CN116081086A

CN116081086A - Medical anti-infection collecting bag with good sealing performance and application thereof

Info

Publication number: CN116081086A
Application number: CN202310064269.5A
Authority: CN
Inventors: 刘永业; 莫雄勋
Original assignee: Jiangmen Proudly Water soluble Plastic Co Ltd
Current assignee: Jiangmen Proudly Water soluble Plastic Co Ltd
Priority date: 2023-01-29
Filing date: 2023-01-29
Publication date: 2023-05-09

Abstract

The invention discloses a medical anti-infection collecting bag with good sealing performance and application thereof. The structure of the collecting bag comprises: 1) A bag mouth binding belt; 2) A film bag body; the film bag body is adhered by using an adhesion structure to form a closed bag body. The collecting bag is convenient to use, and the waterproof and moisture-proof fabric can effectively solve the problem of air exchange pollution diffusion and realize a convenient bag-dismantling-free function, thereby avoiding external pollution diffusion; the sealing problem is solved more perfectly in the structure, meanwhile, the anti-infection collecting bag performance is improved through special materials and special structures, the reliability of the collecting bag under the high humidity weather environment condition is enhanced, and the anti-infection collecting bag is also suitable for the treatment of polluted fabrics with high water content.

Description

Medical anti-infection collecting bag with good sealing performance and application thereof

Technical Field

The invention relates to the technical field of packaging bags, in particular to a medical anti-infection collecting bag with good sealing performance and application thereof.

Background

Hospitals are well known places for doctors to cure diseases and rescue people, and are also places where various patients are gathered, and patients suffering from infectious diseases are not spent. A large number of contaminated (body fluid, blood, excrement, germs) medical articles (such as patient's washcloths, bedclothes, nursing articles, medical appliances, etc.) are also produced in the treatment and nursing of patients. These medical articles, if not handled properly, can easily cause cross-contamination between patients, between patients and medical personnel, and even to the public. The best method for disposing the contaminated medical articles is to sterilize the production place and to perform sealing, packaging and isolation treatment on the contaminated medical articles in place, and the packaging bags of the contaminated medical articles are opened as little as possible after the contaminated medical articles are carried out. Workers should wear special anti-infective clothing and protective clothing when touching non-enclosed and packaged polluted medical articles so as to minimize the infection and spread of diseases. The infection problem also exists during the collection and washing of hotel guest clothing.

When medical staff collects contaminated medical articles, the medical staff usually adopts cloth bags or common plastic bags for packaging, however, when the cloth bags or the common plastic bags are used as the packages of the contaminated medical articles, great pollution hidden danger is brought to the medical staff (1), the dry cloth bags do not have tightness, so germs or viruses can still diffuse and spread through air in the process of collecting, transporting, washing and sterilizing the contaminated medical articles; (2) When the common plastic packaging bag is used for packaging the polluted medical articles, medical staff need to open the plastic packaging bag to take out the polluted medical articles when washing and sterilizing the polluted medical articles, and the process can increase the infection to the medical staff and the pollution opportunity to workplaces.

Patent CN2008201895201 discloses a sewage treatment bag, which comprises a bag body for containing objects, wherein the bag body is formed by mutually bonding a water-soluble PVA film and a common plastic film, can effectively treat sewage in public places such as hospitals or hotels, and prevent cross infection and secondary pollution, but the PVA film is exposed on the outer surface of the bag body, so that the bag body is easily influenced by contact of external wet objects, and has poor reliability. Patent CN2009200590450 discloses a fabric washing disposal bag, the bag body is formed by sewing one or more than one tubular or sheet-shaped water-insoluble film with water-soluble thread, the bag is made by sewing the edge with sewing thread, and the leakage of pollution source in the bag inevitably occurs because the bag body cannot be sealed. Patent CN2009200590465 discloses a fabric washing disposal bag with binding bands, the bag body is a full water-soluble film material bag body, which is unfavorable for containing fabrics which are biased to be moist or polluted by water liquid. Patent CN201120227164X discloses a polluted fabric treatment bag, the bag is a double-layer structure, the bag body of the outer bag is sewn by a sewing machine, the bag body of the inner bag is made of a water-soluble film material, and the bag body of the inner bag is leaked and spread by the pollution source in the bag as long as the content of the bag slightly wets the inner bag.

