A multi-opening packaging bag based on a double-hole clamp easy-to-tear opening composite bead structure

Abstract

This invention discloses a reusable packaging bag based on a double-hole clamped easy-tear composite strip structure. The bag has several easy-tear openings distributed from top to bottom on both sides of its body; each easy-tear opening has upper and lower openings forming a double-hole easy-pull structure; starting from the second pair of double holes, a strip is arranged at the center line of the upper hole of each pair of double holes. This invention utilizes the special structure of the double-hole clamped easy-tear opening and strip to design a reusable easy-tear packaging bag, enabling the solid material inside the bag to be easily used and sealed multiple times. When encountering a situation where the packaging bag is difficult to tear, the double holes on both sides of the first easy-tear opening can be torn open the bag; when the solid material is not completely used and the remaining solid material is located below the first strip, the packaging bag can be resealed using the strip. When it needs to be used again, simply tear the double holes on both sides of the second easy-tear opening to tear the bag; if the material is not completely used again and is located below the second strip, it can be sealed again with the strip, thus achieving efficient easy tearing and multiple opening and closing of the packaging bag while preventing contamination. Meanwhile, the present invention does not have a separate opening area, which saves on the use of packaging materials to a certain extent.

Description

Technical Field

[0001] This invention relates to a packaging bag, and more particularly to a multi-opening packaging bag based on a double-hole clamped easy-tear composite strip structure, which is especially suitable for situations where conventional easy-tear openings are difficult to open, and for solid materials that cannot be used up at once and need to be opened multiple times. Background Technology

[0002] In high-temperature, high-humidity, and slippery conditions with condensation on the bag surface, existing solid food packaging bags often fail to open properly when opened. This is because the packaging film softens at high temperatures, leading to tear stress failure, tear trajectory deviation, and bag breakage. In special environments such as wilderness rescue, rain and snow, muddy and slippery conditions, extreme cold, or other extreme environments, operators need to wear tactical gloves. Wet or contaminated hands are prone to slipping, reducing grip strength and making it difficult to effectively open conventional tear-off openings, let alone quickly open them with one hand without tools. Furthermore, in clean environments such as operating rooms, or in situations where disabled individuals have limbs that make it difficult to grip conventional tear-off openings, the packaging bag opening is difficult to tear. Even after tearing, if the bag cannot be effectively sealed, sand and rainwater can easily enter and contaminate the food, resulting in the remaining solid materials being easily contaminated. Meanwhile, conventional easy-tear packaging structures used in civilian applications are only suitable for room-temperature, dry environments and cannot adapt to the extreme and complex conditions of military fieldwork, exhibiting poor environmental adaptability and stability. Therefore, in special usage scenarios, packaging bags that can be resealable multiple times and are easily tearable become particularly important.

[0003] Existing easy-tear packaging bag designs often employ changes to the material on both sides of the tear opening to increase gripping friction, thereby increasing the tearing force. For example, patent application CN214029958U, entitled "An Easy-Tear Composite Bag," uses anti-slip sliders and anti-slip protrusions to prevent hand slippage when gripping the main body of the composite bag, thus avoiding difficulty in tearing. Patent application CN214825530U, entitled "An Easy-Tear Recyclable Polyethylene Packaging Bag," features finger grooves on the upper and lower sides of the tear opening to increase contact friction, making it easier to tear the packaging bag. Patent application CN213385562U, entitled "An Anti-Slip Composite Film and Anti-Slip Packaging Bag," uses an anti-slip coating on both sides of the tear opening to enhance friction and prevent slippage when tearing the packaging bag with wet hands or a small point of force. However, these types of designs can only increase the friction on both sides of the tear strip to a certain extent. When the force required to open the tear strip is large or the tear strip is contaminated with a smooth liquid, there is still a risk of slipping.

