Corrosion-resistant structure of POF (Polyolefin Fiber) film

Abstract

The utility model discloses a POF (Polyolefin Fiber) membrane corrosion-resistant structure, which relates to the technical field of POF membranes and comprises a shell, a limiting mechanism is arranged in the shell, a winding drum is arranged in the shell, a POF membrane body is wound outside the winding drum, a reinforcing mechanism is arranged outside the POF membrane body, the top end of the shell is in threaded connection with a sealing cover, and finger holes are formed in two sides of the top end of the sealing cover. The middle of the bottom end of the sealing cover is in threaded connection with a damp-proof cylinder; the POF film winding drum has the advantages that the POF film and the winding drum are isolated from the outside through cooperation of the shell and the sealing cover, the POF film and the winding drum are prevented from being exposed to the outside for a long time, corrosion of the POF film is slowed down, the interior of the shell and the interior of the winding drum are dried through cooperation of the sealing cover and the damp-proof barrel, the POF film and the winding drum are further prevented from being corroded, and the service life of the POF film is prolonged. And the service life of the POF film is prolonged under the long-term storage of the POF film.

Description

Technical Field

[0001] The utility model relates to a corrosion-resistant structure, in particular to a POF film corrosion-resistant structure, and belongs to the technical field of POF films. Background Art

[0002] POF film is a heat shrink film. The full name of POF is multi-layer co-extruded polyolefin heat shrink film. It is plasticized and extruded by five extruders, and then processed by special processes such as die head forming and bubble blowing. It is used to package products with regular and irregular shapes. Due to its non-toxic and environmentally friendly, high transparency, high shrinkage rate, good heat sealing performance, high gloss, strong toughness, tear resistance, uniform heat shrinkage and suitability for fully automatic high-speed packaging, corrosion-resistant structure is required to prevent POF film from corrosion and damage and extend its service life.

[0003] Among them, the "A high-strength anti-static POF heat shrinkable film" disclosed in application number "202022558477.5" is also an increasingly mature technology, including a main body, the inner surface of the main body is provided with an inner layer, the outer surface of the body is provided with an outer layer, the inner layer includes a first reinforcement layer, the inner surface of the first reinforcement layer is provided with a first anti-corrosion layer, the inner surface of the first anti-corrosion layer is provided with a first anti-static layer, the outer layer includes a second anti-corrosion layer, the outer surface of the second anti-corrosion layer is provided with a second reinforcement layer, the outer surface of the second reinforcement layer is provided with a second anti-static layer, and the outer surface of the second anti-static layer is provided with a fireproof layer. The utility model solves the problem that the existing POF heat shrink film has poor strength and no antistatic effect, which reduces the practicality of the POF heat shrink film through the coordinated use of a main body, an inner layer, an outer layer, a first reinforcement layer, a first anti-corrosion layer, a first antistatic layer, a second anti-corrosion layer, a second reinforcement layer, a second antistatic layer, a fireproof layer and a wear-resistant layer. After further search, the "high-strength antistatic POF heat shrink film" disclosed in application number "202221976585.7" includes an inner layer, an antistatic layer is fixedly installed on the outside of the inner layer, and connecting components that improve the connection strength between the inner layer and the antistatic layer are provided in the inner layer and the antistatic layer. The high-strength antistatic POF heat shrinkable film is provided with a connecting component. The first connecting layer and the second connecting layer can connect the inner layer and the antistatic layer together, which can increase the connection strength between the inner layer and the antistatic layer, making it difficult for the inner layer and the antistatic layer to be separated. In addition, the second connecting layer passes through the first connecting layer and is fixedly connected to the first connecting layer, which can ensure a firm connection between the first connecting layer and the second connecting layer, thereby connecting the inner layer, the antistatic layer, the first connecting layer and the second connecting layer together and making them difficult to be separated, thereby improving the connection strength and solving the problem of low strength.

