A plastic bag with double seal

Abstract

The utility model discloses a kind of plastic packaging bags with double sealing, belong to packaging bag technical field, including packaging bag main body, the inside fixed mounting of packaging bag main body has sealing mechanism, the sealing mechanism includes into bone, first clamping strip, second clamping strip, bone, first clamping groove and second clamping groove.The utility model is further promoted the practicability and sealing reliability of packaging bag by the collaborative design of layered mechanism and sealing mechanism;Hot sealing end in layered mechanism carries out preliminary sealing to left side opening, and double clamping sealing with sealing mechanism forms double protection, avoids single sealing position failure to cause overall sealing collapse;Meanwhile, upper die and lower die realize bag inner space layering, enhance the local structural strength of packaging bag main body, prevent the destruction of sealing mechanism due to local stress concentration, compared with existing plastic packaging bag only relying on single sealing, the utility model not only solves sealing failure problem.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag technology, and in particular to a plastic packaging bag with double sealing. Background Technology

[0002] Plastic packaging bags are widely used in various fields such as food, daily chemicals, and hardware due to their advantages such as light weight, low cost, and portability. Most existing plastic packaging bags adopt a single sealing structure, commonly heat-sealed edge seal or zipper seal.

[0003] In the existing technology, when plastic packaging bags are sealed, the single-layer sealing structure of the inner rib and the inner rib is difficult to achieve a good sealing effect. For example, when the upper and lower ends or any end of the packaging bag is pulled, the items inside the packaging bag will fall due to gravity. The force of the fall can easily cause the single-layer sealing inner rib and the inner rib to detach, further leading to the failure of the plastic bag's seal. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the prior art by proposing a plastic packaging bag with double sealing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A plastic packaging bag with double sealing includes a main body of the packaging bag. A sealing mechanism is fixedly installed inside the main body of the packaging bag. The sealing mechanism includes an inlet rib, a first locking strip, a second locking strip, a connecting rib, a first locking groove, and a second locking groove. The inlet rib is fixedly disposed at the top of the main body of the packaging bag. The first locking strip and the second locking strip are both fixedly disposed on the outer wall of the inlet rib. The connecting rib is fixedly disposed at the bottom of the main body of the packaging bag. The first locking groove and the second locking groove are formed on the inner wall of the inlet rib.

[0006] Preferably, when the bone is inserted into the fused bone, the first locking strip and the second locking strip are respectively inserted into the first locking slot and the second locking slot.

[0007] Preferably, the sealing mechanism includes a first interlocking strip and an interlocking block, wherein the first interlocking strip is fixedly disposed at the top of the main body of the packaging bag, and the interlocking block is fixedly disposed at the bottom of the first interlocking strip.

[0008] Preferably, the sealing mechanism includes a second fitting strip and a fitting groove, wherein the second fitting strip is fixedly disposed at the bottom end of the main body of the packaging bag, and the fitting groove is formed at one end of the second fitting strip.

[0009] Preferably, when the first interlocking strip is in a state of abutting against the second interlocking strip, the interlocking block is inserted into the interlocking groove.

[0010] Preferably, a layering mechanism is fixedly provided at one end of the main body of the packaging bag, the layering mechanism including a heat-sealing end, the heat-sealing end being fixedly provided at the left opening of the main body of the packaging bag.

