Improved structure of plastic bag body

Abstract

The utility model provides an improved structure of a plastic bag body, which comprises a bag body, an opening side is formed at one end of the bag body in the length direction and is provided with a clamping chain for sealing, and hot melting sealing edges are formed on other side edges, independent of the opening side, of the bag body; the pair of connecting sheets comprises a sheet-shaped main body capable of being folded, the two side edges of the sheet-shaped main body are respectively welded on the two surfaces of one hot melting sealing edge on the width side of the bag body in a hot melting manner, and the two connecting sheets are respectively arranged at the two ends of the hot melting sealing edge in the length direction; according to the novel PE packaging bag, the defects of a traditional PE packaging bag in the aspects of load bearing, opening convenience and sealing performance are overcome, the overall strength of the packaging bag is fully improved, and the novel PE packaging bag is more stable and durable.

Description

Technical Field

[0001] The utility model relates to the technical field of PE packaging bags, in particular to an improved structure of a plastic bag body. Background Art

[0002] In the current PE (polyethylene) packaging bag market, although there are a variety of packaging solutions, the optimization of handle design still faces challenges. The traditional handle design is often located at the opening of the packaging bag. This layout not only limits the convenience of the packaging bag opening and affects the quick access to the contents, but may also cause the sealing to be damaged due to the proximity of the handle structure to the opening. In addition, the connection process between the handle and the bag body mostly relies on simple thermal welding technology. Although this connection method is low-cost and easy to operate, its bonding strength becomes a major shortcoming, especially when loading heavier items, it is easy to cause the handle to tear off, reducing the overall durability of the packaging bag and the safety of users.

[0003] Existing handle materials are mostly made of plastic sheets. Although this type of material is light and easy to process, it has limitations in load-bearing performance. Especially when used multiple times or carrying a weight exceeding the expected weight, the handle is prone to deformation or even breakage, further limiting the reuse potential of the packaging bag and consumer experience.

[0004] Therefore, there is an urgent need for an innovative handle design and connection technology, which aims to improve the connection strength between the handle and the PE packaging bag body, while ensuring that the handle design does not interfere with the basic functions of the packaging bag, especially to ensure barrier-free use of the opening and maintain good sealing performance.

[0005] In view of this, the inventor specially designed an improved structure of a plastic bag body, and this case was thus generated. Utility Model Content

[0006] In order to solve the above problems, the technical solution of the utility model is as follows:

[0007] An improved structure of a plastic bag body, comprising:

[0008] The bag body has an opening at one end in the length direction and is provided with a clip chain for sealing, and the remaining side edges independent of the opening side are formed into hot-melt sealed edges;

[0009] A pair of connecting sheets, comprising a foldable sheet body, both sides of which are respectively heat-melted and welded to the two sides of one of the heat-melt sealed edges on the width side of the bag body, and the two connecting sheets are respectively arranged at the two ends of the heat-melt sealed edge in the length direction;

[0010] The handle is detachably connected between the two connecting pieces.

[0011] Preferably, the sheet-like body comprises a front sheet, a rear sheet and a bending sheet integrally connected between the front sheet and the rear sheet, the front sheet and the rear sheet are symmetrically distributed about the bending sheet and both are penetrated by mounting holes which are located opposite to each other.

[0012] Preferably, transition chamfers with the same radius are provided on the sides of the front piece and the rear piece where they are close to each other and at the corner positions.

[0013] Preferably, the sides of the front sheet and the rear sheet which are away from each other form a welding edge which is opposite to the hot-melt sealed edge.

[0014] Preferably, the two ends of the handle are detachably connected to the two mounting holes of the sheet-like body in a superimposed state through a fastening piece.

[0015] Preferably, the fastener includes a left fastener and a right fastener that are symmetrically arranged on the left and right sides, the middle part of the left fastener close to the right fastener protrudes to form a fastening portion, the corresponding position of the right fastener forms a fastening groove that can be snap-fitted with the fastening portion, and the outer peripheral edge of the fastening portion is gap-fitted with the mounting hole.

[0016] Preferably, a hollow groove having a diameter smaller than the mounting hole is horizontally opened in the middle of the left fastener and the right fastener.

[0017] Preferably, the end of the buckling portion away from the left buckle is convex along its circumference to form a ring-shaped limiting portion, and the buckling groove is provided with a matching groove at a corresponding position.

