KR20200124897A - Manufacturing method of filter for carbonated cork water purifier - Google Patents

Abstract

The present invention relates to a method of manufacturing a filter for a carbonized cork water purifier comprising at least one scrim layer, at least one carbonized cork layer, and a hydrophilic nanofiber layer and, more specifically, to a manufacturing method of a filter for a carbonized cork water purifier, comprising the steps of: crushing the carbonized cork into carbonized cork chips; adding at least one of a binder, charcoal, loess, and white clay with carbonized cork chips to generate a carbonized cork mixture; applying the carbonized cork mixture to a surface of at least one scrim layer; applying the nanofiber layer on the surface of a carbonized cork mixture layer; and drying the same.

Description

Manufacturing method of filter for carbonated cork water purifier}

The present invention provides a method of manufacturing a filter for a cork carbonized water purifier.

In general, a water purifier is a device for purifying raw water such as tap water or weak water.Based on a water purification method including precipitation, filtration, sterilization, etc., only substances that are beneficial to the human body are removed by removing heavy metals or other harmful substances contained in raw water. It is a device that provides the included drinking water. Various filters are provided in such a water purifier to purify raw water, and these filters are classified into a sentiment filter, an activated carbon filter (AC filter, Activated Carbon), an UF thickening film filter, or an RO membrane filter, depending on their function. Such filters are used in the water purification steps of sedimentation, sun carbon, membrane, and thick carbon filters.

Carbon loaded webs (CLW) have been used in filters for water purifiers to filter impurities while flowing water with a very low pressure or gravity force. However, recently, Korea has introduced a C mark system to maintain the quality of water purified through a water purifier, and it is difficult to pass the standard for obtaining the C mark only with a filter including a carbon filled web. Accordingly, there is a need to develop a filter for a water purifier with improved filtration performance while maintaining the filtration rate as it is.

An object of the present invention is to provide a method of manufacturing a filter for a cork carbonized water purifier with improved filtration performance than a conventional filter for a water purifier.

In order to achieve the above object, the present invention provides a method for manufacturing a filter for a cork carbonized water purifier comprising at least one scrim layer, at least one carbonized cork layer and a hydrophilic nanofiber layer, comprising: pulverizing the carbonized cork into carbonized cork chips; Adding at least one of a binder, charcoal, loess, and clay to generate carbonized cork chips into a carbonized cork mixture; Applying a cork carbide mixture to the surface of at least one scrim layer; Applying a nanofiber layer to the surface of the cork carbide mixture layer; It provides a method of manufacturing a filter for a carbonized cork water purifier comprising a drying step.

According to the present invention, it is possible to provide a filter for a cork carbonized water purifier with improved filtration performance than a filter for a conventional water purifier, and a water purifier including the filter.

1 shows a cross section of a filter for a cork carbonized water purifier according to the present invention.
2 is a cross-sectional view of a filter for a cork carbide water purifier according to a first embodiment of the present invention.
3 shows a method of manufacturing a filter for a cork carbonized water purifier according to the present invention.

The following content merely illustrates the principles of the present invention. Therefore, those skilled in the art can implement the principles of the present invention and invent various devices included in the concept and scope of the present invention, although not clearly described or illustrated herein. In addition, it is understood that all conditional terms and examples listed in this specification are, in principle, expressly intended only for the purpose of making the concept of the present invention understood, and are not limited to the embodiments and states specifically listed as such. Should be.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms different from each other, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention belongs It is provided to completely inform the scope of the invention to those who have it, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

Although the first, second, etc. are used to describe various elements, components and/or sections, of course, these elements, components and/or sections are not limited by these terms. These terms are only used to distinguish one element, component or section from another element, component or section. Therefore, it goes without saying that the first element, the first element, or the first section mentioned below may be a second element, a second element, or a second section within the technical scope of the present invention.

The terms used in the present specification are for describing exemplary embodiments and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprises" and/or "made of" a referenced component, step, operation and/or element is one or more of the other elements, steps, operations and/or elements. It does not exclude presence or addition.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings that can be commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not interpreted ideally or excessively unless explicitly defined specifically.

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 shows a cross-section of a filter for a cork carbonized water purifier according to the present invention.

Referring to FIG. 1, the present invention includes one or more scrim layers 1, one or more cork carbide layers 2, and a hydrophilic nanofiber layer 5.

The scrim layer is a layer that not only has a filtration function but also fixes the carbonized cork particles of the carbonized cork layer so that the carbonized cork particles do not fall, there is no particular limitation, but it can be made of materials such as polyethylene (PE), polypropylene (PP), and nylon. I can. There is no particular limitation on the thickness of the scrim layer, and may generally range from 0.1 to 1.0 mm.

In the present invention, the scrim layer may be one layer or two or more layers, but two layers are preferred.

