A well-sealed medical infection-proof collection bag and its application

Abstract

This invention discloses a medical anti-infection collection bag with good sealing performance and its application. The collection bag structure includes: 1) a bag opening tie; 2) a thin film bag body; the thin film bag body is bonded together using an adhesive structure to form a closed bag body. The collection bag of this invention is convenient to use, made of water-resistant and moisture-resistant fabric, effectively solving the problem of air exchange pollution diffusion and achieving a convenient bag-free function, avoiding the spread of external pollution; structurally, it more perfectly solves the sealing problem, and at the same time, it improves the performance of the anti-infection collection bag through special materials and special structures, enhances the reliability of the collection bag under high humidity weather conditions, and is also suitable for the disposal of contaminated fabrics with high water content.

Description

Technical Field

[0001] This invention relates to the field of packaging bag technology, specifically to a medical anti-infection collection bag with good sealing properties and its application. Background Technology

[0002] As we all know, hospitals are places where doctors treat and save lives, and also places where various patients gather, including those with infectious diseases. In the process of treating and caring for patients, a large number of contaminated medical items (containing bodily fluids, blood, excrement, and germs) are generated (such as patients' clothes, bedding, nursing supplies, and medical instruments). If these medical items are not handled properly, they can easily cause cross-infection between patients, between patients and medical staff, and even to the general public. The best way to handle these contaminated medical items is to disinfect the location where they were generated and to seal and isolate them on-site. After transportation, the packaging of these contaminated medical items should be opened as little as possible. Staff should wear special infection-proof clothing and protective gear when handling unsealed contaminated medical items to minimize the spread of disease. The above-mentioned infection problems also exist in the collection and washing of hotel guests' clothing.

[0003] When collecting contaminated medical items, medical staff usually use cloth bags or ordinary plastic bags for packaging. However, using these cloth bags or ordinary plastic bags as packaging for these contaminated medical items will bring great pollution risks: (1) Because cloth bags are not airtight, bacteria or viruses can still spread and spread through the air during the collection, transportation, washing and disinfection of contaminated medical items; (2) When using ordinary plastic bags to package contaminated medical items, medical staff need to open the plastic bags to take out the contaminated medical items when washing and disinfecting them. This process will increase the chance of infection for medical staff and contamination of the workplace.

[0004] Patent CN2008201895201 discloses a waste disposal bag, which includes a bag body for holding objects. The bag body is composed of a water-soluble PVA film and a regular plastic film bonded together. It can effectively handle waste from public places such as hospitals or hotels, preventing cross-infection and secondary pollution. However, its PVA film is exposed on the outer surface of the bag body, making it susceptible to contact with external moisture, resulting in poor reliability. Patent CN2009200590450 discloses a textile washing and disposal bag. The bag body is made of one or more tubular or sheet-like non-water-soluble films sewn together with water-soluble thread. It is made by sewing the edges with sewing thread, and because the bag body cannot be sealed, leakage and spread of contaminants inside the bag are inevitable. Patent CN2009200590465 discloses a textile washing and disposal bag with a tie. The bag body is made of a fully water-soluble film material, which is not suitable for holding fabrics that are damp or contaminated by water-based liquids. Patent CN201120227164X discloses a contaminated fabric treatment bag. The bag has a double-layer structure. The outer bag is sewn together with water-soluble thread using a sewing machine. The inner bag is made of a water-soluble film material. If the contents of the bag are slightly wet and the inner bag is torn, the contaminant inside the bag will leak and spread.

[0005] Therefore, developing a collection bag that is particularly suitable for collecting contaminated items containing highly infectious, airborne sources of infection is an urgent problem to be solved. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a medical anti-infection collection bag with excellent sealing performance. To solve the problem of contaminant diffusion within the bag and achieve convenient, unopenable bag functionality, preventing external contamination, the sealing issue is more effectively addressed structurally. Furthermore, specialized materials and structures enhance the performance of the anti-infection collection bag, improving its reliability in high-humidity environments and making it suitable for handling contaminated fabrics with high water content.

[0007] Specifically, the present invention provides a medical anti-infection collection bag with good sealing performance. The structure of the anti-infection collection bag includes: 1) a bag opening tie; 2) a film bag body; the film bag body and the film narrow strip are bonded together with adhesive to form a closed bag body.

