baber/WOPTO huggingface dataset:
Patent KR-20120012402-A (KR)
Title: Mounting apparatus
Inventor: SAKUMA TAKUMI
IPC: H05K3/34
Filed: 2011-07-25
Abstract: PURPOSE: A mounter is provided to reduce amplitude of a head unit in a vibration generating process according to a reduction in a distance, thereby improving mounting location accuracy. CONSTITUTION: A mounter(100) comprises a guide part(43) for guiding a first head unit(41) and an actuator(45) which transfers the heat unit along a predetermined direction. The guide part is attached on the lower surface of a supporting part(1c) which comprises a structure. The guide unit guides the head unit transferred along the predetermined direction. The first head unit mounts a chip component supplied by a tape feeder on a print substrate. The first head unit mounts a bare chip drawn from a wafer on the print substrate. The actuator transfers the first head unit to a Y-direction. An X frame(46) transfers the first head unit to an X-direction.
Patent KR-20130012380-A (KR)
Title: Research and development project evaluation apparatus and method
Inventor: PARK CHANG KIRL
IPC: G06Q10/06
Filed: 2011-07-25
Abstract: PURPOSE: An R&D assignment evaluation device and a method thereof are provided to guarantee the objectivity of an evaluation standard by automatically evaluating industry, product applicability, and technology about an evaluation target assignment based on a predetermined standard. CONSTITUTION: An industry evaluation unit(120) calculates one or more predetermined indexes related to industry about evaluation target assignment. The industry evaluation unit calculates an industry score about the evaluation target assignment. A product applicability evaluation unit(130) calculates a product applicability score about the evaluation target assignment based on a performance subject of the evaluation target assignment. [Reference numerals] (120) Industry evaluation unit; (121) Added-value increment estimation unit; (122) Stock estimation unit; (123) Industry score calculating unit; (130) Product applicability evaluation unit; (140) Technology evaluation unit; (150) Database; (151) Keyword receiving unit; (152) Technical literature searching unit; (153) Technology score calculating unit; (154) Weighted value setting unit; (155) Unit for extracting the number of being quoted; (160) Task evaluation unit
Patent KR-20130013291-A (KR)
Title: Outer socks with tight contact system
Inventor: GIM JAE DONG
IPC: A41B11/00
Filed: 2011-07-28
Abstract: PURPOSE: Outer socks are provided to have a tight fit part in the inner side of the heel part in order to have a stable wearing feeling, and to prevent socks from being taken off in walking. CONSTITUTION: A toe part(20) has an opening(10) on top and wraps toes. A side part(30) covers the circumference of foot. A heel part(40) wraps the heel. Silicone bands(51) are formed horizontally with a constant interval in the inner side of the heel part, and has a relatively broad width. A tight fit part(50) has multiple lines in which relatively narrow spacing(52) is repeated. The width of the silicone band is 5 mm. The width of the spacing is 3 mm. Multiple silicon pieces are formed with a constant interval from the inner top end in a side part to the inner top end of the toe part.
Patent KR-20130013617-A (KR)
Title: Furnace for rolling mill
Inventor: LIM GAP SOO
IPC: F27B9/39
Filed: 2011-07-28
Abstract: PURPOSE: A furnace for a rolling mill is provided to save time and cost for removal of iron oxide and to conduct a stable heating process by smoothly circulating air in the inside of the furnace because the iron oxides does not accumulated in a main body of the furnace. CONSTITUTION: A furnace for a rolling mill comprises a main body(30), a moving unit(30), and an opening and closing unit(32). An outflow hole unit(16) is comprised in the main body. The moving unit moves foreign materials piled on the bottom side of the main body to the outflow unit. The opening and closing unit is installed at the outflow hole.
Patent KR-20130016511-A (KR)
Inventor: KIM MYUNG GON
IPC: C04B33/04
Filed: 2011-08-08
Abstract: 본 발명은 운모 미세가공분말과 음이온석 미세가공분말을 특수 열처리하여 원적외선 방사, 음이온 방출, 항균, 탈취, 보온, 자외선 차단 등의 여러가지 기능을 발휘하는 다기능성 바이오 이온물질 제조방법 및 이에 의하여 제되는 다기능성 바이오 이온물질에 관한 것으로서, 본 발명에 따른 다기능성 바이오 이온물질 제조방법은 1) 900 내지 1100 메쉬(Mesh)의 운모 미세가공분말을 준비하는 단계; 2) 900 내지 1100 메쉬의 음이온석 미세가공분말을 준비하는 단계; 3) 상기 운모 미세가공분말과 상기 음이온석 미세가공분말을 혼합하고 소성로에서 열처리하는 단계;를 포함한다.