Therefore, the development of a collection bag particularly suitable for the collection of contaminated objects of a heavily infectious, air-borne infection source is an urgent problem to be solved at present.

Disclosure of Invention

Aiming at the problems, the invention provides a medical anti-infection collecting bag with good sealing performance. In order to solve the pollution diffusion of the pollutants in the bag body and realize the convenient bag-dismantling-free function, the external pollution diffusion is avoided, the problem of tightness is more perfectly solved in the structure, meanwhile, the anti-infection collecting bag performance is improved through special materials and special structures, the reliability of the collecting bag under the environment condition of high humidity weather is enhanced, and the bag is also suitable for the treatment of polluted fabrics with high water content.

Specifically, the invention provides a medical anti-infection collecting bag with good sealing performance, and the structure of the anti-infection collecting bag comprises: 1) A bag mouth binding belt; 2) A film bag body; the film bag body and the film narrow band are bonded together by using an adhesive to form a closed bag body.

Preferably, the bonded structure is capable of being separated and disintegrated in water.

Preferably, the adhesive structure further comprises a thin film narrow band; the bag opening ribbon and the film narrow band are made of water-soluble materials; the water-soluble material is at least one of PVA, water-soluble chitosan, polyoxyethylene ether, polyvinylpyrrolidone, water-soluble starch film, sodium carboxymethyl cellulose, sodium polyacrylate, crosslinked povidone, pullulan, hydroxypropyl methylcellulose and hydroxypropyl cellulose.

Further preferably, the water-soluble material is a water-soluble PVA material.

Further preferably, the water-soluble PVA material contains a water-soluble matrix and bubbles uniformly distributed therein.

Further preferably, the volume of bubbles in the water-soluble PVA material is 0 to 80% of the total volume.

Further preferably, the volume of the bubbles in the water-soluble PVA material is 0 to 50% of the total volume.

Further preferably, the raw materials of the water-soluble PVA material comprise, by mass, 60-80% of PVA, 1-10% of high polymer, 1-10% of filler, 10-30% of auxiliary agent and the balance of water.

More preferably, the weight average molecular weight of the PVA is 4 to 8 ten thousand.

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

Further preferably, the high molecular polymer is polyvinylpyrrolidone.

Further preferably, the filler is an inorganic filler; the inorganic filler is one of talcum powder, kaolin, silicon dioxide and sulfate.

Further preferably, the filler is talc.

Further preferably, the auxiliary agent comprises a plasticizer and a surfactant; the weight ratio of the plasticizer to the surfactant is 10-30:1-2.5.

Further preferably, the auxiliary agent comprises a plasticizer and a surfactant; the weight ratio of the plasticizer to the surfactant is 20:2.

Further preferably, the plasticizer is sorbitol and glycerin; the weight ratio of the sorbitol to the glycerol is 0.8-1.5:0.8-1.5.

Further preferably, the plasticizer is sorbitol and glycerin; the weight ratio of sorbitol to glycerin is 1:1.

Further preferably, the surfactant is a nonionic surfactant and/or an anionic surfactant.

Further preferably, the surfactant is a mixture of sodium dodecyl ether sulfosuccinate and polyoxyethylene stearate; the weight ratio of the sodium dodecyl ether sulfosuccinate to the polyoxyethylene stearic acid ether is 1.5-2.5:0.8-1.2.

Further preferably, the weight ratio of the sodium dodecyl ether sulfosuccinate to the polyoxyethylene stearate is 2:1.

Further preferably, the preparation step of the water-soluble PVA material includes: (1) Putting a high molecular polymer, a filler, a plasticizer, a surfactant and water into a reaction kettle, and uniformly stirring and mixing; (2) Slowly adding PVA while stirring, and stirring at a rotation speed of 500r/min; and heating to 90 ℃ and then preserving heat for 1.5h; (3) stirring slowly until defoaming is completed; (4) And conveying the mixture to a bubble making device through a pipeline to form a glue solution containing uniform bubbles, casting the glue solution into a film, and drying the film to obtain the high-temperature-resistant foam.

