Cloth-sandwiched packaging paper bag
By introducing a fabric-insertion structure into the paper bag and using ultrasonic welding technology to fix the paper layer and woven fabric layer, the tensile strength of the paper bag is enhanced, solving the problem of paper bag damage when transporting heavy objects, and realizing safe material transportation and improved production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-03-24
AI Technical Summary
Paper bags have poor tensile strength when transporting heavy objects, making them prone to breakage and leakage.
The bag adopts a fabric-insulated structure, with the bag body consisting of a first paper layer, a first woven fabric layer, and a second paper layer from the inside out. These layers are fixed by ultrasonic welding to enhance the bag body's tensile strength.
It improves the bag's tensile strength, prevents material leakage, reduces production costs, and increases production efficiency.
Smart Images
Figure CN224029646U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to paper bag technical field especially relates to a cloth clamping packing paper bag. BACKGROUND
[0002] In the food industry, paper bags have the characteristics of low cost and non-toxic, and are convenient for loading food raw materials. However, the tensile resistance of paper bags is poor, and when transporting materials weighing several dozen or several hundred kilograms, the paper bags are prone to damage, resulting in material leakage. SUMMARY
[0003] The utility model discloses at least one of the technical problems in the prior art is solved to some extent. To this end, the utility model provides a cloth clamping packing paper bag.
[0004] The utility model discloses a cloth clamping packing paper bag, the cloth clamping packing paper bag includes:
[0005] The bag body includes a bag body and a bottom sealing structure, the bag body is cylindrical and both ends are open, the bottom sealing structure is connected with the lower end of the bag body and blocks the lower port of the bag body, and the bag body includes a first paper layer, a first woven cloth layer and a second paper layer from inside to outside.
[0006] According to the cloth clamping packing paper bag provided by the utility model, the first woven cloth layer can enhance the tensile resistance of the bag body, so that the bag body is difficult to be damaged, and material leakage is avoided.
[0007] According to some embodiments of the utility model, the first paper layer is formed by connecting the two ends of the first paper in a head-to-tail manner, the second paper layer is formed by connecting the two ends of the second paper in a head-to-tail manner, and the first woven cloth layer is formed by connecting the two ends of the woven paper in a head-to-tail manner.
[0008] According to some embodiments of the utility model, the first paper layer and the first woven cloth layer are relatively fixed by ultrasonic welding.
[0009] According to some embodiments of the utility model, the second paper layer and the first woven cloth layer are relatively fixed by ultrasonic welding.
[0010] According to some embodiments of the utility model, the two ends of the first paper are fixedly connected by adhesion.
[0011] According to some embodiments of the utility model, the two ends of the second paper are fixedly connected by adhesion.
[0012] According to some embodiments of the utility model, the two ends of the woven paper are relatively fixed by ultrasonic welding.
[0013] According to some embodiments of the present application, the upper ends of the first paper layer and the second paper layer are at the same height, and the upper end of the first woven cloth layer is lower than the upper end of the first paper layer.
[0014] According to some embodiments of the present application, the outer circumferential wall of the upper end of the first paper layer is attached to and bonded with the inner circumferential wall of the upper end of the second paper layer.
[0015] According to some embodiments of the present application, the bottom sealing structure is in a sheet shape and is bonded with the bag body, and the bottom sealing structure comprises, from top to bottom, a third paper layer, a second woven cloth layer and a fourth paper layer, and the second woven cloth layer is fixed relative to the third paper layer and the fourth paper layer by ultrasonic welding.
[0016] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0017] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
[0018] Figure 1 is a structure schematic view of a cloth sandwich packaging paper bag according to some embodiments of the present application;
[0019] Figure 2 is a structure schematic view of a bag body according to some embodiments of the present application;
[0020] Figure 3 is a structure schematic view of a bag body according to some embodiments of the present application;
[0021] Figure 4 is a structure schematic view of a cloth sandwich packaging paper bag according to some embodiments of the present application;
[0022] Figure 5 is a structure schematic view of a bottom sealing structure according to some embodiments of the present application.
