Preparation process of antibacterial diapers

Abstract

The present invention relates to a preparation process for antibacterial diapers. The preparation process for antibacterial diapers comprises a diaper body, a diaper assembly, two groups of front elastic bands, two groups of rear elastic bands, two groups of sub-adhesive bands and two groups of mother adhesive bands, wherein the diaper assembly is bonded to the inner side of the diaper body, the two groups of front elastic bands are symmetrically bonded to the left and right parts of the front side of the diaper body, the two groups of rear elastic bands are symmetrically bonded to the left and right parts of the rear side of the diaper body, the two groups of sub-adhesive bands are respectively bonded to the outer ends of the two groups of rear elastic bands, and the two groups of mother adhesive bands are respectively bonded to the outer ends of the two groups of front elastic bands; the diaper assembly comprises an antibacterial layer, and the antibacterial layer is prepared by impregnating an antibacterial finishing liquid; and the preparation process for the antibacterial finishing liquid comprises the steps of (1) preparing a composite plant essential oil deodorant, (2) preparing a tea polyphenol extract, (3) preparing a spearmint extract and (4) preparing an antibacterial finishing liquid. The antibacterial diaper prepared by the present invention has good antibacterial and anti-odor effects.

Description

Technical Field

[0001] The invention relates to a preparation process of antibacterial diapers. Background Art

[0002] Diapers are a general term for disposable diapers, wet diapers, and pull-up pants. Elderly people who need to stay in bed due to illness often rely on diapers. However, existing diapers are not secure enough to wear, and their antibacterial properties need improvement.

[0003] For example, CN108635111A (2018-10-12) discloses a diaper for the elderly, comprising a diaper, characterized in that an upper breathable net is installed above the diaper, an elastic surface is installed above the upper breathable net, a first sticky surface is installed at both ends of the elastic surface, a lower breathable net is installed below the diaper, a first facing is installed at both ends of the lower breathable net, a diaper is installed inside the diaper, connecting belts are installed on both sides of the diaper, a wrapping surface is installed below the connecting belt, a ventilation port is installed on the outside of the wrapping surface, an elastic belt is installed on the outside of the ventilation port, and a multi-layer filter protection structure is arranged in the diaper; however, its antibacterial, anti-leakage and anti-odor properties still need to be improved. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems of poor antibacterial effect and weak anti-odor performance in the preparation process of antibacterial diapers, and to provide a preparation process for antibacterial diapers with good antibacterial and anti-odor effects.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A process for preparing an antibacterial diaper, wherein the antibacterial diaper structure includes a diaper body, a diaper assembly, two sets of front elastic bands, two sets of back elastic bands, two sets of sub-adhesive bands, and two sets of mother adhesive bands. The diaper assembly is bonded to the inside of the diaper body, the two sets of front elastic bands are symmetrically bonded to the left and right parts of the front side of the diaper body, the two sets of back elastic bands are symmetrically bonded to the left and right parts of the back side of the diaper body, the two sets of back elastic bands are positioned correspondingly to the two sets of front elastic bands, the two sets of sub-adhesive bands are respectively bonded to the outer ends of the two sets of back elastic bands, and the two sets of mother adhesive bands are respectively bonded to the outer ends of the two sets of front elastic bands. The diaper assembly includes an antibacterial layer, and the antibacterial layer is prepared by impregnating an antibacterial finishing liquid.

[0007] The process for preparing the antibacterial finishing liquid comprises the steps of (1) preparing a composite plant essential oil deodorant, (2) preparing a tea polyphenol extract, (3) preparing a spearmint extract, and (4) preparing the antibacterial finishing liquid.

[0008] The present invention bends and wraps the diaper body around the usage part, so that the two groups of front elastic bands are located on the front side of the diaper body, and the two groups of rear elastic bands are located on the rear side of the diaper body. The two groups of rear elastic bands are then pulled forward to overlap with the two groups of front elastic bands. The two groups of sub-adhesive bands are then bonded to the appropriate positions of the two groups of main adhesive bands according to the waist circumference of the elderly. The antibacterial layer adopts a special antibacterial and anti-odor material, which has antibacterial and anti-odor effects. In addition, the sub-adhesive bands are bonded to the main adhesive bands, which improves the wearing reliability of the diaper body.

[0009] Preferably, the preparation process of the antibacterial finishing liquid specifically comprises the following steps:

[0010] Step (1) Preparation of composite plant essential oil deodorant:

[0011] The three plant essential oils are mixed in order according to the volume ratio (cinnamaldehyde: eugenol: menthol) in increasing amounts, and stirred while adding to make a composite plant essential oil deodorant; after the mixture is evenly mixed, the mixture is filtered, and the filtrate is mixed with diatomaceous earth, and after mixing well, it is sealed and placed for full absorption to make a composite plant essential oil deodorant for later use;

[0012] Step (2) Preparation of tea polyphenols extract:

[0013] Green tea → hot water extraction → filter to remove residue → hot water extraction again → combine the two filtrates → centrifuge → take the supernatant

[0014] Step (3) Preparation of spearmint extract:

[0015] A certain amount of dried spearmint whole herb is weighed and crushed, soaked in a certain volume of water, decocted for multiple times, the medicinal liquids are combined and filtered, a portion is precipitated with a multiple amount of ethanol, the boiled medicinal residue is dried, wrapped with filter paper, placed in a Soxhlet extractor, soaked overnight with ethanol, subjected to continuous reflux extraction, the alcohol extract is collected and recovered under reduced pressure, extracted with petroleum ether, concentrated under reduced pressure to obtain an extract, dissolved with appropriate amounts of methanol and Tween 80, then fixed to a certain concentration with distilled water, and the pH value is adjusted to obtain the spearmint extract.