Patent KR-20130016960-A (KR)
Inventor: CHOI SUNG JUN
IPC: E01F8/00
Filed: 2011-08-09
Abstract: 본 발명은 서로 다른 면적을 갖는 2개의 H형강을 크로스 접합시켜 접합 이음부가 길어져 접합 강도를 향상시키고, 지주 하단을 콘크리트와 합성시켜 풍하중에 저항하는 휨 강성을 일층 증대시킬 수 있도록 한 서로 다른 단면 면적으로 접합되어 있는 슬림 지주 및 이의 시공 방법을 제공하기 위한 것으로, 본 발명의 적절한 실시 형태에 따른 슬림 지주는, 방음벽 기초콘크리트에 입설되는 일정 길이의 제1 H형강 지주와; 상기 제1 H형강 지주보다 상대적으로 작은 단면을 갖고 제1 H형강 지주의 상단에 접합된 제2 H형강 지주를 구비하되; 상기 제2 H형강 지주의 하단을 일부 절단 제거시켜 일측 플랜지에 타측 플랜지보다 일정 구간이 길어진 접속 단부가 형성되고, 접속 단부의 중앙에 길이 방향으로 절개된 웨브 끼움용 슬릿이 형성되고; 상기 웨브 끼움용 슬릿이 제1 H형강 지주의 상부측 웨브에 끼움된 후 제1 H형강 지주와 제2 H형강 지주의 상호 접합면이 용접으로 접합된 구조를 갖는 것을 특징으로 한다.
Patent KR-20120057498-A (KR)
Inventor: KIM YOUNG HOON
IPC: G09G3/20
Filed: 2011-08-10
Abstract: PURPOSE: An image display device and a driving method thereof are provided to apply a plurality of gains respectively corresponded to a plurality of pixels, thereby improving image quality and brightness. CONSTITUTION: A display panel(120) displays an image. A color conversion part(150) creates a modulation image signal with respect to red, green, blue, and auxiliary primary color using a single gain among a plurality of gains. A data signal supply part(160) creates a data signal from the modulation image signal. The data signal supply part supplies the data signal to the display panel.
Patent KR-20130017521-A (KR)
Title: Vo2 laminate with graphene for smart window and method the same
Inventor: YANG WOO SEOK
IPC: B32B9/00
Filed: 2011-08-11
Abstract: PURPOSE: A manufacturing method of a graphene based VO2 laminated body is provided to improve the characteristics and the efficiency of a thermo-chromic glass (smart window); and solve problems generated in case of the direct coating of a traditional vanadium dioxide on a circuit board. CONSTITUTION: A graphene based VO2 laminated body for the smart window comprises a grapheme layer(110) equipped with at least one or more of deposits; and a vanadium dioxide layer(130) which is formed on a side of a grapheme layer. The hexagonal boron nitride(150) is formed in between the graphene layer and the vanadium dioxide layer. A protection layer is one or more species selected among PMMA(Poly methyl methacrylate), a PVDF(polyvinylidene fluoride) copolymer, polystyrene(PS)-co-PMMA-co-PS, a PR(photoresist), an ER(electronresist), SiOx and AlOx. A grapheme layer is transferred or attached on the flexible base material(P). The flexible base material is an adhesive tape, glue, epoxy resin, light softening tape, heat peelable tape or water soluble tape. A graphene based VO2 laminated body for smart window forms the grapheme layer growing a graphene on the first item; forms the vanadium dioxide layer depositing the vanadium dioxide on the top of a graphene layer; forms the laminated body which includes the first item-the graphene layer, and the second item-the vanadium dioxide by laminating the second item; and produces the grapheme layer by transferring on the second item while the first item is removed from the laminated body using an etching method.
