US3926306A - Method for sealing a filled container under vacuum, and vacuum-sealed filled containers - Google Patents

Method for sealing a filled container under vacuum, and vacuum-sealed filled containers Download PDF

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Publication number
US3926306A
US3926306A US370513A US37051373A US3926306A US 3926306 A US3926306 A US 3926306A US 370513 A US370513 A US 370513A US 37051373 A US37051373 A US 37051373A US 3926306 A US3926306 A US 3926306A
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United States
Prior art keywords
container
top layer
walls
sealed
fusing
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Expired - Lifetime
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US370513A
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English (en)
Inventor
Nederveen Hans Bertil Van
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SKF Industrial Trading and Development Co BV
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SKF Industrial Trading and Development Co BV
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/001—Joining in special atmospheres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/06—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzle being arranged for insertion into, and withdrawal from, the mouth of a filled container and operating in conjunction with means for sealing the container mouth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1632—Laser beams characterised by the way of heating the interface direct heating the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/826—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps without using a separate pressure application tool, e.g. the own weight of the parts to be joined
    • B29C66/8266—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps without using a separate pressure application tool, e.g. the own weight of the parts to be joined using fluid pressure directly acting on the parts to be joined
    • B29C66/82661—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps without using a separate pressure application tool, e.g. the own weight of the parts to be joined using fluid pressure directly acting on the parts to be joined by means of vacuum

