Packaging bag of bag-in-bag structure

Abstract

The utility model belongs to the technical field of packaging bags, and particularly relates to a packaging bag of a bag-in-bag structure, a vertical pipe vertically installed in the middle divides a bag mouth into an inner outlet and an outer outlet, an inner packaging bag is installed on the inner side of the outer packaging bag, and the inner packaging bag and the outer packaging bag are communicated through the outer outlet and the inner outlet of the bag mouth. By means of the design, the internal space of the packaging bag is effectively utilized, two different types of substances can be stored, two different packaging bags are combined into a whole to be convenient to carry and store, the cover and the bag mouth are connected through the threads through the external threads and the internal threads, stability is achieved, operation is easy, and the packaging bag is convenient to carry and store. A user can open or close the bag by rotating the cover, and the discharge hole and the inner outlet can control the flow rate of substances on the inner sides of the inner packaging bag and the outer packaging bag, so that the mixing proportion of the packaging bags is more accurate, and the use convenience of the packaging bags is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging bags, and in particular relates to a packaging bag with a bag-in-bag structure. Background Art

[0002] In daily life and industrial production, the packaging and storage of fluid items has always been an important technical issue, especially those fluid items that need to be mixed before use but must be kept separate during storage, such as AB glue, hair dye, etc. These items need to be mixed in a certain proportion when used to ensure their performance and safety, but they must be prevented from accidentally mixing during storage to maintain their respective stability and effectiveness. Traditional separate independent packaging requires separate packaging for use, which is cumbersome and inconvenient to store and use, and it is inconvenient to control different proportions of different fluid items according to different needs. Utility Model Content

[0003] The purpose of the utility model is to provide a packaging bag with a bag-in-bag structure, so as to solve the problems mentioned in the background technology.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0005] A packaging bag with a bag-in-bag structure comprises a bag spout and a lid, wherein the outer side of the bag spout is provided with an external thread, the inner side of the lid is provided with an internal thread matching the external thread, a vertical tube is vertically installed in the middle of the bag spout, the vertical tube separates the bag spout into an inner outlet and an outer outlet, a discharge hole is opened at the bottom of the outer outlet, an outer packaging bag is connected to the lower side of the bag spout, an inner packaging bag is installed on the inner side of the outer packaging bag, the upper side of the outer packaging bag is connected to the outer outlet, and the inner packaging bag is connected to the inner outlet.

[0006] The number of the discharge holes is multiple and evenly distributed around the circumference.

[0007] The ratio of the area of ​​the inner outlet to the total area of ​​the plurality of discharge holes is equal to the ratio of the volume of the inner packaging bag to that of the outer packaging bag.

[0008] The inner side of the cover is provided with concave-convex grooves matching the outer outlet, the discharge hole and the inner outlet.

[0009] The outer side of the cover is provided with a plurality of friction strips which are evenly distributed circumferentially.

[0010] The vertical pipe installed vertically in the middle separates the bag mouth into an inner outlet and an outer outlet. An inner bag is installed inside the outer bag, and the two are connected through the outer outlet and the inner outlet of the bag mouth. This design makes effective use of the internal space of the bag, and can store two different types of substances separately. Combining two different bags into one is convenient for carrying and storage. The external thread and the internal thread make the lid and the bag mouth connected by threads, which is not only stable but also easy to operate. The user can open or close the bag by rotating the lid. The discharge hole and the inner outlet can control the flow rate of the inner bag and the inner material of the outer bag to make the mixing ratio of the bag more accurate, thereby improving the convenience of using the bag and discharging the material evenly distributed in a circular shape. The holes can make the mixing of different substances in the packaging bag more uniform. The design that the ratio of the area of ​​the inner outlet to the total area of ​​the multiple discharge holes is equal to the ratio of the volume of the inner packaging bag to the outer packaging bag allows the materials inside the inner packaging bag and the materials inside the outer packaging to be used up relatively at the same time, thereby reducing the residual materials inside the packaging bag, making the packaging bag more environmentally friendly. The concave and convex grooves matching the outer outlet, the discharge holes and the inner outlet can further enhance the sealing performance of the packaging bag when the lid is closed, prevent material leakage or moisture, and accidental mixing of the two substances inside the packaging bag, further improving the reliability of the packaging bag. The friction strip on the outside of the lid can increase friction to facilitate users to open and tighten the lid, further improving convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings.

[0012] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the structure of the lid and the bag mouth in the utility model.

[0014] Figure 3 This is a schematic structural diagram of the bag mouth of the utility model from another angle.