[0016] Tea polyphenols, also known as tea tannins or tea tannins, or TP (tea polyphenols), are a mixture of polyhydroxyphenols and their derivatives extracted from the natural tea plant. Tea polyphenols are most abundant in green tea, comprising 15% to 30% of the tea's dry weight. Therefore, green tea is often used as the raw material for their extraction and production. Tea polyphenols have anti-inflammatory properties and broad-spectrum antibacterial properties, exhibiting strong antibacterial potency and selectivity, capable of inhibiting the growth of oral bacteria, Helicobacter pylori, Escherichia coli, and other pathogens to a certain extent. Catechins can significantly inhibit the growth of influenza viruses and HIV. Tea polyphenols possess numerous physiological functions, including antioxidant, anti-cancer, radiation protection, anti-aging, cardiovascular disease prevention, and blood sugar and lipid lowering, making them a novel natural antioxidant. Spearmint is also known as green mint (Guangxi and Guangdong), fragrant flower vegetable (Guangdong and Yunnan), wild mint (Yunnan and Guizhou), green mint, fish coriander, dog meat incense, and blood coriander. At lower concentrations, spearmint oil can completely inhibit the growth of Aspergillus flavus, Aspergillus parasiticus, and rice seedling pathogen and the production of mycotoxins.

[0017] The composite deodorant of the present invention overcomes the shortcomings of single deodorant and has the advantages of good deodorizing effect, broad antibacterial spectrum, small addition amount, and low requirements on moisture and acidity.

[0018] Step (4) Preparation of antibacterial finishing liquid:

[0019] A certain amount of composite plant essential oil deodorant, tea polyphenol extract and spearmint extract were weighed, added into distilled water and fully ultrasonically dispersed to obtain an antibacterial finishing liquid of a certain concentration.

[0020] Preferably, the method for preparing the composite plant essential oil deodorant in step (1) comprises:

[0021] Prepare a compound (cinnamaldehyde: eugenol: menthol) in a volume ratio of 1:2:3~3:4:5, and mix the three plant essential oils in order according to the ratio from small to large. Stir while adding and mix evenly. After mixing evenly, filter with a 0.22μm microporous filter, take 50~70ml of the filtrate and mix it with 50~70g of diatomaceous earth. After mixing well, seal and place it for 30~40 minutes to allow it to fully absorb, to make a composite plant essential oil deodorant, set aside.

[0022] Among them, the antibacterial effects of plant essential oils mainly include: destroying the mycelial morphology and cell wall structure, affecting the normal function of the cell membrane; destroying the phospholipid bilayer, affecting the stability of the lipid layer; inhibiting enzyme activity, affecting energy metabolism and the reductase system.

[0023] Preferably, the method for preparing the tea polyphenol extract in step (2) comprises:

[0024] Pretreatment of tea leaves: remove dust from the green tea leaves, crush them, pass them through a 60-80 mesh sieve to obtain green tea powder, dry them in a constant temperature forced air drying oven at 80-90°C, and store them in a refrigerator for later use.

[0025] Among them, tea pretreatment, in order to make the tea polyphenols in the tea quickly and fully contact with the solvent and improve the extraction rate, according to the extraction principle, destroying the plant cell wall helps to increase the extraction rate. However, once the cell wall is deeply damaged, some large molecular weight substances in the cell will also be extracted, which increases the impurities in the extract and brings difficulties to subsequent purification and other operations.

[0026] Extraction of tea polyphenols: weigh 5-10g of crushed tea sample passed through a 60-80 mesh sieve into a flask, add 80-100ml of double-distilled water, adjust the pH to 5-6, put it in a water bath at 60-80℃ for shaking extraction, soak for 40-60min, filter with gauze to remove the residue, and set aside the filtrate. Soak the obtained residue with hot water again for 40-60min, filter with gauze to remove the residue again, combine the two filtrates, and finally centrifuge at 800-1000r / min, collect the supernatant filtrate to obtain the extract rich in tea polyphenols.

[0027] Among them, green tea is an unfermented tea that retains the natural substances of fresh leaves and contains more nutrients such as tea polyphenols, catechins and vitamins.

[0028] Preferably, double distilled water is used as the extraction solvent. Water extraction is an economical and efficient extraction method, which is not only low in cost but also mild in conditions, and is conducive to the stable existence of active ingredients.

[0029] Preferably, the method for preparing the spearmint extract in step (3) comprises:

[0030] Weigh 10-20g of dried spearmint whole herb, grind it, soak it in 10-15 times its volume of water for 2h, decoct it 3-4 times, each time for 30-40min, combine the medicinal solutions and filter them, precipitate a portion with 3-5 times the volume of 95% ethanol for 24h, filter the supernatant, recover the volume to 1-4g / ml under reduced pressure, adjust the pH to 6.8-7.2, and obtain the filtrate for later use; dry the boiled medicinal residue, wrap it with filter paper, put it into a Soxhlet extractor, add 8-12 times the volume of 75% ethanol and soak it overnight, continuously reflux extract for 6-8h, collect the alcohol extract and recover it under reduced pressure until a black precipitate appears, extract it with petroleum ether three times, recover it under reduced pressure and concentrate it to obtain an extract, dissolve it with 30-40ml of methanol and Tween 80, then add distilled water to make the volume to 1-4g / ml, adjust the pH to 6.8-7.2, mix the two filtrates to obtain the spearmint extract.

[0031] The antibacterial effect of the alcohol-precipitated extract is much better than that of the extract without alcohol precipitation because, when the aqueous extract of Chinese herbal medicine is concentrated to a high crude drug concentration, it often becomes viscous and has a complex composition. In addition to the active ingredients, it also contains some water-soluble impurities such as protein, starch, and polysaccharides. These non-antibacterial components can affect the antibacterial activity and even enhance bacterial resistance.

[0032] Preferably, in step (4), the antibacterial finishing liquid is prepared:

[0033] 10-15 g of a composite plant essential oil deodorant, tea polyphenol extract, and spearmint extract were weighed in a ratio of 1:1:1-3:3:3, and 80 ml of distilled water were added and fully ultrasonically dispersed to obtain an antibacterial finishing liquid.

[0034] Preferably, the diaper assembly includes an antibacterial layer, a breathable layer, a water-absorbing layer and an anti-permeation layer, the bottom end of the antibacterial layer is bonded to the top end of the breathable layer, the bottom end of the breathable layer is bonded to the top end of the water-absorbing layer, and the bottom end of the water-absorbing layer is bonded to the top end of the anti-permeation layer.

[0035] Preferably, the antibacterial diaper structure also includes a front heat dissipation mesh and a rear heat dissipation mesh. The front and rear parts of the diaper body are connected and provided with openings. The front heat dissipation mesh is sewn at the front opening of the diaper body, and the rear heat dissipation mesh is sewn at the rear opening of the diaper body.