Definitions

  • ABSTRACT A method for the manufacture of a closed casing, in which material is stored at a pressure of less than 10 torr, characterized in that the casing is sealed in a space in which the pressure is at least equal to the pressure mentioned above.
  • the invention relates to a method of manufacturing a sealed casing in which material is stored at a pressure of I less than torr.
  • These objects usually take the shape of a round bar, a tube or similar section, and comprise primarily a casing, called container, in which powdered or granular material is usually'stored, and a closure (lid).
  • the material is made into a relatively dense mass by a compacting process, after which the container is evacuated, i.e. air and moisture'are withdrawn from the container until the pressure in the container hasreacheda value between 10 and 10".
  • This method of removing air, moisture andsuch like substances has so far been effected with the aid of a tube connected to the container and to which a pumping installation is connected. After the desired pressure in the container has been reached with the aid of the pump, the connecting tube between the container and the'pumping installation is cut and sealed at the same time.
  • the invention introduces a method'which considerably reduces the operations described in the-foregoing and used by the known method.
  • the method in accordance with the invention is therefore characterised'in' that the casing is sealed in a space in which the pressure is at least equal to that mentioned above.
  • FIG. 1 is a diagrammaticlview of a device provided with a space or chamber in which the methodis ap-' DESCRIPTION OF PREFERRED EMBODIMENT
  • the-device comprises a space or chamber la with a work table 2, comprising interconnected movable assembly tracks 3a, 3band 3c, onwhich containers 4a, 4b and 4c are placed.
  • Assembly track 3a is connected with a compacting device 5, for example a vibrating mechanism.
  • -means 10 consist of magnet coils, whose magnetic field is controllable; the strength is made dependent on the magnetic properties of the material 6,7 for instance. It is evident that other means for fixing or stabilizing the material, such as a suction device or other known mechanical fixing devices, can be used.
  • each container 4b issealed at least'on one side by means of a specific sealing device, for which the cathode 13 with control electrode 14, and an anode 15 at some distance from it.
  • an electromagnetic focusing lens 16 as well as beam-deflection coils 17 are fitted.
  • the method in accordance with .the invention also has the advantage that-the number of rejects among the containers to be extrudedis very small.
  • the sealing of a container4a is advantageously effected through the filled material itself functioning as sealing material.
  • FIG. 2a represents the longitudinal, section through a container 20 which comprises a casing 21 made of relatively thin metal, in which a powderedor granular material 22 is stored. It is observed that the casing need not specially be made of metal; a plastic material, for instance, (P.V.C.) with sufficient hardness with respect to the processing temperatures: concerned is likewise suitable as casing material or container.
  • a plastic material for instance, (P.V.C.) with sufficient hardness with respect to the processing temperatures: concerned is likewise suitable as casing material or container.
  • container 20 is filled up to the edge of the container wall with the powdered orgranular material after the compaction process-
  • the upper layer 23 of material 22- is caused to melt with the aid of welding beam :19, in such a way that this melted layer is fused with the upper edge 21a of the container into a seal 25 (FIG, 2b).
  • This sealed container comprises a generally flat top surface .withno projecting parts, i.e. an unobstructed surface.
  • the granular or powdered material 22 is particularly suited to shape a well-sealing fused layer.
  • the seal need not be formed especially at the upper edge, but that the formation of the seal can also be effected at a different level.
  • FIG. 3a represents a container 26, whose contents 27 consist of a non-meltable, at least not readily meltable substance. Generally, this consists of a filling material not suitable as sealing material for the container, as well as material which is difficult to check as to complete air-tightness or which is not reliable in this respect.
  • a favorable solution in accordance with the invention is characterised in that after the compacting process and the evacuation at the top of the compacted mass 27, a readily meltable layer 28 to be fused with the wall of the container is provided, which is fused with upper edge 26a to form seal 29 (see FIG. 3b).
  • filling a container in vacuum chamber 1a has the advantage of (powdered or granular) material not being lost but being always reusable on account of the specific conditions in the chamber.
  • the upper layer 28 (FIG. 3a), for instance, may have the same chemical composition as the actual filling material, but then has different physical properties to aid effective sealing.
  • Contents 27 of container 26 may consist of powdered material, for instance, and the upper layer 28, serving as sealant, of granular material, with otherwise the same properties as the filling material.
  • the layer to be fused may be substantially the same material as the casing.
  • FIG. 4a shows a longitudinal section through an extrudable container 30, whose contents, instead of granular or powdered material, consists of tablets 31.
  • the tablets which are usually made of powdered material possess in themselves a greater density than the basic material, so that the treatment of compacting the contents of a container can be dispensed with, or at least need be less intensive than in the case where only powdered or granular material is used.
  • a layer 32 of the top tablet is fused with the edge of container 30 by means of welding beam 19, so that an (air-tight) seal 33 (see FIG. 4b) is obtained. It will be clear that the entire tablet 31 can also be melted into a seal.
  • the top tablet 34 (see FIG. 40) is provided, in accordance with a favorable embodiment, with a suitable layer 35 which is then fused with the edge 30a of container 30 to form seal 33 (see FIG. 4b).
  • FIG. gives a diagrammatic view of an embodiment of a welding device 36, with the aid of which the terminal parts 37 and 38 of the container can be sealed.
  • the filling material 40 is readily weldable, at least there is readily weldable material near the terminal parts 37 and'38 of container 39.
  • this specific sealing device 36 works as follows: relatively heavy discs 36a and 36b made of specially suited material rotate at high speed in the vacuum space and at the same time move in the direction indicated by arrows p, i.e. perpendicularly to the center line of container 39. Where the container wall 39 and fusible layers 37 and 38 meet an intensive exchange of energy takes place, in
  • This 4 welding method has the advantage of being economical as regards initial expenditure and maintenance, while it can also be favorably be effected into a space where the pressure is at least 10 by a method controllable from outside.
  • a closed and sealed container containing a stored material at a pressure less than 10' torr within said container, the container comprising a plurality of walls which surround and define an enclosure, one of said walls comprising a solid and generally flat outer layer of said stored material fused and sealed to adjacent walls of said remaining walls.
  • a method for closing and sealing a container which contains a material therein to be stored at a pres sure less than 10 torr, said container formed by walls having edges which define an opening of the container to be closed and sealed, and said material therein having a top layer adjacent said opening, the method comprising the steps of placing said container with said material therein in a chamber, reducing the pressure within said chamber to less than 10 torr and, while at said pressure, fusing and subsequently solidifying said top layer of the material thus forming said layer into a top wall of said container, and fusing said top wall of said edges to close and seal said opening.
  • a method according to claim 2 wherein fusing said top layer comprises directing onto said top layer the beam of an electron beam welding device which is within said chamber and operating under said pressure of less than 10 torr.
  • a method according to claim 7 comprising the further step of fixing said powdered material in said container prior to said fusing of same.
  • a method according to claim 2 comprising the further step of forming said material into tablet-shaped elements prior to placing same in said container.
  • a method according to claim 7 comprising the further step of vibrating said container and material therein prior to said fusing.
  • a method according to claim 2 wherein said fusing comprises directing a laser beam onto said top layer.
  • a method according to claim 2 wherein said fusing comprises providing heat with a friction welding device.
  • a closed container according to claim 14 wherein 16.
  • said stored material comprises a fusible substance as said top layer thereof and a non-fusible substance as said top layer and said container comprise substantially 5 the remainder below Said p y UNITED STATES PATENT AND TRADEMARK OFFICE CERTIFICATE OF CORRECTION PATENT NO. 3, 926, 306
  • the Priority Document date should be --June 26, l972--.

