KR100467205B1 - Disposable diaper comprising antibacterial agent - Google Patents

Abstract

In the present invention, silver-zeolite, which has a silver ion having excellent antimicrobial activity as an antimicrobial agent, is applied to a disposable diaper having hygienic importance by applying silver-zeolite, which is supported by a zeolite having a porous structure, through an ion exchange reaction or the like. And disposable absorbent products that provide antimicrobial functions against bacteria and microorganisms as well as inorganic contaminants, including liquid permeable surface sheets (2), downy pulp (3 "), superabsorbent resins (3 '), and tissues (5). It is made by attaching silver-zeolite as a antimicrobial agent to the superabsorbent resin (3 ') in the absorbent to the disposable absorbent product composed of the absorbent composed of the absorbent and the liquid impermeable back sheet (1), whereby the antimicrobial effect is absorbed disposable. It is effective to provide a functional disposable absorbent product which is imparted to the product to prevent skin sores and unpleasant odors.

Description

Disposable diaper comprising antibacterial agent

The present invention relates to a disposable absorbent product containing an antimicrobial agent to have an antimicrobial function. More specifically, the present invention applies silver-zeolite, in which silver ions having excellent antimicrobial activity as an antimicrobial agent, is applied to a disposable diaper, which is important for hygiene, by excretion and excretion of silver-zeolite, which is supported by a zeolite having a porous structure through an ion exchange reaction. The present invention relates to a disposable absorbent product that provides antibacterial function against bacteria and microorganisms as well as various organic and inorganic pollutants generated.

In the present invention, the disposable absorbent product means a product that absorbs urine, that is, a physiological human secretion of an infant or an adult, that is, a disposable diaper (diaper, nappy) and the like.

In general, the occurrence of skin irritation, erythema (redness) and dermatitis caused by secretory absorbent products is characterized by strong pressure to fix the absorbent product to the body part, saturated skin and mucous membranes. Physicochemical factors such as tissue sores due to absorption, and the absorber is wetted with secretions, and then fermented and decayed due to contamination of dermal bacteria or enterobacteriaceae. It is well known that this is due to chemical and microbiological factors resulting from the physiological pH of from 6.0 to 7.5 or by producing by-products that are irritating to the skin.

Conventional disposable absorbent products consisting of a liquid permeable surface sheet, a downy pulp, a superabsorbent resin and a tissue, and a liquid impermeable back sheet, have a urea in the urine if the absorbent product continues to be worn after pissing. ) Ammonia produced by fermentation and decay by urease produced during fermentation and metabolism of feces or skin-derived bacteria or yeast, especially candida albicans, causes an increase in pH There was a problem that the inherent ion balance can not be maintained, causing skin side effects as described above. Similarly, there was a problem of causing a pH change and an unpleasant odor due to propagation of harmful bacteria from secretions.

Among the conventional methods for solving these problems, the biological method is to treat the disposable absorbent product with a disinfectant to sterilize dermatological bacteria such as ammonia-causing bacteria and increase the pH by dilution by adding various organic acids. Inhibiting methods have been used. Organic acids used to suppress the above rise in pH include citric acid, adipic acid, azelaic acid, malic acid, tartaric acid, gluconic acid, rutaric acid, leblenic acid, glycolic acid, succinic acid, fumaric acid, pimelic acid, sumeric acid And weak acid substances such as sebacic acid. These organic acids have a pH of 3.0 to 5.5, which may be a skin irritation similar to skin rash due to ammonia formation, which is far from the skin's physiological pH of pH 6.0 to 7.5. There was a problem that it could not buffer at the pH of the range, but only slowed down the increase rate of the pH.

In addition, some products use the petrolatum treatment method to treat the petroleum jelly on the liquid permeable surface sheet in order to suppress the skin rash caused by the friction between contact with the feces and skin, but the effect was insignificant . This may be due to the fact that petroleum jelly is coated on the skin to block some contact between the feces and the skin, but it is physically impossible to completely block it, and to relieve secondary sores or inflammation for more effective relief of sores. There is a disadvantage that it is necessary to add a material having an anti-inflammatory or bactericidal function.

