KR101156192B1 - Apparatus and method for manufacturing a thin blown film - Google Patents

Abstract

PURPOSE: A thin blown film manufacturing apparatus and method are provided to improve the flow of raw materials and enhance viscosity by controlling the temperature of a cylinder of an extruder according to section. CONSTITUTION: A thin blown film manufacturing apparatus comprises a mixer(100), a hopper(200), an extruder(300), a heater, and a temperature controller. The mixer has a mixing screw for mixing raw materials. The hopper receives the mixed raw materials and has a heat exchanger through which moisture of exterior air is removed. The dehumidified exterior air is used for removing moisture from a dehumidifying agent absorbing moisture from the raw materials so that the dehumidifying agent is recycled. The extruder has a cylinder which is divided into five or more sections in a longitudinal direction. The heater and the temperature controller are installed in each section of the cylinder to individually control the temperature.

Description

Apparatus and method for manufacturing thin film blown film {APPARATUS AND METHOD FOR MANUFACTURING A THIN BLOWN FILM}

The present invention relates to a manufacturing apparatus and a manufacturing method of a thin film blown film. More specifically, the present invention relates to an apparatus and a method for manufacturing a thin film blown film for producing a blown film having a thickness of 15 μm or less.

Most of the expensive waterproof waterproof fabrics such as GOTEREX and SYMPATEX are using laminating method, but in Korea, they are still in the entry stage in terms of production facilities and technology. to be. Currently, the most active technology development in the manufacturing of waterproof breathable fabric is the laminating method. The raw materials for film production are diversified into polyurethane, polyester, polyurethane-ester copolymers, etc., and the film production method is also converted to a mass production method by blowing (Blowung), compared to that produced by conventional release paper coating. In the case of the composite fabric, the reaction type polyurethane hot melt is applied to the use of the solvent type adhesive to improve the adhesive strength, improve the uniformity of the quality, improve the productivity, and solve the environmental problems.

Thin-film blown films with a thickness of 15 micrometers (μm) or less are technologies that can maximize the touch and functionality of the fabric to the maximum. Currently, the demand for expensive moisture-permeable waterproof films such as GOTEREX and SYMPATEX is increasing all over the world, but the total amount of functional films less than 15 micrometers (㎛) used in Korea is currently in Taiwan and Japan. Is dependent on income.

Generally, in the blown film manufacturing apparatus, a polymer material which is a raw material of the blown film is supplied from a hopper, which is transferred, compressed and melted by a screw inside a cylinder of an extruder. The molten polymer melt is molded into a tubular film through a die. When the screw is rotated by the drive motor, the polymer material in the screw is subjected to enormous frictional heat. This heat and the heat supplied from the heater cause the melting of the polymer material. The thermoplastic polymer, which is a raw material of the blown film, has a wide molecular weight distribution and is not only complicated from small to large, but also mixed with various additives.

In general, the moisture-permeable waterproof film is largely divided into four materials. The first is expanded polytetrafluoroethylene (E-PTFE), the film of fluorine resin system, the second is polyester film, and the third is polyurethane is dissolved in solvent and coated on fabric with liquid. Four types are typical materials, such as a film formed by heat and a film which finally melts and extrudes thermoplastic polyurethane.

The melted resin in the cylinder of the extruder passes through a circular die and is extruded in the form of a tube. The hollow cylindrical bubble is introduced into the tube by inflating air and expanding cooling air through the air ring to the outside of the tube. Create a Bubble. At this time, if the width of the film to be obtained is determined, no further air is introduced into the tube. The bubble passes through the guide and is pulled from the nip roller to form a plate-like film. The plate-shaped film is a form in which two layers of film are overlapped, and both ends of the width direction are cut and wound into two layers of film.

At this time, the width of the blown film is determined from the bubble size and when the extrusion amount is constant, the thickness can be adjusted by the nip roller speed.

Such a conventional blown film manufacturing apparatus has a problem due to the generation of microbubbles, grains and pinholes in the produced film when the thin film blown film having a thickness of 15 micrometers (μm) or less is manufactured.

