A stand-up pouch with pre-cut tear lines

Abstract

The utility model discloses a kind of self-standing bags with pre-cutting tear line, more particularly in the technical field of self-standing bag, including bag body, bag body is narrow in upper and wide trapezoidal structure in lower, the side of bag body is set as open, bag body is made of flexible transparent polyethylene material, the inner wall of bag body is fixedly provided with concave seal bar and convex seal bar, concave seal bar is set opposite at convex seal bar, the side of bag body is provided with tear line structure, tear line structure includes the long microperforation line of being set in the concave seal bar and the convex seal bar side of bag body, the side of long microperforation line is fixedly provided with auxiliary indentation line.The long microperforation line, short microperforation line in the utility model can satisfy different access requirements, auxiliary indentation line ensures that tearing direction is accurate, easy to tear opening does not need tool to open, overall improves use convenience and adaptability, and it is convenient to take operation, and also improve sealing.

Description

Technical Field

[0001] This utility model relates to the field of stand-up pouch technology, and more specifically, to a stand-up pouch with a pre-cut tear line. Background Technology

[0002] Self-sealing bags are a common type of simple plastic sealing bag in daily life. They are effective in preventing oxidation of smaller items. They are also lightweight and easy to use. Existing self-sealing bags usually have a snap-on or zipper-type sealing component at the top of the bag to achieve the sealing function.

[0003] However, this production method only produces self-sealing bags of the same size each time. Self-sealing bags of different sizes can only be processed separately in subsequent processing steps and transportation, which is inefficient. Moreover, as user needs continue to increase, it is often necessary to purchase self-sealing bags of matching sizes to meet different packaging requirements.

[0004] A search revealed that Chinese patent CN211002593U discloses a novel self-sealing bag with a tear line. This mechanism can connect at least two bags of different sizes to form a separable integrated structure through the tear line, facilitating simultaneous processing, packaging, and transportation, simplifying management, and improving efficiency. On the other hand, different sizes of bags can simultaneously meet different packaging needs of users, facilitating product storage and management. When users choose to use the bags separately, they can also easily separate the bags along the tear line, making it convenient and practical.

[0005] However, in actual use, although the structure can connect bags of different sizes through tear lines to facilitate processing and transportation, in daily use scenarios, although there are tear lines, the path is single. A single tear line often results in an excessively large opening, causing the remaining items inside the bag to be exposed to the air for a long time, accelerating moisture absorption and oxidation, which greatly affects the shelf life and quality of the items, making it difficult to meet different usage needs. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a stand-up pouch with a pre-cut tear line to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A stand-up pouch with a pre-cut tear line includes a bag body, which has a trapezoidal structure that is narrower at the top and wider at the bottom. One side of the bag body is set as an opening. The bag body is made of flexible transparent polyethylene material. A concave sealing strip and a convex sealing strip are fixedly provided on the inner wall of the bag body. The concave sealing strip is located opposite the convex sealing strip. A tear line structure is provided on one side of the bag body.

[0009] The tear line structure includes a long micro-perforated line on one side of the concave and convex sealing strips of the bag body. An auxiliary indentation line is fixedly provided on one side of the long micro-perforated line. A short micro-perforated line is provided on one side of the long micro-perforated line on the surface of the bag body. An easy-tear opening is provided at the intersection of the long micro-perforated line and the short micro-perforated line on one side edge of the bag body.

[0010] By adopting the above technical solution, it is not only convenient to handle and operate, but also allows for clear observation of the internal situation. Moreover, the long and short micro-perforated lines can meet different handling needs, the auxiliary indentation lines ensure accurate tearing direction, and the easy-tear opening allows for opening without tools, thus improving the overall ease of use and adaptability.

[0011] As a further description of the above technical solution: a stop plate is fixedly provided on one side edge of the bag body, and two protruding rings are fixedly provided on one side of the stop plate;

[0012] The surface of the convex ring is provided with a snap ring, and a rubber layer is fixedly provided on the surface of the convex ring.

[0013] By adopting the above technical solution, it can not only prevent accidental loosening during transportation or storage, but also facilitate easy disassembly by users, thus taking into account both practicality and ease of operation.

[0014] As a further description of the above technical solution: a temperature-sensitive ink strip is fixedly provided on one side of both the concave and convex sealing strips on the surface of the bag body, and the size of the temperature-sensitive ink strip is the same as that of the concave and convex sealing strips;

[0015] A bottom reinforcing membrane is fixedly provided on the side of the bag body away from the opening end, and the bottom reinforcing membrane is made of polypropylene.

[0016] A coating film is fixedly disposed on the surface of the bag body, and the coating film is made of fluorosilicone copolymer emulsion material.

