FR2631278A1 - Deformable flexible mould - Google Patents
Deformable flexible mould Download PDFInfo
- Publication number
- FR2631278A1 FR2631278A1 FR8806514A FR8806514A FR2631278A1 FR 2631278 A1 FR2631278 A1 FR 2631278A1 FR 8806514 A FR8806514 A FR 8806514A FR 8806514 A FR8806514 A FR 8806514A FR 2631278 A1 FR2631278 A1 FR 2631278A1
- Authority
- FR
- France
- Prior art keywords
- formwork according
- formwork
- volume
- flexible
- filling material
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000009415 formwork Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229920000034 Plastomer Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/346—Manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
- B28B7/303—Cores; Mandrels adjustable, collapsible, or expanding specially for making undercut recesses or continuous cavities the inner section of which is superior to the section of either of the mouths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
- B28B7/32—Cores; Mandrels adjustable, collapsible, or expanding inflatable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3821—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process composed of particles enclosed in a bag
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
L'invention concerne un nouveau type de moule utilisable pour la réalisation de pièces ou ouvrages comportant des surfaces non facilement démoulables par des procédés classiques, et notamment des évidements intérieurs. The invention relates to a new type of mold which can be used for the production of parts or works comprising surfaces which are not easily demouldable by conventional methods, and in particular interior recesses.
Ce nouveau type de moule est utilisable comme coffrage pour la construction ou la préfabrication en béton, et aussi pour la fabrication des pièces réalisées en matériaux coulés à froid ou à relativement basse température, il peut donc concerner le Bâtiment, les Travaux Publics mais aussi toute l'industrie. Sa caractéristique principale est de pouvoir prendre une forme quelconque par moulage, de la conserver lors de la fabrication de la pièce finale, de redevenir souple lors du démoulage et d'être réutilisable ainsi un grand nombre de fois.This new type of mold can be used as formwork for construction or precast concrete, and also for the manufacture of parts made of cold-cast materials or at relatively low temperature, it can therefore concern the Building, Public Works but also any industry. Its main characteristic is to be able to take any form by molding, to keep it during the manufacture of the final part, to become flexible again when it is removed from the mold and thus to be reusable a large number of times.
Les techniques jusqutalors utilisées sont très variables - moules rigides en bois ou en métal démontables pour assurer le démoulage.The techniques used until now have been very variable - rigid wooden or metal molds which can be dismantled to ensure release.
- moules souples gonflables de section généralement circulaire ou arrondie mais toujours convexes démoulables par dégonflage.- flexible inflatable molds of generally circular or rounded section but always convex demouldable by deflation.
- moules perdus en bois, carton, polystyrène ou autre matière bon marché.- lost molds of wood, cardboard, polystyrene or other inexpensive material.
Ils sont utilisés pour réaliser des réservations intérieures (corps creux) ou des surfaces plus complexes. Leur mise en oeuvre est généralement' délicate et coûteuse, exige une main-d'oeuvre qualifiée et des temps d'intervention importants.They are used to make interior reservations (hollow bodies) or more complex surfaces. Their implementation is generally 'delicate and costly, requires skilled labor and significant intervention times.
Les moules perdus sont encombrants, coûteux en transport et approvisionnement si un grand nombre de pièces doit être réalisé.Lost molds are bulky, costly in transport and supply if a large number of parts have to be produced.
Ils ne se prêtent pas ou mal à des modifications de dernier instant ou en cours de fabrication.They do not or do not lend themselves to modifications at the last moment or during the manufacturing process.
Le nouveau type de moule apporte des solutions intéressantes à tous ces problèmes posés.The new type of mold provides interesting solutions to all of these problems.