[0036] Preferably, the antibacterial diaper structure further comprises two sets of adhesive tapes, which are respectively installed on the front and back sides of the diaper body.

[0037] Preferably, the antibacterial diaper structure further comprises two sets of soft edges, which are respectively mounted on the left and right ends of the diaper body.

[0038] Preferably, the breathable layer is non-woven fabric.

[0039] Preferably, the water-absorbing layer is water-absorbing cotton.

[0040] Preferably, the anti-permeation layer is a polyethylene film.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1. The present invention bends and wraps the diaper body around the wearing part, so that the two sets of front elastic bands are located on the front side of the diaper body, and the two sets of rear elastic bands are located on the rear side of the diaper body. The two sets of rear elastic bands are then pulled forward to overlap with the two sets of front elastic bands. The two sets of sub-adhesive bands are then bonded to the two sets of main adhesive bands at appropriate positions according to the waist circumference of the elderly. The antibacterial layer is made of a special antibacterial and anti-odor material, which has antibacterial and anti-odor effects. In addition, the sub-adhesive bands are bonded to the main adhesive bands, which improves the wearing security of the diaper body.

[0043] 2. The composite deodorant of the present invention overcomes the shortcomings of single-type deodorants and has the advantages of good deodorizing effect, broad antibacterial spectrum, small addition amount, and low requirements for moisture and acidity. The extraction method of tea polyphenols and the preparation method of spearmint extract of the present invention are conducive to the stable presence of the active ingredients of the antibacterial finishing liquid of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a front plan view of the unfolded antibacterial diaper of the present invention;

[0045] Figure 2 This is a top view of the back of the unfolded antibacterial diaper of the present invention;

[0046] Figure 3 yes Figure 1 A schematic diagram of the cross-section of the enlarged structure of the diaper component;

[0047] Figure 4 This is a process flow chart for preparing an antibacterial diaper according to the present invention;

[0048] Markings in the attached figure: 1. Diaper body; 2. Diaper component; 3. Antibacterial layer; 4. Breathable layer; 5. Water-absorbent layer; 6. Anti-permeability layer; 7. Front elastic band; 8. Back elastic band; 9. Child adhesive tape; 10. Mother adhesive tape; 11. Front heat dissipation mesh; 12. Back heat dissipation mesh; 13. Adhesion; 14. Soft edge. DETAILED DESCRIPTION

[0049] Example 1

[0050] like Figures 1 to 3As shown, an antibacterial diaper structure of the present invention includes a diaper body 1, a diaper component 2, two groups of front elastic bands 7, two groups of rear elastic bands 8, two groups of sub-adhesive bands 9 and two groups of mother adhesive bands 10. The diaper component 2 is bonded to the inside of the diaper body 1. The diaper component 2 includes an antibacterial layer 3, a breathable layer 4, a water-absorbing layer 5 and an anti-permeability layer 6. The bottom end of the antibacterial layer 3 is bonded to the top of the breathable layer 4, the bottom end of the breathable layer 4 is bonded to the top of the water-absorbing layer 5, and the bottom end of the water-absorbing layer 5 is bonded to the top of the anti-permeability layer 6. The two groups of front elastic bands 7 are symmetrically bonded to the left and right sides of the front side of the diaper body 1, and the two groups of rear elastic bands 8 are symmetrically bonded to the left and right sides of the rear side of the diaper body 1. The two groups of rear elastic bands 8 are bonded to the two groups of front elastic bands. 7 correspond to the positions, the two groups of sub-adhesive tapes 9 are respectively adhered to the outer ends of the two groups of rear elastic tapes 8, and the two groups of mother adhesive tapes 10 are respectively adhered to the outer ends of the two groups of front elastic tapes 7; the diaper body 1 is bent and wrapped around the use part, so that the two groups of front elastic tapes 7 are located on the front side of the diaper body 1, and the two groups of rear elastic tapes 8 are located on the rear side of the diaper body 1, and then the two groups of rear elastic tapes 8 are pulled forward to overlap the two groups of rear elastic tapes 8 with the two groups of front elastic tapes 7, and then the two groups of sub-adhesive tapes 9 are adhered to the appropriate positions of the two groups of mother adhesive tapes 10 according to the waist circumference of the elderly. The antibacterial layer 3 is made of antibacterial material and has an antibacterial effect. In addition, the sub-adhesive tapes 9 are adhered to the mother adhesive tapes 10, which improves the wearing reliability of the diaper body 1.

[0051] The antibacterial diaper structure of the present invention further includes a front heat dissipation mesh 11 and a rear heat dissipation mesh 12. The front and rear portions of the diaper body 1 are both connected and provided with openings. The front heat dissipation mesh 11 is sewn to the front opening of the diaper body 1, and the rear heat dissipation mesh 12 is sewn to the rear opening of the diaper body 1. By providing the front heat dissipation mesh 11 and the rear heat dissipation mesh 12, the breathability of the diaper body 1 can be improved, thereby improving wearing comfort. The antibacterial diaper structure further includes two sets of adhesives 13 and two sets of soft edges 14. The two sets of adhesives 13 are respectively installed on the front and rear sides of the diaper body 1. By providing the adhesives 13, the diaper body 1 can be made to fit more closely to the skin, thereby improving its wearing effect. The two sets of soft edges 14 are respectively installed on the left and right ends of the diaper body 1. By providing the soft edges 14, the comfort of wearing the diaper body 1 can be improved.

[0052] The breathable layer 4 is a non-woven fabric; non-woven fabrics are moisture-proof, breathable, flexible, lightweight, flame-retardant, non-toxic, odorless, inexpensive, and recyclable, with good breathability. The water-absorbing layer 5 is absorbent cotton, which has excellent water absorption. The anti-permeability layer 6 is a polyethylene film; polyethylene film is moisture-proof and has low moisture permeability.

