KR20010091687A - Moulding system with paper slurry for making paper package - Google Patents

Abstract

PURPOSE: A forming system of pulp mold is provided, which is characterized by increasing marketability of pulp mold products owing to having uniform thickness and smooth surface by pressurizing and drying with a thermal aspirator and increasing workability owing to drying rapidly into a drying furnace by convective heat of hot blast and radiated heat of far infrared ray. CONSTITUTION: The forming system of pulp mold is comprised of: a metal mold device(60) absorbing pulp to the surface of the screen mesh and forming pulp mold material(M); a metal mold having special shape adhered on a screen mesh; a metal mold box connected with the metal mold; a sucking pipe and a discharging pipe connecting with both ends of the metal mold box and supporting to be possible to rotate and to move in the vertical direction; many thermal suction apparatuses(70) direct-heat-drying the pulp mold material(M) by pressurizing and heating; a suction box installing an exothermic device such as a heater; a suction frame adhered to the lower side of the suction box and forming many through holes; a suction hose and a discharging hose connected with the suction box; and the drying furnace comprised of many blowers blowing hot and dry air, a conveyor(84) transferring the pulp mold material(M) and an emission device of far infrared ray such as a far infrared ray screen.

Description

Pulp Molding System {MOULDING SYSTEM WITH PAPER SLURRY FOR MAKING PAPER PACKAGE}

The present invention relates to a pulp mold forming system, and more particularly, in the pulp mold forming using paper slurries, by drying with hot air together with drying by direct heating, it is possible to increase the productability and productivity of the pulp mold product. The present invention relates to a pulp mold forming system.

In general, a pulp mold forming system is a liquid pulp-type paper slurry made by mixing waste paper and the like with water to dissociate it to make various packaging materials, buffer materials, and the like. Depending on the method, drying furnace is divided into drying method and hot mold drying method.

As shown in FIG. 1, the pulp mold forming system of the drying furnace is a raw material box (B) and the raw material for storing and supplying the pulp (paper slurry) P as much as necessary for molding from the main tank (T) as shown in FIG. It is divided into a molding part for molding the pulp (P) stored in the box (B) to a specific shape, and a drying part for drying the pulp molded in the molding part.

Here, the molding part for molding the pulp (P) to a specific shape to make the pulp molding (M) and the mold machine (10) for transferring the pulp molding (M) made by the mold 10 to the drying unit It is composed of a draw aspirator 20, the mold machine 10 is a box-shaped mold box 12, as shown in Figure 2, and a structure provided with a screen mesh (14) of a particular shape on one side thereof As a mold (13) attached to the mold box 12 and the suction / discharge pipe (16) (17) connected to both ends of the mold box 12, respectively, rotatably supporting the mold box 12 It consists of).

The draw-out aspirator 20 is composed of a suction box 22 and a suction frame 24 attached to the lower side of the suction box 22. The suction frame 24 is a screen mesh 14 of the mold machine 10. It has a structure that can form a plurality of absorption holes (not shown) is formed, the suction box 22 is connected to the suction / discharge hose (26) (27).

A suction device (not shown) such as a vacuum pump is connected to the suction pipe 16 of the mold machine 10 and the suction hose 26 of the blowout suction machine 20, and the discharge pipe 17 and the discharge hose 27 are connected. To the pressurization device (not shown), such as an air compressor, is connected.

In addition, the drying unit includes a drying furnace 30 having a plurality of blowers 32 for ejecting hot and dry hot air, and a conveying mechanism such as a conveyor 34 configured along the blowers 32.

According to the conventional drying furnace pulp mold forming system as described above, the molding process by the mold machine 10, the blow-out transfer process by the blowout suction machine 20, and the drying process by the drying furnace 30 are sequentially As a result, a complete pulp mold product is produced, which will be described in detail below.

First, in a state in which the mold 13 attached to the mold box 12 of the mold machine 10 is inserted into the raw material box B containing the pulp P with the screen mesh 14 downward (FIG. 2). Pulp (P) is adsorbed on the surface of the screen mesh 14 by the vacuum suction operation through the vacuum pump. At this time, the water in the raw material box (B) is discharged through the suction pipe 16 via the screen mesh (14).