Therefore, the present inventors have conducted research to manufacture a functional absorbent product that has been excellently improved skin anti-germ function in the existing disposable absorbent product, and as a result, the porous adsorbent zeolite has antibacterial and sterilizing function, It has been found that the addition of so-called silver-zeolites, which are technically supported by silver, can mitigate the sores or discomfort caused by dermal fungi, and especially when applied to disposable absorbent products, The technology to apply was developed and this invention was completed.

It is an object of the present invention to apply silver-zeolite, which has silver ions as a antimicrobial agent to a zeolite having a porous structure, through ion exchange reactions, to disposable diapers, to various organic and inorganic pollutants generated from excretion secreted and excreted by physiological action. As well as to provide a disposable absorbent product that gives antibacterial function against bacteria and microorganisms.

1 is a plan view schematically showing one specific embodiment of a disposable absorbent article according to the present invention.

2 is a cross-sectional view of the disposable absorbent article of FIG. 1.

※ Explanation of code for main part of drawing

1: back sheet 2: surface sheet

3: absorber layer 3 ': super absorbent polymer

3 ": Down pulp 4: Block cuff

5: tissue

The present invention provides a disposable absorbent article comprising an absorbent composed of a liquid permeable surface sheet, a downy pulp, a super absorbent resin and a tissue, and a liquid impermeable back sheet, wherein the silver-zeolite of Formula 1 is added to the superabsorbent resin. Provided is a disposable absorbent product containing an antimicrobial agent, characterized in that the adhesion. [Formula 1] AgO · Al ₂ O ₃ · xSiO ₂ · yH ₂ O In Formula 1, x is an integer of 2 to 10, y Is a natural number indicating the number of mole molecules to be bonded, that is, the number of bonded water, and is 0 to 5.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Disposable absorbent articles containing the antimicrobial agent according to the present invention are liquid permeable surface sheets 2, downy pulp (3 "), superabsorbent resin (3 ') and tissue (as shown schematically in Figs. 1 and 2). It is made by adhering the silver-zeolite of the following formula (1) to the superabsorbent resin (3 ') in the absorbent as an antimicrobial agent to the disposable absorbent article composed of the absorbent composed of 5) and the liquid-impermeable backsheet (1). in the _{AgO · Al 2 O 3 · xSiO} 2 · yH 2 O formula 1, x is an integer from 2 to 10, y is a number of molbunja coupled namely, 0 to 5 as a natural number representing the number of the number of bonds.

Silver-zeolite of the formula (1) is a silver that is known for its efficacy in the antimicrobial activity is widely known as a porous adsorbent material, and is bonded and supported by a known method such as ion exchange to the zeolite that is being used, and excellent antibacterial effect It is evaluated.

In particular, silver has long been used to protect the emperor and wages from infectious diseases and poisons in the imperial family, and in the case of zeolites, it is extremely safe for living organisms such as added to feeds to promote the growth of livestock. It is a well known fact that it is extremely safe for humans.

The content of silver-zeolite as an antimicrobial agent used in the present invention may vary depending on the subject and the size and type of use of the disposable absorbent product containing the antimicrobial agent according to the present invention. The appropriate amount and the like can be determined by trial and error repetitive experiments and the like to those skilled in the art.

Specifically, a general antimicrobial agent may be applied in various forms in the existing product structure, but in particular, a superabsorbent polymer having antibacterial function by attaching silver-zeolite in the form of fine particles to the superabsorbent polymer (3 ') of the absorbent absorbing urine. It is easy to apply (3 ') in the process and can express excellent physical properties. The amount of silver-zeolite applied as the antimicrobial agent may be 0.01 to 20% by weight based on the standard weight of the super absorbent polymer 3 '. When the content of the silver-zeolite is less than 0.01% by weight, there may be a problem that a predetermined antibacterial effect is not obtained due to a weak antimicrobial effect, on the contrary, when the content exceeds 20% by weight, the superabsorbent polymer of the absorber In addition to the difficulty of sufficiently adhering to '), there may be a problem that causes problems such as urine absorption, urination ability, urination rate, etc., which are the shape, mass, and basic physical properties of the absorbent product.

