Bacteria-proof outer composite bag for infusion bag

By using an antibacterial infusion bag with both the upper and lower composite films of the outer composite bag made of antibacterial materials, the problems of easy detachment and short-lasting effect of antibacterial agents in existing technologies are solved, thus achieving sterile isolation of the infusion bag and safety of the medication.

CN224546914UActive Publication Date: 2026-07-24HUNAN KELUN PHARMA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUNAN KELUN PHARMA
Filing Date
2025-07-24
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing antibacterial infusion bags, which are made by coating or adding antibacterial agents to the material surface, have problems such as easy peeling of antibacterial agents, short-lasting antibacterial effect, and potential adverse effects on the composition of the medicine.

Method used

The antibacterial infusion bag is made of antibacterial materials for both the upper and lower composite films. By wrapping the infusion bag with the composite bag in a sterile workshop, the inner cavity of the composite bag is isolated from the outside, thus avoiding bacterial contamination.

Benefits of technology

Effectively isolates the infusion bag from the external environment, prevents bacterial contamination, ensures the sterility of the infusion bag, and avoids the shedding of antibacterial agents and the influence of medication.

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Abstract

The utility model relates to the technical field of outer package composite bag, specifically relates to a kind of outer package composite bag of antibacterial infusion bag.It is one kind of outer package composite bag of antibacterial infusion bag, including upper layer composite film and lower layer composite film, cavity for placing infusion bag is arranged between upper layer composite film and lower layer composite film;Upper layer composite film and lower layer composite film are made of antibacterial material.Both upper layer composite film and lower layer composite film are made of material with antibacterial function, and by outer package composite bag outside infusion bag in the sterile workshop of production infusion bag, the cavity in composite bag and outside can be isolated, to avoid infusion bag and outside environment contact, to avoid the possibility of infusion bag being contaminated by bacteria.
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Description

Technical Field

[0001] This utility model relates to the field of outer packaging composite bag technology, specifically to an antibacterial infusion bag outer packaging composite bag. Background Technology

[0002] With continuous improvements in medical standards and medication safety, intravenous infusion products used in ICUs or operating rooms must ensure that the outer surface of the infusion bag is sterile upon opening the outer packaging. Currently used infusion bags are susceptible to bacterial contamination during prolonged use or storage, potentially leading to patient infections. Therefore, developing an infusion composite bag with antibacterial properties is of significant clinical importance.

[0003] In existing technologies, antibacterial infusion bags achieve their antibacterial effect by coating or adding antibacterial agents to the material surface. However, these methods have problems such as the antibacterial agent being easily detached, the antibacterial effect not being long-lasting, and the potential for adverse effects on the composition of the medication. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide an antibacterial infusion bag outer composite bag to solve the problems in the prior art. Antibacterial infusion bags mostly achieve antibacterial effect by coating or adding antibacterial agents on the material surface. However, these methods have problems such as the antibacterial agent being easy to fall off, the antibacterial effect not lasting, and the possibility of adverse effects on the composition of the medicine.

[0005] An antibacterial infusion bag outer composite bag includes an upper composite film and a lower composite film, with a chamber for placing the infusion bag provided between the upper and lower composite films; Both the upper and lower composite membranes are made of antibacterial materials.

[0006] Furthermore, the upper composite film is a polyester / cast polypropylene pharmaceutical composite film.

[0007] Furthermore, the thickness of the upper composite film is 0.08mm-0.15mm.

[0008] Furthermore, the lower composite film is a pharmaceutical composite film of polyamide / polypropylene / cast polypropylene.

[0009] Furthermore, the thickness of the lower composite film is 0.08mm-0.15mm.

[0010] Beneficial effects: Both the upper and lower composite membranes are made of antibacterial materials. By wrapping the infusion bag with a composite bag in the sterile workshop where the infusion bag is produced, the internal chamber of the composite bag can be isolated from the outside, thus preventing the infusion bag from coming into contact with the external environment and avoiding the possibility of bacterial contamination. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0012] Figure 1 This is a schematic diagram of the infusion bag structure in an embodiment of the present invention; Figure 2 This is a schematic diagram of the installation of the outer composite bag in an embodiment of this utility model.

[0013] In the picture: 1. Infusion bag; 2. Outer composite bag. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0015] It should be noted that the embodiments and features involved in the embodiments of this utility model can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0016] like Figure 1 and Figure 2 The antibacterial infusion bag outer composite bag shown includes an upper composite film and a lower composite film, with a chamber for placing the infusion bag 1 provided between the upper composite film and the lower composite film; Both the upper and lower composite membranes are made of antibacterial materials; The upper composite film is a polyester / cast polypropylene pharmaceutical composite film, and the lower composite film is a polyamide / polypropylene / cast polypropylene pharmaceutical composite film.

