Sterile liquid culture medium packaging bag

Abstract

The utility model discloses a sterile liquid culture medium packaging bag which comprises a bag body and a filter screen arranged in the bag body, the bag body comprises two correspondingly arranged composite films and a bottom film, the two sides of the bottom film are respectively connected with the composite films in a heat sealing mode, and sealing strips capable of sealing a cavity are correspondingly arranged at the tops of the inner sides of the two composite films. An opening is formed between the top of the filter screen and the sealing strip, an easy-to-tear linear structure is arranged above the sealing strip, during operation, a sample is added on one side of the filter screen in a sterile operation manner, the other side of the filter screen can easily suck sample uniform liquid after homogenization, and the top of the filter screen is arranged below the sealing strip; in this way, sealing of the liquid culture medium packaging bag can be achieved through a common sealing machine, a linear structure easy to tear is arranged above the sealing strip, a client can tear the bag opening with hands to conduct sample adding operation, operation and use are convenient, and the liquid culture medium packaging bag belongs to the field of experimental instruments for medicine, chemistry and chemical engineering.

Description

Technical Field

[0001] The utility model belongs to the field of experimental instruments for medicine, chemistry and chemical industry, and more specifically relates to a sterile liquid culture medium packaging bag. Background Art

[0002] After entering the 21st century, the types of food, beverages, health products and medicines on the market have become increasingly rich. People are paying more and more attention to the safety of food and medicine, and the state's supervision and control of food and drug safety has become more and more strict. The work of grassroots production units and regulatory departments has become increasingly heavy. In order to improve production efficiency, they have all used ready-to-use culture media.

[0003] After homogenization and dilution of food, beverages, health products, and medicines, some large particles will be suspended in the sample diluent, which will clog the pipette when aspirated with a pipette, greatly affecting efficiency. At present, the market can only provide sterile homogenization bags with a full-surface filter screen with filtering function. After the liquid culture medium is filled into the bag, professional heat sealing equipment is required to heat seal the bag mouth (with filter screen), and customers cannot tear the bag (with filter screen) by hand. They need to bring their own sterile scissors to open the bag mouth and add samples; or provide sterile homogenization bags or ready-to-use culture media without filter screens, which cannot filter large particles in the homogenized sample, resulting in blockage or pouring into the plate during aspiration. Large particle impurities affect the observation of results. Therefore, a technical solution that can solve the above problems is urgently needed. Utility Model Content

[0004] The main purpose of the utility model is to provide a sterile liquid culture medium packaging bag, which can provide filtering effect and is convenient to use.

[0005] In order to achieve the above object, the technical solution of the utility model is:

[0006] A sterile liquid culture medium packaging bag, comprising a bag body and a filter net arranged in the bag body and allowing the liquid culture medium to flow freely, the bag body comprising two correspondingly arranged composite films and bottom films respectively connected to the composite films by heat sealing on both sides, the two composite films are connected to the bottom film to form a chamber that can accommodate the liquid culture medium, the inner tops of the two composite films are correspondingly provided with a sealing strip that can close the chamber, the filter net is located between the two composite films, the filter net separates the chamber, an opening is arranged between the top of the filter net and the sealing strip, an easy-tear straight line structure is arranged above the sealing strip, the easy-tear straight line structure comprises easy-tear openings respectively arranged at both ends of the bag body and thickened adhesive strips and / or notches connected to the easy-tear openings for easy tearing into a straight line. The thickened adhesive strips and / or notches are connected to the easy-tear openings, which means that the easy-tear openings are directly connected to the thickened adhesive strips and / or notches; or after the easy-tear openings are torn, the tear line is connected to the thickened adhesive strips and / or notches. The thickened rubber strip and / or the notch may be in the same straight line as the easy-tear edge, or the thickened rubber strip and / or the notch may be above or slightly below the easy-tear edge.

[0007] In a specific embodiment of the utility model, a folding area is provided in the middle of the bottom film, and the opening and closing angles of the bottoms of the two composite films can be adjusted through the folding area so that the bag body can complete the standing operation.

[0008] In a specific embodiment of the present invention, the length of the composite film is between 270-320 mm, and the width of the composite film is between 170-200 mm.

