A waterproof and breathable valve pocket facilitating quick bagging

Abstract

The application discloses a waterproof and breathable valve pocket facilitating rapid bagging, and belongs to the technical field of valve pockets. The waterproof and breathable valve pocket comprises an outer pocket, an inner pocket and a flexible top cover. The inner pocket is arranged in the outer pocket. The inner pocket and the outer pocket are both box structures with an opening at the top. The flexible top cover is made of a flexible waterproof material. The first end of the flexible top cover is connected with the top of the side wall of the first side of the outer pocket along the length direction. The top of the side wall of the second side of the outer pocket along the length direction is provided with a support platform. The support platform is provided with a breathable hole. The second end of the flexible top cover is used for being bonded with the support platform, so as to shield and seal the top openings of the inner pocket and the outer pocket. The inner pocket is arranged in the outer pocket to form a double-layer pocket structure, which strengthens waterproofness. Meanwhile, the inner pocket and the outer pocket are shielded and sealed by the flexible top cover, so that the valve pocket can be conveniently opened and rapidly bagged.

Description

Technical Field

[0001] This application relates to the field of valve bag technology, and in particular, to a waterproof and breathable valve bag that facilitates quick filling. Background Technology

[0002] The information provided in this section is for the purpose of generally presenting the background of this application. To the extent described in this section, the work of the currently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly considered to be prior art of this application.

[0003] Valve bags are one of the most common types of bags for filling powdered materials, widely used due to their ease of filling and stacking. Valve bags are an environmentally friendly packaging material. Using specialized filling equipment, materials are filled through a valve at the top or bottom to form a cubic shape. They are mainly used for powdery or granular solid materials and flexible items. Currently, valve bags often have a PE layer sandwiched between multiple layers of paper bags for moisture protection. The PE layer provides good sealing and effectively isolates moisture. However, because the material is blown into the bag by pneumatic equipment during filling, the internal air pressure of the bag tube is higher than the external atmospheric pressure. Therefore, it is often necessary to expel the air promptly during filling to complete the bagging process quickly. Furthermore, after filling, the internal air must also be expelled to ensure the flatness of the contact surfaces between the bag tubes during stacking, thus ensuring stable stacking.

[0004] For example, Chinese patent publication number CN222794173U discloses a leak-proof and breathable valve bag, which includes a bag body, a bag opening, and a bag bottom. At the bag opening, an outer valve paper, an inner valve paper, an inner reinforcing layer, and an outer reinforcing layer are sequentially bonded. The inner reinforcing layer is made of breathable material. The bag opening is provided with a first bonding area, a second bonding area, a third bonding area, and a fourth bonding area. The first bonding area covers the bag opening, the second bonding area covers the outer valve paper, the third bonding area covers the outer valve paper and the bag opening, and the fourth bonding area covers the bag opening, the outer valve paper, and the inner reinforcing layer. A glue-free area is provided on one side of the bag opening located at the fourth bonding area so that a breathable channel is formed after the bag opening is folded. During the filling process, the inner reinforcing layer allows air to be quickly discharged from the breathable channel. After filling is completed, the bag body is tilted, and the internal material pushes against the inner reinforcing layer from the inside. The outer reinforcing layer and the inner reinforcing layer work together to close the breathable channel.

[0005] However, the existing valve bag has a relatively complex structure, which increases manufacturing costs, and its opening is not convenient enough, making it difficult to quickly fill the bag during use.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] In view of at least one of the above technical problems, this application provides a waterproof and breathable valve bag that facilitates quick bagging. It can form a double-layer bag structure by placing an inner bag inside an outer bag to enhance waterproofing. At the same time, a flexible top cover can cover and seal the inner and outer bags, which can facilitate opening the bag and thus achieve quick bagging.

[0008] According to one aspect of this application, a waterproof and breathable valve bag that facilitates quick filling is provided, comprising an outer bag, an inner bag, and a flexible top cap:

[0009] The inner pocket is located inside the outer pocket. Both the inner and outer pockets are box-shaped structures with top openings. The flexible top cover is made of flexible waterproof material. The first end of the flexible top cover is connected to the top of the first side wall of the outer pocket along its length. The top of the second side wall of the outer pocket along its length is provided with a support platform. Ventilation holes are opened on the support platform. The second end of the flexible top cover is used to adhere to the support platform to cover and seal the top openings of the inner and outer pockets.

[0010] In some embodiments of this application, the flexible top cover is provided with reinforcing sealing strips on both opposite sides perpendicular to the length direction of the outer pocket, and the reinforcing sealing strips are used to bond to the outer surface of the side wall of the outer pocket.

[0011] In some embodiments of this application, the reinforcing sealing strip is made of a flexible waterproof material, and a first adhesive strip is provided on the reinforcing sealing strip for bonding the reinforcing sealing strip to the outer surface of the side wall of the outer pocket.

[0012] In some embodiments of this application, a sealing sheet is provided at the second end of the flexible top cover for bonding with the support platform.

[0013] In some embodiments of this application, the sealing sheet is provided with pores spaced apart.

