baber/WOPTO huggingface dataset:
Patent KR-20010056601-A (KR)
Inventor: SONG BYEONG GEUN
IPC: F41H7/00
Filed: 1999-12-16
Abstract: PURPOSE: Side shields and a gun shield are simultaneously opened and closed as a hatch is opened and closed to protect a combatant taking charge of firearms against firearms of enemy from all directions. CONSTITUTION: Side shields and a gun shield comprise a hatch(20), a left side shield(26) and a right side shield(28) and a gun shield(38). The hatch(20) is installed on a rear side of a rotary frame(18) rotatably installed on the upper part of a turret shell(10) with a hinge(22) to be opened and closed. The left side shield(26) and the right side shield(28) are installed on the left side and the right side of the rotary frame(18) facing with each other with hinges, placed on the hatch(20) overlapping with each other to be interlocked with the opening and closing of the hatch(20) and has curved slide grooves guided with the opening and closing operation by slider balls installed on both ends of the hatch(20). The gun shield(38) is installed on the front side of the rotary frame(18) with a hinge(36), placed folded on the left side and right side shields(26, 28) to be interlocked with the opening and closing operation of the hatch(20) and has curved slide grooves guided with the opening and closing operation by slider balls installed on the left side and the right side shields(26, 28).
Patent KR-20000017827-A (KR)
Inventor: PARK JUN BAE
IPC: B44C1/16
Filed: 1999-12-20
Abstract: PURPOSE: A forming method of a multicolored pattern on a leather surface is provided to easily form a fine picture and a multicolored picture on the surface of leather without discoloring. CONSTITUTION: A multicolored pattern on the surface of leather is formed by the steps of: providing raw leather; manufacturing wet blue with the raw leather; dyeing the wet blue; painting a binder on the dyed wet blue; forming a picture with acrylic dyestuffs on the surface of the wet blue where the binder is painted; and painting a coating agent on the wet blue.
Patent KR-20010057260-A (KR)
Inventor: KIM GI UN
IPC: A61Q5/10
Filed: 1999-12-21
Abstract: PURPOSE: A hair dying agent composition by which allergy on the head skin is reduced, hair damage is prevented and remaining smell is easily removed after dyeing is provided, which improves dyeing effect, reduces dyeing time and improves dyeing stability. CONSTITUTION: This composition is obtained by dissolving a dye composition comprising 0.2 to 0.3 parts by weight of p-phenylenediamine, 0.07 to 0.13 parts by weight of o-aminophenol, 0.6 to 1.0 parts by weight of p-nitro-o-phenylenediamine, 0.07 to 0.13 parts by weight of p-aminophenol, 0.4 to 0.6 parts by weight of 2-amino-5-nitrophenol and 0.07 to 0.1 parts by weight of resorcin as an effective component, 6 to 10 parts by weight of a solvent, 9.5 to 13.5 parts by weight of a base material, 14 to 19 parts by weight of an emulsifier and 0.5 to 2.5 parts by weight of other additives in 55 to 66 parts by weight of purified water.
Patent KR-20010057289-A (KR)
Inventor: YOO BYEONG HUN
IPC: B60N2/90
Filed: 1999-12-21
Abstract: PURPOSE: A rear seat for a car offers a space to contain a long object like a ski through a trunk room and a room by forming an opening on a back of the rear seat set in the back of the car. CONSTITUTION: A rear seat comprises a cushion(12), a back(11) and an armrest(20). An opening(11a) is formed through the back(11), and a box(40) formed with a cup holder(30) and a collection part(41) is set to the back of the opening(11a). The rear seat is used by pulling out the box(40) formed with the armrest, the cup holder(30) and the collection part(41) according to the need of a passenger, and conveys the long object like a ski(70) by carrying it between the trunk room and the room through the opening. Therefore, the rear seat improves a usability for a car user.
Patent KR-20010062983-A (KR)
Inventor: CHO JUN SIK
IPC: G03F7/004
Filed: 1999-12-21
Abstract: PURPOSE: A photopolymerized photosensitive resin composition is provided which improves flatness of the surface of a pattern, thus consequently is excellent in coating and development and lowers spot generation. CONSTITUTION: The photopolymerized photosensitive resin composition comprises: (i) 1-40 part by weight of a cardo binder resin consisting of compounds that are represented by the formula (1), (2) and (3); (ii) 1-20 part by weight of an acrylic monomer to be photopolymerized; (iii) 0.1-10 part by weight of a photopolymerization initiator; (iv) 0-10 part by weight of an epoxidated material; (v) 0.1-20 part by weight of a paint; (vi) 20-80 part by weight of a solvent using an ether solvent as a main solvent; and (vi) 0.005-4 part by weight of a fluoric surfactant. In the formulae, R is hydrogen, alkyl group of C1-10, phenyl group, benzyl group, and ethoxy group of C1-8; and X is halogen atom.
