KR101426779B1 - Apparatus and a method for manufacturing of plastic greenhouse film - Google Patents

Abstract

The present invention relates to an apparatus and method for manufacturing a greenhouse film from a mesh roll. More particularly, a blower film extruder and a joining part form a film with a two-layer sheet-shape, and then, a corona process roll performs a corona discharge process on the film. After that, first and second coating parts and a drying device perform a double coating process on the film. Thus, a film similar to typical PO films can be produced by a stabilized facility, and a high quality anti-fogging drop-less film, the service life of which is increased by two to three years, can be manufactured. In addition, since a coating part employs a mesh-type roller, the surface of the roller is efficiently filled with a chemical, so that the chemical can be uniformly applied to a film, thereby improving convenience and reducing working time.

Description

Technical Field [0001] The present invention relates to an apparatus for manufacturing a plastic greenhouse film using a mesh roll,

The present invention relates to an apparatus and a method for manufacturing a film for a vinyl house using a mesh roll, and more particularly, to a method and apparatus for manufacturing a film for a vinyl house by using a mesh roll, After the discharge treatment, the film can be produced by a double coating method using the first and second coating portions and the drying apparatus, and a film close to the conventional PO film can be produced through the stabilized equipment. The lifetime of the film is about two to three years The use of mesh-type rollers in the coating part ensures smooth filling of medicines on the surface of the rollers, so that the medicines can be evenly applied to the film, The present invention relates to an apparatus and a method for manufacturing a film for a vinyl house using the same.

As is well known, the polymer film of polyolefin (low density polyethylene, linear low density polyethylene, ethylene vinyl acetate copolymer resin) system has advantages such as excellent processability, film flexibility, excellent mechanical properties, optical characteristics, House films and industrial packaging films. These polyolefin films are required to meet the characteristics required for end use in order to be used in each application, and particularly, in order to be used for agricultural vinyl house use, very demanding requirements must be satisfied in comparison with other uses.

Important characteristics required for use in agricultural greenhouses include inherent transparency as optical properties, mechanical properties such as excellent tensile strength, tear strength and elongation, and the like as the most important required characteristics. Since the property of relics is the most important characteristic that determines the quality and the period of use of agricultural greenhouses, most agricultural film manufacturers and resin manufacturers have been conducting research and development focusing on the development of technology to uniformly express such relics over a long period of time.

The most common method is to add a hydrophilic surfactant to the interior of the film during the production of the film, and then add immiscible additives to the surface of the film after the film is installed in the green house. However, the above-described method is not only ineffective during use due to the duration of the surfactant leaking from 3 to 6 months, but also causes the surfactant to escape to the outside of the film in an amount of 20 to 30% There is a problem that whitening occurs and inconvenience and expense of replacing the film from time to time are increased. Or PVA is coated on a polymer film is disclosed in Japanese Patent Laid-Open No. 59-217783. However, this method is problematic in that the coated resin layer tends to be cracked and adhesion on the surface with the matrix is poor, .

A method of forming a hydrophilic resin on the surface of a transparent material by using a random copolymer containing mostly a hydrophilic polymer moiety and a small amount of a hydrophobic polymer moiety or a combination of a hydrophilic polymer and a surfactant in order to maintain the film strength against water Is disclosed in Japanese Patent Publication No. 52-47754, however, the strength and the adhesive force of the film are improved while the non-invariant performance is poor.

In order to solve these problems, a method of imparting hydrophilicity to a polymer film in the order of high-frequency surface treatment, coating of a hydrophilic material, and photo-curing is disclosed in Korean Patent Publication No. 93-4611. However, the above method also involves many problems.

Korean Patent Registration No. 10-0182351 Korean Patent Registration No. 10-0448467 Korean Patent Publication No. 10-2003-0045323

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

A film formed on a two-ply sheet through a blower film extrusion molding machine and a coalescing part was subjected to corona discharge treatment by a corona treatment roll, and then the film was double-coated by a first and second coating part and a drying device, A device for manufacturing a film for a vinyl house using a mesh roll capable of producing a film close to a conventional PO film through a used facility and producing a high-quality non-invasive film with a prolonged life of 2 to 3 years And the like.

In addition, by using a mesh-shaped roller in the coating part, a device for manufacturing a film for a vinyl house using a mesh roll, which is convenient and time-consuming because the medicines are filled smoothly on the surface of the roller, A method is provided.

