A processing device for ultra-soft, comfortable, elastic and breathable film and a method for using the same

Abstract

The present invention discloses a processing device for a super soft, comfortable, elastic, breathable film and a method for using the same, which relates to the technical field of breathable film processing equipment, and includes an extrusion table for extruding plastic particles and a cooling table for cooling. An extruder is installed above the extrusion table, a heating electric furnace is installed on the surface of the extruder, an extrusion mold is installed on the side of the extruder away from the first motor, a protective cover is installed on the surface of the blow molding machine, a first cooling mechanism is installed on the side above the cooling table, and a processing table is installed on the side of the cooling table away from the extrusion table. The processing device for a super soft, comfortable, elastic, breathable film uses heat exchange to cool the breathable film, thereby preventing the breathable film from being stained with moisture, eliminating the drying step, and at the same time fully preheating and stirring the plastic particles to avoid the generation of bubbles, thereby improving the yield of the breathable film.

Description

Technical Field

[0001] The invention relates to the technical field of breathable film processing equipment, and in particular to a processing equipment for a super-soft, comfortable and elastic breathable film and a use method thereof. Background Art

[0002] Breathable membrane (breathing paper) is a new type of polymer waterproof material. In terms of production technology, the technical requirements of waterproof breathable membrane are much higher than those of general waterproof materials. Breathable membrane is mainly used in steel and wooden structures in the construction field.

[0003] There are many breathable membrane production technologies now, but the structural devices are relatively complex, resulting in substandard quality of the breathable membrane produced. In the actual production process, the plastic particles are heated unevenly, resulting in bubbles in the breathable membrane produced. When cooling the breathable membrane, water cooling is generally used, which requires drying the breathable membrane and destroys the internal structure. To address the above problems, we have carried out technological innovation based on the existing technology and proposed a processing equipment for ultra-soft, comfortable and elastic breathable membrane and its use method. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a processing device for an ultra-soft, comfortable, elastic and breathable membrane and a method for using the same, which solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a processing equipment for an ultra-soft, comfortable, elastic and breathable membrane, comprising an extrusion table for extruding plastic particles and a cooling table for cooling, an extruder is installed above the extrusion table, and a first motor is installed on one side of the extruder, a heating electric furnace is installed on the surface of the extruder, and a preheating box is installed above the extruder, an extrusion mold is installed on the side of the extruder away from the first motor, and a blow molding machine is installed on one side of the extrusion mold, a protective cover is installed on the surface of the blow molding machine, a first cooling mechanism is installed on one side above the cooling table, and a second cooling mechanism is installed on the other side above the cooling table, while the cooling table is located on one side of the extrusion table, and a processing table is installed on the side of the cooling table away from the extrusion table.

[0006] Furthermore, a first extrusion screw and a second extrusion screw are installed on one side of the interior of the extruder chassis, and the first extrusion screw and the second extrusion screw are meshed with each other, an extrusion channel is installed on the other side of the interior of the extruder chassis, and a vibrating rod is installed on the surface of the extrusion channel, a sealing ring is installed on one side of the extrusion channel, and a mold interface is installed inside the sealing ring.

[0007] Furthermore, a feed port is provided above the preheating box, and a feed box is installed above the interior of the preheating box, and a damping plate is installed inside the feed box, and heating plates are installed on both sides of the preheating box.

[0008] Furthermore, a first stirring roller and a second stirring roller are installed inside the box body of the preheating box, and the first stirring roller and the second stirring roller are grouped in two, and rotating shafts are installed on both sides of each group of first stirring rollers and each group of second stirring rollers, a transmission belt is connected between the two rotating shafts, and a second motor is installed at one end of the transmission belt, and a connecting pipe is installed at the bottom of the preheating box.

[0009] Furthermore, the cooling platform is a "V"-shaped structure, the first cooling mechanism and the second cooling mechanism have the same structure, and the angle formed between the first cooling mechanism and the second cooling mechanism is the same as the angle of the "V"-shaped structure of the cooling platform.

[0010] Furthermore, the first cooling mechanism includes multiple upper cooling rollers and multiple lower cooling rollers, and the upper and lower cooling rollers and lower cooling rollers on a vertical line form a group, and water pipes are connected between the upper cooling rollers and the lower cooling rollers, and a support column is installed under the lower cooling roller.