[0011] Preferably, the layering mechanism includes an upper mold and a lower mold, both of which are fixedly disposed at one end of the main body of the packaging bag.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In this utility model, a double-locking structure with an insert, a locking mechanism, double locking strips, and double locking grooves is designed in the sealing mechanism. When the insert is inserted into the locking mechanism, the first locking strip engages with the first locking groove, and the second locking strip engages with the second locking groove simultaneously, forming a double lock. Compared with a single-layer sealing structure, its tensile strength is significantly improved, effectively resisting the pulling force generated by the falling of items inside the bag. This fundamentally solves the core problems of easy detachment and sealing failure in existing single-layer seals. 2. In this utility model, the practicality and sealing reliability of the packaging bag are further improved through the coordinated design of the layering mechanism and the sealing mechanism. The heat-sealing end in the layering mechanism provides initial sealing to the left opening, forming double protection with the double-locking seal of the sealing mechanism, avoiding the collapse of the overall seal due to the failure of a single sealing part. At the same time, while realizing the layering of the internal space of the bag, the upper mold and the lower mold enhance the local structural strength of the main body of the packaging bag, preventing the sealing mechanism from being damaged due to concentrated local forces. Compared with existing plastic packaging bags that rely on only a single seal, this utility model not only solves the problem of sealing failure, but also realizes multiple functions of sealing protection, spatial layering, and structural reinforcement, thereby improving the overall performance of the packaging bag. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall front view structure of a plastic packaging bag with double sealing proposed in this utility model; Figure 2 This is a front view diagram of a partially sectional structure of a plastic packaging bag with double sealing proposed in this utility model. Figure 3 This is a schematic diagram of the overall top and side view structure of a plastic packaging bag with double sealing proposed in this utility model; Figure 4 This is a schematic diagram of the combined structure of the inlet rib and the first card strip of a plastic packaging bag with double sealing proposed in this utility model; Figure 5 This is a schematic diagram of the combined structure of the first and second interlocking strips of a plastic packaging bag with double sealing proposed in this utility model.

[0014] In the diagram: 1. Main body of the packaging bag; 101. Heat-sealing end; 1011. Upper mold; 1012. Lower mold; 2. Inlet; 201. First retaining strip; 2011. Second retaining strip; 2012. Fitting; 2013. First slot; 2014. Second slot; 2015. First interlocking strip; 2016. Interlocking block; 2017. Second interlocking strip; 2018. Interlocking groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Example, refer to Figures 1-5 A double-sealed plastic packaging bag includes a main body 1. A sealing mechanism is fixedly installed inside the main body 1. The sealing mechanism includes an inlet rib 2, a first locking strip 201, a second locking strip 2011, a connecting rib 2012, a first locking groove 2013, and a second locking groove 2014. The inlet rib 2 is fixedly disposed at the top of the main body 1. The first locking strip 201 and the second locking strip 2011 are both fixedly disposed on the outer wall of the inlet rib 2. The connecting rib 2012 is fixedly disposed at the bottom of the main body 1. The first locking groove 2013 and the second locking groove 2014 are formed on the inner wall of the inlet rib 2. A sealing mechanism comprising an inlet 2, a first retaining strip 201, a second retaining strip 2011, a connecting strip 2012, a first retaining groove 2013, and a second retaining groove 2014 is fixedly installed inside the main body 1 of the packaging bag. The inlet 2 is located at the top of the main body 1 of the packaging bag, the first retaining strip 201 and the second retaining strip 2011 are located on the outer wall of the inlet 2, the connecting strip 2012 is located at the bottom of the main body 1 of the packaging bag, and the first retaining groove 2013 and the second retaining groove 2014 are located on the inner wall of the inlet 2. This establishes a basic structural framework for a double seal for the plastic packaging bag, initially improving the sealing stability and avoiding the problem of easy failure of a single seal.

[0017] Furthermore, when the insert 2 is inserted into the fitting 2012, the first locking strip 201 and the second locking strip 2011 are respectively inserted into the first locking groove 2013 and the second locking groove 2014. By specifying that when the insert 2 is inserted into the fitting 2012, the first locking strip 201 and the second locking strip 2011 are respectively inserted into the first locking groove 2013 and the second locking groove 2014, the tightness of the connection between the insert 2 and the fitting 2012 is enhanced through such double locking cooperation, reducing the probability of the two separating when the packaging bag is pulled, further ensuring the sealing effect and preventing sealing failure.

[0018] Furthermore, the sealing mechanism includes a first interlocking strip 2015 and an interlocking block 2016. The first interlocking strip 2015 is fixedly disposed at the top of the main body 1 of the packaging bag, and the interlocking block 2016 is fixedly disposed at the bottom of the first interlocking strip 2015. The addition of the first interlocking strip 2015 and the interlocking block 2016 to the sealing mechanism, with the first interlocking strip 2015 disposed at the top of the main body 1 of the packaging bag and the interlocking block 2016 disposed at the bottom of the first interlocking strip 2015, enriches the composition of the sealing mechanism, provides structural support for subsequent cooperation with other components to form another layer of seal, strengthens the dual sealing capability of the sealing mechanism, and improves the sealing reliability of the packaging bag.