The PVA material used in the invention contains uniformly distributed bubbles, has excellent water solubility, and simultaneously, the PVA material has excellent water solubility and simultaneously, the mechanical property of the PVA material is effectively maintained by limiting specific components and proportions of the contained raw materials. When the adhesive is used as a film narrow band for bonding a collecting bag, the adhesive has excellent bonding firmness, so that the collecting bag is not easy to crack when being used for storing; when the collecting bag is placed in the washing machine for washing, the film narrow band can be quickly dissolved in water again, and the effect of automatically opening the bag is achieved. The existing collecting bag has the technical problems of easy breakage and poor reliability when carrying articles, particularly when moving and using, on one hand, the bag body is easy to break, and on the other hand, the bag structure is easy to deform, so that the collecting effect is influenced. The anti-infection collecting bag can achieve the balance of the mechanical strength, the tightness, the moisture resistance and other performances of the collecting bag through the specific bag body structure and material control, can provide effective safety guarantee when being applied to washing, sealing and sterilizing of medical articles, reduces pollution risks of workplaces, and has high practical application value in the medical field.

Preferably, the bag opening ribbon is strip-shaped, the width of the bag opening ribbon is 10-200mm, and the thickness of the bag opening ribbon is 20-100 mu m.

Further preferably, the length of the bag opening binding belt is consistent with the length of the film bag body; the bag opening binding belt can be placed in a bag or fixed on a film bag body in a spot-bonding mode.

Further preferably, the bag opening binding belt is parallel to the long edge of the film bag body and is fixed on the position of the outer side surface of the bag body of the film bag body through point bonding of the water-soluble or water-insoluble adhesive body.

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

Further preferably, the water insoluble material is HDPE.

Preferably, the length of the long side of the film bag body is 50-200cm, and the length of the short side is 40-190cm;

further preferably, the film bag has a thickness of 15 to 100. Mu.m.

Preferably, the film strip is fixed parallel to one side of the film bag body and connected with the film bag body.

Further preferably, the width of the thin film narrow band is 10-200mm.

Further preferably, the length of the film strip is consistent with that of the film bag body.

The film narrow band with a certain width can effectively keep the firmness of the bag body, can be quickly dissolved when being cleaned, and has good use effect. The inventors have found that if the film is too narrow, it may cause the bag to break at a slower rate during cleaning; the narrow band of film may affect the firmness of the bag during storage. Only in the narrow band of the film with a specific width range, the collecting bag has better firmness when being stored and can be broken when being put into a washing machine for cleaning, thereby being convenient for cleaning clothes and the like.

Further preferably, the number of the thin film strips is 2.

Preferably, the bonding structure of the film bag body is a connecting structure A, the film bag body is folded for 5cm to 20cm towards the inner direction of the bag at the connecting structure A, and the folded part is bonded with the film narrow band by using an adhesive to jointly form a closed bag body.

It is further preferred that the film strip width does not exceed the folded portion of the film pouch.

Further preferably, the width of the folded part of the film bag body close to the inner side of the bag body is required to exceed the width of the film narrow band by 2-3cm.

The two sides of the bag body film are respectively folded inwards, and the water-soluble film narrow band is arranged between the folded parts of the two film bag bodies, and the two film bag bodies are bonded through the strip-shaped film adhesive layer to form the collecting bag. The inventor finds that, because the two sides of the film of the bag body are folded inwards, and the film narrow band close to the inner part of the bag body is covered by the folded part of the water-insoluble plastic bag body, when the collecting bag collects articles, the film narrow band can be prevented from being directly contacted by wet articles in the bag, and the strength of the bag body is ensured not to be damaged. When the collecting bag is in the washing machine, the bag generates tension due to the outward acting force of the internal wet matters, the connecting part of the bag body is further unfolded, water is further eroded by the water-soluble film narrow band, the water-soluble film narrow band contacted with the water loses mechanical property after absorbing water and is gradually unfolded, and then the two layers of non-water-soluble film bag bodies of the collecting bag are separated, so that the wet matters run out from the cracks, and the using effect is achieved.

Further preferably, the film strip is located at a middle position of the folded portion of the film bag body.

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

Further preferably, the strip-shaped thin adhesive layer a extends upwards to the bag opening along the bottom of the thin film bag body.

Further preferably, the strip-shaped thin adhesive layer a is positioned at the middle position of the thin film narrow strip.

Further preferably, the width of the strip-shaped thin adhesive layer a is 1-4mm.

Further preferably, the connecting structure A is located on at least one side of the film bag body.