After the pulp P is continuously adsorbed and the thickness reaches a constant value, after the pulp mold M is molded, the mold box 12 rotates and comes out of the raw material box B, and the screen mesh 14 ) And the pulp mold (M) adsorbed thereto are directed upward.

After the pulp mold mold (M) is out of the raw material box (B), the blowout aspirator 20 is lowered to bring the suction mold 24 into close contact with the pulp mold water (M), wherein the mold box (12) is a vacuum pump. As a result of stopping the suction operation by the air compressor and discharging by the air compressor, the pulp mold mol (M) is separated from the screen mesh 14, and conversely, in the suction 22 of the suction suction machine 20, a vacuum pump is used. The pulp mold mol M is adsorbed to the suction mold 24 by the suction action.

Then, the pulp mold (M) adsorbed to the blowout suction unit 20 is moved to the drying unit is placed on the conveyor 34, the blower 32 while passing through the drying furnace 30 by the operation of the conveyor (34). It is completely formed by drying by the high temperature dry hot air blown out from). That is, according to the drying furnace pulp molding system as described above, the molding and drying of the pulp molding water (M) is to be made quickly by the simple molding operation of the mold machine 10 and the hot air drying operation of the drying furnace (30). do.

However, according to the drying furnace pulp molding system, first, the pulp (P) is adsorbed on the screen mesh 14 by the operation of the mold machine 10 during the molding of the pulp molding (M), and then mold ( Since 12) rotates and comes out of the raw material box B, at the time of rotation of the metal box 12, the adsorbed pulp P exits later from the raw material box B according to the rotation direction of the metal box 12. Not only the thickness of the pulp molded water (M) varies depending on the site by flowing to the side, the edges are not neatly finished and become messy, and secondly, when the pulp molded water (M) is compressed, the moisture is high. Since the suction mold 24 is not strongly pressed against the pulp molding M, the upper surface of the pulp molding M is not smoothly formed. Third, the pulp having a high water content during the drying process is obtained. Sudden moisture as the mold (M) is in direct contact with the hot air There is a problem that the commercialization of the produced pulp mold product, such as shrinkage deformation due to evaporation occurs.

The hot mold drying type pulp mold forming system is designed to solve the problems of the drying type pulp mold forming system by drying as described above, and as shown in FIG. 3, a mold machine 40 and a plurality of heat aspirators 50 and It consists of a plurality of heat support 58 corresponding to the heat absorber 50.

The mold machine 40 is attached to the mold box 42 as a structure having a box-shaped mold box 42 vertically moved up and down and a screen mesh 44 of a specific shape on the upper surface as shown in FIG. The mold 43 and the suction / discharge hose 46, 47 connected to the mold 42, the heat suction 50 is a suction box 52 is provided with a heater (not shown) ), A suction cup 54 of a particular shape attached to the lower surface of the suction box 52, and suction / discharge pipes 56 and 57 connected to the suction box 52, and a heat support 58 The upper surface is configured in the form corresponding to the suction frame 54.

According to such a hot mold drying type pulp mold forming system, first, the suction action is performed while the mold box 42 of the mold machine 40 is locked to the raw material box B (indicated by a virtual line in the drawing), so that the pulp (P) ) Is adsorbed on the screen mesh 44 to form a pulp molding (M).

Then, after the mold machine 40 rises vertically and out of the raw material box B, the heat aspirator 50 descends and the suction mold 54 presses the pulp mold M for a predetermined time. A direct heating operation by a heater is performed. After completion of the compression heating operation, the pulp mold water M is transferred to the heat support 58 by the heat aspirator 50, and the transferred pulp mold water M is transferred. The pressure drying operation by the other heat aspirator 50 is repeatedly performed.

That is, according to the hot mold drying type pulp mold forming system, since the mold machine 40 vertically moves up and down, the mold box 42 comes out of the raw material box B, and the pulp mold material (M) is dried as in the drying furnace drying method. ) Is not biased to one side. In addition, since the pulp mold (M) is compressed and dried while passing through the plurality of heat absorbers 50 and the heat support 58, the phenomenon of shrinkage deformation due to rapid moisture evaporation during drying is also prevented.