[0011] Furthermore, the upper cooling roller and the lower cooling roller have the same structure, and a cooling pipe is installed inside the upper cooling roller, and the cooling pipe is an "S" shaped structure, a water inlet is installed on one side of the upper cooling roller, and a water outlet is installed on the other side of the upper cooling roller, and the water inlet of the upper cooling roller of the same group is connected to the water outlet of the lower cooling roller.

[0012] Furthermore, a spray box is installed on one side above the processing table, and two groups of opposing spray rollers are installed inside the spray box, a spray head is installed on the surface of the spray roller, a fan is installed on one side of the spray box, and a winding roller is installed on one side of the fan, and a third motor is installed inside the winding roller.

[0013] Furthermore, a method for using a processing device for an ultra-soft, comfortable, elastic, breathable membrane comprises the following steps:

[0014] Step 1: First, the plastic particles are placed into the preheating box through the feed port for preheating. At this time, the heating plate provides a heat source for the preheating box. The plastic particles first enter the feed box in the preheating box. The plastic particles are blocked by the damping plate in the feed box so that they enter the box body of the preheating box in turn. At the same time, the second motor drives the first stirring roller and the second stirring roller to rotate through the transmission belt and the rotating shaft respectively. The first stirring roller and the second stirring roller stir the plastic particles, and then the plastic particles enter the extruder from the preheating box through the connecting pipe;

[0015] Step 2: The first motor drives the first extrusion screw and the second extrusion screw inside the extruder to perform extrusion, and the heating electric furnace provides heat for the extruder. After the plastic particles are molten inside the extruder, they pass through the extrusion channel and the mold interface into the extrusion mold for extrusion, and the vibrating rod vibrates the molten plastic inside the extrusion channel;

[0016] Step 3: The plastic passes through the extrusion die and enters the blow molding machine for blow molding to form a film. At this time, the protective cover protects the formed film, and then Harima enters the cooling table for cooling;

[0017] Step 4: The film passes between the upper cooling roller and the lower cooling roller, and the water pipes inside the upper cooling roller and the lower cooling roller are filled with coolant to cool the film;

[0018] Step 5: The film passes through a spray roller and a spray head to spray the liquid on the surface of the film to treat the film, then passes through a fan to air dry, and finally passes through a winding roller to reel up, and the third motor provides power for the winding roller.

[0019] The present invention provides a processing device for a super soft, comfortable, elastic and breathable film and a method for using the same, which have the following beneficial effects:

[0020] The processing equipment of the ultra-soft, comfortable and elastic breathable film adopts heat exchange to cool the breathable film, thereby preventing the breathable film from being stained with water, eliminating the drying step, and at the same time fully preheating and stirring the plastic particles to avoid the generation of bubbles, thereby improving the yield of the breathable film;

[0021] The film of the processing equipment of the ultra-soft, comfortable, elastic and breathable film passes between the upper cooling roller and the lower cooling roller, and the water pipes inside the upper cooling roller and the lower cooling roller are filled with coolant to cool the film. Since the cooling pipe is an "S"-shaped structure, the water inlet of the upper cooling roller of the same group is connected with the water outlet of the lower cooling roller, so that more cooling pipes can be placed inside the upper cooling roller and the lower cooling roller to increase the cooling effect. At the same time, since the cooling table is a "V"-shaped structure, and the angle formed between the first cooling mechanism and the second cooling mechanism is the same as the angle of the "V"-shaped structure of the cooling table, the time of the film between the upper cooling roller and the lower cooling roller can be increased without increasing the horizontal length of the equipment, thus saving the installation space of the equipment.