[0018] Preferably, the handle comprises a flexible rope body and thin sheet-shaped connecting rings provided at both ends of the flexible rope body, and a through groove adapted to the outer diameter of the buckling portion is formed on the inner side of the connecting ring.

[0019] Preferably, the handle is an integrally formed silicone rope or polyurethane rope, and the flexible rope body includes an embedded reinforced nylon rope and an integrally formed adhesive layer on the outside of the reinforced nylon rope.

[0020] The beneficial effects of the utility model are as follows:

[0021] The connecting piece of the utility model adopts a sheet-like main body design that can be folded in half. By hot-melt welding the two sides of the sheet-like main body to the two sides of the hot-melt sealed edge on one side of the width of the bag body, the connection strength between the handle and the bag body can be significantly enhanced, and the force on the handle can be fully dispersed. Even when loading heavy items, the handle can be effectively prevented from being torn off, thereby improving the durability of the packaging bag.

[0022] In addition, the utility model moves the handle design to the side of the bag body, away from the traditional opening position, ensuring barrier-free use of the packaging bag opening, while also avoiding interference of the handle structure with the sealing.

[0023] In particular, the detachable connection between the handle and the mounting hole through the fastener not only facilitates the user to replace or adjust the handle according to actual needs, but also facilitates the storage and reuse of the packaging bag, thereby improving the user experience and the practicality of the packaging bag.

[0024] In addition, the design of the transition chamfer reduces the risk of wear and tear on the edges and improves comfort during use; the exquisite coordination between the buckle part and the buckle groove, as well as the design of the limit part and the matching groove, ensures the firm connection of the handle and facilitates quick operation by the user.

[0025] In particular, the handle adopts one-piece silicone rope or polyurethane rope with embedded reinforced nylon rope. This design not only maintains the light and soft characteristics, but also greatly enhances the load-bearing capacity. At the same time, it takes into account the durability and environmental friendliness of the material, which is in line with the trend of modern sustainable development.

[0026] In summary, the utility model solves the deficiencies of traditional PE packaging bags in terms of load-bearing, opening convenience and sealing, fully improves the overall strength of the packaging bag, and makes it more stable and durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0028] in:

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a schematic diagram of the unfolded structure of the connecting piece of the utility model;

[0031] Figure 3 It is a structural diagram of the handle in the utility model;

[0032] Figure 4 It is a schematic diagram of a partial explosion structure of a fastening member in the utility model;

[0033] Figure 5 It is a partial explosion and cross-sectional structural schematic diagram of the fastening member in the utility model;

[0034] Figure 6 It is one of the partial structural schematic diagrams of the handle in the utility model;

[0035] Figure 7 This is the second schematic diagram of the partial structure of the handle in the utility model;

[0036] Figure 8It is a partial cross-sectional structural schematic diagram of the handle in the utility model.

[0037] Description of labels:

[0038] 10. Bag body; 11. Open side; 12. Clip chain; 13. Hot-melt edge sealing; 14. Easy-tear notch; 20. Connecting piece; 21. Sheet body; 22. Front piece; 23. Back piece; 24. Bending piece; 25. Mounting hole; 26. Transition chamfer; 27. Welding edge; 30. Handle; 31. Flexible rope body; 311. Reinforced nylon rope; 312. Adhesive layer; 32. Connecting ring; 321. Through groove; 40. Fastener; 50. Left fastener; 51. Fastening part; 52. Limiting part; 60. Right fastener; 61. Fastening groove; 62. Matching groove; 70. Hollow groove; 80. Arc-shaped transition surface. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] See also Figures 1 to 8 , is a plastic bag body improvement structure as the best embodiment of the utility model, comprising:

[0041] The bag body 10 is in a rectangular shape, one end of which in the length direction forms an opening side 11 and is provided with a clip chain 12 for sealing, and the remaining side edges independent of the opening side 11 form hot-melt sealing edges 13, and the two sides of the bag body 10 located at the opening side 11 are symmetrically provided with easy-tear notches 14;

[0042] A pair of connecting pieces 20, including a foldable sheet body 21, both sides of which are respectively heat-melted and welded to the two sides of one of the heat-melt sealed edges 13 on the width side of the bag body 10, and the two connecting pieces 20 are respectively arranged at both ends of the heat-melt sealed edge 13 in the length direction;

[0043] The handle 30 is detachably connected between the two connecting pieces 20 .

