Standing pouch for filling from bottom

Abstract

The utility model relates to the field of packaging, in particular to a self-standing bag for filling from the bottom, which comprises a first side surface, a second side surface and a bag body bottom surface which form a bag body, the bag body bottom surface connected with the first side surface is a first bottom surface, and the bag body bottom surface connected with the second side surface is marked as a second bottom surface; the filling opening is formed between the first side surface and the first bottom surface; the first bottom surface and the second bottom surface are connected through a bonding layer; the area of the bonding layer is smaller than that of the bottom face of the bag body. According to the self-supporting bag, the filling opening is formed in the bottom of the bag body, the defects that the bottom face and the side face of the bag body interfere with each other and a zipper is difficult to open during bag making are overcome, meanwhile, the step of opening the zipper or a self-sealing piece during bag making and re-closing after content filling can be omitted through the opening in the bottom, filling is more convenient, and the filling efficiency is improved. And damage to the contents during filling is avoided, and the filling efficiency can be improved. And meanwhile, when normal placement is recovered, the weight of the contents after filling can overcome the heat sealing strength, so that the bottom surface is unfolded again to realize self-standing.

Description

Technical Field

[0001] This utility model relates to the field of packaging, specifically to a stand-up pouch for bottom filling. Background Technology

[0002] Currently, gel beads are often used to encapsulate concentrated detergents and concentrated fragrances to reduce the cost of packaging and transportation for these materials.

[0003] For example, CN113387064A discloses a laundry detergent pod packaging structure, including an outer sphere made of an elastic material, an inner sphere inside the outer sphere, and a cavity for containing a solution within the inner sphere. A sealing cavity filled with a pseudoplastic fluid is provided between the outer and inner spheres. This laundry detergent pod packaging structure, by using ordinary elastic materials for both the outer and inner spheres, can be stored in everyday environments, reducing the use of external sealed plastic bags and desiccants, thus reducing resource waste. Furthermore, it has strong pressure resistance, making storage and transportation simpler.

[0004] For example, CN116948763A discloses a slow-release microcapsule fragrance beads and an easy-to-rinse laundry detergent pod. The preparation method of the slow-release microcapsule fragrance beads is as follows: α-olefin and active allyl epoxy-terminated polyether are added to ethanol and stirred until dissolved. Then, hydrogen-containing silicone oil is added and stirred until dissolved. The mixture is heated to 70-85℃, and a Speier catalyst is added and stirred under reflux to obtain an active silicone wax solution. Chitosan fragrance microcapsules are added to the active silicone wax solution and reacted at 50-80℃. The reaction mixture is dried and granulated to obtain the slow-release microcapsule fragrance beads. The slow-release microcapsule fragrance beads obtained by this method can be encapsulated with surfactant solution components in the same water-soluble membrane to prepare easy-to-rinse laundry detergent pods, which have the advantages of strong detergency, good fragrance retention, and water-saving and easy rinsing.

[0005] For example, CN109329421A discloses a method for preparing edible gel beads and bubble tea, specifically including: taking edible gum and mixing it evenly with sucrose or caramel to form a gum sugar mixture; pouring the gum sugar mixture into a citric acid solution and heating and cooling it at a low temperature to form a liquid after cooking and conditioning; performing a filling and molding process on the liquid to form a gel bead base; adding a certain proportion of agar to tapioca flour, stirring evenly, then adding an appropriate amount of hot water and stirring evenly; adding the gel bead base during the stirring process, so that the outer layer of the gel bead base is coated with a tapioca flour layer of uniform thickness to form the gel bead body.

[0006] Currently, resealable bags are commonly used for packaging gel beads to maintain their seal during use and prevent dissolution and breakage due to environmental moisture. However, the resealable bags used for filling are prone to breakage due to friction at the bag opening, leading to product quality issues and hindering efficient and high-quality packaging. Furthermore, the need to open the zipper before filling and close it again afterward increases workload and complexity of automated equipment. Utility Model Content

[0007] In view of the problems existing in the prior art, the purpose of this utility model is to provide a stand-up pouch for bottom filling, so as to solve the defect that the granules will be damaged due to the scratching of the self-sealing part of the self-sealing bag mouth, resulting in product quality problems and hindering the efficient and high-quality packaging of granules.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] This utility model provides a stand-up pouch for bottom filling, the stand-up pouch for bottom filling comprising:

[0010] The bag consists of a first side surface, a second side surface, and a bottom surface. The bottom surface of the bag connected to the first side surface is the first bottom surface, and the bottom surface of the bag connected to the second side surface is the second bottom surface.