[0022] When the plastic particles are inside the preheating box, they first enter the feed box, and then are blocked by the damping plate inside the feed box so that the plastic particles enter the box body of the preheating box in turn, slowing down the speed of the plastic particles falling in the feed box so that the time of the plastic particles in the preheating box is increased, so that the plastic particles are heated more evenly. At the same time, the second motor drives the first stirring roller and the second stirring roller to rotate through the transmission belt and the rotating shaft respectively, and the first stirring roller and the second stirring roller stir the plastic particles so that the plastic particles are heated more evenly. Then the plastic particles enter the interior of the extruder from the preheating box through the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a processing device for a super soft, comfortable, elastic and breathable membrane of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of an extruder of a processing device for a super-soft, comfortable, elastic and breathable membrane of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of a preheating box of a processing device for a super-soft, comfortable, elastic and breathable membrane of the present invention;

[0026] Figure 4 A schematic diagram of the internal structure of an upper cooling roller of a processing device for a super-soft, comfortable, elastic and breathable film according to the present invention;

[0027] Figure 5 The present invention is a schematic diagram of the side structure of an upper cooling roller of a processing device for a super-soft, comfortable, elastic and breathable membrane.

[0028] In the figure: 1, extrusion table; 2, extruder; 201, first extrusion screw; 202, second extrusion screw; 203, extrusion channel; 204, vibrating rod; 205, sealing ring; 206, mold interface; 3, first motor; 4, heating furnace; 5, preheating box; 501, feed port; 502, feed box; 503, damping plate; 504, heating plate; 505, first stirring roller; 506, second stirring roller; 507, rotating shaft; 508, transmission belt; 509, first Second electric motor; 510, connecting pipe; 6, extrusion mold; 7, blow molding machine; 8, protective cover; 9, cooling table; 10, first cooling mechanism; 11, second cooling mechanism; 12, upper cooling roller; 1201, water inlet; 1202, water outlet; 1203, cooling pipe; 13, lower cooling roller; 14, water pipe; 15, supporting column; 16, processing table; 17, spray box; 18, spray roller; 19, spray head; 20, fan; 21, winding roller; 22, third electric motor. DETAILED DESCRIPTION

[0029] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] like Figure 1-Figure 5 As shown, the present invention provides a technical solution: a processing equipment for an ultra-soft, comfortable, elastic and breathable membrane, comprising an extrusion table 1 for extruding plastic particles and a cooling table 9 for cooling, an extruder 2 is installed above the extrusion table 1, and a first motor 3 is installed on one side of the extruder 2, a heating electric furnace 4 is installed on the surface of the extruder 2, and a preheating box 5 is installed above the extruder 2, an extrusion mold 6 is installed on the side of the extruder 2 away from the first motor 3, and a blow molding machine 7 is installed on one side of the extrusion mold 6, a protective cover 8 is installed on the surface of the blow molding machine 7, a first cooling mechanism 10 is installed on one side above the cooling table 9, and a second cooling mechanism 11 is installed on the other side above the cooling table 9, and the cooling table 9 is located on one side of the extrusion table 1, and a processing table 16 is installed on the side of the cooling table 9 away from the extrusion table 1.

[0031] A first extrusion screw 201 and a second extrusion screw 202 are installed on one side of the chassis of the extruder 2, and the first extrusion screw 201 and the second extrusion screw 202 are meshed with each other. An extrusion channel 203 is installed on the other side of the chassis of the extruder 2, and a vibrating rod 204 is installed on the surface of the extrusion channel 203. A sealing ring 205 is installed on one side of the extrusion channel 203, and a mold interface 206 is installed inside the sealing ring 205.

[0032] A feed port 501 is provided above the preheating box 5 , and a feed box 502 is installed above the interior of the preheating box 5 , while a damping plate 503 is installed inside the feed box 502 , and heating plates 504 are installed on both sides of the preheating box 5 .

[0033] A first stirring roller 505 and a second stirring roller 506 are installed inside the box body of the preheating box 5, and the first stirring roller 505 and the second stirring roller 506 are grouped in two, and a rotating shaft 507 is installed on both sides of each group of first stirring rollers 505 and each group of second stirring rollers 506, a transmission belt 508 is connected between the two rotating shafts 507, and a second motor 509 is installed at one end of the transmission belt 508, and a connecting pipe 510 is installed at the bottom of the preheating box 5.

[0034] The cooling stage 9 is a “V” shaped structure, the first cooling mechanism 10 and the second cooling mechanism 11 have the same structure, and the angle formed between the first cooling mechanism 10 and the second cooling mechanism 11 is the same as the angle of the “V” shaped structure of the cooling stage 9.