[0017] By adopting the above technical solution, users can quickly determine whether the seal is qualified through color change, avoiding the contents from deteriorating due to poor sealing. Moreover, the bag structure can achieve reliable self-standing and facilitate the handling of items with both hands.

[0018] The technical effects and advantages of this utility model are as follows:

[0019] 1. This utility model adopts a tear line structure. By optimizing the design of the tear line structure, it brings multiple practical benefits. When not in use, the buckle engages with the convex ring. The rubber layer of the convex ring increases friction, allowing the buckle to securely cover the easy-tear opening. This can prevent the impact of squeezing and friction on the easy-tear opening, avoid accidental opening, and improve storage safety. When in use, simply pull the buckle upward to disengage from the convex ring and quickly expose the easy-tear opening. The operation is simple and requires no tools, making it easy for the elderly and children to use. It also features a dual path of long and short micro-perforated lines, along with auxiliary indentation lines to guide the direction. The full opening can accommodate large items, while small-volume retrieval reduces the contact between the contents and air, balancing practicality and freshness. In addition, the bag body is made of flexible transparent polyethylene material combined with a micro-perforated structure, making tearing smooth and effortless. The bag opening is flat and burr-free, ensuring ease and comfort of use.

[0020] 2. In addition to optimizing the tear line structure, this utility model features a bottom reinforcing film made of polypropylene material at the bottom of the bag that naturally unfolds and provides support. Combined with a "narrower at the top and wider at the bottom trapezoidal structure," the bag can stand upright without being held by hand, making it convenient to pick up and put in items with both hands. Its transparency also makes it easy to observe the internal filling. Furthermore, the fluorosilicone copolymer emulsion coating film on the surface of the bag supports repeated writing and marking of the contents with markers and pencils, facilitating quick identification. After taking out the contents, aligning the concave and convex sealing strips and pressing them together causes the convex sealing strip to embed into the concave sealing strip, forming a sealing barrier that prevents air and moisture from entering. By observing the color of the temperature-sensitive ink strip, the sealing status can be intuitively judged, ensuring a qualified seal and further guaranteeing the quality of the stored contents. Attached Figure Description

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

[0022] Figure 2 This is a schematic diagram of the overall front view of the present invention.

[0023] Figure 3 This is a schematic diagram of the tear line structure of this utility model.

[0024] Figure 4 This is a side view cross-sectional diagram of the tear line structure of this utility model.

[0025] Figure 5 This is a schematic diagram of the overall disassembled structure of this utility model.

[0026] The attached diagram is labeled as follows: 1. Bag body; 2. Concave sealing strip; 3. Convex sealing strip; 4. Long micro-perforation line; 5. Auxiliary indentation line; 6. Short micro-perforation line; 7. Easy-tear opening; 8. Backing plate; 9. Convex ring; 10. Clip ring; 11. Temperature-sensitive ink strip; 12. Bottom reinforcing film; 13. Coated film. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The embodiments disclosed in this application are as follows: Figure 1-5 The stand-up pouch shown includes a bag body 1, which has a trapezoidal structure that is narrower at the top and wider at the bottom. One side of the bag body 1 is set as an opening. The bag body 1 is made of flexible transparent polyethylene material. A concave sealing strip 2 and a convex sealing strip 3 are fixedly provided on the inner wall of the bag body 1. The concave sealing strip 2 is located opposite the convex sealing strip 3. A tear line structure is provided on one side of the bag body 1.

[0029] The tear line structure includes a long micro-perforated line 4 on one side of the concave sealing strip 2 and the convex sealing strip 3 of the bag body 1. An auxiliary indentation line 5 is fixedly provided on one side of the long micro-perforated line 4. A short micro-perforated line 6 is provided on one side of the long micro-perforated line 4 on the surface of the bag body 1. An easy-tear opening 7 is provided at the intersection of the long micro-perforated line 4 and the short micro-perforated line 6 on one side edge of the bag body 1.

[0030] If you need to open the bag completely, such as when putting in or taking out large items, pinch the easy-tear opening 7 and pull along the long micro-perforation line 4. The long micro-perforation line 4 is the preset main tear track. With the auxiliary indentation line 5 on the surface of the bag body 1, the auxiliary indentation line 5 can guide the tearing direction and avoid deviating from the track. The opening end of the bag body 1 can be quickly torn open completely along the long micro-perforation line 4 to expose the opening area inside the concave sealing strip 2 and the convex sealing strip 3.

[0031] If a small amount is needed, such as snacks or seasonings, pinch the easy-tear opening 7 and pull along the short micro-perforation line 6. The short micro-perforation line 6 is a short-track tearing path, which only opens a partial opening of the bag body 1, reducing the contact between the contents and air, and at the same time avoiding the long micro-perforation line 4 being accidentally torn.

