Vapor-phase rust-proof bag

Abstract

The utility model discloses a gas-phase rust-proof bag, which is characterized in that an exhaust structure and a corresponding sealing cover are arranged to control the opening and closing of an airflow channel, so that air in the bag can be exhausted after the bag is sealed, and a triple sealing structure which takes an exhaust hole as a center is formed below the sealing cover, so that good air tightness in the bag after the exhaust is finished is ensured. And air outside the bag is prevented from invading from the exhaust holes, and anti-rust factor gas is prevented from leaking. Articles placed in the gas-phase rust-proof bag can be clamped and fixed in the central area in the bag through the flexible cushion layer, gas flow is sucked in from the gas inlet holes in the side face of the gas flow channel table body and faces the open area in the bag, gas in the bag can be exhausted more efficiently, and when the bag is exhausted and contracts, the flexible cushion layer replaces the bag face to make contact with the articles, so that the gas-phase rust-proof bag is formed. And abrasion of the bag surface can be avoided. The gas-phase rust-proof bag can still achieve an ideal rust-proof effect in various complex and severe storage environments, and is particularly suitable for long-term storage of some precision metal products and rust-proof protection during marine transportation.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, in particular to a gas phase anti-rust bag. Background Art

[0002] The gas phase anti-rust bag series products are a combination of modern film technology and gas phase induction technology, and are made by blending, co-extruding and blow molding PE resin and VCI corrosion inhibitors through a special process. The principle is that the anti-rust gas factor generated by the volatilization of the VCI corrosion inhibitor contained in the gas phase anti-rust film, when the items that need to be rusted are placed in the gas phase anti-rust bag and sealed, a relatively closed environment will be formed inside the gas phase anti-rust bag, and the anti-rust particles in the anti-rust bag will be vaporized into gas, and the anti-rust gas factor will diffuse and penetrate to the surface of the items that need to be rusted to form a monomolecular thick anti-rust protective film, isolating the various factors that induce rust from contacting the surface of the items to be rusted, thereby achieving the anti-rust effect.

[0003] VCI bags are generally used for packaging metal products. However, when the rust-proof items are placed in VCI bags, the surrounding air will mix in. Especially for the long-term storage and rust-proof protection of some precision metal products during shipping, the humid atmosphere may still gradually cause some corrosion to the structure of the metal products, so that the desired ideal rust-proof effect cannot be fully achieved. Therefore, it is necessary to propose improvements to the existing VCI bags in order to further enhance the rust-proof effect of VCI bags. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a vapor phase rust-proof bag to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a gas phase rust-proof bag, which comprises a first bag surface and a second bag surface opposite to each other, wherein the first bag surface and the second bag surface enclose an internal accommodation space of the gas phase rust-proof bag;

[0007] An exhaust seat is fixed on the outer surface of the first bag surface, an exhaust hole penetrating the first bag surface is arranged at the center of the exhaust seat, and an internal threaded concave ring and an elastic pipe mouth are arranged around the exhaust hole on the exhaust seat;

[0008] A sealing cover is also provided above the exhaust seat, and the sealing cover includes an external thread joint part, an enclosing groove and an airtight plate, wherein the external thread joint part is a hollow structure, the external thread joint part is connected to the internal thread concave ring by threads, the enclosing groove is located inside the external thread joint part, the enclosing groove is used to be sleeved on the elastic pipe mouth, covering the elastic pipe mouth, the airtight plate extends from the center of the enclosing groove, and the airtight plate is used to seal the exhaust hole;

[0009] An airflow channel platform is fixed on the inner surface of the first bag surface, the first bag surface is clamped between the exhaust seat and the airflow channel platform, an air inlet hole is opened on the side of the airflow channel platform, and the air inlet hole is connected with the exhaust hole to form an airflow channel;

[0010] The bottom of the airflow channel platform is covered with a first flexible pad layer, and the second bag surface is fixed with a second flexible pad layer corresponding to the lower side of the first flexible pad layer.

[0011] Preferably, the first flexible pad layer and the second flexible pad layer are both provided with concave-convex holes on their opposite inner surfaces.

[0012] Preferably, the first flexible cushion layer and the second flexible cushion layer include foam material layers.

[0013] Preferably, the gap area between the internal thread concave ring and the elastic pipe mouth is filled with a desiccant.

