KR102080191B1 - Dry apparatus of sheet - Google Patents

Abstract

The present invention relates to a sheet drying apparatus with an improved structure to efficiently dry a coating solution present on the surface of a sheet formed by an extruder in a narrow space by including a stacked drying chamber consisting of an upper drying chamber and a lower drying chamber during drying work of the sheet. The sheet drying apparatus comprises: an upper drying chamber arranged to be stacked on an upper portion of a frame, and provided with a plurality of heaters arranged in a sealed chamber to heat and dry a coating solution coated on the surface of a transported sheet; a lower drying chamber arranged on a lower side of the upper drying chamber to communicate with the outside, and provided with guide rolls on both the left and right sides thereof to guide vertical track transport of the sheet to cool and dry the heated and dried sheet by air cooling; and a plurality of upper and lower blowing fans installed in a fixed base installed in the ceiling and the bottom of the lower drying chamber and driven by an external power supply to blow winds towards the sheet track-transported in the lower drying chamber.

Description

Sheet Drying Equipment {DRY APPARATUS OF SHEET}

The present invention relates to a sheet drying apparatus, and in particular, to provide a laminated drying chamber composed of an upper drying chamber and a lower drying chamber during the drying operation of a sheet formed by an extrusion molding machine, to efficiently dry the coating liquid on the surface of the sheet in a narrow space. The sheet drying apparatus is improved in structure thereof.

In general, food packaging containers are demanding high-quality, high-quality products due to the increase of consumer's national income and awareness of food hygiene, and the rapid change of climate and seasonal factors and consumer's food preference due to global warming. According to the diversification of ready-to-cook processed foods and the characteristics of packaged objects such as fruit fish and meat, the packaging method and demand pattern of various foods are rapidly changing.

According to the change in the food packaging method and the demand pattern, the food packaging container goes beyond the concept of simple packaging for the conventional food and responds to the characteristics of the packaged object to supply the fresh food and increase the freshness of the food. It is equipped with functionalities such as antibacterial, deodorization, antioxidant, etc. to reduce waste, secure heat resistance for instant processing cooking and packaging of hot foods, and reduce the occurrence of environmental pollution due to disposal of packaging containers. The development of a food packaging container that secures heat resistance for food packaging and has eco-friendliness when disposing of the packaging container is urgently required.

As a prior art related to the manufacturing method of the existing sheet, as disclosed in Korean Patent Publication No. 10-1402747 "Multilayer PET Sheet and its manufacturing method" (Registration Date: 2014.05.27), Extruding a multilayer PET layer having a first layer and a second layer made of two different PET raw materials from a multilayer extrusion machine; Forming a sheet on the back side of the extruded multilayer PET layer and simultaneously forming a sheet into a sheet, and after forming the sheet, forming a protective film on the surface of the PET layer formed of the sheet. Wow; Cutting the sheet to a predetermined width; Sucking and discharging foreign matter including dust while the sheet is being cut around the sheet being cut; Applying a primer, which is an adhesive aid, to the surface of the decoration film of the sheet to dry it; Laminating a protective tape on a surface of the primer layer; And while generating anion in order to prevent the generation of the corrector of the sheet, it is made further comprising the step of winding by cutting to a certain length.

Other prior art related to the manufacturing method of the existing sheet is a polylactic acid resin (Polylactide) as disclosed in Korean Patent Publication No. 10-0977362 "Anti-fogging sheet and a method for producing the same" (Registration Date: 2010.08.16) aliphatic carboxylic acid amide having an amide bond in the resin composition consisting of 999 to 900 parts by weight of the composition and one to 100 parts by weight of the composition consisting of at least one selected from the group consisting of aliphatic polyesters, aromatic-aliphatic polyesters or polylactic acid copolymers. Preparing a sheet by melting and extruding 05-50 parts by weight of an organic nucleating agent and 05-50 parts by weight of sorbitol, and then discharging it through a slip die; Performing a corona discharge treatment on the coated surface of the sheet prepared above; Preparing an antifogging coating solution by mixing 100 parts by weight of an antifoaming agent consisting of a surfactant with 3 to 50 parts by weight of a fluorocarbon resin selected from a polytetrafluoroethylene-based resin, a fluorinated ethylene propylene copolymer, or an ethylene tetrafluoroethylene-based resin ; Applying the antifogging coating solution prepared in the step to one or both sides of the corona discharge treated sheet; And drying the coating solution applied for 10 to 30 seconds in a 60 to 100 ° C. hot air drying process after the coating treatment in the step.

