KR102161492B1 - Biodegradable eco-friendly defecation pad - Google Patents

Abstract

The present invention relates to a biodegradable defecation pad for a companion animal and a manufacturing method thereof, wherein the biodegradable defecation pad uses eco-friendly or biodegradable materials for all layers constituting the defecation pad, thereby being able to solve environmental pollution problems that an existing defecation pad can cause. The biodegradable defecation pad of the present invention is composed of: a protective layer which is stacked on an upper part of an absorbent layer to pass moisture of defecation and protect the absorbent layer; the absorbent layer provided on a lower part of the protective layer to absorb moisture of defecation; and a waterproof layer positioned on a lower part of the absorbent layer and is made of a waterproof material to prevent leakage of moisture absorbed into the absorbent layer.

Description

Biodegradable eco-friendly toilet pad {BIODEGRADABLE ECO-FRIENDLY DEFECATION PAD}

The present invention relates to a defecation pad for a companion animal made of an eco-friendly material and a biodegradable material, and a method of manufacturing the same.

In general, companion animals such as dogs raised at home are defecated in the same place due to animal habits or training. In the past, paper pads such as newspapers and paper boxes are used to absorb moisture and cleanliness of companion animals' excrement. I did.

However, when a companion animal defecates in the above paper pad, a problem such as urine flows according to the amount of defecation has occurred.In order to solve this problem, recently, an absorbent layer made of a material such as pulp and a waterproof layer made of a waterproof material have been formed. A defecation pad is commercially used. These defecation pads are being released in various forms, such as further comprising a protective layer made of a nonwoven fabric or the like on the absorbent layer.

When a companion animal sees urine or feces on such a defecation pad, a liquid of urine or feces passes through the protective layer and is absorbed by the absorption layer. If the user does not immediately check the bowel movement even after the companion animal has completed the bowel movement, there has been a problem of leaving the bowel pad indoors for a long time, and until the used bowel pad is folded and thrown into the trash can or the trash bag, it smells inside the room. There was also a problem with air.

Furthermore, the nonwoven fabric used in the defecation pad was generally manufactured by bonding synthetic fibers with a chemical crosslinking agent and a resin, and the waterproof layer is mostly made of synthetic resin, such as coating a plastic film that is difficult to decompose. Environmental issues continue to be raised in the process.

In particular, environmental problems such as an increase in the average temperature of the earth's atmosphere due to the greenhouse effect due to recent global warming and the occurrence of abnormal climates are continuously becoming an issue worldwide. In Korea, environmental problems such as yellow dust, fine dust, and air pollution, which are directly connected to the health of the whole country, are emerging as a major social problem to be solved, and the use of plastics that are not easily decomposed and discharge toxic substances during incineration can be reduced. There is a constant focus of attention on the method.

As such, as interest in environmental pollution increases, efforts to modify materials used in all fields, including industry, in an environment-friendly direction are continuing, and biodegradable plastics are in the spotlight as part of that.

Biodegradable plastics refer to plastics that can be used like ordinary plastics under normal circumstances, and after use, they are decomposed by the action of microorganisms that inhabit the natural world, and finally converted into carbon dioxide and water, and then returned to nature.

Biodegradable plastics started with polyester, a polymer compound that has both biocompatibility and biodegradability, and are being continuously developed and improved, but there is no case of grafting them into a toilet pad, and the number of populations requiring companion animals will continue to increase in the future. The need for research and development from an eco-friendly perspective is increasing for the toilet pad, which is predicted to increase gradually and steadily along with the prediction that the demand will increase steadily.

Korean Patent Publication No. 10-2019-0120654

An object of the present invention is to provide a defecation pad with enhanced antibacterial, moisture-absorbing and deodorizing functions and a method of manufacturing the same for solving the above problems.

Another object of the present invention is to provide a biodegradable eco-friendly defecation pad and a method of manufacturing the same, which has excellent biodegradability by manufacturing using eco-friendly materials and biodegradable materials, thereby reducing the occurrence of environmental pollutants.