[0004] However, the above method still has the following defects in actual use: during the storage of the POF film, the roll is exposed to the outside for a long time and is easily corroded by moisture, which affects the use of the POF film. Therefore, the utility model provides a corrosion-resistant structure of the POF film. Utility Model Content

[0005] The purpose of the utility model is to provide a POF film corrosion-resistant structure to solve the problem in the above background technology that the POF film roll is exposed to the outside for a long time and is easily corroded by moisture.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a POF film corrosion-resistant structure, comprising an outer shell, a limiting mechanism provided inside the outer shell, a reel placed inside the outer shell, a POF film body wrapped around the outside of the reel, a reinforcement mechanism provided on the outside of the POF film body, a sealing cover threadedly connected to the top of the outer shell, finger holes are provided on both sides of the top of the sealing cover, a moisture-proof tube is threadedly connected to the middle of the bottom end of the sealing cover, and the moisture-proof tube is inserted into the inside of the reel.

[0007] As a preferred technical solution of the present invention, the bottom end of the sealing cover is connected to a first threaded barrel, and the top of the shell is provided with a first external thread threadedly connected to the first threaded barrel.

[0008] As a preferred technical solution of the present invention, a sealing ring is connected to the bottom end of the sealing cover, and a sealing groove is provided at the top end of the housing for engaging with the sealing ring.

[0009] As an optimal technical solution of the present invention, a second threaded barrel is connected to the middle of the bottom end of the sealing cover, a connecting ring is connected to the top end of the moisture-proof barrel, and a second external thread is provided on the outer wall of the connecting ring for threaded connection with the second threaded barrel.

[0010] As an optimal technical solution of the present invention, the reinforcing mechanism includes two corrosion-resistant layers, which are respectively arranged on both sides of the POF membrane body. The corrosion-resistant layers are made of polytetrafluoroethylene material, and a waterproof layer is provided on one side of the corrosion-resistant layer. The waterproof layer is made of a composite waterproof coating.

[0011] As a preferred technical solution of the present invention, a wear-resistant layer is provided on one side of the corrosion-resistant layer, and the wear-resistant layer is made of a wear-resistant coating.

[0012] As an optimal technical solution of the present invention, the limiting mechanism includes six springs, each three springs forming a group, one end of the two groups of springs are respectively arranged on the inner walls on both sides of the shell, and the other ends of the two groups of springs are connected to the limiting plate.

[0013] As a preferred technical solution of the present invention, a paddle is connected to the middle of the top end of the limiting plate.

[0014] Compared with the related art, the POF film corrosion-resistant structure provided by the present invention has the following advantages:

[0015] Beneficial effects:

[0016] The cooperation between the shell and the sealing cover isolates the POF film and the roll from the outside, preventing the POF film and the roll from being exposed to the outside for a long time, slowing down the corrosion of the POF film. The cooperation between the sealing cover and the moisture-proof cylinder, which is located inside the roll, keeps the inside of the shell and the roll dry, further preventing the POF film and the roll from corrosion, and extending the service life of the POF film under long-term storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the housing of the utility model;

[0020] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure at point B.

[0022] In the figure: 1. Outer shell; 2. Sealing cover; 3. Reel; 4. POF film body; 5. Moisture-proof tube; 6. Reinforcement mechanism; 7. Finger hole; 8. Limiting mechanism; 9. First external thread; 10. First threaded tube; 11. Sealing ring; 12. Sealing groove; 13. Second threaded tube; 14. Connecting ring; 15. Second external thread; 601. Corrosion-resistant layer; 602. Waterproof layer; 603. Wear-resistant layer; 801. Spring; 802. Limiting plate; 803. Pick. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1:

[0025] See also Figure 1-5 The utility model provides a POF film corrosion-resistant structure, including a shell 1, a limiting mechanism 8 is provided inside the shell 1, a reel 3 is placed inside the shell 1, a POF film body 4 is wound around the outside of the reel 3, a reinforcing mechanism 6 is provided on the outside of the POF film body 4, a sealing cover 2 is threadedly connected to the top of the shell 1, finger holes 7 are opened on both sides of the top of the sealing cover 2, a moisture-proof cylinder 5 is threadedly connected to the middle part of the bottom end of the sealing cover 2, and the moisture-proof cylinder 5 is inserted into the inside of the reel 3. The shell 1 and the sealing cover 2 seal the reel 3 and the POF film body 4 to prevent the external environment from affecting the storage of the POF film body 4 and reducing the corrosion rate of the POF film body 4. The moisture-proof cylinder 5 is located inside the reel 3, and the desiccant inside the moisture-proof cylinder 5 dries the inside of the reel 3 to prevent the reel 3 from being corroded by moisture.