By the way, the existing sheet drying apparatus is arranged in the conveying direction of the sheet to perform the function of drying the coating liquid applied to the surface of the sheet, in this case the drying operation is performed during the transfer of the sheet for the entire length of the sheet manufacturing process Not only does it occupy a significant portion of the space, there is a disadvantage that the space constraints of the manufacturing equipment is followed by the arrangement of the drying apparatus.

Korean Patent Publication No. 10-1402747 "Multi-layer PET Sheet and Manufacturing Method thereof" (Registration Date: 2014.05.27) Korea Patent Publication No. 10-0977362 "Anti-fogging sheet excellent in heat resistance and its manufacturing method" (Registration Date: 2010.08.16)

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a laminated drying chamber composed of an upper drying chamber and a lower drying chamber in the drying operation of a sheet formed through an extruder. The present invention provides a sheet drying apparatus having an improved structure so as to efficiently dry the coating liquid on the surface.

The present invention for achieving the above object is provided with a top drying chamber for heating and drying the coating liquid applied to the surface of the sheet is provided to be stacked on the upper frame and the plurality of heaters are disposed and transported inside the hermetic chamber; A lower drying chamber provided at a lower side of the upper drying chamber so as to be in communication with the outside, and provided with guide rolls for guiding the upper and lower orbital transfers of the sheet at left and right sides thereof, and cooling and drying the heat dried sheet by air cooling; And a plurality of upper and lower blower fans installed on the ceilings and the bottoms of the lower drying chambers and driven by an external power source to blow wind to the seat side orbitally conveyed in the lower drying chambers. .

The lower drying chamber is further provided with a side blower fan disposed to be spaced apart by a support from one side of the frame and blows the wind from the upper drying chamber to the seat side which is lowered in the vertical direction from the lower drying chamber to the lower drying chamber.

The lower drying chamber has three guide rolls for guiding the trajectory of sheet feeding on one side and the other side at a height corresponding to each other, and the front, rear, left, and right sides of the lower drying chamber are kept open to the outside and the outside Wind is transmitted to the sheet side to dry the sheet.

The fixing stand has a vertical stand composed of first and second vertical segments that are divided to be adjustable in length, and the vertical stand is coupled to be protruded outwardly by inserting the second vertical stand into the first vertical stand. A coupling hole is formed in one vertical stand, and a plurality of assembly holes are formed up and down in the second vertical stand, and the fixing pin is fitted into one of the assembly holes through the coupling hole.

According to the present invention, after the sheet is heated and dried by the conductive heat of the heater in the upper drying chamber of the hermetic chamber structure, the heated sheet is orbitally conveyed so as to be transferred in a zigzag form from the lower drying chamber through which the external wind passes in four directions. The upper and lower blower fan is blown to one side of the sheet, and the lower blower fan is blown to the other side of the sheet so that the sheet can be cooled and dried in an air-cooled manner. In addition to reducing the electrical energy required during the drying operation, as it is dried while being transferred to the zigzag from the upper and lower drying chambers, the volume of the drying apparatus can be made compact, thereby reducing the space constraint.

In addition, the sheet drying process of the present invention is provided with a lateral blower fan on one side of the frame, the lateral blower fan is blown to the other side of the sheet conveyed from the upper drying chamber to the lower drying chamber to improve the cooling drying efficiency of the sheet It has an advantage that can be made.

