FR2664020A1 - CONNECTING TUBE FOR CONTROLLING THE SEALING OF PLASTIC SHEETS. - Google Patents
CONNECTING TUBE FOR CONTROLLING THE SEALING OF PLASTIC SHEETS. Download PDFInfo
- Publication number
- FR2664020A1 FR2664020A1 FR9107957A FR9107957A FR2664020A1 FR 2664020 A1 FR2664020 A1 FR 2664020A1 FR 9107957 A FR9107957 A FR 9107957A FR 9107957 A FR9107957 A FR 9107957A FR 2664020 A1 FR2664020 A1 FR 2664020A1
- Authority
- FR
- France
- Prior art keywords
- flange
- sheets
- welded
- tubing
- connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
- B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
- B29C66/4742—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat said single elements being spouts
- B29C66/47421—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat said single elements being spouts said spouts comprising flanges
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/82—Testing the joint
- B29C65/8207—Testing the joint by mechanical methods
- B29C65/8246—Pressure tests, e.g. hydrostatic pressure tests
-
- 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
- B29C66/004—Preventing sticking together, e.g. of some areas 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
- B29C66/01—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
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
-
- 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
- B29C66/342—Preventing air-inclusions
-
- 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
- B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
-
- 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
- B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/027—Details with respect to the testing of elastic elements, e.g. gloves, condoms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2884—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for welds
Abstract
L'invention apporte un raccord pour le contrôler l'étanchéité de deux feuilles de matière thermoplastique étendues et soudées l'une sur l'autre par des joints entourant des portions de surface. Le raccord comprend une tubulure (8) munie d'une bride à souder (1), qui est soudée par le dessus de sa bride (1) au côté intérieur de la feuille (2) du haut, le dessous de la bride étant pourvu de boutons ou d'autres saillies (4) entre lesquels existent des passages libres pour l'évacuation de l'air de l'espace (6) entre les feuilles (2, 3) Application au bétonnage de revêtements de tunnels.The invention provides a connection to control the tightness of two sheets of thermoplastic material extended and welded to one another by joints surrounding surface portions. The fitting comprises a tubing (8) provided with a weld flange (1), which is welded from above its flange (1) to the inner side of the top sheet (2), the underside of the flange being provided buttons or other projections (4) between which there are free passages for the evacuation of air from the space (6) between the sheets (2, 3) Application to the concreting of tunnel linings.
Description
TL invention concerne un raccord pour contrôler l'étanchéité de deuxThe invention relates to a coupling for checking the tightness of two
feuilles de matière thermoplastique en bandes, qui sont soudées l'une sur l'autre par des sheets of thermoplastic material in strips, which are welded to one another by
joints entourant des portions de surface des feuilles. joints surrounding surface portions of the sheets.
De tels joints pour relier deux feuilles en forme de bandes, sont utilisés fréquemment dans la réalisation de revêtements de tunnels, application dans laquelle il est nécessaire de contrôler l'étanchéité du Such joints for connecting two strip-shaped sheets are frequently used in the production of tunnel coatings, an application in which it is necessary to check the tightness of the
joint ou l'espace enfermé entre les joints. seal or the space enclosed between the joints.
Jusqu'à présent, on utilise à cet effet des tubes de raccordement branchés sur une source de vide et Until now, connection tubes connected to a vacuum source have been used for this purpose.
que l'on relie directement à une feuille, mais cette méthode pose souvent des problèmes quant à l'étanchéité de l'endroit o la feuille est pressée contre la surface15 latérale d'un tube. Although this method is often directly related to a sheet, this method often poses problems as to the tightness of the place where the sheet is pressed against the lateral surface of a tube.
Le but de l'invention est d'éviter cet incon- vénient et de proposer un raccord, du type mentionné au The object of the invention is to avoid this inconvenience and to propose a connection, of the type mentioned in
début, qui se laisse souder relativement facilement aux bandes de plastique et assure un haut degré d'étan-20 o chéité. at the beginning, which can be welded relatively easily to the plastic strips and ensures a high degree of stability.