Further preferably, the film bag body is two pieces of water-insoluble films, the connecting structures A are positioned on two sides of the film bag body, and the bottom of the film bag body is heat-sealed in a hot-melting and heat-sealing mode to form the bag.

Further preferably, the film bag body is formed by two rolls of flat unfolded single-layer films before bag making, and two sides of the film are folded inwards for 5-20cm in width for gluing after the film bag body is put on a machine; both sides of the film bag body are required to be coated with an adhesive with good water resistance.

Further preferably, the heat sealing line at the bottom of the film bag body is positioned at 1 cm to 20cm above the bag bottom.

Preferably, in order to solve the problem of poor sealing performance caused by material difference during heat sealing, the bonding structure of the film bag body further comprises 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 upwards along the bottom of the thin film bag body and is at least 1mm higher than the position of the heat sealing line at the bottom of the bag.

Further preferably, the connecting structure B is located on at least one side of the film bag body.

Further preferably, the film bag body is two pieces of water-insoluble films, and the connecting structures B are positioned on two sides of the film bag body.

Further preferably, the length of the strip-shaped thin adhesive layer b is 5-10cm.

Further preferably, the length of the ribbon-shaped thin adhesive layer b is 10cm.

Further preferably, the edge of the adhesive layer on the inner side of the bag body of the strip-shaped thin adhesive layer b exceeds the edge of the thin film strip on the inner side of the bag body, and the other side of the strip-shaped thin adhesive layer b is connected with the strip-shaped thin adhesive layer a in a seamless mode.

When the strip-shaped thin adhesive layer structure is heat-sealed at the bottom of the bag body, the problem of poor tightness is generated due to the difference of materials of water-soluble materials and water-insoluble materials and the thickness caused by different layers, air leakage points are easily generated at the difference junction during heat sealing of the bottom, and the firmness of the bottom of the bag is possibly caused to be insufficient, so that the possibility of penetrating the bag is generated. The inventor surprisingly found that the strip-shaped thin adhesive layer b is used at the position of the heat-sealing position of the bag bottom, the width of the strip-shaped thin adhesive layer b is required to be larger than that of the narrow water-soluble film band, both sides of each film need to be coated and scraped, the joint of the water-insoluble film bag body and the narrow water-soluble film band can be very beneficial to the joint, the air leakage point can be avoided during heat sealing, the sealing performance of the collecting bag is improved, and the firmness of the bag bottom is further enhanced. When the anti-infection collecting bag washes medical articles, on one hand, the bonding strength can be kept when wet articles are contained, and the collecting bag is kept in a closed state; when the collecting bag is immersed in water, the collecting bag needs to be quickly disassembled to release the content for washing, and the conventional collecting bag cannot meet the two conditions. According to the bag, on the basis of a specific collecting bag structure, the edge of the adhesive layer on the inner side of the bag body, which is close to the adhesive layer, of the strip-shaped thin adhesive layer b exceeds the edge of the thin film on the inner side of the bag body, the other side of the strip-shaped thin adhesive layer b is seamlessly connected with the strip-shaped thin adhesive layer a, so that on one hand, the bonding strength of the collecting bag is ensured when dry and wet matters exist, the moisture resistance of the collecting bag is improved, on the other hand, the disassembly time of the collecting bag can be shortened, and the bag can be quickly disassembled within 5 minutes of immersing in liquid.

Further preferably, the edge of the adhesive layer b on the inner side of the bag body exceeds the edge of the adhesive layer on the inner side of the bag body by 3-10mm.

Further preferably, the edge of the adhesive layer b on the inner side of the bag body exceeds the edge of the adhesive layer on the inner side of the bag body by 5mm.

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 hot melt adhesive. The preferred gluing agent of this application coats in the anti-infection collecting bag of specific structure, and the anti-infection collecting bag of gained can keep sealed effect under non-washing condition, can disintegrate fast, no colloid remains under the washing process, all presents best effect at different action stages, to the suppression of epidemic situation under the new crown epidemic situation background, the blocking of virus all has positive meaning.

The second aspect of the invention provides the application of the novel anti-infection collecting bag, comprising the application of the collecting bag in sealed transportation, sealed washing and sealed storage.