[0004] Furthermore, the patent application with authorization announcement number CN110902126A, entitled "A Self-Sealing and Reusable Packaging Bag," features a reusable and self-sealing design. This patent allows for multiple uses and sealing of liquid materials by setting several pairs of easily tear-off openings and pressure strips spaced apart in the spout area. However, the easily tear-off openings are all located in a separate spout area, which is narrower than the main body of the bag. This is convenient when the filling material is a liquid or semi-solid, but slightly inconvenient when the filling material is solid. Moreover, after multiple uses of solid material, the distance between the remaining solid material and the opening increases, further increasing inconvenience. Additionally, setting a separate opening area for the easily tear-off openings and pressure strips increases the opening area, resulting in waste of packaging material. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention, based on the existing packaging technology, utilizes the special design of the edge shape of the packaging bag and the pressure strip to design a multi-opening packaging bag based on a double-hole clamp easy-tear composite pressure strip structure, so as to achieve the effect of convenient use of solid materials and multiple sealing to prevent contamination.

[0006] To achieve the above objectives, the present invention provides a multi-opening packaging bag based on a double-hole easy-tear composite strip structure. The packaging bag contains four rows of solid materials. According to the number of solid materials, four pairs of easy-tear openings are arranged from top to bottom along the long sides of the left and right sides of the bag body. The easy-tear openings on the left and right sides are, in order, the first easy-tear opening, the second easy-tear opening, the third easy-tear opening, and the fourth easy-tear opening, located above each row of solid materials. Each easy-tear opening has openings on its upper and lower sides to form a pair of double-hole easy-pull structures, arranged in order as the first double hole, the second double hole, the third double hole, and the fourth double hole. Starting from the second pair of double holes, a pressure strip is arranged at the center line of the upper hole of each pair of double holes. The pressure strips are formed from left to right near the center line of the double holes on the upper side of the easy-tear opening of the packaging bag, and are arranged in sequence as the first pressure strip, the second pressure strip, and the third pressure strip. Solid material is sequentially filled between the sealing opening at the location of the first easy-tear opening, the first pressure strip, the second pressure strip, and the third pressure strip. After the first row of solid material is used up, the packaging bag is sealed with the first pressure strip. The bottom of the packaging bag is provided with a filling port for filling solid material. After filling, the filling port is sealed by a sealing machine.

[0007] Furthermore, the easy-tear openings are distributed approximately 0.5-1.0 cm above each row of solid materials, allowing for easy access to the solid materials within the packaging bag when the bag is torn open along each easy-tear opening.

[0008] The double-hole easy-pull structure with holes on the upper and lower sides of the easy-tear opening has a hole diameter of about 0.5-1.5 cm, which is convenient for hooking and pulling. When opening the packaging bag to use the first row of solid materials, hook your finger or other convenient tool into the two holes of the first pair of double holes on the same side and tear open the easy-tear opening.

[0009] Preferably, starting from the second pair of double holes, a pressure strip is arranged at the center line of the upper hole of each pair of double holes, namely the first pressure strip, the second pressure strip, and the third pressure strip; after the first row of solid material is used up, the first pressure strip is used to seal the packaging bag; when opening the packaging bag to use the second row of solid material, hook your finger or other convenient and hooked tool into the two holes of the second pair of double holes on the same side, and tear the packaging bag open by force, and so on, until the solid material in the packaging bag is used up.

[0010] Specifically, the bottom of the packaging bag is provided with a filling port for filling solid materials. After the solid materials are filled, the filling port is sealed by a sealing machine, thereby sealing the solid materials in the packaging bag. The size of the bag is adjusted according to the actual size of the solid materials.

[0011] Preferably, the easy-tear opening is located 0.5 cm above each row of solid material on both sides of the packaging bag; the double holes are hollow circular holes with an opening diameter of 1 cm; when in use, insert one finger into each pair of double holes, twist the double holes firmly, and tear the easy-tear opening by applying force in different directions.

[0012] The easy-tear opening, the double holes, and the pressure strip are designed in more than three sets. When using solid material for the Nth time, hook your finger or other convenient tool with a hook into the two holes of the Nth pair of double holes on the same side and tear it open. After using the solid material, seal the bag opening with the Nth pressure strip, where N>3.

[0013] Specifically, an upper sealing film and a lower sealing film are distributed on the upper and lower surfaces of each sealing strip. Guide seals are arranged on both sides of the upper and lower sealing films. The guide seals are connected to the upper and lower sealing films, and thus connected to the sealing strip. By squeezing the sealing strip from the outside along the guide seals, a perfect seal is achieved at the opening of the packaging bag.