[0011] The filling port is located between the first side surface and the first bottom surface;

[0012] The first bottom surface and the second bottom surface are connected by an adhesive layer;

[0013] The area of ​​the adhesive layer is less than the area of ​​the bottom surface of the bag.

[0014] The stand-up pouch provided by this utility model, through a specific design, avoids the interference of the bottom and sides of the bag body and the difficulty of opening the zipper during bag making while designing the filling port at the bottom of the bag body. At the same time, the bottom opening can eliminate the step of opening the zipper or self-sealing component, making filling more convenient and avoiding damage during the filling of granules. After filling, the first side and the first bottom can be directly sealed to complete the process, improving the filling effect of granules and improving the filling efficiency of granules.

[0015] As a preferred technical solution of this utility model, the opening area of ​​the filling port is 0.4-0.8 times the bonding area between the bottom surface of the bag and the first side surface.

[0016] As a preferred technical solution of this utility model, the top of the bag body is provided with a bag opening with a self-sealing component.

[0017] As a preferred technical solution of this utility model, the self-sealing component includes a first self-sealing strip and a second self-sealing strip arranged opposite to each other.

[0018] As a preferred technical solution of this utility model, the first self-sealing strip and the second self-sealing strip are a concave-convex locking structure.

[0019] As a preferred technical solution of this utility model, the concave-convex locking structure is provided with at least one groove and a corresponding protrusion along the direction from the bag opening to the bottom of the bag.

[0020] As a preferred technical solution of this utility model, at least one set of self-sealing components is provided along the direction from the bag opening to the bottom of the bag.

[0021] As a preferred technical solution of this utility model, the self-sealing component further includes a sliding locking component.

[0022] As a preferred technical solution of this utility model, the bottom surface of the bag body includes a convex bottom facing the bag opening.

[0023] As a preferred technical solution of this utility model, the area of ​​the adhesive layer is 0.005-0.05 times the area of ​​the bottom surface of the bag.

[0024] Compared with existing technical solutions, this utility model has the following beneficial effects:

[0025] This utility model provides a stand-up pouch for bottom filling. During bag forming, only the upper or lower blade is heated. Insulation material is inserted at the opening point during forming, ensuring the bottom is only partially heat-sealed. During printing, heat-sealing adhesive (with an adhesion strength of 1-3 N / 15 mm) is applied locally to the bottom surface. During heat sealing, the first and second bottom surfaces adhere together, making the bottom filling port easier to open and facilitating filling. Since filling is from the bottom, it avoids scratches from self-sealing strips and other sealing components, improving the filling quality of the pods and promoting efficient pod filling. Furthermore, due to the use of low-strength heat-sealing adhesive, when the bag is returned to its normal position, the weight of the filled contents overcomes the heat-sealing strength, causing the first and second bottom surfaces to unfold again and regain their stand-up function. Attached Figure Description

[0026] Figure 1 This is a front view of a stand-up pouch for bottom filling provided by an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view along the AA direction of a stand-up pouch for bottom filling provided by an embodiment of the present invention.

[0028] In the diagram: 100 - top of bag, 200 - bottom of bag, 310 - first side, 320 - second side, 410 - first bottom, 420 - second bottom, 500 - filling port.

[0029] The present invention will now be described in further detail. However, the examples described below are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention shall be determined by the claims. Detailed Implementation

[0030] To better illustrate this utility model and facilitate understanding of its technical solution, typical but non-limiting embodiments of this utility model are as follows:

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] This embodiment provides a stand-up pouch for bottom filling, such as... Figure 1 and Figure 2 As shown, the stand-up pouch for bottom filling comprises:

[0035] The bag body consists of a first side surface 310, a second side surface 320, and a bottom surface. The bottom surface of the bag body connected to the first side surface 310 is referred to as the first bottom surface 410, and the bottom surface of the bag body connected to the second side surface 320 is referred to as the second bottom surface 420.

[0036] The filling port 500 is located between the first side surface 310 and the first bottom surface 410;

[0037] The first bottom surface 410 and the second bottom surface 420 are connected by an adhesive layer;

[0038] The area of ​​the adhesive layer is less than the area of ​​the bottom surface of the bag.

[0039] In this embodiment, the stand-up pouch can be made of single-layer material or multi-layer composite material, such as PET, PE, OPP, CPP, etc.