To achieve the above object, the present invention provides a blower film extrusion molding machine for producing a film on a tube;

A concave portion for folding and folding a film produced as a tube in the blower film extrusion molding machine onto a two-fold sheet by an A-shaped board;

A corona treatment roll for corona discharge treatment of the surface of the film joined by the mixing unit;

A first coating part for subjecting the surface of the corona discharge treated film to a first chemical treatment in the corona treatment roll;

A second coating unit installed at a lower end of the first coating unit and performing a secondary chemical treatment on the opposite side surface of the first chemical treated film in the first coating unit;

A drying unit for drying the chemical by hot air while the coated film is transferred from the second coating unit to the secondary chemical treatment;

And a plurality of rollers guiding the film between the apparatuses when the film is transported between the apparatuses.

The present invention also provides a method for producing a film for a vinyl house,

Extruding the film onto a tube through a blower film extrusion molding machine (S100);

Folding the film extruded on the tube onto a two-ply sheet through a coalescing portion (S200);

(S300) corona discharging the surface of the film folded in two layers through a corona treatment roll;

A step (S400) of coating the corona discharge treated film with a first chemical treatment in a first coating part and coating the first coating part (S400);

(S500) a secondary coating of the first coated film in the first coating portion and a secondary coating of the film in the second coating portion (S500);

(S600) drying the secondarily coated film in the second coating portion by hot air of the drying device while passing through the drying device;

(S700) winding the finished film up to the drying step (S700).

As described above, in the apparatus and method for producing a film for a vinyl house using the mesh roll of the present invention, a film formed on a two-ply sheet through a blower film extrusion molding machine and a coalescing unit is wound on a corona- After the discharge treatment, the film can be produced by a double coating method using the first and second coating portions and the drying apparatus, and a film close to the conventional PO film can be produced through the stabilized equipment. The lifetime of the film is about two to three years It is possible to manufacture a high-quality non-invasive film.

Further, by using a roller in the form of a mesh in the coated portion, the medicines can be smoothly filled on the surface of the roller, and the medicines can be evenly applied to the film.

1 is a schematic view showing an apparatus for producing a film for a greenhouse according to an embodiment of the present invention,
Fig. 2 is an enlarged view showing part A of Fig. 1,
3 is a flowchart illustrating a method for manufacturing a film for a greenhouse according to an embodiment of the present invention.

The present invention has the following features in order to achieve the above object.

The present invention relates to a blower film extruder for producing a film on a tube;

A concave portion for folding and folding a film produced as a tube in the blower film extrusion molding machine onto a two-fold sheet by an A-shaped board;

A corona treatment roll for corona discharge treatment of the surface of the film joined by the mixing unit;

A first coating part for subjecting the surface of the corona discharge treated film to a first chemical treatment in the corona treatment roll;

A second coating unit installed at a lower end of the first coating unit and performing a secondary chemical treatment on the opposite side surface of the first chemical treated film in the first coating unit;

A drying unit for drying the chemical by hot air while the coated film is transferred from the second coating unit to the secondary chemical treatment;

And a plurality of rollers for guiding the film between the apparatuses.

The present invention also provides a method for producing a film for a vinyl house,

Extruding the film onto a tube through a blower film extrusion molding machine (S100);

Folding the film extruded on the tube onto a two-ply sheet through a coalescing portion (S200);

(S300) corona discharging the surface of the film folded in two layers through a corona treatment roll;

A step (S400) of coating the corona discharge treated film with a first chemical treatment in a first coating part and coating the first coating part (S400);

(S500) a secondary coating of the first coated film in the first coating portion and a secondary coating of the film in the second coating portion (S500);

(S600) drying the secondarily coated film in the second coating portion by hot air of the drying device while passing through the drying device;

(S700) winding the finished film up to the drying step (S700).

The present invention having such characteristics can be more clearly described by the preferred embodiments thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing in detail several embodiments of the present invention with reference to the accompanying drawings, it is to be understood that the present invention is not limited to the details of construction and the arrangement of components shown in the following detailed description or illustrated in the drawings will be. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front," "back," "up," "down," "top," "bottom, Expressions and predicates used herein for terms such as "left," " right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation. Also, terms such as " first "and" second "are used herein for the purpose of the description and the appended claims, and are not intended to indicate or imply their relative importance or purpose.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

FIG. 1 is a schematic view showing an apparatus for producing a film for a greenhouse according to an embodiment of the present invention, and FIG. 2 is an enlarged view showing part A of FIG.