Conformément à l'invention, on obtient ce résultat par le fait qu'il comprend une tubulure munie According to the invention, this result is obtained by the fact that it comprises a tubing provided with
d'une bride à souder, qui est soudée par le dessus de sa bride à souder au côté intérieur de la feuille du haut,25 le dessous de la bride à souder étant pourvu de boutons ou d'autres saillies entre lesquels existent des pas- a solder flange, which is welded from the top of its weld flange to the inner side of the top sheet, the underside of the solder flange being provided with knobs or other projections between which there are
sages libres. Ainsi, la feuille du haut peut être reliée de façon simple à la tubulure, dans la région du joint free sages. Thus, the top sheet can be connected in a simple way to the tubing, in the region of the joint
double, ce qui permet d'obtenir un haut degré d'étan- chéité de la liaison entre la feuille et la tubulure. double, which makes it possible to obtain a high degree of sealing of the connection between the sheet and the tubing.
On obtient également l'avantage que lors d'un contrôle de l'étanchéité par application d'une dépres- The advantage is also obtained when a leakage test is checked by application of a depression.
sion la tubulure ou, plus précisément, son ouverture, ne35 peut pas être bouchée par la feuille du bas puisque les boutons ou autres saillies assurent la distance nécessaire entre le dessous de la bride et le côté intérieur de la feuille du bas, de sorte qu'il subsiste au moins des fentes à travers desquelles l'air peut être aspiré hors de l'espace subsistant entre les joints élémentaires du joint double. the tubing or, more precisely, its opening, can not be blocked by the bottom sheet since the buttons or other protrusions provide the necessary distance between the underside of the flange and the inner side of the bottom sheet, so that There are at least slots through which air can be sucked out of the gap between the elementary joints of the double seal.
Selon une autre caractéristique de l'inven- According to another characteristic of the invention
tion, la tubulure est fabriquée à la façon d'un tuyau souple et est réalisée à son extrémité libre pour être tubing is manufactured in the manner of a hose and is made at its free end to be
reliée à un raccord tubulaire normalisé. connected to a standard tubular connection.
Grâce à ces mesures, la tubulure peut être raccordée de façon simple à un tuyau souple branché sur Thanks to these measures, the tubing can be connected in a simple way to a hose connected to
la source de vide.the source of emptiness.
Selon un mode de réalisation préféré de l'invention, la tubulaire est entourée d'une bague reliée à la bride à souder et dotée de préférence d'un filetage. De cette manière, on peut faire passer la tubulure et le tuyau souple raccordé à elle à travers un tube protecteur que l'on peut visser sur le filetage de la bague Le tuyau peut ainsi être protégé de façon sûr contre les endommagements, par exemple pendant des According to a preferred embodiment of the invention, the tubular is surrounded by a ring connected to the flange to be welded and preferably provided with a thread. In this way, the tubing and the hose connected to it can be passed through a protective tube that can be screwed onto the thread of the ring. The hose can thus be protected against damage, for example during of the
travaux de bétonnage.concrete work.
Il s'est révélé particulièrement avantageux de fabriquer la tubulure et la bride à souder et aussi la bague éventuellement, en une seule pièce, de préférence It has proved particularly advantageous to manufacture the tubing and the flange to be welded and also the ring possibly, in one piece, preferably
par moulage par injection d'une masse de matière thermo- by injection molding of a mass of thermo-thermal
plastique. La liaison étanche entre la bride à souder, la tubulure et la bague est ainsi réalisée de la manière la plastic. The sealed connection between the flange to be welded, the tubing and the ring is thus made in the
plus simple.simpler.
Il peut être prévu en plus que le raccord possède une dureté Shore moyenne de 75 à 90. It can be further provided that the fitting has an average Shore hardness of 75 to 90.