Patent KR-20010062863-A (KR)
Inventor: CHAE YEONG JU
IPC: A23L27/00
Filed: 1999-12-16
Abstract: PURPOSE: A method for improving the quality of an acid-hydrolyzed undiluted amino acid solution by using cultivated Saccharomyces rouxii is provided to improve flavor of the amino acid solution and shorten the aging process of the solution. CONSTITUTION: The method is characterized by the following steps of: (i) hydrolyzing defatted soybeans, vegetable protein, with hydrochloric acid; (ii) neutralizing and fixing the undiluted solution of acid-hydrolyzed amino acid; (iii) cultivating 10¬8 of Saccharomyces rouxii OB-1 in 1ml of the undiluted amino acid solution; (iv) putting 1-10% of the cultured yeast into the undiluted amino acid solution before a filtration process of the solution; and then (v) culturing and aging the yeast added amino acid solution for 1-3weeks.
Patent KR-20010063417-A (KR)
Inventor: HYUN KYOUNG TAE
IPC: A23L27/10
Filed: 1999-12-22
Abstract: PURPOSE: A method for preparing smashed garlic by adding citric acid to crushed garlic and sterilizing the garlic by a cooling method is provided to prevent change in color of garlic and preserve the garlic for a long time. CONSTITUTION: The method includes the following steps of: (i) defrosting low temperature treated whole bulb of garlic at room temperature for 12hr and warm air drying the garlic at 40deg.C for 10hr; (ii) dehydrating the garlic at 42-47deg.C for 38hr and removing the skin of the dried garlic and keeping the garlic in cold storage of 0-5deg.C; (iii) sterilizing the garlic by cooling it to 5-10deg.C and putting in hot water of 70-90deg.C for 45sec before re-cooling the garlic to 5-10deg.C; (iv) mixing 0.4-1% of ginger and 0.1-1% of garlic vinegar with the sterilized garlic, by the weight of the garlic and crushing the mixed garlic; and (v) adding 0.5-1wt% of citric acid to the crushed garlic and smashing the processed garlic before packing the resulting garlic in a container to be filled with nitrogen gas.
Patent KR-20010058234-A (KR)
Inventor: BAEK JONG MYEONG
IPC: G06F17/00
Filed: 1999-12-27
Abstract: PURPOSE: A method for introducing an enterprise resource planning system based on a web and constructing a selection support system is provided to support a decision-making from a user side in an ERP introduction and a product estimation procedure. CONSTITUTION: An information strategy plan is formed according to a basic examination of an enterprise. Analyses of the present condition of an organization, data and a process are performed. A system vision is set on the basis of the analyses. An item for selecting an ERP(Enterprise Resource Planning) product is detected. Resource information and a product information database are used according to characteristics of the product. Software and system request items are sorted. The ERP product is selected using the product information database. After that, an ERP is constructed.
Patent KR-20010061325-A (KR)
Inventor: KWON BO GEUN
IPC: H04B7/26
Filed: 1999-12-28
Abstract: PURPOSE: A method for providing geographical information in a portable phone is provided to offer geographical information on the display part of a portable phone using a cell tracking method or a GPS(Global Positioning System). CONSTITUTION: If a geographical information application is started in a portable phone(S11), the portable phone judges whether a geographical information application start mode is set up as an input mode(S12). If the geographical information application start mode is set up as the input mode, the portable phone starts the input mode(S13). If the input mode is started, a map area in a display part outputs an initial symbol or a logo, and a text area outputs user input on the screen(S15). In case that the geographical information application start mode is not the input mode, the portable phone starts an output location mode(S14). In this case, the map area outputs an initial symbol or a logo, and the text area traces user location information using a cell tracking method or a GPS(S16). Then the portable phone judges whether the user attempts access to a base station by pushing a specific key(S17). If the user attempts access to the base station, the portable phone judges whether the user succeeded in the connection with a geographical information server and data were exchanged(S18). In case that the user succeeded in the connection with the geographical information server and data were exchanged, map information is displayed on the map area of the display part. The portable phone points out a specific point on the map so that the user can easily confirm it(S19).
