Lining bag suitable for open barrel
By designing the inner lining bag with square bottom and round mouth, using the bidirectional insertion edge and heat sealing welding technology of the cylinder membrane, the problems of low production efficiency, high cost and easy damage to the bottom of the bag are solved in the existing technology, and fully automatic production is achieved. Low cost and high quality inner lining bags.
Patent Information
- Application Number
- CN202420497916.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The inner lining bags of existing open barrels have problems such as low production efficiency, high cost, and easy damage and leakage of the bottom edge of the bag during production and use.
A square bottom and round mouth lining bag is designed. The bag body is composed of a bidirectional inserted edge of the cylindrical membrane. After being unfolded, it can be cylindrical. The bottom of the bag is heat sealed and welded to form a closed structure to avoid the heat sealing line of the bag bottom and Friction of folded edges on the round barrel bottom.
The production process is automated, the difficulty of controlling production costs and product quality is reduced, and the load bearing and wear resistance of the bag body is improved, avoiding leakage.
Smart Images
Figure CN222453066U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an inner lining bag suitable for an open barrel in the field of logistics packaging. Background Art
[0002] In the logistics storage and transportation of liquid and powdered materials, flexible liner bags are arranged in the barrel body to reduce storage and transportation costs, reduce pollution to the environment and facilitate transportation. The liner bags of the open barrels currently used are usually round bottom bags and flat bags. The production process of round bottom bags cannot be fully automatic at present, and can only be semi-mechanically produced, with low production efficiency and high production cost. Although flat bags can be fully automatically produced, the bottom sealing edge of the flat bag is easy to rub against the bottom fold of the open barrel, and the edge of the bag bottom is easily damaged during transportation, resulting in leakage, which affects the filling effect. Utility Model Content
[0003] The utility model aims to solve the shortcomings of the prior art and proposes a technical solution for liner bags suitable for open barrels.
[0004] In order to achieve the above objectives, this application provides the following technical solutions:
[0005] A liner bag suitable for an open barrel, characterized in that: the liner bag is composed of a bag body and a bag bottom, the liner bag is a square bottom and round mouth structure, and the upper end of the bag body is opened in a round shape; the bag bottom structure is a small square and is in a closed state; the bag body is composed of bidirectional inner insert edges of a tubular film, and can be cylindrical after unfolding; the bag bottom is formed by heat-sealing the bottom end of the inner insert edge tubular film to form a closed structure, and the bag bottom can be rounded after filling the product. The square bottom and round bag body structure has the advantages of simple molding and processing, low processing cost, and can be fully automatically produced, and the product quality is easier to Control; Further explanation of the above technical scheme: the diagonal length of the small square at the bottom of the bag is smaller than the inner diameter of the bottom of the open barrel, thereby avoiding the friction between the heat-sealed line at the bottom of the bag and the folded edge of the circular barrel bottom, and the load-bearing and wear-resistant properties of the bag body will be better; Further explanation of the above technical scheme: the upper opening of the bag body can be unfolded and turned outward at the barrel mouth of the open barrel, and a top cover can be added to seal and fix it at the barrel mouth of the open barrel; Further explanation of the above technical scheme: the upper opening of the bag body can be closed by tying the bag, which is convenient for sealing.
[0006] The utility model has the characteristics of convenient processing and forming, good load-bearing property of the bag body, high wear resistance and the like. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 This is a schematic diagram of the structure of the liner bag in a square-bottomed, round-mouthed barrel.
[0008] Figure 2 This is a diagram of the liner bag of a square-bottomed, round-mouthed barrel being stretched open.
[0009] Figure 3 It is a top view of the liner bag in a square bottom round mouth open barrel.
[0010] Figure 4 This is the application diagram of the liner bag for square bottom round mouth open barrel.
[0011] In the figure: bag body 1, bottom surface 2, heat-sealed line 3 of bag bottom, inner folding line 4, circular bag opening 5, flapped rear bag opening 6, and open barrel 7. Implementation
[0012] In order to enable those skilled in the art to better understand the technical solution of the present application, the contents of the present invention are further described below in conjunction with the accompanying drawings:
[0013] As shown in the figure, it is a liner bag for an open barrel with a square bottom and a round mouth, comprising a bag body 1, a bottom surface 2, a heat-sealing line 3 on the bag bottom, an inner folding line 4, a circular bag mouth 5, a flapped rear bag mouth 6, and an open barrel 7. The liner bag is used in the open barrel body. The bag body is composed of a bidirectional inner inserting edge of a tubular film. After unfolding, it can be cylindrical. The bag body is open at the upper end. The bag mouth can be turned outward and fixed at the barrel mouth of the open barrel to form an injection port of the barrel body. The bag bottom is a closed structure formed by heat-sealing the bottom end of the inner inserting edge tubular film. After filling the product, the bag bottom can be rounded. The bottom surface of the bag body is a small square structure. The diagonal of the small square is smaller than the inner diameter of the barrel bottom, thereby avoiding the friction between the heat-sealing line of the bag bottom and the folded edge of the circular barrel bottom, and the wear resistance will be better.
[0014] The above are only preferred embodiments of the present application, and the protection scope of the present application shall be subject to the scope defined by the claims. For those skilled in the art, several improvements and modifications may be made without departing from the spirit and scope of the present application, and such improvements and modifications shall also be deemed as the protection scope of the present application.
Claims
1. A liner bag suitable for an open barrel, characterized in that : The liner bag is composed of a bag body and a bag bottom. The liner bag has a square bottom and a round mouth structure, and the upper end of the bag body opens into a circle; the bag bottom structure is a small square and is in a closed state; the bag body is composed of bidirectional inner insert edges of a tubular film, and can be cylindrical after unfolding; the bag bottom is a closed structure formed by heat-sealing the bottom end of the inner insert edge tubular film, and the bag bottom can be round after filling the product; the diagonal length of the small square of the bag bottom is smaller than the inner diameter of the bottom of the open barrel; the upper mouth of the bag body can be closed by tying the bag.
2. The liner bag suitable for an open barrel according to claim 1, characterized in that: The upper opening of the bag body can be unfolded and turned outward to the barrel opening of the open barrel, and a top cover is added to close and fix the barrel opening of the open barrel.