Dustproof packaging bag

Abstract

This utility model discloses a dustproof packaging bag, comprising: an outer bag; and an inner bag, the inner bag being made of a water-soluble material and placed inside the outer bag. The inner bag has a partition perpendicular to the opening of the outer bag, thus forming two bag bodies. By separating the inner bag into two water-soluble bag bodies through the partition perpendicular to the opening of the outer bag, it avoids the generation of large amounts of dust during material feeding, protecting the health of feeding personnel. It also allows for the separate packaging of powder and fiber in fiber composite materials, meeting the quality inspection requirements during factory construction. This avoids the problem of powder and fiber adhering to each other and affecting weighing results, leading to significant experimental errors, which is common in existing methods where powder and fiber are packaged in the same bag.

Description

Technical Field

[0001] This utility model relates to the field of concrete additive packaging technology, and in particular to a dustproof packaging bag. Background Technology

[0002] The use of low-dosage admixtures is common in modern concrete, such as high-performance fiber-reinforced composite crack-resistant materials, with dosages ranging from 1kg to 2kg, including 0.6kg of fiber and the remainder as powder. In actual production, the fiber and powder are often unevenly mixed, but bulk shipping is not feasible. Therefore, packaging is necessary, typically involving packing the powder and fiber together in a single bag. This packaging method causes the fiber and powder to adhere to each other, making it difficult to completely separate them during quality control tests. This leads to significant errors in the proportional weighing of fiber and powder, affecting experimental results. Furthermore, current fiber composite material packaging often uses ordinary bags. During material addition, the powder and fiber must be poured out of the bag, which is not only cumbersome but also generates dust, resulting in significant losses. This reduces the effective components in the crack-resistant concrete, lowering its crack resistance, and polluting the environment and harming the health of operators.

[0003] In view of this, it is necessary to design a dustproof packaging bag to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a dustproof packaging bag that is easy to operate, convenient for sampling, improves the accuracy of trial mixing experiments, avoids dust flying during the feeding process, ensures sufficient addition of crack-resistant materials in actual concrete production, reduces environmental pollution, and protects the health of feeding personnel.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dustproof packaging bag, comprising:

[0007] outer bag;

[0008] The inner bag, made of a water-soluble material, is placed inside the outer bag. The inner bag has a partition perpendicular to the opening of the outer bag, so that the inner bag forms two bag bodies.

[0009] As a further improvement of this utility model, the outer bag opening is provided with a sealing chain and a sealing area in sequence along the direction away from the inner bag.

[0010] As a further improvement of this utility model, the sealing area is provided with an easy-tear line.

[0011] As a further improvement of this utility model, triangular notches are provided on both sides of the easy-tear line to facilitate tearing.

[0012] As a further improvement of this utility model, the partition is a sealing line.

[0013] As a further improvement of this utility model, the sealing method of the sealing line is heat sealing or bonding.

[0014] As a further improvement of this utility model, the inner bag is made of polyvinyl alcohol.

[0015] As a further improvement of this utility model, the thickness of the inner bag is 0.01-0.1mm.

[0016] As a further improvement of this utility model, the length-to-width ratio of the bag body is 1-2:1.

[0017] As a further improvement of this utility model, the outer bag is made of polypropylene.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model separates the inner bag into two water-soluble bags by using a partition perpendicular to the opening of the outer bag. This not only avoids the occurrence of a large amount of dust flying during material feeding, protecting the health of the feeding personnel, but also allows for the separate packaging of powder and fiber in the fiber composite material to meet the quality inspection requirements during factory construction. This avoids the problem of powder and fiber adhering to each other and affecting the weighing results due to the existing method of packaging powder and fiber in the same bag, resulting in large experimental errors.

[0020] 2. The present invention arranges two bags sequentially along the width of the outer bag. On the one hand, this facilitates quality inspection and sampling; on the other hand, by making the bags used for packaging powder and fiber one-piece, the powder and fiber can be fed simultaneously during construction. Compared with the separate arrangement, the one-piece arrangement does not require separate secondary feeding, resulting in higher construction efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the dustproof packaging bag of this utility model.

[0022] Figure 2 This is a schematic diagram of the appearance of a dustproof packaging bag.

[0023] Figure Labels

[0024] 10. Outer bag; 11. Sealing area; 111. Easy-tear line; 112. Notch; 12. Sealing line; 20. Inner bag; 21. Sealing line. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0027] Additionally, it should be noted that 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.

[0028] Please see Figure 1 and Figure 2 As shown, this utility model provides a dustproof packaging bag, comprising:

[0029] Outer bag 10;

[0030] The inner bag 20, made of a water-soluble material, is placed inside the outer bag 10. The inner bag 20 has a partition perpendicular to the opening of the outer bag 10, so that the inner bag 20 forms two bag bodies.