In the disposable absorbent product, a blocking cuff 4 for preventing leakage of urine or the like may be further formed around the absorbent layer 3.

Hereinafter, preferred embodiments and comparative examples of the present invention will be described.

The following examples are intended to illustrate the invention and should not be understood as limiting the scope of the invention.

Example 1

As shown in FIGS. 1 and 2, the liquid-permeable surface sheet 2, the liquid-impermeable back sheet 1, and the absorbent layer 3 are positioned between the surface sheet 2 and the back sheet 1. The absorbent layer (3) is made of a super absorbent polymer (3 ') and a fluffy pulp (3 ") and tissue (5) in a disposable absorbent product, the superabsorbent resin (3') of the antibacterial agent of silver-zeolite The fine powder was attached in an amount of 0.1% by weight based on the total weight of the superabsorbent polymer (3 '), and the disposable absorbent product including the absorbent layer (3) comprising the superabsorbent polymer (3') to which the antimicrobial agent was attached. Prepared.

The antimicrobial activity evaluation and deodorant power evaluation for the superabsorbent polymer (3 ') to which the antimicrobial agent is attached was carried out as follows. .

In addition, the antimicrobial activity evaluation and the deodorizing power evaluation for the disposable absorbent product comprising the absorbent layer 3 containing the superabsorbent polymer (3 ') with the antimicrobial agent described above, and the antibacterial activity evaluation results of the results are shown in Table 3 In Table 4, and the results of deodorant evaluation.

Antibacterial Activity Test

To evaluate the antimicrobial activity of the super absorbent polymer (3 '), 0.1 g of the super absorbent polymer (3') to be tested for antimicrobial activity was added to a 100 ml flask, and the microbial suspension (E. coli, Staphylococcus and Candida bacteria) to be tested was suspended. 1/100 dilution agar medium) is added to absorb and swell 1 ml, and stored at 37 ° C for 6 hours, shaken for 10 minutes with the addition of 100 ml of sterile saline solution. It was.

To evaluate the antimicrobial activity of the disposable absorbent product, the diaper specimen to be evaluated for antimicrobial activity was cut into squares of 3 cm 2, and then put into a sterile 200 ml Erlenmeyer flask containing 70 ml of phosphate buffer, and E. coli (or Staphylococcus aureus, Candida). Bacteria) 5 ml of suspension phosphate buffer solution was added. Then, after shaking for 1 hour at 25 ° C and 125 rpm, the antimicrobial activity was evaluated by measuring the number of live bacteria.

Sterilization rate was calculated by the following equation (1) and evaluated.

Sterilization Rate (%) = ((Initial Viable Count-Viable Count in Sample) / Initial Viable Count) * 100

Deodorization test

The deodorizing power evaluation for the super absorbent polymer (3 ') is performed by injecting ammonia (or hydrogen sulfide) in 1L of air to the desired initial concentration, adjusting the test gas, and then performing the deodorizing power evaluation on the test bag (3'). ) 1g and the test gas were added together. Then, after 2 hours, the residual amount of ammonia (or hydrogen sulfide) was measured and evaluated by a normal gas detection tube.

Deodorizing power evaluation for disposable absorbent products is also performed by adjusting the test gas by injecting ammonia (or hydrogen sulfide) in 1L of air to the desired initial concentration, and then testing the test piece obtained by cutting the diaper test piece to be deodorized into 3 cm squares. The gases were added together, and after 2 hours, the residual amount of ammonia (or hydrogen sulfide) was measured and evaluated by a normal gas detection tube.

Example 2

A super absorbent polymer 3 'and a disposable absorbent product including the same were prepared in the same manner as in Example 1 except that 0.5 wt% of the amount of the antimicrobial agent attached to the superabsorbent polymer 3' was used. , Antibacterial activity evaluation and deodorant power evaluation was also performed in the same manner as in Example 1 shown in Table 1 to Table 4 below.

Example 3

A super absorbent polymer 3 'and a disposable absorbent product including the same were prepared in the same manner as in Example 1 except that the amount of the antimicrobial agent attached to the superabsorbent polymer 3' was 3% by weight. , Antibacterial activity evaluation and deodorant power evaluation was also performed in the same manner as in Example 1 shown in Table 1 to Table 4 below.