[0014] When the packaging bag is torn open along the easy-tear opening, the upper and lower sealing films are stretched open, causing the opening to deform and bend to form a sealing channel that connects to the inner cavity of the packaging bag. The solid material is then removed from the sealing channel for the user to use. After the solid material is removed, the guide seals on both sides of the opening press the pressure strip from the outside, completing the perfect seal at the entrance and exit of the packaging bag opening.

[0015] The first pressure strip aligns with the upper hole of the second double hole at the corresponding position. After the packaging bag is filled with solid material, the pressure strip is opened by the solid material. The first pressure strip is a seal or a zipper. After the first two pieces of solid material are removed, there is no longer any solid material opening the first pressure strip, and a new opening is formed at the remaining food area of ​​the packaging bag. At this time, the first pressure strip is pressed to reseal the packaging bag.

[0016] The beneficial effects of this invention are as follows: This invention fully utilizes the unique double-hole shape design on both sides of the packaging bag to create an easy-tear structure. Combined with the structural features of the pressure strip, it achieves effective and rapid tearing of the easy-tear opening under special circumstances, as well as multiple openings and sealing of the packaging bag, while preventing contamination of solid materials in easily contaminated situations. The bag body gradually shortens with each use, ensuring convenient and quick access to solid materials each time it is opened; at the same time, the absence of a separate opening area saves packaging materials. When encountering special circumstances where it is difficult to tear the packaging bag, it can be torn open through the double holes; when the solid material in the packaging bag is not completely used up in one go, it can be resealed using the pressure strip. When it needs to be used again, simply tear the packaging bag along the subsequent double holes; if the solid material is not completely used up again, it can be resealed using the adjacent pressure strip, thereby achieving the effects of efficient easy tearing, multiple openings and closings to prevent contamination, and saving packaging materials. Attached Figure Description

[0017] The following figures are included as part of this invention to understand and explain the principles of the invention.

[0018] Figure 1 A schematic diagram of a preferred embodiment of a multi-opening packaging bag based on a double-hole clamp easy-tear composite pressure strip structure according to the present invention is shown.

[0019] Figure 2 A schematic diagram of the structure of a packaging bag according to a specific embodiment of the present invention in its use state is shown.

[0020] Figure 3 A schematic diagram of the packaging bag structure after the first tear opening is torn open when the packaging bag is used for the first time according to the present invention is shown.

[0021] Figure 4 A partial cross-sectional view of the opening area of ​​the packaging bag according to the present invention is shown.

[0022] Figure 5 A partial structural cross-sectional view of the opening area of ​​the packaging bag in the closed state according to the present invention is shown. Detailed Implementation

[0023] In the accompanying drawings, the same or similar reference numerals are used to denote the same or similar elements or elements having the same or similar functions. In the specific embodiments described below, exemplary embodiments of the invention will be described and illustrated in more detail with reference to the accompanying drawings.

[0024] This invention provides a multi-opening packaging bag based on a double-hole clamped easy-tear composite strip structure, which discloses the following technical content: several easy-tear openings are arranged from top to bottom on both sides of the long side of the packaging bag body; the number of easy-tear openings is set according to the number of solid materials arranged. For example, if there are four groups of solid materials in the packaging bag, the easy-tear openings are set on both sides of the long side of the packaging bag according to the number of solid materials arranged; corresponding to the four groups of solid materials, four pairs of easy-tear openings are set, namely the first easy-tear opening, the second easy-tear opening, the third easy-tear opening, and the fourth easy-tear opening, which are respectively located above each row of solid materials. Each tear-off opening has openings on both the top and bottom sides to form a pair of double-hole tear-off structures, namely, the first double hole, the second double hole, the third double hole, and the fourth double hole arranged in sequence. Starting from the second pair of double holes, a pressure strip is arranged at the center line of the upper hole of each pair of double holes. The pressure strips are formed from left to right at the center line of the upper hole of the tear-off opening of the packaging bag, and are arranged in sequence as the first pressure strip, the second pressure strip, and the third pressure strip. The bottom end of the packaging bag is provided with a filling port for filling solid materials. After the solid materials are filled, the filling port is sealed by a sealing machine to seal the solid materials in the packaging bag.

