KR-20260066323-A - MANUFACTURING METHOD OF NON~WOVEN FABRIC FOR FILTER AND MANUFACTURING APPARATUS

Abstract

The present invention relates to a method for manufacturing an activated carbon filter and an apparatus for manufacturing an activated carbon filter, and more specifically, to a method for manufacturing an activated carbon filter and an apparatus for manufacturing an activated carbon filter that improves adsorption performance by interposing activated carbon powder between nonwoven fabrics and bonding them using a adhesive component made of a low-melting point resin contained in the nonwoven fabric, without using a separate adhesive. To achieve the above objectives, the method for manufacturing an activated carbon filter according to the present invention comprises: a) a step of producing a first nonwoven fabric and a second nonwoven fabric composed of 30 to 100 weight% of a thermoplastic core-sheath type composite fiber in which a high melting point resin is the core component and a low melting point resin is the sheath component, and 0 to 70 weight% of a high melting point fiber; b) a step of applying activated carbon powder to the first nonwoven fabric; c) a step of preheating the first nonwoven fabric coated with the activated carbon powder to 110 to 190°C to pre-melt the fiber of the sheath component in the first nonwoven fabric; and d) a step of laminating the second nonwoven fabric onto the activated carbon powder of the first nonwoven fabric and laminating it by heat fusion.

Inventors

• 김선헌
• 김준홍

Assignees

• 김선헌
• 김준홍

Dates

Publication Date

20260512

Application Date

20241104

Claims (4)

1. a) a step of producing a first nonwoven fabric and a second nonwoven fabric composed of 30 to 100 weight% of a thermoplastic core-sheath type composite fiber, in which a high-melting-point resin is the core component and a low-melting-point resin is the sheath component, and 0 to 70 weight% of a high-melting-point fiber; b) a step of applying activated carbon powder to the first nonwoven fabric; c) A step of preheating the first nonwoven fabric coated with the activated carbon powder to 110~190℃ to pre-melt the fibers of the filament component in the first nonwoven fabric; d) a step of laminating the second nonwoven fabric onto the activated carbon powder of the first nonwoven fabric and laminating it by heat fusion; characterized by a method for manufacturing an activated carbon filter.
2. In Article 1, The first nonwoven fabric has a weight of 50 to 140 g/m² per unit area, and A method for manufacturing an activated carbon filter, characterized in that the second nonwoven fabric has a weight of 20 to 100 g/m² per unit area.
3. In Article 1, A method for manufacturing an activated carbon filter characterized in that step d) above is a thermal calendering method.
4. A method for manufacturing an activated carbon filter comprising: a first nonwoven fabric and a second nonwoven fabric comprising 30 to 100 weight% of a thermoplastic core-sheath type composite fiber in which a high-melting-point resin is the core component and a low-melting-point resin is the sheath component, and 0 to 70 weight% of a high-melting-point fiber, and activated carbon powder interposed between the nonwoven fabrics, The first drum on which the above-mentioned first nonwoven fabric is wound, A dispenser for applying activated carbon powder onto a first nonwoven fabric unwound from the first drum, A dryer through which a first nonwoven fabric coated with activated carbon powder passes, The second drum on which the above second nonwoven fabric is wound, An activated carbon filter manufacturing apparatus characterized by including a heat fusion device that laminates the first nonwoven fabric and the second nonwoven fabric through heat fusion, while the second nonwoven fabric unwound from the second drum is laminated onto the activated carbon powder of the first nonwoven fabric that has passed through the dryer.

Description

Manufacturing Method of Non-Woven Fabric for Filter and Manufacturing Apparatus with Improved Adsorption Performance The present invention relates to a method for manufacturing an activated carbon filter and an apparatus for manufacturing an activated carbon filter, and more specifically, to a method for manufacturing an activated carbon filter and an apparatus for manufacturing an activated carbon filter that improves adsorption performance by interposing activated carbon powder between nonwoven fabrics and bonding them using a adhesive component made of a low-melting point resin contained in the nonwoven fabric, without using a separate adhesive. Conventional nonwoven fabrics used as automotive air conditioner filters are manufactured by producing nonwoven fabrics consisting solely of high-melting-point fibers or core-sheath composite fibers, applying activated carbon and an adhesive between the nonwoven fabrics, and then heating and pressing them. The activated carbon used in this case consists mostly of carbon. It is manufactured by treating wood, peat, or other materials with activating agents such as zinc chloride or phosphoric acid and drying them, or by activating charcoal with steam, and it is characterized by strong adsorption properties. Activated carbon is primarily used as an adsorbent to absorb gases or moisture, but it has a wide range of other applications, such as solvent recovery, gas purification, and decolorization. Such activated carbon possesses fine pores and a large surface area, so it is used as a material for various filters. In addition, the activated carbon filter must be fixed to the nonwoven fabric by mixing the activated carbon powder with an adhesive (here, the adhesive refers to chemical adhesive, hot melt powder, or hot melt granules, etc.), but such general adhesives have the disadvantage of blocking the pores of the nonwoven fabric, thereby weakening the breathability of the nonwoven fabric, as well as reducing the adsorption capacity due to the combination of the activated carbon and the adhesive. In addition, there was a disadvantage in that the adsorption performance of the activated carbon was reduced as the surface of the activated carbon particles was covered with adhesive. FIG. 1 is a schematic diagram illustrating an activated carbon filter manufacturing apparatus according to the present invention. FIG. 2 is a schematic diagram illustrating the opening and closing means applied to the dryer according to the present invention. The present invention is capable of various modifications and may take various forms, and embodiments (aspects or examples) are to be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. In each drawing, identical reference numerals, particularly those with identical tens and ones digits, or identical tens, ones, and alphabets, represent components having the same or similar functions; unless otherwise specified, the components referred to by each reference numeral in the drawing should be understood as components conforming to these criteria. In addition, in each drawing, the components are depicted with exaggerated sizes or thicknesses, or simplified, for the sake of ease of understanding; however, the scope of protection of the present invention should not be interpreted as being limited by this. The terms used herein are used merely to describe specific embodiments (aspects or examples) and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "consisting of" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not excluding in advance the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application. The terms "~1~," "~2~," etc., described in this specification are used merely to distinguish different components and are not bound by the order of manufacture; furthermore, the names may not match those in the detailed description of the invention and the claims. For convenience in describing the method for m