[0014] Preferably, the VCI bag further comprises a self-sealing strip for sealing the upper opening of the internal accommodation space formed by the first bag surface and the second bag surface, and the self-sealing strip is covered with dehumidification paper.

[0015] Preferably, the elastic pipe opening is a rubber pipe opening, and the enclosed groove is a rubber groove.

[0016] Preferably, air inlet holes connected to the exhaust holes are symmetrically provided on all side surfaces of the airflow channel platform.

[0017] The technical effects achieved by the technical solution of the utility model mainly include:

[0018] The gas in the internal space of the VCI bag can be discharged from the exhaust hole of the exhaust seat. After the bag is sealed, the air in the bag can be reduced to prevent the items from being corroded by the existing air in the bag. Under the same storage conditions, the anti-rust effect of the VCI bag can be further improved, extending the storage life of the stored items.

[0019] After the gas in the gas phase rust prevention bag is exhausted, the sealing cover completes the sealing of the air flow channel in the exhaust seat, wherein the airtight plate of the sealing cover seals the exhaust hole, the enclosing groove is set on the elastic pipe mouth, the external thread joint part is locked with the internal thread concave ring, and a triple sealing structure around the exhaust hole is formed at the same time, which ensures good air tightness in the bag, avoids the invasion of air outside the bag from the exhaust hole and the leakage of rust prevention factor gas, so that the gas phase rust prevention bag can adapt to various complex and harsh storage environments, and can still achieve ideal rust prevention effect for long-term storage of some precision metal products and long-term influence of humid sea breeze during sea transportation;

[0020] The objects placed in the vapor phase rust-proof bag can be clamped and fixed in the central area of ​​the bag by the first flexible pad layer and the second flexible pad layer. The air flow is sucked in from the air inlet holes on the side of the air flow channel platform, and flows toward the open area in the bag while bypassing the position of the objects. The gas in the bag can be discharged more efficiently to prevent the air flow from directly passing through the objects and affecting the surface of the objects. When the bag is exhausted and shrinks, the first flexible pad layer and the second flexible pad layer are in direct contact with the objects to avoid wear on the bag surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the gas phase rust-proof bag provided by the embodiment of the utility model;

[0022] Figure 2 For the corresponding Figure 1 A three-dimensional diagram of the middle sealing cover, the exhaust seat, the air flow channel platform and the second flexible cushion layer;

[0023] Figure 3 It is a schematic diagram of the docking state when the sealing cover is located on the exhaust seat.

[0024] The reference numerals in the above drawings are:

[0025] The first bag surface 1, the second bag surface 2, the second flexible cushion layer 21, the exhaust seat 3, the exhaust hole 30, the internal threaded concave ring 31, the elastic pipe mouth 32, the sealing cover 4, the external threaded joint part 41, the enclosed groove 42, the airtight plate 43, the air flow channel platform 5, the air inlet hole 50, and the first flexible cushion layer 51. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the utility model shown in the accompanying drawings and described according to the accompanying drawings are merely exemplary, and the utility model is not limited to these embodiments.

[0027] In order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and other details that are not relevant are omitted. Figure 1 The internal structures are indicated by dashed lines. Figure 3 The S-shaped curve indicates that the extension sections of the first bag surface 1 and the second bag surface 2 are omitted.

[0028] Reference Figure 1 As shown, an embodiment of the utility model provides a gas phase rust-proof bag, which includes a first bag surface 1 and a second bag surface 2 opposite to each other, and the first bag surface 1 and the second bag surface 2 enclose an internal containing space of the gas phase rust-proof bag.

[0029] Combination Figure 2 and Figure 3 As shown, an exhaust seat 3 is fixed to the outer surface of the first bag surface 1, and an exhaust hole 30 penetrating the first bag surface 1 is provided at the center of the exhaust seat 3, and an internal threaded concave ring 31 and an elastic pipe orifice 32 are respectively provided on the exhaust seat 3 around the exhaust hole 30;

[0030] A sealing cover 4 is also provided above the exhaust seat 3. The sealing cover 4 includes an external thread joint portion 41, an enclosed groove 42 and an airtight plate 43. The external thread joint portion 41 is a hollow structure. The external thread joint portion 41 is connected to the internal thread concave ring 31 by threads. The enclosed groove 42 is located inside the external thread joint portion 41. The enclosed groove 42 is used to be sleeved on the elastic pipe mouth 32 to cover the elastic pipe mouth 32. The airtight plate 43 extends from the center of the enclosed groove 42. The airtight plate 43 is used to cover the exhaust hole 30.