Il est compo d'une peau extérieure coffrante souple (1) généralement confectionnée en forme de poche étanche.Cette poche contient un volume ajustable de matériau (2) pulvérulent ou granuleux, stable dans le temps et pour la plage de température d'utilisation. Cette poche est pourvue d'un orifice de gonflage/dégonflage (3) à l'air ou à tout autre fluide liquide ou gazeux. Elle peut être munie elle-même d'un corps. creux interne (4) pour faciliter le démoulage et d'un orifice de remplissage (5).It is made up of a flexible formwork outer skin (1) generally made in the form of a tight pocket. This pocket contains an adjustable volume of powdery or granular material (2), stable over time and for the temperature range of use. This pocket is provided with an inflation / deflation opening (3) for air or any other liquid or gaseous fluid. It can itself be provided with a body. internal hollow (4) to facilitate demolding and a filling orifice (5).
La peau extérieure souple (1) coffrante peut être réalisée à partir d'une membrane en élastomère (caoutchouc, ou dérivés) ou plastomère (PVC, polyuréthane, ou autres) renforcée éventuellement par des fibres textiles, synthétiques ou autre. Ce renfort peut se présenter sous forme de tissus, de câblés, ou .de fibres coupées, ou non tissées par exemple.The flexible outer skin (1) can be made from an elastomer (rubber, or derivatives) or plastomer (PVC, polyurethane, or other) membrane optionally reinforced with textile, synthetic or other fibers. This reinforcement can be in the form of fabrics, cords, or cut fibers, or nonwoven for example.
Le matériau devra avoir des caractéristiques d'étanchéité, être le moins sensible possible aux produits de moulage (béton, résine ou autres), avoir des caractéristiques mécaniques compatibles avec le nombre de réemploi envisagés (résistance à l'abrasion, au poinçonnement, à la déchirure entre autres).The material must have sealing characteristics, be as less sensitive as possible to molding products (concrete, resin or other), have mechanical characteristics compatible with the number of reuse envisaged (resistance to abrasion, to puncturing, to tear among others).
La confection de cette peau peut être réalisée par moulage, collage, soudure (température, ou haute fréquence), survulcanisation ou toute autre technique appropriée.The making of this skin can be carried out by molding, gluing, welding (temperature, or high frequency), over-vulcanization or any other suitable technique.
Le matériau de remplissage (2) devra rester stable, avoir une bonne cohésion et garder son intégrité lors d'opérations de compression. Il peut se présenter sous forme de pulvérulents, de granulats, ou de petits volumes unitaires (billes par exemple).The filling material (2) must remain stable, have good cohesion and keep its integrity during compression operations. It can be in the form of powders, aggregates, or small unit volumes (beads for example).
Avantageusement, ce matériau sera léger, présenterà des caractéristiques d'écoulement aisé. Des matériaux aussi divers que le sable, les billes de verre, de polystirène, d'argile expansée, peuvent convenir tout autant que des balles de ping pong pour des dimensions plus importantes. La granulométrie, ou la dimension des constituants peut être adaptée au problème afin de diminuer ou augmenter les vides interstitiels du corps de remplissage.Advantageously, this material will be light, presenting easy flow characteristics. Materials as diverse as sand, glass beads, polystyrene, expanded clay, can be just as suitable as ping pong balls for larger dimensions. The particle size, or the size of the constituents can be adapted to the problem in order to reduce or increase the interstitial voids of the filling body.
Un corps creux (4) interne au corps de remplissage peut être avantageusement installé afin, lors du retrait de celui-ci de ménager un vide facilitant - l'écoulement du matériau de remplissage. Ce corps creux peut être extérieur à la poche (1) et être extrait comme une clé de décoffrage classique (figure 3/14), auquel cas la poche est double et présente une partie creuse interne. Le corps creux peut aussi être interne et extrait par une ouverture étanche ménagée dans la poche (croquis 3), ou bien encore ce corps creux peut être lui-même une structure gonflable interne, alors il n'est plus extrait mais simplement dégonflé (figure 4/14).A hollow body (4) internal to the filling body can advantageously be installed in order, during the withdrawal of the latter, to create a vacuum facilitating - the flow of the filling material. This hollow body can be outside the pocket (1) and can be extracted like a conventional formwork key (Figure 3/14), in which case the pocket is double and has an internal hollow part. The hollow body can also be internal and extracted by a sealed opening in the pocket (sketch 3), or even this hollow body can itself be an internal inflatable structure, so it is no longer extracted but simply deflated (figure 4/14).