[0023] LIST OF ELEMENTS
[0024] bag body 100; bag body 110; first paper layer 111; first woven cloth layer 112; second paper layer 113; first paper sheet 114; second paper sheet 115; woven paper sheet 116; bottom sealing structure 120; third paper layer 121; second woven cloth layer 122; fourth paper layer 123. DETAILED DESCRIPTION
[0025] The embodiments of the present application are described below in detail, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0026] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.
[0027] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, etc., it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0028] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.
[0029] The embodiments of the present application are described below in detail.
[0030] According to some embodiments of the present application, with reference to Figures 1 to 5 , the cloth packaging paper bag comprises a bag body 100, the bag body 100 comprises a bag body 110 and a bottom sealing structure 120, the bottom sealing structure 120 is located below the bag body 110, the bag body 110 is in a cylindrical shape, both upper and lower ends of the bag body 110 are open, the bottom sealing structure 120 is connected with the lower end of the bag body 110 and seals the lower end of the bag body 110, and the bag body 110 comprises a first paper layer 111, a first woven cloth layer 112 and a second paper layer 113 from inside to outside. The first woven cloth layer 112 is PP cloth, which is a semi-crystalline thermoplastic polymer made of propylene monomer through polycondensation reaction, has excellent mechanical properties including tensile strength, compressive strength and hardness, outstanding rigidity and bending fatigue resistance. The first woven cloth layer 112 can enhance the tensile resistance of the bag body 110, so that the bag body 110 is difficult to be damaged, and material leakage is avoided.
[0031] According to some embodiments of the present application, with reference to Figure 2 andFigure 3 The first paper layer 111 is formed by connecting two ends of the first paper 114 end to end, the second paper layer 113 is formed by connecting two ends of the second paper 115 end to end, and the first woven cloth layer 112 is formed by connecting two ends of the woven paper 116 end to end, and the first woven cloth layer 112 is located between the first paper layer 111 and the second paper layer 113. The outer peripheral wall of the first paper layer 111 is attached to the inner peripheral wall of the first woven cloth layer 112, and the inner peripheral wall of the second paper layer 113 is attached to the outer peripheral wall of the first woven cloth layer 112. The first woven cloth layer 112 can enhance the wear resistance of the first paper layer 111 and the second paper layer 113, so that the first paper layer 111 and the second paper layer 113 are not easily damaged.
[0032] According to some embodiments of the present application, the first paper layer 111 and the first woven cloth layer 112 are relatively fixed by ultrasonic welding. Due to the characteristics of the material of the first woven cloth layer 112, the first paper layer 111 and the first woven cloth layer 112 can be quickly welded and relatively fixed by ultrasonic welding, thereby increasing production efficiency and reducing production cost.
[0033] It can be understood that the first paper layer 111 is the inner layer of the bag body 110, and the first paper layer 111 is in contact with the material. In the process of loading and unloading the material, the friction of the material on the first paper layer 111 can easily cause the first paper layer 111 to be damaged. The inner side of the first woven cloth layer 112 is tightly attached to the outer side of the first paper layer 111, thereby improving the wear resistance of the first paper layer 111, so that the first paper layer 111 is not easily damaged.
[0034] According to some embodiments of the present application, the second paper layer 113 and the first woven cloth layer 112 are relatively fixed by ultrasonic welding. Due to the characteristics of the material of the first woven cloth layer 112, the second paper layer 113 and the first woven cloth layer 112 can be quickly welded and relatively fixed by ultrasonic welding, thereby increasing production efficiency and reducing production cost.
[0035] It can be understood that the second paper layer 113 is the outer layer of the bag body 110, and the second paper layer 113 is in contact with the outside world. The outer side of the first woven cloth layer 112 is tightly attached to the inner side of the second paper layer 113, thereby improving the wear resistance of the second paper layer 113, so that the second paper layer 113 is not easily damaged.
