Abstract: A substrate processing method, involving etching a silicon nitride layer selectively in a substrate where a silicon oxide layer and the silicon nitride layer are stacked, includes: wet-etching the silicon nitride layer with a phosphoric acid-based etching solution; and dry-etching a regrowth oxide, which is formed on a surface of the silicon oxide layer in the wet etching step, with an etching gas.

Abstract: Provided are an artificial leather and a method of manufacturing the same. The artificial leather includes: a base fabric; a polyvinyl chloride film bonded to a surface of the base fabric; bonding layer formed on a surface of the film; a first foam layer formed on the bonding layer in a patterned shape; a first color layer formed on a surface of the foam layer and having the same pattern as the first foam layer; and a surface treatment layer formed on a surface of the first color layer with the same pattern as the first color layer or formed on a surface of the bonding layer without the first foam layer and the surface of the first color layer. to the artificial leather of the present invention may have a light weight and implement various three-dimensional patterns and colors as compared with a conventional PVC foam artificial leather.

Abstract: A method of recycling a composite container for a high-pressure gas is carried out so as to recover carbon fibers in a long fiber state, using a recovering apparatus that can separate the inner and outer containers of a composite container for a high-pressure gas such as a hydrogen tank and take carbon fibers out of the outer container without cutting it in order to recycle the composite container, in order to increase the degree of recovery of carbon fibers and improve the efficiency of recycling.

Abstract: A wasted carpet and felt scrap recycling apparatus is provided. The waste carpet and felt scrap recycling apparatus includes a feeding unit that feeds a cut scrap while forming a feeding path and a supply unit that is connected to the feeding path and supplies the scrap that passed the feeding unit along the feeding path while pressing the scrap. A separation unit is spaced apart from the supply unit, and provides a frictional force to one surface of the scrap supplied from the supply unit through rotation of the supply unit and separates the scrap into fiber and recycled material.

Abstract: Disclosed are a sound absorbing and insulating material with improved heat resistance and moldability and a method for manufacturing the same. The sound absorbing and insulating material includes a heat-resistant material, as a surface layer, prepared by impregnating a binder into a nonwoven fabric formed of a heat-resistant fiber and a base layer formed of a conventional sound absorbing and insulating material and the surface layer is stacked on one side of the base layer. The sound absorbing and insulating material of the present invention can have improved sound-absorbing property, flame retardancy, heat-insulating property and heat resistance as compared to the conventional sound absorbing and insulating material, is applicable to parts maintained at high temperatures of 200° C. or greater due to the surface layer and is moldable into a desired shape during the curing of the binder impregnated into the surface layer.

Abstract: An apparatus for blending a polyethylene terephthalate (PET) and a kapok fiber using static electricity is provided, along with a method for blending the PET fiber and the kapok fiber using the apparatus. The fiber blending apparatus includes a fiber blending chamber having an inlet in which the PET fiber and the kapok fiber are introduced and an outlet from which a nonwoven fabric is discharged. A discharge plate is positioned at an upper side and a lower side based on a center line passing through the center of a cross section of the fiber blending chamber to accumulate the static electricity. The PET fiber and the kapok fiber contacting the discharge plate are electrically charged and are thus uniformly distributed and blended around the center line and stacked around an outlet.

Abstract: Disclosed is a noise-absorbent fabric having a superior heat-insulation property and sound-insulating property and a method for manufacturing the same. The noise-absorbent fabric includes a noise-absorbing layer comprising a nonwoven fabric formed of a heat-resistant fiber and impregnated with a binder; and a metal film stacked thereon. As such, the noise-absorbent fabric having superior sound-absorbing property, heat-insulating property and sound-insulating property can be obtained and be applicable to parts maintained at high temperatures of 300° C. or greater. In addition, the noise-absorbent fabric can be moldable using the binder in a desired three-dimensional shape.