[0040] An exemplary assembly process is as follows: The first side 310 and the second side 320 are connected to the bottom surface of the bag body by heat sealing, gluing or other methods to form the bag body. The connection between the first side 310 and the second side 320 can be pre-connected as a whole, or it can be separately formed and then sealed by heat sealing, gluing or other methods. The bottom surface of the bag body corresponds to the bottom 200 of the bag body, and the upper part of the top 100 of the bag body corresponds to the top 100 of the bag body. The top 100 of the bag body is provided with a bag opening.

[0041] In this invention, hot sealing refers to bonding materials using heat and pressure.

[0042] In this invention, "adhesive bonding" refers to connecting two components using adhesives or other materials.

[0043] The opening area of ​​the filling port 500 is 0.4-0.8 times the bonding area between the bottom surface of the bag and the first side surface 310. For example, it can be designed as one of 0.4 times, 0.5 times, 0.6 times, 0.7 times or 0.8 times, but it is not limited to the listed values. Other unlisted multiples within this range can also be selected.

[0044] The top of the bag body is provided with a bag opening with a self-sealing component.

[0045] In this utility model, the self-sealing component refers to a sealing connection component that achieves sealing between two parts by means of interlocking or other methods. It can be integrally formed with the bag body or fixed to the bag body by means of bonding or other methods. The specific material can be selected as a polymer material, etc.

[0046] Furthermore, self-sealing components can also use other types of sealing structures for sealing, such as a spout at the bag opening, combined with a cap with a threaded structure, to achieve a locking seal through a threaded connection.

[0047] The self-sealing component includes a first self-sealing strip and a second self-sealing strip arranged opposite each other.

[0048] The first and second self-sealing strips are a locking structure with a concave-convex fit.

[0049] The locking structure includes at least one groove and a corresponding protrusion along the direction from the bag opening to the bottom. For example, if the first self-sealing strip has six grooves, the second self-sealing strip will have six corresponding protrusions, and so on. It is foreseeable that the more grooves and protrusions there are, the better the sealing effect.

[0050] The self-sealing element is provided in at least one set along the direction from the bag opening to the bottom of the bag.

[0051] Among them, self-sealing components can be designed in one or more sets to ensure the sealing effect according to the sealing requirements. It can be expected that the more self-sealing components there are, the better the sealing effect will be.

[0052] The self-sealing component also includes a sliding locking component.

[0053] In this utility model, the sliding locking component refers to the use of expanding and contracting grooves to achieve locking and opening / closing of the self-sealing component. When sliding from contraction to expansion, the sliding locking component compresses the self-sealing component with the help of the contracting groove to achieve locking. When sliding from expansion to contraction, the self-sealing component is opened and closed with the help of the dividing strip of the expanding groove.

[0054] The bottom surface of the bag includes a convex bottom facing the bag opening.

[0055] In this embodiment, the bottom surface of the bag is designed with a convex shape. When the bag is upright after being filled and sealed, the material accumulates on the bottom surface of the bag under the action of gravity, causing the bag to open up and thus improving the stability of the stand-up pouch.

[0056] The convex shape at the bottom of the convex shape includes V-shape, spherical shape or cylindrical shape.

[0057] The area of ​​the adhesive layer is 0.005-0.05 times the area of ​​the bottom surface of the bag. For example, it can be designed using one of the following values: 0.005 times, 0.006 times, 0.007 times, 0.008 times, 0.009 times, 0.01 times, 0.02 times, 0.03 times, 0.04 times, or 0.05 times. However, it is not limited to the listed values, and other unlisted multiples within this range can also be selected.

[0058] The adhesive material used in the adhesive layer is exemplified, such as commonly used adhesive materials in the art, such as heat sealant, water-based heat sealant, oil-based heat sealant, etc., preferably a heat sealant with an adhesive strength of 1-3N / 15mm.

[0059] In this embodiment, the stand-up pouch may also be equipped with functional components such as handles and hooks to facilitate easy handling and hanging of the stand-up pouch.

[0060] In this embodiment, if the filling port 500 is retained on the side of the stand-up pouch, due to the limitations of the stand-up pouch forming method, the method of filling from the side and then sealing the pouch will result in the bag's airtightness not meeting the requirements and thus failing to meet the usage requirements.

[0061] For example, a practical use case is as follows:

[0062] Example 1

[0063] This embodiment provides a stand-up pouch for bottom filling, the stand-up pouch for bottom filling comprising:

[0064] The bag body consists of a first side surface 310, a second side surface 320, and a bottom surface. The bottom surface of the bag body connected to the first side surface 310 is referred to as the first bottom surface 410, and the bottom surface of the bag body connected to the second side surface 320 is referred to as the second bottom surface 420.

