Abstract: The present invention relates to a press-heating gas grafting hydrophobization apparatus, and a hot water-resistant paper and an oil-absorbing paper manufactured using the press-heating gas grafting hydrophobization apparatus. In the press-heating gas grafting hydrophobization apparatus according to the present invention, since a non-air-permeable dryer belt is provided surrounding and pressing a drying roller to prevent dissipation from a base material of a fatty acid chloride vaporized by the drying roller, the press-heating gas grafting hydrophobization apparatus has an advantage of improving efficiency of a gas grafting reaction. Therefore, by using the press-heating gas grafting hydrophobization apparatus according to the present invention, the reaction amount of fatty acid chloride per unit area can be remarkably improved.

Abstract: The present invention relates to a press-heating gas grafting hydrophobization apparatus, and a hot water-resistant paper and an oil-absorbing paper manufactured using the press-heating gas grafting hydrophobization apparatus. In the press-heating gas grafting hydrophobization apparatus according to the present invention, since a non-air-permeable dryer belt is provided surrounding and pressing a drying roller to prevent dissipation from a base material of a fatty acid chloride vaporized by the drying roller, the press-heating gas grafting hydrophobization apparatus has an advantage of improving efficiency of a gas grafting reaction. Therefore, by using the press-heating gas grafting hydrophobization apparatus according to the present invention, the reaction amount of fatty acid chloride per unit area can be remarkably improved.

Abstract: Disclosed are a sorbent produced by recycling waste paper, which is an eco-friendly recycling paper resource, to adsorb and remove a marine spilled oil and other types of oil and a method of producing the same. The oil sorbent is produced by hydrophobizing a biomass material such as waste paper using a gas-grafting method. Compared to the oil sorbent of the prior art formed of synthetic resin, it is possible to provide excellent oil adsorption selectivity, a high oil adsorption rate, and a low water absorption rate. Therefore, an incineration process for processing the waste oil sorbent after use is easy advantageously. The oil sorbent generates less harmful substances during combustion because the eco-friendly material is used. Since a biomass material is hydrophobized using vegetable fatty acids, decomposition is performed fast within a short time in a landfill process, and there is no risk of environmental pollution.

Abstract: Using the sympathetic printed-matter according to the present invention, a hidden content can be visualized just by wetting. Therefore, it is possible to remove necessities of the sympathetic ink and a special material such as reagent or equipment for visualizing hidden contents. In addition, since the hidden contents disappear by removing water from the sympathetic printed-matter, the sympathetic printed-matter can be used repeatedly. Using the reading confirmation portion, whether or not the sympathetic printed-matter has been read by any other person can be easily determined. In the sympathetic printing method according to the present invention, a hydrophobic substrate can be formed using an existing gas grafting facility, and an ester hydrolase composition and the reading confirmation portion can be formed using an existing printing method. Therefore, a large amount of sympathetic printed-matters can be produced inexpensively and efficiently.

Abstract: Using the sympathetic printed-matter according to the present invention, a hidden content can be visualized just by wetting. Therefore, it is possible to remove necessities of the sympathetic ink and a special material such as reagent or equipment for visualizing hidden contents. In addition, since the hidden contents disappear by removing water from the sympathetic printed-matter, the sympathetic printed-matter can be used repeatedly. Using the reading confirmation portion, whether or not the sympathetic printed-matter has been read by any other person can be easily determined. In the sympathetic printing method according to the present invention, a hydrophobic substrate can be formed using an existing gas grafting facility, and an ester hydrolase composition and the reading confirmation portion can be formed using an existing printing method. Therefore, a large amount of sympathetic printed-matters can be produced inexpensively and efficiently.

Abstract: A detachable electronic device includes a tablet computer and a peripheral apparatus where the tablet computer is detachably disposed. The detachable electronic device may include a connection apparatus disposed in the peripheral apparatus, the connection apparatus to which the tablet computer is detachably mounted; wherein the connection apparatus may include a base rotatably disposed in the peripheral apparatus; a male connector disposed in the base; a supporting member disposed below the male connector and elastically supporting the male connector upwardly; and a pair of hooks disposed at opposite sides of the male connector in the base, and wherein the tablet computer may include a female connector disposed in a side surface of the tablet computer and to be connected to the male connector; and a pair of push-push latches disposed to be coupled to the pair of hooks at opposite sides of the female connector.

Abstract: An electronic apparatus includes first and second device units, at least one hinge assembly configured to pivotally connect the second device unit to the first device unit and including a plurality of shaft members, and a plurality of cover units mounted on the at least one hinge assembly to hide the at least one hinge assembly. Each of the cover units includes a first cover member to hide a first side of the at least one hinge assembly and a second cover member to hide a second side of the at least one hinge assembly, a second cover member of each of the cover units is partially overlapped with an adjacent second cover member while the first and second device unit are folded, and a relative position of second cover members is changed according to an angle at which the first and second device units are unfolded.

Abstract: A detachable electronic device includes a tablet computer and a peripheral apparatus where the tablet computer is detachably disposed. The detachable electronic device may include a connection apparatus disposed in the peripheral apparatus, the connection apparatus to which the tablet computer is detachably mounted; wherein the connection apparatus may include a base rotatably disposed in the peripheral apparatus; a male connector disposed in the base; a supporting member disposed below the male connector and elastically supporting the male connector upwardly; and a pair of hooks disposed at opposite sides of the male connector in the base, and wherein the tablet computer may include a female connector disposed in a side surface of the tablet computer and to be connected to the male connector; and a pair of push-push latches disposed to be coupled to the pair of hooks at opposite sides of the female connector.

Abstract: An electronic apparatus includes first and second device units, at least one hinge assembly configured to pivotally connect the second device unit to the first device unit and including a plurality of shaft members, and a plurality of cover units mounted on the at least one hinge assembly to hide the at least one hinge assembly. Each of the cover units includes a first cover member to hide a first side of the at least one hinge assembly and a second cover member to hide a second side of the at least one hinge assembly, a second cover member of each of the cover units is partially overlapped with an adjacent second cover member while the first and second device unit are folded, and a relative position of second cover members is changed according to an angle at which the first and second device units are unfolded.

Abstract: A computer having a main casing, a first bracket mounted on the main casing and accommodating a first peripheral device, and a second bracket removably combined to the first bracket and accommodating a second peripheral device. With this configuration, the computer has a computer casing which is compact without blocking hardware components with respect to each other.

Abstract: A computer having a main casing, a first bracket mounted on the main casing and accommodating a first peripheral device, and a second bracket removably combined to the first bracket and accommodating a second peripheral device. With this configuration, the computer has a computer casing which is compact without blocking hardware components with respect to each other.