[0035] The first cooling mechanism 10 includes a plurality of upper cooling rollers 12 and a plurality of lower cooling rollers 13, and two upper cooling rollers 12 and lower cooling rollers 13 on a vertical line form a group, and a water pipe 14 is connected between the upper cooling rollers 12 and the lower cooling rollers 13, and a support column 15 is installed under the lower cooling roller 13.

[0036] The upper cooling roller 12 and the lower cooling roller 13 have the same structure, and a cooling pipe 1203 is installed inside the upper cooling roller 12, and the cooling pipe 1203 is an "S"-shaped structure, a water inlet 1201 is installed on one side of the upper cooling roller 12, and a water outlet 1202 is installed on the other side of the upper cooling roller 12, and the water inlet 1201 of the upper cooling roller 12 of the same group is connected to the water outlet 1202 of the lower cooling roller 13.

[0037] A spray box 17 is installed on one side above the processing table 16, and two sets of opposite spray rollers 18 are installed inside the spray box 17, and a spray head 19 is installed on the surface of the spray roller 18. A fan 20 is installed on one side of the spray box 17, and a winding roller 21 is installed on one side of the fan 20, and a third motor 22 is installed inside the winding roller 21.

[0038] A method for using a processing device for an ultra-soft, comfortable, elastic, breathable membrane, the method comprising the following steps:

[0039] Step 1: First, the plastic particles are placed into the preheating box 5 through the feed port 501 for preheating. At this time, the heating plate 504 provides a heat source for the preheating box 5. The plastic particles first enter the feed box 502 in the preheating box 5. The damping plate 503 in the feed box 502 blocks the plastic particles and allows them to enter the box body of the preheating box 5 in sequence. The speed at which the plastic particles fall in the feed box 502 is slowed down, which increases the time the plastic particles spend in the preheating box 5, making the plastic particles heated more evenly. At the same time, the second motor 509 drives the first stirring roller 505 and the second stirring roller 506 to rotate through the transmission belt 508 and the rotating shaft 507, respectively. The first stirring roller 505 and the second stirring roller 506 stir the plastic particles, making the plastic particles heated more evenly. Then, the plastic particles enter the extruder 2 from the preheating box 5 through the connecting pipe 510.

[0040] Step 2: The first motor 3 drives the first extrusion screw 201 and the second extrusion screw 202 inside the extruder 2 to perform extrusion, and the heating electric furnace 4 provides heat for the extruder 2. After the plastic particles are molten inside the extruder 2, they pass through the extrusion channel 203 and the mold interface 206 and enter the extrusion mold 6 for extrusion. At the same time, the vibration rod 204 vibrates the molten plastic inside the extrusion channel 203 to prevent air from being mixed into the plastic.

[0041] Step 3: The plastic passes through the extrusion die 6 and enters the blow molding machine 7 for blow molding to form a film. At this time, the protective cover 8 protects the formed film, and then the Harima enters the cooling table 9 for cooling;

[0042] Step 4: The film passes between the upper cooling roller 12 and the lower cooling roller 13, and the water pipes 14 inside the upper cooling roller 12 and the lower cooling roller 13 are filled with coolant to cool the film. Since the cooling pipe 1203 is an "S"-shaped structure, the water inlet 1201 of the upper cooling roller 12 of the same group is connected with the water outlet 1202 of the lower cooling roller 13, so that more cooling pipes 1203 can be placed inside the upper cooling roller 12 and the lower cooling roller 13 to increase the cooling effect. At the same time, since the cooling table 9 is a "V"-shaped structure, and the angle formed between the first cooling mechanism 10 and the second cooling mechanism 11 is the same as the angle of the "V"-shaped structure of the cooling table 9, the time of the film between the upper cooling roller 12 and the lower cooling roller 13 can be increased without increasing the horizontal length of the equipment, thereby saving the installation space of the equipment.

[0043] Step 5: The film passes through the spray roller 18 and the spray head 19 to spray the liquid on the surface of the film, then passes through the fan 20 to be air-dried, and finally passes through the winding roller 21 to be wound up, and the third motor 22 provides power for the winding roller 21.