[0044] Preferably, Figure 1 , 2As shown, the sheet-like main body 21 includes a front sheet 22 and a rear sheet 23 in the form of a thin sheet, and a bending sheet 24 integrally connected between the front sheet 22 and the rear sheet 23. The front sheet 22 and the rear sheet 23 are symmetrically distributed about the bending sheet 24 and both penetrate through with mounting holes 25 which are located opposite to each other. During installation, the front sheet 22 and the rear sheet 23 are folded in half about the bending sheet 24 so that the two mounting holes 25 are aligned, and the bottoms of the front sheet 22 and the rear sheet 23 are respectively hot-melt welded to two different surfaces of the same hot-melt edge seal 13. Thus, the connection strength between the handle 30 and the bag body 10 is significantly enhanced through the two rectangular connecting surfaces formed between the front sheet 22, the rear sheet 23 and the hot-melt edge seal 13, and the force on the handle 30 is fully dispersed. Even when heavy items are loaded, the handle 30 can be effectively prevented from being torn off, thereby improving the durability of the packaging bag.

[0045] Preferably, Figure 2 As shown, the front piece 22 and the back piece 23 are both provided with transition chamfers 26 with the same radius at the corner positions on one side close to each other. The design of the transition chamfers 26 reduces the risk of edge wear and tear and improves comfort during use.

[0046] Preferably, Figure 2 As shown, the side of the front piece 22 and the rear piece 23 that are away from each other forms a welding edge 27 opposite to the hot melt edge seal 13. In this embodiment, the overall thickness of the front piece 22 and the rear piece 23 is less than half of the thickness of the hot melt edge seal 13, thereby facilitating the connection and fixation between the front piece 22, the rear piece 23 and the hot melt edge seal 13.

[0047] Preferably, Figure 1 As shown, the two ends of the handle 30 are detachably connected to the two mounting holes 25 of the sheet-like body 21 in the overlapped state through the fastening parts 40 .

[0048] Specifically, Figure 3 , 4 As shown in Figures 5 and 6, the fastening member 40 includes a left fastener 50 and a right fastener 60 which are symmetrically arranged on the left and right sides. The middle part of the left fastener 50 close to the right fastener 60 protrudes to form a fastening portion 51, and a fastening groove 61 which can be snap-fitted with the fastening portion 51 is formed at the corresponding position of the right fastener 60. The outer peripheral edge of the fastening portion 51 is gap-fitted with the mounting hole 25. The middle parts of the left fastener 50 and the right fastener 60 are both horizontally provided with a hollow groove 70 with a diameter smaller than the mounting hole 25. One end of the fastening portion 51 away from the left fastener 50 protrudes outward along its circumference to form a ring-shaped limiting portion 52. The fastening groove 61 is provided with a matching groove 62 at the corresponding position. The exquisite matching of the fastening portion 51 and the fastening groove 61, as well as the design of the limiting portion 52 and the matching groove 62, ensure the stable connection of the handle 30 and facilitate quick operation by the user.

[0049] like Figure 4 , 5As shown, in this embodiment, arc-shaped transition surfaces 80 are provided on the sides of the left fastener 50 and the right fastener 60 that are away from each other and located at the peripheral edges thereof, so as to facilitate the user to perform the fastening operation.

[0050] Preferably, Figure 3 , 6 As shown in Figures 7 and 8, the handle 30 includes a flexible rope body 31 and a thin sheet-like connecting ring 32 provided at both ends of the flexible rope body 31, a through groove 321 adapted to the outer diameter of the buckle portion 51 is formed on the inner side of the connecting ring 32, and the handle 30 is an integrally molded silicone rope or polyurethane rope, and the flexible rope body 31 includes an embedded reinforced nylon rope 311 and an integrally molded rubber layer 312 on the outside of the reinforced nylon rope 311, which is a silicone rope in this embodiment. Therefore, the handle 30 adopts an integrally molded silicone rope or polyurethane rope with an embedded reinforced nylon rope 311. This design not only maintains the characteristics of lightness and softness, but also greatly enhances the load-bearing capacity, while taking into account the durability and environmental friendliness of the material, which is in line with the trend of modern sustainable development.