[0008] Preferably, the adhesive structure can be separated and disintegrated in water.

[0009] Preferably, the adhesive structure further comprises a narrow film strip; the bag opening tie and the narrow film strip are water-soluble materials; the water-soluble material is at least one selected from PVA, water-soluble chitosan, polyethylene oxide ether, polyvinylpyrrolidone, water-soluble starch film, sodium carboxymethyl cellulose, sodium polyacrylate, crosslinked povidone, amylopectin, hydroxypropyl methylcellulose, and hydroxypropyl cellulose.

[0010] More preferably, the water-soluble material is a water-soluble PVA material.

[0011] More preferably, the water-soluble PVA material contains a water-soluble matrix and uniformly distributed air bubbles therein.

[0012] More preferably, the volume of air bubbles in the water-soluble PVA material accounts for 0-80% of the total volume.

[0013] More preferably, the volume of air bubbles in the water-soluble PVA material accounts for 0-50% of the total volume.

[0014] More preferably, the raw materials of the water-soluble PVA material, by mass percentage, include 60-80% PVA, 1-10% high molecular polymer, 1-10% filler, 10-30% additives, and the balance being water.

[0015] More preferably, the weight-average molecular weight of the PVA is 40,000 to 80,000.

[0016] More preferably, the polymer is a water-soluble polymer; the water-soluble polymer is one or more of polyvinylpyrrolidone, polyethylene oxide, starch, polymaleic anhydride, chitosan, chitin, hydroxymethyl cellulose, carboxymethyl cellulose, and gelatin.

[0017] More preferably, the polymer is polyvinylpyrrolidone.

[0018] More preferably, the filler is an inorganic filler; the inorganic filler is one of talc, kaolin, silica, and sulfate.

[0019] More preferably, the filler is talc powder.

[0020] More preferably, the additives include plasticizers and surfactants; the weight ratio of the plasticizers and surfactants is 10-30:1-2.5.

[0021] More preferably, the additives include plasticizers and surfactants; the weight ratio of the plasticizers and surfactants is 20:2.

[0022] More preferably, the plasticizer is sorbitol and glycerin; the weight ratio of sorbitol and glycerin is 0.8-1.5:0.8-1.5.

[0023] More preferably, the plasticizer is sorbitol and glycerin; the weight ratio of sorbitol and glycerin is 1:1.

[0024] More preferably, the surfactant is a nonionic surfactant and / or anionic surfactant.

[0025] More preferably, the surfactant is a mixture of sodium dodecyl ether sulfosuccinate and polyoxyethylene stearate ether; the weight ratio of sodium dodecyl ether sulfosuccinate and polyoxyethylene stearate ether is 1.5-2.5:0.8-1.2.

[0026] More preferably, the weight ratio of sodium dodecyl ether sulfosuccinate to polyoxyethylene stearate ether is 2:1.

[0027] Further preferably, the preparation steps of the water-soluble PVA material include: (1) adding the polymer, filler, plasticizer, surfactant and water into a reaction vessel and stirring to mix evenly; (2) slowly adding PVA while stirring at a stirring speed of 500 r / min; and heating to 90°C and keeping warm for 1.5 h; (3) stirring slowly until defoaming is completed; (4) conveying the above mixture to a foam maker through a pipeline to form a glue solution containing uniform bubbles, casting it into a film, and drying it to obtain the final product.

[0028] The PVA material used in this invention contains uniformly distributed air bubbles and exhibits excellent water solubility. Furthermore, by limiting the specific components and proportions of the raw materials, it effectively maintains its mechanical properties while maintaining excellent water solubility. When used as a narrow film tape for bonding collection bags, it provides excellent adhesion, making the collection bags less prone to breakage during storage. When the collection bags are washed in a washing machine, the narrow film tape dissolves quickly in water, allowing the bags to open automatically. Existing collection bags suffer from technical problems such as easy breakage and poor reliability when carrying items, especially during movement and use. On the one hand, the bag body is prone to breakage, and on the other hand, the bag structure is prone to deformation, affecting the collection effect. The infection-proof collection bag of this application, through specific bag structure and material control, achieves a balance of multiple properties such as mechanical strength, airtightness, and moisture resistance. When applied to the washing, sealing, and disinfection of medical items, it provides effective safety assurance, reduces the risk of workplace contamination, and has high practical application value in the medical field.

