Humidity-heat sterilization biological indicator packaging bag

Abstract

The utility model relates to a moist heat sterilization biological indicator packaging bag. The moist heat sterilization biological indicator packaging bag is characterized by comprising a first packaging film, a second packaging film and an adhesive for adhering the first packaging film and the second packaging film, the adhesive is smeared on the first packaging film and is adhered to the second packaging film to form a sealed space for accommodating the biological indicator; the first packaging film and the second packaging film are glassine paper; the technical scheme has the beneficial effects that the first packaging film and the second packaging film are made of glassine paper, so that the first packaging film and the second packaging film cannot be torn off or generate scraps after being torn off after a high-temperature and high-humidity experiment; the adhesive is waterborne polyurethane adhesive, so that the adhesive does not lose efficacy in a high-temperature and high-humidity experiment, and the sealing environment of the biological indicator is kept.

Description

Technical Field

[0001] The utility model relates to the field of biological indicator sterilization verification, and more specifically, to a moist heat sterilization biological indicator packaging bag. Background Art

[0002] In the field of sterilization validation of biological indicators, existing technologies typically use packaging bags to seal biological indicators and place them in a high-temperature, high-humidity sterilization environment (such as steam sterilization) for testing. However, this packaging method has significant defects. In a high-humidity environment, traditional packaging paper materials are easily softened by moisture. When the packaging bag is opened after the experiment, it is very easy to tear and break. Debris generated by the packaging paper may fall into the biological indicator, contaminating the culture environment. At the same time, cross-contamination may occur after the breakage. Bacterial spores in the packaging contaminate the test environment, and spore strips are contaminated by the environment, resulting in false positive results, thereby affecting the accuracy of the sterilization effect verification. The high temperature environment of the sterilization process can easily cause the adhesive properties of the packaging bag to fail. The failure of the adhesive will cause the sealing of the packaging bag to be damaged (such as delamination and delamination), causing the sterilization medium (such as steam) to invade or the biological indicator to accidentally leak, which will also seriously interfere with the experimental results and make the sterilization validation conclusion unreliable.

[0003] In view of the above reasons, how to design a packaging bag that can be used normally in a high temperature and high humidity experimental environment is the problem considered in this application. Utility Model Content

[0004] In view of the shortcomings of the existing technology, a moist heat sterilization biological indicator packaging bag is provided, which can solve the disadvantage that the packaging bag is not resistant to high temperature and humidity.

[0005] To achieve the above-mentioned object, the following technical solution is provided: a moist heat sterilization biological indicator packaging bag, comprising a first packaging film, a second packaging film and an adhesive for bonding the first packaging film and the second packaging film;

[0006] The adhesive is applied on the first packaging film and adhered to the second packaging film to form a sealed space for accommodating the biological indicator;

[0007] The first packaging film and the second packaging film are both glassine paper;

[0008] The adhesive is water-based polyurethane glue.

[0009] In a further optimization of the present invention, the first packaging film is provided with a first force-bearing portion, which is located at the edge of the first packaging film and is separated from the second packaging film.

[0010] According to a further optimization of the present invention, the second packaging film is provided with a second force-bearing portion, which is located at the edge of the second packaging film and is separated from the first packaging film. The first force-bearing portion and the second force-bearing portion are arranged in the same direction, and the length of the first force-bearing portion is greater than that of the second force-bearing portion.

[0011] The first packaging film is attached to the second packaging film, and the first force-bearing portion and the second force-bearing portion cooperate with each other to be clamped and separated by a user.

[0012] According to a further optimization of the present invention, the adhesive application length in the direction of the first force-bearing portion and the second force-bearing portion is greater than the remaining application lengths.

[0013] This technical solution has the following beneficial effects:

[0014] 1. The first and second packaging films are made of glassine paper, which will not tear and produce debris when torn after the high humidity test;

[0015] 2. The adhesive uses water-based polyurethane glue. In high temperature experiments, the bonding will not fail and maintain the sealed environment of the biological indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a moist heat sterilization biological indicator packaging bag.

[0017] Figure 2 A schematic diagram of the planar structure of applying adhesive to a moist heat sterilization biological indicator packaging bag.

[0018] Figure numerals: 1, first packaging film; 11, first force-bearing portion; 2, second packaging film; 21, second force-bearing portion; 3, adhesive. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0020] Reference Figure 1-2 As shown, a moist heat sterilization biological indicator packaging bag includes a first packaging film 1, a second packaging film 2 and an adhesive 3 for bonding the first packaging film 1 and the second packaging film 2;

[0021] The adhesive 3 is applied on the first packaging film 1 and adhered to the second packaging film 2 to form a sealed space for accommodating the biological indicator;

[0022] The first packaging film 1 and the second packaging film 2 are both glassine paper; the adhesive 3 is water-based polyurethane adhesive.

[0023] In a moist heat sterilization environment (such as steam sterilization), the first packaging film 1 and the second packaging film 2 are both made of glassine paper. Glassine paper has high humidity resistance and can resist moisture penetration under high humidity conditions, thereby preventing tearing and damage when the packaging bag is opened. At the same time, glassine paper also has high temperature resistance and can remain stable in a high temperature environment without damage or carbonization.