[0051] In this embodiment, the flexible rope body 31 and the connecting ring 32 have an arc-shaped transition.

[0052] The beneficial effects of the utility model are as follows:

[0053] The connecting piece 20 of the utility model adopts a foldable sheet-like main body 21 design. By hot-melt welding the two sides of the sheet-like main body 21 to the two sides of the hot-melt sealed edge 13 on the width side of the bag body 10, the connection strength between the handle 30 and the bag body 10 can be significantly enhanced, and the force on the handle 30 can be fully dispersed. Even when loading heavy items, the handle 30 can be effectively prevented from being torn off, thereby improving the durability of the packaging bag.

[0054] In addition, the utility model moves the handle 30 to the side of the bag body 10, away from the traditional opening position, ensuring barrier-free use of the packaging bag opening, while also avoiding interference of the handle 30 structure with the sealing.

[0055] In summary, the utility model solves the deficiencies of traditional PE packaging bags in terms of load-bearing, opening convenience and sealing, fully improves the overall strength of the packaging bag, and makes it more stable and durable.

[0056] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An improved structure of a plastic bag, characterized in that: include: The bag body (10) has an opening side (11) formed at one end in the length direction and is provided with a clip chain (12) for sealing, and the remaining side edges independent of the opening side (11) are formed with hot-melt sealing edges (13); A pair of connecting sheets (20), comprising a foldable sheet body (21), the two sides of the sheet body (21) being respectively heat-melted and welded to the two sides of one of the heat-melt sealed edges (13) on the width side of the bag body (10), and the two connecting sheets (20) are respectively arranged at the two ends of the heat-melt sealed edge (13) in the length direction; The handle (30) is detachably connected between the two connecting plates (20).

2. The improved structure of a plastic bag according to claim 1, characterized in that: The sheet-like body (21) comprises a front sheet (22), a rear sheet (23) and a bending sheet (24) integrally connected between the front sheet (22) and the rear sheet (23); the front sheet (22) and the rear sheet (23) are symmetrically distributed about the bending sheet (24) and both are provided with mounting holes (25) in opposite positions.

3. The improved structure of a plastic bag according to claim 2, characterized in that: The front piece (22) and the rear piece (23) are both provided with transition chamfers (26) with the same radius at the corner positions on the sides where they are close to each other.

4. The improved structure of a plastic bag according to claim 2, characterized in that: The front sheet (22) and the rear sheet (23) are formed on one side away from each other to form a welding edge (27) opposite to the hot-melt sealing edge (13).

5. The improved structure of a plastic bag according to claim 2, characterized in that: The two ends of the handle (30) are detachably connected to two mounting holes (25) of the sheet-like body (21) in a superimposed state through a fastening piece (40).

6. The improved structure of a plastic bag according to claim 5, characterized in that: The fastening member (40) comprises a left fastening member (50) and a right fastening member (60) which are symmetrically arranged on the left and right sides. A fastening portion (51) is formed by protruding from a middle portion of one side of the left fastening member (50) close to the right fastening member (60). A fastening groove (61) which can be snap-fitted with the fastening portion (51) is formed at a corresponding position of the right fastening member (60). The outer peripheral edge of the fastening portion (51) is clearance-fitted with the mounting hole (25).

7. The improved structure of a plastic bag according to claim 6, characterized in that: The middle parts of the left buckle (50) and the right buckle (60) are both provided with hollow grooves (70) with a diameter smaller than that of the mounting hole (25) in the horizontal direction.

8. The improved structure of a plastic bag according to claim 6, characterized in that: One end of the buckling portion (51) away from the left buckle (50) is convex along its circumference to form a ring-shaped limiting portion (52), and the buckling groove (61) is provided with a matching groove (62) at a corresponding position.

9. The improved structure of a plastic bag according to claim 8, characterized in that: The handle (30) comprises a flexible rope body (31) and thin sheet-shaped connecting rings (32) arranged at both ends of the flexible rope body (31); a through groove (321) adapted to the outer diameter of the buckling portion (51) is formed on the inner side of the connecting ring (32).

10. The improved structure of a plastic bag according to claim 9, characterized in that: The handle (30) is an integrally formed silicone rope or polyurethane rope, and the flexible rope body (31) comprises an embedded reinforced nylon rope (311) and an integrally formed adhesive layer (312) on the outside of the reinforced nylon rope (311).

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