In the present invention, the scrim may be a nonwoven web, paper, or a combination thereof. Here, the term "nonwoven" means a web comprising a plurality of randomly oriented fibers. The fibers may be staple fibers or continuous fibers, may be in the form of a single material or a combination of different fibers of multiple materials, or a combination of similar fibers of different respective materials. "Nonwoven web" is used in its collective sense to define a generally planar structure, consisting of staple fibers or continuous filaments in a relatively flat, flexible and porous manner. Nonwoven webs include melt blown fiber webs, spunbond fiber webs, carded webs, airlaid webs, wetlaid webs, spunlace webs, and the like.

The carbonized cork layer serves to filter impurities when the feed water is passed.

The above-mentioned carbonized cork refers to the outermost protective tissue of the stem, branch, and root of a plant that grows hypertrophic. It is produced by the division of the cambium and shows regular cell arrangement. The cell wall is thickened by the deposition of a fatty acid polymer called Sverine. It has the characteristic that water or gas is difficult to pass through.

Such carbonized cork has various characteristics. When applied to a filter for a water purifier according to the present invention, above all, since it does not contain harmful ingredients as a natural material, it is possible to eliminate the causes of chronic diseases such as headaches and various diseases, and is eco-friendly and has antibacterial properties. It is excellent in suppressing the growth of fungi that are harmful to the human body and has excellent deodorization properties.

In the present invention, the cork carbide layer may be one layer or two or more layers, and in this case, the cork carbide layer is preferably composed of two layers.

The hydrophilic nanofiber layer performs a function of additionally filtering impurities from the carbonized cork layer, thereby improving water purification performance without slowing down the filtration rate.

In the present invention, the hydrophilic nanofiber layer may be contained on the nonwoven fabric substrate. Preferably, at least one selected from the group consisting of polyacrylonitrile (PAN), thermoplastic polyurethane, nylon, hydrophilic PVDF, and hydrophilic PTFE is polyethylene terepralate (PET), polypropylene (PP), nylon, It may be in a form contained on a non-woven substrate such as Rayon. When considering the durability, pore size, and filtration speed of the nanofiber sheet, the weight of the nanomaterial may preferably be 0.5 to 3 gsm, more preferably 0.8 to 2 gsm. More preferably, the hydrophilic nanofiber layer is in a form in which a blend of polyacrylonitrile and thermoplastic polyurethane is contained on a polyethylene terephthalate nonwoven fabric substrate. Here, the weight ratio of the polyacrylonitrile and the thermoplastic polyurethane is preferably 50:50 ~ 90:10, and more preferably 60:40 ~ 80:20.

In the present invention, the hydrophilic nanofiber layer preferably has a pore size of 0.5 to 2 μm, and more preferably 0.8 to 1.5 μm.

In addition, in the present invention, the thickness of the hydrophilic nanofiber layer is not particularly limited, but may be preferably in the range of 100 to 300 µm, more preferably 150 to 190 µm.

The filter for a cork carbonized water purifier according to the present invention may be used for a water purifier in a form in which a distribution plate is disposed on an upper portion and a filter housing is disposed on a lower portion thereof.

2 is a cross-sectional view of a filter for a cork carbide water purifier according to a first embodiment of the present invention.

The filter for a cork carbonized water purifier according to FIG. 2 includes a first scrim layer (1), a first cork carbonized layer (2), a second cork carbonized layer (3), a second scrim layer (4) and a hydrophilic nanofiber layer (5). It is a stacked structure in this order.

3 shows a method of manufacturing a filter for a cork carbonized water purifier according to the present invention.

First, the filter for a carbonized cork water purifier according to the present invention can be largely divided into four stages as follows.

1. Crushing the carbonized cork into carbonized cork chips (S10);

2. The step of producing a cork carbide mixture (S20);

3. Step of applying a carbonized cork mixture to the filter surface for a water purifier (S30);

4. Drying step (S40);

The step S10 is a step of pulverizing the raw material of carbonized cork into carbonized cork chips having a particle diameter of 1 mm or less, and the particle diameter of the carbonized cork chips is preferably about 1 mm or less.

The step S20 is a step of stirring the carbonized cork chips with a binder to generate a carbonized cork mixture, wherein the crushed carbonized cork chips are pulverized to a predetermined size so as to be bonded to the surface of the water purifier filter while bonding the pulverized cork chips to each other. It is a process of mixing and stirring a binder at a certain ratio. In this case, the carbonized cork chip and the binder are ideally composed of 1 to 35% by weight of the carbonized cork chip and 65 to 99% by weight of the binder.

The binder is for bonding the carbonized cork chips to each other while having adhesiveness, and it is preferable to have hydrolyzability and non-toxicity based on a natural material, which is by using seaweeds such as kelp or agar, or extracted from vegetable glue or plants It may be possible by using a vegetable binder or the like.

In addition, the binder may include a silica-based or silicate-based component for easy preparation to have hydrolysability and non-toxicity.