Abstract: Provided are an artificial leather and a method of manufacturing the same. The artificial leather includes: a base fabric; a polyvinyl chloride film bonded to a surface of the base fabric; bonding layer formed on a surface of the film; a first foam layer formed on the bonding layer in a patterned shape; a first color layer formed on a surface of the foam layer and having the same pattern as the first foam layer; and a surface treatment layer formed on a surface of the first color layer with the same pattern as the first color layer or formed on a surface of the bonding layer without the first foam layer and the surface of the first color layer. to the artificial leather of the present invention may have a light weight and implement various three-dimensional patterns and colors as compared with a conventional PVC foam artificial leather.

Abstract: The present invention relates to a sound absorbing and insulating material with improved heat resistance and moldability and a method for manufacturing the same, more particularly to a sound absorbing and insulating material having, as a surface layer, a heat-resistant material prepared by impregnating a binder into a nonwoven fabric formed of a heat-resistant fiber stacked on one side of a base layer formed of a conventional sound absorbing and insulating material, and a method for manufacturing the same. The sound absorbing and insulating material of the present invention is a conventional sound absorbing and insulating material has improved sound-absorbing property, flame retardancy, heat-insulating property and heat resistance as compared to the conventional sound absorbing and insulating material, is applicable to parts maintained at high temperatures of 200° C. or higher due to the surface layer and is moldable into a desired shape during the curing of the binder impregnated into the surface layer.

Abstract: Disclosed is a fiber structure including a halogen-free polymer layer such as a styrenic block (SBC) copolymer. The fiber structure has environmentally-friendly properties and reduced weight, as compared to conventional materials such as PVC and has improved low temperature stability, fixing ability and resistance to deformation.

Abstract: Disclosed is a method for manufacturing a soundproofing board part having improved sound absorption performance. The soundproofing board part is manufactured by using, as a material, a recycled soundproofing material which contains a polyurethane foam having excellent sound absorption performance and impact resilience during the press molding; and by producing a sound absorption part on the back surface of the soundproofing board part through a remolding processing method. Also disclosed is a soundproofing board part manufactured by the method. Accordingly, sound absorption performance of the soundproofing board part is improved by about 20% or greater, manufacturing cost thereof may be reduced by recycled resources utilizing waste sheets, and manufacturing process may be simplified compared the related art.

Abstract: The present invention provides a multilayer dash isolation pad having superior formability and sound absorption performance. The multilayer dash isolation pad includes a decoupler and a sound absorption and insulation layer. The decoupler is a soft felt manufactured from urethane foam or octalobal cross-section fiber, and the sound absorption and insulation layer includes a compressed felt manufactured from octalobal cross-section fibers. In particular, the shape factor (?) of the octalobal cross-section fiber is 2.0 to 2.7. Particularly, the multilayer dash isolation pad according to the present invention does not decrease thickness or be contracted upon press molding after pre-heating felt, such that superior formability in components can be obtained and a sound absorption coefficient may be enhanced without increase in the weights and thicknesses of the decoupler and the sound absorption and insulation layer.

Abstract: Disclosed is a noise-absorbent fabric having a superior heat-insulation property and sound-insulating property and a method for manufacturing the same. The noise-absorbent fabric includes a noise-absorbing layer comprising a nonwoven fabric formed of a heat-resistant fiber and impregnated with a binder; and a metal film stacked thereon. As such, the noise-absorbent fabric having superior sound-absorbing property, heat-insulating property and sound-insulating property can be obtained and be applicable to parts maintained at high temperatures of 300° C. or greater. In addition, the noise-absorbent fabric can be moldable using the binder in a desired three-dimensional shape.

Abstract: The present invention provides a multilayer dash isolation pad having superior formability and sound absorption performance. The multilayer dash isolation pad includes a decoupler and a sound absorption and insulation layer. The decoupler is a soft felt manufactured from urethane foam or octalobal cross-section fiber, and the sound absorption and insulation layer includes a compressed felt manufactured from octalobal cross-section fibers. In particular, the shape factor (a) of the octalobal cross-section fiber is 2.0 to 2.7. Particularly, the multilayer dash isolation pad according to the present invention does not decrease thickness or be contracted upon press molding after pre-heating felt, such that superior formability in components can be obtained and a sound absorption coefficient may be enhanced without increase in the weights and thicknesses of the decoupler and the sound absorption and insulation layer.