In order to solve this problem, Korean Patent No. 10-0397930 discloses a blown film extruder having a low friction guide plate, but Patent No. 10-0397930 also has a thin film having a thickness of 15 micrometers (μm) or less. There is a problem that is difficult to produce blown film.

The manufacturing apparatus and manufacturing method of the thin film blown film which concerns on this invention are aimed at solving the following subjects.

First, in order to manufacture a thin film blown film having a thickness of 15 micrometers (μm) or less, it is intended to improve dehumidification performance through recycling of a dehumidifying agent.

Secondly, the cylinder temperature of the extruder is adjusted for each zone to improve the flowability of the raw materials and at the same time make the viscosity stronger.

Third, to cut both ends of the produced film using a cutter equipped with a ring knife.

Fourth, to improve the wrinkles of the film cut at both ends by using a wrinkle improvement portion consisting of a plurality of rollers.

The problem to be solved of the present invention is not limited to those mentioned above, other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The apparatus for manufacturing a thin film blown film according to the present invention includes a hopper for supplying a raw material after absorbing moisture of a raw material with a dehumidifying agent, an extruder having a cylinder and a screw for extruding the raw material supplied from the hopper in a molten state, and an extruder. A die that passes through the raw materials in the molten state to be extracted into a tubular film, an air ring that cools the outer surface of the tubular film on the upper outside of the die, a guide that guides the top of the cooled tubular film to narrow, and a tubular film that passes through the guide In the blown film manufacturing apparatus including the nip roller which presses and pulls to become this plate-shaped film, the cutter which cuts both ends of a plate-shaped film, and the winding machine which winds up the cut | disconnected plate-shaped film,

The hopper is preferably supplied with mixed raw materials in a mixer provided with a mixing screw.

In the apparatus for manufacturing a thin film blown film according to the present invention, the hopper is preferably provided with a heat exchanger and regenerates the dehumidifying agent by removing moisture absorbed from the raw material by the dehumidifying agent by using external air from which moisture is removed through the heat exchanger. .

In the apparatus for manufacturing a thin film blown film according to the present invention, the cylinder is divided into five or more zones in the longitudinal direction, it is preferable to have a heater and a temperature control device for each zone so as to adjust the temperature of the cylinder for each zone. Do.

In the apparatus for manufacturing a thin film blown film according to the present invention, the guide includes a guide bar and a plurality of guide rollers rotatably coupled between a pair of parallel guide bars coupled to the frame, the guide bar and the guide roller Is preferably installed to be symmetrical with each other on both sides of the tubular film.

In the apparatus for manufacturing a thin film blown film according to the present invention, the cutting machine is coupled to rotate to the cutting frame and the cutting roller is formed on both sides of the outer circumferential surface, coupled to be rotated to the support coupled to the lifting to the cutting frame and the cutting groove It is coupled to the ring knife and the support portion is inserted into contact with one side and the spring comprises a ring knife in close contact with one side of the cutting groove, both ends of the film in contact with the cutting roller is preferably cut by pressing the ring knife to the cutting groove Do.

In the apparatus for manufacturing a thin film blown film according to the present invention, the apparatus further includes a wrinkle improvement unit including a plurality of rollers coupled to the wrinkle improvement frame so as to unfold wrinkles generated in the plate-like film passing through the cutting machine, and among the plurality of rollers. At least one is preferably formed on the outer peripheral surface of the roller symmetrical in the form of oblique symmetry in the center of the roller.

Method for producing a thin film blown film according to the present invention, by absorbing the moisture of the raw material using a hopper equipped with a dehumidifying agent and supplying the raw material; Extruding the raw material supplied from the hopper into a molten state by using an extruder equipped with a cylinder and a screw; Passing the raw material in the molten state supplied from the extruder using a die to extract the tubular film; Cooling the outer side of the tubular film outside the top of the die using an air ring; Guiding the top of the cooled tubular film to be narrowed using a guide; Pressing and pulling the tubular film passed through the guide using a nip roller to become a plate-shaped film; Cutting both ends of the plate-shaped film using a cutter; In the thin film blown film manufacturing method comprising a; winding the cut film of the plate shape using a winder,

It is preferable to include; supplying the mixed raw material to the hopper using a mixer having a mixing screw.