The beneficial effects are that:

(1) The two sides of the water-insoluble film of the collecting bag body are respectively folded inwards, the water-soluble film narrow band is arranged between the two water-insoluble bag body film bag bodies, the water-soluble plastic narrow band close to the inner parts of the bag bodies is covered by the folded parts of the water-insoluble plastic bag bodies, and when the collecting bag is used, the water-soluble film narrow band can be effectively prevented from being directly contacted by wet matters in the bag, the strength of the bag body is ensured not to be damaged, and the collecting bag has high firmness.

(2) The bag body is formed by adopting a gluing mode of hot melt glue, and the structure of the gluing is combined by adopting two gluing modes, so that the collecting bag can be quickly dissolved in water when in use, the tightness and the firmness of the bag body are effectively maintained, and continuous mechanical production can be realized.

(3) The collecting bag is convenient to use, is waterproof and moisture-proof, and can ensure that the bag body is fully sealed, and has good and reliable protective isolation effect. Is especially suitable for collecting the infectious pollutant in the way of re-infectivity and air transmission.

(4) The collecting bag has tightness, and the bag body can realize sealed transportation and sealed storage of the content before washing; the collecting bag has the function of automatic breaking and disintegration in water, and can be put in a closed manner without unpacking the collecting bag during washing.

Drawings

FIG. 1 is a front view of an anti-infective collecting bag

FIG. 2 connection A

FIG. 3 connection B

FIG. 4 is a cross-sectional view of the intermediate portion of the anti-infective collection bag

FIG. 5 cross-sectional view of the heat seal of the anti-infective collecting bag (not heat sealed)

FIG. 6 is a schematic illustration of a rupture of an intermediate portion of an anti-infective collection bag in an aqueous environment

In the figure: 1-a bag body; 2-a pocket mouth; 3-bag bottom; 4-heat sealing the bag bottom; 5-connecting structure A; 6-connecting structure B; 7-thin film narrow bands; 8-a bag opening binding belt; 9-a strip-shaped thin adhesive layer a; 10-a strip-shaped thin adhesive layer b;

Detailed Description

Example 1

Referring to fig. 1 to 6, this embodiment provides a medical anti-infection collecting bag with good sealing performance, and the structure of the anti-infection collecting bag includes: the bag mouth ribbon 8, the film bag body 1 and the film narrow band 7 are bonded together by using an adhesive to form a closed bag body.

The bag opening ribbon 8 and the film narrow band 7 are made of water-soluble PVA materials; the water-soluble PVA comprises, by weight, 60% of PVA, 5% of a high-molecular polymer, 5% of a filler, 10% of an auxiliary agent and the balance of water. Wherein the weight average molecular weight of PVA is 6 ten thousand; the high molecular polymer is polyvinylpyrrolidone; the filler is talcum powder; the auxiliary agent is a mixture of a plasticizer and a surfactant in a weight ratio of 20:1; the plasticizer is prepared by compounding sorbitol and glycerin in a weight ratio of 1:1; the surfactant is compounded by sodium dodecyl ether sulfosuccinate and polyoxyethylene stearyl ether in a weight ratio of 2:1.

The preparation method of the water-soluble PVA material comprises the following steps: (1) Putting a high molecular polymer, a filler, a plasticizer, a surfactant and water into a reaction kettle, and uniformly stirring and mixing; (2) Slowly adding PVA while stirring, and stirring at a rotation speed of 500r/min; and heating to 90 ℃ and then preserving heat for 1.5h; (3) stirring slowly until defoaming is completed; (4) And conveying the mixture to a bubble making device through a pipeline to form a glue solution containing uniform bubbles, casting the glue solution into a film, and drying the film to obtain the high-temperature-resistant foam.

The width of the bag mouth tie 8 is 20mm, the thickness is 30 mu m, and the length is consistent with that of the film bag body.

The film bag body 1 is made of water-insoluble material HDPE, and the HPDE is purchased from Thai Taidong engineering materials Co., ltd; the film bag 1 has a long side of 100cm, a short side of 95cm and a thickness of 40 μm.

The thin film narrow band 7 is parallel to the long edge of the thin film bag body and connected with the thin film bag body, and the length of the thin film narrow band is consistent with that of the thin film bag body; the width of the film strip 7 is 20mm.