[0053] The antibacterial layer 3 is prepared by impregnation with an antibacterial finishing liquid; the preparation process of the antibacterial finishing liquid includes:

[0054] Step (1) Preparation of composite plant essential oil deodorant:

[0055] Prepare a compound (cinnamaldehyde: eugenol: menthol) in a volume ratio of 1:2:3, and mix the three plant essential oils in order according to the ratio from small to large. Stir while adding and mix evenly. After mixing evenly, filter with a 0.22μm microporous filter, take 50ml of the filtrate and mix it with 50g of diatomaceous earth. After mixing well, seal and place it for 30 minutes to allow it to fully absorb, to make a composite plant essential oil deodorizer, set aside.

[0056] Step (2) Preparation of tea polyphenols extract:

[0057] Green tea leaves are pulverized and passed through a 60-mesh sieve to obtain green tea powder, which is then dried in a constant-temperature forced air drying oven at 80°C and stored in a refrigerator for later use. 5 g of the tea sample that has passed through a 60-mesh sieve is weighed into a flask, 80 ml of double-distilled water is added, the pH is adjusted to 5, and the mixture is shaken and extracted in a water bath at 60°C for 40 minutes. The residue is filtered through gauze to obtain a filtrate for later use. The resulting residue is again extracted with hot water for 40 minutes, filtered through gauze to remove the residue again, and the two filtrates are combined. Finally, the mixture is centrifuged at 800 r / min, and the supernatant filtrate is collected to obtain an extract rich in tea polyphenols.

[0058] Step (3) Preparation of spearmint extract:

[0059] 10 g of dried spearmint herb was weighed and crushed, soaked in 10 times its volume of water for 2 hours, decocted three times, each time for 30 minutes, the medicinal liquids were combined and filtered, a portion was precipitated with 3 times the volume of 95% ethanol for 24 hours, the supernatant was filtered, and the volume was recovered to 1 g / ml under reduced pressure. The pH value was adjusted to 6.8 to obtain a filtrate for later use; the boiled medicinal residue was dried, wrapped with filter paper, placed in a Soxhlet extractor, soaked overnight in 8 times 75% ethanol, and continuously refluxed for 6 hours. The alcohol extract was collected and recovered under reduced pressure until a black precipitate was about to appear, extracted with petroleum ether three times, and concentrated under reduced pressure to obtain an extract, which was dissolved with 30 ml of methanol and Tween 80, then fixed to 1 g / ml with distilled water, and the pH value was adjusted to 6.8. The two filtrates were mixed to obtain a spearmint extract.

[0060] Step (4) Preparation of antibacterial finishing liquid:

[0061] 10 g of a composite plant essential oil deodorant, tea polyphenol extract, and spearmint extract were weighed in a ratio of 1:1:1, and 80 ml of distilled water were added and fully ultrasonically dispersed to obtain an antibacterial finishing liquid.

[0062] Example 2

[0063] Step (1) Preparation of composite plant essential oil deodorant:

[0064] Prepare a compound (cinnamaldehyde: eugenol: menthol) in a volume ratio of 1:2:4, and mix the three plant essential oils in order according to the ratio from small to large. Stir while adding and mix evenly. After mixing evenly, filter with a 0.22μm microporous filter, take 54ml of the filtrate and mix it with 54g of diatomaceous earth. After mixing well, seal and place it for 32 minutes to allow it to fully absorb, to make a composite plant essential oil deodorizer, set aside.

[0065] Step (2) Preparation of tea polyphenols extract:

[0066] Green tea leaves were dusted and crushed, passed through a 60-mesh sieve to obtain green tea powder, which was then dried in a constant-temperature forced air drying oven at 82°C and stored in a refrigerator for later use. 6 g of the tea sample that had passed through a 60-mesh sieve was weighed into a flask, 85 ml of double-distilled water was added, the pH was adjusted to 5.2, and the mixture was shaken and extracted in a water bath at 65°C for 45 minutes. The residue was filtered through gauze to obtain a filtrate for later use. The residue was again extracted with hot water for 45 minutes, filtered through gauze to remove the residue again, and the two filtrates were combined. Finally, the mixture was centrifuged at 800 r / min, and the supernatant filtrate was collected to obtain an extract rich in tea polyphenols.

[0067] Step (3) Preparation of spearmint extract:

[0068] 12 g of dried spearmint herb was weighed and crushed, soaked in 11 times its volume of water for 2 hours, decocted three times, each time for 32 minutes, the medicinal liquids were combined and filtered, a portion was precipitated with 3 times the volume of 95% ethanol for 24 hours, the supernatant was filtered, and the volume was recovered to 1 g / ml under reduced pressure. The pH value was adjusted to 6.8 to obtain a filtrate for later use; the boiled medicinal residue was dried, wrapped with filter paper, placed in a Soxhlet extractor, and soaked overnight in 8 times 75% ethanol. Reflux extraction was carried out continuously for 6 hours, and the alcohol extract was collected and recovered under reduced pressure until a black precipitate was about to appear. It was extracted with petroleum ether three times, recovered under reduced pressure and concentrated to obtain an extract, dissolved with 32 ml of methanol and Tween 80, and then fixed to 1 g / ml with distilled water. The pH value was adjusted to 6.8, and the two filtrates were mixed to obtain a spearmint extract.

[0069] Step (4) Preparation of antibacterial finishing liquid:

[0070] 11 g of a composite plant essential oil deodorant, tea polyphenol extract, and spearmint extract were weighed in a ratio of 1:2:3, and 80 ml of distilled water were added and fully ultrasonically dispersed to obtain an antibacterial finishing liquid.

[0071] Example 3

[0072] Step (1) Preparation of composite plant essential oil deodorant:

[0073] Prepare a compound (cinnamaldehyde: eugenol: menthol) in a volume ratio of 1:3:3, and mix the three plant essential oils in order according to the ratio from small to large. Stir while adding and mix evenly. After mixing evenly, filter with a 0.22μm microporous filter, take 58ml of the filtrate and mix it with 58g of diatomaceous earth. After mixing well, seal and place it for 32 minutes to allow it to fully absorb, to make a composite plant essential oil deodorizer, set aside.