As shown in Figs. 1 and 2, the apparatus for producing a film for a vinyl house of the present invention is an apparatus for producing an agricultural film, which comprises extruding a polymer film of a polyolefin (low density polyethylene, linear low density polyethylene, ethylene vinyl acetate copolymer resin) A blown film extrusion molding machine 10 and a film 1 formed on the upper side of the blower film extrusion molding machine 10 in the form of a tube by a blower film extrusion molding machine, Shaped board 21 and a folded portion 20 which is formed on one side of the A-shaped board 21 and joins a folded film on a two-folded sheet. The concave portion 20 And a corona treatment roll 30 for corona discharge treatment on the surface of the film 1 joined by the corona discharge treatment.

A first coating part 40 for performing a first chemical treatment on the surface of the corona discharge treated film 1 in the corona treatment roll 30; A second coating unit 50 installed at a lower end of the first coating unit 40 and performing a secondary chemical treatment on a surface opposite to the first chemical treated film 1 in the first coating unit 40; A drying device 70 for drying the chemical by the hot air while the coated film 1 is transferred from the second coating part 50 to the secondary chemical treatment, And a plurality of roller units 80 for guiding.

The first coating part 40 and the second coating part 50 are provided with a mesh roller 60 for directly contacting the surface of the film 1 and applying the medicine to the surface of the film 1 through rotation, A chemical spray nozzle 61 disposed outside the mesh roller 60 and spraying medicine onto the surface of the mesh roller 60 and a mesh roller 60 spaced apart from the outer surface of the mesh roller 60 by a predetermined distance, A medicament thickness adjusting unit 62 for cutting the medicament sprayed on the surface of the mesh roller 60 to a predetermined thickness, a part of the medicament sprayed on the mesh roller 60 provided at the lower end of the mesh roller 60, And a pedestal (63) for receiving the medicine cut by the cutter (62).

The mesh roller 60 is formed in the shape of a mesh network so that the medicine injected from the medicine spray nozzle 61 is filled on the outer surface of the mesh roller 60. The outer surface of the mesh roller 60 The mesh roller 60 is applied to the surface of the film 1 when the mesh roller 60 rotates.

2, the medicament thickness adjusting unit 62 is spaced apart from the outer surface of the mesh roller 60 by a predetermined distance, and the gap is set to a predetermined thickness of the medicament sprayed on the surface of the mesh roller 60 The medicament thickness regulating portion 62 is driven and the end portion of the medicament thickness regulating portion 62 (the portion corresponding to the mesh roller 60) is formed to be inclined so that the medicament sprayed onto the surface of the mesh roller 60 It is possible to cut smoothly.

The coating liquid (medicine) sprayed onto the first coating part 40 and the second coating part 50 is formed by mixing coating medicine + water in a weight ratio of 1:10, (1), there are various kinds of drugs that water can flow down as water droplets on the surface, so no description is made.

Meanwhile, the drying device 70 may be configured such that the coated film 1 is transferred from the second coating portion 50 to the second chemical treatment, is transferred in the longitudinal direction, dried by hot air, A case 71 which slides left and right so as to surround the case 71; A transfer pipe (72) formed on one end surface of the case (71) to transfer hot air to the inside of the case (71); A blowing fan 73 formed at an end of the conveyance pipe 72 for sucking outside air and conveying the air to one side; And a heat source unit (not shown) formed between the case 71 and the air blowing fan 73 to heat the air conveyed by the air blowing fan 73 and convert it into hot air.

The heat source unit is composed of a heat source, a heat pipe, or the like. The heat source unit may be installed between the blowing fan 73 and the conveyance pipe 72, or may be installed in the case 71, .

Then, the film 1 completed through the drying device 70 is wound on the winding unit 90 and is taken out or stored / stored.

The film 1 is heated and dried by hot air at a temperature of 60 to 100 ° C. At this time, the production speed of the film 1 is 20 to 45 m / min and the moving distance in the drying apparatus 50, 3 m to 15 m.

As described above, the two-stage coating film and the two-stage dried film (1) are packaged and shipped, and thus the agricultural film (1) of the present invention thus obtained has high oiliness (transparency) The scratch resistance is high and the blocking resistance is excellent.

Hereinafter, a method for manufacturing the film 1 by the apparatus for producing a film for a vinyl house described above will be described with reference to the drawings.

3 is a flowchart illustrating a method for manufacturing a film for a greenhouse according to an embodiment of the present invention.