Patent KR-20130019508-A (KR)
Title: Anti tailgate rattle system
Inventor: KIM DO WON
IPC: B62D25/10
Filed: 2011-08-17
Abstract: PURPOSE: A flow preventing device of a tailgate of a vehicle is provided to prevent a noise according to a flow of a tailgate by securely catching the flow of a right and a left direction when driving. CONSTITUTION: A flow preventing device of a tailgate of a vehicle comprises a locking hole(20) and a containment device(30). The locking hole is penetrated into the lower part of the tail gate(10) of the vehicle toward the upper and the lower direction and is formed. The containment device is formed at a rear bumper back panel(22). The containment device is connected to the locking hole when driving, catches the flow of a right and a left direction. [Reference numerals] (36) Control unit; (37) Vehicle speed sensor
Patent KR-20130026160-A (KR)
Title: In＆out 볼륨 브라
Inventor: I DAE WON
IPC: A41C3/12
Filed: 2011-09-05
Abstract: 본 발명은 2개의 사이즈가 다른 입체적 몰드를 함께 연결하여 구성함으로서 가슴이 빈약한 여성들에게 충분한 볼륨감을 부여하는 것은 물론 볼륨감을 얻기 위하여 착용하던 기존의 볼륨 브래지어의 불편함을 없애고 편안한 착용감 과 동시에 유두 끝 부분 까지 가장 이상적인 유방모양의 입체적인 몰드형태를 사용 함 으로 유두의 눌림 없이 정확한 자신의 가슴 모양을 유지할 수 있으므로 가슴의 모양을 예쁘게 고정 할 수 있고, 본인의 가슴 사이즈에 맞는 브래지어 컵을 선택 함 으로써 모아주고 받쳐주어 젖가슴이 쳐지지 않도록 보정함과 동시에 가슴의 모양을 아름답게 교정 시키도록 구성된 것이 특징이다.
Patent KR-20130026189-A (KR)
Title: 3way valve
Inventor: KIM CHI MYUNG
IPC: F16K11/07
Filed: 2011-09-05
Abstract: PURPOSE: A three-way valve is provided to prevent the generation of noise by the gap tolerance by installing a plate spring on an inner gear inside an actuator. CONSTITUTION: A three-way valve includes a valve housing(10), an operation plunger(20), and an actuator(30). The valve hosing is formed with first and second inlet ports, and an outlet port(15). The operation plunger is connected to the outlet port, and is rotatably installed inside the housing for selectively opening and closing the inlet ports. The actuator is installed on the upper side of the valve housing for rotating the operation plunger, and includes a driving shaft(40), a driving motor(50), a gear unit, and an elastic member. The driving shaft has one end connected to the operation plunger, and provides rotary force to the driving shaft.
Patent KR-20130033514-A (KR)
Inventor: LEE TAHK GUHN
IPC: G06F17/30
Filed: 2011-09-15
Abstract: PURPOSE: A communication system is provided to build up a personal network based on people who have common interests, thereby making personal connections. CONSTITUTION: When a user of an arbitrary communication terminal(200) inputs a message by designing an opponent, the arbitrary communication terminal transmits service ID and a message of the opponent to a main server(100). The main server compares the service ID with push server registration ID, which are stored in a storage unit and transmits the push server registration ID corresponding to the service ID of the opponent to a push server(150) with the message. The push server pushes the message to the opponent by using the push server registration ID.
Patent KR-20120117616-A (KR)
Inventor: KWON O MI
IPC: G02B6/48
Filed: 2011-09-16
Abstract: 광케이블 절단기는 하우징부와, 스토퍼와, 절단부재, 및 동력전달수단을 포함한다.  하우징부는 외부로부터 인가되는 동력에 의하여 서로 접촉 또는 이격되도록 종방향으로 병진운동되는 상단하우징 및 하단하우징, 상단하우징 저면의 일부분에 상단하우징의 길이방향으로 관통하여 형성되는 절단부재 인출홈, 하단하우징 상면의 일부분에 하단하우징의 길이방향으로 관통하여 형성되는 절단부재 삽입홈, 하단하우징의 정면과 후면을 관통하여 형성되어 광케이블을 삽입시키는 하나 또는 그 이상의 광케이블 삽입구를 포함한다. 스토퍼는 일단에 형성된 걸림돌기가 하단하우징의 내부에 이동가능하도록 삽입되고, 나머지 타단은 상단하우징에 고정됨으로써, 상단하우징 및 하단하우징의 병진운동을 안내하고 상호 이격거리를 제한한다.  절단부재는 상단하우징의 내부에 상단하우징의 길이방향으로 설치되고, 칼날이 형성된 하단부가 절단부재 인출홈을 통하여 상단하우징의 외부로 노출되며, 상단하우징과 하단하우징의 접촉시 절단부재 삽입홈에 하단부가 삽입된다.  동력전달수단은 절단부재 및 상단하우징 및 하단하우징에 설치되고, 상단하우징 및 하단하우징에 인가된 외부동력을 절단부재에 전달하여 절단부재를 횡방향으로 병진운동시킨다.