[0026] The bottom end of the sealing cover 2 is connected to a first threaded barrel 10, and the top of the housing 1 is provided with a first external thread 9 threadedly connected to the first threaded barrel 10. The bottom end of the sealing cover 2 is fixedly connected to a sealing ring 11, and the top end of the housing 1 is provided with a sealing groove 12 engaged with the sealing ring 11. The sealing cover 2 is rotated, and the sealing cover 2 is fixed to the top end of the housing 1 under the threaded cooperation of the first threaded barrel 10 and the first external thread 9, so that the sealing ring 11 is squeezed into the sealing groove 12, thereby enhancing the sealing between the sealing cover 2 and the housing 1 and preventing the external environment from affecting the storage of the POF film;

[0027] A second threaded barrel 13 is fixedly connected to the middle of the bottom end of the sealing cover 2, and a connecting ring 14 is fixedly connected to the top end of the moisture-proof barrel 5. The outer wall of the connecting ring 14 is provided with a second external thread 15 that is threadedly connected to the second threaded barrel 13. The moisture-proof barrel 5 is rotated to drive the connecting ring 14 to rotate. With the thread cooperation between the second threaded barrel 13 and the second external thread 15, the moisture-proof barrel 5 can be quickly removed to facilitate the replacement of the desiccant.

[0028] Specifically, first place the reel 3 and the POF film body 4 inside the shell 1, then place the sealing cover 2 on the top of the shell 1, so that the moisture-proof cylinder 5 is located inside the reel 3, and then rotate the sealing cover 2 to fix the sealing cover 2 on the top of the shell 1, thereby separating the POF film body 4 from the outside to prevent the POF film body 4 from being corroded by the external environment. The moisture-proof cylinder 5 dries the inside of the reel 3 to prevent the reel 3 from being corroded by moisture, thereby further enhancing the corrosion resistance of the POF film.

[0029] Example 2:

[0030] The reinforcing mechanism 6 includes two corrosion-resistant layers 601, which are respectively fixedly arranged on both sides of the POF membrane body 4. The corrosion-resistant layers 601 are made of polytetrafluoroethylene material. The corrosion-resistant layers 601 enhance the corrosion resistance of the POF membrane body 4 and extend the service life of the POF membrane body 4. A waterproof layer 602 is fixedly provided on one side of the corrosion-resistant layer 601. The waterproof layer 602 is made of a composite waterproof coating. The waterproof layer 602 enhances the waterproof performance of the POF membrane body 4 and prevents the inside of the POF membrane body 4 from being damp. A wear-resistant layer 603 is fixedly provided on one side of the corrosion-resistant layer 601. The wear-resistant layer 603 is made of a wear-resistant coating. The wear-resistant layer 603 enhances the wear resistance of the POF membrane body 4 and increases the service strength of the POF membrane body 4.

[0031] Specifically, the corrosion-resistant layer 601 and the waterproof layer 602 are used in conjunction to prevent moisture from entering the POF membrane body 4, thereby enhancing the corrosion resistance of the POF membrane body 4. The wear-resistant layer 603 is used to enhance the wear resistance of the POF membrane body 4, thereby extending the service life of the POF membrane body 4.

[0032] Example 3:

[0033] The limiting mechanism 8 includes six springs 801, with three springs 801 forming a group. One end of the two groups of springs 801 is fixedly arranged on the inner walls on both sides of the housing 1, and the other ends of the two groups of springs 801 are fixedly connected to the limiting plates 802. When the springs 801 are reset, the limiting plates 802 move toward the middle to limit the POF film body 4 and prevent the POF film body 4 from loosening. A paddle 803 is fixedly connected to the middle of the top of the limiting plate 802. The paddle 803 can be used to pry the limiting plate 802, thereby facilitating the placement of the reel 3 and the POF film body 4 between the two limiting plates 802.