[0019] Furthermore, the sealing mechanism includes a second fitting strip 2017 and a fitting groove 2018. The second fitting strip 2017 is fixedly disposed at the bottom end of the packaging bag body 1, and the fitting groove 2018 is opened at one end of the second fitting strip 2017. The second fitting strip 2017 and the fitting groove 2018 are provided in the sealing mechanism. The second fitting strip 2017 is disposed at the bottom end of the packaging bag body 1, and the fitting groove 2018 is opened at one end of the second fitting strip 2017, forming a corresponding mating structure with the first fitting strip 2015 and the fitting block 2016. This provides another set of mating sealing components for the sealing mechanism, helping the sealing mechanism to achieve double sealing through the cooperation of multiple sets of components and reducing the risk of sealing failure.

[0020] Furthermore, when the first interlocking strip 2015 is in a tight abutment with the second interlocking strip 2017, the interlocking block 2016 is inserted into the interlocking groove 2018. When the first interlocking strip 2015 and the second interlocking strip 2017 are in a tight abutment, the interlocking block 2016 is inserted into the interlocking groove 2018. This interlocking fit makes the first interlocking strip 2015 and the second interlocking strip 2017 form a tight interlocking seal, which together with the snap-fit ​​seal of the inlet rib 2 and the interlocking rib 2012 constitutes a double sealing structure, which greatly improves the sealing performance of the packaging bag. Even if one set of sealing components is slightly loose, the other set can still maintain the seal to prevent the items inside the bag from being affected.

[0021] Furthermore, a layering mechanism is fixedly provided at one end of the main body 1 of the packaging bag. The layering mechanism includes a heat-sealing end 101, which is fixedly provided at the left opening of the main body 1 of the packaging bag. The layering mechanism includes the heat-sealing end 101 provided at the left opening of the main body 1 of the packaging bag. The heat-sealing end 101 heat-seals the left opening, and together with the layering mechanism, it achieves preliminary sealing and layering planning at the opening, which not only enhances the sealing performance of the opening, but also provides layering convenience for storing and taking out the items inside the bag, and helps to improve the overall sealing effect.

[0022] Furthermore, the layering mechanism includes an upper mold 1011 and a lower mold 1012, both of which are fixedly installed at one end of the main body 1 of the packaging bag. The layering mechanism further improves the function of the layering mechanism by dividing one end of the main body 1 of the packaging bag into upper and lower layers, thereby enabling the storage of items in the bag space in separate areas and avoiding mixing. At the same time, the upper and lower molds can also enhance the structural stability of this end, assist in ensuring the sealing effect of the sealing mechanism, and improve the practicality of the packaging bag.