In the method of manufacturing a thin film blown film according to the present invention, the hopper includes a heat exchanger, and includes regenerating the dehumidifying agent by removing moisture absorbed from the raw material by the dehumidifying agent by using external air from which moisture is removed through the heat exchanger. It is desirable to.

In the method of manufacturing a thin film blown film according to the present invention, the cylinder is divided into five or more zones in the longitudinal direction and provided with a heater and a temperature control device for each zone, thereby further controlling the temperature of the cylinder for each zone. It is preferable to include.

In the method of manufacturing a thin film blown film according to the present invention, the guide includes a guide bar and a plurality of guide rollers rotatably coupled between a pair of parallel guide bars coupled to the frame, the guide bar and the guide roller Is preferably installed to be symmetrical with each other on both sides of the tubular film.

In the manufacturing method of the thin film blown film according to the present invention, the cutting machine is coupled to rotate the cutting frame and the cutting roller is formed on both sides of the outer circumferential surface, coupled to be rotated to the support portion coupled to the lifting to the cutting frame and the cutting groove It is coupled to the ring knife and the support portion is inserted into contact with one side and the spring comprises a ring knife in close contact with one side of the cutting groove, both ends of the film in contact with the cutting roller is preferably cut by pressing the ring knife to the cutting groove Do.

In the manufacturing method of the thin-film blown film according to the present invention, the wrinkle improvement is made of a plurality of rollers coupled to the wrinkle improvement frame, wherein at least one of the plurality of rollers is formed with an oblique convex shape symmetrical from the roller center on the outer peripheral surface of the roller. It is preferable to further include the step of unfolding the wrinkles generated in the plate-like film passed through the cutter using a portion.

Apparatus and method for manufacturing a thin film blown film according to the present invention can expect the following effects.

Dehumidification performance can be improved through recycling of dehumidifying agents to produce thin film blown films with a thickness of 15 micrometers (µm) or less, and the cylinder temperature of the extruder can be adjusted for each zone to improve the flow of raw materials and to increase viscosity It is possible to cut both ends of the produced film using a cutter equipped with a ring knife.

In addition, by using the wrinkle improvement portion consisting of a plurality of rollers can be unfolded wrinkles of the film cut at both ends.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a front view schematically showing an apparatus for manufacturing a thin film blown film according to an embodiment of the present invention.
FIG. 2 is an internal view showing the inside of the mixer of FIG. 1. FIG.
3 is a front view illustrating the hopper of FIG. 1.
4 is an internal view showing the interior of the extruder of FIG.
5 is a side view of the guide and nip roller of FIG.
6 is a perspective view of the cutting machine of FIG. 1.
7 is a partial front view of FIG. 6.
8 is a perspective view of the wrinkle improvement of FIG. 1.
9 is a partial front view of FIG. 8.
10 is a perspective view of the winder of FIG. 1.

Hereinafter, an apparatus and a manufacturing method of a thin film blown film according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, the manufacturing apparatus of the thin film blown film which concerns on this invention is demonstrated. 1 to 10 illustrate an apparatus for manufacturing a thin film blown film according to an embodiment of the present invention.

Thin film blown film manufacturing apparatus according to the present invention is provided with a dehumidifying agent absorbs the moisture of the raw material hopper 200 for supplying the raw material, the cylinder 320 for extruding the raw material supplied from the hopper 200 in a molten state ) Extruder 300 having a screw 340, a die 400 passing through the raw material in the molten state supplied from the extruder 300 and extracted into a tubular film 20, and an upper outer side of the die 400. In the air ring 500 for cooling the outer surface of the tubular film 20, the guide 600 to guide the upper portion of the cooled tubular film 20 to narrow, the tubular film 20 passed through the guide 600 ), The nip roller 700 which is pressed to be a plate-shaped film 20, a cutter 800 for cutting both ends of the plate-shaped film 20, and a winding machine for winding the cut plate-shaped film 20. In the blown film manufacturing apparatus comprising a (1000),

The hopper 200 is characterized in that for receiving the raw materials mixed in the mixer 100 having a mixing screw 120.

