Abstract: Disclosed are an air mattress and an air mattress manufacturing device and method, which can reduce manufacturing costs, enhance the rigidity of the bottom plate, and shorten and automate the manufacturing process. The air mattress of the present invention comprises: a cushion portion, which has multiple air sacs, and which is formed from a first resin composition made from a mixture of a synthetic resin and a plasticizer, so as to have elasticity and flexibility; and a bottom plate, which is coupled with the cushion portion, and which is formed from a second resin composition made from a mixture of a synthetic resin, a plasticizer having less than or equal to 50% of the plasticizer mixed into the first resin composition, and a rigid material for enhancing the rigidity of the air mattress, and thus the manufacturing costs and the rigidity thereof can be enhanced.

Abstract: There are provided a method for chemical analysis and an apparatus for chemical analysis. The method for chemical analysis includes: dosing a targeted sample with ionizing gas; irradiating ion beams on the targeted sample; and analyzing the mass of fragment ions and molecular ions sputtered from the targeted sample by the collisional impact of the ion beams . The apparatus for chemical analysis includes: an ionizing gas doser that adds ionizing gas onto a targeted sample disposed in a vacuum chamber; an ion beam source that generates ion beams and irradiates them onto the targeted sample; and a mass spectrometer that analyzes the mass of fragment ions and molecular ions sputtered from the targeted sample by the collisional impact of the ion beams.

Abstract: Disclosed herein is a floor system for efficiently absorbing an impact applied to a floor. The floor system includes a first impact-absorbing material, and a second impact-absorbing material installed at an upper side of the first impact-absorbing material and having a higher density than that of the first impact-absorbing material.

Abstract: Disclosed herein is a floor sound-insulating type heating system in which a floor sound-insulating structure for reducing the transmission of an impact sound from upstairs to downstairs in an apartment complex and a dry floor heating structure are integrally formed with each other. The floor sound-insulating type heating system can achieve improvements in construction efficiency as well as sound insulation and heat insulation effects.

Abstract: It is provided a wood flooring having laminated wood and plastic layers symmetric to each other and method of manufacturing the same. The wood flooring has an upper layer including laminated wood, a core layer including plastic sheets manufactured by calendaring, and a lower layer including veneer board, the lower layer being made of the same material as the upper layer, which are piled up symmetrically in order to keep the balance between the upper layer and lower layer, and then integrated under a constant temperature and pressure to form a suitable layers made by wood and plastic, thereby providing natural feeling in surface and solving the problem of distortion according to the change of environment.

Abstract: Disclosed herein is a method for manufacturing a heating panel. The method comprises preparing upper and lower moulds corresponding to the upper and lower plates, injecting a plastic material into the moulds to produce semi-manufactured products of the upper and lower plates, and bonding the semi-manufactured products of the upper and lower plates to produce the heating panel. The heating panel comprises a uniform fluid pathway formed therein, and allows uniform flow of heating fluid. The heating panel is manufactured by injection molding, thereby preventing blockage of the heating panel to ensure uniform flow of heating fluid. In addition, since the upper and lower plates are formed to a uniform thickness by injection molding, the method of the present invention enables precise forming of the heating panel, thereby allowing a constant tolerance and high quality of the heating panel.

Abstract: Disclosed herein is a back-grooved laminate wood flooring in which a high pressure melamine laminate (HPL) is laminated on a waterproof plywood layer. The back-grooved laminate wood flooring comprises an upper HPL (20), an adhesive layer (40) and a waterproof plywood layer (10) wherein the upper HPL (20) includes a second core layer (25), a first core layer (23), a decorative paper layer (22) and a surface-protective paper layer (21) layered in this order from the bottom, the upper HPL (20) and waterproof plywood layer (10) are adhered to each other by the adhesive layer (40), and the waterproof plywood layer (10) is back grooved.

Abstract: Disclosed is a plate-shaped heating panel having connecting members fastened to each other by means of resin. The heating panel comprises upper and lower plates integrally formed to face each other so as to form an inner fluid pathway in which heating water flows, a plurality of connecting members, each symmetrically extending from the upper and lower plates toward the lower and upper plates, respectively, and connecting the upper and lower plates to each other, the plurality of connecting members forming the inner fluid pathway at an inside surface of the plate, and two fluid communication portions for supplying and discharging the heating water, wherein one or more connecting members adjacent to the fluid communication portions are punctured to form holes. The holes are filled with a melted plastic resin, and the integrated plastic resin is integrated with the connecting members by pressing.

Abstract: Disclosed herein is a floor sound-insulating type heating system in which a floor sound-insulating structure for reducing the transmission of an impact sound from upstairs to downstairs in an apartment complex and a dry floor heating structure are integrally formed with each other. The floor sound-insulating type heating system can achieve improvements in construction efficiency as well as sound insulation and heat insulation effects.

Abstract: Disclosed herein is a floor system for efficiently absorbing an impact applied to a floor. The floor system includes a first impact-absorbing material, and a second impact-absorbing material installed at an upper side of the first impact-absorbing material and having a higher density than that of the first impact-absorbing material.

Abstract: Disclosed herein is a plate-shaped heating panel having connecting members fastened to each other by means of bolts and nuts. The heating panel comprises upper and lower plates integrally formed to face each other so as to form an inner fluid pathway in which heating water flows, a plurality of connecting members, each symmetrically extending from the upper and lower plates toward the lower and upper plates, respectively, and connecting the upper and lower plates to each other, the inner fluid pathway formed inside of the plate by means of the plurality of connecting members, and two fluid communication portions for supplying and discharging the heating water, wherein one or more connecting members adjacent to the fluid communication portions are punctured such that punctured portions of the connecting members are fastened to each other by means of bolts and nuts.

