| 1. | Complex/multilayered film (10a) or singlelayered film (10b, 10c), colored or not colored, made out of various materials A manufacturing device of film for vacuum packaging and the film itself that does the following: Installs sufficient amount of guiding rollers to transfer the films to the heating roller (20); Melts layers with a low melting point to a jelly state as soon as complex/ multilayered film (10a) or singlelayered films (10a, 10b, 10c) are transferred to the heating roller (20) heated to a set temperature by the heater; *Presses the film that has been transferred in a jelly state while it passes through the heating roller (20) and cooling roller (30) carved with various images (patterns, letters, pictures, logos); Embosses various images (patterns, images, letters, lines) on the film; And manufactures film (11) for vacuum packaging with even thickness, clear embossing and high transparency. |
| 2. | In clause 1, a device that manufactures clear and transparent film by the following: Preventing the film surface that contacts the heating roller (20) from sticking to the heating roller (20) by using the melting point of the surface which is relatively higher than other layers; and Preventing residues from sticking to the cooling roller (30) by embossing the images of the cooling roller on the melted film and cooling it as soon as the melted film contacts the cooling roller (30). |
| 3. | In clause 1, a manufacturing device of film for vacuum packaging that does the following; Coats the abovementioned heating roller (20) with Teflon to prevent film melted by heating roller (20) from sticking to the heating roller (20), even if all layers of the film are melted; and Uses a cooling roller on both sides to simultaneously press and cool the film transferred from the heating roller. |
| 4. | In clause 1, a manufacturing device of film for vacuum packaging that uses a cooling roller; Cooled by air or water; And has patterns, images, lines, and letters carved along the outer surface as bulgy and hollow projections. |
| 5. | In clause 4, a manufacturing device of film for vacuum packaging that uses a cooling roller with bulgy and hollow projections in the shape of various images, including rectangle, polygon, straight line, curve, dot, circle, zigzag, diagonal line, etc. |
| 6. | Films for vacuum packaging that are composed with films manufactured by the manufacturing device of film for vacuum packaging described from clause 1 to 5 [7] Complex/multilayered film (10a) which includes resin layers, or singlelayered film (10b, 10c), colored or not colored In order to adjust the overall thickness of film or manufacture films with different purposes, a manufacturing device of film for vacuum packaging that does the following: Uses complex/multilayered film (10a) or singlelayered film (10b, 10c), colored or not colored; Installs guiding rollers necessary for additional transfer; Melts the film transferred by the guiding roller as it winds to the heating roller heated by the heater to a set temperature; If present, melts and accumulates a separate singlelayered film (10b, 10c), colored or not colored; Transfers the melted/accumulated film to the pressing roller; and Presses the film transferred by the heating roller to an even thickness using the pressing roller. |
MANUFACTURING DEVICE OF FILM FOR VACUUM
PACKAGING THE FILM
Technical Field
[1] This invention is a manufacturing device of film for vacuum packaging and the film itself. More specifically, film moved forward by the manufacturing device is melted by a heating roller, and then one side of the film is embossed as certain patterns, letters, or lines. Afterward, products are vacuum-packed with the embossed film using a suction- type vacuum packaging device. This invention is about the manufacturing device of film for vacuum packaging and the film itself that is used during this procedure. Background Art
[2] Generally, a vacuum wrapper is used in the form of envelope by cutting film smoothly and attaching the edges together.
[3] When preserving products in a vacuum, however, a suction-type vacuum packaging device cannot ensure a perfect vacuum state because film attaches to itself during the procedure of sucking air out of the wrapper. For this reason, alternative vacuum packaging devices with high costs are being used.
[4] As a result, demands for a method that can ensure a perfect vacuum state using a suction-type vacuum packaging device are increasing.
Disclosure of Invention Technical Problem
[5] To resolve the vacuum packaging problem, this invention reprocesses film that is already manufactured so that the film has bulgy and hollow projections on one side. This invention describes a manufacturing device for packaging film and the film itself that can ensure a perfect vacuum state using a suction-type vacuum packaging device. Technical Solution
[6] In order to meet the purpose of packaging and film, a sufficient amount of guiding rollers are installed to transfer single or multi-layered film made from various materials. When one or more of the films is transferred to the heating roller, it is melted. Then, the cooling roller carved with various patterns, images, letters, or lines presses down on the film to cool it. As a result of this procedure, one side of the film is embossed with various patterns, images, letters, or lines carved on the cooling roller.
[7] Referring the sketches attached to this specification, proper examples of this invention are described in detail below.