[0031] An airflow channel platform 5 is fixed to the inner surface of the first bag surface 1. The first bag surface 1 is clamped between the exhaust seat 3 and the airflow channel platform 5. An air inlet hole 50 is opened on the side of the airflow channel platform 5. The air inlet hole 50 is connected to the exhaust hole 30 to form an airflow channel.

[0032] The bottom of the airflow channel platform 5 is covered with a first flexible pad layer 51 , and the second bag surface 2 is fixed with a second flexible pad layer 21 corresponding to the lower portion of the first flexible pad layer 51 .

[0033] Specifically, the use process of the gas phase anti-rust bag is as follows: after the items that need to be rust-proofed are placed in the internal accommodation space of the gas phase anti-rust bag for packaging, the sealing cover 4 can be rotated and removed to open the exhaust hole 30 of the exhaust seat 3, and then a vacuum tube can be used to be sleeved on the elastic pipe mouth 32 and clamped in the internal threaded concave ring 31 to connect the exhaust hole 30 to extract the gas in the bag, or the gas in the bag can be squeezed out by squeezing the gas phase anti-rust bag; after the gas in the bag is discharged, the sealing cover 4 is put back on the exhaust seat 3, and the sealing cover 4 is twisted to drive the external thread joint part 41 and the internal threaded concave ring 31 to cooperate with the thread rotation and locking, and the sealing cover 4 moves downward to make the enclosing groove 42 sleeved on the elastic pipe mouth 32 to close the elastic pipe mouth 32, and at the same time, the airtight plate 43 moves down to completely block the exhaust hole 30, so that the exhaust hole 30 is isolated from the outside, thereby maintaining the airtightness in the bag. After that, as the storage time increases, the anti-rust particles in the vapor phase anti-rust bag vaporize into gas, and the anti-rust gas factor diffuses and penetrates into the surface of the article to form a monomolecular thick anti-rust protective film, achieving the purpose of rust prevention.

[0034] In the above-mentioned VPC bag provided by the embodiment of the utility model, the gas in the internal accommodation space of the VPC bag can be discharged from the exhaust hole 30 of the exhaust seat 3, so that the air in the bag can be reduced after the bag is sealed, thereby preventing the items from being corroded by the existing air in the bag. Under the same storage conditions, the rust-proof effect of the VPC bag can be further improved, and the storage life of the stored items can be extended.

[0035] After the gas in the gas phase rust prevention bag is exhausted, the sealing cover 4 completes the closure of the air flow channel in the exhaust seat 3, wherein the airtight plate 43 of the sealing cover 4 covers the exhaust hole 30, the enclosing groove 42 is sleeved on the elastic pipe mouth 32, and the external thread joint part 41 is locked with the internal thread concave ring 31, and a triple closure around the exhaust hole 30 is formed at the same time, ensuring good air tightness in the bag thereafter, avoiding the invasion of air outside the bag from the exhaust hole 30 and the leakage of the rust prevention factor gas. With the above matching structure setting, the gas phase rust prevention bag can adapt to various complex and harsh storage environments, and can still achieve an ideal rust prevention effect for the long-term storage of some precision metal products and the long-term influence of humid sea breeze during sea transportation. In addition, the above exhaust structure is simple and easy to operate, and users can easily get started to achieve air discharge and bag sealing.

[0036] The objects placed in the VCI bag can be clamped and fixed in the central area of ​​the bag by the first flexible pad layer 51 and the second flexible pad layer 21. The airflow is sucked in from the air inlet 50 located on the side of the airflow channel platform 5, toward the open area in the bag and avoids the position of the objects. The airflow does not pass directly near the objects, and the gas in the bag can be discharged more efficiently. When the bag shrinks, the first flexible pad layer 51 and the second flexible pad layer 21 are in direct contact with the objects to avoid wear on the bag surface.

[0037] In order to further ensure that the articles are stably fixed between the first flexible pad layer 51 and the second flexible pad layer 21 when the gas in the bag is discharged, the first flexible pad layer 51 and the second flexible pad layer 21 are both provided with concave-convex holes 211 on the opposite inner surfaces.