[0029] Preferably, the bag opening tie is long and narrow, with a width of 10-200 mm and a thickness of 20-100 μm.

[0030] More preferably, the length of the bag opening tie is the same as the length of the film bag body; the bag opening tie can be placed inside the bag or spot-attached to the film bag body.

[0031] More preferably, the bag opening tie is parallel to the long side of the film bag body and is fixed to the outer surface of the film bag body by a water-soluble or non-water-soluble adhesive in a dotted manner.

[0032] Preferably, the film bag body is at least one quadrilateral non-water-soluble material; the non-water-soluble material is selected from at least one of PE, PP, PET, PA, PVC film, PBAT, PBS, PLA, PHA, PPC, and PCL.

[0033] More preferably, the non-water-soluble material is HDPE.

[0034] Preferably, the long side of the film bag is 50-200cm and the short side is 40-190cm;

[0035] More preferably, the thickness of the film bag is 15-100 μm.

[0036] Preferably, the narrow strip of film is fixed parallel to one side of the film bag and connected to the film bag body.

[0037] More preferably, the width of the narrow strip of the film is 10-200 mm.

[0038] More preferably, the length of the narrow strip of film is the same as that of the film bag body.

[0039] Using a narrow film strip of a certain width effectively maintains the bag's sturdiness while allowing it to dissolve quickly during washing, resulting in good performance. The inventors discovered that if the film strip is too wide, the collection bag may break slowly during washing; conversely, if the strip is too narrow, it may affect the bag's stability when storing items. Only a film strip within a specific width range ensures the collection bag maintains good stability when storing items and breaks easily when placed in a washing machine, facilitating the washing of clothes and other items.

[0040] More preferably, the number of narrow strips in the film is 2.

[0041] Preferably, the bonding structure of the film bag is a connecting structure A, where the film bag is first folded inwards by 5-20cm at the connecting structure A, and the folded part is bonded to the narrow strip of film with adhesive to form a closed bag body.

[0042] More preferably, the width of the narrow strip of the film does not exceed the folded portion of the film bag.

[0043] More preferably, the width of the folded portion of the film bag body on the inner side of the bag body needs to exceed the narrow strip of the film by 2-3 cm.

[0044] The two sides of the bag's film are folded inwards, and a narrow strip of water-soluble film is placed between the folded portions of the two film bags. These are then bonded together with a thin adhesive strip to form a collection bag. The inventors discovered that because the two sides of the bag's film are folded inwards, and the narrow strip of film near the inside of the bag is covered by the folded portion of the non-water-soluble plastic bag, the collection bag avoids direct contact between the narrow strip of film and wet items inside, ensuring that the bag's strength is not compromised. When the collection bag is placed in a washing machine, the outward force of the wet items creates tension in the bag, further stretching the joints and allowing water to further erode the narrow strip of water-soluble film. As the narrow strip absorbs water, it loses its mechanical properties and gradually opens, causing the two layers of non-water-soluble film to separate. The wet items escape through the cracks, achieving the desired effect.

[0045] More preferably, the narrow strip of film is located in the middle of the folded portion of the film bag.

[0046] Preferably, the adhesive at the connecting structure A is a thin strip adhesive layer a with a width of 1-200mm; the length of the thin strip adhesive layer a is consistent with the length of the film bag body; and the width of the thin strip adhesive layer a does not exceed the width range of the narrow strip of the film.

[0047] More preferably, the strip-shaped thin adhesive layer a extends upward from the bottom of the film bag to the bag opening.

[0048] More preferably, the strip-shaped thin adhesive layer a is located in the middle of the narrow strip of the film.

[0049] More preferably, the width of the strip-shaped thin adhesive layer a is 1-4 mm.

[0050] More preferably, the connecting structure A is located on at least one side of the film bag.

[0051] More preferably, the film bag body is composed of two non-water-soluble films, the connecting structure A is located on both sides of the film bag body, and the bottom of the film bag body is heat-sealed to form a bag by heat fusion welding.