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  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Packages (AREA)
  • Vacuum Packaging (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Transmitters (AREA)
  • Press Drives And Press Lines (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US370513A 1972-06-26 1973-06-15 Method for sealing a filled container under vacuum, and vacuum-sealed filled containers Expired - Lifetime US3926306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7208731A NL7208731A (de) 1972-06-26 1972-06-26

Publications (1)

Publication Number Publication Date
US3926306A true US3926306A (en) 1975-12-16

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ID=19816360

Family Applications (1)

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US370513A Expired - Lifetime US3926306A (en) 1972-06-26 1973-06-15 Method for sealing a filled container under vacuum, and vacuum-sealed filled containers

Country Status (10)

Country Link
US (1) US3926306A (de)
JP (1) JPS4951618A (de)
CS (2) CS183749B2 (de)
DE (1) DE2332123B2 (de)
FR (1) FR2190672B1 (de)
GB (1) GB1444256A (de)
IT (1) IT986916B (de)
NL (1) NL7208731A (de)
SE (1) SE393352B (de)
SU (1) SU936800A3 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229872A (en) * 1978-08-18 1980-10-28 Kelsey-Hayes Company Method for filling and sealing a container
US4471206A (en) * 1982-03-11 1984-09-11 Taiyo Sanso Co., Ltd. Method of sealing vacuum bottle evacuation chambers
US4969556A (en) * 1988-05-10 1990-11-13 Hajime Ishimaru Vacuum container
US4988406A (en) * 1986-11-17 1991-01-29 Soltech, Inc. Insulation device and method of making same
US5452565A (en) * 1992-02-24 1995-09-26 Thermopac Ab Device for wrapping and welding under vacuum, used in the manufacture of a thermally insulated container
US5729959A (en) * 1995-11-07 1998-03-24 Azionaria Costruzioni Macchine Automatiche S.P.A. Method and apparatus for packaging a series of products in a tube of film including preheating areas of film which are to be connected for sealing about or between products
US20070084553A1 (en) * 2005-10-19 2007-04-19 Toyota Jidosha Kabushiki Kaisha Method and apparatus for laser welding thermoplastic resin members
US20080044924A1 (en) * 2006-08-21 2008-02-21 Kurita Water Industries Ltd. Water quality evaluation method and substrate contacting apparatus used
US20090282781A1 (en) * 2008-05-14 2009-11-19 Tsinghua University Vacuum device and method for packaging same
US20090288364A1 (en) * 2008-05-23 2009-11-26 Tsinghua University Vacuum packaging system
US20090288363A1 (en) * 2008-05-23 2009-11-26 Tsinghua University Vacuum packaging system
US20150028083A1 (en) * 2013-07-28 2015-01-29 Forge Tech, Inc. Method for repairing and improving structural integrity of storage tanks
CN108723366A (zh) * 2018-04-11 2018-11-02 华中科技大学 一种电子束熔丝过渡状态保持系统及保持方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5543042B2 (de) * 1974-03-15 1980-11-04
US4606883A (en) * 1983-10-21 1986-08-19 J. Wizemann Gmbh & Co. Method of manufacturing a metallic composite article
JPS6475606A (en) * 1987-09-16 1989-03-22 Kobe Steel Ltd Method for degassing and hermetically sealing capsule used for hot isostatic compression
AU6991091A (en) * 1990-02-06 1991-09-05 Satake Engineering Co. Ltd. Vacuum packing method and apparatus for practicing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806595A (en) * 1956-01-17 1957-09-17 L A Drcyfus Company Packaged thermoplastics