Patent KR-20130039001-A (KR)
Title: Pantagraph for electric rail car
Inventor: MOON KWANG SOON
IPC: B60L5/20
Filed: 2011-10-11
Abstract: PURPOSE: A pantograph for an electric train is provided to stably collect power by improving a contact property between a contact wire and a collecting roller with a rolling and sliding structure. CONSTITUTION: A shaft is mounted on an upper frame(14) in a width direction of an electric train(2). Both ends of the shaft are fixed to a bracket(14a) of the upper frame. A collecting roller(30) collects power from a contact wire(4). A convex surface which is contacted with the contact wire with a rolling and sliding method is formed on the outer side of the collecting roller. A pair of brushes output the power collected by the collecting roller.
Patent KR-20130039605-A (KR)
Title: 수치지도의 편집시스템
Inventor: SUNG CHUN KYOUNG
IPC: G06T11/60
Filed: 2011-10-12
Abstract: 본 발명은 수치지도의 편집시스템에 관한 것으로, 더욱 상세하게는, 먼저 작성되어 있는 수치지도의 정확성을 확보하기 위하여 수치지도를 편집하기 위한 수치지도의 편집시스템에 관한 것이다. 
본 발명에 따르면, 현장조사 지역 선정부에서 안내하는 현장조사 지역에 대해서만 현장조사를 수행하여도, 시간적 경제적 소모 없이 수치지도의 신뢰성 및 정확도를 향상시킬 수 있을 뿐만 아니라, 수치지도상에서 폴리곤에 워터마크를 삽입함으로써 위조를 방지할 수 있다.
Patent KR-20120139521-A (KR)
Title: Chemical vapor deposition apparatus
Inventor: LIU HENG
IPC: H01L21/205
Filed: 2011-10-18
Abstract: PURPOSE: A chemical vapor depositing apparatus is provided to reduce operation costs by reducing an amount of ammonia in an MOCVD. CONSTITUTION: A susceptor component rotates around a central axis. A shower head component(110) is located on the susceptor component and is not directly contacted with the susceptor component. A substrate holder(130) is located on the susceptor component. A substrate holder rotates around the central axis and a corresponding holder axis. A central component(150) includes a first inlet, a second inlet, and a third inlet. The third inlet is formed in the shower head component and is further than the second inlet from the central component.
Patent KR-20130046594-A (KR)
Title: Chute for belt conveyor
Inventor: LEE TAE YEON
IPC: B65G47/52
Filed: 2011-10-28
Abstract: PURPOSE: A chute for a belt conveyor is provided to prevent the swerving of a return belt because the rotation angle of a guide part is changed according to the swerving extent of the return belt to relieve the uneven loading of a transfer belt. CONSTITUTION: A chute for a belt conveyor comprises a duct part(10), a guide part(20), and an operation part(30). The duct part is arranged at the end of a first belt conveyor and guides transferred objects dropped from the first belt conveyor to a second belt conveyor. The guide part is mounted on the duct part and controls the dropped position of the transferred objects. The operation part is connected to the guide part and rotates the guide part while being pushed by a return belt of the second belt conveyor.