[0015] Bag mouth 1, cover 2, external thread 3, internal thread 4, vertical tube 5, internal outlet 6, external outlet 7, discharge hole 8, outer packaging bag 9, inner packaging bag 10, concave-convex groove 11, friction strip 12. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1-3As shown, a packaging bag with a bag-in-bag structure includes a bag spout 1 and a lid 2. The outer side of the bag spout 1 is provided with an external thread 3, and the inner side of the lid 2 is provided with an internal thread 4 matching the external thread 3. A vertical tube 5 is vertically installed in the middle of the bag spout 1, and the vertical tube 5 divides the bag spout 1 into an inner outlet 6 and an outer outlet 7. A discharge hole 8 is opened at the bottom of the outer outlet 7. An outer packaging bag 9 is connected to the lower side of the bag spout 1, and an inner packaging bag 10 is installed inside the outer packaging bag 9. The upper side of the outer packaging bag 9 is connected to the outer outlet 7, and the inner packaging bag 10 is connected to the inner outlet 6.

[0018] The vertical tube 5 installed vertically in the middle divides the bag mouth 1 into an inner outlet 6 and an outer outlet 7. An inner packaging bag 10 is installed on the inner side of the outer packaging bag 9, and the two are connected through the outer outlet 7 and the inner outlet 6 of the bag mouth 1. This design makes effective use of the internal space of the packaging bag, and can store two different types of substances separately, and combine two different packaging bags into one for easy carrying and storage. The external thread 3 and the internal thread 4 make the cover 2 and the bag mouth 1 connected by threads, which is not only stable but also easy to operate. The user can open or close the bag by rotating the cover 2. The discharge hole 8 and the inner outlet 6 can control the flow rate of the inner packaging bag 10 and the inner side of the outer packaging bag 9 to make the mixing ratio of the packaging bag more accurate, thereby improving the convenience of using the packaging bag.

[0019] There are multiple discharge holes 8 which are evenly distributed around the circumference.

[0020] The ratio of the area of ​​the inner outlet 6 to the total area of ​​the plurality of discharge holes 8 is equal to the ratio of the volume of the inner packaging bag 10 to the outer packaging bag 9 .

[0021] The inner side of the cover 2 is provided with a concave-convex groove 11 matching the outer outlet 7 , the discharge hole 8 and the inner outlet 6 .

[0022] The outer side of the cover 2 is provided with a plurality of friction strips 12 which are evenly distributed around the circumference.

[0023] The evenly distributed discharge holes 8 can make the mixing of different substances in the packaging bag more uniform.

[0024] The design that the ratio of the area of ​​the inner outlet 6 to the total area of ​​the multiple discharge holes 8 is equal to the ratio of the volume of the inner packaging bag 10 to the outer packaging bag 9 allows the material inside the inner packaging bag 10 and the material inside the outer packaging 9 to be used up relatively at the same time, thereby reducing the residual material inside the packaging bag and making the packaging bag more environmentally friendly.

[0025] The concave-convex groove 11 matching the outer outlet 7, the discharge hole 8 and the inner outlet 6 can further enhance the sealing performance of the packaging bag when the lid 2 is closed, prevent the material from leaking or getting wet, and prevent the two substances inside the packaging bag from accidentally mixing, thereby further improving the reliability of the packaging bag.

[0026] The friction strip on the outside of the cover 2 can increase friction to facilitate the user to open and tighten the cover 2, further improving the convenience of use.

[0027] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A packaging bag with a bag-in-bag structure, comprising a bag spout and a lid, characterized in that: The outer side of the bag spout is provided with an external thread, the inner side of the cover is provided with an internal thread matching the external thread, a vertical tube is vertically installed in the middle of the bag spout, the vertical tube divides the bag spout into an inner outlet and an outer outlet, a discharge hole is opened at the bottom of the outer outlet, an outer packaging bag is connected to the lower side of the bag spout, an inner packaging bag is installed on the inner side of the outer packaging bag, the upper side of the outer packaging bag is connected to the outer outlet, and the inner packaging bag is connected to the inner outlet.

2. The packaging bag of a bag-in-bag structure according to claim 1, characterized in that: The number of the discharge holes is multiple and evenly distributed around the circumference.

3. The packaging bag of a bag-in-bag structure according to claim 2, characterized in that: The ratio of the area of ​​the inner outlet to the total area of ​​the plurality of discharge holes is equal to the ratio of the volume of the inner packaging bag to that of the outer packaging bag.

4. The packaging bag of a bag-in-bag structure according to claim 3, characterized in that: The inner side of the cover is provided with concave-convex grooves matching the outer outlet, the discharge hole and the inner outlet.

5. The packaging bag of a bag-in-bag structure according to claim 4, characterized in that: The outer side of the cover is provided with a plurality of friction strips which are evenly distributed circumferentially.

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