[0025] Figure 1 A schematic diagram of a preferred embodiment of a multi-opening packaging bag based on a double-hole clip easy-tear composite pressure strip structure according to the present invention is shown. Figure 1 In a specific embodiment, four easy-tear openings and four pairs of double-hole easy-pull structures are arranged on the long sides of the left and right sides of the packaging bag, namely, the first easy-tear opening 301, the second easy-tear opening 302, the third easy-tear opening 303, and the fourth easy-tear opening 304, and the first double hole 401, the second double hole 402, the third double hole 403, and the fourth double hole 404. Starting from the second double hole, a pressure strip is arranged near the center line of the upper hole of each double hole. After the operator fills the solid material through the filling port 600 at the bottom of the bag body 100, the solid material can be sealed in the packaging bag by the sealing machine. The pressure strip is formed from left to right near the center line of the upper hole of the easy-tear opening of the packaging bag; the bottom of the packaging bag body is provided with a filling port for filling solid material. After the solid material is filled, the filling port is sealed by the sealing machine to seal the solid material in the packaging bag.

[0026] Depend on Figure 1 Further details of the technical features of this invention can be revealed. Figure 1In a preferred embodiment, the packaging bag of the present invention can be filled with four groups of solid materials 201, 202, 203, and 204. A first easy-tear opening 301, a second easy-tear opening 302, a third easy-tear opening 303, and a fourth easy-tear opening 304 are respectively provided at the two side edges of the bag body 100, 0.5 cm above each group of solid materials. The packaging bag between the first easy-tear opening 301, the second easy-tear opening 302, the third easy-tear opening 303, and the fourth easy-tear opening 304 contains small square or small rectangular solid materials. Figure 1 The diagram illustrates the positional distribution of solid materials 201, 202, 203, and 204 within the packaging bag. Each of the aforementioned easy-tear openings has a first pair of double holes 401, a second pair of double holes 402, a third pair of double holes 403, and a fourth pair of double holes 404 on its upper and lower sides, respectively. These double holes are hollow circular holes. The function of each pair of double holes is to allow one finger to be inserted into each hole, firmly twisting it and applying force in different directions, thus tearing the easy-tear opening and achieving the beneficial effect of tearing the packaging bag even in extremely slippery conditions. Starting from the second pair of double holes 402, a first pressure strip 501, a second pressure strip 502, and a third pressure strip 503 are respectively arranged at the center line of the upper hole of each pair of the second pair of double holes 402, the third pair of double holes 403, and the fourth pair of double holes 404. These strips are used to reseal the packaging bag after each easy-tear opening is opened and food is removed. The first pressure strip 501, the second pressure strip 502, and the third pressure strip 503 are formed from left to right at the center line of the upper hole corresponding to the easy-tear opening on the packaging bag. This structural design of the first pressure strip 501, the second pressure strip 502, and the third pressure strip 503 can effectively press or seal the opening after each time the packaging bag is torn open, so that the uneaten food inside the packaging bag can be effectively kept fresh and preserved.

[0027] In one specific embodiment, taking the first pressure strip 501 as an example, the first pressure strip 501 is aligned with the upper holes of the second pair of double holes 402. Traditional food packaging bags have interlocking zippers, while the packaging bag of this invention has the first pressure strip 501 open when food is being packaged. This pressure strip can be a seal or a zipper, etc. When the packaging bag contains solid food materials, the pressure strip is opened by the food. Upon first consumption, after tearing open the first easy-tear opening 301, the first two pieces of solid material 201 can be removed for consumption. Figure 2 A schematic diagram of the packaging bag structure after the first tear-off opening 301 is torn open when the packaging bag according to the present invention is used for the first time is shown. Figure 2 As shown, upon first use, the first tear-off opening 301 is torn open along the sealing direction of the packaging bag, and the first set of solid materials 201 is removed. Combined with... Figure 1 and Figure 2As you can see, after the solid material 201 is placed into the packaging bag, the first sealing strip 501 is stretched open by the solid material 201. Similarly, when the packaging bag is full of food, the second sealing strip 502 and the third sealing strip 503 are also stretched open. After the first two pieces of solid material 201 are removed, there is no longer any food 201 stretching the sealing strip in the area of ​​the first sealing strip 501 of the packaging bag, and a new opening is formed where there is still food in the packaging bag. At this time, press down the first sealing strip 501 to reseal the packaging bag for later consumption.