In general, the blown film manufacturing apparatus includes a hopper 200, an extruder 300, a die 400, an air ring 500, a guide 600, a nip roller 700, a cutter 800, and a winder 1000. It is composed.

The hopper 200 is a device for supplying the raw material of the blown film (20). As shown in FIG. 2, the raw material is mixed with a polymer material such as polyurethane and an additive in a mixer 100 having a mixing screw 120 and supplied to the hopper 200. The mixing screw 120 is to be mixed evenly to the raw material is driven by a drive motor.

In addition, since the raw material has a property of absorbing moisture, the raw material should be processed after removing moisture absorbed by the raw material using a dehumidifying agent. If moisture is not removed, fine bubbles, granules, pinholes, etc. are generated, resulting in product defects.

As shown in FIG. 3, the hopper 200 may include a heat exchanger 220 to remove moisture of the raw material. The heat exchanger 220 is for regeneration of the dehumidifying agent, and is a device for removing moisture absorbed from the raw material by the dehumidifying agent.

That is, the dehumidifying agent absorbs the moisture absorbed by the raw material, and the heat exchanger 220 removes the moisture of the external air, so that the external air passing through the heat exchanger 220 absorbs the moisture. When passed through the dehumidifying agent, the external air absorbs the moisture of the dehumidifying agent, thereby regenerating the dehumidifying agent.

Therefore, by regenerating the dehumidifying agent using the heat exchanger 220, the dehumidification performance is improved, and the defect of the product is reduced.

As shown in FIG. 4, the extruder 300 is an apparatus for extruding raw materials supplied from the hopper 200 in a molten state, and includes a cylinder 320 and a screw 340 rotating inside the cylinder 320. And a driving unit 360 and a gearbox 380 for transmitting power to the screw 340. That is, the raw material in the form of a solid granule supplied from the hopper 200 is subjected to frictional heat while being compressed when the screw 340 rotates, and receives heat from a heater provided outside the cylinder 320. The raw materials in the state become a molten state.

In addition, the cylinder 320 is divided into five or more zones in the longitudinal direction, and provided with a heater and a temperature control device for each zone to adjust the temperature for each zone. In this way, by finely controlling the temperature in each zone, the dispersion and dissolution of the raw materials can be made more complete.

The die 400 is a circular device that passes through the raw material in the molten state supplied from the extruder 300 and extracts the tubular film 20, and expands by blowing air into the raw material extruded through the die 400 To form a cylindrical bubble.

The air ring 500 is a ring-shaped device for cooling the outer surface of the tubular film 20 on the upper outer side of the die 400, the raw material of the molten state when passing through the die 400 is about 200 Since it is in a state of over ℃, it is strongly adhesive and should be quenched. In order to manufacture the thin film blown film 20, it is preferable to cool the outer surface of the tubular film 20 using a double cooling method.

The die 400 and the air ring 500 is a device generally used in the apparatus for producing a blown film 20, and a detailed description thereof will be omitted.

As shown in FIG. 5, the guide 600 is a device for guiding the upper portion of the tubular film 20 to be narrow, and has a guide bar 620 and a plurality of guide rollers 640 in a substantially '∧' shape in cross section. )

That is, the guide bar 620 is a pair of parallel rods installed in the frame 30 of the thin film blown film manufacturing apparatus, and the rotatably between the pair of parallel guide bars 620 Guide roller 640 is coupled. The guide bar 620 and the guide roller 640 are installed to be symmetrical with each other in an approximately '∧' shape on both sides of the upper portion of the tubular film 20.