[0044] In summary, if Figure 1-5 As shown, the processing equipment and the use method of the ultra-soft, comfortable, elastic and breathable membrane are shown in FIG. 5 . When in use, the plastic particles are first placed into the preheating box 5 through the feed port 501 for preheating. At this time, the heating plate 504 provides a heat source for the preheating box 5. The plastic particles first enter the feed box 502 in the preheating box 5. The damping plate 503 in the feed box 502 blocks the plastic particles so that the plastic particles enter the box body of the preheating box 5 in sequence, slowing down the speed at which the plastic particles fall in the feed box 502 so that the time the plastic particles spend in the preheating box 5 increases, so that the plastic particles are heated more evenly. At the same time, the second motor 509 drives the first stirring roller 505 and the second stirring roller 506 to rotate through the transmission belt 508 and the rotating shaft 507 respectively. The first stirring roller 505 and the second stirring roller 506 stir the plastic particles so that the plastic particles are heated more evenly. Then, the plastic particles enter the extruder 2 from the preheating box 5 through the connecting pipe 510.

[0045] The first motor 3 drives the first extrusion screw 201 and the second extrusion screw 202 inside the extruder 2 to perform extrusion, and the heating electric furnace 4 provides heat for the extruder 2. After the plastic particles are molten inside the extruder 2, they pass through the extrusion channel 203 and the mold interface 206 and enter the extrusion mold 6 for extrusion. At the same time, the vibration rod 204 vibrates the molten plastic inside the extrusion channel 203 to prevent air from being mixed into the plastic.

[0046] The plastic passes through the extrusion die 6 and enters the blow molding machine 7 for blow molding to form a film. At this time, the protective cover 8 protects the formed film, and then the plastic enters the cooling table 9 for cooling;

[0047] The film passes between the upper cooling roller 12 and the lower cooling roller 13, and the water pipes 14 inside the upper cooling roller 12 and the lower cooling roller 13 are filled with coolant to cool the film. Since the cooling pipe 1203 is an "S"-shaped structure, the water inlet 1201 of the upper cooling roller 12 of the same group is connected with the water outlet 1202 of the lower cooling roller 13, so that more cooling pipes 1203 can be placed inside the upper cooling roller 12 and the lower cooling roller 13 to increase the cooling effect. At the same time, since the cooling table 9 is a "V"-shaped structure, and the angle formed between the first cooling mechanism 10 and the second cooling mechanism 11 is the same as the angle of the "V"-shaped structure of the cooling table 9, the time of the film between the upper cooling roller 12 and the lower cooling roller 13 can be increased without increasing the horizontal length of the equipment, thereby saving the installation space of the equipment.

[0048] The film passes through the spray roller 18 and the spray head 19 to spray the liquid on the surface of the film, then passes through the fan 20 to be air-dried, and finally passes through the winding roller 21 to be wound up, and the third motor 22 provides power for the winding roller 21.

