KR101786777B1

KR101786777B1 - Process Biodegradable non-contacting antibacterial resin process and Process Biodegradable non-contacting antibacterial resin composition thereby the same that, wet-tissue packing cap

Info

Publication number: KR101786777B1
Application number: KR1020150143266A
Authority: KR
Inventors: 이근우
Original assignee: 주식회사 바이오켐코리아
Priority date: 2015-10-14
Filing date: 2015-10-14
Publication date: 2017-10-17
Also published as: KR20170043777A

Abstract

The present invention relates to a novel biodegradable resin composition having a non-contact sterilizing function with excellent sterilizing properties, a biodegradable resin composition having the non-contact sterilizing function prepared thereby, and a wet tissue packaging cap having a non-contact sterilizing function using the same .

Description

TECHNICAL FIELD [0001] The present invention relates to a biodegradable resin composition having a non-contact sterilizing function, a biodegradable resin composition having the non-contact sterilizing function and a non-contact antibacterial resin process and Process Biodegradable non- -contacting antibacterial resin composition by the same, wet-tissue packing cap}

Disclosed is a biodegradable resin composition having a non-contact sterilizing function which is environmentally friendly and excellent in sterilizing properties, and a biodegradable resin composition having a non-contact sterilizing function produced by the method, and a wet tissue package Cap.

Coffee is a favorite food for people all over the world, and the consumption of coffee is steadily increasing. Coffee is extracted from roasted coffee beans. Coffee roast is produced as a by-product in the process of roasting coffee beans, and coffee sludge is generated when coffee is extracted from coffee beans. Therefore, as coffee consumption increases, the amount of coffee byproducts such as coffee beans and coffee sludge is also increasing.

On the other hand, a technology for producing a biodegradable resin using coffee beans and coffee sludge has been proposed. The biodegradability of the biodegradable resin using coffee beans or coffee sludge is poor, And the physical properties are poor.

In general, the wet tissue is provided in a plastic pack having a discharge port formed on its upper surface. The discharge port of the plastic pack is provided with a plastic cap, and the discharge port is opened and closed by the plastic cap.

When the wet tissue is taken out, the end of the wet tissue is drawn out to the outside of the plastic pack by being attached to the wet tissue, which is taken out of the wet tissue, in order to facilitate withdrawal of the wet tissue. When the user closes the plastic cap, the user retracts the end portion drawn out of the wet tissue into the ejection opening and closes the plastic cap.

However, since the user holds the wipes drawn out to the outside of the plastic bag back into the plastic bag and closes the plastic cap, the wet tissue is contaminated with bacteria. In particular, the contaminated wipes are contained inside the plastic bag, so that other wet tissues in the plastic bag are also contaminated, which is quite unsanitary.

Korean Registered Patent No. 10-0837067 (2008. 06. 03.)

Disclosure of the Invention The present invention has been made in view of the above problems, and it is an object of the present invention to provide a sludge treatment method and a sludge treatment method, in which the disposal of coffee sludge is environmentally friendly and biocidal, Disclosed is a biodegradable resin composition capable of producing a biodegradable resin composition capable of obtaining a germicidal effect even when not in direct contact, a biodegradable resin composition having the noncontact bactericidal function prepared thereby, and a wet tissue packaging cap having the noncontact bactericidal function .

According to one aspect of the present invention, there is provided a process for producing a coffee beverage comprising: (i) drying a recovered coffee by-product; (Ii) an organic solvent is added to the coffee by-product dried in the step (i) to dissolve the fatty acid contained in the coffee by-product as an organic solvent and then filtered to separate the coffee by-product from the fatty acid- (Iii) re-drying the coffee by-products from which the fatty acid has been removed in the step (ii); (Iv) a step of pulverizing the coffee by-products dried in the step (iii); (V) removing the organic solvent from the organic solvent in which the fatty acid is dissolved in the step (ii) and obtaining a fatty acid; (Vi) coating the coffee by-products obtained in the step (iv) with the fatty acid obtained in the step (v); And
(Iii) mixing the olefin resin and the germicidal capsule in a coffee by-product coated with the fatty acid in the above process,
The sterilizing capsules are characterized in that the volatile sterilizing material is encapsulated by a wall material. A method of manufacturing a biodegradable resin composition having a non-contact sterilizing function is provided.

According to another aspect of the present invention, the volatile pasteurizer is selected from at least one of chlorogenic acid, propolis, grapefruit seed extract, and terpene extracted from coffee.

delete

According to still another aspect of the present invention, there is provided a wet tissue packaging cap molded from a biodegradable resin composition having a non-contact sterilizing function manufactured by the above method.