In addition, the area along which the tubular film 20 comes into contact with the guide roller 640 increases as the upper side is moved upward along the guide 600, and thus, between the pair of guide bars 620 as the upper side goes upward. The width of the is wider and the length of the guide roller 640 coupled to it is preferably manufactured to be longer.

Therefore, the tubular film 20 cooled by the air ring 500 through the die 400 is narrowed to become a plate shape along the guide 600. The guide 600 also serves to cool the outer surface of the tubular film 20 while the guide roller 640 rotates.

The nip roller 700 is a device that presses and pulls the tubular film 20 having a narrow upper portion through the guide 600 to be a plate-shaped film 20, and is driven by a driving motor 720. The nip roller 700 is also a device generally used in the apparatus for producing a blown film, and a detailed description thereof will be omitted.

As shown in FIGS. 6 to 7, the cutter 800 cuts both ends of the plate-shaped film 20 passing through the nip roller 700 to create a double-ply blown film 20. , The cutting roller 840, the ring knife 880 and the spring 890.

That is, the cutting roller 840 is coupled to be rotated to the cutting frame 820 and the cutting groove 842 is formed on the outer circumferential surface, the ring knife 880 is coupled to be elevated to the cutting frame 820 support ( It is coupled to rotate to 860 and is inserted in contact with one side of the cutting groove 842.

In addition, it is preferable to have a driving motor (not shown) for driving a plurality of rollers provided in the cutter 800 if necessary.

Therefore, both ends of the width direction of the plate-shaped film 20 in contact with the cutting roller 840 are pressed by the ring knife 880 to the cutting groove 842 to cut. That is, one side of the cutting roller 840 and the ring knife 880 is to cut by pressing the plate-like film 20 as if the scissors. And both ends of the plate-like film 20 is removed by winding in a winding roller (not shown) provided separately after being cut by the cutter 800.

In addition, the spring 890 is coupled to the support portion 860 to closely contact the ring knife 880 to one side of the cutting groove 842, the cutting of the plate-shaped film 20 can be made better. To be.

As shown in Figure 8 to 9, the thin film blown film manufacturing apparatus according to the present invention may further include a wrinkle improvement unit (900). The wrinkle improvement unit 900 is a device for unfolding the wrinkles generated in the two-ply blown film 20 passing through the cutting machine 800, a plurality of rollers 940 coupled to the wrinkle improvement frame 920 Is done.

At this time, one or more of the plurality of rollers 940 is formed on the outer circumferential surface of the roller 940 is an oblique convex 942 symmetrical with respect to the center of the roller 940. That is, when the blown film 20 passes through the roller 940 in which the unevenness 942 is formed, the unevenness 942 rotates so as to be widened with respect to the center of the roller 940. The blown film 20 is to be unfolded.

In addition, it is preferable to include a driving motor (not shown) for driving a plurality of rollers provided in the wrinkle improvement unit 900, if necessary, the wrinkle improvement unit 900 is integral with the cutting machine (800). It is also possible to manufacture to be formed in one frame.

As shown in FIG. 10, the blown film 20 unfolded through the wrinkle improvement unit 900 is wound around the winder 1000. The winding machine 1000 is composed of a plurality of winding rollers, a device that is generally used in the apparatus for producing blown film, a detailed description thereof will be omitted.

Hereinafter, a method for manufacturing a thin film blown film according to the present invention will be described.

The description overlapping with the above-described thin film blown film production apparatus according to the present invention will be omitted, and will be described based on the difference.

According to the present invention, a method of manufacturing a thin film blown film may include: supplying the raw material after absorbing moisture from the raw material using a hopper 200 provided with a dehumidifying agent; Extruding the raw material supplied from the hopper 200 in a molten state by using an extruder 300 having a cylinder 320 and a screw 340; Passing the raw material in the molten state supplied from the extruder 300 using a die 400 to extract the tubular film 20; Cooling the outer surface of the tubular film (20) at the upper outer side of the die (400) using an air ring (500); Guiding the upper portion of the cooled tubular film 20 to be narrowed by using a guide 600; Pressing and pulling the tubular film 20 which has passed through the guide 600 using the nip roller 700 to be a plate-shaped film 20; Cutting both ends of the plate-shaped film 20 using a cutter 800; And winding the cut plate-like film 20 by using a winding machine 1000.

