Full-biodegradable packaging bag

By introducing reinforcement mechanisms and specific fiber materials into fully biodegradable packaging bags, the problems of complex structure and increased weight of existing packaging bags are solved, achieving the effect of being less prone to breakage and lightweight when lifting heavier items.

CN224061561UActive Publication Date: 2026-03-31SHENZHEN GUANLIAN PACKAGING PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Existing high-tensile strength fully biodegradable packaging bags have complex structures and increase the weight of the packaging bags, which cannot meet the requirements of lightness and are prone to breakage when lifting heavy items.

Method used

The packaging bag is reinforced with vertical connecting strips, bottom reinforcing folds, and top buckle reinforcing strips, combined with polyhydroxyalkanoate fibers to increase its strength. Polylactic acid fibers are used to improve its density. The bag is lifted by a handle to avoid direct connection, and polyhydroxyalkanoate fibers are used to ensure biocompatibility and biodegradability.

Benefits of technology

It improves the strength and water resistance of packaging bags, reduces weight gain, is suitable for various industries, degrades in natural environments, and meets the requirements of lightweight and tensile strength.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of biodegradable packaging bags, and discloses a full-biodegradable packaging bag. The degradable packaging bag comprises a degradable packaging bag body, the outer end of the degradable packaging bag body is provided with a reinforcing mechanism, the reinforcing mechanism comprises a connecting vertical strip, the bottom end of the opposite inner side of the connecting vertical strip is fixedly connected with a bottom reinforcing folding strip, and the upper side of the outer end of the connecting vertical strip is fixedly connected with an upper buckle reinforcing strip; the connecting vertical strips and the bottom reinforcing folding strips can reinforce and support the outer end and the bottom end of the degradable packaging bag body, meanwhile, the connecting vertical strips, the bottom reinforcing folding strips and the upper buckle reinforcing strips are formed by compressing polyhydroxyalkanoate fibers, and the weight of the packaging bag body cannot be excessively increased while the firmness is improved; through cooperation of the structures, the firmness of the packaging bag is improved, meanwhile, the weight of the packaging bag body is not excessively increased, and practicability is improved.
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Description

Technical Field

[0001] This application belongs to the field of biodegradable packaging bag technology, specifically a fully biodegradable packaging bag. Background Technology

[0002] With economic development and the progress of the logistics industry, packaging bags have been widely used in industrial production. When used for packaging and receiving items, packaging bags can play a good protective role for the items placed inside, making it difficult for items to be moved out. Biodegradable materials can be decomposed in nature by the action of microorganisms, so using them as packaging materials can reduce the amount of waste.

[0003] A search of patent document CN 215286111 U reveals a fully biodegradable packaging bag with high tensile strength. The bag includes a biodegradable packaging bag body, with tensile strength devices on the surface of the body. These devices include a first clamping plate, a second clamping plate, and a third clamping plate. Tensile mechanisms are symmetrically fixed between the bottom of the first clamping plate and the top of the second clamping plate, and between the bottom of the second clamping plate and the top of the third clamping plate. A first connecting rope is symmetrically fixed to the bottom of each of the third clamping plates, and a second connecting rope is symmetrically fixed to the opposite side of each first connecting rope. This invention provides a fully biodegradable packaging bag with high tensile strength, which solves the problem that biodegradable packaging bags often break when lifted after being loaded with heavy items, failing to increase their tensile strength and preventing breakage when lifting heavy objects.

[0004] However, in actual use, it was found that the structure is very complex and greatly increases the overall weight of the biodegradable packaging bag, which cannot meet the requirement of lightweight packaging bags; therefore, a fully biodegradable packaging bag is provided. Utility Model Content

[0005] The purpose of this application is to provide a fully biodegradable packaging bag in order to solve the problems mentioned above.

[0006] The technical solution adopted in this application is as follows: a fully biodegradable packaging bag, including a biodegradable packaging bag body, a reinforcing mechanism provided at the outer end of the biodegradable packaging bag body, the reinforcing mechanism including a connecting vertical strip, a bottom reinforcing fold strip fixedly connected to the bottom of the relatively inner side of the connecting vertical strip, and an upper buckle reinforcing strip fixedly connected to the upper side of the outer end of the connecting vertical strip.

[0007] By adopting the above technical solution, the connecting vertical strip and the bottom reinforcing fold strip can reinforce and support the outer and bottom ends of the biodegradable packaging bag body. At the same time, the connecting vertical strip, the bottom reinforcing fold strip and the top buckle reinforcing strip are made of compressed polyhydroxyalkanoate fibers, which increases the strength without excessively increasing the weight of the packaging bag body.