One aspect of the present invention is a protective layer that is stacked on the upper portion of the absorbent layer to pass moisture in the bowel movement and protect the absorbent layer; An absorption layer provided under the protective layer to absorb moisture in the bowel movement; And a waterproof layer made of a waterproof material to prevent leakage of moisture absorbed by the absorbent layer by being positioned under the absorbent layer.

In addition, according to an embodiment of the present invention, it may be formed to include a non-slip member for preventing slipping on the lower surface of the waterproof layer, and specifically, the non-slip material may be formed in a regular dot shape. It is not limited.

The non-slip member is formed of a non-slip material, and the non-slip material may be composed of one or more selected from the group consisting of PVC (polyvinyl chloride), POE (polyolefin elastomer), PP (polypropylene), or urethane. However, the present invention is not limited thereto, and all kinds of non-slip materials that can be easily applied by a person skilled in the art to which the technology belongs may be used. In the present invention, a non-slip member was manufactured using polyolefin elastomer (POE) or PP in order to maintain environment-friendly and biodegradable properties, but is not limited thereto.

Specifically, the protective layer may be made of fibers obtained from the inner skin of a banana stem and a coconut fruit peel, the absorption layer may be made of nano-calcium powder obtained from a closed shell, and the waterproof layer is a biodegradable polymer It may be made of a resin, but is not limited thereto.

Each layer constituting the biodegradable eco-friendly defecation pad of the present invention will be described in detail as follows.

The protective layer formed on the uppermost part of the defecation pad protects the absorbent layer, thereby preventing leakage of fine particles that may exist inside the absorbent layer or being damaged by external shocks. At the same time, it itself has a certain degree of hygroscopicity and antibacterial properties. It is characterized by showing a deodorizing effect.

The material constituting the protective layer may be a fabric woven with eco-friendly fibers derived from natural products in a general manner, and the eco-friendly fibers are arranged in a parallel or negative direction, and a biodegradable polymer resin is bonded together as an adhesive. It may be, but is not limited thereto, and may be used in any form applicable to a person skilled in the art.

Specifically, the eco-friendly fiber may be obtained from the banana stem inner skin and the coconut fruit shell, more specifically, may be obtained through the following method.

(a) adding 10 to 20 parts by weight of purified water to the inner skin of the banana stem and the coconut fruit skin cut into 3 to 6 cm in size and soaking for 24 hours;

(b) heating the eco-friendly fiber material after the above-described process at 80 to 140° C. for 4 to 5 hours, and then leaving it for 12 hours at room temperature for primary aging;

(c) a second aging step of adding a protease obtained by separating from cheonggukjang-derived microorganisms to the eco-friendly fiber material having the first aging, and treating at 30 to 38°C for 30 to 36 hours;

(d) adding 20 to 40 parts by weight of onion peel extract to 200 to 300 parts by weight of the cotton fiber material for which the second aging step has been completed, and culturing by shaking culture at 35 to 39°C for 24 to 72 hours; including; It may be manufactured by.

Specifically, the onion peel extract of the step (d) may be prepared by extracting the onion peel under reflux for 4 hours using 80% ethanol at 95° C. and then concentrating under reduced pressure, but is not limited thereto.

The absorbent layer may include a super absorbent polymer, nano calcium particles obtained from pulp and shells. Specifically, the super absorbent polymer may include agar, collagen peptide, hyaluronic acid, and starch ( Starch), Hydrolyzed Starch, Cross-linked Starch, Dextrin, Gamma PGA (Poly-r-glutamic acid), Carrageenan, Arabic Gum, Xanthan Gum (Xanthan Gum), gelatin (Gelatin), pectin (Pectine), alginic acid (Alginic acid) and may be one or more selected from the group consisting of chitosan (Chitosan), more specifically agar, pectin and chitosan 1:2: It may be mixed in parts by weight of 1, but is not limited thereto.

In addition, the pulp plays a role of supporting the super absorbent polymer of the absorbent layer and at the same time provides flexibility and cushioning to the defecation pad of the present invention, and absorbs moisture, regardless of its type. It can be applied, and wood pulp or straw made from hardwoods such as poplar, eucalyptus, birch, pine, fir, larch, esparto, bagasse, abaca, sisal, jute, cotton, It may be made including one or more of pulverized pulp made by pulverizing raw materials of non-wood pulp made of plant fibers, such as canap and oak bark, but is not limited thereto.