[8] Sketch 1 is a slanted view of an example of this invention, and Sketch 2 is a sectioned drawing of Sketch 1 installed. Sketch 3 is a sectioned drawing of another
example. Sketch 4 is a slanted view of another example and Sketch 5 is a sectioned drawing of Sketch 4 installed. Sketch 6 is a slanted view of a wrapper manufactured by film described in this invention. Sketch 7 and 8 are sectioned drawings that show the vacuum state of wrappers described in this invention.
[9] As shown in Sketch 1 and 2, film (10a) or films (10a, 10b, 10c) that are already manufactured are transferred by a guiding roller (40) to a heating roller (20) with a proper temperature. Next, layers of film with a low melting point turn into a jelly state. Then, one side of the melted film (10a) or films (10a, 10b, 10c) is cooled and embossed by a cooling roller (30) carved with various patterns, images, letters, or lines.
[10] Multi-layered film (10a) that is already manufactured has a different melting point for each layer, and when necessary, addition films (10b), (10c) can be added by using a heating roller (20).
[11] Since the layer contacting the heating roller (20) has a high melting point and doesnt melt when adhesive layers or resin layers of the film melts, it doesnt stick to the heating roller (20). When the melted resin layers contact the cooling roller (30), they cool down immediately, preventing unnecessary sticking.
[12] The films (10a, 10b, 10c) can include various types of films, including nylon films, adhesive films, resin films, EVOH films, PVDC films, and PET films. They can also be single or multi-layered. Though only three types of films (10a, 10b, 10c) are mentioned on the Sketch, the number of types can be either larger or smaller.
[13] Among the materials, nylon, PVDC, EVOH and PET have the function of blocking gas leakage. Based on the accumulative structure of multi-layered film, these materials can be used in the middle of the film or on the outer surface of the film. A complex layer structure is also possible.
[14] Among the materials, resin includes all types of resin layers that generally become adhesive by applying heat, such as polyethylene (PE), polypropylene (PP), high- density polyethylene (HD), polyolefin.
[15] Adhesive layer mentioned above refers to a layer with adhesive materials that can adhere to different types of films or resins (Ex: Nylon and PE, EVOH and PE)
[16] Heating roller (20) mentioned above rotates with a heater built within it.
[17] Cooling roller (30) mentioned above rotates with bulgy and hollow projections(31) carved on its surface.
[18] Bulgy and hollow projections mentioned above have various shapes such as patterns, letters, lines, and are embossed on one side of the film (10a).
[19] More specifically, shapes that are embossed on the film (10a) or films (10a, 10b,
10c) can have various patterns, such as zigzags, straight lines, curves, circles, diagonal lines. They can also be letters, or even companys logo.
[20] Cooling roller (30) mentioned above is cooled by air or water. Inside the cooler, a cooling device (32) is installed to circulate cooling water. (Cooling device follows conventional methods.)
[21] As shown in Sketch 2, heating roller (20) and cooling roller (30) are located close to each other. Film (10a) or films (10a, 10b, 10c) are transferred between the heating roller (20) and the cooling roller (30).
[22] As described above, film (10a) or films (10a, 10b, 10c) are transferred and accumulated along the outer surface of the heating roller (20) through the guiding roller (40). The heating roller (20) is heated to a temperature set by the heater. During this procedure, layers of film with a low melting point turn into a jelly state, and then pass between the heating roller (20) and cooling roller (30). As the resin layers in a jelly state enter the bulgy and hollow projections (31) of the cooling roller, they are pressed down and cooled. At the same time, one side of the abovementioned film (11) is embossed clearly with patterns, images, lines, or letters. It also becomes transparent and evenly thick. Then, it is transferred through the guiding roller (40).
[23] The structure of this invention installs a heating roller (20) and a cooling roller (30) close to each other. Then, it melts the film (10a) or films (10a, 10b, 10c) to press, cool, and transfer them with the cooling roller (30).
[24] As shown in Sketch 3, even when the thickness of the film (10a) or films (10a, 10b,
10c) is uneven, the cooling roller (30) can be replaced with a general pressing roller (50) to resolve the problem. When the film (10a) or films (10a, 10b, 10c) are transferred to the heating roller (20) heated to a set temperature, the resin layers and adhesive layers of the film (10a) or films (10a, 10b, 10c) melt into a jelly state, and then accumulate during the procedure of passing between the heating roller (20) and pressing roller (50). By pressing the accumulated film (10a) or films (10a, 10b, 10c), high-quality films are manufactured with even thickness and high transparency.
[25] As shown in Sketch 4 and 5, the other example of this invention prepares film (10a) or films (10a, 10b, 10c) made out of various materials. Through the guiding roller (40), such film (10a) or films (10a, 10b, 10c) are transferred to the heating roller (20) heated to a set temperature. Then, layers with low melting temperature turn into a jelly state. The film (10a) or films (10a, 10b, 10c) are again transferred to the cooling roller (30) installed beneath. This cooling roller (30) embosses patterns, images, or letters on one side of the film while cools both sides of the films.