[0074] Step (2) Preparation of tea polyphenols extract:

[0075] Green tea leaves are dusted and crushed, passed through a 60-mesh sieve to obtain green tea powder, which is then dried in a constant-temperature forced air drying oven at 84°C and stored in a refrigerator for later use. 5-10 g of the tea sample that has passed through a 60-mesh sieve is weighed into a flask, 88 ml of double-distilled water is added, the pH is adjusted to 5.4, and the mixture is shaken and extracted in a water bath at 68°C for 48 minutes. The residue is filtered through gauze to obtain a filtrate for later use. The resulting residue is then extracted again with hot water for 48 minutes, filtered again through gauze to remove the residue, and the two filtrates are combined. Finally, the mixture is centrifuged at 850 r / min, and the supernatant filtrate is collected to obtain an extract rich in tea polyphenols.

[0076] Step (3) Preparation of spearmint extract:

[0077] 14 g of dried spearmint herb was weighed and crushed, soaked in 12 times its volume of water for 2 hours, decocted three times, each time for 34 minutes, the medicinal liquids were combined and filtered, a portion was precipitated with 3 times the volume of 95% ethanol for 24 hours, the supernatant was filtered, and the volume was recovered to 2 g / ml under reduced pressure. The pH value was adjusted to 6.9 to obtain a filtrate for later use; the boiled medicinal residue was dried, wrapped with filter paper, placed in a Soxhlet extractor, soaked overnight in 9 times 75% ethanol, and continuously refluxed for 6 hours. The alcohol extract was collected and recovered under reduced pressure until a black precipitate was about to appear, extracted with petroleum ether three times, and concentrated under reduced pressure to obtain an extract, which was dissolved with 34 ml of methanol and Tween 80, then fixed to 2 g / ml with distilled water, and the pH value was adjusted to 6.9. The two filtrates were mixed to obtain a spearmint extract.

[0078] Step (4) Preparation of antibacterial finishing liquid:

[0079] 12 g of a composite plant essential oil deodorant, tea polyphenol extract, and spearmint extract were weighed in a ratio of 1:2:3, and 80 ml of distilled water were added and fully ultrasonically dispersed to obtain an antibacterial finishing liquid.

[0080] Example 4

[0081] Step (1) Preparation of composite plant essential oil deodorant:

[0082] Prepare a compound (cinnamaldehyde: eugenol: menthol) in a volume ratio of 1:3:4, and mix the three plant essential oils in order according to the ratio from small to large. Stir while adding and mix evenly. After mixing evenly, filter with a 0.22μm microporous filter, take 60ml of the filtrate and mix it with 60g of diatomaceous earth. After mixing well, seal and place it for 35 minutes to allow it to fully absorb, to make a composite plant essential oil deodorizer, set aside.

[0083] Step (2) Preparation of tea polyphenols extract:

[0084] Green tea leaves were dusted and crushed, passed through an 80-mesh sieve to obtain green tea powder, which was then dried in a constant-temperature forced air drying oven at 85°C and stored in a refrigerator for later use. 7 g of the tea sample that had passed the 80-mesh sieve was weighed into a flask, 90 ml of double-distilled water was added, the pH was adjusted to 5.6, and the mixture was shaken and extracted in a water bath at 70°C for 50 minutes. The residue was filtered through gauze to obtain a filtrate for later use. The residue was again extracted with hot water for 50 minutes, filtered through gauze to remove the residue again, and the two filtrates were combined. Finally, the mixture was centrifuged at 880 r / min, and the supernatant filtrate was collected to obtain an extract rich in tea polyphenols.

[0085] Step (3) Preparation of spearmint extract:

[0086] Weigh 15g of dried spearmint whole herb, grind it, soak it in 13 times its volume of water for 2h, decoct it 4 times, each time for 35min, combine the medicinal liquids and filter them, precipitate a portion with 4 times the volume of 95% ethanol for 24h, filter the supernatant, recover it under reduced pressure to 2g / ml, adjust the pH value to 7.0, and obtain the filtrate for later use; dry the boiled medicinal residue, wrap it with filter paper, put it into a Soxhlet extractor, add 9 times 75% ethanol and soak it overnight, continuously reflux extract for 7h, collect the alcohol extract and recover it under reduced pressure until a black precipitate appears, extract it with petroleum ether 3 times, recover it under reduced pressure and concentrate it to obtain an extract, dissolve it with 30-40ml of methanol and Tween 80, then add distilled water to make up to 2g / ml, adjust the pH value to 7.0, mix the two filtrates to obtain the spearmint extract.

[0087] Step (4) Preparation of antibacterial finishing liquid:

[0088] 13 g of a composite plant essential oil deodorant, tea polyphenol extract, and spearmint extract were weighed in a ratio of 2:2:1, and 80 ml of distilled water were added and fully ultrasonically dispersed to obtain an antibacterial finishing liquid.

[0089] Example 5

[0090] Step (1) Preparation of composite plant essential oil deodorant:

[0091] Prepare a compound (cinnamaldehyde: eugenol: menthol) in a volume ratio of 2:2:3, and mix the three plant essential oils in order according to the ratio from small to large. Stir while adding and mix evenly. After mixing evenly, filter with a 0.22μm microporous filter, take 64ml of the filtrate and mix it with 64g of diatomaceous earth. After mixing well, seal and place it for 36 minutes to allow it to fully absorb, to make a composite plant essential oil deodorant, set aside.

[0092] Step (2) Preparation of tea polyphenols extract:

[0093] Green tea leaves were dusted and crushed, passed through an 80-mesh sieve to obtain green tea powder, which was then dried in a constant-temperature forced air drying oven at 88°C and stored in a refrigerator for later use. 8 g of the tea sample that had passed the 80-mesh sieve was weighed into a flask, 95 ml of double-distilled water was added, the pH was adjusted to 5.8, and the mixture was shaken and extracted in a water bath at 75°C for 55 minutes. The residue was filtered through gauze to obtain a filtrate for later use. The residue was again extracted with hot water for 55 minutes, filtered through gauze to remove the residue again, and the two filtrates were combined. Finally, the mixture was centrifuged at 900 r / min, and the supernatant filtrate was collected to obtain an extract rich in tea polyphenols.

