer laminated with a fabric as a dimensional reinforcing material, an upper panel including a thermal conductive layer coated with a harmful wave shielding agent by a gravure printing method on a lower surface thereof, and a heating wire may be inserted therein. It is formed to include a lower panel including a polyvinyl chloride high elastic foam layer having an uneven pattern.

In addition, the method of manufacturing a heated sheet according to the present invention comprises the steps of preparing a thermal sheet comprising polyvinyl chloride and biotite, thermally bonding the thermal sheet with a fabric in an emboss unit to produce a thermal foam layer, the After coating a shielding agent by a gravure printing method or laminating a nonwoven fabric layer impregnated with a harmful wave shielding agent on the thermally conductive layer below the thermally foamed layer, after laminating a printing layer on the thermally foamed layer and the coated thermally conductive layer and thermo-plywood, Foaming using a foaming oven, thermally laminating a transparent layer on the laminated layer, preparing a high elastic foam layer including polyvinyl chloride and precrosslinked acrylonitrile butadiene-vinyl chloride copolymer resin, and the high elastic foam Providing a concave-convex pattern on the layer and thermally plywood the layer including the thermally foamed layer.

As described above, according to the heating sheet according to the present invention, since the fabric as a dimensional reinforcing material is laminated in a direct laminated sheet process and the electromagnetic shielding layer is formed by a gravure printing method, the effect of productivity improvement and cost reduction is obtained.

And by inserting the woven fabric, the dimensional stability is provided, and the appearance is beautiful.

In addition, since the irregularities are formed according to the shape of the hot wire, even if any impact is applied to the hot plate, the problem of disconnection, deflection, and twisting of the hot wire does not occur. The effect that the hot wire is not exposed to the surface is obtained.

In addition, since the lower part of the thermal insulation board according to the present invention is made of a polyvinyl chloride foam layer, no dust is generated, and no deterioration of the cushion function due to pressing even after long-term use is achieved, and the waterproofing treatment is also excellent. By finishing the lower part with embossing, the effect of improving the insulation effect and seating property is obtained.

The above and other objects and novel features of the present invention will become more apparent from the description of the specification and the accompanying drawings.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated according to drawing.

The structure of the heating sheet of one embodiment according to the present invention will be described with reference to FIGS. 3 to 5. 3 is a cross-sectional view of the upper panel, the coating layer 30, the transparent layer 31, the printing layer 32, the thermally foamed layer 33 in which the dimensional reinforcing material is laminated, the thermal conductive layer 34, and the harmful shielding agent coating layer 37. In order. 4 is a cross-sectional view of the lower panel, and the high elastic foam layer 52 including the embossed pattern and the non-slip emboss 53 can be seen in this order. In addition, the upper panel and the lower panel are adhered by a double-sided tape 51, for example.

On the other hand, since the coating layer 30, the transparent layer 31 and the printing layer 32 is a configuration commonly adopted in the general heating sheet, a separate description thereof will be omitted.

The function and composition of the layers is as follows.

The thermally foamed layer 33 is 25 to 40 parts by weight of high-purity biotite, 28 to 36 parts by weight of plasticizer dioctylphthalate (DOP), and a stabilizer of barium-zinc-based stabilizer based on 100 parts by weight of polyvinyl chloride having a polymerization degree of 1,000. 2.5 to 3.5 parts by weight, 4 to 6 parts by weight of blowing agent azodicarbonamide, and 0.5 to 1 part by weight of pigment are prepared.

The heat conductive layer 34 has 27 to 34 parts by weight of plasticizer dioctylphthalate (DOP) and epoxidized soybean oil (ESO) based on 100 parts by weight of polyvinyl chloride having a polymerization degree of 1,000 to 1,700 in order to impart excellent thermal conductivity. ) 1-2 parts by weight, germanium 60-80 parts by weight, carbon 4-7 parts by weight, zirconium 1-2 parts by weight, 8-15 parts by weight of titanium dioxide, white pigment, 2.5-3.5 parts by weight of barium-zinc stabilizer and pigment It includes.

In addition, the harmful wave shielding agent prepared a conductive mixture comprising 20 to 30 parts by weight of carbon powder, 10 to 20 parts by weight of an acrylic binder, 4 to 5 parts by weight of vinyl acetate alcohol, and 40 to 55 parts by weight of a solvent obtained by refining with high purity. It is prepared by mixing 20-30 parts by weight of methyl ethyl ketone (MEK) and 20-30 parts by weight of toluene to 50 parts by weight of the conductive mixture.