Patent KR-20010064464-A (KR)
Inventor: SHIN SANG HYEON
IPC: B60S1/08
Filed: 1999-12-29
Abstract: PURPOSE: A windshield wiper motor of a vehicle is provided to prevent overload of a motor and a shot between a cam plate and a contact terminal while a wiper arm moves front/back by stopping an abnormal position through snow. CONSTITUTION: A windshield wiper motor comprises a pinion(1) rotating toward a rectangular shaft by being tooth engaged with a worm gear(58) rotating by a motor(57); a cam plate(2) having a notch unit(2); a rotation plate(3) rotatably mounted on a cover(62) and arranged closely to the pinion; an interlock unit interlocking while the pinion rotates forward; and a contact terminal(4) installed on the cover to supply current by being contacted to the cam plate. The interlock unit is not interlocked while the pinion rotates reversely by being mounted between the pinion and the rotation plate. The pinion rotates with the rotation plate in contacting first and second protrusions(5,6) while the pinion rotates toward clockwise. The pinion rotates in a counterclockwise, the cam plate is not moved by to prevent short while the wiper arm moves front/back a little caused by snow located in the stop position of the wiper arm.
Patent KR-20010066321-A (KR)
Inventor: AHN IK TAE
IPC: H04Q3/72
Filed: 1999-12-31
Abstract: PURPOSE: An apparatus for matching the speed between an ISDN AO/DI(Always On/Dynamic ISDN) subscriber control board and a packet board in a full electronic telephone exchange and a method for controlling thereof are provided to execute speed matching for subscriber always-on low-speed data and to send the data to a relevant packet board, in order to provide services to ISDN AO/DI subscribers. CONSTITUTION: An 8-bit serial-in/parallel-out shift register(70) containing 8 output terminals(QA-QH) is composed of a CLK terminal, a CLR terminal, and input terminals(A,B). AO/DI subscriber always-on low-speed D-channel data are supplied to the input terminals(A,B) as ITD signals. These signals are shifted to the output terminals(QA-QH) by the 8 bits by a TSD1_1 64Kbps serial clock. An 8-bit D-flipflop(71) has 8 data input terminals(D1-D8) and 8 output terminals(QA-QH). The data outputted from the 8-bit serial-in/parallel-out shift register(70) are continuously transferred to the input terminals(D1-D8) of the 8-bit D-flipflop(71). A shift register(72) is composed of an SL terminal, a CE terminal, and a CLK signal terminal.
Patent KR-20000068455-A (KR)
IPC: H01M4/587
Filed: 1998-07-06
Abstract: 충전/방전효율(쿨롱효율)이 우수하고, 용량유지율이 높은 리튬이온 2차 전지의 음극용 흑연분말의 제조방법으로서, 리튬이온을 흡장방출하는 것이 가능한 음극용 흑연재료의 표면에 C 6 H 10 O 5 를 기본구조로 하는 전분유도체 또는 다른 계면활성효과재료를 흡착 또는 피복시키고, 리튬, 칼슘, 마그네슘, 나트륨 및 칼륨으로 이루어지는 군으로부터 선택된 적어도 1종의 금속원소를 더 함유시키는 방법이다.
Patent KR-20000068547-A (KR)
Title: 평면 절삭기
IPC: B27C1/02
Filed: 1998-06-18
Abstract: 구동모터를 구비하고, 그 구동모터는 작동축(13)과 연결되어 있고, 그 작동축은 그 자유단에 절삭헤드(26)를 구비하고 있고, 그 절삭헤드는 정면(28)에 바이트(40, 50)를 가지고 있으며, 거기에 있어 절삭헤드(26)는 특히 원반형이고 가공재면에 평행으로 뻗은 부재로 형성되어 있고, 이때 절삭칼날은 특히 평평하고 분리가능하게 절삭헤드에 배치가능하고 주절삭날과 보조절삭날을 가진 바이트(38, 40)에 의해 지지되는, 목재가공용 평면 절삭기(10)는, 평면 절삭기(10)가 결과적으로 소형이면서 경량이고 손잡이(14)를 지닌 케이싱(12)을 갖고 있으며, 절삭헤드(26)가 주절삭날 없이 적어도 하나의 보조절삭날(48)을 지닌 바이트(38)를 갖게 함으로써, 특히 성능좋은 수동공구로 형성된다.