[0024] Adhesive 3 is a water-based polyurethane adhesive. After being applied to the first packaging film 1, it is bonded to the second packaging film 2 by pressing, forming a sealed space to accommodate the biological indicator. Under high-temperature conditions, the characteristics of the water-based polyurethane adhesive make adhesive 3 stable, ensuring that the adhesive layer does not delaminate or stratify, maintaining the seal, and preventing the intrusion of sterilization media (such as steam) or leakage of the biological indicator.

[0025] Both glassine paper and water-based polyurethane adhesive are resistant to high temperature and high humidity. The two work together to ensure that the first packaging film 1 and the second packaging film 2 can be used normally in the high temperature and high humidity environment of the experiment for a specific duration, avoiding debris caused by damage to the first packaging film 1 and the second packaging film 2 from contaminating the biological indicator culture environment, thereby ensuring the accuracy of the sterilization verification results.

[0026] Preferably, the first packaging film 1 is provided with a first force-bearing portion 11 , which is located at an edge of the first packaging film 1 and is separated from the second packaging film 2 .

[0027] The first force-bearing portion 11 is arranged at the edge of the first packaging film 1 and is separated from the second packaging film 2 to form a separation area. When opening the packaging bag, the experimenter can clamp the first force-bearing portion 11 and the second packaging film 2 with a tool to apply a force. Since the first force-bearing portion 11 is separated from the second packaging film 2, the force directly acts on the edges of the first packaging film 1 and the second packaging film 2. The force is evenly applied from the first force-bearing portion 11 in the direction of opening the first packaging film 1 and the second packaging film 2. At the same time, the toughness of the glassine paper ensures that the first force-bearing portion 11 is not easily damaged when subjected to force, thereby preventing local force from causing damage and tearing of the first packaging film 1 and the second packaging film 2, resulting in debris falling into the biological indicator, thereby affecting the accuracy of the experiment.

[0028] Preferably, the second packaging film 2 is provided with a second force-bearing portion 21, which is located at the edge of the second packaging film 2 and is separated from the first packaging film 1. The first force-bearing portion 11 and the second force-bearing portion 21 are arranged in the same direction, and the length of the first force-bearing portion 11 is greater than that of the second force-bearing portion 21.

[0029] The first packaging film 1 is attached to the second packaging film 2 , and the first force-bearing portion 11 and the second force-bearing portion 21 cooperate with each other for the user to clamp and separate.

[0030] The second force-bearing part 21 is arranged at the edge of the second packaging film 2 and is separated from the first packaging film 1. The first force-bearing part 11 and the second force-bearing part 21 are both located on the same side of the packaging bag, and the length of the first force-bearing part 11 is greater than that of the second force-bearing part 21. Since the first force-bearing part 11 is longer, it is convenient for tools to press. When the experimenter opens it, he uses the tool to press the first force-bearing part 11 and at the same time uses the tool to clamp the second force-bearing part 21 to apply force in the direction of tearing the packaging bag. The two cooperate with each other to tear the packaging bag.

[0031] Preferably, the adhesive 3 application length in the direction of the first force-bearing portion 11 and the second force-bearing portion 21 is greater than the remaining application lengths.

[0032] The coating length of the adhesive 3 on the first packaging film 1 is greater in the direction of the first force-bearing portion 11 and the second force-bearing portion 21 (i.e., the user clamping and separating area) than in other areas (such as the horizontal area or the bottom area). During transportation and experimental operation, the first force-bearing portion 11 is longer and easily squeezed, and the subsequent movement of the second packaging film 2 is likely to cause separation, exposing the biological indicator to the outside. Therefore, a partial margin is provided in the longer adhesive 3 area so that the biological indicator will not be exposed when the first packaging film 1 and the second packaging film 2 are partially separated, thereby reducing losses during transportation and experimental operation.

[0033] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A moist heat sterilization biological indicator packaging bag, characterized in that: The invention comprises a first packaging film, a second packaging film and an adhesive for bonding the first packaging film and the second packaging film; The adhesive is applied on the first packaging film and adhered to the second packaging film to form a sealed space for accommodating the biological indicator; The first packaging film and the second packaging film are both glassine paper; The adhesive is water-based polyurethane glue.

2. The moist heat sterilization biological indicator packaging bag according to claim 1, characterized in that: The first packaging film is provided with a first force-bearing portion, which is located at the edge of the first packaging film and is separated from the second packaging film.

3. The moist heat sterilization biological indicator packaging bag according to claim 2, characterized in that: The second packaging film is provided with a second force-bearing portion, which is located at the edge of the second packaging film and is separated from the first packaging film. The first force-bearing portion and the second force-bearing portion are arranged in the same direction, and the length of the first force-bearing portion is greater than that of the second force-bearing portion. The first packaging film is attached to the second packaging film, and the first force-bearing portion and the second force-bearing portion cooperate with each other to be clamped and separated by a user.

4. The moist heat sterilization biological indicator packaging bag according to claim 3, characterized in that: The adhesive application length in the direction of the first force-bearing portion and the second force-bearing portion is greater than the remaining application length.

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