The high elastic foam layer 52 of the lower panel has 15 to 25 parts by weight of precrosslinked acrylonitrile butadiene-vinyl chloride copolymer resin, 25 to 35 parts by weight of plasticizer dioctylphthalate, based on 100 parts by weight of polyvinyl chloride having a polymerization degree of 1,000, 2-3 parts by weight of a barium-zinc-based stabilizer as a foam stabilizer, 5-7 parts by weight of azodicarbonamide as a foaming agent and 1-2 parts by weight of a pigment.

In addition, germanium, jade, and amethyst, which have a thermal effect and health function, are added in a sheet form by adding 0.1 to 50 parts by weight to 100 parts by weight of polyvinyl chloride and formed into a sheet by a calendering method. It can be mixed in layers.

The thermally foamed layer 33 in which the dimensional reinforcing material is laminated includes a biotite for increasing the thermal effect, and is integrally laminated with the fabric by an embossing unit to impart dimensional stability and thermal insulation effect. In addition, since the thermal foam layer 33 is manufactured by a calendering method, there is an advantage that can use the existing equipment as it is.

Thermally conductive layer 34 has been added to impart good thermal conductivity. The harmful wave shielding agent is applied to the entire surface of the thermal conductive layer 34 by gravure printing in order to give a blocking effect of harmful waves such as electromagnetic waves on one side or both sides of the thermal conductive layer 34.

Figure 5 is a cross-sectional view showing another embodiment of the upper panel of the heating sheet according to the present invention, the thermal conductive layer 34 may be replaced by a non-woven layer 36. However, in the case of replacing the nonwoven fabric layer 36, the shielding agent as described above is added in a general impregnation process, unlike the heat conductive layer 34. In addition, in order to laminate the nonwoven fabric layer 36 with the heat-expandable foam layer 33, a binder 35 such as a conventional hammer powder may be further used.

However, there is a problem in that wrinkles are severely generated when the finished product is laminated to the upper or rear surface by laminating the thermally foamed layer 33 including the flexible polyvinyl chloride and the non-stretchable nonwoven fabric layer 36. However, when the weight and hardness of each layer is adjusted as shown in the following table, no folds are found.

division Thickness (mm) Weight (gr / m) Hardness (Phr) Transparent layer 0.20-0.30 450-510 28-36 Printed layer 0.10 ~ 0.15 300-350 26-34 Thermal foam layer 0.48-0.52 1,300-1,500 34-38 Hazardous wave shielding nonwoven fabric layer 0.15-0.22 60-120 -

By the way, the upper panel of the heated heating plate according to the present invention has the following additional structural features.

That is, as described below, the thermal foam layer in the upper panel of the present invention is characterized in that the fabric is integrally formed by directly stacking the fabric in the emboss unit while rolling the foam layer in the calender. At this time, the fabric not only serves as a dimensional reinforcement material, but also functions to improve the visual aesthetics of the heating sheet according to the appearance of the fabric itself.

Specifically, the fabric is used by coating the fiber with a special resin for durability, and when the coated yarn is woven in various forms, the natural appearance of the fabric appears on the surface according to the woven form. In such a case, even if the printing layer is omitted and only the thermally foamed layer in which the fabric is laminated is sufficient to process the visual aesthetic of the surface, it is effective to simplify the process and reduce the cost.

In addition, the coated special resin is manufactured using a material from which heavy metals (lead, cadmium, mercury, chromium, etc.) and formaldehyde, which causes sick house syndrome, are removed, and when the silver nano component is added to enhance antibacterial function, The product can be environmentally friendly.

Next, the manufacturing process of the heated sheet according to the present invention will be described. 6 is a flowchart illustrating a method of manufacturing a heated sheet according to the present invention.

As shown in Fig. 6, it is composed of a raw material mixing step, a kneading step of uniformly gelling by heating and pressing the mixed raw materials, and a calendering step of forming a final sheet shape. Detailed descriptions of manufacturing processes generally known in the art to which the present invention pertains are omitted below.

Rolling the foam layer at calender (170 ~ 195 ℃) and directly laminating the fabric in emboss unit (pressure of 5 ~ 8kgf / ㎠) to manufacture the foam layer in which the fabric is integrated, and then in the plywood part before foaming process After preheating with a heating drum at 120 to 180 ° C., the plywood is laminated with the printing layer 32 and the thermal conductive layer 34 at a pressure of 3 to 5 kgf / cm 2 in an embossing roll for plywood. Then, while imparting elasticity by passing through a foaming oven at 180 to 250 ° C., the upper transparent layer 31 is preheated with a heating drum at 120 to 180 ° C. in the plywood, and then 3 to 5 kgf / in an embossing roll for plywood. The laminate is further laminated at a pressure of cm 2 to produce the top panel.