1 is a schematic view showing the configuration of a sheet drying apparatus according to the present invention.
Figure 2 is a perspective view of the present invention the side blower fan.
3 is a configuration diagram showing another modified example of the present invention.
Figure 4 is a schematic sheet manufacturing process diagram applied to the drying apparatus of the present invention.

The present invention compacts the drying apparatus for drying the coating liquid on the surface of the sheet conveyed through the extrusion molding machine, and improves the drying efficiency of drying the sheet, thereby reducing energy used during sheet drying. .

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

In the following description of the present invention, when it is determined that detailed descriptions of related well-known technologies or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to a user's intention or custom. Therefore, the definition should be made based on the contents throughout the specification. In addition, the term 'comprising' a certain component means that the component may further include other components, not to exclude other components unless specifically stated otherwise.

1 to 4, the sheet drying apparatus according to the present invention is provided to be stacked on the frame 100 and a plurality of heaters 210 are disposed and transported inside the hermetic chamber of the sheet S. An upper drying chamber 200 for heating and drying the coating liquid applied to the surface; A guide roll 110 is provided at the lower side of the upper drying chamber 200 to communicate with the outside, and guides the upper and lower orbital conveyance of the sheet S at both left and right sides thereof to heat-dry the sheet S. A lower drying chamber 300 cooling and drying by air cooling; And a plurality of images installed on the ceiling 400 and the fixing stand 400 installed on the floor of the lower drying chamber 300 and driven by an external power source to blow wind to the seat S side which is orbitally conveyed in the lower drying chamber 300. , The lower blowing fan (500A, 500B); made.

Referring to Figure 1, the drying apparatus of the present invention is roughly divided into an upper drying chamber 200 and a lower drying chamber 300, the upper drying chamber 200 is provided with a plurality of heaters 210 to dry the sheet (S) to be transported The lower drying chamber 300 is provided with upper and lower blowing fans 500A and 500B to cool and dry the sheet S.

The upper drying chamber 200 has a rectangular cross-sectional closed chamber structure and the entrance opening 202 is formed so that the sheet (S) enters into one side, the outlet (S) is drawn out to the outside on the lower side ( 204 has a formed structure.

In addition, the upper drying chamber 200 is provided with a feed roll 220 for guiding the sheet (S) to be transferred to the outlet (204) side through the inside of the chamber from the entrance (202) to the sheet (S) inside.

The lower drying chamber 300 has a structure in which front, rear, left and right sides are opened to communicate with the outside by the frame 100, and external wind is applied to the surface of the sheet S passing through the lower drying chamber 300. It has a structure that can be delivered and cooled by air cooling.

The lower drying chamber 300 is provided with three guide rolls 110 each supporting one side and the other side of the frame 100 so as to be idling at a height corresponding to each other to support the transfer of the sheet S to be traversed. .

In addition, the lower drying chamber 300 is the upper blowing fan 500A is positioned at a position spaced downward from the ceiling of the lower drying chamber 300 by the fixing table 400 is moved in the transverse direction at a height close to the ceiling The air is blown to one side of the sheet (S), and the lower blowing fan 500B is positioned at a position spaced upwardly from the bottom of the lower drying chamber 300 by the fixing table 400 fixed to the bottom surface and the lower drying chamber. Wind is blown to the other side of the sheet (S) passing through the lower side of the (300).

The holder 400 is connected to be fixed at a predetermined height by a vertical stand 410 connected to extend downward from the ceiling of the lower drying chamber 300 and connected to extend upward from the bottom of the lower drying chamber 300.

And, as shown in Figure 2, the lower drying chamber 300, the side blowing fan (500C) for transmitting the wind in the lateral direction with respect to the seat (S) which is vertically lowered to one side of the frame 100 ) Is further provided.