[0094] Step (3) Preparation of spearmint extract:

[0095] 15 g of dried spearmint herb was weighed and crushed, soaked in 14 times its volume of water for 2 hours, decocted four times, each time for 35 minutes, the medicinal liquids were combined and filtered, a portion was precipitated with 4 times the volume of 95% ethanol for 24 hours, the supernatant was filtered, and the volume was recovered to 3 g / ml under reduced pressure. The pH value was adjusted to 7.1 to obtain a filtrate for later use; the boiled medicinal residue was dried, wrapped with filter paper, placed in a Soxhlet extractor, and soaked overnight in 11 times 75% ethanol. Reflux extraction was carried out continuously for 8 hours, and the alcohol extract was collected and recovered under reduced pressure until a black precipitate was about to appear. It was extracted with petroleum ether three times, recovered under reduced pressure and concentrated to obtain an extract, which was dissolved with 38 ml of methanol and Tween 80, and then distilled water was added to make the volume to 3 g / ml. The pH value was adjusted to 7.1, and the two filtrates were mixed to obtain a spearmint extract.

[0096] Step (4) Preparation of antibacterial finishing liquid:

[0097] 14 g of a composite plant essential oil deodorant, tea polyphenol extract, and spearmint extract were weighed in a ratio of 2:2:3, and 80 ml of distilled water were added and fully ultrasonically dispersed to obtain an antibacterial finishing liquid.

[0098] Example 6

[0099] Step (1) Preparation of composite plant essential oil deodorant:

[0100] Prepare a compound (cinnamaldehyde: eugenol: menthol) in a volume ratio of 3:4:5, and mix the three plant essential oils in order according to the ratio from small to large, stirring while adding, and mix evenly. After mixing evenly, filter with a 0.22μm microporous filter, take 70ml of the filtrate and mix it with 70g of diatomaceous earth. After mixing well, seal and place it for 40 minutes to allow it to fully absorb, to make a composite plant essential oil deodorant, set aside.

[0101] Step (2) Preparation of tea polyphenols extract:

[0102] Green tea leaves are dusted and crushed, passed through an 80-mesh sieve to obtain green tea powder, which is then dried in a constant-temperature forced air drying oven at 90°C and stored in a refrigerator for later use. 10 g of a tea sample that has been crushed and passed through a 60-80 mesh sieve is weighed into a flask, 100 ml of double-distilled water is added, the pH is adjusted to 6, and the mixture is shaken and extracted in a water bath at 80°C for 60 minutes. The residue is filtered through gauze to remove the residue, and the filtrate is used for later use. The resulting residue is again extracted with hot water for 60 minutes, filtered through gauze to remove the residue again, and the two filtrates are combined. Finally, the mixture is centrifuged at 1000 r / min, and the supernatant filtrate is collected to obtain an extract rich in tea polyphenols.

[0103] Step (3) Preparation of spearmint extract:

[0104] Weigh 20g of dried spearmint whole herb, grind it, soak it in 15 times its volume of water for 2h, decoct it 4 times, each time for 40min, combine the medicinal liquids and filter them, precipitate a portion with 5 times the volume of 95% ethanol for 24h, filter the supernatant, recover it under reduced pressure to 4g / ml, adjust the pH value to 7.2, and obtain the filtrate for later use; dry the boiled medicinal residue, wrap it with filter paper, put it into a Soxhlet extractor, add 12 times 75% ethanol and soak it overnight, continuously reflux extract for 8h, collect the alcohol extract and recover it under reduced pressure until a black precipitate is about to appear, extract it with petroleum ether 3 times, recover it under reduced pressure and concentrate it to obtain an extract, dissolve it with 30-40ml of methanol and Tween 80, then add distilled water to make up to 4g / ml, adjust the pH value to 7.2, mix the two filtrates to obtain the spearmint extract.

[0105] Step (4) Preparation of antibacterial finishing liquid:

[0106] 15 g of a composite plant essential oil deodorant, tea polyphenol extract, and spearmint extract were weighed in a ratio of 3:3:3, and 80 ml of distilled water were added and fully ultrasonically dispersed to obtain an antibacterial finishing liquid.

[0107] Comparative Example 1

[0108] Step (1) Preparation of composite plant essential oil deodorant:

[0109] Prepare a compound (cinnamaldehyde: eugenol: menthol) in a volume ratio of 1:2:3, and mix the three plant essential oils in order according to the ratio from small to large. Stir while adding and mix evenly. After mixing evenly, filter with a 0.22μm microporous filter, take 5ml of the filtrate and mix it with 50g of diatomaceous earth. After mixing well, seal and place it for 30 minutes to allow it to fully absorb, to make a composite plant essential oil deodorant, set aside.

[0110] Step (2) Preparation of tea polyphenols extract:

[0111] Green tea leaves are pulverized and passed through a 60-mesh sieve to obtain green tea powder, which is then dried in a constant-temperature forced air drying oven at 80°C and stored in a refrigerator for later use. 5 g of the tea sample that has passed through a 60-mesh sieve is weighed into a flask, 80 ml of double-distilled water is added, the pH is adjusted to 5, and the mixture is shaken and extracted in a water bath at 60°C for 40 minutes. The residue is filtered through gauze to obtain a filtrate for later use. The resulting residue is again extracted with hot water for 40 minutes, filtered through gauze to remove the residue again, and the two filtrates are combined. Finally, the mixture is centrifuged at 800 r / min, and the supernatant filtrate is collected to obtain an extract rich in tea polyphenols.

[0112] Step (3) Preparation of antibacterial finishing liquid:

[0113] 10-15 g of a composite plant essential oil deodorant and tea polyphenol extract were weighed in a ratio of 1:1, added to 80 ml of distilled water and fully ultrasonically dispersed to obtain an antibacterial finishing liquid.

[0114] Comparative Example 2

[0115] Step (1) Preparation of composite plant essential oil deodorant:

[0116] Prepare a compound (cinnamaldehyde: eugenol: menthol) in a volume ratio of 1:2:3, and mix the three plant essential oils in order according to the ratio from small to large. Stir while adding and mix evenly. After mixing evenly, filter with a 0.22μm microporous filter, take 5ml of the filtrate and mix it with 50g of diatomaceous earth. After mixing well, seal and place it for 30 minutes to allow it to fully absorb, to make a composite plant essential oil deodorant, set aside.