A method of shielding coating using carbon and graphite on the lower portion of the upper panel, that is, the lower portion of the heat conductive layer 34 as shown in FIG. 3, is as follows.

A conductive ink containing 30 parts by weight of methyl ethyl ketone (MEK) and 20 parts by weight of a solvent is applied to 50 parts by weight of the conductive mixture having a solid content of 55 parts by weight, using a mesh roll between 70 and 150 mesh on the front of the lower panel of the upper panel. By doing so, it is possible to coat the electromagnetic shielding layer effectively. Alternatively, first, the thermal conductive layer is manufactured, and then the electromagnetic wave shielding agent is first coated on the printing press, and then the upper transparent layer, the printed layer, the thermal foam layer laminated with the fabric, and the thermal conductive layer are laminated in the foaming process, which is a finished product, and the foaming machine. In the final process, the backside printing process, the electromagnetic shielding agent can be coated once more to complete the electromagnetic shielding effect.

The highly elastic foam layer 52 of the lower panel is also manufactured by the calendering method. The components include polyvinyl chloride, precrosslinked acrylonitrile butadiene-vinyl chloride copolymer resin, plasticizer dioctylphthalate, barium-zinc stabilizer as foaming stabilizer, azodicarbonamide and pigment as foaming agent, and the like.

One method of forming an intaglio pattern for inserting an electric wire in the lower panel is possible by making a roll of an embossed pattern having an emboss depth of 0.1 to 0.2 mm in the case of a mechanical embossing method, and then transferring the non-foamed or foamed layer upper part. Do. In addition, by chemical method, by adding an inhibitor capable of lowering the foaming ratio to the printing ink of a certain degree, printing by using a gravure printing method on the upper foam layer and foaming at a high temperature (200 ~ 250 ℃), the part coated with the inhibitor The difference between the foaming factor and the uncoated part is that the intaglio and embossed patterns are formed so that the wire can be inserted.

The hot wire 54 is inserted along the intaglio embossed pattern and fixed using the double-sided tape 51.

And if necessary, passing the bottom surface of the lower panel through the embossing roll having a certain irregularities can obtain a desired pattern. This non-slip bottom has a better seating property and an increased thermal insulation effect.

Hereinafter, a method of manufacturing a heated sheet according to the present invention will be described in more detail with reference to FIG. 7. However, an Example is for illustrating this invention and this invention is not limited only to this.

First, the upper panel was manufactured as follows.

(Manufacture of thermal foam layer laminated with dimension reinforcement material)

First, in order to manufacture the thermally foamed layer 33, 40 parts by weight of high purity biotite, 30 parts by weight of plasticizer dioctylphthalate (DOP), foaming stabilizer barium-zinc based on 100 parts by weight of polyvinyl chloride having a polymerization degree of 1,000 3 parts by weight of stabilizer, 6 parts by weight of blowing agent azodicarbonamide and 1 part by weight of pigment were used.

Dispersion method of high-purity biotite to increase the thermal effect is as follows. In order to evenly disperse 18 to 29 parts by weight of high purity biotite having a particle size of 1,000 mesh to 100 parts by weight of the mixture except for biotite, the supermixer was first dispersed in the same manner as in Table 2 below, and then the mixture was short-barrier mixer. The mixture was kneaded at 100 to 120 ° C. for 7 minutes, and the first and second mixing were performed again on two rolls of 130 to 150 ° C. to completely disperse biotite.

division Stage 1 Step 2 Step 3 4 steps final Raw material input sequence Polyvinyl chloride Biotite: 1/2
Plasticizer: 1/2 Biotite: 1/2
Plasticizer: 1/2 Remainder Low speed (330 rpm) ● ● High speed (660 rpm) ● ● ● Time (seconds) 30 40 25 20 35 Temperature (℃) 80 60 125 70 50

The mixture is inverted L-shaped calendar comprising a first roll (190 ~ 195 ℃), a second roll (180 ~ 190 ℃), the third roll (165 ~ 185 ℃) and the fourth roll (170 ~ 180 ℃) By passing through to form a high-elastic thermal sheet, and by direct thermal plywood with the fabric in the emboss unit at a pressure of 4 ~ 5kgf / ㎠ again to prepare a high elastic thermal foam layer 33 laminated the dimensional reinforcing material.