[0008] In a preferred embodiment, the degradable packaging bag body includes a degradable compression plate, with a diagonal reinforcing strip fixedly connected to the outer diagonal end of the degradable compression plate, and multiple sets of reinforcing crossbars fixedly connected to the outer end of the degradable compression plate.

[0009] By adopting the above technical solution, the diagonal reinforcement strip can increase the strength of the degradation compression plate by fixing the diagonal corners and reinforcing the horizontal bars.

[0010] In a preferred embodiment, an outer waterproof bag is fixedly connected to the front end of the degradable compression plate, and an inner waterproof bag is fixedly connected to the rear end of the degradable compression plate.

[0011] By adopting the above technical solution, the outer waterproof bag and the inner waterproof bag are made of polylactic acid fiber, which improves its density through heat treatment and reduces water penetration, thereby increasing the durability of the biodegradable packaging bag body.

[0012] In a preferred embodiment, the front and rear outer ends of the upper buckle reinforcing strip are fixedly connected to a handle connecting strip, and a handle rope is slidably passed through the upper inner side of the handle connecting strip. An anti-detachment block is fixedly connected to the outer end of the handle connecting strip through the handle rope.

[0013] By adopting the above technical solution, the carrying rope connected to the handle can lift the biodegradable packaging bag body without directly connecting to it, thus preventing the biodegradable packaging bag body from breaking.

[0014] In a preferred embodiment, the degradable packaging bag body has pre-creases on both sides and the bottom, and the handle is made of polyhydroxyalkanoate fiber.

[0015] By adopting the above technical solution, polyhydroxyalkanoate fiber is a type of biopolymer produced by microbial fermentation. It has good biocompatibility and biodegradability, is suitable for a variety of industries, and can also degrade in the natural environment.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0017] In this application, when items are placed inside the biodegradable packaging bag, the inner waterproof bag increases the internal waterproofness, reducing the risk of breakage due to water seepage. Simultaneously, the outer waterproof bag reduces damage to the biodegradable packaging bag from external water. Furthermore, after items are placed inside, the connecting vertical strips and bottom reinforcing folds reinforce the outer and bottom ends of the biodegradable packaging bag. The bag is then individually lifted via a handle connected to the upper reinforcing strip and a carrying rope. The polyhydroxyalkanoate fiber used is a biopolymer produced by microbial fermentation, exhibiting excellent biocompatibility and biodegradability, suitable for various industries, and capable of degradation in natural environments. This combination of structures increases the bag's strength without excessively increasing its weight, thus improving its practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this application;

[0019] Figure 2 This is a schematic diagram of the reinforcement mechanism in this application;

[0020] Figure 3 This is a schematic diagram of the structure of the biodegradable bag in this application.

[0021] The markings in the diagram are as follows: 1. Biodegradable packaging bag body; 101. Biodegradable compression plate; 102. Outer waterproof bag; 103. Inner waterproof bag; 104. Diagonal reinforcing strip; 105. Reinforcing horizontal strip; 2. Reinforcing mechanism; 201. Connecting vertical strip; 202. Bottom reinforcing fold strip; 203. Top buckle reinforcing strip; 204. Handle connecting strip; 205. Handle rope; 206. Anti-detachment block; 3. Pre-fold crease. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Example:

[0024] Reference Figure 1-3A fully biodegradable packaging bag includes a biodegradable packaging bag body 1. A reinforcing mechanism 2 is provided at the outer end of the biodegradable packaging bag body 1. The reinforcing mechanism 2 includes a connecting vertical strip 201. A bottom reinforcing fold strip 202 is fixedly connected to the relatively inner bottom end of the connecting vertical strip 201. An upper buckle reinforcing strip 203 is fixedly connected to the upper side of the outer end of the connecting vertical strip 201. The connecting vertical strip 201 and the bottom reinforcing fold strip 202 can reinforce and support the outer end and bottom end of the biodegradable packaging bag body 1. At the same time, the connecting vertical strip 201, the bottom reinforcing fold strip 202 and the upper buckle reinforcing strip 203 are made of compressed polyhydroxyalkanoate fibers, which increases the strength without excessively increasing the weight of the packaging bag body.