Abstract: Disclosed herein is a back-grooved laminate wood flooring in which a high pressure melamine laminate (HPL) is laminated on a waterproof plywood layer. The back-grooved laminate wood flooring comprises an upper HPL (20), an adhesive layer (40) and a waterproof plywood layer (10) wherein the upper HPL (20) includes a second core layer (25), a first core layer (23), a decorative paper layer (22) and a surface-protective paper layer (21) layered in this order from the bottom, the upper HPL (20) and waterproof plywood layer (10) are adhered to each other by the adhesive layer (40), and the waterproof plywood layer (10) is back grooved.

Abstract: Disclosed herein is a heating system of floating floor structure including a heating panel with a circular or elliptical inner fluid pathway. The heating panel having the circular or elliptical inner fluid pathway overcomes limitation on pressure resistance, which is the problem of the convention heating panel having a hexagonal fluid pathway, thereby providing enhanced pressure resistance. Furthermore, a floating floor structure of the heating system enhances thermal efficiency, and effectively improves sound absorbing/dampening function in a floor of a building. Additionally, the floating floor structure is provided with inner spaces, which allow utility equipment, such as an electric wire or a pipe, to be easily established therein, thereby enabling an easy repair of the heating system and the utility equipment.

Abstract: Disclosed herein is a method for manufacturing a heating panel. The method comprises preparing upper and lower moulds corresponding to the upper and lower plates, injecting a plastic material into the moulds to produce semi-manufactured products of the upper and lower plates, and bonding the semi-manufactured products of the upper and lower plates to produce the heating panel. The heating panel comprises a uniform fluid pathway formed therein, and allows uniform flow of heating fluid. The heating panel is manufactured by injection molding, thereby preventing blockage of the heating panel to ensure uniform flow of heating fluid. In addition, since the upper and lower plates are formed to a uniform thickness by injection molding, the method of the present invention enables precise forming of the heating panel, thereby allowing a constant tolerance and high quality of the heating panel.

Abstract: An exemplary embodiment of the present invention provides a floor panel for a raised floor system, including an upper plate, a lower plate, a reinforcement frame of a polygonal shape disposed between the upper and lower plates, and at least one aluminum reinforcement member disposed in the polygonal shape of the reinforcement frame.

Abstract: Disclosed herein is a plate-shaped heating panel having connecting members fastened to each other by means of resin. The heating panel comprises upper and lower plates integrally formed to face each other so as to form an inner fluid pathway in which heating water flows, a plurality of connecting members, each symmetrically extending from the upper and lower plates toward the lower and upper plates, respectively, and connecting the upper and lower plates to each other, the inner fluid pathway formed at an inside of the plate by means of the plurality of connecting members, and two fluid communication portions for supplying and discharging the heating water, wherein one or more connecting members adjacent to the fluid communication portions are punctured to form holes. The holes are filled with a melted plastic resin, and the melted plastic resin is integrated with the connecting members by pressing.

Abstract: Disclosed herein is a plate-shaped heating panel having connecting members fastened to each other by means of bolts and nuts. The heating panel comprises upper and lower plates integrally formed to face each other so as to form an inner fluid pathway in which heating water flows, a plurality of connecting members, each symmetrically extending from the upper and lower plates toward the lower and upper plates, respectively, and connecting the upper and lower plates to each other, the inner fluid pathway formed inside of the plate by means of the plurality of connecting members, and two fluid communication portions for supplying and discharging the heating water, wherein one or more connecting members adjacent to the fluid communication portions are punctured such that punctured portions of the connecting members are fastened to each other by means of bolts and nuts.

Abstract: An access floors for reducing floor impact sound. The access floor system includes a plurality of supports disposed at regular intervals, and upper plates placed on the supports, each of the upper plates including an upper board, a lower board, and a quadrangular reinforcing frame disposed between the upper board and the lower board. By employing the high rigidity sandwich upper plate, the upper plate can be light and the interval between the supports can be widened in comparison with the conventional access floor system, so that the floor impact sound reduction effect is enhanced. Since sound absorbing material or head insulation material is inserted between the reinforcing members, the sound absorption performance or the heat insulation performance can be enhanced. More particularly, the floor impact sound in apartments is absorbed so that comfortable environment without noise can be realized.

Abstract: It is provided a wood flooring laminated wood and plastic layers symmetric to each other and method of manufacturing the same. The wood flooring has an upper layer including laminated wood, a core layer including plastic sheets manufactured by calendaring, and a lower layer including veneer board, the lower layer being made of the same material as the upper layer, which are piled up symmetrically in order to keep the balance between the upper layer and lower layer, and then integrated under a constant temperature and pressure to form a suitable layers made by wood and plastic, thereby providing natural feeling in surface and solving the problem of distortion according to the change of environment.

Abstract: Disclosed herein is a heating system of floating floor structure including a heating panel with a circular or elliptical inner fluid pathway. The heating panel having the circular or elliptical inner fluid pathway overcomes limitation on pressure resistance, which is the problem of the convention heating panel having a hexagonal fluid pathway, thereby providing enhanced pressure resistance. Furthermore, a floating floor structure of the heating system enhances thermal efficiency, and effectively improves sound absorbing/dampening function in a floor of a building. Additionally, the floating floor structure is provided with inner spaces, which allow utility equipment, such as an electric wire or a pipe, to be easily established therein, thereby enabling an easy repair of the heating system and the utility equipment.