In addition, when the carbonized cork chip and the binder are mixed in the step S20, at least one of charcoal, loess, and white soil is additionally included, making it possible to manufacture a more environmentally friendly filter for water purifiers, and further improve deodorization and antibacterial properties. In addition, far-infrared radiation and harmful electromagnetic wave blocking effects can be expected.

Step S30 is a step of applying the carbonized cork mixture to the surface of the scrim layer in the form of dots or lines having a certain distance from each other, and applying a nanofiber layer to the surface of the carbonized cork mixture, and a water purifier between the applied cork carbonized mixture While allowing the air permeability of the filter itself to be maintained, various effects of carbonized cork can be combined.

At this time, the application may be applied in a dot or line form by a printing method.

As an example of the printing method, it can be achieved by using a rotary roller in which a number of dots or line-shaped application grooves having a certain distance from each other around the outer surface are provided, and the rotary roller is located at the top of the rotary roller while rotating in one direction. When the carbonized cork mixture is injected into the groove for application, it rotates downward, and when the carbonized cork mixture injected into the groove for application is rotated downward, it is in close contact with the surface of the scrim layer transferred along the conveyor and is applied in a printing form. May be possible.

In addition, the application can be applied in a dot or line form by spraying through a nozzle.

In the case of spraying, the scrim layer can be transferred in one direction on a conveyor, and then the carbonized cork mixture is continuously fed at a constant pressure through a spray nozzle having a plurality of spray nozzles provided in the width direction above the scrim layer. It is desirable to be able to spray or dot spray at regular intervals.

In addition, the nanofiber layer applied to the surface of the cork carbide mixture may also be applied in the same manner as above, and according to the design, the coating of the cork carbide mixture may be performed on one surface or the front and rear surfaces of the scrim layer.

Step S40 is a step of curing the surface of the carbonized cork mixture by drying the filter for a carbonized cork water purifier.

As an example of drying, the filter for a water purifier coated with a carbonized coke mixture on the surface can be transported in one direction along a conveyor, and a drying room through which the conveyor can pass is installed, and then air from an external air supply device to the inside of the drying room. Drying may be carried out by spraying, or a near-infrared ray scanning device may be provided in the drying chamber, and the near-infrared ray may be exposed to the filter for a water purifier coated with the carbonized cork mixture for a predetermined period of time to dry.

Through such a drying step, the carbonized cork mixture is cured and adhered to the surface of the filter for the water purifier.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You can understand. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting.

Claims (9)

In the method of manufacturing a filter for a cork carbonized water purifier comprising at least one scrim layer, at least one cork carbonized layer and a hydrophilic nanofiber layer,
Pulverizing the carbonized cork into carbonized cork chips;
Adding at least one of a binder, charcoal, loess, and clay to generate carbonized cork chips into a carbonized cork mixture;
Applying a cork carbide mixture to the surface of at least one scrim layer;
Applying a nanofiber layer to the surface of the cork carbide mixture layer;
Including a drying step;
A method of manufacturing a filter for a carbonized cork water purifier.
The method of claim 1,
The step of producing the cork carbide chips into a cork carbide mixture,
Characterized in that it further comprises the step of adding at least one of charcoal, loess, and clay when mixing the carbonized cork chips and the binder
A method of manufacturing a filter for a carbonized cork water purifier.
The method of claim 1,
The scrim layer and the cork carbide layer, characterized in that consisting of at least one layer
A method of manufacturing a filter for a carbonized cork water purifier.
The method of claim 1,
The cork carbide layer,
Characterized in that mixed with 1 to 35% by weight of carbonized cork chips and 65 to 99% by weight of the binder
A method of manufacturing a filter for a carbonized cork water purifier.
The method of claim 1,
The hydrophilic nanofiber layer is characterized in that at least one selected from the group consisting of polyacrylonitrile (PAN), thermoplastic polyurethane, nylon, hydrophilic PVDF, and hydrophilic PTFE is contained on the nonwoven fabric substrate.
A method of manufacturing a filter for a carbonized cork water purifier.
The method of claim 5,
The hydrophilic nanofiber layer is characterized in that the blend of polyacrylonitrile and thermoplastic polyurethane is contained on a polyethylene terephthalate nonwoven fabric substrate.
Filter for carbonized cork water purifier.
The method of claim 5,
The weight ratio of the polyacrylonitrile and the thermoplastic polyurethane is 50:50 ~ 90:10, characterized in that
Filter for carbonized cork water purifier.
The method of claim 1,
Applying a cork carbide mixture to the surface of the at least one scrim layer; And applying a nanofiber layer on the surface of the cork carbide mixture layer; characterized in that the method comprises a method of applying in a dot or line form by a printing method.
Filter for carbonized cork water purifier.
The method of claim 1,
Applying a cork carbide mixture to the surface of the at least one scrim layer; And applying a nanofiber layer to the surface of the carbonized cork mixture layer; characterized in that it comprises a method of applying in a dot or line form by spraying through a nozzle.
Filter for carbonized cork water purifier.

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