[0028] Figure 3 A schematic diagram of the packaging bag structure after the second tear-off opening 302 is torn open during the second use of the packaging bag according to the present invention is shown. Figure 3 As shown, during the second use, the second easy-tear opening 302 is torn open along the sealing direction of the packaging bag, and the first and second groups of solid materials (201 and 202) have been removed.

[0029] In one specific embodiment, the solid material 201 can be a compressed biscuit, compressed block food, or flat chocolate pieces, etc. After the solid material 201 is removed, the opening is sealed by pressing and closing the sealing strip 501, thus ensuring that the food packaging bag is strictly sealed. Once sealed, the food inside the packaging bag cannot be opened again through the sealing strip 501, ensuring that the remaining food is effectively and strictly sealed. When the solid material 202 inside the packaging bag needs to be consumed a second time, the opening of the packaging bag needs to be torn open from the easy-tear opening 302, and it can only be torn open from the easy-tear opening 302. Similarly, the opening of easy-tear openings 303 and 304 and the sealing structure of sealing strips 502 and 503 are the same as in the consumption state. That is, after the easy-tear opening 302 is torn open, the solid material 202 is removed, and the packaging bag area at the originally open sealing strip 502 is pressed down, ensuring that the remaining solid material in the packaging bag is strictly and tightly sealed and preserved, thus effectively maintaining freshness and quality for future consumption.

[0030] In one specific scenario and application, the packaging bag and its easy-tear opening technology of the present invention are particularly suitable for environments with high winds and waves at sea, or harsh outdoor environments such as rain and snow. In a specific embodiment of the present invention, a double-hole easy-tear structure is provided on the upper and lower sides of the easy-tear opening to help the opening to be easily torn open even when the edges of the easy-tear opening are difficult to grasp due to strong winds, heavy rain, high waves, or slippery conditions, or when the easy-tear opening cannot be grasped due to arm disability, ensuring that the easy-tear opening 301-304 is easy to tear and allows for smooth removal of food for consumption. Figures 1 to 5 This section details the design and usage of each pair of double holes and the corresponding easy-tear opening. For example... Figure 1 As shown, a first pair of double holes 401, a second pair of double holes 402, a third easy-pull hole 403 and a fourth pair of double holes 404 are respectively provided on the upper and lower sides of each of the easy-tear openings (301, 302, 303, 304).

[0031] In practical use, the multi-opening packaging bag based on a double-hole easy-tear composite pressure strip structure of the present invention allows for the following steps: When using the solid material inside the bag for the first time, the packaging is torn open along the first easy-tear opening 301. After taking out or using the material, any unused solid material is sealed by the first pressure strip 501. When using the solid material inside the bag for the second time, the packaging is torn open along the second easy-tear opening 302. After taking out or using the material, any unused solid material is sealed by the second pressure strip 502. When using the solid material inside the bag for the third time, the packaging is torn open along the third easy-tear opening 303. After taking out or using the material, any unused solid material is sealed by the third pressure strip 503.

[0032] Similarly, in another alternative embodiment, the tear-off opening and the pressure strip are designed to be more than three pairs. When the solid material in the packaging bag is used for the Nth time, the fingers or a tool that is easy to use are hooked into the double holes of the Nth pair of double holes on the same side, and the Nth tear-off opening is opened by force. After taking out or using the material, the unused solid material in the packaging bag is sealed by the Nth pressure strip, where N>3.

[0033] Figure 4 A partial cross-sectional view of the opening of the packaging bag according to the present invention is shown. Figure 4 As shown, an upper sealing film 214 and a lower sealing film 215 are distributed at the entrance and exit points on the upper and lower surfaces of the opening, respectively, and guide seals 213 are distributed on both sides of the upper sealing film 214 and the lower sealing film 215 and connected to them. When the first easy-tear opening 301 is torn open, the opening is stretched open, and the user can directly obtain the solid material through the opening. When it is time to reseal after use, the first pressure strip 501 is used to seal the opening, thereby effectively sealing the solid material in the packaging bag. Figure 5 A partial cross-sectional view of the packaging bag opening in the closed state according to the present invention is shown.