The bonding structure of the film bag body 1 is a connecting structure A5, the film bag body is firstly folded 8cm towards the inner direction of the bag at the connecting structure A5, and the folded part is bonded with the film narrow band by using an adhesive to jointly form a closed bag body; the width of the folded part of the film bag body 1 close to the inner side of the bag body exceeds the edge of the film narrow band 7 by 3cm; the film strip 7 is positioned at the middle of the folded part of the film bag body 1.

The thickness of the strip-shaped thin adhesive layer a 9 at the connecting structure A5 is 20 mu m, the width is 3mm, and the length is consistent with that of the thin film bag body 1; the strip-shaped thin adhesive layer a 9 is positioned at the middle of the thin film strip 7.

The ribbon-shaped thin adhesive layer B10 at the connecting structure B6 is 20 μm thick; the length is 8cm, and the film bag body extends upwards along the bottom of the film bag body 1; the width of the inner side of the leaning bag body exceeds the width of the film narrow band 7 by 5mm, and the other side is connected with the strip-shaped film adhesive layer a 9 in a seamless way.

The adhesive is polyurethane hot melt adhesive. The polyurethane hot melt adhesive is PUR hot melt adhesive with model number 6015L manufactured by Guangzhou Bai Li Jia technology Co.

The film bag body 1 is made of two pieces of water-insoluble materials, and the connecting structure A5 and the connecting structure B6 are positioned on two sides of the film bag body. The bottom of the film bag body 1 is heat-sealed into a bag by a hot-melt heat-seal welding mode to form a heat-seal bag bottom 4.

The two sides of the film bag body 1 of the embodiment are folded inwards, and the film narrow band 7 close to the inner part of the bag body is covered by the folded part of the film bag body 1, so that the film narrow band 7 can be prevented from being directly contacted by wet matters in the bag when the collecting bag collects objects, and the strength of the bag body is ensured not to be damaged. When the collecting bag is in the washing machine, the bag generates tension due to the outward acting force of the internal wet matters, the connecting part of the bag body is further unfolded, water further erodes the water-soluble film narrow band 7, the film narrow band 7 contacted with water loses mechanical property after absorbing water and is gradually unfolded, and further the two layers of non-water-soluble film bag bodies 1 of the collecting bag are separated, the wet matters are discharged from cracks, and the using effect is achieved (as shown in figure 6).

Comparative example 1

The specific implementation of this example is the same as example 1, except that: the present embodiment does not include the connection structure B.

Comparative example 2

The specific implementation of this example is the same as example 1, except that: the edge of the adhesive layer B10 of the strip-shaped thin adhesive layer at the overlapping connection B6 does not exceed the edge of the thin film strip 7 near the inner side of the bag body.

Comparative example 3

The specific implementation of this example is the same as example 1, except that: the band-shaped thin adhesive layer a 9 at the connection structure A5 of this embodiment is 20 μm thick and 6mm wide.

Comparative example 4

The specific implementation of this example is the same as example 1, except that: the film pouch 1 of this embodiment is not folded but directly bonded to the film strip 7.

Comparative example 5

The specific implementation of this example is the same as example 1, except that: at the connecting structure A5 of the present embodiment, the edge of the folded portion of the film bag body 1 near the inside of the bag body coincides with the edge of the film narrow band 7.

Evaluation of Performance

The following tests were all carried out with reference to the test method of national standard GB/T42067-2022.

Tightness test

The opening of the bag is provided with an air inlet pipe and an air pressure meter, the opening of the bag is sealed, air is injected, and the pressure value change condition is observed. Inflation and inflation are carried out until the pressure value in the bag is 50Pa, and the pressure value in the bag can be kept to be not less than 20Pa after standing for 2 hours.

Examples	Tightness test
		Example 1	＞20pa
Comparative example 1	0pa
		Comparative example 2	0pa

Wet load bearing test

Step 1: weighing 7kg of dry cloth with the size of about 30cm multiplied by 30cm and the size of about bag; 4.9kg of dry fabric is firstly immersed into clean water at 23 ℃ completely, and then is taken out and excess liquid is wrung out after the dry fabric is completely wetted out, and the weight of the immersed wet fabric is three times that of the dry fabric before immersion.

Step 2: and taking the rest 2.1kg of dry fabric and thoroughly and uniformly mixing the dry fabric and the wet fabric obtained after the step 1.