In addition, the nano-calcium particles obtained from the closed shell (shell) included in the absorption layer are heated and calcined at 1100 to 1400°C for 1 to 2 hours at 1100 to 1400°C for one or more of the closed shells of oysters, clams, and abalone shells, and then the pulverization process is performed. It may be prepared by pulverizing nano calcium having a size of 150 to 350 nm through, but is not limited thereto.

On the other hand, the material constituting the waterproof layer may be made of a biodegradable polymer resin, specifically, aliphatic polyester-based PCL (polycaprolactone), PLA (polylactic acid, polylactic acid), Diol / Diacid AP (alphatic polyester), PGA (polyglycolic acid), PBS (polybutylene succinate), poly phosphate ester (Poly (phosphate ester)) and polyphosphazene (Poly (phosphazene) )) may be one or more selected from the group consisting of, and most specifically, PLA or PGA, but is not limited thereto.

During use, the biodegradable plastic has similar functions (strength, water resistance, molding processability, heat resistance, etc.) to general plastics, and through a process in which a polymer compound is cut by the activity of microorganisms in nature and changed by a low molecular compound, finally It refers to plastic that decomposes into inorganic substances that do not adversely affect the environment such as water and carbon dioxide.

The defecation pad of the present invention described above was manufactured using only an eco-friendly material derived from a natural product or a biodegradable polymer material, and it was confirmed that excellent antibacterial, moisture absorbing and deodorizing effects were confirmed, and at the same time, it was confirmed to exhibit excellent biodegradability.

In addition, the eco-friendly fiber manufacturing method is, after the step (d) is completed, poly (oxyethylene) tridecyl ether (Poly (oxyethylene) tridecyl ether) or poly (oxyethylene) lauryl ether (Poly ( It may be to further include a post-treatment process of treating for 20 minutes in hot water of 80° C. or higher containing oxyethylene) lauryl ether).

Specifically, in the post-treatment process, the raw materials that have undergone the refining process are immersed in hot water immediately after the refining process and maintained for a certain period of time, and in this case, a circulating high-pressure cleaning process using a cleaning solution containing a nonionic surfactant as needed. Can be added.

It was confirmed that the biodegradable eco-friendly defecation pad of the present invention exhibits excellent antibacterial, hygroscopic and deodorizing functions (Table 1), and it was confirmed to exhibit excellent biodegradability (Table 2).

The biodegradable eco-friendly toilet pad of the present invention is manufactured using only eco-friendly materials or biodegradable materials derived from natural products in the manufacturing process, and in the disposal process pointed out as a problem in the toilet pad manufactured using existing chemical substances and artificial synthetic fibers. It is characterized by solving the problem of environmental pollution.

In addition, the defecation pad of the present invention exhibits excellent antibacterial, hygroscopic and deodorant effects, and is characterized by reinforcing the moisture absorption and deodorization effect while presenting a waste recycling method by using a closed shell.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be deduced from the configuration of the invention described in the detailed description or claims of the present invention.

Hereinafter, the present invention will be described in detail by examples. However, the following examples are only illustrative of the present invention, and the present invention is not limited by the following examples.

Example 1. Preparation of biodegradable eco-friendly bowel pad

Prior to manufacturing the biodegradable eco-friendly defecation pad of the present invention, all materials were prepared in a washed state to remove contamination such as foreign matter and mold.

First, an eco-friendly fiber to be used in the protective layer and absorbent layer of the defecation pad was prepared.

Specifically, first, 10 to 20 parts by weight of purified water is added to the inner skin of the banana stem and the coconut fruit skin cut into a size of 3 to 6 cm, soaked for 24 hours, and the eco-friendly fiber material after the above-described process is 80 to 140 After heating at °C for 4 to 5 hours, it was left to stand at room temperature for 12 hours to undergo the step of first aging. Thereafter, a protease obtained by separating from cheonggukjang-derived microorganisms was added to the eco-friendly fiber material for which the first aging was completed, and a second aging step of treatment at 30 to 38°C for 30 to 36 hours was performed. To 200 to 300 parts by weight of the cotton fiber material for which the tea aging step is completed, 20 to 40 parts by weight of onion peel extract is added, and the eco-friendly fiber of the present invention is aged by shaking culture at 35 to 39°C for 24 to 72 hours. Was prepared.