The lateral blowing fan 500C is supported by a support 600 connected to one side of the frame 100 and positioned at a position spaced apart from one side of the frame 100.

For this reason, the sheet S drawn out through the outlet 204 of the upper drying chamber 200 enters through the space spaced between the lateral blowing fan 500C and the frame 100 vertically downward, It is possible to be transferred to the interior of the drying chamber (300).

3 is a view showing another modified example of the present invention, the fixing stand 400, the fixing stand 400 is provided with a vertical stand 410 consisting of the first and second vertical stand (412,414) is divided so as to adjust the length, The vertical stand 410 is coupled to the second vertical stand 414 is inserted into the interior of the first vertical stand 412 so as to emerge from the outside, the coupling hole 411 to the first vertical stand 412. ) Is formed, and a plurality of assembly holes 413 are formed in the second vertical stand 414 up and down, and the fixing pins 415 inserted into one of the assembly holes 413 through the coupling holes 411. ).

In this case, the total length of the vertical stand 410 is variable so that the height of the fixing stand 400 can be adjusted.

That is, the first vertical table 412 has a pipe structure having a hollow so that an end thereof is integrally connected to the side surface of the fixing table 400 and the second vertical table 414 is inserted therein.

One end of the second vertical stand 414 is integrally connected to the ceiling or the bottom surface of the lower drying chamber 300, and the other end of the second vertical stand 414 is inserted into the hollow of the first vertical stand 412.

Another modified example of the fixing stand 400 is that the first vertical stand 412 is integrally connected to the fixing stand 400 while the second vertical stand 414 is fixed to the ceiling or the bottom of the lower drying chamber 300. After setting the height while moving downward, the fixing pin 415 penetrates the coupling hole 411 of the first vertical table 412 and pins to one of the plurality of assembly holes 413 to make the first and second vertical. By adjusting the overall length of the stages (412, 414), it is possible to arbitrarily adjust the interval of the upper and lower blower fan (500A, 500B) with respect to the sheet (S) conveyed in the lower drying chamber (300).

Due to this, it is possible to arbitrarily adjust the gap between the upper and lower blowing fan (500A, 500B) and the upper and lower blowing fan (500A, 500B) for the sheet (S) during the initial setting operation to adjust the interval between the upper and lower blowing fans (500A, 500B) and the sheet (S). It is possible to improve the user's work convenience, and to maintain the optimal blowing interval with the sheet (S) can improve the cooling drying efficiency of the sheet (S).

In the present invention having such a configuration, as shown in FIG. 4, in the extrusion molding machine 10, the pellet-shaped material is heated to a liquid material state and extruded to combine the liquid materials to form a sheet S, After cooling the molded sheet (S) using the cooling roller 20, after coating the coating crude liquid using the coating roll 30 on the surface of the sheet (S) passing through the cooling roller 20, the coated The sheet S is dried using a drying apparatus composed of an upper drying chamber 200 and a lower drying chamber 300, and the sheet S is wound to be dried using the winding roll 50. Has a process.

In the drying process of the sheet (S) is passed through the coating roll 30, the sheet (S) on which the coating crude liquid is buried, as shown in Figure 1, through the inlet 202 of the upper drying chamber 200, the upper drying chamber The heat is transferred from the heater 210 of the upper drying chamber 200 while being drawn downward through the outlet 204 of the upper drying chamber 200 through the inside of the chamber 200 to maintain the dried state. The sheet S descending vertically downward through the outlet 204 is guided by the guide roll 110 provided on one side of the frame 100 to move to the other side of the frame 100. The other side of the sheet S is blown and cooled by the fan 500B and dried while being cooled, and orbitally transferred in a lower drying chamber 300 by a guide roll 110 provided at one side and the other side of the frame 100 in a zigzag form. The upper blower fan 500A is dried on the bottom of the sheet structure. The air is blown toward one side of the sheet S passing through the upper part of the yarn 300, and the sheet S is cooled and dried, and then transferred to the take-up roll 50.