Since it is conventionally known that polyester and polyvinyl chloride are not bonded by hot bonding, polyvinyl chloride is bonded in sol form or a separate binder is used for mutual bonding.

However, in the present invention, since the fabric is laminated by a method of direct plywood using the emboss unit after the calender roll, as shown in FIG. 7, the fabric does not undergo a process of impregnating or separately coating the resin (treatment agent) to the fabric. Can be secured.

The fabric is characterized by using a fabric woven using a fiber yarn produced from cotton, rayon, nylon, polyester or polypropylene as a raw material. Polyester can be used individually, or 1 or 2 of the said raw materials can be mixed and used for it. By ensuring the dimensional stability, it is possible to prevent the deformation of the product, to balance the appearance of the fabric itself and the printed pattern, thereby improving the visual aesthetics.

(Production of heat conductive layer)

The heat conductive layer 34 has 34 parts by weight of plasticizer dioctylphthalate (DOP) and 2 parts by weight of epoxidized soybean oil (ESO) with respect to 100 parts by weight of polyvinyl chloride having a polymerization degree of 1,000 to 1,700 in order to give excellent thermal conductivity. , 60 parts by weight of germanium, 7 parts by weight of carbon, 1 part by weight of zirconium, 15 parts by weight of titanium dioxide as a white pigment, 3.5 parts by weight of barium-zinc stabilizer and 1 part by weight of pigment.

For reference, a comparison of the heat conduction components is shown in Table 3 below.

division ① ② ③ ④ powder Carbon zirconium titanium germanium Compounding cost 7 One 0.5 60 Thermal conductivity (w / mk) 140 22 21 56

First, each powder and liquid raw material are mixed in a supermixer and dispersed evenly. The mixture was kneaded for 7 minutes in a 120-150 ° C half-barrier mixer, followed by primary and secondary mixing in a two-roll roll at 120-150 ° C. And the sheet | seat which was excellent in thermal conductivity was produced using the reverse L 4 book roll calendar.

(Electromagnetic shielding agent coating)

In order to impart an electromagnetic wave shielding effect to one or both surfaces of the heat conductive layer 34, 30 parts by weight of carbon powder obtained by high purity purification, 15 parts by weight of an acrylic binder, 5 parts by weight of vinyl acetate alcohol, and 50 parts by weight of a solvent are included. A conductive mixture was prepared, and the conductive ink, in which 30 parts by weight of methyl ethyl ketone (MEK) and 20 parts by weight of toluene were mixed, was applied at least once by gravure printing on the entire surface at a pressure of 20 bar / cm 2. do.

For reference, the change in electrical resistance according to the printing roll mesh is shown in Table 4 below.

division ① ② ③ ④ ⑤ Printing roll mesh 70 90 110 130 150 Electrical resistance 20 or less 20-60 60-90 90-130 130 or more

(Production of Transparent Layer)

The mixture for producing the transparent layer 31 is 28 to 34 parts by weight of dioctylphthalate, 1.5 to 2.5 parts by weight of epoxidized soybean oil, and 2 to 3 parts by weight of barium-zinc stabilizer based on 100 parts by weight of polyvinyl chloride having a degree of polymerization of 1,000. And 2-4 parts by weight of matt vinyl chloride.

First, each powder and liquid raw material are mixed in a supermixer and dispersed evenly. And the dispersed mixture was kneaded for 7 minutes in a 80 ~ 100 ℃ half-barrier mixer, and then mixed first and second in two rolls of 120 ~ 150 ℃. And the transparent sheet | seat was manufactured using the reverse L 4 book roll calendar.

(Ceramic coating)

In order to prevent contaminants and scratches on the surface of the transparent layer 31 and to facilitate cleaning, 15 to 25 parts by weight of powdered ceramic raw material is added to 30 to 50 parts by weight of a conventional heat curable two-component urethane acrylate, thereby providing a ceramic coating agent. It was prepared, and then applied to the front surface of the transparent layer 31 through the gravure printing method to cure in 60 ~ 70 ℃ aging room for 10 to 12 hours, to prepare a ceramic-coated transparent layer 31.

(Production of Printed Layer)

The printing layer 32 is based on 100 parts by weight of polyvinyl chloride having a degree of polymerization of 1,000, 35 parts by weight of diloctyl phthalate, 2 parts by weight of epoxidized soybean oil, 70 parts by weight of calcium carbonate, 10 parts by weight of titanium dioxide as a white pigment, and barium- 2 parts by weight of zinc stabilizer and 1 part by weight of pigment.