Patent KR-20130046924-A (KR)
Inventor: MOON JOON OH
IPC: C22C38/04
Filed: 2011-10-28
Abstract: PURPOSE: A method for manufacturing a hot-rolled steel sheet for a pipe is provided to reduce the lateral deviation of materials. CONSTITUTION: A method for manufacturing a hot-rolled steel sheet for a pipe hot rolls steel slabs after the steel slabs are reheated at 1100-1200 degrees C. Both sides of the steel sheet are partially heated at a finishing rolling inlet to have laterally uniform temperature distribution at a finishing rolling outlet. [Reference numerals] (AA) Warpage, mm; (BB) Failure; (CC) Success; (DD) Rising FDT and CT; (EE) Strain rate(Pipe making speed)
Patent KR-20130053856-A (KR)
Title: Wireless power receiver and method for controlling thereof
Inventor: KIM JOON IL
IPC: H02J17/00
Filed: 2011-11-16
Abstract: PURPOSE: A wireless power receiver and a communication signal and a control method thereof are provided to execute communication through a wireless power receiver by omitting additional communication modules. CONSTITUTION: A control unit(240) determines wireless power from a wireless power supplier. A load unit(230) stores the wireless power. When the wireless power is received, a switch unit(220) divides power rates including the communication signal and the wireless power based on the control unit. The switch unit individually transmits the divided power to the control unit and the load unit. [Reference numerals] (210) Communication unit; (220) Switching unit; (230) Load unit; (240) Control unit
Patent KR-20130062433-A (KR)
Title: User opinion extraction method using social network
Inventor: IN HOH PETER
IPC: G06Q50/00
Filed: 2011-11-18
Abstract: PURPOSE: A user requirement extraction method using a social network is provided to extract user requirements for being applied to developed software from transmitted and received SNS(Social Network Service) sentences between nodes in a social network group, easily extracting the user requirements. CONSTITUTION: An analysis module analyzes a structure of a social network for a social network group which is searched in a search module(S120). A collection module selects the social network group among searched social network groups and collects user requirements from transmitted and received SNS sentences between nodes in the selected social network group(S130,S140). An extraction module extracts one or more user requirements corresponding to influence order in the social network group(S160). [Reference numerals] (AA) Start; (BB) End; (S110) Search a social network group which has accessed to a site having a domain related to software to be developed; (S120) Analyze a network structure for the searched social network group; (S130) Select the social network group for extracting user requirements based on an analyzed result; (S140) Collect the user requirements from SNS sentences transceiving between multiple nodes in the selected social network group; (S150) Calculate the impact in the social network group for the collected user requirements; (S160) Extract the user requirements corresponding to influence order among the collected user requirements
Patent KR-20130055481-A (KR)
Title: A method for tunable control of protein expression
Inventor: CHOI SOO KEUN
IPC: C12N15/63
Filed: 2011-11-18
Abstract: PURPOSE: A method for minutely regulating protein expression is provided to regulate expression pattern of the target protein using a vector comprising a promoter, a target protein-coding nucleotide sequence, and a random sequence, and to establish expression pattern of the target protein and relation of an introduced sequence. CONSTITUTION: A method for providing information of a triple random sequence for inserting a first sub-nucleotide and a second sub-nucleotide, which is able to regulate expression pattern of a target protein comprises: a step of preparing a vector containing a promoter, a target protein-coding nucleotide sequence, and the triple random sequence; a step of introducing the vector into a host cell; and a step of collecting 1:1 relation of expression pattern of the target protein produced from the host cell and the triple random sequence.
Patent KR-20130056485-A (KR)
Title: Image sensor
Inventor: SA SEUNG HOON
IPC: H01L27/146
Filed: 2011-11-22
Abstract: PURPOSE: An image sensor is provided to improve the efficiency of incident light by using an antireflection pattern. CONSTITUTION: A photodiode(PD) is arranged on a semiconductor substrate(10). Three interlayer dielectric layers(310,320,330) are formed on the semiconductor substrate. An antireflection pattern(500) with nitride is formed on the interlayer dielectric layer. An overcoating layer(600) is formed on the antireflection pattern. A color filter(700) is formed on the overcoating layer.
Patent KR-20130057198-A (KR)
Title: Door assembly for ship
Inventor: SEO YONG HO
IPC: B63B19/00
Filed: 2011-11-23
Abstract: PURPOSE: A door assembly for a ship is provided to easily lock by rotating a locking part inside a hull, thereby safely taking shelter from pirates. CONSTITUTION: A door assembly(100) for a ship comprises a door(110), a coaming part(120), a shaft part(130), and a locking part(140). The door opens and closes a hull having an opening hole and comprises an inside surface(111), an outside surface(115), and a through-hole(113) penetrating the inside and outside surfaces. The coaming part is arranged in the outside surface and is protruded from the circumference of the through hole. One end of the shaft part is rotationally connected to the through-hole. One end of the shaft part is protruded from the inside surface, and the other end thereof is protruded from the outside surface. The locking part is connected to one end of the shaft part to be latched to the hull according to the rotation of the shaft part.