[0032] Whether you choose the long micro-perforation line 4 or the short micro-perforation line 6, the bag body 1 is made of flexible transparent polyethylene material, which, combined with the micro-perforation structure, allows for tearing without jamming or effort. After tearing, the bag opening edge is smooth and there are no burr residues.

[0033] Reference Figure 2-3 As shown, a stop plate 8 is fixedly provided on one side edge of the bag body 1, and two protruding rings 9 are fixedly provided on one side of the stop plate 8;

[0034] The surface of the protruding ring 9 is provided with a snap ring 10, and a rubber layer is fixedly provided on the surface of the protruding ring 9.

[0035] When not in use, the retaining ring 10 is snapped into the surface of the protruding ring 9. At the same time, a rubber layer is fixed on the surface of the protruding ring 9 to increase friction and fix the retaining ring 10 on the tear line track, covering the easy-tear area 7 to avoid accidental tearing caused by squeezing and friction.

[0036] When using the bag, the user first observes the surface of the bag body 1, pulls the buckle 10 upwards, and removes the buckle 10 from the surface of the protruding ring 9, thus exposing the easy-tear opening 7, which prevents accidental opening and is easy to operate. The easy-tear opening 7 is located as the tearing starting point and can be directly pinched with the fingers without the need for tools.

[0037] Reference Figure 4-5 As shown, a temperature-sensitive ink strip 11 is fixedly provided on one side of the concave sealing strip 2 and the convex sealing strip 3 on the surface of the bag body 1. The size of the temperature-sensitive ink strip 11 is the same as that of the concave sealing strip 2 and the convex sealing strip 3.

[0038] A bottom reinforcing film 12 is fixedly installed on the side of the bag body 1 away from the opening end. The bottom reinforcing film 12 is made of polypropylene.

[0039] A coating film 13 is fixedly provided on the surface of the bag body 1. The coating film 13 is made of fluorosilicone copolymer emulsion material.

[0040] When bag 1 is placed on a flat surface, the bottom reinforcing membrane 12 at the bottom of bag 1 is made of polypropylene. Its hardness is higher than that of the main body of bag 1. It will naturally unfold and maintain a supporting state. Because bag 1 is a trapezoidal structure that is narrow at the top and wide at the bottom, the bottom reinforcing membrane 12 can provide stable support, so that bag 1 can stand up without being held by hand. This makes it convenient for users to use both hands to take out or put in the contents. At the same time, the transparency makes it easy for users to observe the contents of the bag.

[0041] The coating film 13 on the surface of the bag body 1 is made of fluorosilicone copolymer emulsion material, which supports repeated writing with markers and pencils, and can mark information such as the name of the contents, storage date, and shelf life, so that users can quickly identify the items in the bag.

[0042] After taking out or putting in the bag, align the concave sealing strip 2 and the convex sealing strip 3 on the inner wall of the bag body 1, and press along the length of the sealing strip with your fingers. The convex sealing strip 3 will be embedded in the groove of the concave sealing strip 2, forming the first sealing barrier to prevent air and moisture from entering the interior of the bag body 1.

[0043] After pressing the sealing strip, observe the temperature-sensitive ink strip 11 on the surface of the bag body 1. If the temperature-sensitive ink strip 11 changes completely from the initial white to blue and the color is uniform, it indicates that the concave sealing strip 2 and the convex sealing strip 3 are properly engaged and the seal is qualified.

[0044] If the temperature-sensitive ink strip 11 remains white in some areas, it indicates that the corresponding area is not properly sealed. You need to press the area again until the temperature-sensitive ink strip 11 changes color completely.

[0045] Working principle of this utility model:

[0046] This utility model is a stand-up pouch with a pre-cut tear line. When the device is in use, the buckle 10 is engaged with the surface of the protruding ring 9. At the same time, a rubber layer is fixed on the surface of the protruding ring 9 to increase friction, so that the buckle 10 is fixed on the tear line track, covering the easy-tear area 7, and avoiding accidental tearing caused by squeezing and friction.

[0047] When using it, the user first observes the surface of the bag body 1, pulls the buckle 10 upwards, and removes the buckle 10 from the surface of the protruding ring 9 to expose the easy-tear opening 7, which prevents accidental opening and is easy to operate. The easy-tear opening 7 is the starting point for tearing and can be directly pinched with the fingers without the need for tools.

[0048] If you need to open the bag completely, such as when putting in or taking out large items, pinch the easy-tear opening 7 and pull along the long micro-perforation line 4. The long micro-perforation line 4 is the preset main tear track. With the auxiliary indentation line 5 on the surface of the bag body 1, the auxiliary indentation line 5 can guide the tearing direction and avoid deviating from the track. The opening end of the bag body 1 can be quickly torn open completely along the long micro-perforation line 4 to expose the opening area inside the concave sealing strip 2 and the convex sealing strip 3.