[0034] The following is combined Figure 4 and Figure 5 Taking the first use of the solid material in the packaging bag as an example, the packaging is torn open along the first tear-off opening 301, and after taking out or using the material, the unused solid material in the packaging bag is sealed by the first pressure strip 501. The specific structure of the opening of a preferred embodiment of the present invention is described in detail below: like Figure 4As shown, after tearing the packaging bag along the easy-tear opening 301, the upper sealing film 214 and lower sealing film 215 on both sides of the opening area are stretched open, causing the opening area to deform and bend to form a sealing channel 211 that connects to the inner cavity of the packaging bag. In this way, the solid material inside the packaging bag can be taken out through this sealing channel 211 for the user to use. Figure 5 The diagram shows a partial structural effect after the opening is closed. After use, the user can squeeze the first pressure strip 501 from the outside through the guide seals 213 on both sides of the opening to complete the proper sealing of the entrance and exit of the packaging bag opening area.

[0035] In environments involving maritime navigation or floating, especially in high winds and rough seas, it's crucial to ensure that the remaining food inside the packaging is not contaminated by sand or seawater after some food has been removed. This requires the tear-open area to be effectively sealed shut, ensuring a tight seal that prevents air and water ingress. In such situations, the structural design of sealing strips such as 501, 502, and 503 is essential and important. These strips not only effectively reseal the packaging bag opening, preventing water ingress when the ship is submerged in seawater due to typhoons or other factors, but also maintain strict sealing and waterproofing even after multiple openings and uses.

[0036] The unique dual-hole structure and prominent function of this invention are specifically designed for applications such as maritime navigation or water rafting, as well as special circumstances where individuals with disabilities cannot operate with both hands. In one specific embodiment, the dual holes 401, 402, 403, and 404 are designed as hollow ring structures, allowing fingers to be inserted into the rings, hooked onto the ring structure, and torn open by pulling left and right. In another specific embodiment, combined with... Figure 1 As you can see, the double-hole designs 401-404 are hollow ring structures, allowing fingers to be inserted into the ring, hooked onto the ring structure, and easily torn open by tearing left and right. This structural design of double-hole designs 401, 402, 403, and 404 is well-suited for convenient use in extreme environments (such as long-distance sailing environments or special scenarios where arm disabilities prevent the user from holding the packaging bag opening).

[0037] This can also be understood as follows: without the double-hole 401, in rainy, snowy, or stormy weather, when the packaging bag gets wet and slippery at the opening, or even when the boat is unstable and the ship is rocking, opening the packaging bag would require a special design. The special structure of the double-hole 401 to 404 is specifically designed for these kinds of special application scenarios. When you need to eat the food inside the packaging bag in such a special situation, taking the second time eating as an example, you can hook your fingers around the double holes 402 on the top and bottom of the easy-tear opening 302 and pull back and forth to easily tear the easy-tear opening 302.