[0049] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A processing device for an ultra-soft, comfortable, elastic and breathable film, comprising an extrusion table (1) for extruding plastic particles and a cooling table (9) for cooling, characterized in that: An extruder (2) is installed above the extrusion table (1), and a first motor (3) is installed on one side of the extruder (2); a heating electric furnace (4) is installed on the surface of the extruder (2), and a preheating box (5) is installed above the extruder (2); an extrusion mold (6) is installed on the side of the extruder (2) away from the first motor (3), and a blow molding machine (7) is installed on one side of the extrusion mold (6); a protective cover (8) is installed on the surface of the blow molding machine (7); a first cooling mechanism (10) is installed on one side above the cooling table (9), and a second cooling mechanism (11) is installed on the other side above the cooling table (9); and the cooling table (9) is located on one side of the extrusion table (1), and the cooling table (9) is away from the extrusion table. A processing table (16) is installed on one side of the extruder (1), a first extrusion screw (201) and a second extrusion screw (202) are installed on one side of the casing of the extruder (2), and the first extrusion screw (201) and the second extrusion screw (202) are meshed with each other, an extrusion channel (203) is installed on the other side of the casing of the extruder (2), and a vibration rod (204) is installed on the surface of the extrusion channel (203), a sealing ring (205) is installed on one side of the extrusion channel (203), and a mold interface (206) is installed inside the sealing ring (205), a feed port (501) is arranged above the preheating box (5), and a feed box (502) is installed above the preheating box (5), and the feed box (203) is installed at the same time. 502) is installed with a damping plate (503), both sides of the preheating box (5) are installed with heating plates (504), the box body of the preheating box (5) is installed with a first stirring roller (505) and a second stirring roller (506), and the first stirring roller (505) and the second stirring roller (506) are grouped in two, and both sides of each group of first stirring rollers (505) and each group of second stirring rollers (506) are installed with a rotating shaft (507), a transmission belt (508) is connected between the two rotating shafts (507), and a second motor (509) is installed at one end of the transmission belt (508), a connecting pipe (510) is installed below the preheating box (5), the cooling table (9) is a "V"-shaped structure, and the The first cooling mechanism (10) and the second cooling mechanism (11) have the same structure, and the angle formed between the first cooling mechanism (10) and the second cooling mechanism (11) is the same as the angle of the "V"-shaped structure of the cooling table (9), the first cooling mechanism (10) comprises a plurality of upper cooling rollers (12) and a plurality of lower cooling rollers (13), and the upper and lower cooling rollers (12) and lower cooling rollers (13) on a vertical line form a group, and a water pipe (14) is connected between the upper cooling roller (12) and the lower cooling roller (13), and a support column (15) is installed below the lower cooling roller (13), the upper cooling roller (12) and the lower cooling roller (13) have the same structure, and a cooling pipe (1203) is installed inside the upper cooling roller (12),Furthermore, the cooling pipe (1203) is an "S"-shaped structure, a water inlet (1201) is installed on one side of the upper cooling roller (12), and a water outlet (1202) is installed on the other side of the upper cooling roller (12), and the water inlet (1201) of the upper cooling roller (12) of the same group is connected to the water outlet (1202) of the lower cooling roller (13).

2. The processing equipment of the ultra-soft, comfortable, elastic and breathable membrane according to claim 1, characterized in that: A spray box (17) is installed on one side above the processing table (16), and two groups of opposing spray rollers (18) are installed inside the spray box (17), and spray heads (19) are installed on the surfaces of the spray rollers (18). A fan (20) is installed on one side of the spray box (17), and a winding roller (21) is installed on one side of the fan (20), and a third motor (22) is installed inside the winding roller (21).

3. A method for using the processing equipment of a super soft, comfortable, elastic and breathable membrane according to any one of claims 1 to 2, characterized in that: The method of use comprises the following steps: Step 1: First, plastic particles are placed into the interior of the preheating box (5) through the feed port (501) for preheating. At this time, the heating plate (504) provides a heat source for the preheating box (5). When in the preheating box (5), the plastic particles first enter the interior of the feed box (502). In the feed box (502), the plastic particles are blocked by the damping plate (503) so that they enter the interior of the preheating box (5) in sequence. At the same time, the second motor (509) drives the first stirring roller (505) and the second stirring roller (506) to rotate through the transmission belt (508) and the rotating shaft (507), respectively. The first stirring roller (505) and the second stirring roller (506) stir the plastic particles. Then, the plastic particles enter the interior of the extruder (2) from the preheating box (5) through the connecting pipe (510); Step 2: The first motor (3) drives the first extrusion screw (201) and the second extrusion screw (202) inside the extruder (2) to perform extrusion, while the heating electric furnace (4) provides heat to the extruder (2). After the plastic particles are molten inside the extruder (2), they pass through the extrusion channel (203) and the mold interface (206) and enter the extrusion mold (6) for extrusion, while the vibration rod (204) vibrates the molten plastic inside the extrusion channel (203); Step 3: The plastic passes through the extrusion die (6) and enters the blow molding machine (7) for blow molding to form a film. At this time, the protective cover (8) protects the formed film, and then the plastic enters the cooling table (9) for cooling; Step 4: the film passes between an upper cooling roller (12) and a lower cooling roller (13), and a cooling liquid is placed in the water pipes (14) inside the upper cooling roller (12) and the lower cooling roller (13) to cool the film; Step 5: The film passes through a spray roller (18) and a spray head (19) to spray a liquid on the surface of the film, then passes through a fan (20) for air drying, and finally passes through a winding roller (21) for winding. The third motor (22) provides power for the winding roller (21).

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