[0025] Reference Figure 1-3 The biodegradable packaging bag body 1 includes a biodegradable compression plate 101. A diagonal reinforcing strip 104 is fixedly connected to the outer diagonal end of the biodegradable compression plate 101. Multiple sets of reinforcing horizontal bars 105 are fixedly connected to the outer end of the biodegradable compression plate 101. The diagonal reinforcing strip 104 can increase the strength of the biodegradable compression plate 101 by fixing the diagonal corner of the biodegradable compression plate 101 and reinforcing the horizontal bars 105.

[0026] Reference Figure 1-3 The front end of the degradable compression plate 101 is fixedly connected to an outer waterproof bag 102, and the rear end of the degradable compression plate 101 is fixedly connected to an inner waterproof bag 103. The outer waterproof bag 102 and the inner waterproof bag 103 are made of polylactic acid fiber, which improves its density and reduces water penetration through heat treatment such as hot pressing and hot stretching, thereby increasing the durability of the degradable packaging bag body 1.

[0027] Reference Figure 1-3 The front and rear outer ends of the upper buckle reinforcing strip 203 are fixedly connected to the handle connecting strip 204. The upper inner side of the handle connecting strip 204 is slidably connected to the handle rope 205. The outer end of the handle rope 205 is fixedly connected to the anti-detachment block 206. The handle rope 205 connected to the handle connecting strip 204 can lift the biodegradable packaging bag body 1 without directly connecting to the biodegradable packaging bag body 1, which can prevent the biodegradable packaging bag body 1 from breaking.

[0028] Reference Figure 1-3 The degradable packaging bag body 1 has pre-creases 3 on both sides and the bottom. The handle 205 is made of polyhydroxyalkanoate fiber, which is a type of biopolymer produced by microbial fermentation. It has good biocompatibility and biodegradability, and is suitable for a variety of industries. It can also degrade in natural environments such as oceans or soil.

[0029] The implementation principle of a fully biodegradable packaging bag embodiment of this application is as follows:

[0030] When items are placed inside the biodegradable packaging bag body 1, the inner waterproof bag 103 increases the internal waterproofness, reducing the risk of breakage due to water seepage. Simultaneously, the outer waterproof bag 102 reduces damage to the biodegradable packaging bag body 1 from external water. After items are placed inside, the connecting vertical strip 201 and the bottom reinforcing fold strip 202 reinforce the outer and bottom ends of the biodegradable packaging bag body 1. The bag body 1 can be individually lifted via the handle connecting strip 204 connected to the upper buckle reinforcing strip 203 and the carrying rope 205. Furthermore, the polyhydroxyalkanoate fiber used is a biopolymer produced by microbial fermentation, possessing excellent biocompatibility and biodegradability, suitable for various industries, and degradable in natural environments such as oceans or soil. Through the combination of these structures, the packaging bag's strength is increased without excessively increasing its weight, thus improving its practicality.

[0031] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such 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 this application.

Claims

1. A fully biodegradable packaging bag comprising a biodegradable packaging bag body (1), characterized by: The outer end of the degradation packaging bag body (1) is provided with a reinforcing mechanism (2), the reinforcing mechanism (2) comprises a connecting vertical bar (201), the opposite inner side bottom end of the connecting vertical bar (201) is fixedly connected with a bottom reinforcing folding bar (202), and the outer end upper side of the connecting vertical bar (201) is fixedly connected with an upper buckle reinforcing bar (203).

2. A fully biodegradable packaging bag as claimed in claim 1, wherein: The degradation packaging bag body (1) comprises a degradation compression plate (101), the diagonal outer ends of the degradation compression plate (101) are fixedly connected with inclined reinforcing bars (104), and the outer ends of the degradation compression plate (101) are fixedly connected with a plurality of reinforcing horizontal bars (105).

3. A fully biodegradable packaging bag according to claim 2, wherein: The front end of the degradation compression plate (101) is fixedly connected with an outer waterproof bag (102), and the rear end of the degradation compression plate (101) is fixedly connected with an inner waterproof bag (103).

4. A fully biodegradable packaging bag according to claim 1, wherein: The front and rear outer ends of the upper buckle reinforcing bar (203) are fixedly connected with handle connecting bars (204), the opposite inner side upper ends of the handle connecting bars (204) are slidably penetrated by hand carrying ropes (205), and the outer ends of the hand carrying ropes (205) are fixedly connected with anti-dropping blocks (206).

5. A fully biodegradable packaging bag according to claim 4, wherein: The two sides and the lower end of the degradation packaging bag body (1) are provided with pre-folding marks (3), and the material of the hand carrying rope (205) is polyhydroxyalkanoate fiber.

Citation Information

Patent Citations

  • Anti-tensile high-strength full-biodegradable packaging bag

    CN215286111U