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806595A (en) * 1956-01-17 1957-09-17 L A Drcyfus Company Packaged thermoplastics

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229872A (en) * 1978-08-18 1980-10-28 Kelsey-Hayes Company Method for filling and sealing a container
US4471206A (en) * 1982-03-11 1984-09-11 Taiyo Sanso Co., Ltd. Method of sealing vacuum bottle evacuation chambers
US4988406A (en) * 1986-11-17 1991-01-29 Soltech, Inc. Insulation device and method of making same
US4969556A (en) * 1988-05-10 1990-11-13 Hajime Ishimaru Vacuum container
US5452565A (en) * 1992-02-24 1995-09-26 Thermopac Ab Device for wrapping and welding under vacuum, used in the manufacture of a thermally insulated container
US5729959A (en) * 1995-11-07 1998-03-24 Azionaria Costruzioni Macchine Automatiche S.P.A. Method and apparatus for packaging a series of products in a tube of film including preheating areas of film which are to be connected for sealing about or between products
US20070084553A1 (en) * 2005-10-19 2007-04-19 Toyota Jidosha Kabushiki Kaisha Method and apparatus for laser welding thermoplastic resin members
EP1777058A3 (de) * 2005-10-19 2007-05-30 Toyota Jidosha Kabushiki Kaisha Verfahren und Vorrichtung zum durch Laserschweissen Verbinden von Werkstücken aus thermoplastischen Kunststoffen
US20080044924A1 (en) * 2006-08-21 2008-02-21 Kurita Water Industries Ltd. Water quality evaluation method and substrate contacting apparatus used
US8012755B2 (en) * 2006-08-21 2011-09-06 Kurita Water Industries Ltd. Water quality evaluation method and substrate contacting apparatus used
US20090282781A1 (en) * 2008-05-14 2009-11-19 Tsinghua University Vacuum device and method for packaging same
US8484932B2 (en) * 2008-05-14 2013-07-16 Tsinghua University Vacuum device and method for packaging same
US20090288364A1 (en) * 2008-05-23 2009-11-26 Tsinghua University Vacuum packaging system
US20090288363A1 (en) * 2008-05-23 2009-11-26 Tsinghua University Vacuum packaging system
US8042319B2 (en) 2008-05-23 2011-10-25 Tsinghua University Vacuum packaging system
US8087219B2 (en) 2008-05-23 2012-01-03 Tsinghua University Vacuum packaging system
US20150028083A1 (en) * 2013-07-28 2015-01-29 Forge Tech, Inc. Method for repairing and improving structural integrity of storage tanks
US9199333B2 (en) * 2013-07-28 2015-12-01 Forge Tech, Inc. Method for repairing and improving structural integrity of storage tanks
CN108723366A (zh) * 2018-04-11 2018-11-02 华中科技大学 一种电子束熔丝过渡状态保持系统及保持方法

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FR2190672B1 (de) 1976-04-02
DE2332123A1 (de) 1974-01-10
CS183706B2 (en) 1978-07-31
SE393352B (sv) 1977-05-09
CS183749B2 (en) 1978-07-31
DE2332123B2 (de) 1979-06-13
JPS4951618A (de) 1974-05-20
FR2190672A1 (de) 1974-02-01
IT986916B (it) 1975-01-30
NL7208731A (de) 1973-12-28
SU936800A3 (ru) 1982-06-15
GB1444256A (en) 1976-07-28

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