[0009] In a specific embodiment of the present invention, the composite film is a transparent material component.

[0010] In a specific embodiment of the present invention, the length of the base film is between 170-200 mm, and the width of the base film is between 70-90 mm.

[0011] In a specific embodiment of the present invention, a plurality of mesh holes are evenly spaced on the filter screen.

[0012] In a specific embodiment of the present invention, the diameters of the plurality of mesh holes are all between 0.1 and 0.5 mm.

[0013] In a specific embodiment of the present invention, the filter screen is a meltblown cloth, a non-woven fabric or a membrane material component.

[0014] In a specific embodiment of the present invention, the interval between the easy-tear opening and the sealing strip is between 1-3 mm.

[0015] In a specific embodiment of the present invention, the easy-tear notch is a triangular notch, an arc-shaped notch, etc.

[0016] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0017] The utility model sets a filter screen in the bag body to allow the liquid culture medium to flow freely. During operation, the sample is added to one side of the filter screen aseptically. After homogenization, the sample can be easily absorbed on the other side of the filter screen. The top of the filter screen is below the sealing strip. In this way, the liquid culture medium packaging bag can be sealed using an ordinary sealing machine. An easy-to-tear straight line structure is set above the sealing strip. Customers can tear open the bag mouth by hand to add samples, which is convenient for operation and use. Automated production can be easily realized from bag making, packaging, sealing, and packaging. To end customers, it can also be compatible with automated sample adding equipment for automatic homogenization and sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0019] Figure 1 It is a front view of an embodiment of the utility model;

[0020] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0021] Figure 3 It is a side view of an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0027] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0028] Refer to the attached Figure 1 To Attachment Figure 3 As shown, a sterile liquid culture medium packaging bag includes a bag body 1 and a filter screen 2 arranged in the bag body 1 for allowing the liquid culture medium to flow freely. The bag body 1 includes two correspondingly arranged colorless and transparent composite films 11 and bottom films 12 on both sides of which are heat-sealed and connected to the composite films 11 respectively. The two composite films 11 and the bottom film 12 are connected to form a chamber for accommodating the liquid culture medium. The filter screen 2 is located between the two composite films 11, so that the sample can be added to one side of the filter screen 2, and the other side is used for absorbing the sample liquid without clogging the pipette.

[0029] In one embodiment of the utility model, the inner sides of the tops of the two composite films 11 are respectively provided with sealing strips 4 that can close the chamber. The sealing strips 4 are arranged on the inner sides of the composite films 11 on both sides so that they can be buckled together to form a sealing structure to prevent the liquid from flowing to the top position of the bag body 1. After the liquid culture medium is filled in the chamber, an independently closed sterile bag body can be formed to ensure that the product is sterile and does not leak.

[0030] In one embodiment of the utility model, an opening 3 is provided between the filter screen 2 and the sealing strip 4, so that the lower part of the chamber is filled with liquid culture medium, and the chamber is divided by the filter screen 2 into two left and right chambers connected at the top, and the filter screen 2 is sandwiched between two composite films 11 and heat-sealed together, and the bottom of the filter screen 2 is heat-sealed between the composite film 11 and the bottom film 12.

[0031] In one embodiment of the utility model, a plurality of mesh holes 21 are evenly spaced on the filter screen 2, and the diameters of the plurality of mesh holes 21 are all between 0.1-0.5 mm, preferably 0.3 mm. The filter screen 2 can be a meltblown cloth, a non-woven fabric with holes, or a membrane material with artificial holes, so as to ensure the free flow of liquid culture medium, and block large-particle food samples or other sample particles on one side of the filter screen 2. During homogenization, the upper layer of the filter screen 2 is just stuck on the upper end of the homogenizer, so as to ensure that the sample particles will not enter the other side from the filter screen 2 during the homogenization process.

[0032] In one embodiment of the utility model, a folding area is provided in the middle of the bottom film 12, so that after the liquid culture medium is filled, the opening and closing angles of the bottoms of the two composite films 11 can be adjusted through the folding area to enable the bag body 1 to complete the standing operation.