Le processus d'utilisation consiste à introduire le coffrage souple moulable dans un moule extérieur, ou conformateur (6). Cette pièce ne demande aucune résistance mécanique particulière (figure 5/14). Elle pourra stouvrir, ou se démonter pour assurer l'extraction du coffrage une fois celui-ci moulé. Il peut être réalisé très simplement en bois par exemple. Le volume intérieur de celui-ci peut-être de forme quelconque, même concave, présenter des arêtes vives. Une fois le coffrage en place, il peut convenir de gonfler légèrement et de vibrer l'ensemble afin que le matériau. de remplissage occupe tout le volume disponible.Le corps creux interne (4) peut être introduit ou légèrement gonflé à ce moment là.(figures 6/14 et 7/14).La phase suivante - consiste à- venir dégonfler et aspirer la poche en surgonflant éventuellement le corps creux interne (figure 8~14). The process of use consists in introducing the flexible moldable formwork in an external mold, or conformator (6). This part does not require any particular mechanical resistance (Figure 5/14). It can open, or be dismantled to ensure the extraction of the formwork once it is molded. It can be made very simply out of wood for example. The interior volume thereof may be of any shape, even concave, have sharp edges. Once the formwork in place, it may be appropriate to slightly inflate and vibrate the assembly so that the material. filling occupies all the available volume. The internal hollow body (4) can be introduced or slightly inflated at this time. (Figures 6/14 and 7/14). The next phase - consists of deflating and vacuuming the bag possibly overinflating the internal hollow body (Figure 8 ~ 14).
Ce dégonflage peut être assuré par une pompe, pour tout fluide, ou par un tube de venturi si le gonflage se fait à l'air ou à l'aide de tout autre gaz.This deflation can be ensured by a pump, for any fluid, or by a venturi tube if the inflation is done in air or using any other gas.
La différence de pression ainsi créée entre la pression extérieure, généralement atmosphérique, et le résidu de pression interne engendre une compression permanente de l'ensemble qui suffit alors à assurer par cohésion une forme propre au coffrage; forme propre qui sera conservée lors du démoulage et de la phase suivante qui sera celle du moulage de la pièce à réaliser (figures 9/14 et 10/14), dans un coffrage exterieur (6).The pressure difference thus created between the external pressure, generally atmospheric, and the internal pressure residue generates a permanent compression of the assembly which then suffices to ensure by cohesion a shape proper to the formwork; clean form which will be kept during demolding and the next phase which will be that of molding the part to be produced (Figures 9/14 and 10/14), in an external formwork (6).
Le matériau de coulage ayant fait sa prise, il convient de dégonfler ou extraire l'éventuel corps creux interne (figure 11/14), de réequilibrer la pression interne et la pression externe (équipression atmosphérique par exemple); Si la pièce peut être inclinée ou retournée, l'extraction de la poche se fera d'autant plus facilement.Once the casting material has set, it is necessary to deflate or extract any internal hollow body (Figure 11/14), to rebalance the internal pressure and the external pressure (atmospheric pressure for example); If the part can be tilted or turned, the extraction of the pocket will be all the easier.
Pour les cas ou l'orifice d'extraction serait de dimension très nettement inférieure à celle de la section maximale du corps creux, il est possible d'extraire le matériau de remplissage par aspiration ou écoulement éventuellement en fluidisation (injection d'air par exemple à l'intérieur de la poche). La poche peut alors avantageusement être reliée de façon flexible à un réservoir souple extérieur (figure 13/14). Ce réservoir souple peut avantageusement n'être qu'une partie excédentaire de la poche qui opère un collapsus lors du moulage, et n'occupe alors qu'un minimum de place - (figure 14/14). In cases where the extraction orifice is very clearly smaller than that of the maximum section of the hollow body, it is possible to extract the filling material by suction or flow, possibly in fluidization (air injection for example inside the pocket). The bag can then advantageously be flexibly connected to an external flexible tank (Figure 13/14). This flexible tank can advantageously be only an excess part of the pocket which operates a collapse during molding, and then occupies only a minimum of space - (Figure 14/14).