[0031] Specifically, the outer bag 10 has a sealing chain and a sealing area 11 arranged sequentially at the opening away from the inner bag 20.

[0032] For example, the sealing chain is the sealing line 12, and the sealing area 11 is sealed by heat sealing, so that two sealing structures are formed at the opening of the outer bag 10 to ensure the sealing effect of the outer bag 10.

[0033] The sealed area 11 is also provided with an easy-tear line 111 parallel to the width of the outer bag 10, and the easy-tear line 111 is provided with triangular notches 112 on both sides to facilitate tearing, so that when the inner bag 20 needs to be taken out, the sealing of the sealed area 11 can be quickly opened through the notches 112 and the easy-tear line 111.

[0034] Specifically, the partition is a sealing line 21, and the sealing method of the sealing line 21 is heat sealing or bonding.

[0035] By setting a sealing line 21 on the inner bag 20, two water-soluble bags are formed on the inner bag 20, which facilitates the separate packaging of powder and fiber in the fiber composite material. In particular, by defining the orientation of the sealing line 21, that is, the sealing line 21 is perpendicular to the opening of the outer bag 10, the top of the two bags is facing the opening of the outer bag 10. This facilitates quality inspection and sampling during the factory construction process. That is, after opening the opening of the outer bag 10, both inner bags 20 can be opened at the same time for sampling. This avoids the situation where the two bags packaging powder and fiber are stacked in the outer bag 10 due to the sealing line 21 being parallel to the opening of the outer bag 10, which would require the inner bag 20 to be completely removed from the outer bag 10 for sampling. This makes the quality inspection and sampling process more convenient.

[0036] Meanwhile, during handling, it is common practice to place the load-bearing point in the middle of the outer bag 10 along the direction perpendicular to the opening of the outer bag 10. This utility model, by limiting the sealing line 21 to be perpendicular to the opening of the outer bag 10, can avoid the inner bag 20 from being damaged due to the sealing line 21 being parallel to the opening of the outer bag 10 and thus becoming a concentrated stress point.

[0037] In addition, the water-soluble setting of the inner bag 20 can completely seal the powder in the bag body. When using it, the bag body is directly put into the equipment, and the water-soluble bag body dissolves to realize the feeding of powder. This can effectively avoid a large amount of dust flying during the feeding process or due to strong winds, protect the health of feeding personnel, and ensure the sufficient addition of crack-resistant materials in actual concrete production.

[0038] For example, the inner bag 20 is made of polyvinyl alcohol; the thickness of the inner bag 20 is 0.01-0.1mm; and the length-to-width ratio of the bag body is 1-2:1.

[0039] The outer bag 10 is made of polypropylene.

[0040] When feeding materials, tear open the easy-tear line 111 and open the sealing line 12, take out the inner bag 20 containing powder and fiber, and put the inner bag 20 directly into the mixer. In the mixer, as the water is stirred, the inner bag 20 quickly dissolves, and the powder and fiber are evenly dispersed in the water at the same time, so as to complete the feeding of powder and fiber simultaneously and effectively avoid dust flying during the feeding process.

[0041] When conducting trial mixing tests, after opening the outer bag 10, the tops of the two bags can be opened separately to weigh the powder and fiber as needed. This avoids the large errors caused by the existing mixed packaging of fiber and powder, which prevents the fiber and powder from being completely separated and can only be weighed together.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. A dustproof packaging bag, characterized in that, include: outer bag; The inner bag, made of a water-soluble material, is placed inside the outer bag. The inner bag has a partition perpendicular to the opening of the outer bag, so that the inner bag forms two bag bodies.

2. The dustproof packaging bag according to claim 1, characterized in that: The outer bag opening is provided with a sealing chain and a sealing area in sequence along the direction away from the inner bag.

3. The dustproof packaging bag according to claim 2, characterized in that: The sealed area is equipped with an easy-tear line.

4. The dustproof packaging bag according to claim 3, characterized in that: The easy-tear line has triangular notches on both sides to facilitate tearing.

5. The dustproof packaging bag according to claim 1, characterized in that: The partition is a sealing line.

6. The dustproof packaging bag according to claim 5, characterized in that: The sealing method of the sealing line is heat sealing or bonding.

7. The dustproof packaging bag according to claim 1, characterized in that: The inner bag is made of polyvinyl alcohol.

8. The dustproof packaging bag according to claim 1, characterized in that: The thickness of the inner bag is 0.01-0.1 mm.

9. The dustproof packaging bag according to claim 1, characterized in that: The length-to-width ratio of the bag is 1-2:

1.

10. The dustproof packaging bag according to claim 1, characterized in that: The outer bag is made of polypropylene.

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