Patent KR-20000049222-A (KR)
Title: Device for conveying objects such as, in particular, bottles, flasks or the like
Inventor: BERNARD FREDERIC
IPC: B65G51/03
Filed: 1997-10-17
Abstract: PURPOSE: A device for conveying is provided to assembly, adjustment, maintenance, and to easy cleaning up a ventilation conveying system. CONSTITUTION: A device for conveying devices (1) such as, in particular, bottles, flasks or the like, with a protuberance (2) at their neck (3), comprising a blowing chamber (4) for blowing an air flux for driving the devices (1), and a support rail (5), co-operating with the objects (1) at the protuberance (2). The chamber (4) is, for example, made up of a body (7) and a plate (8), removable relative to the body (7), the support rail (5) being fixed to the plate (8). The device is provided, in particular, with at least two frame members (14, 15), on either side of the rail (5) along the blowing chamber (4). Optionally it comprises lateral guides (19), for ensuring the conveyance of the objects (1), consisting at least of one guide ramp (20) provided along the device opposite the body of the objects (1) and support rods (31) of the ramp (20), the rods (31) and the ramp (20) mutually co-operating at least by rotating articulation so as to ensure the adjusting of the transversal position of said ramp (20) relative to the objects (1).
Patent KR-20000057476-A (KR)
Title: Chemical mechanical polishing copper substrates
Inventor: KAUFMAN VLASTA BRUSIC
IPC: H01L21/306
Filed: 1997-12-05
Abstract: PURPOSE: Provided is a chemical mechanical polishing slurry comprising a film forming agent, an oxidizer such as urea hydrogen peroxide, a complexing agent such as ammonium oxalate or tartaric acid, an abrasive, and an optional surfactant. CONSTITUTION: A CMP slurry precursor composition comprises from about 2.0 to about 24.0 wt.% of urea and from about 1.0 to about 15.0 wt.% of at least one metal oxide abrasive, further including a film forming agent and/or a complexing agent. The composition further comprises from about 0.5 to about 3.0 wt.% of ammonium oxalate; and from about 0.01 to about 0.2 wt.% of benzotriazole; and from about 0.001 to about 0.1 wt.% of a surfactant. Also provided is a method for using the chemical mechanical polishing slurry composition to remove copper alloy, titanium, and titanium nitride containing layers from a substrate.
Patent KR-20000069856-A (KR)
IPC: G02F1/35
Filed: 1997-12-30
Abstract: 짧은 마하-젠더 간섭계(Mach-Zehnder interferometer)(200)의 구성으로 전부-광 파이버 스위치(all-optical fiber switch)를 구현한다.  마하-젠더 스위치(200)는 온도에 대하여 높은 안정성을 갖도록 제작되어 스위치의 출력에서 바람직스럽지 못한 불안정성을 가져올 수 있는 온도 경사나 다른 열적인 효과를 최소화한다.  바람직한 실시예의 마하-젠더 스위치(200)는 결합기(230, 260) 사이의 길이가 2cm보다 작을 정도로 충분히 짧아서 열적으로 안정된 것이 유리하며, 완전한 스위칭은 2개의 암(235, 240) 중 하나 또는 모두를 결합기(230, 260) 사이에서 강하게 도핑하여 하나 또는 2개의 암 모두에 비선형성이 강한 영역을 제공하여 구현한다.  펌프 입력원(215)을 이용하여 2개의 암 중 하나의 전파 특성에 영향을 미쳐서 스위치(200)의 출력 결합 비율을 제어한다.  펌프 입력 암(281, 220)의 비선형성으로 인하여, 낮은 펌프 파워를 사용할 수 있으며, 이로 인하여 높은 펌프 입력 파워와 관련된 난점 및 고비용이 경감된다.
Patent KR-20000070629-A (KR)
Title: 순수한 산화 에틸렌 증류법
IPC: C07D303/04
Filed: 1998-01-29
Abstract: 산화 에틸렌의 증류 정제 공정에서, 산화 에틸렌, 포름알데히드 및 5 중량% 이상의 물을 포함하는 수성 혼합물을 공급부를 통해 하나 이상의 증류 칼럼을 포함하는 증류 장치로, 탑저로부터 8번째 이상의 이론상 단 높이에 도입하며, 산화 에틸렌은 탑정에서 분리하고, 탑저층에서는 5 중량% 미만의 산화 에틸렌을 함유하는 혼합물을 얻는다.