However, according to the conventional hot mold drying type pulp mold forming system as described above, the pulp adsorbed to the upper end of the screen mesh 44, i. By flowing down and accumulated at the lower end of the screen mesh 44, that is, the valley part, the thickness of the pulp molding water M becomes non-uniform, and one pulp molding water M has a plurality of heat aspirators 50 and heat supporters ( 58) repeatedly press-drying, there is a problem that the product quality of the product is inferior, such as the pulp molding (M) is broken or deformed when the suction mold 54 is pressed.

In addition, since the pulp mold (M) is dried only by direct heat transfer by the heat absorber 50 and the heat support 58, the drying time is long, and the thickness of the pulp mold (M) in a drying manner is lower than a predetermined value. There is also a problem in that it is impossible to make various types of pulp mold products.

The present invention has been made to solve the above-mentioned conventional problems, pulp mold that can increase the merchandise and productivity of the molded pulp molded product by performing the drying by the direct heating together with the drying by hot air when forming the pulp mold It is aimed at providing a molding system.

Figure 1 is a block diagram showing the configuration of a conventional drying furnace pulp mold forming system.

Figure 2 is a state diagram showing the structure and operation of the mold and the blowout suction machine applied to the drying furnace pulp mold forming system.

Figure 3 is a block diagram showing the configuration of a general hot mold drying type pulp mold forming system.

Figure 4 is a state diagram showing the structure and operation of the mold and the heat absorber applied to the hot mold drying type pulp mold forming system.

Figure 5 is a block diagram showing the configuration of a pulp mold forming system according to an embodiment of the present invention.

Figure 6 is a state diagram showing the structure and operation of the mold and heat absorber applied to the pulp mold forming system according to an embodiment of the present invention.

7A, 7B, and 7C are state diagrams sequentially illustrating a process in which pulp mold material is press-dried by a heat absorber in a pulp mold forming system according to an exemplary embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

60: mold machine 62: mold box

63: mold frame 64: screen mesh

66: suction pipe 67: discharge pipe

70: heat aspirator 72: aspirated

74: suction frame 74a: absorption hole

76: suction hose 77: discharge hose

78: heat support 80: drying furnace

82: blower 84: conveyor

90: far infrared screen B: raw material box

M: Pulp Molded Water P: Pulp

The pulp mold forming system provided to achieve the above object is a mold of a particular shape having a screen mesh attached to one side, a mold box coupled with the mold frame, and is connected to both ends of the mold box to rotate and rotate the mold box. A mold machine configured to suck and discharge the pulp on the surface of the screen mesh through a suction action, the suction / discharge pipe supporting vertically movable vertically; The pulp molding is composed of a suction box having a heating means such as a heater, a suction frame attached to the lower side of the suction box, and formed with a plurality of vent holes, and a suction / discharge hose connected to the suction box. A plurality of heat absorbers for directly drying the heat; And a blower comprising a plurality of blowers for blowing hot and dry hot air, and a conveying mechanism such as a conveyor for transferring the pulp mold material along the blowers.

And, the drying furnace is characterized in that it further comprises a far infrared emitting means such as a far infrared screen.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 5 to 7C.

First, the pulp mold forming system according to the embodiment of the present invention is pressed in conjunction with the mold machine 60 and the mold machine 60 for molding the pulp molding (M) as shown in Figure 5 It comprises a heat absorber 70 for direct drying in one state, and a drying furnace 80 for drying the pressure-dried pulp mold (M) through hot air and far infrared rays.

Here, as shown in FIG. 6, the mold machine 60 has a mold box 62 and a mold frame 63 attached to the mold box 62 as a structure having a screen mesh 64 having a specific shape on one side thereof. And suction / discharge pipes 66 and 67 connected to both ends of the mold box 62 so as to support the mold box 62 so as to be rotatable and vertically moveable, and the heat suction device 70 is vertical. As a horizontal movable structure, a suction box 72 having a heater (not shown), a suction frame 74 attached below the suction box 72, and a suction / discharge hose connected to the suction box 72 ( 76, 77, respectively. The suction frame 74 of the heat absorber 70 has a form in which a plurality of absorption holes 74a are formed to absorb moisture (see FIG. 7A).