[0052] More preferably, the film bag body is made of two rolls of flat, unfolded single-layer film before bag making. After being put into the machine, the two sides of the film are folded inward by 5-20cm for adhesive application. Both sides of the film bag body need to be coated with a water-resistant adhesive.

[0053] More preferably, the heat-sealing line at the bottom of the film bag is located 1-20cm above the bottom of the bag.

[0054] Preferably, in order to solve the problem of poor sealing due to material differences during heat sealing, the bonding structure of the film bag body further includes a connecting structure B; the adhesive at the connecting structure B is a strip-shaped thin adhesive layer b; the strip-shaped thin adhesive layer b extends upward along the bottom of the film bag body and is at least 1 mm above the position of the bottom heat seal line of the bag.

[0055] More preferably, the connecting structure B is located on at least one side of the film bag.

[0056] More preferably, the film bag body consists of two non-water-soluble films, and the connecting structure B is located on both sides of the film bag body.

[0057] More preferably, the length of the strip-shaped thin adhesive layer b is 5-10 cm.

[0058] More preferably, the length of the strip-shaped thin adhesive layer b is 10 cm.

[0059] More preferably, the edge of the adhesive layer b near the inside of the bag extends beyond the edge of the narrow strip of film near the inside of the bag, and the other side of the adhesive layer b is seamlessly connected to the adhesive layer a.

[0060] When the bottom of the bag is heat-sealed with a thin strip of adhesive, the thickness difference caused by the material and number of layers between the water-soluble and non-water-soluble materials leads to poor sealing. This easily results in air leakage points at the junction of these differences during heat sealing, and may also lead to insufficient bag bottom stability, potentially causing the bag to puncture. The inventors unexpectedly discovered that using the aforementioned thin strip of adhesive layer b at the heat-sealing location at the bottom of the bag, with the width of layer b being greater than the narrow strip of the water-soluble film, and applying it to both sides of each film, greatly facilitates the adhesion between the non-water-soluble film bag body and the narrow strip of the water-soluble film. This ensures no air leakage points during heat sealing, increases the sealing of the collection bag, and further enhances the stability of the bag bottom. When washing medical supplies, the infection-preventing collection bag needs to maintain its adhesive strength and remain closed while holding wet materials; however, when immersed in water, it needs to be quickly disassembled to release the contents for washing. Traditional collection bags cannot simultaneously meet both of these conditions. Based on a specific collection bag structure, this application controls the edge of the thin adhesive strip b near the inside of the bag to extend beyond the edge of the narrow film strip near the inside of the bag. The other side of the thin adhesive strip b is seamlessly connected to the thin adhesive strip a. This ensures the bonding strength of the collection bag when dry or wet materials are present, improves the moisture resistance of the collection bag, and shortens the disassembly time of the collection bag. It can be quickly disassembled within 5 minutes of immersion in liquid.

[0061] More preferably, the edge of the strip-shaped thin adhesive layer b near the inside of the bag extends 3-10 mm beyond the edge of the film narrow strip near the inside of the bag.

[0062] More preferably, the edge of the strip-shaped thin adhesive layer b near the inside of the bag extends 5 mm beyond the edge of the film narrow strip near the inside of the bag.

[0063] Preferably, the adhesive is at least one of polyurethane hot melt adhesive, EVA hot melt adhesive, polyester hot melt adhesive, polyamide hot melt adhesive, and rubber-based hot melt adhesive. The preferred adhesive of this application is coated onto an anti-infection collection bag with a specific structure. The resulting anti-infection collection bag maintains a sealing effect under non-washing conditions, disintegrates rapidly during washing without leaving any adhesive residue, and exhibits optimal effectiveness at different stages of action, thus having a positive significance for blocking viruses.

[0064] A second aspect of the present invention provides an application of the above-mentioned novel infection-proof collection bag, including its application in sealed transportation, sealed washing, and sealed storage.

[0065] Beneficial effects:

[0066] (1) The present invention collects the non-water-soluble film of the bag body, folds inward on both sides, places the narrow strip of water-soluble film in the middle of the two non-water-soluble bag bodies, and the narrow strip of water-soluble plastic near the inside of the bag body is covered by the folded part of the non-water-soluble plastic bag body. When used, it can effectively prevent the narrow strip of water-soluble film from being directly contacted by the wet matter inside the bag, ensuring that the strength of the bag body is not damaged and has high firmness.