According to the production method of the present invention having the above-described constitution, a resin composition which is disposable by using coffee by-products and has biodegradability and is environmentally friendly and excellent in bactericidal properties is provided.

In particular, since the resin composition produced by the present invention has a volatile sterilizing property, a sterilizing effect can be obtained even when the sterilizing object is not in contact with the resin composition. Therefore, when the resin composition according to the present invention is applied to various kinds of products, .

The resin composition according to the present invention is particularly suitable for the manufacture of a wet tissue packaging cap. The wipes are packed with a wet tissue packaging cap made of the resin composition according to the present invention, so that the wet tissue can be stored safely and hygienically.

Figures 1a and 1b show test results of the sterilization test of the present invention.
2 is a perspective view of a wet tissue packaging cap made of the resin composition of the present invention
FIG. 3 is a photograph of a UV camera for checking whether the wet tissue packed in the wet tissue packing cap is contaminated
FIG. 4 is a photograph showing the culture of bacteria after storing the wet tissue of FIG. 3 in a packaging pack using the packaging cap according to the present invention and storing the packaging in a packaging pack using a conventional cap.

Hereinafter, the present invention will be described in more detail.

The present invention comprises the following process.

1) Collect coffee by-products and dry them.

In the present invention, the coffee by-product refers to a coffee chaff produced as a by-product after roasting coffee beans and coffee sludge remaining after extracting coffee from the coffee beans.

The coffee by-products are dried so that the moisture content of the collected coffee by-products is 10% or less, preferably, the coffee by-products are dried in a dryer at 80 to 120 ° C.

2) Separate organic and fatty acids from dried coffee by-products.

The fatty acid is removed from the coffee by-products using an organic solvent. Ethanol or hexane is used as the organic solvent. The coffee by-product and the organic solvent are added to the stirring extractor, the fatty acid is extracted with an organic solvent and filtered to separate the coffee by-product from which the fatty acid has been removed and the organic solvent in which the fatty acid is dissolved. The organic solvent in which the fatty acid is dissolved is removed by evaporating the organic solvent using a vacuum concentrator to obtain the remaining one, that is, the fatty acid.

The reason for removing the fatty acid from the coffee by-products is that the coffee by-products are not effectively crushed by the fatty acid in the grinding process described later. That is, the reason for removing fatty acids from coffee by-products is to crush coffee by-products into small, uniform particles.

3) Dry the fatty acid-free coffee by-products.

Dry the fatty acid-free coffee by-products. Preferably, it is dried in a dryer at 80 to 120 DEG C such that the moisture content of the coffee by-products is 10% or less.

4) Crush dried coffee by-products.

The coffee by-products are ground to a size of 100 to 300 mesh. If the coffee by-products are pulverized to have a size smaller than 300 mesh, the dispersibility of the coffee by-products is lowered, so that the coffee by-products and the olefin resin are not sufficiently uniformly stirred in the process to be described later and unnecessary grinding costs are increased. Is larger than 100 mesh, the surface of the product to be formed using the present invention is roughened by the coffee by-products and the quality of the product is deteriorated.

5) The ground coffee by-products are coated with the fatty acid extracted in the above process.

The fatty acid separated from the coffee by-products is coated with the coffee by-products pulverized in the process. Preferably, 0.1 to 5 parts by weight of fatty acid is added to 100 parts by weight of the pulverized coffee by-products to coat the pulverized particles of the coffee by-product.

When the amount of the fatty acid is less than the above amount, the effect due to the fatty acid is insignificant, which is not preferable. If the amount of the fatty acid is more than the above amount, the mechanical properties of the present invention are excessively deteriorated.

This process is concretely as follows.

The pulverized coffee by-products are placed in a rotary coater, and the temperature of the coffee dispersion is uniformly heated to 40 to 50 DEG C by using a fan. While rotating the spin coater at 50 to 100 rpm, the fatty acid heated at 40 to 50 ° C is sprayed at a rate of 50 ml / min to perform coating.

After the injection of the fatty acid is completed, the spin coater is further operated for about 30 minutes to stir the coffee by-products and the fatty acid so that the fatty acid is uniformly coated on the coffee by-products. When the coating is completed in this way, it is allowed to stand at 15 DEG C or lower for 4 hours or more, and the fatty acid-coated coffee by-products are aged.

As described above, when the coffee by-product particles are coated with a fatty acid, the surface of the coffee by-product is modified to improve the biodegradability, and the physical properties of the resin composition are modified to improve flowability, thereby improving product formability.