[0014] In some embodiments of this application, locking strips are provided on opposite sides of the sealing sheet along the width direction of the outer pocket, and the locking strips are used to adhere to the outer surface of the side wall of the outer pocket.

[0015] In some embodiments of this application, the locking strap is provided with an adhesive portion, the adhesive portion is provided with adhesive, and the locking strap is bonded to the outer surface of the side wall of the outer pocket through the adhesive of the adhesive portion.

[0016] In some embodiments of this application, a PE layer is provided between the inner pocket and the outer pocket.

[0017] This application has the following beneficial effects:

[0018] This application presents a waterproof and breathable valve bag for quick and easy bagging. The bag features a double-layer structure with an inner bag inside an outer bag, enhancing overall strength and waterproof performance. Both the inner and outer bags are top-opening box-like structures. A flexible top cover, made of flexible waterproof material, connects to the top of the first side wall of the outer bag along its length. A support platform is located on the top of the second side wall of the outer bag along its length. The second end of the flexible top cover is then bonded to the support platform, sealing the top openings of both bags. This allows for easy opening by simply lifting the flexible top cover, facilitating quick and easy bagging. Ventilation holes on the support platform enhance breathability and minimize any impact on the bag's overall strength.

[0019] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above simultaneously. In addition to the purposes, features, and advantages described above, this application also has other purposes, features, and advantages. The application will be further described in detail below with reference to figures. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the connection between the inner pocket and the outer pocket in a preferred embodiment of this application;

[0023] Figure 3 This is a schematic diagram showing the location of the support platform according to a preferred embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the locking band according to a preferred embodiment of this application;

[0025] Legend: 1. Outer pocket; 2. Inner pocket; 3. Connecting platform; 4. Flexible top cover; 5. Sealing sheet; 6. Supporting platform; 7. Vent hole; 8. Reinforcing sealing strip; 9. Locking strip; 10. Adhesive part. Detailed Implementation

[0026] The embodiments of this application are described in detail below with reference to the accompanying drawings; however, this application may be implemented in a variety of different ways as defined and covered below.

[0027] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of this application; Figure 2This is a schematic diagram of the connection between the inner pocket and the outer pocket in a preferred embodiment of this application; Figure 3 This is a schematic diagram showing the location of the support platform according to a preferred embodiment of this application; Figure 4 This is a schematic diagram of the locking band according to a preferred embodiment of this application.

[0028] A waterproof and breathable valve bag for easy and quick filling includes an outer pocket 1, an inner pocket 2, and a flexible top flap 4.

[0029] The inner pocket 2 is located inside the outer pocket 1. Both the inner pocket 2 and the outer pocket 1 are box-shaped structures with top openings. The flexible top cover 4 is made of flexible waterproof material. The first end of the flexible top cover 4 is connected to the top of the side wall of the outer pocket 1 along the length direction. The top of the side wall of the outer pocket 1 along the length direction is provided with a support platform 6. The support platform 6 has ventilation holes 7. The second end of the flexible top cover 4 is used to bond to the support platform 6 to cover and seal the top openings of the inner pocket 2 and the outer pocket 1.

[0030] This application presents a waterproof and breathable valve bag for quick and easy bagging. The bag features a double-layer structure, with an inner bag 2 nested inside an outer bag 1, which enhances the overall strength and waterproof performance of the bag. Both the inner bag 2 and the outer bag 1 are box-like structures with open tops. A flexible top cover 4, made of flexible waterproof material, connects to the top of the first side wall of the outer bag 1 along its length. A support platform 6 is located on the top of the second side wall of the outer bag 1 along its length. The second end of the flexible top cover 4 is then bonded to the support platform 6, effectively sealing the top openings of both the inner and outer bag 1. This allows for easy opening by lifting the flexible top cover 4, facilitating quick and easy bagging. The support platform 6 has ventilation holes 7, which improves the overall breathability of the bag and reduces any impact on its overall strength.

[0031] Preferably, please refer to Figure 1 and 3 As shown, the flexible top cover 4 is provided with reinforcing sealing strips 8 on both opposite sides perpendicular to the length direction of the outer pocket 1. The reinforcing sealing strips 8 are used to bond to the outer surface of the side wall of the outer pocket 1.

[0032] It is understandable that by setting reinforcing sealing strips 8 on the opposite sides of the flexible top cover 4, the gap between the flexible top cover 4 and the outer pocket 1 can be sealed more effectively, greatly improving the sealing effect of the flexible top cover 4 on the overall top opening of the pocket.

[0033] Preferably, the reinforcing sealing strip 8 is made of a flexible waterproof material, and a first adhesive strip is provided on the reinforcing sealing strip 8 for bonding the reinforcing sealing strip 8 to the outer surface of the side wall of the outer pocket 1.

[0034] It is understandable that by using flexible waterproof material to make the reinforcing sealing strip 8, the flexible deformation effect of the reinforcing sealing strip 8 can be achieved, which facilitates the adhesion of the reinforcing sealing strip 8 to the outer pocket 1, and the first adhesive strip achieves the effect of reinforcing connection between the reinforcing sealing strip 8 and the outer wall of the outer pocket 1.