[0067] (2) The bag body is formed by hot melt adhesive. The adhesive structure combines two coating methods, which allows the collection bag to dissolve quickly in water when used, effectively maintain the sealing and firmness of the bag body, and enable continuous mechanized production.

[0068] (3) The collection bag of the present invention is easy to use, made of water-resistant and moisture-resistant fabric, and can ensure that the bag is completely sealed, providing good and reliable protection and isolation. It is particularly suitable for collecting contaminated items containing highly infectious or airborne sources of infection.

[0069] (4) The collection bag of the present invention has airtightness, and the bag body can achieve airtight transportation and airtight storage of the contents before washing; the collection bag has the function of automatic breaking and disassembly in water, and the collection bag can be put into the container without opening during washing. Attached Figure Description

[0070] Figure 1 Front view of the infection prevention collection bag

[0071] Figure 2 Connection structure A

[0072] Figure 3 Connection structure B

[0073] Figure 4 Cross-sectional view of the middle part of the infection-proof collection bag

[0074] Figure 5 Cross-sectional view of the heat-sealed section of the infection-proof collection bag (unsealed).

[0075] Figure 6 A diagram illustrating the rupture of the middle section of the infection-prevention collection bag in an aquatic environment.

[0076] In the diagram: 1-Bag body; 2-Bag opening; 3-Bag bottom; 4-Bag bottom heat seal; 5-Connecting structure A; 6-Connecting structure B; 7-Narrow film strip; 8-Bag opening tie; 9-Thin adhesive strip a; 10-Thin adhesive strip b; Detailed Implementation

[0077] Example 1

[0078] See Figures 1-6 This embodiment provides a medical anti-infection collection bag with good sealing performance. The structure of the anti-infection collection bag includes: a bag opening tie 8, a film bag body 1, and a film narrow strip 7. The film bag body 1 and the film narrow strip 7 are bonded together with adhesive to form a closed bag body.

[0079] The bag opening tie 8 and the film narrow strip 7 are made of water-soluble PVA material. The raw materials of the water-soluble PVA, by weight percentage, include 60% PVA, 5% polymer, 5% filler, 10% additives, and the balance water. The weight-average molecular weight of the PVA is 60,000; the polymer is polyvinylpyrrolidone; the filler is talc; the additives are a mixture of plasticizer and surfactant in a weight ratio of 20:1; the plasticizer is a compound of sorbitol and glycerin in a weight ratio of 1:1; and the surfactant is a compound of sodium dodecyl ether sulfosuccinate and polyoxyethylene stearyl ether in a weight ratio of 2:1.

[0080] The preparation steps of water-soluble PVA material include: (1) adding polymer, filler, plasticizer, surfactant and water into a reaction vessel and stirring to mix evenly; (2) slowly adding PVA while stirring, stirring speed 500r / min; and heating to 90℃ and keeping it at that temperature for 1.5h; (3) stirring slowly until defoaming is complete; (4) conveying the above mixture to a foam maker through a pipeline to form a glue solution containing uniform bubbles, casting it into a film, and drying it to obtain the final product.

[0081] The bag opening tie 8 is 20mm wide, 30μm thick, and its length is the same as that of the film bag.

[0082] The film bag body 1 is made of non-water-soluble HDPE, and the HDPE was purchased from Taian Taidong Engineering Materials Co., Ltd.; the long side of the film bag body 1 is 100cm, the short side is 95cm, and the thickness is 40μm.

[0083] The film narrow strip 7 is parallel to the long side of the film bag and connected to the film bag body, and its length is the same as that of the film bag body; the width of the film narrow strip 7 is 20mm.

[0084] The bonding structure of the film bag 1 is the connecting structure A5. At the connecting structure A5, the film bag is first folded 8cm inward. The folded part is bonded to the film narrow strip with adhesive to form a closed bag body. The width of the folded part of the film bag 1 on the inner side of the bag exceeds the edge of the film narrow strip 7 by 3cm. The film narrow strip 7 is located in the middle of the folded part of the film bag 1.