Patent KR-20010012516-A (KR)
Title: 구리 금속공정용 신뢰성 베리어 인테그레이션
IPC: H01L21/768
Filed: 1998-05-13
Abstract: 본 발명은 구리로 홀을 매입하기 위한 프로세스 시퀀스 및 이에 따른 하드웨어을 제공한다.  상기 시퀀스에는 홀이 형성된 절연층을 통한 구리의 확산을 방지하기 위하여 상기 홀에 신뢰성있는 베리어 층을 형성하는 단계가 포함된다.  일 시퀀스에는 패턴된 절연체 상에 일반적으로 컨포말한 베리어 층을 형성하는 단계, 홀의 하부를 식각하는 단계, 두번째 베리어를 증착하는 단계, 및 구리로 상기 홀을 매입하는 하는 단계가 포함된다.  또다른 시퀀스에는, 기저 절연층 상에 첫번째 베리어 층을 증착하는 단계, 상기 베리어 층과 상기 절연층 양자를 통하여 홀을 형성하는 단계, 상기 홀에 일반적으로 컨포말한 두번째 베리어 층을 증착하는 단계, 상기 홀의 하부에서 상기 베리어 층을 제거하는 단계, 및 상기 홀을 선택적으로 구리로 매입하는 단계가 포함된다.
Patent KR-20010013627-A (KR)
Inventor: JONES RAYMOND VINCENT HEAVON
IPC: C07C/
Filed: 1998-05-29
Abstract: 3-Isochromanome is prepared by reacting an o -xylene-alpha,alpha'-dihalide with carbon monoxide and water in the presence of a catalyst, characterized in that the pH of the reaction is maintained between 7 and 11.
Patent KR-20010020536-A (KR)
IPC: C08G64/12
Filed: 1998-06-29
Abstract: Improvements are disclosed for biphasic polymerization processes in which an aqueous solution of a first monomer that is hydrolytically unstable below a pH of about six or above a pH of about eight is admixed with a water-immiscible organic solvent and there is added to the admixture a catalyst selected from tertiary amine, quaternary amine and phosphonium catalysts, an acid-forming co-monomer for the first monomer, an acid scavenger, after which the resulting polymer is recovered, wherein the improvement includes providing the aqueous solution at a pH between about si and about eight, and adding to the admixture the acid-forming co-monomer and the acid scavenger at relative rates effective to maintain the pH of the admixture between about six and about eight. The catalyst may be added in a molar ratio to the first monomer effective to provide a predetermined weight-average or number-average molecular weight for the resulting polymer. Biphasic polymerization processes for monomers that are not pH sensitive are also disclosed.
Patent KR-20010073565-A (KR)
Title: A electro static chuck for semiconductor device fabrication installation
Inventor: MIN BYEONG GON
IPC: H01L21/68
Filed: 2000-01-18
Abstract: PURPOSE: An electrostatic chuck used in a semiconductor manufacturing process is provided to prevent a non-uniform static electricity which is generated when a semiconductor wafer is chucked, and prevent a defective chucking due to compression of a thin film which is deposited on the semiconductor wafer. CONSTITUTION: An electrostatic chuck(10) includes a table(12) and a power supplying unit(20). The table(12) includes an electrode and a dielectric plate(16). The dielectric plate(16) is formed on the electrode(14) and allows a semiconductor wafer(40) to disposed thereon. The dielectric plate(16) undergoes polarization when a voltage is applied to the electrode(14), so as to chuck the semiconductor wafer(40). The polarization induces the electrostatic chuck. The power supplying unit(20) supplies a power to the electrode(14). The power supplying unit(20) applies different voltages in an order from a center of the electrode(14) to edge portions or in reverse order with a time interval. For this, a voltage adjuster(24) and a switch(26) are installed between a power supply(22) of the power supplying unit(20) and the electrode(14). The switch(26) is controlled by a controller(30).
Patent KR-20010076014-A (KR)
Title: Trench isolation structure using epitaxial growth for a semiconductor device and a forming method for thereof
Inventor: BAE GEUM JONG
IPC: H01L21/76
Filed: 2000-01-24
Abstract: PURPOSE: A trench device isolation structure using an epitaxial layer growth and a method for isolating the trench device are provide to form a gate oxide layer uniformly on a trench. CONSTITUTION: The trench device isolation structure using the epitaxial layer growth includes a substrate, a trench and an isolation layer. The substrate is upper inter surface adjacent to a region on which the trench is to be formed is higher than the surface of other regions. The trench is formed with a predetermined depth from the surface of the substrate where is higher than adjacent parts. The isolation layer is filled inside of the trench. The isolation layer further includes an oxide layer.