[26] Omitting the overlapped descriptions of the procedure, the cooling roller (30) is installed beneath the heating roller (20), and is gapped by a certain distance. It is installed in a manner to allow both sides to rotate.
[27] One side of the cooling roller (30) has bulgy and hollow projections carved on it, so that embossing of patterns, images, lines or letters can be performed on the film (10a)
or films (10a, 10b, 10c). [28] The cooling roller is cooled by water. The cooling roller is located close to the heating roller, and film (10a) or films (10a, 10b, 10c) that pass through are pressed and cooled at the same time. [29] The film (10a) or films (10a, 10b, 10c) heated by the heating roller (20) pass through the cooling roller (30) installed in both sides. During this procedure, resin layers and adhesive layers of the heated film (10a) or films (10a, 10b, 10c) that have a low melting point pass through the cooling roller (30) in jelly state. At the same time, they are pressed down, and patterns, letters, etc are embossed on one side of the film
(10a) or films (10a, 10b, 10c), forming an even thickness. [30] As described above, layers with a low melting point are melted by the heater (21) of the heater roller (20), while other layers remain rigid. Then, they are transferred to the cooling roller (30) to be pressed and cooled at the same time. [31] By rapidly cooling both sides of the transferred film (10a) or films (10a, 10b, 10c) using the cooling roller (30), films (11) can have high clarity. [32] As shown in Sketch 7 and 8, films (11) manufactured in the example have even thickness, as well as embossing on one side. [33] Also, one side of the films (11) is embossed by the heating roller (20) and cooling roller (30), while the other side is manufactured with even thickness, ensuring high durability of the outer layer. [34] After making a packaging envelope using films (11) manufactured by the procedure above, products or foods are placed inside the packaging envelope, and then a vacuum is created by sucking out sufficient air with a suction-type vacuum packaging device. [35] Even if both sides of the wrapper films (11) attach to each other during suctioning by the vacuum packaging device, air is sucked out through the embossing on the films
(11), ensuring a perfect vacuum state.
Advantageous Effects [36] This invention reprocesses films that are already manufactured so that films have bulgy and hollow projections on one side, and by using the reprocessed films, it vacuum-packs products using a suction-type vacuum packaging device.
Brief Description of the Drawings
[37] Sketch 1 is a slanted view of an example of this invention
[38] Sketch 2 is a sectioned drawing of Sketch 1 installed
[39] Sketch 3 is a sectioned drawing of another example of this invention
[40] Sketch 4 is a slanted view of another example of this invention
[41] Sketch 5 is a sectioned drawing of Sketch 4 installed
[42] Sketch 6 is a slanted view of a wrapper manufactured by film described in this
invention
[43] Sketch 7 and 8 are sectioned drawings that show the vacuum state of wrappers described in this invention
[44] * Interpretation of marks related to major parts of sketches *
[45] 10a: Complex/multi-layered film 10b: Single-layered film
[46] 10c: Single-layered or colored film 11 : Processed film
[47] 20: Heating roller 21 : Heater
[48] 30: Cooling roller 31 : Bulgy and hollow projections
[49] 32: Cooling device 40: Guiding roller
Best Mode for Carrying Out the Invention
[50] A manufacturing device of film for vacuum packaging and the film itself that; transfers complex/multi-layered film (10a) or single-layered film (10b, 10c), colored or not colored, to the heating roller (20); melts layers of the complex/multi-layered film (10a) or single-layered film (10b, 10c) with a low melting point to a jelly state as soon as they are transferred to the heating roller heated to a set temperature by the heater; presses film that has been transferred in a jelly state while it passes through the heating roller (20) and cooling roller (30) carved with various images; embosses various images (patterns, images, letters, lines) on the film while cooling it; and manufactures film (11) for vacuum packaging with even thickness, clear embossing and high transparency. Mode for the Invention
[51] A device that manufactures clear and transparent film by preventing the film surface that contacts the heating roller (20) from sticking to the heating roller (20) by using the melting point of the surface, which is relatively higher than other layers; and preventing residues from sticking to the cooling roller (30) by embossing the images of the cooling roller on the melted film and cooling it as soon as the melted film contacts the cooling roller (30).
Industrial Applicability
[52] This is a method to transfer complex/multi-layered film or single-layered film, colored or not colored, to the heating roller heated to a set temperature by the heater; melt layers with a low melting point to a jelly state as soon as they are transferred; press film that has been transferred in a jelly state while it passes through the cooling roller carved with various images; emboss various images (patterns, images, letters, lines) on the film while cooling it; and manufacture film for vacuum packaging with even thickness, clear embossing and high transparency.
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