[0038] This invention was inspired by the pain point faced by sailors on ships performing important missions at sea. In situations where the hull is slippery due to rolling waves and prolonged work, they struggle to open food packaging to replenish their energy, unable to tear open the packaging normally. The invention specifically designed the sealing strip and double-hole structure and technical solution disclosed herein. This allows the invention to function effectively in extreme environments, such as long voyages, drifting on water, or situations where arm disabilities prevent the user from easily gripping the packaging opening. By inserting fingers into the double holes on either side of the tear-off opening and applying gentle pressure, the tear-off can be easily opened. After removing the food, the sealing strip can be easily pressed to effectively seal any new openings in the packaging, thus ensuring its effectiveness.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Those skilled in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-opening packaging bag based on a double-hole easy-tear composite pressure strip structure, characterized in that, The packaging bag contains four rows of solid materials. Based on the number of solid materials, four pairs of easy-tear openings are arranged from top to bottom along the long sides of the left and right sides of the bag. These easy-tear openings are designated as the first, second, third, and fourth easy-tear openings, located above each row of solid materials. Each easy-tear opening has openings on its upper and lower sides, forming a pair of double-hole easy-pull structures, arranged sequentially as the first double hole, second double hole, third double hole, and fourth double hole. Starting from the second double hole, the upper hole of each pair of double holes... A pressure strip is arranged at the center line. The pressure strips are formed from left to right near the center line of the double hole on the upper side of the easy-tear opening of the packaging bag, and are arranged in sequence as the first pressure strip, the second pressure strip and the third pressure strip. Solid material is filled in sequence between the sealing opening at the location of the first easy-tear opening, the first pressure strip, the second pressure strip and the third pressure strip. After the first row of solid material is used up, the packaging bag is sealed with the first pressure strip. The bottom of the packaging bag is provided with a filling port for filling solid material. After filling, the filling port is sealed by a sealing machine.

2. The packaging bag according to claim 1, characterized in that, The easy-tear openings are located approximately 0.5-1.0 cm above each row of solid materials. When the packaging bag is torn open along each easy-tear opening, the solid materials in the packaging bag can be taken from the nearest opening.

3. The packaging bag according to claim 1 or 2, characterized in that, The double holes arranged on the upper and lower sides of the easy-tear opening are preferably 0.5-1.5 cm in diameter to facilitate hooking and pulling. When opening the packaging bag to use the first row of solid materials, hook your fingers or other convenient tools into the two holes of the first pair of double holes on the same side and tear open the easy-tear opening with force.

4. The packaging bag according to claim 1 or 2, characterized in that, When opening the packaging bag to use the second row of solid material, hook your finger or other easy-to-use tool with a hook into the two holes of the second pair of double holes on the same side, and tear it open. Repeat this process until all the solid material in the packaging bag is used up.

5. The packaging bag according to claim 1, characterized in that, The bottom of the packaging bag is provided with a filling port for filling solid materials. After the solid materials are filled, the filling port is sealed by a sealing machine, thereby sealing the solid materials in the packaging bag. The size of the bag is adjusted according to the actual size of the solid materials.

6. The packaging bag according to claim 1, characterized in that, The easy-tear opening is located 0.5cm above each row of solid material on both sides of the packaging bag; the double holes are hollow circular holes with an opening diameter of 1cm; when in use, insert one finger into each pair of double holes, twist the double holes firmly, and tear the easy-tear opening by applying force in different directions.

7. The packaging bag according to claim 1, characterized in that, The easy-tear opening, the double holes, and the pressure strip are designed in more than three sets. When using solid material for the Nth time, hook your finger or other convenient tool with a hook into the two holes of the Nth pair of double holes on the same side and tear it open. After using the solid material, seal the bag opening with the Nth pressure strip, where N>3.

8. The packaging bag according to claim 1, characterized in that, Each of the pressure strips has an upper sealing film and a lower sealing film distributed on its upper and lower sides. Guide seals are arranged on both sides of the upper and lower sealing films. The guide seals are connected to the upper and lower sealing films, and thus connected to the pressure strips. By squeezing the pressure strips from the outside along the guide seals, the opening of the packaging bag is properly sealed.

9. The packaging bag according to claim 8, characterized in that, When the packaging bag is torn open along the easy-tear opening, the upper and lower sealing films are stretched open, causing the opening to deform and bend to form a sealing channel that connects to the inner cavity of the packaging bag. The solid material is then removed from the sealing channel for the user to use. After the solid material is removed, the guide seals on both sides of the opening press the pressure strip from the outside, completing the perfect seal at the entrance and exit of the packaging bag opening.

10. The packaging bag according to claim 1, characterized in that, The first pressure strip aligns with the upper hole of the second double hole at the corresponding position. After the packaging bag is filled with solid material, the pressure strip is opened by the solid material. The first pressure strip is a seal or a zipper. After the first two pieces of solid material are removed, there is no longer any solid material opening the first pressure strip, and a new opening is formed at the remaining food area of ​​the packaging bag. At this time, the first pressure strip is pressed to reseal the packaging bag.

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