[0017] In this embodiment, both the upper and lower composite films are made of antibacterial materials. By wrapping the infusion bag 1 with a composite bag 2 in the sterile workshop where the infusion bag 1 is produced, the chamber inside the composite bag can be isolated from the outside, thereby preventing the infusion bag 1 from coming into contact with the external environment and thus avoiding the possibility of the infusion bag 1 being contaminated by bacteria.

[0018] The thickness of the upper composite film is 0.08mm-0.15mm, preferably 0.1mm.

[0019] The thickness of the lower composite membrane is 0.08mm-0.15mm, preferably 0.12mm. (The membrane thickness can be adjusted according to actual needs.) In this embodiment, the lower composite film is thicker and is used as a support material during the production process, for placing the infusion bag 1 after it is extruded and formed in the mold.

[0020] A method for preparing the outer composite bag for producing the above-mentioned antibacterial infusion bag includes the following steps: The first step involves softening the polyamide / polypropylene / cast polypropylene material by heating, and then preparing the lower composite membrane by applying pressure; the lower composite membrane has a chamber for placing the infusion bag; The second step involves softening the polyester / cast polypropylene material by heating and then preparing the upper composite film by applying pressure. The third step involves using a robot to place the infusion bag on the upper surface of the lower composite membrane chamber. Fourth step: Place the upper composite membrane on top of the lower composite membrane and cover the upper surface of the infusion bag 1; The fifth step involves connecting the upper and lower composite membranes together by heating and pressurizing, thus sealing the infusion bag 1 within the cavity between the upper and lower composite membranes.

[0021] In this embodiment, the outer composite bag 2 has a simple structure and is easy to produce and manufacture. Both the upper and lower composite films are made of antibacterial materials. By wrapping the outer composite bag 2 around the outside of the infusion bag 1 in the sterile workshop where the infusion bag 1 is produced, the chamber inside the composite bag can be isolated from the outside, thereby preventing the infusion bag 1 from coming into contact with the external environment and thus avoiding the possibility of the infusion bag 1 being contaminated by bacteria.

[0022] Detailed description of the appearance of infusion bag 1: mainly including its material, structure, color and markings.

[0023] Materials and Structure: Infusion bags are typically made of non-PVC composite film material, which consists of multiple co-extruded films and has good barrier properties and chemical stability. The soft bags are manufactured by heat-sealing, with the bag body and the drug delivery port joined together by heat-sealing.

[0024] The three-layer membrane material of the infusion bag mainly consists of polyethylene (PE), polypropylene (PP), and polyamide (PA). Inner layer: Usually made of polyethylene (PE), a high-density plastic material with good corrosion resistance, high temperature resistance and compression resistance, making it suitable as an inner layer that comes into direct contact with pharmaceuticals.

[0025] Middle layer: Commonly used materials include polypropylene (PP) or polyamide (PA). These materials have good stability and mechanical properties, and can effectively prevent the drug from contacting air and maintain the purity of the drug.

[0026] Outer layer: Polypropylene (PP) or polyamide (PA) are also commonly used to improve the mechanical strength of the soft bag and protect the medicine from external pressure and contamination.

[0027] Colors and logos: The color of the infusion bag 1 is generally transparent or light blue, which helps in observing the clarity and residual amount of the medication. The soft bag usually has information such as the production date, expiration date, batch number, and manufacturer. These markings are typically in the form of inkjet printing or labels, located in a prominent position on the soft bag for easy identification and use by medical staff.

[0028] Size and shape: The size and shape of infusion bags vary depending on their capacity. Common capacities include 50ml, 100ml, 250ml, and 500ml. Soft bags are generally flat rectangular or cylindrical, making them easy to hang and transport.

[0029] Production process and quality standards: The manufacturing process of infusion bag 1 includes steps such as film rolling, printing, peripheral heat sealing, filling, and sealing. Strict control of heat sealing parameters is required during production to ensure weld strength and sealing performance.

[0030] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.

Claims

1. A composite outer bag for antibacterial infusion bags, characterized in that, It includes an upper composite membrane and a lower composite membrane, with a chamber for placing the infusion bag provided between the upper and lower composite membranes; Both the upper and lower composite membranes are made of antibacterial materials.

2. The antibacterial infusion bag outer composite bag according to claim 1, characterized in that, The upper composite film is a polyester / cast polypropylene pharmaceutical composite film.

3. The antibacterial infusion bag outer composite bag according to claim 2, characterized in that, The thickness of the upper composite film is 0.08mm-0.15mm.

4. The antibacterial infusion bag outer composite bag according to any one of claims 1-3, characterized in that, The lower composite film is a pharmaceutical composite film of polyamide / polypropylene / cast polypropylene.

5. The antibacterial infusion bag outer composite bag according to claim 4, characterized in that, The thickness of the lower composite film is 0.08mm-0.15mm.