[0117] Step (2) Preparation of spearmint extract:

[0118] 10 g of dried spearmint herb was weighed and crushed, soaked in 10 times its volume of water for 2 hours, decocted three times, each time for 30 minutes, the medicinal liquids were combined and filtered, a portion was precipitated with 3 times the volume of 95% ethanol for 24 hours, the supernatant was filtered, and the volume was recovered to 1 g / ml under reduced pressure. The pH value was adjusted to 6.8 to obtain a filtrate for later use; the boiled medicinal residue was dried, wrapped with filter paper, placed in a Soxhlet extractor, soaked overnight in 8 times 75% ethanol, and continuously refluxed for 6 hours. The alcohol extract was collected and recovered under reduced pressure until a black precipitate was about to appear, extracted with petroleum ether three times, and concentrated under reduced pressure to obtain an extract, which was dissolved with 30 ml of methanol and Tween 80, then fixed to 1 g / ml with distilled water, and the pH value was adjusted to 6.8. The two filtrates were mixed to obtain a spearmint extract.

[0119] Step (3) Preparation of antibacterial finishing liquid:

[0120] 10 g of a composite plant essential oil deodorant, tea polyphenol extract, and spearmint extract were weighed in a ratio of 1:1:1, and 80 ml of distilled water were added and fully ultrasonically dispersed to obtain an antibacterial finishing liquid.

[0121] The antibacterial finishing liquids obtained in Examples 1 to 6 and Comparative Example Products 1 and 2 were tested. The specific testing methods are as follows:

[0122] Antibacterial properties

[0123] Plate spreading and inoculation: In a sterile operating table, after the plate has cooled, pipette 100μl of bacterial suspension onto the plate and spread it evenly with a spreading rod; Place Oxford cup: Under sterile operating conditions, use tweezers to pick up the Oxford cup and place it as far as possible in the center of the plate. Pipette 200μl of the corresponding extract and use hydrochloric acid and sodium hydroxide solutions to prepare a sample solution with a pH of 3-9 under the acidity meter. Slowly pipette the solution into the Oxford cup. For the blank control, pipette an equal amount of distilled water; Incubation: Place each plate in a 37℃ constant temperature incubator for 12 hours, observe the situation and record the diameter of the inhibition zone.

[0124] Mold prevention and control

[0125] In a sterile biosafety cabinet, accurately weigh 25.00 g ± 0.01 g of corn sample and place it in a 3% NaClO solution for 30 seconds, then wash it three times with sterile water. Then, place the corn sample in a 300 mL sterile conical flask, add 225 mL of sterile water and finishing solution, and vigorously shake it on a speed-adjustable multi-purpose shaker for 30 minutes, thereby obtaining 10 -1 The corn sample bacterial suspension was diluted to 10% by volume, and 1 mL of bacterial suspension was mixed with 9 mL of sterile water to make 10 -2 The corn sample bacterial suspension was diluted to a certain degree, and then the corn sample bacterial suspension was diluted in sequence using a 10-fold gradient dilution method.

[0126] Select three appropriate dilutions of bacterial suspension and spread 1 mL of each gradient onto DRBC, DG18, and PDA media. Repeat three times. Incubate in a 30°C incubator in the dark. Observe colony characteristics after 5 days and count colonies after 7 days. Observe the different microbial species on the plates and count the total number of fungi and the number of fungal species.

[0127] Antiviral

[0128] Take the cell culture that has grown into a monolayer in good condition, wash, digest, and blow off the cell monolayer, count it with a hemocytometer, add cell culture medium and adjust the PK-15 cell count to 2×10 5 100 μg / ml, inoculate 0.1 ml per well into a 96-well cell culture plate. Incubate in a 37°C, 5% CO2 incubator for about 13 hours until the monolayer of cells has grown to 1 / 2 to 3 / 4 of its original size, then begin treatment with finishing solution.

[0129] After 4 days, discard the liquid in the wells, add 20ul of thiazolyl blue, continue to culture for 4 hours, then discard the liquid in the wells, add 100ul of DMSO to each well, and oscillate on a micro-oscillator for 5-10 minutes to completely dissolve the MTT formazan crystals. Then, use an enzyme-linked immunosorbent assay (ELISA) to measure the OD value at 570nm.

[0130] Table 1 Antibacterial effect

[0131]

[0132]

[0133] As shown in Table 1, Example 6 has the best antibacterial effect, with inhibition zone diameters of 22.4 mm, 21.6 mm, and 21.4 mm, respectively. Comparative Example 2 has the worst effect, with diameters of 11.6 mm, 12.2 mm, and 10.5 mm, respectively. The finishing liquid exhibits a very strong inhibitory effect on bacteria, with the inhibitory effect on different bacterial species ranked in the order of Staphylococcus aureus > Bacillus subtilis > Escherichia coli. The finishing liquid has good heat resistance and strong tolerance to high temperatures, and extended treatment time has little effect on its antibacterial effect; heat treatment below 100°C has almost no effect on it, and it still has a strong antibacterial effect. Within the pH range of 3-9, the finishing liquid's antibacterial effect on Bacillus subtilis and Escherichia coli is very stable. As can be seen from the data, the inhibition zone diameter does not change much, indicating that it is less affected by pH and temperature. The finishing liquid's inhibitory effect on Staphylococcus aureus also shows good stability within the pH range of 3-9.

[0134] Table 2 Minimum inhibitory concentration (MIC)

[0135]

[0136]

[0137] As shown in Tables 1 and 2, the inhibitory effect of the finishing solution on bacteria increases with increasing concentration. However, at concentrations of 12.6 mg / ml and above, the inhibitory effect reaches its maximum and continues to increase. Taking the concentration at which the inhibition zone diameter reaches 12.2 mm as the minimum inhibitory concentration (MIC), the MICs of the finishing solution for Escherichia coli and Bacillus subtilis are 7.1 mg / ml and 8.2 mg / ml, respectively, and for Staphylococcus aureus is 0.18 mg / ml. This indicates that the finishing solution exhibits a strong inhibitory effect against bacteria even at relatively low concentrations, particularly against pathogens like Staphylococcus aureus. Even trace amounts of the finishing solution can produce an inhibitory effect.