Step 3: and (3) filling the mixed fabric in the step (2) into an infection bag, discharging redundant air in the bag, holding the position about 20cm below a bag opening, lifting the bag, hanging the bag in an environment with the temperature of 25 ℃ and the relative humidity of 50% for 16 hours if the bag is not broken, vertically shaking for 3 times with the frequency of about 70 times/min for 20cm up and down strokes, and obtaining the qualified bag body without water seepage and breakage, wherein the number of test samples is 3.

Examples	Wet load bearing test
		Example 1	Qualified product
Comparative example 4	Seepage and damage

Washing test:

the collecting bags prepared by the examples and the comparative examples are subjected to washing test, the collecting bags are fully filled with medical gloves for 100 times in each example, the washing is carried out in a 250W power washing machine for 10 minutes, the washing capacity is 10 kg, the condition of the content in the collecting bag in the detergent is observed for 10 minutes, if the content is completely released by the collecting bag, the content is marked as being qualified, part of the content is still reserved and marked as being unqualified, the number of times of unqualified is less than or equal to 10 times and is marked as A, and the number of times of unqualified is greater than 10 times and is marked as B.

TABLE 1

Examples	Washing test
		Example 1	A
Comparative example 1	A
		Comparative example 2	A
Comparative example 3	B
		Comparative example 4	B
Comparative example 5	A

According to the embodiment and the comparative example, the novel anti-infection collecting bag provided by the invention has good anti-infection, sealing and preserving performances, greatly reduces the risks of heat transfer and virus spreading of medical supplies, is suitable for popularization in the medical and washing fields, and has wide development prospects.

Claims

1. The utility model provides a medical anti-infection collection bag that leakproofness is good, its characterized in that, collection bag's structure includes: 1) A bag mouth binding belt; 2) A film bag body; the film bag body is adhered by using an adhesion structure to form a closed bag body.

2. The sealed medical anti-infective collection bag of claim 1, wherein the bonded structure is detachable in water.

3. The sealed medical anti-infective collection bag of claim 2, wherein the bonded structure further comprises a thin film strip; the bag opening ribbon and the film narrow band are made of water-soluble materials; the water-soluble material is at least one of PVA, water-soluble chitosan, polyoxyethylene ether, polyvinylpyrrolidone, water-soluble starch film, sodium carboxymethyl cellulose, sodium polyacrylate, crosslinked povidone, pullulan, hydroxypropyl methylcellulose and hydroxypropyl cellulose.

4. The sealed medical anti-infective collecting bag of claim 1, wherein the film bag body is at least one quadrilateral piece of water insoluble material; the water-insoluble material is at least one selected from PE, PP, PET, PA, PVC film, PBAT, PBS, PLA, PHA, PPC and PCL.

5. The medical anti-infection collecting bag with good sealing performance according to claim 3, wherein the bonding structure of the film bag body is a connecting structure A, the film bag body is firstly folded for 5cm to 20cm towards the inner direction of the bag at the connecting structure A, and the folded part is bonded with the film narrow band by using an adhesive to jointly form a closed bag body.

6. The medical anti-infection collecting bag with good sealing performance according to claim 5, wherein the adhesive at the connecting structure A is a strip-shaped thin adhesive layer a with the width of 1-200 mm; the length of the strip-shaped thin adhesive layer a is consistent with that of the thin film bag body; the width of the strip-shaped thin adhesive layer a does not exceed the width range of the thin film narrow band.

7. The medical anti-infection collecting bag with good sealing performance according to claim 5, wherein the film bag body is two pieces of water-insoluble films, the connecting structures A are positioned on two sides of the film bag body, and the bottom of the film bag body is heat-sealed into a bag in a hot-melt heat-sealing welding mode.

8. The sealed medical anti-infective collecting bag of claim 5, wherein the bonding structure of the film bag body further comprises 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 upwards along the bottom of the thin film bag body and is at least 1mm higher than the position of the heat sealing line at the bottom of the bag.

9. The sealed medical anti-infection collecting bag according to claim 8, wherein the edge of the adhesive layer on the inner side of the bag body of the strip-shaped thin adhesive layer b exceeds the edge of the thin film strip on the inner side of the bag body, and the other side of the strip-shaped thin adhesive layer b is connected with the strip-shaped thin adhesive layer a in a seamless manner.

10. Use of an anti-infective collecting bag according to any one of claims 1 to 9, characterized in that: the collecting bag is applied to airtight storage, airtight transportation and airtight washing and throwing.