Lorsque la dureté est comprise entre ces Avaleurs, la tubulure est d'une part suffisamment fle- When the hardness is between these swallows, the tubing is on the one hand sufficiently flexible.
xible pour qu'une bonne soudabilité à la feuille soit assurée et, d'autre part, suffisamment dure pour qu'une to ensure good solderability to the sheet and, on the other hand,
stabilité de forme suffisante soit garantie. sufficient form stability is guaranteed.
L'invention sera ci-après décrite plus en détail et à titre non limitatif, en référence à la figure unique du dessin annexé, qui est une coupe axiale The invention will hereinafter be described in more detail and without limitation, with reference to the single figure of the appended drawing, which is an axial section.
du raccord.fitting.
Le raccord selon l'invention comporte une bride à souder 1 qui est soudée au côté intérieur de la feuille 2 du haut, laquelle est reliée à la feuille 3 du bas par un joint non représenté Le dessous de la bride à souder 1 est pourvu de boutons 4 entre lesquels on a laissé subsister des passages 5 par lesquels peut circuler l'air lors de l'évacuation de l'espace 6 entre les bandes d'étanchéité à double couche et qui empêchent en plus l'obturation étanche de l'ouverture 7 de la tubulure 8, laquelle est reliée d'un seul tenant à la The coupling according to the invention comprises a welding flange 1 which is welded to the inner side of the top sheet 2, which is connected to the bottom sheet 3 by a not shown seal. The underside of the solder flange 1 is provided with buttons 4 between which there have been left passages 5 through which the air can circulate during the evacuation of the space 6 between the double-layer sealing strips and which further prevent sealing of the opening 7 of the tubing 8, which is connected in one piece to the
bride à souder.soldering flange.
Dans la région de son extrémité libre, la tubulure 8 est pourvue d'une partie de diamètre réduit 9, sur laquelle peut être enfilé un raccord tubulaire In the region of its free end, the tubing 8 is provided with a portion of reduced diameter 9, on which can be threaded a tubular connection
normalisé au moyen duquel un tuyau souple, non repré- standard, by means of which a hose, not shown
senté et menant à une source de vide, peut être raccordé felt and leading to a vacuum source, can be connected
à la tubulure.to the tubing.
La tubulure 8 est entourée d'une bague 10 qui est également reliée d'un seul tenant à la bride à souder 1 et est dotée d'un filetage 11 sur lequel peut The tubing 8 is surrounded by a ring 10 which is also connected in one piece to the flange to be welded 1 and has a thread 11 on which can
être vissé un tube protecteur (non représenté) proté- screwed a protective tube (not shown)
geant le tuyau souple raccordé contre l'endommagement. the connected hose against damage.
Il est ainsi possible aussi, grâce au fait que le tuyau It is also possible, thanks to the fact that the pipe
souple de raccordement est protégé contre les endomma- flexible connection is protected against damage
gements par le tube protecteur mentionné, d'effectuer des travaux de bétonnage dans la région du double joint pendant le contrôle de celui-ci, au cours duquel on applique une dépression à l'espace 6 entre les feuilles 2 et 3 et, après la coupure de la source de vide, on by the mentioned protective tube, to carry out concreting work in the area of the double joint during the inspection of the latter, during which a vacuum is applied to the space 6 between the sheets 2 and 3 and, after the cut off the vacuum source, one
observe la montée de la pression.observe the rise in pressure.