6) Mix the fatty acid-coated coffee by-products with olefinic resin, bactericidal capsules and other additives.

The olefin-based resin is biodegraded by the principle that the resin-contained peroxide decomposes into low molecules while causing oxidation-reduction reaction with oxygen in the air. In particular, the olefin resin is advantageous for use in the present invention since it is non-toxic and has advantages of being relatively low in molecular weight.

On the other hand, the sterilization capsule has a structure in which a core material is encapsulated by a wall material, and a sterilizing volatile material is used as a core material. Chlorogenic acid, Propolis, Grapefruit Seed Extract, and Terpene, which are coffee-derived bactericidal volatiles that can be used as core materials, Since the kinds of bacteria are different, it is preferable to use one or more of these substances in combination.

And the wall material is preferably a silica polymer or a formalin and a toluene polymer.

Such a sterilization capsule is produced by a known encapsulation method, which will be briefly described as follows.

The liquid core material having a sterilizing function is mixed with the fine silica powder, and the core material is stirred so as to be adsorbed to the silica powder. After the core material is adsorbed to the silica powder as much as possible, the silica powder is firstly subjected to a drying step to obtain a silica powder on which the core material is adsorbed. The silica powder was mixed with colloidal liquid silica and left to stand for 24 hours or more at room temperature. After aging, the mixture was stirred at a speed of 10000 rpm or more at a rate of 20,000 ml / min to an acidic gelation solution, Produce sterile capsules

When the wall material is made of a silica polymer, the wall material is porous. Therefore, even if the core material does not break the wall material, To the outside.

On the other hand, when the wall material is formed of a formalin and a toluene polymer, the wall material is broken by the external pressure and the internal material is diffused to the outside.

Further, fillers, plasticizers, peroxides and decomposition accelerators are further added as additives.

Coconut shell powder (coconut shell powder) is used as the filler. As the filler, inorganic fillers such as calcium carbonate, talc, loess, and viscosity may be used. However, when the coconut shell powder is used, the carbon content of the resin composition is increased to increase the biomass content. The light weight of the present invention is advantageous.

As plasticizers, organic acids such as citric acid, ascorbic acid, malic acid, and tartaric acid are used.

Examples of the peroxide include benzophenone, benzoyl peroxide, and dicumyl peroxide. As the decomposition accelerator, calcium chloride, sodium chloride and the like are used. These peroxides and decomposition accelerators are intended to promote decomposition of the composition according to the present invention. Accordingly, as the peroxide and the decomposition promoter are contained in a larger amount, the decomposition rate of the composition is improved. Therefore, the content of the peroxide and the decomposition promoter needs to be controlled so that decomposition occurs after an appropriate time has been set according to the intended use of the product.

Further, it is obvious that the more the inclusion of these components, the better the degree of decomposition of the composition. However, the mixing amount of the peroxide and the decomposition promoting agent is controlled in consideration of the mechanical properties and processability of the composition.

Preferably, 40 to 60 parts by weight of an olefin resin, 10 to 32 parts by weight of a coffee by-product powder, 0.5 to 5 parts by weight of a sterilizing capsule, 5 to 20 parts by weight of a filler, 1 to 5 parts by weight of a plasticizer, 3 to 10 parts by weight of peroxide, and 0.1 to 5 parts by weight of a decomposition accelerator.

When the olefin-based resin is mixed in an amount less than 40 parts by weight, the moldability of the resin composition is lowered and molding of the product becomes difficult. When the olefin-based resin is mixed in an amount exceeding 60 parts by weight, the content of the other components is lowered and the biodegradability Which is undesirable.

If the coffee by-product powder is mixed with less than 10 parts by weight of the coffee beans, the content of the other components may be lowered when the coffee beans are added in an amount exceeding 32 parts by weight, The mechanical properties and the like of the resin are deteriorated.

If the sterilization capsules are mixed in an amount of less than 0.5 part by weight, the sterilizing effect of the resin composition is insufficient, and if the sterilization capsules are mixed in an amount exceeding 5 parts by weight, the degree of increase in sterilization effect is insignificant compared with the content of the sterilization capsules. It is preferred that the sterile capsules do not exceed 5 parts by weight.

When the filler is mixed in an amount of less than 5 parts by weight, the flowability of the resin composition is poor. When the filler is mixed in an amount exceeding 20 parts by weight, the physical properties of the resin composition are excessively softened, I do not.