[0033] In one embodiment of the utility model, the length of the composite film 11 is between 270-320 mm, preferably 290 mm, and the width of the composite film 11 is between 170-200 mm, preferably 185 mm. The length of the base film 12 is between 170-200 mm, preferably 185 mm, and the width of the base film 12 is between 70-90 mm, preferably 80 mm, so that the appropriate size can be used to facilitate batch automated bag making, culture medium liquid packaging and packaging, and it has the advantages of easy storage and transportation and simple operation for end customers, which is very convenient for promotion and application to the grassroots.

[0034] In one embodiment of the utility model, an easy-tear straight line structure 5 is provided above the sealing strip 4, and easy-tear openings 7 are respectively provided at both ends of the bag body 1. The easy-tear straight line structure 5 can be laser breakpoint cutting, so that only the upper film of the composite film 11 is pierced while the lower film remains intact; or a thickened rubber strip 6 with a width of 6 mm is added to achieve the thickness difference of the upper and lower composite films 11 at the easy-tear opening 7, so as to achieve the purpose of tearing into a straight line. After tearing the easy-tear opening 7 on one side, it can be torn along a straight line to the easy-tear opening 7 on the other side under the guidance of the thickened rubber strip 6, which is convenient for operation and use.

[0035] In one embodiment of the utility model, the thickened rubber strip 6 is located above the easy tearing opening 7, and the easy tearing opening 7 is set as a triangular notch, and the easy tearing opening 7 is set to be spaced between 1-3 mm and the sealing strip 4, preferably 2 mm. After tearing from the easy tearing opening 7, the thickened rubber strip 6 needs to be torn with greater force, so under the restriction of the thickened rubber strip 6, the composite film is torn along the bottom of the thickened rubber strip 6 to form a straight opening.

[0036] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A sterile liquid culture medium packaging bag, characterized in that: The invention comprises a bag body (1) and a filter screen (2) arranged in the bag body (1) and allowing a liquid culture medium to flow freely. The bag body (1) comprises two correspondingly arranged composite films (11) and a bottom film (12) respectively connected to the composite films (11) by heat sealing on both sides. The two composite films (11) and the bottom film (12) are connected to form a chamber that can accommodate the liquid culture medium. The inner tops of the two composite films (11) are correspondingly provided with a sealing strip (4) that can close the chamber. The filter screen (2) is located between the two composite films (11). The filter screen (2) separates the chamber. An opening (3) is provided between the top of the filter screen (2) and the sealing strip (4). An easy-tear straight line structure (5) is provided above the sealing strip (4). The easy-tear straight line structure (5) comprises easy-tear openings (7) respectively arranged at both ends of the bag body (1) and thickened rubber strips and / or notches (6) that are connected to the easy-tear openings (7) and are convenient for tearing into a straight line.

2. The sterile liquid culture medium packaging bag according to claim 1, characterized in that: A folding area is provided in the middle of the bottom film (12), and the opening and closing angles of the bottoms of the two composite films (11) can be adjusted through the folding area so that the bag body (1) can complete the standing operation.

3. The sterile liquid culture medium packaging bag according to claim 2, characterized in that: The length of the composite film (11) is between 270 and 320 mm, and the width of the composite film (11) is between 170 and 200 mm.

4. The sterile liquid culture medium packaging bag according to claim 3, characterized in that: The composite film (11) is a transparent material component.

5. The sterile liquid culture medium packaging bag according to claim 2, characterized in that: The length of the bottom film (12) is between 170 and 200 mm, and the width of the bottom film (12) is between 70 and 90 mm.

6. The sterile liquid culture medium packaging bag according to claim 1, characterized in that: The filter screen (2) is provided with a plurality of mesh holes (21) at even intervals.

7. The sterile liquid culture medium packaging bag according to claim 6, characterized in that: The diameters of the plurality of mesh holes (21) are all between 0.1 and 0.5 mm.

8. The sterile liquid culture medium packaging bag according to claim 6 or 7, characterized in that: The filter screen (2) is a meltblown fabric, a non-woven fabric or a membrane material component.

9. The sterile liquid culture medium packaging bag according to claim 1, characterized in that: The distance between the easy-tear opening (7) and the sealing strip (4) is between 1 and 3 mm.

10. The sterile liquid culture medium packaging bag according to claim 1, characterized in that: The easy-tear opening (7) is a triangular notch or an arc-shaped notch.

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