[0036] According to some embodiments of the present application, the two ends of the first paper 114 are fixedly connected by adhesion. The two ends of the second paper 115 are fixedly connected by adhesion. It should be noted that the adhesion of the present embodiment uses food-grade glue.
[0037] According to some embodiments of the present application, the two ends of the woven paper 116 are relatively fixed by ultrasonic welding, which is fast and low in cost.
[0038] According to some embodiments of the present application, refer to Figure 4 The upper end of the first paper layer 111 and the second paper layer 113 are at the same height, and the upper end of the first woven cloth layer 112 is lower than the upper end of the first paper layer 111, so that the part of the outer peripheral wall of the upper end of the first paper layer 111 and the part of the inner peripheral wall of the upper end of the second paper layer 113 are adhered and bonded, thereby realizing sealing and avoiding foreign matters from entering between the first paper layer 111 and the second paper layer 113.
[0039] According to some embodiments of the present application, refer to Figure 5 The bottom sealing structure 120 is in a sheet shape and is bonded with the bag body 110, and the bottom sealing structure 120 sequentially includes a third paper layer 121, a second woven cloth layer 122 and a fourth paper layer 123 from top to bottom, and the second woven cloth layer 122 is relatively fixed with the third paper layer 121 and the fourth paper layer 123 by ultrasonic welding. The second woven cloth layer 122 is PP cloth, and the bottom sealing structure 120 has wear resistance to avoid damage and material leakage.
[0040] In the description of the present application, the description of the term "some embodiments" means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0041] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A fabric-lined packaging paper bag, characterized in that, include: The bag body (100) includes a bag body (110) and a bottom sealing structure (120). The bag body (110) is cylindrical and open at both the top and bottom. The bottom sealing structure (120) is connected to the lower end of the bag body (110) and seals the lower port of the bag body (110). The bag body (110) includes a first paper layer (111), a first woven fabric layer (112), and a second paper layer (113) from the inside to the outside. The first paper layer (111) and the first woven fabric layer (112) are fixed to each other by ultrasonic welding; The second paper layer (113) and the first woven fabric layer (112) are fixed relative to each other by ultrasonic welding; The upper ends of the first paper layer (111) and the second paper layer (113) are at the same height, and the upper end of the first woven fabric layer (112) is lower than the upper end of the first paper layer (111). The outer peripheral wall of the upper end of the first paper layer (111) is attached to and bonded to the inner peripheral wall of the upper end of the second paper layer (113).
2. The fabric-lined packaging paper bag according to claim 1, characterized in that, The first paper layer (111) is formed by connecting the two ends of the first paper (114) end to end, the second paper layer (113) is formed by connecting the two ends of the second paper (115) end to end, the first woven fabric layer (112) is formed by connecting the two ends of the woven paper (116) end to end, and the first woven fabric layer (112) is located between the first paper layer (111) and the second paper layer (113).
3. The fabric-lined packaging paper bag according to claim 2, characterized in that, The two ends of the first sheet (114) are fixedly connected by adhesive.
4. The fabric-lined packaging paper bag according to claim 2, characterized in that, The two ends of the second sheet (115) are fixedly connected by adhesive.
5. The fabric-lined packaging paper bag according to claim 2, characterized in that, The two ends of the woven paper (116) are fixed to each other by ultrasonic welding.
6. The fabric-lined packaging paper bag according to claim 1, characterized in that, The bottom sealing structure (120) is sheet-shaped and bonded to the bag body (110). The bottom sealing structure (120) includes a third paper layer (121), a second woven fabric layer (122) and a fourth paper layer (123) from top to bottom. The second woven fabric layer (122) is fixed to the third paper layer (121) and the fourth paper layer (123) respectively by ultrasonic welding.