If the plasticizer is mixed in an amount of less than 1 part by weight, it is difficult to expect an effect of the plasticizer. If the plasticizer is mixed in an amount of more than 5 parts by weight, the physical properties of the resin composition are undesirably deteriorated.

If the peroxide is mixed in less than 3 parts by weight, it is difficult to expect the effect of the peroxide. If the peroxide is mixed in an amount of more than 10 parts by weight, the resin composition tends to be shattered.

When the degradation accelerator is mixed in an amount of less than 0.1 part by weight, it is difficult to expect the effect of the decomposition accelerator. When the amount exceeds 5 parts by weight, the resin composition contains a large amount of water due to the deliquescence of the decomposition accelerator. There is a problem that bubbles are generated in the product due to water vapor generated in the resin during molding, which is not preferable.

Hereinafter, a specific embodiment of the present invention will be described.

- Examples 1 to 2 and Comparative Examples 1 to 3

Compounds were prepared as shown in Table 1, and bar-shaped specimens were prepared using the prepared compound according to ASTM D 638 test conditions.

Item
Example 1
Example 2
Comparative Example 1
Comparative Example 2

Polyethylene resin

59
53
64
39
Coffee by-product powder coated with fatty acid

12
20
8
35
Sterilization capsule

5
5
-
-
Coconut shell powder

10
10
10
10
Plasticizer

5
5
5
5
peroxide

3
3
3
3
Decomposition accelerator

3
3

5
5
Other

3
One
5
3

&Lt; Mechanical property test >

The tensile strength, flexural modulus and IZOD impact strength of the prepared specimens were measured as shown in Fig. Comparative Example 3 is a result of testing a specimen having the same specifications as those of the embodiment with a PP resin.

Example 1
Example 2
Comparative Example 1
Comparative Example 2
Comparative Example 3

Tensile Strength (Mpa)

18.7
18.0
15
12
16.4
Flexural Strength (Mpa)

25.3
27.2
20.5
15.7
25.4
Flexural modulus (Mpa)

1419.2
1510.2
853.8
643.6
1438
IZOD impact strength (kgcm / cm)

24.7
26.6
21.8
11.4
24.5

As can be seen from Table 2, in Examples 1 and 2, the mechanical properties such as tensile strength and impact strength were equal to or more than that of general PP resin (Comparative Example 3), whereas Comparative Examples 1 and 2 It was found that the mechanical properties were not better than the general PP resin (Comparative Example 3).

The biodegradability of the samples was measured during the simulated aerobic composting process. Samples were the pellets prepared according to Example 2 and fully inoculated and stabilized compost made from the composting of municipal solid waste was used as inoculum. Information on compost used is shown in Tables 3 and 4.

* Ministry of Environment notification 2007-58 ^* : Waste process test method

* M **: RDA (Rural Development Administration) Notice 2005-27

The specimens were mixed with the inoculum and immobilized in a composting container, and composting was carried out under the condition of water content, temperature and oxygen controlled during the test period of 6 months or less.

At this time, carbon dioxide, water, inorganic salts, and the amount of new microorganisms generated from the sample can be said to be final products of biodegradation. The biodegradability of the sample is determined by the ratio between the theoretical amount of carbon dioxide generated from the sample and the amount of carbon dioxide generated from the actual sample. The maximum amount of theoretical CO2 is calculated from the total organic carbon content of the material.

The cumulative biodegradability and the amount of cumulative carbon dioxide generated in each sample under aerobic composting conditions were calculated using the following equation.

Where M _TOT is the amount (g) of total dry solids in the sample added to the compost at the start of the test,

C _TOT : Percentage of organic carbon contained in the total dry solids of the sample (g / g)

44,12: Molecular weight of carbon dioxide and atomic weight of carbon

(CO ₂ ) _T : Cumulative amount (g) of carbon dioxide generated from the composting container containing the sample,

(CO _T ) _B : Average of the amount of carbon dioxide accumulation from the inoculation vessel (g)

ThCO ₂ : the amount of theoretical carbon dioxide generated by the sample in the vessel (g)

The cumulative amount of carbon dioxide generated and the cumulative biodegradability calculated by this method are shown in Table 5. In Table 5, the reference value is the cumulative CO ₂ for the cellulose used as the reference material It is generated. As a reference, the carbon content of the reference material and the sample used were 44.00 wt% and 74.58 wt%, respectively.

* ThCO ₂ ^* : Theoretical carbon dioxide emissions from the amount of carbon

delete

As can be seen from Table 6, the reference material, cellulose, exhibited 74.8% biodegradability during the test period (45 days) and the sample showed 39.7% biodegradation during the test period (45 days).