[0034] Specifically, first manually move the paddle 803 so that the paddle 803 drives the limiting plate 802 to move toward the inner wall of the outer shell 1, squeezing the spring 801, and then place the POF film body 4 and the reel 3 between the two limiting plates 802, and then place the POF film into the outer shell 1. Under the reset of the spring 801, the limiting plate 802 moves toward the middle until the two limiting plates 802 limit the POF film body 4 to prevent the POF film body 4 from loosening.

[0035] When in use, first manually move the paddle 803 so that the paddle 803 drives the limiting plate 802 to move toward the inner wall of the housing 1, squeezing the spring 801, and then place the POF film body 4 and the reel 3 between the two limiting plates 802, and then place the POF film into the housing 1. Under the reset of the spring 801, the limiting plate 802 moves toward the middle until the two limiting plates 802 limit the POF film body 4 to prevent the POF film body 4 from loosening;

[0036] Then put the sealing cover 2 on the top of the shell 1 so that the moisture-proof cylinder 5 is located inside the reel 3. Then rotate the sealing cover 2 and fix it on the top of the shell 1, thereby separating the POF film body 4 from the outside and preventing the POF film body 4 from being corroded by the external environment. The moisture-proof cylinder 5 dries the inside of the reel 3 to prevent the reel 3 from being corroded by moisture, further enhancing the corrosion resistance of the POF film.

[0037] During the use of the POF membrane, the corrosion-resistant layer 601 and the waterproof layer 602 enhance the corrosion resistance of the POF membrane body 4, preventing the inside of the POF membrane body 4 from being damaged by moisture. With the use of the wear-resistant layer 603, the wear resistance of the POF membrane body 4 is enhanced, thereby extending the service life of the POF membrane body 4.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A POF film corrosion-resistant structure, comprising a housing (1), characterized in that: A limiting mechanism (8) is provided inside the shell (1), a reel (3) is placed inside the shell (1), a POF film body (4) is wound around the outside of the reel (3), a reinforcing mechanism (6) is provided on the outside of the POF film body (4), a sealing cover (2) is threadedly connected to the top of the shell (1), finger holes (7) are provided on both sides of the top of the sealing cover (2), a moisture-proof tube (5) is threadedly connected to the middle of the bottom end of the sealing cover (2), and the moisture-proof tube (5) is inserted into the inside of the reel (3).

2. The POF film corrosion-resistant structure according to claim 1, characterized in that: The bottom end of the sealing cover (2) is connected to a first threaded barrel (10), and the top of the housing (1) is provided with a first external thread (9) threadedly connected to the first threaded barrel (10).

3. The POF film corrosion-resistant structure according to claim 1, characterized in that: The bottom end of the sealing cover (2) is connected to a sealing ring (11), and the top end of the housing (1) is provided with a sealing groove (12) that is snap-fitted and connected to the sealing ring (11).

4. The POF film corrosion-resistant structure according to claim 1, characterized in that: A second threaded barrel (13) is connected to the middle of the bottom end of the sealing cover (2), a connecting ring (14) is connected to the top end of the moisture-proof barrel (5), and a second external thread (15) is formed on the outer wall of the connecting ring (14) and is threadedly connected to the second threaded barrel (13).

5. The POF film corrosion-resistant structure according to claim 1, characterized in that: The reinforcing mechanism (6) comprises two corrosion-resistant layers (601), the two corrosion-resistant layers (601) being respectively arranged on both sides of the POF membrane body (4), the corrosion-resistant layers (601) being made of polytetrafluoroethylene material, and a waterproof layer (602) being provided on one side of the corrosion-resistant layer (601), and the waterproof layer (602) being made of a composite waterproof coating.

6. The POF film corrosion-resistant structure according to claim 5, characterized in that: A wear-resistant layer (603) is provided on one side of the corrosion-resistant layer (601), and the wear-resistant layer (603) is made of a wear-resistant coating.

7. The POF film corrosion-resistant structure according to claim 1, characterized in that: The limiting mechanism (8) includes six springs (801), with three springs (801) forming a group. One end of two groups of springs (801) are respectively arranged on the inner walls on both sides of the housing (1), and the other ends of the two groups of springs (801) are connected to the limiting plate (802).

8. The POF film corrosion-resistant structure according to claim 7, characterized in that: A paddle (803) is connected to the middle portion of the top end of the limiting plate (802).

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