[0085] The thin adhesive strip a9 at the connecting structure A5 is 20μm thick, 3mm wide, and has the same length as the film bag 1; the thin adhesive strip a9 is located in the middle of the film narrow strip 7.

[0086] The strip-shaped thin adhesive layer b10 at the connecting structure B6 is 20μm thick and 8cm long, extending upward along the bottom of the film bag 1; its width on the inner side of the bag exceeds the width of the film narrow strip 7 by 5mm, and its other side is seamlessly connected to the strip-shaped thin adhesive layer a9.

[0087] The adhesive is a polyurethane hot melt adhesive. Specifically, the polyurethane hot melt adhesive is PUR hot melt adhesive model 6015L manufactured by Guangzhou Bailijia Technology Co., Ltd.

[0088] The film bag body 1 is made of two pieces of non-water-soluble material, and the connecting structure A 5 and connecting structure B 6 are located on both sides of the film bag body. The bottom of the film bag body 1 is heat-sealed by heat fusion welding to form a heat-sealed bag bottom 4.

[0089] In this embodiment, the film bag 1 is folded inward on both sides, and the narrow film strip 7 near the inside of the bag is covered by the folded portion of the film bag 1. When collecting items, this collection bag can prevent the narrow film strip 7 from directly contacting the wet items inside the bag, ensuring that the bag's strength is not compromised. When the collection bag is placed in a washing machine, the outward force of the wet items inside creates tension in the bag, further stretching the joints of the bag. This allows water to further erode the water-soluble narrow film strip 7, causing the narrow film strip 7 in contact with water to lose its mechanical properties after absorbing water and gradually open up. This causes the two layers of non-water-soluble film bag 1 of the collection bag to separate, and the wet items escape from the cracks, achieving the desired effect (e.g., Figure 6 (As shown).

[0090] Comparative Example 1

[0091] The specific implementation method of this embodiment is the same as that of embodiment 1, except that this embodiment does not include connection structure B.

[0092] Comparative Example 2

[0093] The specific implementation method of this embodiment is the same as that of embodiment 1, except that: in this embodiment, the edge of the adhesive layer b 10 of the strip-shaped thin adhesive layer at the overlapping connection B6 does not extend beyond the edge of the film narrow strip 7 near the inside of the bag.

[0094] Comparative Example 3

[0095] The specific implementation method of this embodiment is the same as that of embodiment 1, except that: in this embodiment, the strip-shaped thin adhesive layer a9 at the connection structure A5 is 20μm thick and 6mm wide.

[0096] Comparative Example 4

[0097] The specific implementation method of this embodiment is the same as that of embodiment 1, except that the film bag 1 in this embodiment is not folded, but is directly bonded to the film narrow strip 7.

[0098] Comparative Example 5

[0099] The specific implementation method of this embodiment is the same as that of embodiment 1, except that: at the connection structure A5 in this embodiment, the edge of the folded part of the film bag 1 near the inside of the bag body coincides with the edge of the film narrow strip 7.

[0100] Performance Evaluation

[0101] The following tests were all conducted in accordance with the test methods of the national standard GB / T 42067-2022.

[0102] Sealing test

[0103] Connect the air inlet pipe and pressure gauge to the bag opening. Seal the bag opening, inject air, and observe the pressure changes. Inflate the bag until the internal pressure reaches 50 Pa. Allow it to stand for 2 hours to maintain an internal pressure of at least 20 Pa.

[0104] Example 1 >20pa Comparative Example 1 0pa Comparative Example 2 0pa

[0105] Wet load-bearing capacity test

[0106] Step 1: Weigh out 7 kg of dry fabric, about 30 cm x 30 cm in size. First, take 4.9 kg of dry fabric and immerse it completely in 23°C water until it is fully wet. Then take it out and wring out the excess liquid. The weight of the wet fabric after immersion should be three times the weight of the dry fabric before immersion.

[0107] Step 2: Take the remaining 2.1 kg of dry fabric and mix it thoroughly and evenly with the wet fabric from Step 1.