First, each powder and liquid raw material are mixed in a supermixer and dispersed evenly. The dispersed mixture was kneaded for 7 minutes in an 80 ° C half-barrier mixer, and then mixed firstly and secondly in two rolls of 150 ° C. And the printing sheet was manufactured using the reverse L 4 book roll calendar.

(Laminated / foamed / plywood / embossed manufacturing)

The printed layer 32, the high-elasticity thermal foam layer 33, and the thermal conductive layer 34, in which the dimensional reinforcing material is laminated, are thermally laminated through an embossing roll in sequence, and 4 to 25 m at 180 to 250 ° C. using a foam oven. After foaming for 1 to 3 minutes at a rate of / min, the ceramic coated transparent layer 31 preheated through a heating drum at 120 to 180 ° C. is thermally laminated, and at the same time, gives an uneven pattern and cools the finished product. .

And the lower panel was prepared as follows.

(High elastic foam layer production)

The high elastic foam layer 52 of the lower panel has 20 parts by weight of precrosslinked acrylonitrile butadiene-vinyl chloride copolymer resin, 30 parts by weight of plasticizer dioctylphthalate, and 100% by weight of barium as a foam stabilizer based on 100 parts by weight of polyvinyl chloride having a polymerization degree of 1,000. -3 parts by weight of a zinc stabilizer, 6 parts by weight of azodicarbonamide as a blowing agent, and 1 part by weight of pigment.

First, each powder and liquid raw material are mixed in a supermixer and dispersed evenly. The dispersed mixture was kneaded for 7 minutes in an 80 ° C half-barrier mixer, and then mixed firstly and secondly in two rolls of 150 ° C. And a highly elastic foam sheet was produced using the reverse L four bone roll calender.

If desired, a desired pattern can be obtained by passing the bottom surface of the foam layer through an embossing roll having a certain unevenness. The non-slip (53) -treated bottom surface is improved in seating property and heat insulation effect is increased.

(Chemical irregularities)

In order to insert the heating wire 54 on the surface of the highly elastic foam layer 52, a printing / drying agent is added to a printing ink of a predetermined frequency to reduce the expansion ratio, and then printed / dried, and then it is 200-250 ° C. using a foam oven. The embossed pattern formed by the difference in foaming magnification was obtained by foaming at a speed of 15 to 25 m / min for 2 minutes to 3 minutes, inserting a heating wire 54 at its intaglio area, and then subjecting it to a lower heating wire ( 54) can be prevented from being exposed to the surface.

To impart chemical irregularities, 10 parts by weight of a foaming inhibitor is added to 10 to 30 parts by weight of polyvinyl chloride resin having a polymerization degree of 600 to 1,000, and 30 to 60 parts by weight of toluene or methyl ethyl ketone as an organic solvent, and a general organic or inorganic pigment 1 Ink mixed with more than 20 parts by weight is used, and the ink thus prepared is printed on the surface of the high elastic foam layer 52 using a gravure printing method, and then dried to generate a pattern.

The application pressure of the printing roll used at this time is preferably 10 ~ 30bar / ㎠. If the application pressure of the printing roll exceeds 30bar / ㎠, the inhibitor ink is applied excessively, there is a problem that the inhibitor ink is also applied to the back of the foam layer is suppressed double, if less than 10bar / ㎠ partial ink is not applied Problems may occur.

In general, the application pressure of the printing roll used in the printing is 30 ~ 60bar / ㎠, in the present invention to prevent the phenomenon of being suppressed double by printing at a pressure of about 10 ~ 30bar / ㎠.

(Giving mechanical irregularities pattern)

The high elastic foam layer 52, preheated through a heating drum at 120 to 180 ° C., was passed through an embossing roll and thermally laminated. This was then performed for 2 to 3 minutes at a speed of 15 to 25 m / min at 200 to 250 ° C. using a foam oven. After foaming, the surface layer is again preheated through a 150 ° C. heating drum, and then mechanically engraved emboss is formed by using embossed rolls embossed to insert a heating wire 54 thereon.

At this time, the depth of the embossing is preferably 0.1 to 2.0 mm. If the depth of the embossing is less than 0.1 mm, the hot wire 54 may not be sufficiently inserted and transferred to the surface, and the depth of the embossing may exceed 2.0 mm. In this case, the shrinkage of the fabric during the cooling is severe, which may cause a problem of poor dimensional stability or mechanical properties of the product is not preferable.