Patent KR-20000071424-A (KR)
Title: 횡결합 공진자형 표면파 필터 및 종결합 공진자형 표면파필터
IPC: H03H9/64
Filed: 2000-03-08
Abstract: 본 발명은 공진자형 표면파 필터에 관한 것으로서, BGS파를 이용하고 우수한 공진 특성을 가지는 공진자형 표면파 필터를 제공하기 위한 것이다.  본 발명에 따른 표면파 필터는 표면파 기판 위에 형성된 제1, 제2 인터디지털 변환기(IDT)가 BGS파를 이용한 표면파 공진자를 구성하고, 제1, 제2 표면파 공진자가 결합하여 횡결합형 공진자 필터를 구성한다.  본 발명에 따른 횡결합 공진자형 표면파 필터에 있어서, 표면파 기판의 비틀림이 일정한 경우, 11 방향에 따른 비유전율을 E= , 표면파 파장 λ로 규격화된 IDT의 교차폭을 y라 할 때, 는 0 내지 3000의 범위 내에 있고, y는 다음 식을 만족한다. 
     0.945+5.49×exp(-E/366)≥y≥2.46×exp(-E/219)
Patent KR-20010088090-A (KR)
Title: Ashing Chuck of Wafer Ashing Equipment
Inventor: KIM DO HYEONG
IPC: H01L21/306
Filed: 2000-03-10
Abstract: PURPOSE: A heating chuck of wafer ashing equipment is provided to effectively eliminate polymer exposed to plasma and adhered to a wafer in an etching process, by forming a circular groove in the heating chuck used in a conventional ashing process. CONSTITUTION: A heating chuck(300) for an ashing process is formed in semiconductor manufacturing equipment having a groove of a straight line type. A circular groove(340) is formed in an edge portion of the heating chuck. A wafer(10) is exposed to plasma in an etching process so that the circular groove formed in the heating chuck contacts a portion to which polymer is adhered.
Patent KR-20010014571-A (KR)
Inventor: KOJIMA SHUICHI
IPC: D03D47/38
Filed: 2000-03-11
Abstract: PURPOSE: To provide a picking water changing equipment for water jet loom, having simple piping arrangement, easily compactifiable and capable of reducing equipment cost. CONSTITUTION: This equipment comprises as follows: A nonmoving body 27 has a pair of feeding canals 36 and 37 and a common drainage 38. An inner tube 29 comprising a slider 28 has plural intermediate canals 291, 292, 297 and 298 and plural intermediate drainage 293, 294, 295 and 296. The intermediate canals 291, 292, 297 and 298 are communicated with picking nozzles 14, 15, 16 and 17. An outlet 361 of the feeding canal 36 is capable of connecting with a pair of intermediate canals 291 and 292 and a pair of intermediate drainage 293 and 294 by vertical motion of the slider 28. An outlet 371 of the feeding canal 37 is capable of connecting with a pair of intermediate drainage 295 and 296 and a pair of intermediate canals 297 and 298.
Patent KR-20000049454-A (KR)
Inventor: KIM JONG SUNG
IPC: F16K15/00
Filed: 2000-03-22
Abstract: PURPOSE: A check valve for injecting gas into air sac is provided to use in injecting air into a gas tube or discharging air therefrom by a straw or the like. Also, the check valve is provided to simplify a structure thereof, to be reused repeatedly, and to be automatically and completely sealed. CONSTITUTION: A check valve for injecting gas into a gas tube is provided in an upper and lower film substrates(5, 6) which are piled up one on another and has a straight air passage of which front and rearward periphery portions(1 and 2) are opened and left and right periphery portions are fused each other. The upper and lower film substrates(5, 6) are made of synthetic resin which is fusible material as same as that of an air sac, such as a polyethylene, a polypropylene, or the like. The check valve is constituted by adhering hard films(10, 20) made of synthetic resin material having a good elastic restoration force such as PET(polyethylene terephthalate) and the like on the front periphery portion(1) side with adhesive agent(7) and also adhering soft films(10', 20') made of any one material selected from materials having a good flexibility and adhesive capability such as soft PVC(polyvinyl chloride), latex rubber, silicon rubber, or the like on the rearward periphery portion(2) side with adhesive agent(7). According to the check valve, since an insertion and removal of a straw is made easily, failure rate is low even in repeat uses. Also, since the air passage is formed in a straight configuration and, thus, bottleneck portion is not existed, injection of air into an air sac or discharge of air therefrom is made quickly and conveniently.