And supplying the mixed raw materials to the hopper 200 by using the mixer 100 having the mixing screw 120.

That is, the method for manufacturing a thin film blown film according to the present invention includes supplying raw materials, extruding the raw materials in a molten state, extracting the tubular film 20, and cooling the outer surface of the tubular film 20. In the step, the upper portion of the tubular film 20 to guide the narrowing, the pressing to pull the plate-like film 20, cutting the both ends of the plate-like film 20 and winding the film 20 The present invention relates to a method for manufacturing a thin film blown film, the method comprising: supplying a mixed raw material to the hopper 200 using a mixer 100 having a mixing screw 120. By using the mixing screw 120 to mix the raw materials evenly to be supplied to the hopper 200, it is possible to produce a product of excellent quality.

In addition, in the method for manufacturing a thin film blown film according to the present invention, the hopper 200 includes a heat exchanger 220, and the dehumidifying agent is a raw material using external air from which moisture is removed through the heat exchanger 220. Regenerating the dehumidifying agent by removing the moisture absorbed from it. That is, by regenerating the dehumidifying agent using the heat exchanger 220, the defect of the product is reduced, including the step of improving the dehumidifying performance.

In addition, the method for manufacturing a thin film blown film according to the present invention includes a plurality of rollers 940 coupled to the wrinkle improvement frame 920, and at least one of the plurality of rollers 940 is a roller on an outer circumferential surface of the roller 940. (940) further comprising the step of unfolding the wrinkles generated in the plate-like film 20 passed through the cutter 800 by using the wrinkle improvement portion 900 is formed with an oblique concave-convex 942 symmetrical in the center; Can be. That is, when the blown film 20 passes through the roller 940 in which the unevenness 942 is formed, the unevenness 942 rotates so as to be widened with respect to the center of the roller 940. It is possible to improve the quality of the product including the step of unfolding the blown film (20).

As described above, when the apparatus and method for manufacturing the thin film blown film according to the present invention are performed, the thin film blown film having a thickness of 15 micrometers (μm) or less can be manufactured while improving the conventional problems.

What has been described above is only some embodiments for carrying out the apparatus and method for producing a thin film blown film according to the present invention, the present invention is not limited to the above-described embodiment, as claimed in the following claims As described above, any person having ordinary knowledge in the field of the present invention without departing from the gist of the present invention has the technical spirit of the present invention to the extent that various modifications can be made.

20: film 30: frame
100: mixer 120: mixing screw
200: hopper 220: heat exchanger
300: extruder 320: cylinder
340: screw 360: drive unit
380: gearbox 400: die
500: air ring 600: guide
620: guide bar 640: guide roller
700: nip roller 720: drive motor
800: cutting machine 820: cutting frame
840: cutting roller 842: cutting groove
860: support 880: ring knife
890: spring 900: wrinkle improvement
920: wrinkle improvement frame 940: roller
942: unevenness 1000: winding machine

Claims (12)