[0035] Preferably, please refer to Figure 1 As shown, a sealing sheet 5 is provided at the second end of the flexible top cover 4, which is used to bond with the support platform 6.

[0036] Optionally, a second adhesive strip is provided on the sealing sheet 5 at intervals, and the sealing sheet 5 is bonded to the support platform 6 by the second adhesive strip.

[0037] It is understandable that the sealing sheet 5 and the support platform 6 form an overlapping connection structure, and the support platform 6 can support the sealing sheet 5 and the flexible top cover 4, and facilitate the direct opening of the bag as a whole by disassembling the sealing sheet 5 and the support platform 6, which is convenient for quick bagging.

[0038] Preferably, the sealing sheet 5 has vent holes spaced apart.

[0039] It is understandable that by opening air holes at intervals on the sealing sheet 5, and cooperating with the ventilation holes 7 on the support platform 6, the overall air permeability of the pocket can be guaranteed, while reducing the impact on the overall strength of the pocket.

[0040] Preferably, please refer to Figure 1 As shown, the sealing sheet 5 is provided with locking bands 9 on both sides of the outer pocket 1 along the width direction. The locking bands 9 are used to bond to the outer surface of the side wall of the outer pocket 1.

[0041] In this preferred embodiment, the locking strap 9 is provided with an adhesive portion 10, which is provided with adhesive. The locking strap 9 is bonded to the outer surface of the side wall of the outer pocket 1 through the adhesive of the adhesive portion 10. Optionally, the locking strap 9 is made of a flexible material.

[0042] It is understandable that by making the locking band 9 from a flexible material, the locking band 9 can be made to fit the outer wall of the outer pocket 1, and the adhesive of the adhesive part 10 is used to bond it together, so as to effectively press the sealing sheet 5 tightly and stick it to the support platform 6 to achieve a stable connection and ensure the overall connection strength of the pocket.

[0043] Preferably, a PE layer is provided between the inner pocket 2 and the outer pocket 1.

[0044] It is understandable that by using the existing PE layer as an interlayer, the good sealing properties of the PE layer can be utilized to isolate moisture and improve the overall strength of the multi-layer pocket.

[0045] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] This document uses specific examples to illustrate the principles and implementation methods of this application. The examples are merely for the purpose of helping to understand the method and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, and the existence of an infinite number of specific structures, those skilled in the art can make various improvements, modifications, or variations without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered as protected by this application.

Claims

1. A waterproof and breathable valve bag for easy and quick filling, characterized in that, Includes an outer pocket (1), an inner pocket (2), and a flexible top flap (4): The inner pocket (2) is located inside the outer pocket (1). Both the inner pocket (2) and the outer pocket (1) are box structures with top openings. The flexible top cover (4) is made of flexible waterproof material. The first end of the flexible top cover (4) is connected to the top of the side wall of the first side of the outer pocket (1) along the length direction. The top of the side wall of the second side of the outer pocket (1) along the length direction is provided with a support platform (6). The support platform (6) has ventilation holes (7). The second end of the flexible top cover (4) is used to bond with the support platform (6) to cover and seal the top openings of the inner pocket (2) and the outer pocket (1).

2. The waterproof and breathable valve bag for easy and quick filling according to claim 1, characterized in that, The flexible top cover (4) is provided with reinforcing sealing strips (8) on both sides perpendicular to the length direction of the outer pocket (1). The reinforcing sealing strips (8) are used to bond to the outer surface of the side wall of the outer pocket (1).

3. A waterproof and breathable valve bag for easy and quick filling according to claim 2, characterized in that, The reinforcing sealing strip (8) is made of flexible waterproof material and has a first adhesive strip on it. The first adhesive strip is used to bond the reinforcing sealing strip (8) to the outer surface of the side wall of the outer pocket (1).

4. A waterproof and breathable valve bag for easy and quick filling according to claim 1, characterized in that, A sealing sheet (5) is provided at the second end of the flexible top cover (4), which is used to bond with the support platform (6).

5. A waterproof and breathable valve bag for easy and quick filling according to claim 4, characterized in that, The sealing sheet (5) has pores spaced apart.

6. A waterproof and breathable valve bag for easy and quick filling according to claim 4, characterized in that, The sealing sheet (5) is provided with locking straps (9) on both sides of the outer pocket (1) along the width direction. The locking straps (9) are used to adhere to the outer surface of the side wall of the outer pocket (1).

7. A waterproof and breathable valve bag for easy and quick filling according to claim 6, characterized in that, The locking strap (9) is provided with an adhesive part (10) and adhesive is provided in the adhesive part (10). The locking strap (9) is bonded to the outer surface of the side wall of the outer pocket (1) through the adhesive of the adhesive part (10).

8. A waterproof and breathable valve bag for easy and quick filling according to claim 1, characterized in that, A PE layer is provided between the inner pocket (2) and the outer pocket (1).

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