[0065] The filling port 500 is located between the first side surface 310 and the first bottom surface 410;

[0066] The first bottom surface 410 and the second bottom surface 420 are connected by an adhesive layer;

[0067] The area of ​​the adhesive layer is less than the area of ​​the bottom surface of the bag.

[0068] The assembly process is as follows: The first side 310 and the second side 320 are connected and then heat-sealed to the bottom of the bag. The first side 310 and the second side 320 are pre-connected as a whole. The bottom of the bag corresponds to the bottom 200 of the bag, and the top 100 of the bag corresponds to the top 100 of the bag. The top 100 of the bag has a bag opening.

[0069] The opening area of ​​the filling port 500 is 0.6 times the bonding area between the bottom surface of the bag and the first side surface 310.

[0070] The top of the bag body is provided with a bag opening with a self-sealing component. The self-sealing component refers to a sealing connection between two parts achieved by means of interlocking or other methods, and is fixed to the bag body by means of adhesive or other methods.

[0071] The self-sealing component includes a first self-sealing strip and a second self-sealing strip arranged opposite each other.

[0072] The first and second self-sealing strips are a locking structure with a concave-convex fit.

[0073] The locking structure features six grooves and corresponding protrusions along the direction from the bag opening to the bottom. For example, if the first self-sealing strip has six grooves, the second self-sealing strip will have six corresponding interlocking protrusions.

[0074] The self-sealing element is arranged in a set along the direction from the bag opening to the bottom of the bag.

[0075] The bottom surface of the bag includes a convex bottom facing the bag opening.

[0076] In this embodiment, the bottom surface of the bag is designed with a convex shape. When the bag is upright after being filled and sealed, the material accumulates on the bottom surface of the bag under the action of gravity, causing the bag to open up and thus improving the stability of the stand-up pouch.

[0077] The convex shape at the bottom of the convex shape is V-shaped.

[0078] The area of ​​the adhesive layer is 0.01 times the area of ​​the bottom surface of the bag.

[0079] The adhesive used in the adhesive layer is a heat-sealing adhesive with a bonding strength of 2N / 15mm.

[0080] The stand-up pouch obtained in the example is used for filling granules. During filling, the granules are fed in through the filling port 500, and then sealed with PE film by heat fusion. The filling method using the bottom filling port 500 can eliminate the step of opening the zipper or self-sealing component, making filling more convenient and avoiding damage during filling of granules. At the same time, after filling, the first side 310 and the first bottom 410 can be directly sealed to complete the process, which improves the filling effect of granules and helps to improve the filling efficiency of granules.

[0081] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0082] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0083] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A stand-up pouch for bottom filling, characterized in that, The stand-up pouch for bottom filling includes: The bag consists of a first side surface, a second side surface, and a bottom surface. The bottom surface of the bag connected to the first side surface is the first bottom surface, and the bottom surface of the bag connected to the second side surface is the second bottom surface. The filling port is located between the first side surface and the first bottom surface; The first bottom surface and the second bottom surface are connected by an adhesive layer; The area of ​​the adhesive layer is less than the area of ​​the bottom surface of the bag.

2. The stand-up pouch for bottom filling as described in claim 1, characterized in that, The opening area of ​​the filling port is 0.4-0.8 times the bonding area between the bottom surface of the bag and the first side surface.

3. The stand-up pouch for bottom filling as described in claim 1, characterized in that, The top of the bag is provided with a self-sealing opening.

4. The stand-up pouch for bottom filling as described in claim 3, characterized in that, The self-sealing component includes a first self-sealing strip and a second self-sealing strip arranged opposite each other.

5. The stand-up pouch for bottom filling as described in claim 4, characterized in that, The first and second self-sealing strips are a locking structure with a concave-convex fit.

6. The stand-up pouch for bottom filling as described in claim 5, characterized in that, The convex-concave locking structure has at least one groove and a corresponding protrusion along the direction from the bag opening to the bottom of the bag.

7. The stand-up pouch for bottom filling as described in claim 3, characterized in that, At least one set of self-sealing components is provided along the direction from the bag opening to the bottom of the bag.

8. The stand-up pouch for bottom filling as described in claim 3, characterized in that, The self-sealing component also includes a sliding locking component.

9. The stand-up pouch for bottom filling as claimed in claim 1, characterized in that, The bottom surface of the bag includes a convex bottom facing the bag opening.

10. The stand-up pouch for bottom filling as claimed in claim 1, characterized in that, The area of ​​the adhesive layer is 0.005-0.05 times the area of ​​the bottom surface of the bag.

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