Example 4

A super absorbent polymer 3 'and a disposable absorbent product including the same were prepared in the same manner as in Example 1 except that the amount of the antimicrobial agent attached to the superabsorbent polymer 3' was 5% by weight. , Antibacterial activity evaluation and deodorant power evaluation was also performed in the same manner as in Example 1 shown in Table 1 to Table 4 below.

Example 5

A super absorbent polymer 3 'and a disposable absorbent product including the same were prepared in the same manner as in Example 1, except that 10 wt% of the amount of the antimicrobial agent attached to the superabsorbent polymer 3' was used. , Antibacterial activity evaluation and deodorant power evaluation was also performed in the same manner as in Example 1 shown in Table 1 to Table 4 below.

Comparative example

Except for adhering the antimicrobial agent, the same superabsorbent resin (3 ') and disposable absorbent product as the super absorbent resin (3') and the disposable absorbent product used in Example 1 were used. The same results as in Example 1 are shown in Tables 1 to 4 below.

Sterilization Rate (%) Escherichia coli Staphylococcus Candida Example 1 96 87 89 Example 2 97 90 91 Example 3 97 93 95 Example 4 98 98 97 Example 5 99 99 99 Comparative example -30 -2 3 Ammonia (ppm) Hydrogen sulfide (ppm) Initial concentration 10 50 5 10 Example 1 0.6 7 0.3 0.5 Example 2 0.6 5 0.3 0.5 Example 3 0.4 4 0.2 0.3 Example 4 0.3 3 0.1 0.3 Example 5 0.2 2 0.1 0.1 Comparative example 10 24 5 10 Sterilization Rate (%) Escherichia coli Staphylococcus Candida Example 1 95 84 79 Example 2 96 87 85 Example 3 97 91 90 Example 4 98 94 91 Example 5 99 97 93 Comparative example 39 -12 13 Ammonia (ppm) Hydrogen sulfide (ppm) Initial concentration 10 50 5 10 Example 1 0.7 8 0.4 0.6 Example 2 0.7 8 0.4 0.5 Example 3 0.6 7 0.3 0.5 Example 4 0.5 5 0.2 0.5 Example 5 0.2 3 0.1 0.1 Comparative example 9.2 21 4.7 9 As can be clearly seen in Table 1 and Table 2, when the silver-zeolite as an antimicrobial agent is attached to the super absorbent polymer 3 'which greatly improves the ease of application according to the present invention (Examples 1 to 5) Compared with the conventional superabsorbent polymer 3 '(comparative example) which does not use silver-zeolite, it can be seen that the antibacterial and deodorizing power are excellent. In particular, as shown in Table 3 and Table 4, when the silver-zeolite which is an antimicrobial agent is applied according to the present invention (Examples 1 to 5), the antibacterial activity is higher than that of the product which is not applied to the silver-zeolite (comparative example) You can see a dramatic improvement.

Therefore, according to the present invention, when silver-zeolite is applied to a disposable absorbent product as an antibacterial agent, the antibacterial effect is imparted to the disposable absorbent product, thereby providing a functional disposable absorbent product which can prevent skin sores and unpleasant odors.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

Claims (2)

In a disposable absorbent product comprising an absorbent body composed of a liquid permeable surface sheet, a downy pulp, a superabsorbent resin and a tissue, and a liquid impermeable back sheet, the superabsorbent resin is prepared by attaching a silver-zeolite of Formula 1 below. Disposable absorbent products containing an antimicrobial agent, characterized in that; [Formula 1] _{AgO · Al 2 O 3 · xSiO} 2 · yH 2 O In Chemical Formula 1, x is an integer of 2 to 10, y is a natural number indicating the number of mole molecules to be bonded, that is, the number of bonding water is 0 to 5. The method of claim 1, Disposable absorbent article containing the antimicrobial agent, characterized in that the silver-zeolite is contained in at least 0.01% by weight to less than 10% by weight relative to the total weight of the super absorbent polymer constituting the absorbent layer.