[0138] Table 3 Fungal colony counts

[0139]

[0140]

[0141] Table 4 Mold inhibition rate

[0142]

[0143] Combining Tables 3 and 4, it can be seen that the abundance and dominance of fungi are significantly inhibited, proving that direct contact of the composite plant essential oil with the corn sample has the effect of inhibiting mold growth. The total mold colony count is reduced after treatment with the composite plant essential oil. Among them, Example 6 has the highest inhibition rate against Fusarium, Aspergillus flavus, Penicillium, and Aspergillus glaucoides, reaching 95.5%, 98.4%, 83.2%, and 95%, respectively, while Comparative Example 2 has the lowest inhibition rate, reaching 86.2%, 86.3%, 76.4%, and 87.5%, respectively.

[0144] Table 5 Antiviral inhibition rate

[0145]

[0146] As shown in Table 5, the virus inhibition rate of Example 6 is the largest at 91.4%, while that of Comparative Example 2 is the smallest at 77.7%.

[0147] This specific embodiment is merely an explanation of the present invention and does not limit the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A process for preparing antibacterial diapers, characterized in that The antibacterial diaper structure comprises a diaper body (1), a diaper assembly (2), two groups of front elastic bands (7), two groups of rear elastic bands (8), two groups of sub-adhesive bands (9) and two groups of mother adhesive bands (10), wherein the diaper assembly (2) is bonded to the inner side of the diaper body (1), the two groups of front elastic bands (7) are symmetrically bonded to the left and right parts of the front side of the diaper body (1), the two groups of rear elastic bands (8) are symmetrically bonded to the left and right parts of the rear side of the diaper body (1), the two groups of rear elastic bands (8) correspond to the positions of the two groups of front elastic bands (7), the two groups of sub-adhesive bands (9) are respectively bonded to the outer ends of the two groups of rear elastic bands (8), and the two groups of mother adhesive bands (10) are respectively bonded to the outer ends of the two groups of front elastic bands (7); the diaper assembly (2) comprises an antibacterial layer (3), and the antibacterial layer (3) is prepared by impregnating an antibacterial finishing liquid; The process for preparing the antibacterial finishing liquid comprises the steps of (1) preparing a composite plant essential oil deodorant, (2) preparing a tea polyphenol extract, (3) preparing a spearmint extract, and (4) preparing an antibacterial finishing liquid; The preparation process of the antibacterial finishing liquid specifically comprises: Step (1) Preparation of composite plant essential oil deodorant: Cinnamaldehyde: eugenol: menthol are compounded in a volume ratio of 1:2:3 to 3:4:5, and the three plant essential oils are mixed in order according to the proportion from small to large, and stirred while adding to mix evenly. After mixing evenly, 50-70 ml of the filtrate is mixed with 50-70 g of diatomaceous earth, and after mixing well, the mixture is sealed and placed for 30-40 minutes to allow full adsorption, thereby preparing a composite plant essential oil deodorant for later use; Step (2) Preparation of tea polyphenols extract: Pretreatment of tea leaves: dust the green tea leaves, crush them, pass them through a 60-80 mesh sieve to obtain green tea powder, dry them in a constant temperature blast drying oven at 80-90°C, and store them in a refrigerator for later use; Extraction of tea polyphenols: weigh 5-10 g of a crushed tea sample passed through a 60-80 mesh sieve into a flask, add 80-100 ml of double-distilled water, adjust the pH to 5-6, place in a water bath at 60-80°C for shaking extraction, extract for 40-60 min, filter with gauze to remove the residue, and set aside the filtrate. Extract the residue again with hot water for 40-60 min, filter with gauze to remove the residue again, combine the two filtrates, and finally centrifuge at 800-1000 r / min to collect the supernatant filtrate to obtain an extract rich in tea polyphenols; Step (3) Preparation of spearmint extract: Weigh 10-20g of dried spearmint whole herb, grind it, soak it in 10-15 times its volume of water for 2h, decoct it 3-4 times, each time for 30-40min, combine the medicinal solutions and filter them, precipitate a portion with 3-5 times the volume of 95% ethanol for 24h, filter the supernatant, recover it under reduced pressure to 1-4g / ml, adjust the pH to 6.8-7.2, and obtain the filtrate for later use; dry the boiled medicinal residue, wrap it with filter paper, put it into a Soxhlet extractor, add 8-12 times 75% ethanol and soak it overnight, continuously reflux extract for 6-8h, collect the alcohol extract and recover it under reduced pressure until a black precipitate appears, extract it with petroleum ether 3 times, recover it under reduced pressure and concentrate it to obtain an extract, dissolve it with 30-40ml of methanol and Tween 80, then add distilled water to make it 1-4g / ml, adjust the pH to 6.8-7.2, mix the two filtrates to obtain the spearmint extract; Step (4) Preparation of antibacterial finishing liquid: The preparation process of the antibacterial diaper was obtained by weighing 10-15 g of a composite plant essential oil deodorant, tea polyphenol extract, and spearmint extract in a ratio of 1:1:1-3:3:3, adding 80 ml of distilled water and fully ultrasonically dispersing them.

2. The process for preparing an antibacterial diaper according to claim 1, characterized in that: Double-distilled water was used as the extraction solvent.

3. The process for preparing an antibacterial diaper according to any one of claims 1 to 2, characterized in that: The diaper assembly (2) further comprises a breathable layer (4), a water-absorbing layer (5) and an anti-permeation layer (6); the bottom end of the antibacterial layer (3) is bonded to the top end of the breathable layer (4); the bottom end of the breathable layer (4) is bonded to the top end of the water-absorbing layer (5); and the bottom end of the water-absorbing layer (5) is bonded to the top end of the anti-permeation layer (6).

4. The process for preparing an antibacterial diaper according to claim 3, wherein: The antibacterial diaper structure further comprises a front heat dissipation mesh (11) and a rear heat dissipation mesh (12); the front and rear portions of the diaper body (1) are both connected and provided with openings; the front heat dissipation mesh (11) is sewn to the front opening of the diaper body (1), and the rear heat dissipation mesh (12) is sewn to the rear opening of the diaper body (1).

5. The process for preparing an antibacterial diaper according to claim 4, characterized in that: The antibacterial diaper structure further comprises two sets of adhesives (13) and two sets of soft edges (14). The two sets of adhesives (13) are respectively installed on the front and rear sides of the diaper body (1); and the two sets of soft edges (14) are respectively installed on the left and right ends of the diaper body (1).

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