[0108] Step 3: Place the mixed fabric from Step 2 into the infection bag, expel excess air from the bag, hold the bag about 20cm below the opening and lift it up. If the bag does not break, hang it in an environment with a temperature of 25℃ and a relative humidity of 50% for 16 hours. Then shake it vertically 20cm up and down 3 times at a frequency of about 70 times / minute. If the bag does not leak water or break, it is qualified. Three test samples are required.

[0109] Example 1 qualified Comparative Example 4 Water seepage, damage

[0110] Washing test:

[0111] The collection bags prepared in the examples and comparative examples were subjected to washing tests. Each example and comparative example was tested 100 times. The collection bags were filled with medical gloves and washed in a 250W washing machine for 10 minutes. The washing capacity was 10 kg. After 10 minutes, the contents of the collection bag inside the detergent were observed. If the collection bag completely released the contents, it was considered qualified. If some contents were still retained, it was considered unqualified. The number of unqualified times was less than or equal to 10 and was recorded as A. The number of unqualified times was more than 10 and was recorded as B.

[0112] Table 1

[0113] Example 1 A Comparative Example 1 A Comparative Example 2 A Comparative Example 3 B Comparative Example 4 B Comparative Example 5 A

[0114] As can be seen from the embodiments and comparative examples, the novel anti-infection collection bag provided by the present invention has good anti-infection, sealing and preservation performance, which greatly reduces the risk of heat transfer and virus spread of medical supplies. It is suitable for promotion in the medical and washing fields and has broad development prospects.

Claims

1. A medical infection-proof collection bag with good sealing properties, characterized in that, The structure of the collection bag includes: 1) a bag opening tie; 2) a thin film bag body; the thin film bag body is bonded together using an adhesive structure to form a closed bag body; The adhesive structure also includes a thin film strip; the bag opening tie and the thin film strip are water-soluble materials; The bonding structure of the film bag is a connecting structure A. At the connecting structure A, the film bag is first folded inwards by 5-20cm. The folded part is bonded to the narrow strip of film with adhesive to form a closed bag body. The bonding structure of the film bag also includes a connecting structure B; the adhesive at the connecting structure B is a strip of thin adhesive layer b; the strip of thin adhesive layer b extends upward along the bottom of the film bag and is at least 1 mm above the heat seal line at the bottom of the bag.

2. The medical anti-infection collection bag with good sealing properties according to claim 1, characterized in that, The adhesive structure can separate and disintegrate in water.

3. The medical infection-proof collection bag with good sealing properties according to claim 2, characterized in that, The water-soluble material is at least one of the following: PVA, water-soluble chitosan, polyoxyethylene ether, polyvinylpyrrolidone, water-soluble starch film, sodium carboxymethyl cellulose, sodium polyacrylate, crospovidone, amylopectin, hydroxypropyl methylcellulose, and hydroxypropyl cellulose.

4. The medical anti-infection collection bag with good sealing properties according to claim 1, characterized in that, The film bag body is at least one quadrilateral non-water-soluble material; the non-water-soluble material is selected from at least one of PE, PP, PET, PA, PVC film, PBAT, PBS, PLA, PHA, PPC, and PCL.

5. The medical anti-infection collection bag with good sealing properties according to claim 1, characterized in that, The adhesive at the connection structure A is a thin strip adhesive layer a with a width of 1-200mm; the length of the thin strip adhesive layer a is the same as the length of the film bag; the width of the thin strip adhesive layer a does not exceed the width range of the narrow strip of the film.

6. The medical infection-proof collection bag with good sealing properties according to claim 1, characterized in that, The film bag body consists of two non-water-soluble films, the connecting structure A is located on both sides of the film bag body, and the bottom of the film bag body is heat-sealed by heat fusion welding to form a bag.

7. The medical infection-proof collection bag with good sealing properties according to claim 1, characterized in that, The edge of the strip-shaped thin adhesive layer b near the inside of the bag extends beyond the edge of the narrow strip of film near the inside of the bag, and the other side of the strip-shaped thin adhesive layer b is seamlessly connected to the strip-shaped thin adhesive layer a.

8. The application of an infection-proof collection bag according to any one of claims 1 to 7, characterized in that: This includes the application of the collection bag in sealed storage, sealed transportation, and sealed washing and dispensing.

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