As shown in FIGS. 1 to 3, in the method for producing a film for a vinyl house of the present invention, the film 1 is first extruded through a blower film extrusion molding machine 10 (S100) and extruded The film 1 is folded into a two-fold sheet through the coalescing section 20 (S200)

Then, the film 1 folded in two layers is subjected to corona discharge treatment on the surface through the corona treatment roll 30 (S300), and the film 1 subjected to the corona discharge treatment is applied to the first coating portion 40 (S 500), and the second coating unit 60 is subjected to a second chemical treatment on the opposite side of the film 1 (S 500).

The second coated film 1 in the second coating part 60 is dried by the hot air of the drying device 70 while passing through the drying device 70. In step S700,

Finally, the film (1) up to the drying is wound or folded to be stored or unloaded (S800)

As described above, the film 1 is manufactured through coating with the mesh roller 60 and drying of the drying device 70 to produce a film close to a polyolefin film made in Japan. Thus, an inexpensive, high-quality Agricultural films are produced.

10: blower film extrusion molding machine 20:
21: A-shaped board 30: corona treatment roll
40: first coating part 50: second coating part
60: mesh roller 61: chemical spray nozzle
62: chemical thickness adjusting section 63: pedestal
70: dryer 71: case
72: transfer pipe 73: blowing fan
80: roller portion 90:

Claims (5)

A blower film extrusion molding machine (10) for producing a film on a tube;
A concave portion 20 for folding the film 1 produced in the form of a tube in the blower film extrusion molding machine 10 into a two-fold sheet by an A-shaped board 21;
A corona treatment roll (30) for performing a corona discharge treatment on the surface of the film (1) joined by the mixing unit (20);
A first coating part (40) for subjecting the surface of the corona discharge treated film (1) in the corona treatment roll (30) to a first chemical treatment;
A second coating unit 50 installed at a lower end of the first coating unit 40 and performing a secondary chemical treatment on a surface opposite to the first chemical treated film 1 in the first coating unit 40;
A drying device 70 for drying the chemicals by hot air while the coated film 1 is transferred from the second coating part 50 to the second chemical treatment step;
A plurality of roller portions (80) guiding the film (1) when it is transported between the devices;
Wherein the mesh roll comprises a plurality of mesh rolls.
The method according to claim 1,
The first coating portion 40 and the second coating portion 50 may be formed of a metal,
A mesh roller 60 directly contacting with the surface of the film 1 to apply a medicine to the surface of the film 1 through rotation and forming a surface of the film 1 so as to fill the outer surface of the film 1;
A chemical spray nozzle 61 provided outside the mesh roller 60 for spraying the chemical on the surface of the mesh roller 60;
A chemical thickness adjusting unit (62) that is spaced apart from the outer surface of the mesh roller (60) and cuts the medicine sprayed on the surface of the mesh roller (60) to a predetermined thickness;
A pedestal 63 installed at the lower end of the mesh roller 60 to receive a part of the medicine sprayed on the mesh roller 60 and the medicine cut by the medicine thickness adjusting part 62;
Wherein the mesh roll comprises a plurality of mesh rolls.
The method according to claim 1,
The medicament sprayed onto the first coating part (40) and the second coating part (50) is formed by mixing coating medicine and water in a ratio of 1: 10 by weight. Device.
The drying apparatus (70) according to claim 1, wherein the drying device (70)
The coated film 1 is transferred from the second coating part 50 to the second chemical treatment, and is transported in the longitudinal direction, dried by hot air, and slid left and right to wrap the film 1 A case 71;
A transfer pipe (72) formed on one end surface of the case (71) to transfer hot air to the inside of the case (71);
A blowing fan 73 formed at an end of the conveyance pipe 72 for sucking outside air and conveying the air to one side;
A heat source unit formed between the case 71 and the blowing fan 73 to heat the air conveyed by the blowing fan 73 and convert it into hot air;
Wherein the mesh roll comprises a plurality of mesh rolls.

A method for producing a film for a vinyl house,
Extruding (S100) the film (1) onto the tube through the blower film extrusion molding machine (10);
(S200) folding the film (1) extruded on the tube onto a two-ply sheet through a coalescing section (20);
(S300) corona discharge treatment of the surface of the film (1) folded in two layers through the corona treatment roll (30);
A step (S400) of coating the corona discharge treated film (1) with the first coating part (40) and firstly coating the film (1) with the first coating part (40);
A step (S500) of applying a second chemical treatment to the film (1) coated first in the first coating part (40) and a second coating step (S500) in the second coating part (60);
(S600) drying the secondarily coated film (1) in the second coating portion (60) by hot air of the drying device (70) while passing through the drying device (70);
Winding the finished film (1) up to the drying step (S700);
The method of manufacturing a film for a vinyl house using the mesh roll according to claim 1,

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