Therefore, the sheet drying process of the present invention after the heating drying by the conductive heat of the heater 210 in the upper drying chamber 200 of the hermetic chamber structure, the lower drying chamber through which the external wind passes through the heated sheet (S) ( In the upper and lower portions of the lower drying chamber 300, the upper blowing fan 500A is blown to one side of the sheet S while being traversed so as to be transferred in a zigzag form at 300, and the lower blowing fan 500B is seated ( Since the air is blown to the other side of S) to cool-dry the sheet S by air cooling, heat drying and air-cooling drying can be adopted in parallel to reduce electric energy required during the drying operation of the sheet S. In addition, as it is dried while being transferred to the zigzag in the upper and lower drying chambers 200 and 300 stacked up and down, the volume of the drying apparatus can be made compact, thereby reducing the space constraint.

In addition, since the sheet drying process of the present invention is provided with a lateral blowing fan 500C on one side of the frame 100, the lateral blowing fan 500C is transferred from the upper drying chamber 200 to the lower drying chamber 300 side. It blows to the other side surface of the sheet | seat S, and has the advantage that the cooling drying efficiency of the sheet | seat S can be improved.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described above, but should be defined by the claims below and equivalents thereof.

That is, the present invention as described above is not limited to the specific preferred embodiment described above, and those skilled in the art without departing from the gist of the invention claimed in the claims Various modifications may be made, of course, and such changes will fall within the scope of the claims.

10: extrusion molding machine 20: cooling roller
30: coating roll 50: winding roll
100: frame 110: guide roll
200: upper drying chamber 202: entrance
204: outlet 210: heater
220: feed roll 300: lower drying chamber
400: fixed stand 410: vertical stand
411: coupling hole 412: first vertical table
413: assembly worker 414: second vertical table
415: fixing pin 500A: upper blowing fan
500B: Lower blower fan 500C: Lateral blower fan
600: support S: seat

Claims (4)

An upper drying chamber 200 which is provided to be stacked on the frame 100 and heat-drys the coating liquid applied to the surface of the sheet S to which the plurality of heaters 210 are disposed and transported in the sealed chamber;
A guide roll 110 is provided at the lower side of the upper drying chamber 200 to communicate with the outside, and guides the upper and lower orbital conveyance of the sheet S at both left and right sides thereof to heat-dry the sheet S. A lower drying chamber 300 cooling and drying by air cooling; And
A plurality of images installed on the ceiling of the lower drying chamber 300 and fixed to the base 400 and driven by an external power source to blow wind to the seat S side which is orbitally conveyed in the lower drying chamber 300; And a lower blowing fan (500A, 500B),
The fixing stand 400 has a vertical stand 410 composed of first and second vertical stands 412 and 414 divided to be adjustable in length, and the vertical stand 410 is inside the first vertical stand 412. The second vertical table 414 is inserted into and coupled to be protruded outwardly, a coupling hole 411 is formed in the first vertical table 412, up and down in the second vertical table 414 A plurality of assembling holes (413) are formed, the sheet drying apparatus characterized in that it comprises a fixing pin (415) to pass through the coupling hole (411) fitted in one of the assembly holes (413). The method according to claim 1,
The lower drying chamber 300 is disposed to be spaced apart from the one side of the frame 100 by the support 600 and winds toward the seat S side which is lowered in the vertical direction from the upper drying chamber 200 to the lower drying chamber 300. Sheet drying apparatus, characterized in that the side blowing fan (500C) for further blowing. The method according to claim 1,
The lower drying chamber 300 is three guide rolls 110 for guiding the trajectory transfer of the sheet (S) on one side and the other side is disposed at a height corresponding to each other,
The front and rear and left and right sides of the frame 100 is kept open and the outside and the outside wind is transmitted to the sheet (S) side characterized in that the sheet (S) to dry Drying equipment. delete

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