Patent KR-20130058951-A (KR)
Title: Biaxial stretched polyester film for optical application and the preparing method thereof
Inventor: SEO JUNG TAI
IPC: B32B27/06
Filed: 2011-11-28
Abstract: PURPOSE: A biaxially stretched polyester film is provided to have excellent adhesion to a substrate without damaging transparency and transmittance of the polyester film and to have excellent adhesion for a post process. CONSTITUTION: A biaxially stretched polyester film comprises a biaxially elongated polyester substrate film; an adhesive primer layer on one side of the polyester substrate film; a binder resin on the opposite side of the polyester substrate resin; a surfactant; an organic binder; and a hardener. The laminated structure is formed by elongating the laminated structure. The polyester substrate film is spread with an adhesive layer which includes two or more resins on one or both sides thereof. An aqueous or water-dispersible resin used for the adhesive layer is selected from an aqueous polyurethane resin, aqueous polyester resin, and aqueous acryl resin.
Patent KR-20130060035-A (KR)
Title: Photosensitive resin composition for color filter and color filter prepared using the same
Inventor: CHO SANG WON
IPC: G02B5/20
Filed: 2011-11-29
Abstract: PURPOSE: A photo-sensitive resin composition for a color filter and a color filter manufactured using the same are provided to improve aperture ratio and brightness based on superior heat resistance property and spectral property. CONSTITUTION: A photo-sensitive resin composition for a color filter includes a coloring agent containing a phthalocyanine-based compound represented by chemical formula 1 and a triarylmethane-based compound represented by chemical formula 2. The coloring agent contains the phthalocyanine-based compound and the triarylmethane-based compound at the weight ratio of 1:1 to 1:10. The composition further includes an alkali soluble resin, a photopolymerizable monomer, a photopolymerization initiator, and a solvent. A color filter is manufactured using the composition.
Patent KR-20130062718-A (KR)
Title: Raincoat
Inventor: JOUNG JIN GU
IPC: A41D3/04
Filed: 2011-12-05
Abstract: PURPOSE: A raincoat is provided to be finished wearing by using C-shaped clips to put the raincoat on parts of a body, arms, and legs. CONSTITUTION: A body unit is formed as one piece by being united with a top and bottoms, and divided into a top unit(111) and a bottoms unit(112). The clips are formed with an alphabet C shape, composed of a highly elastic material, and installed on either the inside or the outside of the body unit and the support unit.
Patent KR-20130063081-A (KR)
Inventor: KIM TAE WON
IPC: B01D53/96
Filed: 2011-12-06
Abstract: 본 발명은 니트로글리세린(Nitroglycerin) 제조 고정중 발생하는 고농도 질소산화물(NOx)의 처리방법 및 처리장치에 관한 것으로, 더욱 구체적으로는 스크러버와 선택적촉매환원법(Selective Catalytic Reduction, SCR)의 하이브리드 시스템을 적용하여 10,000 ppm 이상의 고농도 질소산화물(NOx)을 처리하는 처리방법 및 처리장치에 관한 것이다. 
즉, 본 발명은 탈질성능을 높이기 위해 흡수탑을 통해 1차적으로 질소산화물(NOx)의 농도를 낮추고, 2차로 직렬로 연결된 두개의 탈질 반응기를 통과시켜 나머지 질소산화물을 처리함으로써, 기존의 시스템으로는 처리가 불가능한 고농도의 질소산화물을 처리할 수 있는 장점이 있다.  
또한, 흡수탑에서 질소산화물(NOx)은 순환수가 계속 순환되면서 흡수되어 질산으로 변환되어 공정에서 재사용할 수 있어 운전비용을 절감할 수 있으며, 탈질 반응기의 크기도 줄일 수 있어 투자비 및 환원제 사용 절감 등의 장점도 가지는 고농도 질소산화물(NOx)의 탈질방법 및 장치를 그 목적으로 한다.
Patent KR-20120127174-A (KR)
Title: Sheet for laundry
IPC: C11D17/06
Filed: 2011-12-09
Abstract: PURPOSE: A laundry sheet is provided to not need to be removed after laundry, to have excellent cleaning performance, to be easily used and to have storage stability by having excellent solubility to water. CONSTITUTION: A laundry sheet is manufactured by using polyvinylalcohol or polyvinylalcohol-based copolymer and contains a surfactant. The surfactant comprises C8-18 alkylsulfate alkali metal salt. The alkylsulfate alkali metal salt is sodium laurylsulfate. The total content of the surfactant is 40-70 weight% based on the total weight of the sheet. The total content of the polyvinylalcohol or polyvinylalcohol-based copolymer is 30-50 weight5 based on the total weight of the sheet. [Reference numerals] (AA) Good; (BB) Minimum