It is provided with a dehumidifying agent to absorb the moisture of the raw material and to pass the hopper for supplying the raw material, an extruder having a cylinder and screw for extruding the raw material supplied from the hopper in the molten state, the raw material in the molten state supplied from the extruder A die for extraction into a tubular film, an air ring for cooling the outer surface of the tubular film at the upper outer side of the die, a guide for guiding the upper portion of the cooled tubular film to narrow, a tubular film passing through the guide In the blown film manufacturing apparatus comprising a nip roller to be pressed to pull, a cutter for cutting both ends of the plate-shaped film and a winding machine for winding the cut plate-shaped film,
The hopper is supplied with raw materials mixed in a mixer with a mixing screw,
The hopper is provided with a heat exchanger, the thin film blown film manufacturing apparatus characterized in that for regenerating the dehumidifying agent by removing the moisture absorbed by the dehumidifying agent from the raw material by using the external air removed through the heat exchanger. delete The method of claim 1,
The cylinder is divided into five or more zones in the longitudinal direction, the thin film blown film manufacturing apparatus characterized in that it comprises a heater and a temperature control device for each zone to adjust the temperature of the cylinder for each zone. The method of claim 1,
The guide includes a pair of parallel guide bars coupled to the frame and a plurality of guide rollers rotatably coupled between the guide bars, and the guide bars and the guide rollers are installed to be symmetrical with each other on both sides of the tubular film. Thin film blown film production apparatus characterized in that the. The method of claim 1,
The cutting machine is coupled to rotate the cutting frame and the cutting roller is formed on both sides of the outer circumferential surface, the ring knife is coupled to rotate to the support portion coupled to be elevated to the cutting frame and inserted into contact with one side of the cutting groove and the And a spring coupled to the support part to closely contact the ring knife to one side of the cutting groove, wherein both ends of the film in contact with the cutting roller press and cut the ring knife to the cutting groove. Film manufacturing equipment. The method of claim 1,
It further comprises a wrinkle improvement portion consisting of a plurality of rollers coupled to the wrinkle improvement frame so that the wrinkles generated in the plate-like film passing through the cutting machine, one or more of the plurality of rollers are diagonally symmetrical at the roller center on the outer peripheral surface of the roller Thin film blown film manufacturing apparatus characterized in that the irregularities are formed. Supplying the raw material after absorbing moisture of the raw material using a hopper provided with a dehumidifying agent; Extruding the raw material supplied from the hopper into a molten state by using an extruder equipped with a cylinder and a screw; Extracting into a tubular film by passing the raw material in the molten state supplied from the extruder using a die; Cooling an outer surface of the tubular film on the upper outer side of the die using an air ring; Guiding the upper portion of the cooled tubular film to be narrowed using a guide; Pressing and pulling the tubular film passing through the guide to form a plate-like film using a nip roller; Cutting both ends of the plate-shaped film by using a cutter; And winding the cut plate-shaped film using a winding machine.
Supplying the mixed raw materials to the hopper using a mixer having a mixing screw;
The hopper includes a heat exchanger, and regenerating the dehumidifying agent by removing the moisture absorbed from the raw material by the dehumidifying agent by using the external air through which the water is removed through the heat exchanger; thin film blown film comprising a Manufacturing method. delete The method of claim 7, wherein
The cylinder is divided into five or more zones in the longitudinal direction and provided with a heater and a temperature control device for each zone, further comprising the step of adjusting the temperature of the cylinder for each zone characterized in that the thin film blown film manufacturing method . The method of claim 7, wherein
The guide includes a pair of parallel guide bars coupled to the frame and a plurality of guide rollers rotatably coupled between the guide bars, and the guide bars and the guide rollers are installed to be symmetrical with each other on both sides of the tubular film. Thin film blown film manufacturing method characterized in that it is. The method of claim 7, wherein
The cutting machine is coupled to rotate the cutting frame and the cutting roller is formed on both sides of the outer circumferential surface, the ring knife is coupled to rotate to the support portion coupled to be elevated to the cutting frame and inserted into contact with one side of the cutting groove and the And a spring coupled to the support part to closely contact the ring knife to one side of the cutting groove, wherein both ends of the film in contact with the cutting roller press and cut the ring knife to the cutting groove. Film manufacturing method. The method of claim 7, wherein
It is composed of a plurality of rollers coupled to the wrinkle improvement frame and one or more of the plurality of rollers are generated in the plate-like film passed through the cutter by using a wrinkle improvement portion is formed on the outer peripheral surface of the roller symmetrical diagonally symmetrical shape Thin film blown film manufacturing method comprising the step of further extending the wrinkles.

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