[0049] If a small amount is needed, such as snacks or seasonings, pinch the easy-tear opening 7 and pull along the short micro-perforation line 6. The short micro-perforation line 6 is a short-track tearing path, which only opens a partial opening of the bag body 1, reducing the contact between the contents and air, and at the same time avoiding the long micro-perforation line 4 being accidentally torn.

[0050] Whether you choose the long micro-perforation line 4 or the short micro-perforation line 6, the bag body 1 is made of flexible transparent polyethylene material, which, combined with the micro-perforation structure, allows for tearing without jamming or effort. After tearing, the bag opening edge is smooth and there are no burr residues.

[0051] When bag 1 is placed on a flat surface, the bottom reinforcing membrane 12 at the bottom of bag 1 is made of polypropylene. Its hardness is higher than that of the main body of bag 1. It will naturally unfold and maintain a supporting state. Because bag 1 is a trapezoidal structure that is narrow at the top and wide at the bottom, the bottom reinforcing membrane 12 can provide stable support, so that bag 1 can stand up without being held by hand. This makes it convenient for users to use both hands to take out or put in the contents. At the same time, the transparency makes it easy for users to observe the contents of the bag.

[0052] The coating film 13 on the surface of the bag body 1 is made of fluorosilicone copolymer emulsion material, which supports repeated writing with markers and pencils, and can mark information such as the name of the contents, storage date, and shelf life, so that users can quickly identify the items in the bag.

[0053] After taking out or putting in the bag, align the concave sealing strip 2 and the convex sealing strip 3 on the inner wall of the bag body 1, and press along the length of the sealing strip with your fingers. The convex sealing strip 3 will be embedded in the groove of the concave sealing strip 2, forming the first sealing barrier to prevent air and moisture from entering the interior of the bag body 1.

[0054] After pressing the sealing strip, observe the temperature-sensitive ink strip 11 on the surface of the bag body 1. If the temperature-sensitive ink strip 11 changes completely from the initial white to blue and the color is uniform, it indicates that the concave sealing strip 2 and the convex sealing strip 3 are properly engaged and the seal is qualified.

[0055] If the temperature-sensitive ink strip 11 remains white in some areas, it indicates that the corresponding area is not properly sealed. You need to press the area again until the temperature-sensitive ink strip 11 changes color completely.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stand-up pouch with a pre-cut tear line, comprising a pouch body (1), characterized in that: The bag body (1) has a trapezoidal structure that is narrow at the top and wide at the bottom. One side of the bag body (1) is set as an opening. The bag body (1) is made of flexible transparent polyethylene material. The inner wall of the bag body (1) is fixedly provided with a concave sealing strip (2) and a convex sealing strip (3). The concave sealing strip (2) is set opposite to the convex sealing strip (3). One side of the bag body (1) is provided with a tear line structure. The tear line structure includes a long micro-perforated line (4) on one side of the concave sealing strip (2) and convex sealing strip (3) of the bag body (1), an auxiliary indentation line (5) is fixedly provided on one side of the long micro-perforated line (4), a short micro-perforated line (6) is provided on one side of the long micro-perforated line (4) on the surface of the bag body (1), and an easy-tear opening (7) is provided at the intersection of the edge of one side of the bag body (1) with the long micro-perforated line (4) and the short micro-perforated line (6).

2. The stand-up pouch with pre-cut tear lines according to claim 1, characterized in that: A stop plate (8) is fixedly provided on one side edge of the bag body (1), and two protruding rings (9) are fixedly provided on one side of the stop plate (8).

3. The stand-up pouch with pre-cut tear lines according to claim 2, characterized in that: The surface of the protruding ring (9) is provided with a snap ring buckle (10), and a rubber layer is fixedly provided on the surface of the protruding ring (9).

4. The stand-up pouch with pre-cut tear lines according to claim 1, characterized in that: A temperature-sensitive ink strip (11) is fixedly provided on one side of the concave sealing strip (2) and the convex sealing strip (3) on the surface of the bag body (1). The size of the temperature-sensitive ink strip (11) is the same as that of the concave sealing strip (2) and the convex sealing strip (3).

5. The stand-up pouch with pre-cut tear lines according to claim 1, characterized in that: A bottom reinforcing membrane (12) is fixedly provided on the side of the bag body (1) away from the opening end. The bottom reinforcing membrane (12) is made of polypropylene.

6. The stand-up pouch with pre-cut tear lines according to claim 1, characterized in that: The surface of the bag (1) is fixedly provided with a coating film (13), which is made of fluorosilicone copolymer emulsion material.

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