As mentioned above, although the invention made by this inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

The present invention is used for a hot plate.

1 is an exploded view showing the structure of a conventional heated sheet;

Figure 2 is a cross-sectional view showing a laminated structure of a conventional flooring.

Figure 3 is a cross-sectional view showing the upper panel of the heating plate according to the invention.

Figure 4 is a cross-sectional view showing a lower panel of the heating plate according to the invention.

Figure 5 is a cross-sectional view showing another embodiment of the upper panel of the heating plate according to the invention.

6 is a flowchart illustrating a method of manufacturing a heated sheet according to the present invention.

Figure 7 is a process diagram showing a method of manufacturing a thermal foam layer laminated dimensional reinforcing material of the thermal insulation board according to the present invention.

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

30: coating layer 31: transparent layer

32: printed layer 33: thermal foam layer laminated fabric

34: thermal conductive layer 35: binder

36: shield impregnated nonwoven fabric layer 37: shield coating layer

51: double-sided tape 52: high elastic foam layer

53: nonslip 54: hot wire

140: basalt fabric layer 150: electromagnetic shielding layer

160: shell

Claims (10)

A heated sheet made of a plurality of layers, A top layer including a coating layer, a transparent layer, a printing layer, a thermal foam layer directly laminated with the fabric as a stiffener by an emboss unit, and a thermal conductive layer coated with a harmful wave shielding layer on one or both surfaces by a gravure printing method; A lower panel including a polyvinyl chloride high elastic foam layer having an uneven pattern into which a heating wire can be inserted, And a bottom surface of the polyvinyl chloride high elastic foam layer is non-slip treated. A heated sheet made of a plurality of layers, A top panel including a coating layer, a transparent layer, a printing layer, a thermal foam layer directly laminated with the fabric as a stiffener by an emboss unit, and a nonwoven layer impregnated with a harmful wave shielding agent; A lower panel including a polyvinyl chloride high elastic foam layer having an uneven pattern into which a heating wire can be inserted, And a bottom surface of the polyvinyl chloride high elastic foam layer is non-slip treated. The method of claim 2, Each layer of the upper panel is a heated sheet characterized in that it has the same specifications as in the table below. division Thickness (mm) Weight (gr / m) Hardness (Phr) Transparent layer 0.20-0.30 450-510 28-36 Printed layer 0.10 ~ 0.15 300-350 26-34 Thermal foam layer 0.48-0.52 1,300-1,500 34-38 Hazardous wave shielding nonwoven fabric layer 0.15-0.22 60-120 - delete The method according to claim 1 or 2, The thermally foamed layer is 25 to 40 parts by weight of high purity biotite, 28 to 36 parts by weight of plasticizer dioctylphthalate (DOP), foam stabilizer barium-zinc-based stabilizer 2.5 to 3.5 with respect to 100 parts by weight of polyvinyl chloride having a polymerization degree of 1,000. A heating sheet comprising a weight part, a foaming agent azodicarbonamide 4 to 6 parts by weight and a pigment 0.5 to 1 part by weight. The method according to claim 1 or 2, The harmful wave shielding agent is methylethyl to 50 parts by weight of a conductive mixture comprising 20 to 30 parts by weight of carbon powder, 10 to 20 parts by weight of an acrylic binder, 4 to 5 parts by weight of vinyl acetate alcohol, and 40 to 55 parts by weight of a solvent. Ketone (MEK) 20 to 30 parts by weight, toluene 20-30 parts by weight is added to the heated sheet. The method according to claim 1 or 2, The high elastic foam layer is 15 to 25 parts by weight of precrosslinked acrylonitrile butadiene-vinyl chloride copolymer resin, 25 to 35 parts by weight of plasticizer dioctyl phthalate, and barium-a as a foam stabilizer, based on 100 parts by weight of polyvinyl chloride having a polymerization degree of 1,000. 2 to 3 parts by weight of a linkage stabilizer, 5 to 7 parts by weight of azodicarbonamide and 1 to 2 parts by weight of a pigment as a blowing agent. The method according to claim 1 or 2, The heated sheet, characterized in that the woven form of the fabric appears on the surface. delete A method of manufacturing the heated sheet of claim 1 or 2, Thermally plywood the fabric as a stiffener by means of an emboss unit, and directly laminating it; Coating the harmful wave shielding agent on the thermal conductive layer by gravure printing or impregnating the nonwoven layer, Providing an uneven pattern on the highly elastic foam layer, and And a non-slip treatment on the bottom surface of the high elastic foam layer.

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