Abstract: The present invention relates to a sound absorbing and insulating material with improved heat resistance and moldability and a method for manufacturing the same, more particularly to a sound absorbing and insulating material having, as a surface layer, a heat-resistant material prepared by impregnating a binder into a nonwoven fabric formed of a heat-resistant fiber stacked on one side of a base layer formed of a conventional sound absorbing and insulating material, and a method for manufacturing the same. The sound absorbing and insulating material of the present invention is a conventional sound absorbing and insulating material has improved sound-absorbing property, flame retardancy, heat-insulating property and heat resistance as compared to the conventional sound absorbing and insulating material, is applicable to parts maintained at high temperatures of 200° C. or higher due to the surface layer and is moldable into a desired shape during the curing of the binder impregnated into the surface layer.

Abstract: A wasted carpet and felt scrap recycling apparatus is provided. The waste carpet and felt scrap recycling apparatus includes a feeding unit that feeds a cut scrap while forming a feeding path and a supply unit that is connected to the feeding path and supplies the scrap that passed the feeding unit along the feeding path while pressing the scrap. A separation unit is spaced apart from the supply unit, and provides a frictional force to one surface of the scrap supplied from the supply unit through rotation of the supply unit and separates the scrap into fiber and recycled material.

Abstract: Disclosed are a sound-absorbing material with improved sound-absorbing performance and a method for manufacturing the sound-absorbing material. The sound-absorbing material may improve sound absorption coefficient and transmission loss by forming large surface area and air layer, so as to induce viscosity loss of incident sound energy, and may provide light-weight design of a sound absorbing part or material since sound-absorbing performance may be substantially improved using reduced amount of fiber. Further, the sound-absorbing material may improve sound-absorbing performance by using binder fiber having rebound resilience, so as to maintain enough strength between fibers and also to maximize viscosity loss of sound energy transmitted to fiber structure.

Abstract: An apparatus for blending a polyethylene terephthalate (PET) and a kapok fiber using static electricity is provided, along with a method for blending the PET fiber and the kapok fiber using the apparatus. The fiber blending apparatus includes a fiber blending chamber having an inlet in which the PET fiber and the kapok fiber are introduced and an outlet from which a nonwoven fabric is discharged. A discharge plate is positioned at an upper side and a lower side based on a center line passing through the center of a cross section of the fiber blending chamber to accumulate the static electricity. The PET fiber and the kapok fiber contacting the discharge plate are electrically charged and are thus uniformly distributed and blended around the center line and stacked around an outlet.

Abstract: Disclosed are a sound absorbing and insulating material with improved heat resistance and moldability and a method for manufacturing the same. The sound absorbing and insulating material includes a heat-resistant material, as a surface layer, prepared by impregnating a binder into a nonwoven fabric formed of a heat-resistant fiber and a base layer formed of a conventional sound absorbing and insulating material and the surface layer is stacked on one side of the base layer. The sound absorbing and insulating material of the present invention can have improved sound-absorbing property, flame retardancy, heat-insulating property and heat resistance as compared to the conventional sound absorbing and insulating material, is applicable to parts maintained at high temperatures of 200 ° C. or greater due to the surface layer and is moldable into a desired shape during the curing of the binder impregnated into the surface layer.

Abstract: A method of recycling a composite container for a high-pressure gas is carried out so as to recover carbon fibers in a long fiber state, using a recovering apparatus that can separate the inner and outer containers of a composite container for a high-pressure gas such as a hydrogen tank and take carbon fibers out of the outer container without cutting it in order to recycle the composite container, in order to increase the degree of recovery of carbon fibers and improve the efficiency of recycling.