T Le raccord est avantageusement fabriqué par moulage par injection, avec utilisation d'une matière plastique qui se laisse bien souder à la feuille 2 et dont la dureté Shore, à l'état fini du raccord, est comprise entre 75 et 90. The coupling is advantageously manufactured by injection molding, using a plastic material which is welded to the sheet 2 and whose Shore hardness, in the finished state of the coupling, is between 75 and 90.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0136690A AT399049B (en) | 1990-06-27 | 1990-06-27 | CONNECTING PIPE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2664020A1 true FR2664020A1 (en) | 1992-01-03 |
| FR2664020B1 FR2664020B1 (en) | 1994-04-15 |
Family
ID=3512327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9107957A Expired - Fee Related FR2664020B1 (en) | 1990-06-27 | 1991-06-27 | CONNECTING TUBE FOR CHECKING THE SEALING OF PLASTIC SHEETS. |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT399049B (en) |
| CH (1) | CH683873A5 (en) |
| DE (1) | DE4120785C2 (en) |
| FR (1) | FR2664020B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010033114A1 (en) * | 2010-08-02 | 2012-02-02 | Siemens Aktiengesellschaft | Pipe joint has sealing surface that is provided for engaging to be bonded metal sheets that are arranged between two points in region of adhesive joint surface |
| CN105004496A (en) * | 2015-08-19 | 2015-10-28 | 核工业理化工程研究院 | Device for detecting sealing of ultrasonically welded seam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB779240A (en) * | 1953-03-24 | 1957-07-17 | Leopold Rado | Collapsible container and method for the production thereof |
| GB853082A (en) * | 1957-12-13 | 1960-11-02 | Meyer Horst | Improvements in or relating to inflatable balls |
| DE3201515A1 (en) * | 1982-01-20 | 1983-07-28 | Manfred 5210 Troisdorf Hawerkamp | "METHOD AND DEVICE FOR TESTING WELDED SEALED COMPONENTS MADE OF THERMOPLASTIC PLASTIC, ESPECIALLY WELDED PLASTIC TUBES AND PLASTIC CONTAINERS" |
| EP0098322A1 (en) * | 1982-07-07 | 1984-01-18 | Bier-Drive Ag | Plastic bag |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE795542A (en) * | 1972-02-18 | 1973-06-18 | Dynamit Nobel Ag | METHOD AND DEVICE FOR CHECKING THE LEAKAGE OF THE WELDING CORDS OF PLASTIC STRIPS IN A VACUUM |
| AT372787B (en) * | 1982-03-17 | 1983-11-10 | Bauveg Bergbau Gmbh | METHOD FOR MEASURING THE TIGHTNESS OF MULTIPLE WELDING SEAMS |
| US4733555A (en) * | 1987-04-13 | 1988-03-29 | Franks Stephen H | Pressure entry and test system |
-
1990
- 1990-06-27 AT AT0136690A patent/AT399049B/en not_active IP Right Cessation
-
1991
- 1991-06-24 DE DE4120785A patent/DE4120785C2/en not_active Expired - Fee Related
- 1991-06-26 CH CH1896/91A patent/CH683873A5/en not_active IP Right Cessation
- 1991-06-27 FR FR9107957A patent/FR2664020B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB779240A (en) * | 1953-03-24 | 1957-07-17 | Leopold Rado | Collapsible container and method for the production thereof |
| GB853082A (en) * | 1957-12-13 | 1960-11-02 | Meyer Horst | Improvements in or relating to inflatable balls |
| DE3201515A1 (en) * | 1982-01-20 | 1983-07-28 | Manfred 5210 Troisdorf Hawerkamp | "METHOD AND DEVICE FOR TESTING WELDED SEALED COMPONENTS MADE OF THERMOPLASTIC PLASTIC, ESPECIALLY WELDED PLASTIC TUBES AND PLASTIC CONTAINERS" |
| EP0098322A1 (en) * | 1982-07-07 | 1984-01-18 | Bier-Drive Ag | Plastic bag |
Non-Patent Citations (1)
| Title |
|---|
| SCHWEIZERISCHE BAUZEITUNG vol. 91, no. 12, 22 Mars 1973, pages 296 - 298 A. PEDUZZI 'Tunnel- und Schacht-Abdichtungsverfahren mit PVC Folien' * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2664020B1 (en) | 1994-04-15 |
| DE4120785A1 (en) | 1992-01-02 |
| AT399049B (en) | 1995-03-27 |
| DE4120785C2 (en) | 2000-10-05 |
| ATA136690A (en) | 1994-07-15 |
| CH683873A5 (en) | 1994-05-31 |
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