At this time, the onion peel extract was prepared by extracting the onion peel under reflux using 80% ethanol at 95° C. for 4 hours and then concentrating under reduced pressure.

Thereafter, the eco-friendly fibers were arranged in a parallel or negative direction, and a nonwoven fabric was prepared using PLA, a biodegradable polymer resin, to form a protective layer of the defecation pad.

In addition, nano-calcium particles obtained from superabsorbent resin, pulp, and shells were added to the upper layer of the waterproof layer prepared using PLA (polylactic acid) or PGA (polyglycolic acid), which is a biodegradable polymer. The prepared absorbent layer was placed. At this time, a mixture of agar, pectin, and chitosan in a weight of 1:2:1 was used as the superabsorbent resin added to the absorbent layer, and the nano-calcium particles consist of 1100 or more of the shells of oysters, clams, and abalone shells. After heating and firing at 1400° C. for 1 to 2 hours, a fine pulverization process was performed to have a size of 150 to 350 nm.

Finally, a biodegradable eco-friendly defecation pad of the present invention was prepared by bonding a nonwoven fabric prepared using eco-friendly fibers on the upper portion of the absorbent layer as a protective layer.

Experimental Example 1. Antibacterial, moisture absorption, and deodorant effect confirmation experiment

An experiment was conducted to compare the antibacterial, hygroscopic and deodorizing effects of the defecation pad prepared in Example 1 and two commercially available defecation pads (Comparative Examples 1 and 2).

Whether or not to maintain the antimicrobial properties of the present invention was compared with the antimicrobial properties by KSK-0693. Specifically, 1 x 10 Staphylococus aureus to be measured on the surface of the defecation pads of Example 1 and Comparative Examples 1 and 2 sterilized at 121°C in a high temperature and high pressure sterilizer (autoclave) ^{After 7} inoculations were inoculated and cultured for 18 hours, the reduction rate of bacteriostatics was measured in% as compared to the standard cotton cloth, and is shown in Table 1 below.

In addition, for comparison of the hygroscopicity and deodorizing power of the present invention, Example 1 and Comparative Examples 1 and 2 were put in a sealed container, manure collected from the same individual was put in the same amount in each container, and ammonia after 60 minutes elapsed. The degree of decrease in concentration and the amount of change in humidity were measured and shown in Table 1 below.

division Antimicrobial (%) Hygroscopicity (%) Deodorization rate (%) Example 1 97.5 91 88 Comparative Example 1
(Contains silica gel) 70.4 95 74 Comparative Example 2
(No Silica Gel) 56.5 70 30

As shown in Table 1, it was confirmed that the defecation pad of Example 1 of the present invention exhibits excellent effects in all items. In particular, the defecation pad of the present invention exhibited an effect similar to the hygroscopicity of the defecation pad of Comparative Example 1 containing silica gel, even though only eco-friendly materials derived from natural products were used, and in terms of antimicrobial properties and deodorization rate, when compared to the defecation pads on the market. It was confirmed that the remarkably excellent effect was exhibited. That is, by using the defecation pad of the present invention, it is possible to reduce the fear of microbial propagation or odor, and thus it seems that it can help maintain cleanliness and health of companion animals.

Experimental Example 2. Experiment to confirm biodegradability of biodegradable eco-friendly bowel pad

In accordance with KS M3100-1 (ISO14855), the degree of biodegradation of the defecation pad of the present invention was measured. The standard is to measure the amount of carbon dioxide generated under composting conditions and measure the biodegradability (%) of the plastic resin.