[0038] Exemplarily, in order to provide sufficient flexible protection effect, the first flexible cushion layer 51 and the second flexible cushion layer 21 include a foam material layer.

[0039] The water vapor carried in the air is an important cause of rust on articles. Therefore, in addition to ensuring air tightness, the airflow channel can also be kept dry to further improve the anti-rust effect. In this embodiment, the gap area between the internal threaded concave ring 31 and the elastic nozzle 32 forms a certain usable space, so the gap area between the internal threaded concave ring 31 and the elastic nozzle 32 is filled with a desiccant, which can react chemically with water vapor to dry the surrounding area without affecting the inside of the bag.

[0040] Furthermore, the VCI bag further comprises a self-sealing strip for closing the upper opening of the internal containing space formed by the first bag surface 1 and the second bag surface 2, and the self-sealing strip is covered with dehumidification paper.

[0041] The elastic structures can compress the gaps between them when they are butted together, and have strong durability. Therefore, the elastic pipe opening 32 is a rubber pipe opening, and the enclosed groove 42 is a rubber groove.

[0042] Specifically, air inlet holes 50 connected to the exhaust holes 30 are symmetrically opened on all sides of the air flow channel platform 5, so the exhaust efficiency is relatively high.

[0043] The first bag surface 1 and the first bag surface 2 should be made of common anti-rust materials for vapor phase anti-rust bags. The shape and size of the bag body can be designed according to actual needs to meet the packaging requirements of different items.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0045] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A gas phase anti-rust bag, characterized in that: It comprises a first bag surface (1) and a second bag surface (2) opposite to each other, wherein the first bag surface (1) and the second bag surface (2) enclose an internal containing space of the gas phase rust-proof bag; An exhaust seat (3) is fixed on the outer surface of the first bag surface (1), an exhaust hole (30) penetrating the first bag surface (1) is provided at the center of the exhaust seat (3), and an internal threaded concave ring (31) and an elastic pipe opening (32) are respectively provided on the exhaust seat (3) around the exhaust hole (30); A sealing cover (4) is also provided above the exhaust seat (3), and the sealing cover (4) comprises an external thread joint portion (41), an enclosing groove (42) and an airtight plate (43). The external thread joint portion (41) is a hollow structure, and the external thread joint portion (41) is connected to the internal thread concave ring (31) by threads. The enclosing groove (42) is located inside the external thread joint portion (41), and the enclosing groove (42) is used to be sleeved on the elastic pipe mouth (32) to cover the elastic pipe mouth (32). The airtight plate (43) extends from the center of the enclosing groove (42), and the airtight plate (43) is used to seal the exhaust hole (30); An airflow channel platform (5) is fixed to the inner surface of the first bag surface (1), the first bag surface (1) is clamped between the exhaust seat (3) and the airflow channel platform (5), an air inlet hole (50) is opened on the side of the airflow channel platform (5), and the air inlet hole (50) is connected to the exhaust hole (30) to form an airflow channel; The bottom of the airflow channel platform (5) is covered with a first flexible pad layer (51), and below the first flexible pad layer (51), a second flexible pad layer (21) is fixed to the second bag surface (2).

2. The VCI bag according to claim 1, characterized in that: Concave-convex pores (211) are provided on the opposing inner surfaces of the first flexible pad layer (51) and the second flexible pad layer (21).

3. The VCI bag according to claim 1, characterized in that: The first flexible pad layer (51) and the second flexible pad layer (21) include a foam material layer.

4. The VCI bag according to claim 1, characterized in that: The gap area between the internal thread concave ring (31) and the elastic pipe opening (32) is filled with a desiccant.

5. The VCI bag according to claim 1, characterized in that: The VCI bag also includes a self-sealing strip for sealing the upper opening of the internal accommodating space formed by the first bag surface (1) and the second bag surface (2), and a dehumidifying paper is attached to the side of the self-sealing strip.

6. The VCI bag according to claim 1, characterized in that: The elastic pipe opening (32) is a rubber pipe opening, and the enclosed groove (42) is a rubber groove.

7. The VCI bag according to claim 1, characterized in that: Air inlet holes (50) connected to the exhaust holes (30) are symmetrically provided on all side surfaces of the air flow channel platform (5).

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