&Lt; Bactericidal test &

Plate-like specimens were prepared from the resin composition having the composition of Example 1, and the sterilizing power test was performed using the specimens, and the results shown in Figs. 1A and 1B were obtained.

Hereinafter, other embodiments of the present invention will be described, and the same structures and effects as those of the above-described embodiments will not be described.

2 shows a wet tissue packaging cap made of the resin composition according to the present invention. As shown in the figure, the wet tissue packaging cap includes a base frame 10 having a rim shape and a rotation cap 20 pivotally coupled to the base frame 10.

The wet tissue packing cap is attached to the upper surface of the wet tissue packing pack 2 so that the inside of the base frame 10 is aligned with the discharge opening 4 of the wet tissue packing pack 2, The discharge port 4 of the wet tissue packing pack 2 is opened and closed.

As described above, when the wet tissue packing cap made of the resin composition according to the present invention is attached to the wet tissue packing pack 2 and the wet tissue is packed, the sterilizing effect of the resin composition is obtained. Particularly, since the core material of the sterilizing capsule is a volatile sterilizing material, the wet tissue is sterilized by the non-contact and the inside of the package is also sterilized even if the wet tissue is not brought into direct contact with the packaging cap by the volatile sterilizing material.

- Example 3 and Comparative Example 4

A commercially available wipes were purchased, a fluorescent material was applied to the hands, a single wet tissue was pulled out, and the wiped wet tissue was inserted into the packaging pack. In order to check the contamination of the wet tissue put back into the packing pack, a photograph was taken with a UV camera, and the result is shown in FIG.

A packaging cap was prepared from a resin composition having the same composition as that of Example 2 and mounted on a packaging pack. A part of the contaminated wipes was placed in a packaging pack for 24 hours, followed by culturing of bacteria. A portion of the contaminated wipes was placed in a commercially available wet tissue packing pack for 24 hours, followed by culturing of bacteria.

As a result of the culture of the bacteria, the bacteria were killed and the bacteria were not detected in the wet tissue stored in the packaging pack using the packaging cap according to the present invention. In the wet tissue stored in the packaging pack using the general cap, the bacteria were proliferated more than 3,000 times. FIG. 4 is a photograph showing the result of culturing such a group.

Claims

(I) drying the recovered coffee by-products;
(Ii) an organic solvent is added to the coffee by-product dried in the step (i) to dissolve the fatty acid contained in the coffee by-product as an organic solvent and then filtered to separate the coffee by-product from the fatty acid- Process to obtain:
(Iii) re-drying the coffee by-products from which the fatty acid has been removed in the step (ii);
(Iv) pulverizing the coffee by-products dried in the step (iii);
(V) removing the organic solvent from the organic solvent in which the fatty acid is dissolved in the step (ii) and obtaining a fatty acid;
(Vi) coating the coffee by-products obtained in the step (iv) with the fatty acid obtained in the step (v); And
(Iii) mixing the olefin resin and the germicidal capsule in a coffee by-product coated with the fatty acid in the above process,
Wherein the germicidal capsule is encapsulated with a volatile germicidal material by a wall material.

The method according to claim 1,
In the step (b), the filler, the plasticizer, the peroxide, and the decomposition promoter are further mixed,
Wherein the resin composition comprises 40 to 60 parts by weight of an olefin resin, 10 to 32 parts by weight of a by-product powder, 0.5 to 5 parts by weight of a sterilizing capsule, 5 to 20 parts by weight of a filler, 1 to 5 parts by weight of a plasticizer, 10 parts by weight of a degradation accelerator and 0.1 to 5 parts by weight of a decomposition accelerator.

The method according to claim 1,
Wherein the volatile germicidal material is selected from at least one of chlorogenic acid extracted from coffee, propolis, grapefruit seed extract and terpene extracted from coffee. By weight based on the weight of the resin composition.

A biodegradable resin composition having a non-contact sterilizing function, which is produced by the method according to any one of claims 1 to 3.

delete

A base frame 10 attached to the packaging pack 2 so as to be aligned with the discharge port 4 of the wet tissue packing pack 2 having a discharge port 4 for discharging the wet tissue, 10. A wet tissue packing cap comprising: a rotary cap (20) rotatably coupled to a discharge port (10) for opening and closing the discharge port (4)
Wherein the base frame (10) and the rotating cap (20) are formed of a biodegradable composition having a non-contact sterilizing function manufactured by the method according to claim 1.