In addition, the drying furnace 80 includes a plurality of blowers 82 for blowing hot and dry hot air, a conveying mechanism such as a conveyor 84 for conveying the pulp mold M along the blowers 82, and a far-infrared screen. And far infrared ray emitting means such as 90 (see Fig. 5).

Referring to the operation of the pulp mold forming system according to an embodiment of the present invention configured as described above are as follows.

First, the pulp P is adsorbed on the surface of the screen mesh 64 by the suction action of the suction pipe 66 while the mold machine 60 is locked down in the raw material box B with the mold 63 down. After the adsorption is completed, the mold machine 60 is raised to exit the raw material box (B), and then rotated so that the mold mold 63 faces upward.

Subsequently, the heat absorber 70 is lowered to pressurize the pulp mold water M adsorbed to the screen mesh 64 (see FIGS. 7A and 7B). At this time, the suction frame 74 of the heat absorber 70 is At the same time as pressing the pulp molding (M), and absorbs the moisture of the pulp molding (M) through the absorption hole (74a) is discharged through the suction pipe (76).

Here, since the suction mold 74 is in a heat-generating state by the operation of the heater mounted in the suction box 72, the pulp mold water M is first dried by performing a direct heating action on the pulp mold water M. After the first drying process, the pulp mold (M) is transferred to a separate heat support 78 by the heat absorber 70, and then press-dried again by another heat sucker 70. The drying process is performed (see FIG. 5).

The pulp mold water M, which has undergone the first and second drying processes by the heat aspirator 70, has a uniform thickness and a smooth surface due to the compression action of the heat aspirator 70 (see FIG. 7C). As a result, the film is dried to some extent without shrinkage due to rapid evaporation of water.

Then, the pulp mold (M) after the drying process by the heat aspirator 70 is transferred to the drying furnace 80 and passed through the drying furnace 80 by a transfer mechanism such as a conveyor 84, the final 3 In the drying furnace 80, hot air is discharged through the blower 82, and at the same time, far infrared rays are emitted from the far infrared emitting means such as the far infrared screen 90, and by the heat of convection of the hot wind and the radiant heat of the far infrared rays. The pulp molding (M) is dried twice. In particular, the far-infrared rays transmit the heat evenly not only to the surface of the pulp molded product M, but also to the inside, whereby the pulp molded product M is dried more effectively.

As described above, according to an embodiment of the present invention, while the pulp molding (M) is sequentially passed through the heat aspirator 70 and the drying furnace 80, it has an even thickness and a smooth surface and convective heat caused by hot air. And finish drying quickly through radiant heat by far infrared rays.

According to the pulp mold forming system according to the present invention, first, the pulp mold formed by a mold machine is pressurized and dried many times by a heat absorber to have an even thickness and a smooth surface, thereby improving the productability of the pulp mold product. The pulp molded product pressurized and dried by the heat aspirator is dried and dried quickly through the convective heat caused by hot wind and the radiant heat caused by far infrared rays in the drying furnace, thereby improving the productivity of the pulp mold product.

Claims (2)

A mold of a specific shape having a screen mesh attached to one side, a mold box coupled to the mold frame, and suction / discharge pipes connected to both ends of the mold box to support the mold box so as to rotate and vertically move vertically. A molder for adsorbing pulp on the surface of the screen mesh to form a pulp molding by suction; The pulp molding is composed of a suction box having a heating means such as a heater, a suction frame attached to the lower side of the suction box, and formed with a plurality of vent holes, and a suction / discharge hose connected to the suction box. A plurality of heat absorbers for directly drying the heat; Drying furnace composed of a plurality of blowers for blowing hot and dry hot air, and a conveying mechanism such as a conveyor for conveying pulp moldings along the blowers Pulp mold forming system comprising a. The method of claim 1, wherein the drying furnace A pulp mold forming system, characterized by further comprising a far infrared ray emitting means such as a far infrared screen.