[0023] In use, firstly, a layering mechanism is fixedly assembled at one end of the main body 1 of the packaging bag. The heat-sealing end 101 of the layering mechanism is pre-fixed at the left opening of the main body 1 of the packaging bag. The heat sealing action of the heat-sealing end 101 completes the initial sealing of the left opening of the packaging bag, preventing external impurities from entering or internal items from leaking from the left opening. At the same time, the upper mold 1011 and the lower mold 1012 in the layering mechanism are both fixed at this end of the main body 1 of the packaging bag. The upper mold 1011 and the lower mold 1012 are parallel to each other and spaced apart, dividing the internal space of the main body 1 of the packaging bag into upper and lower layers. This facilitates the subsequent classification and storage of items and avoids the accumulation of items inside the bag, which may cause excessive local stress and affect the sealing effect, thus laying a structural foundation for subsequent sealing operations. When a core seal is required on the main body 1 of the packaging bag, the operator manually pushes the feed rib 2 fixed at the top of the main body 1 of the packaging bag, causing the feed rib 2 to slowly insert into the fitting rib 2012 fixed at the bottom of the main body 1 of the packaging bag. Since the outer wall of the feed rib 2 is provided with a first retaining strip 201 and a second retaining strip 2011 protruding along its length, and the inner wall of the fitting rib 2012 is provided with a first retaining groove 2013 and a second retaining groove 2014 that perfectly match the shape and size of the first retaining strip 201 and the second retaining strip 2011, the operator manually pushes the feed rib 2 at the top of the packaging bag, causing the feed rib 2 to slowly insert into the fitting rib 2012 fixed at the bottom of the packaging bag. Therefore, during the process of inserting the bone 2 into the mortise 2012, the first locking strip 201 will automatically align with the first locking groove 2013 and gradually embed itself into the groove, while the second locking strip 2011 will simultaneously align with the second locking groove 2014 and embed itself into the groove, until the bone 2 is fully inserted into the mortise 2012. At this time, the first locking strip 201 and the first locking groove 2013, and the second locking strip 2011 and the second locking groove 2014 form a tight locking fit, constituting the first sealing structure of the sealing mechanism, which initially blocks the exchange of air and substances inside and outside the bag. After the first card strip 201 and the second card strip 2011 are fully embedded in the first card slot 2013 and the second card slot 2014 respectively, the insert rib 2 and the connecting rib 2012 form a stable integrated connection structure. At this time, the upper mold 1011 and the lower mold 1012 in the layering mechanism not only support the layered space inside the bag, but also disperse the external force on the main body 1 of the packaging bag. When the top or bottom of the main body 1 of the packaging bag is subjected to a tensile force, the upper mold 1011 and the lower mold 1012 will transmit the tensile force to the packaging bag. The overall structure of the bag body 1 avoids the tension being concentrated at the connection between the insert 2 and the connecting rib 2012; at the same time, the heat-sealing end 101 provides bidirectional protection for the initial seal of the left opening and the double-locking seal of the sealing mechanism. Even if the items inside the bag fall due to gravity and generate downward tension, the double-locking structure of the first locking strip 201 and the first locking groove 2013, and the second locking strip 2011 and the second locking groove 2014 can resist the tension, prevent the insert 2 from separating from the connecting rib 2012, and continuously maintain the sealed state of the packaging bag.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plastic packaging bag with double sealing, comprising a packaging bag body (1), characterized in that, The main body (1) of the packaging bag is fixedly installed with a sealing mechanism. The sealing mechanism includes an inlet bone (2), a first locking strip (201), a second locking strip (2011), a connecting bone (2012), a first locking groove (2013), and a second locking groove (2014). The inlet bone (2) is fixedly set at the top of the main body (1) of the packaging bag. The first locking strip (201) and the second locking strip (2011) are both fixedly set on the outer wall of the inlet bone (2). The connecting bone (2012) is fixedly set at the bottom of the main body (1) of the packaging bag. The first locking groove (2013) and the second locking groove (2014) are opened on the inner wall of the inlet bone (2).

2. A plastic packaging bag with double sealing according to claim 1, characterized in that, When the inserting bone (2) is inside the inserting bone (2012), the first locking strip (201) and the second locking strip (2011) are respectively inserted into the first locking slot (2013) and the second locking slot (2014).

3. A plastic packaging bag with double sealing according to claim 1, characterized in that, The sealing mechanism includes a first interlocking strip (2015) and an interlocking block (2016). The first interlocking strip (2015) is fixedly disposed at the top of the main body of the packaging bag (1), and the interlocking block (2016) is fixedly disposed at the bottom of the first interlocking strip (2015).

4. A plastic packaging bag with double sealing according to claim 3, characterized in that, The sealing mechanism includes a second interlocking strip (2017) and an interlocking groove (2018). The second interlocking strip (2017) is fixedly disposed at the bottom end of the main body of the packaging bag (1), and the interlocking groove (2018) is opened at one end of the second interlocking strip (2017).

5. A plastic packaging bag with double sealing according to claim 3, characterized in that, When the first interlocking strip (2015) is in a state of abutting against the second interlocking strip (2017), the interlocking block (2016) is inserted into the interlocking groove (2018).

6. A plastic packaging bag with double sealing according to claim 1, characterized in that, A layering mechanism is fixedly provided at one end of the main body (1) of the packaging bag. The layering mechanism includes a heat-sealing end (101), which is fixedly provided at the left opening of the main body (1) of the packaging bag.

7. A plastic packaging bag with double sealing according to claim 6, characterized in that, The layering mechanism includes an upper mold (1011) and a lower mold (1012), both of which are fixedly disposed at one end of the main body of the packaging bag (1).

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