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8806514A FR2631278A1 (en) | 1988-05-16 | 1988-05-16 | Deformable flexible mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8806514A FR2631278A1 (en) | 1988-05-16 | 1988-05-16 | Deformable flexible mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2631278A1 true FR2631278A1 (en) | 1989-11-17 |
Family
ID=9366315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8806514A Pending FR2631278A1 (en) | 1988-05-16 | 1988-05-16 | Deformable flexible mould |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2631278A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0507709A1 (en) * | 1991-04-05 | 1992-10-07 | Centre Technique Cuir Chaussure Maroquinerie | Method and device to determine the size of a shoe and apparatus to determine the size of the front of the shoe |
| NL1005399C2 (en) * | 1997-02-28 | 1998-08-31 | Kupron Prototypes B V | Application of pressure to plastic product in mould during manufacture |
| EP0890422A1 (en) * | 1997-07-10 | 1999-01-13 | Anton Wilhelm | Process for casting articles , in particular decorating articles from plaster or concrete and device for carrying out the process |
| WO2007032683A1 (en) * | 2005-09-07 | 2007-03-22 | Hallvar Eide | Container and method and device for manufacturing of such containers |
| EP3159129A1 (en) * | 2015-10-22 | 2017-04-26 | Evonik Röhm GmbH | Preparation of complex foam or sandwich hollow structures by means of a mould core |
| CN111657630A (en) * | 2020-07-08 | 2020-09-15 | 中国皮革制鞋研究院有限公司 | Method and device for quickly taking out mold of shoe inner cavity |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2517902A (en) * | 1944-08-31 | 1950-08-08 | George C Luebkeman | Molding process and means |
| US3101519A (en) * | 1961-11-29 | 1963-08-27 | Flexicore Co | Duct forming core |
| FR1456231A (en) * | 1964-11-27 | 1966-10-21 | Shell Int Research | Production process for hollow objects |
| DE1944894A1 (en) * | 1969-09-04 | 1971-03-11 | Josef Kirchberger | Device for making recesses when pouring concrete blocks and methods for their use |
| FR2299132A1 (en) * | 1975-02-03 | 1976-08-27 | Norcem As | PROCESS AND DEVICE FOR THE MANUFACTURING OF CONCRETE ELEMENTS WITH INTERNAL THROUGH CAVITES |
| DE8711336U1 (en) * | 1987-08-20 | 1987-10-22 | Ems-Inventa AG, Zürich | Mould core for the production of hollow bodies |
-
1988
- 1988-05-16 FR FR8806514A patent/FR2631278A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2517902A (en) * | 1944-08-31 | 1950-08-08 | George C Luebkeman | Molding process and means |
| US3101519A (en) * | 1961-11-29 | 1963-08-27 | Flexicore Co | Duct forming core |
| FR1456231A (en) * | 1964-11-27 | 1966-10-21 | Shell Int Research | Production process for hollow objects |
| DE1944894A1 (en) * | 1969-09-04 | 1971-03-11 | Josef Kirchberger | Device for making recesses when pouring concrete blocks and methods for their use |
| FR2299132A1 (en) * | 1975-02-03 | 1976-08-27 | Norcem As | PROCESS AND DEVICE FOR THE MANUFACTURING OF CONCRETE ELEMENTS WITH INTERNAL THROUGH CAVITES |
| DE8711336U1 (en) * | 1987-08-20 | 1987-10-22 | Ems-Inventa AG, Zürich | Mould core for the production of hollow bodies |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0507709A1 (en) * | 1991-04-05 | 1992-10-07 | Centre Technique Cuir Chaussure Maroquinerie | Method and device to determine the size of a shoe and apparatus to determine the size of the front of the shoe |