In the same manner as in Experimental Example 1, the degree of biodegradation was measured for Example 1 of the present invention and two types of defecation pads on the market, and a conventional propylene resin was used as a control. The measurement period was a total of 70 days and was measured every 10 days. The results measured for the Examples and Comparative Examples of the same weight are shown in Table 2 below.

Specifically, the values in Table 2 correspond to the average of the measured values obtained by measuring 10 bowel pads of Example 1 and Comparative Examples 1 and 2, and are rounded to the second decimal place.

Biodegradability (%) Example 1 Comparative Example 1 Comparative Example 2 Control Day 10 0.0 0.0 0.0 0.0 Day 20 6.6 6.0 6.2 6.2 Day 30 13.4 8.4 9.3 8.8 Day 40 20.1 12.3 13.9 13.0 Day 50 28.5 15.5 18.0 17.0 Day 60 36.5 19.1 21.5 19.6 Day 70 45.9 21.0 24.6 22.3

As shown in Table 2, it was confirmed that the biodegradable eco-friendly defecation pad of the present invention exhibits remarkably excellent biodegradability, nearly twice as large as compared to the existing defecation pad on the market. The ISO14855 described above requires a decomposition of 90% or more compared to the reference material within 6 months in Korea, and it is predictable that the defecation pad of Example 1 has excellent biodegradability at a level that satisfies the ISO certification conditions. Referring to 1, Example 1 was found to exhibit improved performance compared to the conventional polymer resin in terms of CO ₂ generation and biodegradability. In particular, in the case of Comparative Example 1 containing silica gel, the biodegradability is lower than that of the control group, which is a conventional propylene resin, and this result indicates that when the conventional defecation pad is excessively discharged, it may cause serious problems in the environment. It suggests. In addition, it was confirmed that the rate of increase in biodegradability of the defecation pad of Example 1 of the present invention became faster as the period elapsed.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and the concept of equivalents thereof should be construed as being included in the scope of the present invention.

Claims (5)

A protective layer stacked on the absorbent layer to pass moisture in the bowel movement and protect the absorbent layer; An absorption layer provided under the protective layer to absorb moisture in the bowel movement; And a waterproof layer made of a waterproof material to prevent leakage of moisture absorbed in the absorbent layer by being positioned under the absorbent layer,
The protective layer; is a non-woven fabric by arranging eco-friendly fibers in a parallel or negative direction and using a biodegradable polymer resin PLA,
The eco-friendly fiber, (a) 10 to 20 times the weight of each material of purified water to the inner skin of the banana stem and the coconut fruit cut to the size of 3 to 6 cm; adding and soaking for 24 hours;
(b) heating the eco-friendly fiber material after the above-described process at 80 to 140° C. for 4 to 5 hours and then leaving it at room temperature for 12 hours to first aging;
(c) a second aging step of adding a protease obtained by separating from cheonggukjang-derived microorganisms to the eco-friendly fiber material having the first aging, and treating at 30 to 38°C for 30 to 36 hours;
(d) Onion peel extract 20 to 40 obtained by reflux extraction for 4 hours using 80% ethanol at 95° C. and concentration under reduced pressure with respect to 200 to 300 parts by weight of the cotton fiber material for which the second aging step has been completed. Aging by shaking culture for 24 to 72 hours at 35 to 39°C by adding parts by weight; And
(e) In hot water of 80℃ or higher containing poly(oxyethylene) tridecyl ether or poly(oxyethylene) lauryl ether as a nonionic surfactant 20 It is manufactured including a post-treatment process that processes for minutes,
The absorbent layer; is prepared including nano-calcium particles obtained from a super absorbent polymer, pulp, and scrap,
The superabsorbent resin is a mixture of agar, pectin, and chitosan in an amount of 1:2:1 by weight, and the nano-calcium particles are calcined by heating at 1100 to 1400°C for 1 to 2 hours, followed by a pulverization process. It is manufactured to have a size of 150 to 350 nm,
The waterproof layer; is a biodegradable, eco-friendly bowel pad made of PLA (polylactic acid, polylactic acid) or PGA (polyglycolic acid). delete The method of claim 1,
The closed shell is any one or more of oysters, clams, abalone shells, biodegradable eco-friendly defecation pad. delete delete