| FR2674731A1 (en) * | 1991-04-05 | 1992-10-09 | Centre Tech Cuir Chaussure | METHOD AND DEVICE FOR MEASURING THE INTERNAL VOLUME OF A FOOTWEAR ARTICLE. |
| NL1005399C2 (en) * | 1997-02-28 | 1998-08-31 | Kupron Prototypes B V | Application of pressure to plastic product in mould during manufacture |
| EP0890422A1 (en) * | 1997-07-10 | 1999-01-13 | Anton Wilhelm | Process for casting articles , in particular decorating articles from plaster or concrete and device for carrying out the process |
| WO2007032683A1 (en) * | 2005-09-07 | 2007-03-22 | Hallvar Eide | Container and method and device for manufacturing of such containers |
| JP2009506959A (en) * | 2005-09-07 | 2009-02-19 | エイド，ハルヴァー | Container and method and apparatus for manufacturing such a container |
| EP3159129A1 (en) * | 2015-10-22 | 2017-04-26 | Evonik Röhm GmbH | Preparation of complex foam or sandwich hollow structures by means of a mould core |
| WO2017067867A3 (en) * | 2015-10-22 | 2017-06-15 | Evonik Röhm Gmbh | Production of complex hollow foam or sandwich structures by means of a mold core |
| CN108136624A (en) * | 2015-10-22 | 2018-06-08 | 赢创罗姆有限公司 | Complicated hollow foam or sandwich structure are prepared by core |
| US10919198B2 (en) | 2015-10-22 | 2021-02-16 | Evonik Operations Gmbh | Production of complex hollow foam or sandwich structures by means of a mold core |
| CN111657630A (en) * | 2020-07-08 | 2020-09-15 | 中国皮革制鞋研究院有限公司 | Method and device for quickly taking out mold of shoe inner cavity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0862978B1 (en) | Method of manufacturing hollow articles from a composite material | |
| US4704240A (en) | Method of fabricating tubular composite structures | |
| US3646704A (en) | Manipulable amusement device | |
| FR2877638A1 (en) | THERMALLY INSULATED AND THERMALLY INSULATED TANK WITH COMPRESSION-RESISTANT CALORIFYING ELEMENTS | |
| FR2631278A1 (en) | Deformable flexible mould | |
| US2573366A (en) | Means of sealing pipe joints | |
| US20050009440A1 (en) | Air/water powered rocket toy with inflatable fuselage | |
| US3751551A (en) | Process of centrifugal casting | |
| CN104344152B (en) | Pipeline non-excavation rehabilitation device and trenchless repairing method | |
| JPH02502362A (en) | Pressure method using elastomeric spheres for adhesive bonding of aggregate materials | |
| US3939509A (en) | Light-weight buoy | |
| CA1058650A (en) | Inflatable rim joint | |
| US10464743B2 (en) | Tank made of a composite material | |
| JPH0233496B2 (en) | FRPSEICHUKUYOKINOSEIKEIHOHO | |
| US3059656A (en) | Inflatable plastic structure | |
| EP0493197B1 (en) | Process for molding a liquefiable material, especially soaps, and transparent or translucent soaps | |
| GB2119305A (en) | Moulding hollow articles | |
| EP0192507A1 (en) | Method of manufacturing a hollow article with a complex shape from a composite material | |
| JP2003165158A (en) | Pipe lining work method | |
| US3174501A (en) | Valve and valve mounting | |
| JPS60232918A (en) | Manufacturing method for reinforced plastic pipe fittings | |
| JPS6344386Y2 (en) | ||
| BE549247A (en) | ||
| CN204226952U (en) | Pipeline non-excavation rehabilitation device | |
| CN104309048A (en) | Method for preparing heat-insulation pipe by films |